# This file is deprecated as per GLEP 56 in favor of metadata.xml. Please add
# your descriptions to your package's metadata.xml ONLY.
# * generated automatically using egencache *

acct-user/git:gitea - Set home directory for git hosting via www-apps/gitea.
acct-user/git:gitolite - Set home directory for git hosting via dev-vcs/gitolite or dev-vcs/gitolite-gentoo.
acct-user/vdr:graphlcd - Prepare group membership for media-plugins/vdr-graphlcd.
acct-user/vdr:legacy-homedir - Keep old home directory /var/vdr of an existing installation. When this useflag is cleared, the home directory is switched to FHS conformant /var/lib/vdr
acct-user/vdr:remote - Prepare group membership for media-plugins/vdr-remote.
acct-user/vdr:serial - Prepare group membership for media-plugins/vdr-serial.
app-accessibility/at-spi2-core:dbus-broker - Use DBus broker implementation instead of default DBus daemon
app-accessibility/brltty:api - build brltty's application program interface
app-accessibility/brltty:beeper - support the console tone generator
app-accessibility/brltty:fm - support for the sound card synthesizer
app-accessibility/brltty:louis - Use braille translator dev-libs/liblouis
app-accessibility/brltty:midi - support the musical instrument digital interface
app-accessibility/brltty:pcm - support for sound card digital audio
app-accessibility/emacspeak:espeak - Adds support for the espeak tts engine
app-accessibility/espeak-ng:async - Enables asynchronous commands
app-accessibility/espeak-ng:klatt - Enables Klatt formant synthesis and implementation
app-accessibility/espeak-ng:l10n_ru - Builds extended Russian Dictionary file
app-accessibility/espeak-ng:l10n_zh - Builds extended Chinese (Mandarin and Cantonese) Dictionary files
app-accessibility/espeak-ng:man - Builds and installs manpage with app-text/ronn-ng
app-accessibility/espeak-ng:mbrola - Adds support for mbrola voices
app-accessibility/flite:voices - Install synthetic voices
app-accessibility/freetts:jsapi - build Java Speech API (JSAPI)
app-accessibility/freetts:mbrola - Adds support for mbrola voices
app-accessibility/orca:braille - Enable braille support
app-accessibility/speech-dispatcher:espeak - Adds support for espeak-ng speech engine
app-accessibility/speech-dispatcher:flite - Adds support for flite speech engine
app-admin/clsync:apidoc - Provide doxygen generated API docs.
app-admin/clsync:cgroups - Use cgroups to limit /dev access.
app-admin/clsync:clsync - Build clsync binary. Most likely you want it. However it is possible to build only libclsync without clsync itself.
app-admin/clsync:cluster - Enable clustering support (allows master-master clsync on multiple hosts). Not fully implemented yet.
app-admin/clsync:control-socket - Enable AF_UNIX control socket support.
app-admin/clsync:extra-debug - Enable extra debugging. This will hurt performance badly. Be ready for tons of output.
app-admin/clsync:extra-hardened - Enable extra security checks. This will hurt performance.
app-admin/clsync:gio - Enable GIO for FS monitoring (glib based alternative to inotify interface, not recommended; if both are compiled, may be selected at runtime).
app-admin/clsync:highload-locks - Allows to use spinlocks for short delays instead of mutexes, but only on SMP systems.
app-admin/clsync:namespaces - Enable namespaces isolation.
app-admin/clsync:socket-library - Build the control and monitoring socket library: libclsync.
app-admin/conky:apcupsd - Enable support for sys-power/apcupsd
app-admin/conky:bundled-toluapp - Enable support for bundled toluapp. This only makes sense in combination with the lua-* flags
app-admin/conky:cmus - Enable monitoring of music played by media-sound/cmus
app-admin/conky:colour-name-map - Include mappings of colour name
app-admin/conky:extras - Enable syntax highlighting for app-editors/nanoand app-editors/vim
app-admin/conky:ical - Enable support for events from iCalendar (RFC 5545) files using dev-libs/libical
app-admin/conky:intel-backlight - Enable support for Intel backlight
app-admin/conky:iostats - Enable support for per-task I/O statistics
app-admin/conky:irc - Enable support for displaying everything from an irc channel using net-libs/libircclient
app-admin/conky:lua-cairo - Enable if you want Lua Cairo bindings
app-admin/conky:lua-cairo-xlib - Enable support for Cairo and Xlib interoperability for Lua
app-admin/conky:lua-imlib - Enable if you want Lua Imlib2 bindings
app-admin/conky:lua-rsvg - Enable if you want Lua RSVG bindings
app-admin/conky:math - Enable support for glibc's libm math library
app-admin/conky:moc - Enable monitoring of music played by media-sound/moc
app-admin/conky:mouse-events - Enable support for mouse events"
app-admin/conky:mpd - Enable monitoring of music controlled by media-sound/mpd
app-admin/conky:nvidia - Enable reading of nvidia card temperature sensors via x11-drivers/nvidia-drivers
app-admin/conky:portmon - Enable support for tcp (ip4) port monitoring
app-admin/conky:thinkpad - Enable support for IBM/Lenovo notebooks
app-admin/conky:webserver - Enable support to act as a webserver serving conkys output using net-libs/libmicrohttpd
app-admin/conky:xinput - Enable support for Xinput 2 (slow)
app-admin/conky:xmms2 - Enable monitoring of music played by media-sound/xmms2
app-admin/conserver:freeipmi - Compile in FreeIPMI support via sys-libs/freeipmi
app-admin/diradm:automount - Support for automount data in LDAP
app-admin/diradm:irixpasswd - Support for storing separate IRIX passwords
app-admin/doas:persist - Adds support for "persist" feature (experimental)
app-admin/gkrellm:X - Build both the X11 gui (gkrellm) and the server (gkrellmd). Disabling this flag builds the server only
app-admin/gkrellm:gnutls - Enable SSL support for mail checking with net-libs/gnutls (overrides 'ssl' USE flag)
app-admin/gkrellm:lm-sensors - Enable monitoring sensors via sys-apps/lm-sensors
app-admin/gkrellm:ntlm - Enable NTLM authentication for mail checking with net-libs/libntlm
app-admin/gkrellm:ssl - Enable SSL support for mail checking with dev-libs/openssl
app-admin/gtkdiskfree:gtk2 - Support GTK+ 2.x instead of GTK+ 3.x
app-admin/hddtemp:network-cron - Monthly cronjob to update hddtemp.db.
app-admin/keepass:aot - Generate native code at build time, rather than runtime.
app-admin/keepassxc:autotype - Add support to autotype the passwords into other applications
app-admin/keepassxc:browser - Enables browser plugin support
app-admin/keepassxc:keeshare - Enable KeeShare sharing integration
app-admin/keepassxc:network - Enable network support
app-admin/keepassxc:yubikey - Enable database unlocking via hardware keys supporting YubiKey-style HMAC-SHA1 protocol
app-admin/lnav:pcap - Enable support for pcap files.
app-admin/logcheck:cron - Adds file to enable hourly cron job to run logcheck"
app-admin/logrotate:acl - Installs acl support
app-admin/logrotate:cron - Installs cron file
app-admin/logrotate:selinux - Installs Security Enhanced Linux support
app-admin/logstash-bin:x-pack - Enable additional features (may need a license)
app-admin/openrc-settingsd:systemd - Use the versions of dbus and polkit files provided by sys-apps/systemd
app-admin/pass:X - Use x11-misc/xclip to copy passwords to the clipboard.
app-admin/pass:dmenu - Add support for x11-misc/dmenu with the 'passmenu' program.
app-admin/pass:git - Use dev-vcs/git for password revisions.
app-admin/pass:importers - Allow importing passwords from other password managers using various contributed scripts.
app-admin/pass-otp:qrcode - Add support for qrcodes using media-gfx/qrencode
app-admin/passwordsafe:qr - Enable QR code password display
app-admin/passwordsafe:xml - Enable XML import support
app-admin/passwordsafe:yubikey - Enable support for Yubikey
app-admin/perl-cleaner:pkgcore - Use sys-apps/pkgcore instead of sys-apps/portage and app-portage/portage-utils.
app-admin/puppet:augeas - Enable augeas support
app-admin/puppet:diff - Enable diff support
app-admin/puppet:hiera - Enable hiera support
app-admin/puppet:rrdtool - Enable rrdtool support
app-admin/puppet:shadow - Enable shadow support
app-admin/puppet-agent:puppetdb - Adds puppetdb support
app-admin/puppetserver:puppetdb - Adds support for connecting to puppetdb
app-admin/pwgen:livecd - Install init script for root password scrambling on boot
app-admin/rsyslog:clickhouse - Build the ClickHouse output module (requires net-misc/curl)
app-admin/rsyslog:curl - Enable http_request() function in RainerScript (requires net-misc/curl)
app-admin/rsyslog:dbi - Build the general database output module (requires dev-db/libdbi)
app-admin/rsyslog:elasticsearch - Build the Elasticsearch output module (requires net-misc/curl)
app-admin/rsyslog:gcrypt - Add support for encrypted log files using dev-libs/libgcrypt
app-admin/rsyslog:gnutls - Build the GnuTLS network stream driver (requires net-libs/gnutls)
app-admin/rsyslog:imhttp - Build the http input module (requires www-servers/civetweb)
app-admin/rsyslog:impcap - Build the pcap input module (requires net-libs/libpcap)
app-admin/rsyslog:kafka - Build the Apache Kafka input/output module (requires dev-libs/librdkafka)
app-admin/rsyslog:kerberos - Build the GSSAPI input and output module (requires virtual/krb5)
app-admin/rsyslog:kubernetes - Build the kubernetes modify plugin (requires net-misc/curl)
app-admin/rsyslog:mdblookup - Build the MaxMind DB lookup message modify plugin using dev-libs/libmaxminddb
app-admin/rsyslog:mongodb - Build the MongoDB output module (requires dev-libs/mongo-c-driver)
app-admin/rsyslog:mysql - Build the MySQL database output module (requires virtual/mysql)
app-admin/rsyslog:normalize - Build the normalize modify module (requires dev-libs/libee and dev-libs/liblognorm)
app-admin/rsyslog:omhttp - Build the http output module (requires net-misc/curl)
app-admin/rsyslog:omhttpfs - Build the httpfs output module (requires net-misc/curl)
app-admin/rsyslog:omudpspoof - Build the udpspoof output module (requires net-libs/libnet)
app-admin/rsyslog:openssl - Build the OpenSSL network stream driver (requires dev-libs/openssl)
app-admin/rsyslog:postgres - Build the PostgreSQL database output module (requires dev-db/postgresql)
app-admin/rsyslog:rabbitmq - Build the RabbitMQ output module (requires net-libs/rabbitmq-c)
app-admin/rsyslog:redis - Build the Redis output module using (requires dev-libs/hiredis)
app-admin/rsyslog:relp - Build the Reliable Event Logging Protocol (RELP) output module (requires dev-libs/librelp)
app-admin/rsyslog:rfc3195 - Build the rfc3195 input module (requires dev-libs/liblogging)
app-admin/rsyslog:rfc5424hmac - Build the rfc5424hmac modify module (requires dev-libs/openssl)
app-admin/rsyslog:snmp - Build the snmp modify and output module (requires net-analyzer/net-snmp)
app-admin/rsyslog:ssl - Add support for encrypted client/server communication (requires net-libs/gnutls)
app-admin/rsyslog:systemd - Build the journal input and output module (requires sys-apps/systemd)
app-admin/rsyslog:usertools - Installs the user tools (rsgtutil, rscryutil...) corresponding to the set USE flags
app-admin/rsyslog:uuid - Include UUIDs in messages (requires sys-apps/util-linux)
app-admin/rsyslog:xxhash - Enable xxHash support in fmhash module (requires dev-libs/xxhash)
app-admin/rsyslog:zeromq - Build the ZeroMQ input and output modules (requires net-libs/czmq)
app-admin/sagan:libdnet - Add support for dev-libs/libdnet
app-admin/sagan:pcap - Add support for network packet capture via net-libs/libpcap
app-admin/sagan:redis - Add support for the Redis database via dev-libs/hiredis
app-admin/sagan:smtp - Build witch SMTP (E-Mail) support
app-admin/salt:cheetah - Enable support for dev-python/cheetah3
app-admin/salt:cherrypy - Enable support for using cherrypy.
app-admin/salt:genshi - Enable support for dev-python/genshi
app-admin/salt:gnupg - Enable support for gnupg via python-gnupg.
app-admin/salt:libcloud - Enable salt-cloud support via libcloud.
app-admin/salt:libvirt - Support managing virtual machines with app-emulation/libvirt.
app-admin/salt:mako - Add support for using the mako template engine for parsing salt states.
app-admin/salt:mongodb - Support returning data to a mongodb server.
app-admin/salt:neutron - Support the OpenStack neutron network service.
app-admin/salt:nova - Enable support for the OpenStack Nova API
app-admin/salt:openssl - Add support for using TLS via OpenSSL.
app-admin/salt:portage - Add support for package state enforcement using sys-apps/portage
app-admin/salt:raet - Add support for the new RAET transport.
app-admin/salt:redis - Support returning data to a redis database.
app-admin/salt:zeromq - Add support for the zeromq transport.
app-admin/sudo:gcrypt - Use message digest functions from dev-libs/libgcrypt instead of sudo's
app-admin/sudo:offensive - Let sudo print insults when the user types the wrong password
app-admin/sudo:secure-path - Replace PATH variable with compile time secure paths
app-admin/sudo:sendmail - Allow sudo to send emails with sendmail
app-admin/sudo:sssd - Add System Security Services Daemon support
app-admin/sysklogd:logger - Build the logger program
app-admin/sysklogd:logrotate - use app-admin/logrotate for rotating logs rather than custom cron scripts
app-admin/syslog-ng:amqp - Enable support for AMQP destinations
app-admin/syslog-ng:geoip2 - Add support for geo lookup based on IPs via dev-libs/libmaxminddb
app-admin/syslog-ng:grpc - Enable GRPC based driver support (OpenTelemetry) via net-libs/grpc
app-admin/syslog-ng:http - Enable support for HTTP destinations
app-admin/syslog-ng:json - Enable support for JSON template formatting via dev-libs/json-c
app-admin/syslog-ng:kafka - Enable support for Kafka destinations
app-admin/syslog-ng:mongodb - Enable support for mongodb destinations
app-admin/syslog-ng:mqtt - Enable MQTT support via net-libs/paho-mqtt-c
app-admin/syslog-ng:pacct - Enable support for reading Process Accounting files (EXPERIMENTAL, Linux only)
app-admin/syslog-ng:redis - Enable support for Redis destinations
app-admin/syslog-ng:smtp - Enable support for SMTP destinations
app-admin/syslog-ng:spoof-source - Enable support for spoofed source addresses
app-admin/sysstat:dcron - Adjust cronjobs to work properly under sys-process/dcron
app-admin/testdisk:ewf - Include ewf library
app-admin/testdisk:ntfs - Include the ability to read NTFS filesystems
app-admin/testdisk:reiserfs - Include reiserfs reading ability
app-admin/testdisk:sudo - Enable sudo helper integration
app-admin/tripwire:ssl - Adds support for Secure Socket Layer connections
app-admin/tripwire:static - Builds the package statically
app-admin/tripwire:tools - Installs app-admin/mktwpol, providing scripts for the installation/setup of tripwire, including generating the tripwire policy file and maintenance of the tripwire database
app-admin/ulogd:json - Build JSON output plugin to save packets in JSON file format
app-admin/ulogd:nfacct - Build NFACCT input plugin to support traffic accounting via nfnetlink_acct
app-admin/ulogd:nfct - Build NFCT input plugin to support stateful flow-based logging via nfnetlink_conntrack
app-admin/ulogd:nflog - Build NFLOG input plugin to support stateless packet-based logging via nfnetlink_log
app-admin/ulogd:pcap - Build PCAP output plugin to save packets in libpcap file format
app-admin/ulogd:ulog - Build ULOG input plugin to support deprecated packet-based logging via ULOG target
app-admin/vault:webui - Enable the Web UI
app-admin/webalizer:xtended - Include the 404 extension
app-admin/webapp-config:portage - Propagate python_targets dependencies to sys-apps/portage
app-alternatives/awk:busybox - Symlink to sys-apps/busybox
app-alternatives/awk:gawk - Symlink to sys-apps/gawk
app-alternatives/awk:mawk - Symlink to sys-apps/mawk (warning: mawk is not fully POSIX-compliant)
app-alternatives/awk:nawk - Symlink to sys-apps/nawk
app-alternatives/bc:gh - Symlink to bc-gh from sci-calculators/bc-gh
app-alternatives/bc:gnu - Symlink to GNU bc (sys-devel/bc)
app-alternatives/bzip2:lbzip2 - Symlink to app-arch/lbzip2.
app-alternatives/bzip2:pbzip2 - Symlink to app-arch/pbzip2.
app-alternatives/bzip2:reference - Symlink to app-arch/bzip2.
app-alternatives/cpio:gnu - Symlink to GNU cpio (app-arch/cpio)
app-alternatives/cpio:libarchive - Symlink to bsdcpio from app-arch/libarchive
app-alternatives/gzip:pigz - Symlink to app-arch/pigz.
app-alternatives/gzip:reference - Symlink to app-arch/gzip.
app-alternatives/lex:flex - Symlink to sys-devel/flex.
app-alternatives/lex:reflex - Symlink to sys-devel/reflex.
app-alternatives/ninja:reference - Symlink to dev-build/ninja.
app-alternatives/ninja:samurai - Symlink to dev-build/samurai.
app-alternatives/sh:bash - Symlink to app-shells/bash
app-alternatives/sh:busybox - Symlink to sys-apps/busybox
app-alternatives/sh:dash - Symlink to app-shells/dash
app-alternatives/sh:ksh - Symlink to app-shells/ksh
app-alternatives/sh:lksh - Symlink to lksh from app-shells/mksh
app-alternatives/sh:mksh - Symlink to mksh from app-shells/mksh
app-alternatives/tar:gnu - Symlink to GNU tar (app-arch/tar)
app-alternatives/tar:libarchive - Symlink to bsdtar from app-arch/libarchive
app-alternatives/yacc:bison - Symlink to app-alternatives/yacc.
app-alternatives/yacc:byacc - Symlink to dev-util/byacc.
app-alternatives/yacc:reference - Symlink to dev-util/yacc.
app-antivirus/clamav:clamapp - Build applications (clamscan, clamd, clamdscan, clamonacc (also has its own USE flag), sigtool, clambc, clamav-milter (also requires milter USE flag), clamdtop, clamsubmit, clamconf).
app-antivirus/clamav:clamdtop - A Top like tool which shows what clamd is currently scanning amongst other things
app-antivirus/clamav:clamonacc - Build the clamonacc on-access scanner
app-antivirus/clamav:clamsubmit - A tool to submit false positives / negatives
app-antivirus/clamav:experimental - Enable experimental features
app-antivirus/clamav:libclamav-only - Bypass building of libfreshclam and the ClamAV CLI applications.
app-antivirus/clamav:metadata-analysis-api - Enables collection of file property metadata using ClamAV API for analysis by ClamAV bytecode programs.
app-antivirus/clamav:rar - RAR support
app-antivirus/clamav:system-mspack - Use dev-libs/libmspack instead of the version bundled with ClamAV
app-antivirus/clamav:xml - DMG and XAR support
app-antivirus/clamtk:kde - Install the Dolphin plugin.
app-antivirus/clamtk:nautilus - Install the Nautilus plugin.
app-antivirus/clamtk:nemo - Install the Nemo plugin.
app-antivirus/clamtk:thunar - Install the Thunar plugin.
app-arch/7zip:jwasm - Use dev-lang/jwasm to include optimized code (doesn't support AES)
app-arch/7zip:rar - Enable support for non-free rar decoder
app-arch/7zip:uasm - Use dev-lang/uasm to include optimized code
app-arch/cabextract:extras - Install experimental extra tools: wince_info and wince_rename for examining and processing Windows CE installation cabinet header files; cabinfo for examining the structure of a cab file.
app-arch/createrepo_c:legacy - Build with support for legacy weakdeps and hashes (not recommended!)
app-arch/dpkg:libmd - Use app-crypt/libmd library for message digest functions
app-arch/dpkg:update-alternatives - Install update-alternatives
app-arch/dump:ermt - encrypted rmt support
app-arch/dump:uuid - Enable UUID support
app-arch/engrampa:caja - Enable engrampa to integrate with mate-base/caja by providing entries in its context menu
app-arch/file-roller:nautilus - Build contextual menu extension for gnome-base/nautilus.
app-arch/gzip:pic - disable optimized assembly code that is not PIC friendly
app-arch/innoextract:debug - Enable debug logging and the --debug command-line option
app-arch/innoextract:lzma - Enable support for extracting lzma-compressed installers using app-arch/xz-utils
app-arch/libarchive:blake2 - Enable Blake2 hash support via app-crypt/libb2.
app-arch/libarchive:bzip2 - Allow accessing bzip2-compressed archives through libbz2 (which comes with app-arch/bzip2). This only affects libarchive's native support: bsdtar will keep using bunzip2 as a filter if that's not built-in.
app-arch/libarchive:e2fsprogs - Use file flags from sys-fs/e2fsprogs headers instead of virtual/os-headers headers
app-arch/libarchive:nettle - Use dev-libs/nettle as crypto backend
app-arch/libdeflate:test - Build the test programs (requires sys-libs/zlib)
app-arch/libdeflate:utils - Build the libdeflate-gzip program
app-arch/lrzip-next:largefile - Enables support for large files
app-arch/lrzip-next:year2038 - Enables support for 64-bit 'time_t' (sets D_TIME_BITS=64; glibc only)
app-arch/p7zip:natspec - Use dev-libs/libnatspec to correctly decode non-ascii file names archived in Windows.
app-arch/p7zip:rar - Enable support for non-free rar decoder
app-arch/rar:all-sfx - Install all SFX (Self-Extracting) files rather than just the native format (allows creation of Windows EXEs on Linux ELF systems)
app-arch/rpm:sequoia - Use app-crypt/rpm-sequoia instead of the deprecated internal parser
app-arch/tar:minimal - just install `tar`
app-arch/unzip:natspec - Use dev-libs/libnatspec to correctly decode non-ascii file names archived in Windows.
app-arch/wimlib:fuse - Use fuse libraries
app-arch/wimlib:iso - Install app-cdr/cdrtools in order to prepare iso images
app-arch/wimlib:ntfs - Use libntfs-3g library from sys-fs/ntfs3g
app-arch/wimlib:yasm - Use yasm assembler instead of nasm
app-arch/xz-utils:extra-filters - Build additional filters that are not used in any of the default xz presets. This includes delta and BCJ coders, additional match finders and SHA256 checks.
app-arch/xz-utils:pgo - Optimize the build using Profile Guided Optimization (PGO)
app-arch/zip:natspec - Use dev-libs/libnatspec to correctly decode non-ascii file names archived in Windows.
app-backup/amanda:ndmp - Support for the NDMP protocol
app-backup/amanda:s3 - Support for backing up to the Amazon S3 system
app-backup/amanda:xfs - Support for backing up raw XFS filesystems using xfsdump
app-backup/backup-manager:s3 - Support for backing up to the Amazon S3 system
app-backup/bacula:bacula-clientonly - Disable DB support, and just build a client
app-backup/bacula:bacula-nodir - Disable building of director
app-backup/bacula:bacula-nosd - Disable building of storage daemon
app-backup/bacula:batch-insert - Enable batch insert into data base
app-backup/bacula:ipv6 - Support IPV6 protocol"
app-backup/bacula:logwatch - Install support files for logwatch
app-backup/bareos:ceph - Enable sys-cluster/ceph support
app-backup/bareos:clientonly - Only install file-daemon (client)
app-backup/bareos:director - Install director
app-backup/bareos:glusterfs - Enable sys-cluster/glusterfs storage backend
app-backup/bareos:lmdb - enable build of dev-db/lmdb support for faster accurate backup
app-backup/bareos:logwatch - Install support files for sys-apps/logwatch
app-backup/bareos:ndmp - Enable support for NDMP (Network Data Management Protocol)
app-backup/bareos:scsi-crypto - Enable low level SCSI crypto support
app-backup/bareos:storage-daemon - Install storage daemon (bareos-sd)
app-backup/bareos:vmware - Enable bareos-fd VMware plugin
app-backup/borgmatic:apprise - Allow backup monitoring to send notification to a wide variety of services, using dev-python/apprise
app-backup/btrbk:lsbtr - Enable the lsbtr command-line tool
app-backup/btrbk:mbuffer - Use sys-block/mbuffer to enable progress bar and buffering/limiting functionality
app-backup/dar:argon2 - Enable password hashing algorithm from app-crypt/argon2
app-backup/dar:dar32 - Enables --enable-mode=32 option, which replace infinite by 32 bit integers
app-backup/dar:dar64 - Enables --enable-mode=64 option, which replace infinite by 64 bit integers
app-backup/dar:gcrypt - Enables strong encryption support
app-backup/dar:gpg - Enables usage of asymmetric encryption algorithms
app-backup/dar:rsync - Enables linking with net-libs/librsync for delta compression support
app-backup/duplicity:s3 - Support for backing up to the Amazon S3 system
app-backup/rear:udev - Have ReaR start backup when attaching your USB drive.
app-backup/snapper:lvm - Enable LVM thinprovisioned snapshots support sys-fs/lvm2
app-backup/snapper:xattr - Add support for getting and setting POSIX extended attributes, through sys-apps/attr.
app-backup/tsm:tsm-cit - IBM Tivoli Common Inventory Technology
app-backup/tsm:tsm-hw - Difference snapshot support for NetApp and N-Series file servers
app-backup/tsm:vmware - Install vmware data protection support
app-benchmarks/filebench:auto-completion - Enable command-line autocompletion using dev-libs/libtecla
app-benchmarks/httperf:idleconn - Build with the idleconn program
app-benchmarks/ioping:netdata - Add support for netdata
app-benchmarks/ramspeed:pic - Force shared libraries to be built as PIC (this is slower)
app-benchmarks/stress-ng:keyutils - Stress test the kernel's key generation facilities via sys-apps/keyutils
app-benchmarks/sysbench:aio - Add support for AIO.
app-benchmarks/sysbench:attachsql - Add support for AttachSQL.
app-benchmarks/sysbench:drizzle - Add support for Drizzles.
app-benchmarks/sysbench:largefile - Add support for large files.
app-cdr/brasero:libburn - Enable dev-libs/libburn backend
app-cdr/brasero:nautilus - Build the gnome-base/nautilus extension
app-cdr/brasero:playlist - Enable support for playlists through dev-libs/totem-pl-parser
app-cdr/brasero:tracker - Enable audio playlist search using the app-misc/tracker indexer
app-cdr/cdemu:cdemu-daemon - Pull app-cdr/cdemu-daemon dependency, useful in chroot environment (bug #315491). Do not disable until you know what you are doing.
app-cdr/dvdisaster:debug - Enable memory debugging.
app-cdr/gaffitter:scripts - Install additional gaffitter scripts for external programs
app-cdr/mirage2iso:pinentry - Support app-crypt/pinentry password input backend.
app-containers/apptainer:network - Install network plug-ins
app-containers/apptainer:suid - Install SUID helper binary
app-containers/buildah:btrfs - Enables dependencies for the "btrfs" graph driver, including necessary kernel flags.
app-containers/containerd:btrfs - Support for BTRFS snapshot driver
app-containers/containerd:cri - Support for Kubernetes CRI
app-containers/containerd:device-mapper - Support for device mapper snapshot driver
app-containers/cri-o:btrfs - Enables dependencies for the "btrfs" graph driver, including necessary kernel flags.
app-containers/cri-o:device-mapper - Enables dependencies for the "devicemapper" graph driver, including necessary kernel flags.
app-containers/crun:bpf - Enable in Kernel, eBPF (enhanced Berkley Packet Filter) support for managing device controllers.
app-containers/crun:criu - Enable CRIU based checkpoint/restore support
app-containers/docker:btrfs - Enables dependencies for the "btrfs" graph driver, including necessary kernel flags.
app-containers/docker:container-init - Makes the a staticly-linked init system tini available inside a container.
app-containers/docker:overlay - Enables dependencies for the "overlay" graph driver, including necessary kernel flags.
app-containers/docker:overlay2 - Enables dependencies for the "overlay2" graph driver, including necessary kernel flags.
app-containers/docker-credential-helpers:pass - Build pass helper for the pass utility.
app-containers/incus:fuidshift - Install the fuidshift binary - currently conflicts with app-containers/lxd
app-containers/lxc:io-uring - Enable io_uring support, and use io_uring instead of epoll
app-containers/lxc:tools - Build and install additional command line tools
app-containers/nerdctl:rootless - Enables dependencies for running in rootless mode.
app-containers/podman:btrfs - Enables btrfs support (graph driver) in Podman
app-containers/podman:cgroup-hybrid - Use legacy (hybrid) cgroups instead of modern (unified) cgroups
app-containers/podman:fuse - Enables fuse dependencies (fuse-overlayfs is especially useful for rootless mode).
app-containers/podman:init - Enables catatonit dependency required for podman run --init.
app-containers/podman:rootless - Enables dependencies for running in rootless mode.
app-containers/podman:wrapper - Install wrapper which lets use podman for command `docker`
app-containers/runc:kmem - Enable Kernel Memory Accounting.
app-containers/skopeo:btrfs - Enables dependencies for the "btrfs" graph driver.
app-containers/skopeo:device-mapper - Compiles with libdevmapper
app-containers/skopeo:rootless - Compiles with libsubid
app-containers/snapd:forced-devmode - Automatically disable application confinement if feature detection fails.
app-crypt/aespipe:cpu_flags_x86_padlock - Use VIA padlock instructions, detected at run time, code still works on non-padlock processors
app-crypt/badkeys:dkim - Enable dkim scan mode via dev-python/dnspython.
app-crypt/badkeys:ssh - Enable ssh scan mode via dev-python/paramiko.
app-crypt/ccid:twinserial - Enable twinserial reader
app-crypt/codecrypt:cryptopp - Build algorithms that need Crypto++ support dev-libs/crypto++
app-crypt/dehydrated:cron - Install cron job to sign/renew non-existent/changed/expiring certificates
app-crypt/eid-mw:dialogs - Enable "askaccess" dialog box, by using x11-libs/gtk+
app-crypt/eid-mw:gtk - All dialogs are available, by using x11-libs/gtk+
app-crypt/eid-mw:p11-kit - Support for app-crypt/p11-kit.
app-crypt/ekeyd:minimal - Only install the ekey-egd-linux service rather than the full ekeyd package.
app-crypt/ekeyd:munin - Install a plugin for net-analyzer/munin to graph statistical data from ekeyd.
app-crypt/ekeyd:usb - Build the libusb-based userland daemon for accessing the EntropyKey (alternative to the CDC USB driver). It is suggested to use this option by default, as the CDC driver in the kernel often seems to be fragile (or the gadget implementation on the EntropyKey is too buggy), and can cause various problems.
app-crypt/gnupg:smartcard - Build scdaemon software. Enables usage of OpenPGP cards. For other type of smartcards, try app-crypt/gnupg-pkcs11-scd. Bring in dev-libs/libusb as a dependency; enable scdaemon.
app-crypt/gnupg:tofu - Enable support for Trust on First use trust model; requires dev-db/sqlite.
app-crypt/gnupg:tools - Install extra tools (including gpgsplit and gpg-zip).
app-crypt/gnupg:tpm - Enable TPM support via app-crypt/tpm2-tss and build tpm2d.
app-crypt/gnupg:usb - Build direct CCID access for scdaemon; requires dev-libs/libusb.
app-crypt/gnupg:user-socket - try a socket directory which is not removed by init manager at session end
app-crypt/gnupg:wks-server - Install the wks-server
app-crypt/gnupg-pkcs11-scd:proxy - Build the gnupg-pkcs11-scd-prox
app-crypt/gpgme:common-lisp - Install common-lisp files
app-crypt/hashcat:brain - Enable the hashcat brain
app-crypt/heimdal:hdb-ldap - Adds support for LDAP as a database backend
app-crypt/heimdal:lmdb - Add support for using dev-db/lmdb for lookup tables
app-crypt/heimdal:otp - Adds support for one-time passwords
app-crypt/ima-evm-utils:tpm - Enable TPM support
app-crypt/johntheripper-jumbo:opencl - Build with opencl/GPU cracking support
app-crypt/johntheripper-jumbo:pcap - Build with pcap support
app-crypt/keybase:fuse - Enable app-crypt/kbfs support
app-crypt/kstart:afs - Enables afs support which means you can acquire an afs token and set PAGs. It's recommended to set this USE if you need authenticated access to an AFS cell for your daemon/app.
app-crypt/libb2:native-cflags - Use CFLAGS as determined by configure script. These flags will enable all CPU specific features it find available, to further optimise the implementation. This discards any existing CFLAGS set in make.conf or similar.
app-crypt/libsecret:tpm - Enable Trusted Platform Module support via app-crypt/tpm2-tss
app-crypt/libu2f-host:systemd - Use user ACLs rather than plugdev group to give user access to the HIDRAW device.
app-crypt/mit-krb5:doc - Creates and installs the API and implementation documentation. This is only useful if you want to develop software which depends on kerberos
app-crypt/mit-krb5:keyutils - Enable for the keyring ccache using keyutils
app-crypt/mit-krb5:lmdb - Add support for using dev-db/lmdb for lookup tables
app-crypt/mit-krb5:openldap - Enable support for ldap as a database backend
app-crypt/mit-krb5:pkinit - Enable pkinit support for the initial ticket
app-crypt/mkp224o:pcre - Search with a regex instead of prefix/suffix matching
app-crypt/onak:dynamic - Support for dynamic loading of backends
app-crypt/onak:hkp - Proxying backend support
app-crypt/ophcrack:tables - Require the additional tables used to carry out cracking (app-crypt/ophcrack-tables)
app-crypt/ophcrack-tables:vistafree - Installs the free Vista ophcrack tables
app-crypt/ophcrack-tables:xpfast - Installs the fast XP ophcrack tables
app-crypt/ophcrack-tables:xpsmall - Installs the small free XP ophcrack tables
app-crypt/pinentry:efl - Build dev-libs/efl based pinentry
app-crypt/qca:botan - Enable botan plugin
app-crypt/qca:gcrypt - Enable gcrypt plugin
app-crypt/qca:gpg - Enable GnuPG plugin
app-crypt/qca:logger - Enable logger plugin
app-crypt/qca:nss - Enable NSS plugin
app-crypt/qca:pkcs11 - Enable PKCS#11 plugin
app-crypt/qca:sasl - Enable SASL plugin
app-crypt/qca:softstore - Enable softstore plugin
app-crypt/rpm-sequoia:nettle - Use dev-libs/nettle as a crypto backend
app-crypt/rpm-sequoia:openssl - Use dev-libs/openssl as a crypto backend
app-crypt/seahorse:ldap - Enable seahorse to manipulate GPG keys on a LDAP server.
app-crypt/swtpm:fuse - Support sys-fs/fuse based /dev/tpm interface
app-crypt/tpm-tools:pkcs11 - Build Token data management utilities based on OpenCryptoki's (dev-libs/opencryptoki) PKCS#11 implementation.
app-crypt/tpm2-pkcs11:fapi - Enable feature API backend
app-crypt/tpm2-tools:fapi - Enable feature API tools
app-crypt/tpm2-totp:plymouth - Add sys-boot/plymouth support
app-crypt/tpm2-tss:fapi - Enable feature API (requires openssl as crypto backend)
app-crypt/tpm2-tss:mbedtls - Use net-libs/mbedtls as crypto engine
app-crypt/tpm2-tss:openssl - Use dev-libs/openssl as crypto engine
app-crypt/tpm2-tss:policy - Enable policy library (requires openssl as crypto backend)
app-crypt/zulucrypt:kwallet - Enable encrypted storage of passwords with kde-frameworks/kwallet
app-crypt/zulucrypt:udev - Whether udev will be consulted when deciding if a volume is system or not
app-dicts/aspell-be:classic - Support classic spelling by default
app-dicts/gwaei:hunspell - Enable app-text/hunspell spellchecking and morphological analysis
app-dicts/gwaei:mecab - Enable app-text/mecab support
app-dicts/myspell-pt:preao - Use the pre ortographic agreement version of the dictionary
app-doc/csound-manual:html - Install HTML documentation
app-doc/devmanual:offline - Use alternative minimal stylesheet instead of Tyrian theme
app-doc/kicad-doc:html - Generate documentation in HTML format
app-doc/kicad-doc:pdf - Generate documentation in PDF format
app-doc/linuxfromscratch:htmlsingle - Install all-on-one-page HTML version.
app-doc/pms:html - Generate and install PMS as .html as well
app-doc/pms:twoside - Enable two-sided layout suitable for printing
app-doc/pms-bin:html - Install PMS as .html as well
app-doc/tldp-howto:html - Install multi-chapter HTML docs
app-doc/tldp-howto:htmlsingle - Install all-on-one-page HTML docs
app-doc/tldp-howto:pdf - Install pdf docs
app-doc/tldp-howto:text - Install plain-text docs
app-editors/bluefish:gucharmap - Enable gucharmap dictionary plugin
app-editors/bluefish:spell - Enable spell checking capabilities via enchant library
app-editors/emacs:athena - Enable the MIT Athena widget set (x11-libs/libXaw)
app-editors/emacs:dynamic-loading - Enable loading of dynamic libraries (modules) at runtime
app-editors/emacs:games - Support shared score files for games
app-editors/emacs:gfile - Use gfile (dev-libs/glib) for file notification
app-editors/emacs:gmp - Use the GNU multiple precision arithmetic library (dev-libs/gmp) instead of the bundled mini-gmp subset
app-editors/emacs:gsettings - Use gsettings (dev-libs/glib) to read the system font name
app-editors/emacs:gzip-el - Compress bundled Emacs Lisp source
app-editors/emacs:harfbuzz - Use media-libs/harfbuzz as text shaping engine
app-editors/emacs:imagemagick - Use media-gfx/imagemagick for image processing
app-editors/emacs:jit - Compile with Emacs Lisp native compiler support via libgccjit
app-editors/emacs:json - Compile with native JSON support using dev-libs/jansson
app-editors/emacs:libxml2 - Use dev-libs/libxml2 to parse XML instead of the internal Lisp implementations
app-editors/emacs:mailutils - Retrieve e-mail using net-mail/mailutils instead of the internal movemail substitute
app-editors/emacs:source - Install C source files and make them available for find-function
app-editors/emacs:threads - Add elisp threading support
app-editors/emacs:toolkit-scroll-bars - Use the selected toolkit's scrollbars in preference to Emacs' own scrollbars
app-editors/emacs:tree-sitter - Support the dev-libs/tree-sitter parsing library
app-editors/emacs:wide-int - Prefer wide Emacs integers (typically 62-bit). This option has an effect only on 32-bit systems, where it increases the maximum buffer size from 0.5 to 2 GiB, at the cost of 10% to 30% Lisp slowdown.
app-editors/fe:sendmail - Send mail after editor abend
app-editors/featherpad:X - Link application against X11 libraries which adds support for virtual desktop awareness and tab DND
app-editors/gedit-plugins:charmap - Insert special characters just by clicking on them
app-editors/gedit-plugins:git - Shows document changes related to git's HEAD
app-editors/gedit-plugins:terminal - Embed a terminal in the bottom pane
app-editors/gnome-latex:latexmk - Install dev-tex/latexmk (used by default for the build tools)
app-editors/gnome-latex:rubber - Install dev-tex/rubber (can be used for the build tools)
app-editors/gvim:crypt - Use dev-libs/libsodium for crypto support
app-editors/gvim:cscope - Enable cscope interface
app-editors/gvim:netbeans - Include netbeans external editor integration support
app-editors/gvim:racket - Enable support for Scheme using dev-scheme/racket
app-editors/helix:grammar - Build and install grammar language files
app-editors/jasspa-microemacs:nanoemacs - Build NanoEmacs instead of MicroEmacs
app-editors/joe:xterm - Enable full xterm clipboard support
app-editors/leafpad:emacs - Enable Emacs key theme
app-editors/mousepad:shortcuts - Build the "shortcuts" plugin
app-editors/nano:debug - Enable debug messages and assert warnings. Note that these will all be sent straight to stderr rather than some logging facility.
app-editors/nano:justify - Enable justify/unjustify functions for text formatting.
app-editors/nano:magic - Add magic file support (sys-apps/file) to automatically detect appropriate syntax highlighting
app-editors/nano:minimal - Disable all fancy features, including ones that otherwise have a dedicated USE flag (such as spelling).
app-editors/neovim:nvimpager - Install nvimpager symlink to less.sh macro
app-editors/okteta:designer - Build plugins for dev-qt/designer
app-editors/qhexedit2:gui - Install Qt5 hex editor
app-editors/tea:aspell - Enable spellchecking using app-text/aspell
app-editors/vim:X - Link console vim against X11 libraries to enable title and clipboard features in xterm
app-editors/vim:crypt - Use dev-libs/libsodium for crypto support
app-editors/vim:cscope - Enable cscope interface
app-editors/vim:racket - Enable support for Scheme using dev-scheme/racket
app-editors/vim:terminal - Enable terminal emulation support
app-editors/vim:vim-pager - Install vimpager and vimmanpager links
app-editors/vis:tre - more memory efficient regex search using dev-libs/tre
app-editors/vscode:egl - Use EGL platform, enables smooth rending in high refresh rate monitors on X11/Xwayland
app-editors/vscode:wayland - Run in wayland mode under wayland sessions, xwayland otherwise. This flag doesn't affect x11 sessions.
app-editors/vscodium:egl - Use EGL platform, enables smooth rending in high refresh rate monitors on X11/Xwayland
app-editors/vscodium:wayland - Run in wayland mode under wayland sessions, xwayland otherwise. This flag doesn't affect x11 sessions.
app-editors/xemacs:athena - Chooses the MIT Athena widget set
app-editors/xemacs:bignum - Support for OpenSSL bignum implementation
app-editors/xemacs:dnd - Enables support for the x11-libs/dnd drag-n-drop library
app-editors/xemacs:pop - Support POP for mail retrieval
app-editors/xemacs:xim - Enable X11 XiM input method
app-editors/zed:gles - Use simplified OpenGLES instead of full-scale OpenGL
app-emacs/auctex:preview-latex - Use bundled preview-latex
app-emacs/bbdb:tex - Install plain TeX support files
app-emacs/bbdb:vm - Add support for app-emacs/vm
app-emacs/bbdb:wanderlust - Add support for app-emacs/wanderlust
app-emacs/calfw:howm - Add support for the app-emacs/howm note-taking tool
app-emacs/elscreen:wanderlust - Include support for app-emacs/wanderlust
app-emacs/emacs-common:games - Support shared score files for games
app-emacs/emacs-common:gsettings - Install schema file for gsettings (dev-libs/glib)
app-emacs/emacs-w3m:gzip-el - Compress bundled Emacs Lisp source
app-emacs/flim:oauth2 - Support OAuth2 authentication (app-emacs/oauth2)
app-emacs/gap-mode:completion - Install GAP backend for app-emacs/company-mode to "complete anything."
app-emacs/gap-mode:lint - Support automatically linting GAP code via app-emacs/flycheck and dev-gap/gaplint.
app-emacs/mu-cite:bbdb - Include support for app-emacs/bbdb
app-emacs/org-mode:odt-schema - Install non-free schema files for OpenDocument Text exporter
app-emacs/remember:bbdb - Include support for app-emacs/bbdb
app-emacs/remember:planner - Include support for app-emacs/planner
app-emacs/slime:xref - Install xref.lisp cross-referencing tool
app-emacs/sly:xref - Install xref.lisp cross-referencing tool
app-emacs/vm:bbdb - Include support for app-emacs/bbdb
app-emacs/wanderlust:bbdb - Include support for app-emacs/bbdb
app-emacs/wikipedia-mode:outline-magic - Enable support for outline-mode extensions (app-emacs/outline-magic)
app-emulation/86Box:experimental - Enable hardware from devbranch, which may be unstable or unusable.
app-emulation/86Box:fluidsynth - Enable MIDI support through media-sound/fluidsynth.
app-emulation/86Box:munt - Enable MIDI MT-32 support through media-libs/munt-mt32emu.
app-emulation/86Box:new-dynarec - Enable new dynamic recompiler from PCem 15, which should provide an even better emulation speed.
app-emulation/aranym:clipboard - Enable bidirectional clipboard transfer between the host and FreeMiNT
app-emulation/aranym:jit - Build Just-In-Time compiler variant with increased performance
app-emulation/aranym:lilo - Enable support for directly booting kernels such as Linux
app-emulation/aranym:osmesa - Allow images to be rendered in memory using the host CPU
app-emulation/aranym:pmmu - Build full PMMU variant, required for running mainline Linux
app-emulation/aranym:standard - Build standard (no JIT or PMMU) variant
app-emulation/bochs:3dnow - Enable support for emulating 3DNow! instructions (incomplete)
app-emulation/bochs:avx - Enable support for emulating Advanced Vector Extensions (AVX)
app-emulation/bochs:debugger - Enable debugger (slows down emulation)
app-emulation/bochs:gdb - Enable support for the remote GDB stub
app-emulation/bochs:x86-64 - Enable support for emulation of 64-bit CPUs
app-emulation/crossover-bin:capi - Enable ISDN support via CAPI
app-emulation/crossover-bin:osmesa - Add support for OpenGL in bitmaps using libOSMesa
app-emulation/crossover-bin:pcap - Support packet capture software (e.g. wireshark)
app-emulation/dosemu:fluidsynth - use media-sound/fluidsynth for MIDI emulation
app-emulation/dxvk:crossdev-mingw - Use sys-devel/crossdev for the toolchain rather than dev-util/mingw64-toolchain (requires manual setting up)
app-emulation/dxvk:d3d10 - Enable support for DirectX 10 (d3d10.dll)
app-emulation/dxvk:d3d11 - Enable support for DirectX 11 (d3d11.dll)
app-emulation/dxvk:d3d8 - Enable support for DirectX 8 (d3d8.dll)
app-emulation/dxvk:d3d9 - Enable support for DirectX 9 (d3d9.dll)
app-emulation/dxvk:dxgi - Enable support for the DirectX Graphics Infrastructure (dxgi.dll)
app-emulation/faudio:dumpvoices - FAudio dumps buffer data to individual files with RIFF/XWMA headers, usable with players like ffplay/testxwma.
app-emulation/fs-uae:fmv - Enable support for CD32 FMV (full motion video)
app-emulation/fs-uae:glew - Enable support for The OpenGL Extension Wrangler Library (media-libs/glew)
app-emulation/fs-uae-launcher:lha - Enable LHA archive support
app-emulation/fuse:backend-X - Use X11 rendering backend
app-emulation/fuse:backend-fbcon - Use framebuffer rendering backend
app-emulation/fuse:backend-gtk3 - Use Gtk+ rendering backend
app-emulation/fuse:backend-sdl - Use SDL rendering backend
app-emulation/fuse:backend-svga - Use svgalib rendering backend
app-emulation/fuse:memlimit - Add compile-time memory usage limiting
app-emulation/fuse-utils:gcrypt - Use dev-libs/libgcrypt for low-level crypto of some features, including logfiles.
app-emulation/grub-xen-host:pvh - Build an additional grub bin for pvh.
app-emulation/hercules-sdl:object-rexx - Enable REXX support via Open Object Rexx (dev-lang/oorexx)
app-emulation/hercules-sdl:regina-rexx - Enable REXX support via Regina Rexx (dev-lang/regina-rexx)
app-emulation/libcacard:passthrough - Enable smartcard passthrough support via sys-apps/pcsc-lite
app-emulation/libguestfs:erlang - Build Erlang bindings
app-emulation/libguestfs:fuse - Enable image mount support via sys-fs/fuse
app-emulation/libguestfs:inspect-icons - Use media-gfx/icoutils for accessing/inspecting icon file within images
app-emulation/libguestfs:libvirt - Use app-emulation/libvirt to manipulate VMs
app-emulation/libguestfs:systemtap - Use dev-debug/systemtap to inspect VM via "probes"
app-emulation/libspectrum:gcrypt - Use dev-libs/libgcrypt for low-level crypto of some features, including logfiles.
app-emulation/libvirt:dtrace - Enable dtrace support via dev-debug/systemtap
app-emulation/libvirt:firewalld - DBus interface to iptables/ebtables allowing for better runtime management of your firewall.
app-emulation/libvirt:fuse - Allow LXC to use sys-fs/fuse for mountpoints
app-emulation/libvirt:glusterfs - Enable GlusterFS support via sys-cluster/glusterfs
app-emulation/libvirt:iscsi - Allow using an iSCSI remote storage server as pool for disk image storage
app-emulation/libvirt:iscsi-direct - Allow using libiscsi for iSCSI storage pool backend
app-emulation/libvirt:libssh - Use net-libs/libssh to communicate with remote libvirtd hosts, for example: qemu+libssh://server/system
app-emulation/libvirt:libssh2 - Use net-libs/libssh2 to communicate with remote libvirtd hosts, for example: qemu+libssh2://server/system
app-emulation/libvirt:libvirtd - Builds the libvirtd daemon as well as the client utilities instead of just the client utilities
app-emulation/libvirt:lvm - Allow using the Logical Volume Manager (sys-fs/lvm2) as pool for disk image storage
app-emulation/libvirt:lxc - Support management of Linux Containers virtualisation (app-containers/lxc)
app-emulation/libvirt:nbd - Allow using sys-block/nbdkit to access network disks
app-emulation/libvirt:nfs - Allow using Network File System mounts as pool for disk image storage
app-emulation/libvirt:numa - Use NUMA for memory segmenting via sys-process/numactl and sys-process/numad
app-emulation/libvirt:openvz - Support management of OpenVZ virtualisation (openvz-sources)
app-emulation/libvirt:parted - Allow using real disk partitions as pool for disk image storage, using sys-block/parted to create, resize and delete them.
app-emulation/libvirt:pcap - Support auto learning IP addreses for routing
app-emulation/libvirt:qemu - Support management of QEMU virtualisation (app-emulation/qemu)
app-emulation/libvirt:rbd - Enable rados block device support via sys-cluster/ceph
app-emulation/libvirt:virt-network - Enable virtual networking (NAT) support for guests. Includes all the dependencies for NATed network mode. Effectively any network setup that relies on libvirt to setup and configure network interfaces on your host. This can include bridged and routed networks ONLY if you are allowing libvirt to create and manage the underlying devices for you. In some cases this requires enabling the 'netcf' USE flag (currently unavailable).
app-emulation/libvirt:virtiofsd - Drag in virtiofsd dependency app-emulation/virtiofsd
app-emulation/libvirt:virtualbox - Support management of VirtualBox virtualisation (app-emulation/virtualbox)
app-emulation/libvirt:wireshark-plugins - Build the net-analyzer/wireshark plugin for the Libvirt RPC protocol
app-emulation/libvirt:xen - Support management of Xen virtualisation (app-emulation/xen)
app-emulation/libvirt:zfs - Enable ZFS backend storage sys-fs/zfs
app-emulation/nemu:network-map - Adds possibility of exporting network map to SVG
app-emulation/nemu:ovf - Adds support for OVA/OVF import
app-emulation/nemu:remote-api - Adds API for remote control
app-emulation/nemu:spice - Adds Spice protocol support
app-emulation/nemu:vnc-client - Adds support for external VNC client
app-emulation/open-vm-tools:deploypkg - Build deploypkg plugin
app-emulation/open-vm-tools:dnet - Enable support for nicinfo
app-emulation/open-vm-tools:doc - Generate API documentation
app-emulation/open-vm-tools:fuse - Enable vmblock-fuse/vmhgfs-fuse
app-emulation/open-vm-tools:gtkmm - Compile with Gtkmm and sigc++ (Recommended)
app-emulation/open-vm-tools:multimon - Enable multimon (Requires X)
app-emulation/open-vm-tools:resolutionkms - Build the linux/unix resolutionkms module
app-emulation/open-vm-tools:vgauth - Build vgauth
app-emulation/pcem:networking - Enable support for emulation of network cards.
app-emulation/punes:cg - Add support for Nvidia CG Toolkit
app-emulation/q4wine:ico - Enable ico support via media-gfx/icoutils
app-emulation/q4wine:iso - Support unprivileged mounting of ISO9660 images via sys-fs/fuseiso
app-emulation/q4wine:wineappdb - Enable Wine AppDB browser support
app-emulation/qemu:accessibility - Adds support for braille displays using brltty
app-emulation/qemu:aio - Enables support for Linux's Async IO
app-emulation/qemu:alsa - Enable alsa output for sound emulation
app-emulation/qemu:bpf - Enable eBPF support for RSS implementation.
app-emulation/qemu:capstone - Enable disassembly support with dev-libs/capstone
app-emulation/qemu:curl - Support ISOs / -cdrom directives via HTTP or HTTPS.
app-emulation/qemu:fdt - Enables firmware device tree support
app-emulation/qemu:fuse - Enables FUSE block device export
app-emulation/qemu:glusterfs - Enables GlusterFS cluster fileystem via sys-cluster/glusterfs
app-emulation/qemu:gnutls - Enable TLS support for the VNC console server. For 1.4 and newer this also enables WebSocket support. For 2.0 through 2.3 also enables disk quorum support.
app-emulation/qemu:io-uring - Enable efficient I/O via sys-libs/liburing.
app-emulation/qemu:iscsi - Enable direct iSCSI support via net-libs/libiscsi instead of indirectly via the Linux block layer that sys-block/open-iscsi does.
app-emulation/qemu:jemalloc - Enable jemalloc allocator support
app-emulation/qemu:jpeg - Enable jpeg image support for the VNC console server
app-emulation/qemu:keyutils - Support Linux keyrings via sys-apps/keyutils
app-emulation/qemu:multipath - Enable multipath persistent reservation passthrough via sys-fs/multipath-tools.
app-emulation/qemu:ncurses - Enable the ncurses-based console
app-emulation/qemu:nfs - Enable NFS support
app-emulation/qemu:numa - Enable NUMA support
app-emulation/qemu:pin-upstream-blobs - Pin the versions of BIOS firmware to the version included in the upstream release. This is needed to sanely support migration/suspend/resume/snapshotting/etc... of instances. When the blobs are different, random corruption/bugs/crashes/etc... may be observed.
app-emulation/qemu:pipewire - Enable pipewire output for sound emulation
app-emulation/qemu:plugins - Enable qemu plugin API via shared library loading.
app-emulation/qemu:png - Enable png image support for the VNC console server
app-emulation/qemu:pulseaudio - Enable pulseaudio output for sound emulation
app-emulation/qemu:rbd - Enable rados block device backend support, see https://docs.ceph.com/en/mimic/rbd/qemu-rbd/
app-emulation/qemu:sdl - Enable the SDL-based console
app-emulation/qemu:sdl-image - SDL Image support for icons
app-emulation/qemu:slirp - Enable TCP/IP in hypervisor via net-libs/libslirp
app-emulation/qemu:spice - Enable Spice protocol support via app-emulation/spice
app-emulation/qemu:ssh - Enable SSH based block device support via net-libs/libssh2
app-emulation/qemu:static - Build the User and Software MMU (system) targets as well as tools as static binaries
app-emulation/qemu:static-user - Build the User targets as static binaries
app-emulation/qemu:systemtap - Enable SystemTap/DTrace tracing
app-emulation/qemu:usb - Enable USB passthrough via dev-libs/libusb
app-emulation/qemu:usbredir - Use sys-apps/usbredir to redirect USB devices to another machine over TCP
app-emulation/qemu:vde - Enable VDE-based networking
app-emulation/qemu:vhost-net - Enable accelerated networking using vhost-net, see https://www.linux-kvm.org/page/VhostNet
app-emulation/qemu:virgl - Enable experimental Virgil 3d (virtual software GPU)
app-emulation/qemu:virtfs - Enable VirtFS via virtio-9p-pci / fsdev. See https://wiki.qemu.org/Documentation/9psetup
app-emulation/qemu:vte - Enable terminal support (x11-libs/vte) in the GTK+ interface
app-emulation/qemu:xattr - Add support for getting and setting POSIX extended attributes, through sys-apps/attr. Requisite for the virtfs backend.
app-emulation/qemu:xdp - Enable support for XDP through net-libs/xdp-tools
app-emulation/qemu:xen - Enables support for Xen backends
app-emulation/ski:debug - enable extra binary emulation debugging via sys-libs/binutils-libs
app-emulation/spice:smartcard - Enable smartcard remoting using app-emulation/libcacard
app-emulation/uade:fuse - Enable sys-fs/fuse uadefs frontend for on-the-fly WAV conversion
app-emulation/vice:ethernet - Enable ethernet emulation
app-emulation/vice:headless - Include the headless variant of the emulator
app-emulation/vice:mpg123 - Enable mp3@64 cartridge support
app-emulation/vice:parport - Enable parallel port SID support
app-emulation/vice:pci - Enable PCI device discovery using sys-apps/pciutils
app-emulation/virt-manager:policykit - Enables sys-auth/polkit authentication support, required when using app-emulation/libvirt with PolicyKit authentication
app-emulation/virt-manager:sasl - Depend on the proper libraries needed to connect to SASL-enabled libvirtd instances (e.g. Kerberos-protected instances).
app-emulation/virt-viewer:libvirt - Support connecting to virtual machines managed by libvirt.
app-emulation/virt-viewer:spice - Support connecting to SPICE-enabled virtual machines.
app-emulation/virt-viewer:vnc - Support connecting to VNC-enabled virtual machines.
app-emulation/virt-viewer:vte - Enable terminal support (x11-libs/vte) in the GTK+ interface
app-emulation/virt-what:dmi - Use sys-apps/dmidecode to read firmware data
app-emulation/virtualbox:dtrace - Install dtrace Extension Pack.
app-emulation/virtualbox:headless - Build without any graphic frontend.
app-emulation/virtualbox:lvm - Build VBoxVolInfo that needs devicemapper from sys-fs/lvm2.
app-emulation/virtualbox:pax-kernel - Apply patch needed for pax enabled kernels.
app-emulation/virtualbox:sdk - Enable building of SDK.
app-emulation/virtualbox:udev - Controls installation of special USB udev rules.
app-emulation/virtualbox:vboxwebsrv - Build and install the VirtualBox webservice.
app-emulation/virtualbox:vde - Support for VDE networking via net-misc/vde.
app-emulation/virtualbox:vmmraw - Enable 32-bit support on a 64-bit kernel.
app-emulation/virtualbox-kvm:dtrace - Install dtrace Extension Pack
app-emulation/virtualbox-kvm:hardened - Enable hardening and install binaries SUID
app-emulation/virtualbox-kvm:lvm - Build VBoxVolInfo that needs devicemapper from sys-fs/lvm2.
app-emulation/virtualbox-kvm:sdk - Enable building of SDK
app-emulation/virtualbox-kvm:udev - Controls installation of special USB udev rules.
app-emulation/virtualbox-kvm:vboxwebsrv - Build and install the VirtualBox webservice
app-emulation/virtualbox-kvm:vde - Support for VDE networking via net-misc/vde
app-emulation/virtualbox-kvm:vmmraw - Enable 32-bit support on a 64-bit kernel.
app-emulation/vkd3d:spirv-tools - Enable SPIRV shader debugging support using dev-util/spirv-tools
app-emulation/vkd3d-proton:crossdev-mingw - Use sys-devel/crossdev for the toolchain rather than dev-util/mingw64-toolchain (requires manual setting up)
app-emulation/vkd3d-proton:extras - Install extra tools and demos in /usr/lib/vkd3d-proton
app-emulation/wine-gecko:shared - Install pre-unpacked files which do not need to be copied into the Wine prefix
app-emulation/wine-mono:shared - Install pre-unpacked files which do not need to be copied into the Wine prefix (note that this requires the default top-level Z: drive to be kept for out-of-prefix files to be readable)
app-emulation/wine-proton:crossdev-mingw - Use sys-devel/crossdev for the toolchain rather than dev-util/mingw64-toolchain (requires manual setting up)
app-emulation/wine-proton:gecko - Enable mshtml support using app-emulation/wine-gecko
app-emulation/wine-proton:mono - Enable .NET support using app-emulation/wine-mono
app-emulation/wine-proton:osmesa - Enable off-screen rendering (OpenGL in bitmaps) support
app-emulation/wine-proton:perl - Install helpers that require perl (winedump/winemaker)
app-emulation/wine-proton:sdl - Enable gamepad support using media-libs/libsdl2
app-emulation/wine-proton:vkd3d - Enable DirectX 12 support using app-emulation/vkd3d
app-emulation/wine-proton:wow64 - Enable running 32bit applications without 32bit ELF multilib by mapping to 64bit calls (experimental, *may* have worse/unusable OpenGL performance or other issues compared to USE=abi_x86_32, also lacks 16bit support) -- still need dev-util/mingw64-toolchain with abi_x86_32 which itself does not need multilib
app-emulation/wine-staging:capi - Enable ISDN support using net-libs/libcapi
app-emulation/wine-staging:crossdev-mingw - Use sys-devel/crossdev for the toolchain rather than dev-util/mingw64-toolchain (requires manual setting up)
app-emulation/wine-staging:dos - Pull in games-emulation/dosbox to run DOS applications
app-emulation/wine-staging:gecko - Enable mshtml support using app-emulation/wine-gecko
app-emulation/wine-staging:mingw - Build PE files using a MinGW toolchain for better compatibility
app-emulation/wine-staging:mono - Enable .NET support using app-emulation/wine-mono
app-emulation/wine-staging:netapi - Enable support for configuring remote shares using net-fs/samba
app-emulation/wine-staging:osmesa - Enable off-screen rendering (OpenGL in bitmaps) support
app-emulation/wine-staging:pcap - Support packet capture software (e.g. wireshark)
app-emulation/wine-staging:perl - Install helpers that require perl (winedump/winemaker)
app-emulation/wine-staging:samba - Pull in net-fs/samba with winbind for NTLM auth support
app-emulation/wine-staging:sdl - Enable gamepad support using media-libs/libsdl2
app-emulation/wine-staging:wow64 - Enable running 32bit applications without 32bit ELF multilib by mapping to 64bit calls (experimental, *may* have worse/unusable OpenGL performance or other issues compared to USE=abi_x86_32, also lacks 16bit support) -- still need dev-util/mingw64-toolchain with abi_x86_32 which itself does not need multilib
app-emulation/wine-vanilla:capi - Enable ISDN support using net-libs/libcapi
app-emulation/wine-vanilla:crossdev-mingw - Use sys-devel/crossdev for the toolchain rather than dev-util/mingw64-toolchain (requires manual setting up)
app-emulation/wine-vanilla:dos - Pull in games-emulation/dosbox to run DOS applications
app-emulation/wine-vanilla:gecko - Enable mshtml support using app-emulation/wine-gecko
app-emulation/wine-vanilla:mingw - Build PE files using a MinGW toolchain for better compatibility
app-emulation/wine-vanilla:mono - Enable .NET support using app-emulation/wine-mono
app-emulation/wine-vanilla:netapi - Enable support for configuring remote shares using net-fs/samba
app-emulation/wine-vanilla:osmesa - Enable off-screen rendering (OpenGL in bitmaps) support
app-emulation/wine-vanilla:pcap - Support packet capture software (e.g. wireshark)
app-emulation/wine-vanilla:perl - Install helpers that require perl (winedump/winemaker)
app-emulation/wine-vanilla:samba - Pull in net-fs/samba with winbind for NTLM auth support
app-emulation/wine-vanilla:sdl - Enable gamepad support using media-libs/libsdl2
app-emulation/wine-vanilla:vkd3d - Enable DirectX 12 support using app-emulation/vkd3d
app-emulation/wine-vanilla:wow64 - Enable running 32bit applications without 32bit ELF multilib by mapping to 64bit calls (experimental, *may* have worse/unusable OpenGL performance or other issues compared to USE=abi_x86_32, also lacks 16bit support) -- still need dev-util/mingw64-toolchain with abi_x86_32 which itself does not need multilib
app-emulation/winetricks:rar - Pull in app-arch/unrar for extraction of rar-compressed game files
app-emulation/x48:readline - Enables support for libreadline
app-emulation/xe-guest-utilities:xenstore - Use xenstore binaries bundled by Citrix instead of building app-emulation/xen-tools
app-emulation/xen:boot-symlinks - Symlink xen.gz variants in /boot, disable on fat filesystems
app-emulation/xen:flask - Enable the Flask XSM module from NSA
app-emulation/xen:uefi - Adds UEFI boot support, requires LDFLAG -melf_x86_64 for amd64
app-emulation/xen-tools:api - Build the C libxenapi bindings
app-emulation/xen-tools:hvm - Enable support for hardware based virtualization (VT-x,AMD-v)
app-emulation/xen-tools:ipxe - Enable ipxe support
app-emulation/xen-tools:ovmf - Enable support to boot UEFI guest vm, needed by hvm
app-emulation/xen-tools:pygrub - Install the pygrub boot loader
app-emulation/xen-tools:qemu - Enable IOEMU support via the use of qemu-dm
app-emulation/xen-tools:qemu-traditional - Build the old qemu traditional device model (useful only if you cannot change to the new device model e.g. Windows VMs)
app-emulation/xen-tools:rombios - Enable rombios support, needed by ipxe
app-emulation/xen-tools:screen - Enable support for running domain U console in an app-misc/screen session
app-emulation/xen-tools:system-ipxe - Using sys-firmware/ipxe instead of the bundled one
app-emulation/xen-tools:system-qemu - Using app-emulation/qemu instead of the bundled one
app-emulation/xen-tools:system-seabios - Using sys-firmware/seabios instead of the bundled one
app-emulation/xtrs:ls-dos - Install LS-DOS disk images for Model 4P
app-eselect/eselect-php:fpm - Enable the FastCGI Process Manager SAPI
app-eselect/eselect-wine:xdg - Set XDG_DATA_DIRS to use the selected wine.desktop, allows e.g. 'xdg-open my.exe' for file managers
app-forensics/afflib:fuse - Enable extra fuse thingies
app-forensics/afflib:qemu - Enable qemu stuff
app-forensics/afflib:s3 - Enable support for Amazon S3
app-forensics/aide:curl - Use curl for http,https and ftp backends
app-forensics/aide:e2fs - Enable support for checking file attributes on ext2/ext3/ext4 filesystems
app-forensics/chkrootkit:cron - Install cron script for weekly rootkit scans
app-forensics/honggfuzz:clang - Enable clang support (pull sys-libs/blocksruntime dependency).
app-forensics/lynis:cron - Install /etc/cron.* files
app-forensics/sleuthkit:aff - Enable extra aff formats
app-forensics/sleuthkit:ewf - Enable libewf support
app-forensics/volatility3:crypt - support plugins that decrypt passwords, password hashes, etc.
app-forensics/volatility3:disasm - support plugins that perform malware analysis and disassemble code
app-forensics/volatility3:jsonschema - improve error messages regarding improperly configured ISF files
app-forensics/volatility3:leechcore - support memory acquisition via leechcore
app-forensics/volatility3:snappy - support AVMLs native compression format
app-forensics/volatility3:yara - support YARA pattern matching engine
app-forensics/yara:cuckoo - Enable cockoo module
app-forensics/yara:dex - Enable dex module
app-forensics/yara:dotnet - Enable dotnet module
app-forensics/yara:macho - Enable macho module
app-forensics/yara:magic - Enable magic module
app-forensics/yara:profiling - Enable rules profiling
app-forensics/yara:python - Pulls in python binding via dev-python/yara-python
app-i18n/fcitx:autostart - Enable XDG-compatible autostart of Fcitx
app-i18n/fcitx:emoji - Enable emoji loading for CLDR
app-i18n/fcitx:enchant - Enable Enchant backend (using app-text/enchant) for spelling hinting
app-i18n/fcitx:gtk2 - Install input method module for GTK+ 2
app-i18n/fcitx:gtk3 - Install input method module for GTK+ 3
app-i18n/fcitx:keyboard - Enable key event translation with XKB and build keyboard engine
app-i18n/fcitx:opencc - Enable OpenCC engine (using app-i18n/opencc) for converter between Simplified Chinese and Traditional Chinese
app-i18n/fcitx:pango - Enable support for x11-libs/pango
app-i18n/fcitx:presage - Enable presage for word predication (not stable)
app-i18n/fcitx:server - Build a fcitx as server, disable this option if you want to use fcitx as an embedded library
app-i18n/fcitx:table - Install table input methods for Simplified Chinese
app-i18n/fcitx:xkb - Enable support for XKB (required for fcitx-xkb, fcitx-xkbdbus, part of fcitx-keyboard)
app-i18n/fcitx-chinese-addons:cloudpinyin - Build cloud pinyin addon
app-i18n/fcitx-chinese-addons:data - Build data
app-i18n/fcitx-chinese-addons:gui - Enable GUI support (qt5 or qt6)
app-i18n/fcitx-chinese-addons:opencc - Enable support for conversion between Traditional and Simplified Chinese
app-i18n/fcitx-chinese-addons:qt5 - Enable configure qt5
app-i18n/fcitx-chinese-addons:webengine - Enable built-in browser using dev-qt/qtwebengine
app-i18n/fcitx-configtool:config-qt - Enable fcitx5-config-qt
app-i18n/fcitx-configtool:kcm - Enable KDE KCM support
app-i18n/fcitx-configtool:test - Enable Test
app-i18n/fcitx-gtk:gtk2 - Install input method module for GTK+ 2
app-i18n/fcitx-gtk:gtk3 - Enable support for GTK+3
app-i18n/fcitx-gtk:gtk4 - Enable support for GTK 4
app-i18n/fcitx-gtk:onlyplugin - Build only plugin
app-i18n/fcitx-gtk:snooper - Enable key snooper for gtk app
app-i18n/fcitx-libpinyin:dictionary-manager - Install dictionary manager
app-i18n/fcitx-lua:dlopen - Use dlopen to load lua library
app-i18n/fcitx-qt:onlyplugin - Build only plugin
app-i18n/fcitx-qt:qt6 - Build support for QT6
app-i18n/fcitx-qt:staticplugin - Build plugin as static
app-i18n/fcitx-rime:configuration-tool - Install configuration tool
app-i18n/fcitx-unikey:macro-editor - Install macro editor
app-i18n/ibus:emoji - Enable support for Emoji
app-i18n/ibus:gtk2 - Enable the GTK-2 input method module
app-i18n/ibus:gtk3 - Enable the GTK-3 input method module
app-i18n/ibus:gtk4 - Enable the GTK-4 input method module
app-i18n/ibus:unicode - Enable support for Unicode choice
app-i18n/ibus-handwrite:zinnia - Enable support for app-i18n/zinnia
app-i18n/ibus-libpinyin:boost - Compile against dev-libs/boost libraries
app-i18n/ibus-libpinyin:opencc - Enable support for app-i18n/opencc
app-i18n/ibus-pinyin:boost - Enable support for dev-libs/boost
app-i18n/im-chooser:xfce - Enable support for XFCE panel
app-i18n/imsettings:xfconf - Enable support for xfce-base/xfconf
app-i18n/libime:data - Build data
app-i18n/librime:debug - Enable debugging (including logging of input of RIME input methods)
app-i18n/mozc:fcitx4 - Enable support for app-i18n/fcitx 4
app-i18n/mozc:fcitx5 - Enable support for app-i18n/fcitx 5
app-i18n/mozc:gui - Install graphical user interface tool (mozc_tool)
app-i18n/mozc:ibus - Enable support for app-i18n/ibus
app-i18n/mozc:renderer - Enable native candidate window
app-i18n/pyzy:boost - Enable support for dev-libs/boost
app-i18n/pyzy:doc - Generate API documentation
app-i18n/pyzy:opencc - Enable support for app-i18n/opencc
app-i18n/rime-data:extra - Install extra packages
app-i18n/scim:gtk3 - Enable support for x11-libs/gtk+:3
app-i18n/scim-anthy:gtk3 - Enable support for x11-libs/gtk+:3
app-i18n/scim-anthy:kasumi - Use Anthy dictionary maintenance tool (app-dicts/kasumi)
app-i18n/tomoe:hyperestraier - Enable support for app-text/hyperestraier
app-i18n/uim:anthy - Enable support for app-i18n/anthy
app-i18n/uim:eb - Enable support for dev-libs/eb
app-i18n/uim:gtk2 - Enable support for x11-libs/gtk+:2
app-i18n/uim:skk - Enable support for app-i18n/skk-jisyo
app-laptop/hdapsd:libconfig - Require dev-libs/libconfig to allow the daemon to read a configuration file at startup
app-laptop/ibam:gkrellm - Enable building of app-admin/gkrellm module
app-laptop/laptop-mode-tools:apm - Add APM (Advanced Power Management) support
app-laptop/pbbuttonsd:ibam - Enable support for Intelligent Battery Monitoring
app-laptop/pbbuttonsd:macbook - Enable support for the Macbook and Macbook Pro
app-laptop/thinkfan:atasmart - include libatasmart support to get disc temperature
app-laptop/thinkfan:nvidia - allow thinkfan to read GPU temperature from the proprietary nVidia driver
app-laptop/thinkfan:yaml - use YAML format for config file
app-laptop/tp_smapi:hdaps - Install a compatible HDAPS module
app-metrics/collectd:contrib - Install user-contributed files in the doc directory
app-metrics/collectd:filecaps - When set collectd daemon will have set required capabilities to run most plugins even if run as unprivileged user
app-metrics/collectd:java - Must be set (workaround for java-pkg-opt-2 eclass limitation) when you want java or genericjmx plugin
app-metrics/collectd:udev - Enable optional udev usage in disk plugin; Required for smart plugin
app-metrics/collectd:xfs - Enable optional capability to filter on XFS file system in df plugin; Requires XFS headers from sys-fs/xfsprogs
app-metrics/node_exporter:systemd - Enables systemd collector by default
app-metrics/prometheus-podman-exporter:btrfs - Collect metrics for btrfs filesystem
app-misc/FreeSSM:small-resolution - Build the app for small resolution screeens
app-misc/anki:gui - Enable support for a graphical user interface. Disable for standalone sync server.
app-misc/blink1:mini-tool - Build and install command-line mini-tool blink1-mini-tool (normally used for embedded devices)
app-misc/blink1:server - Build and install REST API server (currently hard-coded to TCP port 8080)
app-misc/blink1:tool - Build and install command-line tool blink1-tool
app-misc/broot:X - X11 clipboard interaction
app-misc/byobu:screen - Use app-misc/screen as the default backend
app-misc/ca-certificates:cacert - Include root/class3 certs from CAcert (https://www.cacert.org/)
app-misc/carbon-c-relay:client - build and install sendmetric client utility
app-misc/carbon-c-relay:lz4 - add support for LZ4 compressed transport
app-misc/carbon-c-relay:oniguruma - use dev-libs/oniguruma as regex implementation
app-misc/carbon-c-relay:pcre2 - use dev-libs/libpcre2 as regex implementation
app-misc/carbon-c-relay:snappy - add support for Snappy compressed transport
app-misc/ddccontrol:pci - enable direct PCI memory access (the setuid ddcpci util)
app-misc/ddcutil:drm - Use x11-libs/libdrm for more verbose diagnostics.
app-misc/ddcutil:usb-monitor - Adds support for monitors attached via USB.
app-misc/ddcutil:user-permissions - Adds a udev rules to allow non-root users in the i2c group to access the /dev/i2c-* devices. If usb-monitor is selected, users will need to be added to the video group to access the USB monitor. Otherwise, only root will be able to use ddcutil.
app-misc/digitemp:ds2490 - Build support for the ds2490 sensor
app-misc/digitemp:ds9097 - Build support for the ds9097 sensor
app-misc/digitemp:ds9097u - Build support for the ds9097u sensor
app-misc/ebusd:contrib - Compile and install additional user contribued plugins.
app-misc/ebusd:knx - Enable support for connecting to KNX.
app-misc/ebusd:mqtt - Enable support for connecting to MQTT.
app-misc/fastfetch:chafa - Enables text/graphics renderer with media-gfx/chafa
app-misc/fastfetch:ddcutil - Use app-misc/ddcutil to query monitor settings
app-misc/fastfetch:drm - Enables support for X.org's x11-libs/libdrm
app-misc/fastfetch:elf - Use libelf to extract strings from binaries
app-misc/fastfetch:osmesa - Enables offscreen rendering support from media-libs/mesa
app-misc/fastfetch:vulkan - Enables reading GPU via media-libs/vulkan-loader
app-misc/fastfetch:xfce - Enables support for XFCE config
app-misc/fastfetch:xrandr - Enables support for Xrandr
app-misc/g810-led:hidapi - Use dev-libs/hidapi instead of virtual/libusb for talking to the device (advertised to be faster)
app-misc/geoclue:modemmanager - Enable geolocation through 3G or GPS enabled hardware through net-misc/modemmanager.
app-misc/geoclue:zeroconf - Enable retrieval of GPS location from Android devices with https://wiki.gnome.org/Apps/GeoclueShare
app-misc/gramps:geo - Enable rendering of geographical data using sci-geosciences/osm-gps-map
app-misc/gramps:rcs - Adds support for family tree archives via dev-vcs/rcs
app-misc/gramps:reports - All external software that is needed for graphical reports will be installed
app-misc/graphlcd-base:fontconfig - Add support for media-libs/fontconfig font names.
app-misc/graphlcd-base:freetype - Add support for media-libs/freetype.
app-misc/graphlcd-base:graphicsmagick - Add support for media-gfx/graphicsmagick.
app-misc/graphlcd-base:imagemagick - Add support for media-gfx/imagemagick.
app-misc/irtrans-irserver:mono - Enable mono support
app-misc/jdupes:dedupe - Enable deduplication support
app-misc/jp:jpp - Install jpp which is an extended superset of the jp CLI for JMESPath
app-misc/jpipe:jp-symlink - Install a jp symlink that points to jpipe.
app-misc/jpipe:jpp-symlink - Install a jpp symlink that points to jpipe.
app-misc/jq:oniguruma - Use dev-libs/oniguruma for regular expression support
app-misc/kryoflux-dtc:demos - Install example floppy game files.
app-misc/kryoflux-dtc:fast-firmware - Install fast firmware instead of slow firmware.
app-misc/lcd4linux:apm - Enable the APM plugin.
app-misc/lcd4linux:asterisk - Enable the Asterisk plugin.
app-misc/lcd4linux:button-exec - Enable the Button plugin, to execute something on keypress.
app-misc/lcd4linux:cpuinfo - Enable the cpuinfo plugin.
app-misc/lcd4linux:dbus - Enable the dbus plugin.
app-misc/lcd4linux:diskstats - Enable the diskstats plugin.
app-misc/lcd4linux:dvb - Enable support for the DVB plugin.
app-misc/lcd4linux:event - Enable the event plugin.
app-misc/lcd4linux:exec - Enable the exec plugin, to read output from external programs.
app-misc/lcd4linux:fifo - Enable the FIFO (First-In, First-Out) plugin.
app-misc/lcd4linux:file - Enable the file plugin, to read from input from files.
app-misc/lcd4linux:gps - Enable the gps plugin, for reading gps coordinates.
app-misc/lcd4linux:hddtemp - Enable the hddtemp plugin, to read from the hddtemp daemon.
app-misc/lcd4linux:huawei - Enable the huawei plugin, to read from a huawei device.
app-misc/lcd4linux:i2c-sensors - Enable the i2c_sensors plugin, to read sensor data.
app-misc/lcd4linux:iconv - Enable the iconv plugin, to convert between encodings.
app-misc/lcd4linux:isdn - Enable the isdn plugin, to get information about ISDN.
app-misc/lcd4linux:kvv - Enable the kvv plugin, to get realtime train schedule from the Karlsruher Verkehrsverbund.
app-misc/lcd4linux:loadavg - Enable the loadavg plugin, to get stats load
app-misc/lcd4linux:meminfo - Enable the meminfo plugin, to get memory statistics.
app-misc/lcd4linux:mpd - Enable the mpd plugin, to read from the Music Player Daemon.
app-misc/lcd4linux:mpris-dbus - Enable the mpris plugin, to read data via dbus for mpris.
app-misc/lcd4linux:mysql - Enable the mysql plugin, to get mysql database information.
app-misc/lcd4linux:netdev - Enable the netdev plugin, to get interface statistics.
app-misc/lcd4linux:netinfo - Enable the netinfo plugin, to get more interface statistic.
app-misc/lcd4linux:outb - Enable raw i/o access.
app-misc/lcd4linux:pop3 - Enable the pop3 plugin, to get notified about new mails.
app-misc/lcd4linux:proc-stat - Enable the proc_stat plugin, to read data from the proc file system.
app-misc/lcd4linux:python - Enable support for dev-lang/python and enable the python plugin, to execute own python scripts.
app-misc/lcd4linux:qnaplog - Enable the qnaplog plugin, to read a log from a QNAP device.
app-misc/lcd4linux:raspi - Enable the raspi plugin, to read sensor data from a Raspberry Pi.
app-misc/lcd4linux:sample - Enable the sample plugin.
app-misc/lcd4linux:statfs - Enable the statfs plugin, to get statistics about the file system.
app-misc/lcd4linux:uname - Enable the uname plugin, to get the output of uname.
app-misc/lcd4linux:uptime - Enable the uptime plugin.
app-misc/lcd4linux:w1retap - Enable the w1retap plugin.
app-misc/lcd4linux:wireless - Enable the wireless plugin, to get wireless statistics.
app-misc/lcdproc:ethlcd - Enable support for ethlcd in the hd44780 driver.
app-misc/lcdproc:extra-charmaps - Enable extra language specific charmaps.
app-misc/lcdproc:menu - Enable menu support in the lcdproc client.
app-misc/lcdproc:nfs - Display NFS filesystem stats in the lcdproc client.
app-misc/lcdproc:png - Enable support for media-libs/libpng in the glcd driver.
app-misc/lcdproc:samba - Display SMBFS filesystem stats in the lcdproc client.
app-misc/lcdproc:test-menu - Enable test menu support for the lcdproc server.
app-misc/lcdproc:truetype - Enable support for media-libs/freetype in the glcd driver.
app-misc/libdatovka:openssl - Use openssl backend
app-misc/lirc:audio - Support using an audio device connected to an IR receiver
app-misc/lirc:devinput - Support the devinput input device
app-misc/lirc:ftdi - Support FTDI devices
app-misc/lirc:gtk - Include GTK support which enables the use of lirc-setup
app-misc/lirc:inputlirc - Add a dependency on app-misc/inputlircd
app-misc/lirc:uinput - Enable support for uinput
app-misc/mc:edit - Compile and install the mcedit application
app-misc/mc:sftp - Add support for sftp (uses net-libs/libssh2 for it).
app-misc/mc:slang - Use sys-libs/slang instead of sys-libs/ncurses.
app-misc/mime-types:nginx - Enable mime-types support for www-servers/nginx package
app-misc/mosquitto:bridge - Enable bridge support in the MQTT broker.
app-misc/mosquitto:persistence - Store messages and subscriptions to a file.
app-misc/mosquitto:srv - Include SRV lookup support.
app-misc/mosquitto:websockets - Support the WebSocket protocol.
app-misc/muttprint:doc - Builds documentation
app-misc/neofetch:X - Enable support for detecting DEs, WMs, screen resolutions, and showing images from an X terminal
app-misc/nnn:8contexts - Enable 8 contexts (instead of 4)
app-misc/nnn:colemak - Key bindings for Colemak keyboard layout
app-misc/nnn:emoji - Display icons using emoji
app-misc/nnn:gitstatus - Add git status column to the detail view
app-misc/nnn:icons - Display icons using icons-in-terminal
app-misc/nnn:namefirst - Print filenames first in the detail view
app-misc/nnn:nerdfonts - Display icons using nerdfonts icons
app-misc/nnn:qsort - Use Alexey Tourbin's quick sort implementation
app-misc/nnn:restorepreview - Add pipe to close and restore preview-tui for internal undetached edits
app-misc/note:general - Add support for ascii flatfile backend
app-misc/note:text - Add support for text backend
app-misc/ola:ftdi - Support FTDI devices
app-misc/ola:http - Enable built-in Web UI
app-misc/ola:rdm-tests - Install RDM responder tests
app-misc/pax-utils:python - Install a more powerful/faster version of lddtree
app-misc/recoll:camelcase - Enable indexing for camelCase sentences and words
app-misc/recoll:chm - Enable CHM file support via dev-python/pychm
app-misc/recoll:inotify - Use the Linux Kernel notification subsystem for monitoring file alterations in realtime
app-misc/recoll:session - Stop monitoring file alterations when X11 session terminates
app-misc/recoll:webengine - Use dev-qt/qtwebengine for fancy result list display
app-misc/rlwrap:debug - Enable debug
app-misc/screen:multiuser - Enable multiuser support (by setting correct permissions)
app-misc/screen:nethack - Express error messages in nethack style
app-misc/screenfetch:X - Use the media-gfx/scrot package to take screenshots
app-misc/sphinx:id64 - use 64-bit document and word IDs
app-misc/sphinx:mariadb - Add mariadb database support
app-misc/sphinx:stemmer - Enable language stemming support
app-misc/task:sync - Enable "task sync" support
app-misc/tmux:utempter - Include libutempter support
app-misc/tracker:miners - Install the app-misc/tracker-miners package for actual data mining support for tracker
app-misc/tracker:stemmer - Add word stemming via dev-libs/snowball-stemmer.
app-misc/tracker-miners:cue - Enable cue sheet parsing
app-misc/tracker-miners:gsf - Enable gnome-extra/libgsf based data extractor and for ODT.
app-misc/tracker-miners:iptc - Enable extraction of IPTC data from pictures
app-misc/tracker-miners:iso - Enable extraction of metadata from ISO disk images
app-misc/tracker-miners:playlist - Add support for playlists
app-misc/tracker-miners:xps - Add support for XPS file format through app-text/libgxps.
app-misc/unfoo:minimal - Do not install all support archive binaries
app-misc/vcontrold:vclient - Build the vclient helper program to talk to vcontrold
app-misc/vcontrold:vsim - Build the vsim helper program (simulates the heating's answers, for development and debugging)
app-misc/vifm:extended-keys - Support for extended keys (arrows, home etc)
app-misc/vifm:gtk - Use gtk+ to determine mimetypes
app-misc/vifm:vim - Install the vifm vim plugin and vim-compatible documentation
app-misc/worker:avfs - Enable support for sys-fs/avfs
app-misc/yq:yq-symlink - Create a yq symlink to yq-python.
app-misc/yq-go:yq-symlink - Create a yq symlink to yq-go.
app-mobilephone/gammu:curl - Enables curl support
app-mobilephone/gammu:irda - Enables infrared support
app-mobilephone/gammu:mysql - Use mysql for data storage
app-mobilephone/gammu:nls - Enable native language support
app-mobilephone/gammu:odbc - Use ODBC as DB connector
app-mobilephone/gammu:postgres - Use PostgreSQL for data storage
app-mobilephone/gammu:usb - Enable USB suport
app-mobilephone/gnokii:ical - Enable support for dev-libs/libical
app-mobilephone/gnokii:irda - Enable infrared support
app-mobilephone/gnokii:pcsc-lite - Enable smartcard support with sys-apps/pcsc-lite
app-mobilephone/gnokii:sms - Enable SMS support (build smsd)
app-mobilephone/smstools:stats - Enable statistic reporting
app-office/abiword:collab - Enable collaborative editing plugin
app-office/abiword:goffice - Enable goffice plugin
app-office/abiword:grammar - Enable grammar checking via dev-libs/link-grammar
app-office/abiword:map - Enable world map support through media-libs/libchamplain
app-office/abiword:math - Enable support for x11-libs/gtkmathview
app-office/abiword:ots - Enable Text Summarizer plugin
app-office/abiword:plugins - Enable plugins build (see http://www.abisource.com/wiki/PluginMatrix for more information). If your file cannot be opened due lack of support, try enabling this.
app-office/abiword:redland - Enables support redland and raptor libs.
app-office/abiword:thesaurus - Enable thesaurus support
app-office/abiword:wordperfect - Enable wordperfect file support via app-text/libwpd
app-office/calcurse:caldav - Support CalDAV
app-office/calligra:charts - Build chartshape plugin for creating business charts with dev-libs/kdiagram
app-office/calligra:import-filter - Enable support for various import filter file formats like WordPerfect, Visio and Apple Keynote
app-office/calligra:lcms - Build colorengine plugins using media-libs/lcms
app-office/calligra:okular - Enable bindings for kde-apps/okular
app-office/calligra:phonon - Build stage/eventplugins and videoshape plugin using media-libs/phonon
app-office/calligra:webengine - Enable Braindump support using dev-qt/qtwebengine
app-office/calligraplan:activities - Enable kactivities support
app-office/calligraplan:holidays - Enable kde-frameworks/kholidays integration
app-office/calligraplan:kwallet - Enable access to encrypted OpenDocument files with kde-frameworks/kwallet storage
app-office/glabels:barcode - Enable barcode support through external libraries.
app-office/gnucash:aqbanking - Connect to some internet banks via AqBanking
app-office/gnucash:quotes - Enable online stock quote retrieval
app-office/gnumeric:libgda - Enable database support through gnome-extra/libgda.
app-office/gnumeric:perl - Enable perl plugin loader.
app-office/grisbi:goffice - enable goffice graphic support
app-office/kmymoney:activities - Enable kde-plasma/plasma-activities integration
app-office/kmymoney:addressbook - Enable kde-apps/akonadi contact integration
app-office/kmymoney:hbci - Enable HBCI support using net-libs/aqbanking
app-office/kmymoney:holidays - Enable kde-frameworks/kholidays integration
app-office/kraft:pim - Enable support for KDE PIM resources integration
app-office/libalkimia:webengine - Enable online quotes using dev-qt/qtwebengine
app-office/libreoffice:base - Enable full support for LibreOffice Base databases (involves additional bundled libs)
app-office/libreoffice:clang - Use Clang compiler instead of GCC
app-office/libreoffice:coinmp - Use sci-libs/coinor-mp as alternative solver
app-office/libreoffice:googledrive - Enable support for remote files on Google Drive
app-office/libreoffice:mariadb - Prefer mariadb connector over mysql connector
app-office/libreoffice:odk - Build the Office Development Kit
app-office/libreoffice:pdfimport - Enable PDF import via the Poppler library
app-office/libreoffice:vulkan - Enable Vulkan usage via the skia library (clang recommended)
app-office/libreoffice-l10n:offlinehelp - Install help files locally instead of using the LibreOffice Wiki
app-office/lyx:aspell - Add support for aspell spellchecking
app-office/lyx:dia - Add support for diagrams (app-office/dia)
app-office/lyx:dot - Add support for DOT import (media-gfx/graphviz)
app-office/lyx:enchant - Add support for enchant spellchecking wrapper (both aspell and hunspell can be used by LyX).
app-office/lyx:gnumeric - Add support for importing Gnumeric/OpenOffice/MS Excel spreadsheets into LyX.
app-office/lyx:html - Add support for HTML import
app-office/lyx:hunspell - Add support for spellchecking based on hunspell and reuse system-wide OpenOffice dictionaries. This also enable thesaurus dictionaries not accessible via aspell.
app-office/lyx:monolithic-build - This should speed up compilation significantly when you have enough RAM (> 600 MB)
app-office/lyx:rcs - Add support for revision control via dev-vcs/rcs
app-office/lyx:rtf - Add support for RTF import/export packages
app-office/magicpoint:contrib - Install additional contributed scripts
app-office/mdbtools:glib - Use functions provided by dev-libs/glib, not built-in
app-office/planner:libgda - PostgreSQL support via gnome-extra/libgda
app-office/sc-im:X - Use x11-misc/xclip for clipboard copy/paste
app-office/sc-im:ods - Add ods import support
app-office/sc-im:plots - Add sci-visualization/gnuplot for plotting support
app-office/sc-im:tmux - Use app-misc/tmux for clipboard copy/paste
app-office/sc-im:wayland - Use gui-apps/wl-clipboard for clipboard copy/paste
app-office/sc-im:xls - Add xls support
app-office/sc-im:xlsx - Add xlsx support
app-office/scribus:boost - Enable support for Boost based enhancement
app-office/scribus:hunspell - Enable support for spell checking with app-text/hunspell
app-office/scribus:minimal - Don't install headers (only required for e.g. plug-in developers)
app-office/scribus:osg - 3D rendering via dev-games/openscenegraph
app-office/scribus:scripts - Install the scripts
app-office/scribus:templates - Document templates
app-office/scribus:tk - Install tk based scripts e.g. FontSample.py
app-office/skrooge:activities - Enable kactivities support
app-office/texmacs:netpbm - Add support for media-libs/netpbm
app-office/texstudio:video - Enable video player in pdf files
app-pda/gtkpod:clutter - Enable clutter support for displaying coverart
app-portage/conf-update:colordiff - Use colors when displaying diffs (app-misc/colordiff)
app-portage/eix:debug - Build with upstream's CXXFLAGS/LDFLAGS for debugging support; not recommended for normal use.
app-portage/eix:doc - Create description of the eix cache file additionally in html format
app-portage/eix:sqlite - Compile in support for portage's sqlite backend; to actually use it you need additional configuration of portage and eix
app-portage/gemato:gpg - Install dependencies needed for OpenPGP signature verification support
app-portage/gemato:pretty-log - Pull dev-python/rich to enable pretty logs
app-portage/gemato:tools - Install additional utilities (benchmarks, hash testing tools, fast Manifest generators) to /usr/share/gemato.
app-portage/grs:server - Install all the tools building systems
app-portage/hackport:profile - Enable profiling flags
app-portage/kuroneko:scraper - Include the dependencies necessary for Bugzilla scraping.
app-portage/nattka:depgraph-order - Process packages in depgraph order whenever possible.
app-portage/pfl:network-cron - Adds a cron job which does a weekly submit of the package database
app-portage/portage-utils:qmanifest - Build qmanifest applet, this adds additional dependencies for GPG, OpenSSL and BLAKE2B hashing
app-portage/portage-utils:qtegrity - Build qtegrity applet, this adds additional dependencies for OpenSSL
app-portage/tatt:templates - Install template scripts to be used with tatt
app-shells/atuin:client - Enable the autin client
app-shells/atuin:daemon - Enable the autin background daemon on the client
app-shells/atuin:server - Enable the autin server
app-shells/atuin:sync - Enable the server-sync feature in the autin client
app-shells/autojump:ipython - Add support for dev-python/ipython
app-shells/bash:bashlogger - Log ALL commands typed into bash; should ONLY be used in restricted environments such as honeypots
app-shells/bash:mem-scramble - Build with custom malloc/free overwriting allocated/freed memory
app-shells/bash:net - Enable /dev/tcp/host/port redirection
app-shells/bash:pgo - Optimize the build using Profile Guided Optimization (PGO)
app-shells/bash:plugins - Add support for loading builtins at runtime via 'enable'
app-shells/bash-completion:eselect - Support blacklisting of completions via 'eselect bashcomp'. This enables custom Gentoo patching of upstream completion loader.
app-shells/mksh:lksh - variant that uses POSIX-compliant arithmetics with the host “long” data type and is automatically in POSIX mode when called as /bin/sh
app-shells/nushell:plugins - Build official plugins
app-shells/pdsh:rsh - This allows the use of rsh (remote shell) and rcp (remote copy) for authoring websites. sftp is a much more secure protocol and is preferred.
app-shells/shish:diet - Use dev-libs/dietlibc
app-text/atril:caja - Enable property page extension in mate-base/caja
app-text/atril:dvi - Enable build-in DVI viewer
app-text/atril:epub - Enable build-in DVI viewer using net-libs/webkit-gtk
app-text/atril:synctex - Enable search highlighting through synctex (virtual/tex-base)
app-text/atril:t1lib - Enable the Type-1 fonts for the build-in DVI viewer (media-libs/t1lib)
app-text/atril:xps - Enable XPS viewer using app-text/libgxps
app-text/blogc:git - Build blogc-git-receiver tool
app-text/blogc:httpd - Build blogc-runserver tool
app-text/blogc:make - Build blogc-make tool
app-text/calibre:font-subsetting - Enable font subsetting support
app-text/calibre:system-mathjax - Use a system copy of mathjax
app-text/calibre:unrar - Enable support for comic books compressed with the non-free Rar format
app-text/cmigemo:vim - Install Vim plugin for C/Migemo
app-text/crengine-ng:chm - Support chm format
app-text/crengine-ng:fribidi - Support bidirectional text by dev-libs/fribidi
app-text/crengine-ng:harfbuzz - Use media-libs/harfbuzz for kerning and ligatures
app-text/crengine-ng:libunibreak - Use dev-libs/libunibreak for hyphenation
app-text/crengine-ng:libutf8proc - Use dev-libs/libutf8proc for manipulating unicode strings
app-text/crm114:mew - Add support for using the mewdecode mime decoder (app-emacs/mew)
app-text/crm114:normalizemime - Add support for using the normalizemime (mail-filter/normalizemime)
app-text/crqt-ng:chm - Support chm format
app-text/crqt-ng:fribidi - Support bidirectional text by dev-libs/fribidi
app-text/crqt-ng:harfbuzz - Use media-libs/harfbuzz for kerning and ligatures
app-text/crqt-ng:libunibreak - Use dev-libs/libunibreak for hyphenation
app-text/crqt-ng:libutf8proc - Use dev-libs/libutf8proc for manipulating unicode strings
app-text/crwx-ng:chm - Support chm format
app-text/crwx-ng:fribidi - Support bidirectional text by dev-libs/fribidi
app-text/crwx-ng:harfbuzz - Use media-libs/harfbuzz for kerning and ligatures
app-text/crwx-ng:libunibreak - Use dev-libs/libunibreak for hyphenation
app-text/crwx-ng:libutf8proc - Use dev-libs/libutf8proc for manipulating unicode strings
app-text/dblatex:inkscape - Use inkscape to convert SVG. Disable to use gnome-base/librsvg instead.
app-text/dictd:judy - Build Judy-based (dev-libs/judy) plugin implementing fast "exact" and especially "lev" strategies
app-text/dictd:minimal - Don't build server but dict client, dictzip and dictfmt only.
app-text/docbook-sgml-utils:jadetex - Add support for processing tex files produced by the TeX backend of Jade
app-text/docbook-xsl-ns-stylesheets:ruby - Install the Ruby-based dbtoepub script; requires an interpreter compatible with app-eselect/eselect-ruby.
app-text/docbook-xsl-stylesheets:ruby - Install the Ruby-based dbtoepub script; requires an interpreter compatible with app-eselect/eselect-ruby.
app-text/doxygen:clang - support for sys-devel/clang assisted parsing
app-text/doxygen:dot - allow to create dot graphs using media-gfx/graphviz
app-text/doxygen:doxysearch - build doxyindexer and doxysearch.cgi
app-text/ebook-tools:lit2epub - Install lit2epub script
app-text/editorconfig-core-c:cli - Install command line interface.
app-text/enchant:aspell - Adds support for app-text/aspell spell checker
app-text/enchant:hunspell - Adds support for app-text/hunspell spell checker
app-text/enchant:nuspell - Adds support for app-text/nuspell spell checker
app-text/enchant:voikko - Adds support for dev-libs/libvoikko spell checker
app-text/evince:dvi - Enable the built-in DVI viewer
app-text/evince:nautilus - Enable property page extension in gnome-base/nautilus
app-text/evince:postscript - Enable support for PostScript and Adobe Illustrator documents with app-text/libspectre
app-text/evince:spell - Enable inline spell check for annotations via app-text/gspell
app-text/evince:xps - Enable XPS viewer using app-text/libgxps
app-text/feathernotes:X - Link application against X11 libraries which adds support for virtual desktop awareness and tab DND
app-text/ghostscript-gpl:unicode - Add support for unicode passwords via net-dns/libidn
app-text/groonga:abort - Enable query abortion
app-text/groonga:benchmark - Build benchmark programs
app-text/groonga:dynamic-malloc-change - Allow dynamic memory allocation change for testing
app-text/groonga:exact-alloc-count - Atomic counting for memory alloc count
app-text/groonga:fmalloc - Make memory allocation failed in specified condition for debug
app-text/groonga:futex - Use futex
app-text/groonga:libevent - Enable dev-libs/libevent used for suggestion
app-text/groonga:mecab - Use app-text/mecab for morphological analysis
app-text/groonga:msgpack - Enable dev-libs/msgpack used for suggestion
app-text/groonga:nfkc - Use nfkc based utf8 normalization
app-text/groonga:sphinx - Enable document generation by app-misc/sphinx
app-text/groonga:uyield - Build for detecting race conditions
app-text/groonga:zeromq - Enable net-libs/zeromq used for suggestion
app-text/htmltidy:deprecated - Install tools and header files which are now considered deprecated
app-text/hyperestraier:mecab - Enable app-text/mecab support for Estraier
app-text/kbibtex:webengine - Use dev-qt/qtwebengine for HTML previews
app-text/lcdf-typetools:kpathsea - Enable integration with kpathsea search library (TeX related)
app-text/libebook:tools - Build file conversion tools
app-text/libgepub:webkit - Build with GepubWidget based on Webkit
app-text/libmwaw:tools - Build file conversion tools
app-text/libqxp:tools - Build file conversion tools
app-text/libstaroffice:tools - Build conversion tools
app-text/libstaroffice:zlib - Enable support for compressed data
app-text/libwpd:tools - Build file conversion tools
app-text/libwps:tools - Build file conversion tools
app-text/mandoc:cgi - build man.cgi web plugin for viewing man pages
app-text/mandoc:system-man - set as the default man provider
app-text/mathtex:png - Generate png images by default instead of gif
app-text/msort:heap - Use heap instead of alloca()
app-text/msort:icu - Use dev-libs/icu instead of dev-libs/libutf8proc.
app-text/msort:libuninum - Use dev-libs/libuninum for conversion.
app-text/mupdf:archive - Enable support for CBR and other archive formats using libarchive
app-text/pandoc:embed-data-files - Embed data files in binary for relocatable executable.
app-text/pandoc:trypandoc - Build trypandoc cgi executable.
app-text/pandoc-bin:pandoc-symlink - Install pandoc symlink that points to pandoc-bin
app-text/pandoc-cli:lua - Support custom modifications and conversions with the pandoc Lua scripting engine.
app-text/pandoc-cli:nightly - Add '-nightly-COMPILEDATE' to the output of '--version'.
app-text/pandoc-cli:server - Include support for running pandoc as an HTTP server.
app-text/pdfgrep:unac - Removing accents and ligatures before search
app-text/pdfjam:extra - Install unsupported wrapper scripts, for example pdf90, pdfnup, pdfjoin
app-text/pdfpc:gstreamer - Compile support for movie playback (media-libs/gstreamer)
app-text/pdfpc:soup - Compile support for REST server (net-libs/libsoup)
app-text/pdfpc:webkit - Enable viewing Markdown notes (net-libs/webkit-gtk)
app-text/pelican:markdown - Markdown support
app-text/podofo:boost - Add support for boost
app-text/podofo:tools - Build and install commandline tools.
app-text/poppler:boost - Use boost::small_vector for a serious performance gain
app-text/poppler:gpgme - Enable signatures handling with app-crypt/gpgme
app-text/poppler:nss - Enable signatures handling with dev-libs/nss
app-text/poppler:utils - Install command-line PDF converters and various utilities.
app-text/qpdfview:fitz - Use experimental fitz rendering, provided by app-text/mupdf, instead of poppler
app-text/qpdfview:synctex - Add support for searching TeX sources
app-text/robodoc:examples - Installs usage examples in /usr/share for Perl
app-text/sdcv:darkterm - Improve readability of color output on terminals with dark background.
app-text/sigil:plugins - Installed needed Python packages for using Sigil plugins
app-text/sigil:system-mathjax - Use the system-wide dev-libs/mathjax instead of bundled
app-text/sword:clucene - Use dev-cpp/clucene for lucene search support
app-text/tessdata_best:osd - Enable support orientation and script detection.
app-text/tessdata_fast:osd - Enable support orientation and script detection.
app-text/tessdata_legacy:math - Enable support for recognition of equations.
app-text/tessdata_legacy:osd - Enable support orientation and script detection.
app-text/tesseract:float32 - Support float for model training and text recognition (faster, requires less RAM)
app-text/tesseract:training - Install training applications to add support for new languages.
app-text/texlive:context - Add support for the ConTeXt format (dev-texlive/texlive-context)
app-text/texlive:extra - Add support for extra TeXLive packages
app-text/texlive:games - Add typesetting support for games (chess, etc.) (dev-texlive/texlive-games)
app-text/texlive:graphics - Add support for several graphics packages (pgf, tikz,...)
app-text/texlive:humanities - Add LaTeX support for the humanities (dev-texlive/texlive-humanities)
app-text/texlive:luatex - Install TeX Live packages that require luatex
app-text/texlive:metapost - Add support for metapost: A tool for creating graphics in scalable PostScript
app-text/texlive:music - Add support for music typesetting (dev-texlive/texlive-music)
app-text/texlive:pdfannotextractor - Add dev-tex/pdfannotextractor support, for extracting annotations from PDF files
app-text/texlive:pstricks - Add pstricks packages (dev-texlive/texlive-pstricks)
app-text/texlive:publishers - Add support for publishers (dev-texlive/texlive-publishers)
app-text/texlive:science - Add typesetting support for natural and computer sciences (dev-texlive/texlive-mathscience)
app-text/texlive:tex4ht - Add support for dev-tex/tex4ht (for converting (La)TeX to (X)HTML, XML and OO.org)
app-text/texlive:texi2html - Add support for app-text/texi2html which converts texi files to HTML
app-text/texlive:xetex - Add support for XeTeX macros (dev-texlive/texlive-xetex)
app-text/texlive-core:luajittex - Add support for LuaJitTeX: LuaTeX based on LuaJIT which is usually faster.
app-text/texlive-core:xetex - Add support for XeTeX: a TeX system with Unicode and modern font technologies.
app-text/texlive-core:xindy - Add support for Xindy: A general-purpose index processor.
app-text/wdiff:experimental - Build experimental utilities (mdiff, unify, wdiff2)
app-text/webgen:builder - Enable programmatic HTML/XML generation
app-text/webgen:highlight - Enable syntax highlighting for certain plugins
app-text/webgen:markdown - Markdown support
app-text/writerperfect:abiword - Add support for abiword format using app-text/libabw
app-text/writerperfect:ebook - Add support for various ebook formats using app-text/libebook
app-text/writerperfect:epub - Add support for conversion to ePub format using app-text/libepubgen
app-text/writerperfect:freehand - Add support for freehand format using media-libs/libfreehand
app-text/writerperfect:gsf - Add support for structured files using gnome-extra/libgsf
app-text/writerperfect:keynote - Add support for keynote format using app-text/libetonyek
app-text/writerperfect:mspub - Add support to mspub format using app-text/libmspub
app-text/writerperfect:mwaw - Add support to mwaw formats using app-text/libmwaw
app-text/writerperfect:pagemaker - Add support to pagemaker formats using media-libs/libpagemaker
app-text/writerperfect:qxp - Add support for QuarkXpress documents using app-text/libqxp
app-text/writerperfect:visio - Add support for visio format using media-libs/libvisio
app-text/writerperfect:wpd - Add support for wpd format using app-text/libwpd
app-text/writerperfect:wpg - Add support for wpg format using app-text/libwpg
app-text/writerperfect:wps - Add support for wps format using app-text/libwps
app-text/writerperfect:zmf - Add support for Zoner Callisto/Draw documents format using media-libs/libzmf
app-text/wv:tools - Install optional utilities considered deprecated in favor of using AbiWord.
app-text/xmlto:text - Support conversion from XML to plain text
app-text/xpdf:cmyk - Include support for CMYK rasterization
app-text/xpdf:i18n - Enable support non-UTF8 national charsets
app-text/xpdf:icons - Generate desktop PNG icons using rsvg-convert from gnome-base/librsvg
app-text/xpdf:libpaper - Use app-text/libpaper to get paper preferences
app-text/xpdf:metric - Use A4 instead of US Letter paper size by default for PostScript output. This option has effect only if libpaper USE flag is disabled
app-text/xpdf:opi - Include support for OPI (Open Prepress Interface) comments
app-text/xpdf:textselect - Allow text selection
app-text/xpdf:utils - Install command-line PDF converters and various utilities
app-text/zathura:synctex - Use libsynctex to get latex codeline from pdf
app-text/zathura-meta:cb - Install plug-in for ComicBook support
app-text/zeal:X - Enable global shortcut support on X11
app-vim/gentoo-syntax:ignore-glep31 - Remove GLEP 31 (UTF-8 file encodings) settings
app-xemacs/xemacs-packages-all:mule - Add multi-language support to XEmacs
dev-ada/AdaSAT:shared - Build shared library
dev-ada/AdaSAT:static-pic - Build static library with pic code
dev-ada/VSS:shared - Build shared library
dev-ada/VSS:static-pic - Build static library with pic code
dev-ada/aws:shared - Build shared library
dev-ada/aws:wsdl - Used to convert ada to wsdl
dev-ada/gnatcoll-bindings:shared - Build shared library
dev-ada/gnatcoll-bindings:static-pic - Build shared library
dev-ada/gnatcoll-core:shared - Build shared library
dev-ada/gnatcoll-core:static-pic - Build static library with pic code
dev-ada/gnatcoll-db:db2ada - Build gnatcoll_db2ada
dev-ada/gnatcoll-db:gnatinspect - Build gnatinspect
dev-ada/gnatcoll-db:shared - Build shared library
dev-ada/gnatcoll-db:sql - Build sql library
dev-ada/gnatcoll-db:static-pic - Build shared library
dev-ada/gnatcoll-db:xref - Build xref library
dev-ada/gpr:shared - Build shared library
dev-ada/gpr:static-pic - Build static library with pic code
dev-ada/gpr-unit-provider:shared - Build shared library
dev-ada/gpr-unit-provider:static-pic - Build static library with pic code
dev-ada/gtkada:shared - Build gtkada as shared library
dev-ada/gtkada:static-pic - Build static library with pic code
dev-ada/lal-refactor:shared - Build shared library
dev-ada/lal-refactor:static-pic - Build static library with pic code
dev-ada/langkit:shared - Build shared library
dev-ada/langkit:static-pic - Build static library with pic code
dev-ada/libadalang:static-pic - Build static library with pic code
dev-ada/libadalang-tools:shared - Build shared library
dev-ada/libadalang-tools:static-pic - Build static library with pic code
dev-ada/libgpr:shared - Build shared library
dev-ada/libgpr:static-pic - Build static library with pic code
dev-ada/spawn:glib - Add support to dev-libs/glib-based mainloop.
dev-ada/spawn:shared - Build shared library
dev-ada/spawn:static-pic - Build static library with pic code
dev-ada/templates-parser:shared - Build shared library
dev-ada/xmlada:shared - Build shared library
dev-ada/xmlada:static-pic - Build static library with pic code
dev-build/bazelisk:bazel-symlink - Install bazel symlink that points to bazelisk
dev-build/cmake:dap - Build debugger for CMake with Debug Adapter Protocol support via dev-cpp/cppdap
dev-build/muon:archive - Enable extracting wraps using app-arch/libarchive.
dev-build/muon:libpkgconf - Enable looking up packages via dev-util/pkgconf.
dev-cpp/benchmark:exceptions - Enable the use of exceptions in the benchmark library
dev-cpp/benchmark:libcxx - Use sys-libs/libcxx instead of libstdc++ as the default stdlib
dev-cpp/benchmark:libpfm - Enable dev-libs/libpfm support
dev-cpp/benchmark:tools - Install some additional Python tools
dev-cpp/eigen:adolc - Add test support for Adolc (sci-libs/adolc)
dev-cpp/eigen:benchmark - Build benchmark suite
dev-cpp/eigen:boost - Add test support for Boost.Multiprecision (dev-libs/boost)
dev-cpp/eigen:cholmod - Add test support for CHOLMOD (sci-libs/cholmod)
dev-cpp/eigen:clang - Use clang for cuda units compilation
dev-cpp/eigen:fftw - Add test support for fftw (sci-libs/fftw)
dev-cpp/eigen:hip - Enable HIP GPU computing support
dev-cpp/eigen:klu - Add test support for KLU (sci-libs/klu)
dev-cpp/eigen:mathjax - Use MathJax for rendering math in HTML docs (dev-libs/mathjax)
dev-cpp/eigen:opengl - Add test support for OpenGL
dev-cpp/eigen:openmp - Add test support for the OpenMP (support parallel computing)
dev-cpp/eigen:pastix - Add test support for PaStiX (sci-libs/pastix)
dev-cpp/eigen:sparsehash - Add test support for GoogleHash (dev-cpp/sparsehash)
dev-cpp/eigen:spqr - Add test support for SPQR (sci-libs/spqr)
dev-cpp/eigen:superlu - Add test support for SuperLU (sci-libs/superlu)
dev-cpp/eigen:umfpack - Add test support for UMFPACK (sci-libs/umfpack)
dev-cpp/glog:gflags - Use dev-cpp/gflags for flag parsing
dev-cpp/glog:libunwind - Use libunwind library (sys-libs/libunwind or sys-libs/llvm-libunwind) instead of built-in fallback implementation for stack unwinding
dev-cpp/gtest:abseil - Build with functionality provided by dev-cpp/abseil-cpp and dev-libs/re2
dev-cpp/jwt-cpp:picojson - Enable use of dev-cpp/picojson
dev-cpp/libcmis:tools - Build client tool for testing and viewing features
dev-cpp/libjson-rpc-cpp:http-client - Build support for HTTP client using net-misc/curl
dev-cpp/libjson-rpc-cpp:http-server - Build support for HTTP server using net-libs/libmicrohttpd
dev-cpp/libjson-rpc-cpp:redis-client - Build support for Redis client using dev-libs/hiredis
dev-cpp/libjson-rpc-cpp:redis-server - Build support for Redis server using dev-libs/hiredis
dev-cpp/libjson-rpc-cpp:stubgen - Build header stub code generator (needed for development and when pregenerated headers are not bundled)
dev-cpp/msgpack-cxx:boost - Enable boost support
dev-cpp/opentelemetry-cpp:jaeger - Include the jaeger exporter
dev-cpp/opentelemetry-cpp:prometheus - include the Prometheus Client in the SDK
dev-cpp/sdbus-c++:systemd - Use external libsystemd instead of statically-linked build
dev-cpp/sdbus-c++:tools - Install interface stub code generator
dev-db/etcd:server - Installs etcd daemon
dev-db/firebird:server - Install the server components of Firebird, not just the client
dev-db/firebird:xinetd - Install ClassicServer
dev-db/mariadb:backup - Build mariadb-backup which supports SST and hot backup of InnoDB, Aria and MyISAM including compression and encryption
dev-db/mariadb:columnstore - Build the ColumnStore storage engine
dev-db/mariadb:extraengine - Add support for alternative storage engines (Archive, CSV, Blackhole, Federated(X), Partition)
dev-db/mariadb:galera - Enables galera replication
dev-db/mariadb:innodb-lz4 - Enables lz4 compression methods for InnoDB/XtraDB
dev-db/mariadb:innodb-lzo - Enables lzo compression methods for InnoDB/XtraDB
dev-db/mariadb:innodb-snappy - Enables snappy compression methods for InnoDB/XtraDB using app-arch/snappy
dev-db/mariadb:jdbc - Enable the CONNECT engine to access foreign databases via JDBC
dev-db/mariadb:latin1 - Use LATIN1 encoding instead of UTF8
dev-db/mariadb:mroonga - Add support for the Mroonga engine for interfacing with the Groonga text search
dev-db/mariadb:numa - Enable NUMA support using sys-process/numactl (NUMA kernel support is also required)
dev-db/mariadb:oqgraph - Add support for the Open Query GRAPH engine
dev-db/mariadb:pam - Enable the optional PAM authentication plugin for the server
dev-db/mariadb:profiling - Add support for statement profiling (requires USE=community).
dev-db/mariadb:rocksdb - Add support for RocksDB; a key/value, LSM database optimized for flash storage
dev-db/mariadb:s3 - Build the S3 storage engine
dev-db/mariadb:server - Build the server program
dev-db/mariadb:sphinx - Add suport for the sphinx full-text search engine
dev-db/mariadb:sst-mariabackup - Add tools needed to support the mariabackup SST method
dev-db/mariadb:sst-rsync - Add tools needed to support the rsync SST method
dev-db/mariadb:systemtap - Build support for profiling and tracing using dev-debug/systemtap
dev-db/mariadb:test - Install upstream testsuites for end use.
dev-db/mariadb:yassl - Enable SSL connections and crypto functions using the bundled yaSSL
dev-db/mongodb:mongosh - Install the MongoDB shell from app-admin/mongosh-bin
dev-db/mongodb:tools - Install the MongoDB tools (mongoimport, mongodump...) from app-admin/mongo-tools
dev-db/mycli:ssh - Add support for connection over SSH tunnel
dev-db/mysql:cjk - Add CJK support for InnoDB fulltext search using app-text/mecab
dev-db/mysql:client-libs - Build the client libraries from the server package instead of the C Connector packages (not recommended)
dev-db/mysql:experimental - Build experimental features aka "rapid" plugins
dev-db/mysql:latin1 - Use LATIN1 encoding instead of UTF8
dev-db/mysql:numa - Enable NUMA support using sys-process/numactl (NUMA kernel support is also required)
dev-db/mysql:profiling - Add support for statement profiling (requires USE=community).
dev-db/mysql:router - Build the MySQL router program
dev-db/mysql:server - Build the server program
dev-db/mysql:systemtap - Build support for profiling and tracing using dev-debug/systemtap
dev-db/mysql:test - Install upstream testsuites for end use.
dev-db/mysql-connector-c++:legacy - Build the legacy 1.x API as well as the DevX API
dev-db/oracle-instantclient:jdbc - Support for XA, Internationalization, and RowSet operations under JDBC
dev-db/oracle-instantclient:odbc - Libraries for enabling ODBC applications
dev-db/oracle-instantclient:precomp - "proc" binary and related files to precompile a Pro*C application
dev-db/oracle-instantclient:sdk - Header files and an example makefile for developing Oracle applications
dev-db/oracle-instantclient:sqlplus - The SQL*Plus command line tool for SQL and PL/SQL queries
dev-db/oracle-instantclient:tools - Data Pump, SQL*Loader and Workload Replay Client
dev-db/percona-server:cjk - Add CJK support for InnoDB fulltext search using app-text/mecab
dev-db/percona-server:latin1 - Use LATIN1 encoding instead of UTF8
dev-db/percona-server:numa - Enable NUMA support using sys-process/numactl (NUMA kernel support is also required)
dev-db/percona-server:profiling - Add support for statement profiling (requires USE=community).
dev-db/percona-server:rocksdb - Add support for RocksDB; a key/value, LSM database optimized for flash storage
dev-db/percona-server:router - Build the MySQL router program
dev-db/percona-server:server - Build the server program
dev-db/percona-server:tokudb - Add support for TokuDB storage engine
dev-db/percona-server:tokudb-backup-plugin - Builds the TokuDB backup plugin
dev-db/pgbouncer:c-ares - Use c-ares as the DNS backend instead of evdns (libevent).
dev-db/pgbouncer:udns - Use udns as the DNS backend instead of evdns (libevent). Supports IPv4 only.
dev-db/pgpool2:memcached - Use memcached for query caching.
dev-db/phpmyadmin:setup - Installs the phpMyAdmin setup utility. Users who don't use the utility should disable this USE flag for security reasons as the setup tool was the target of various exploits in the past.
dev-db/postgis:address-standardizer - Normalize US and CA postal addresses
dev-db/postgis:gtk - Build graphical interface for shp2pgsql (shp2pgsql-gui)
dev-db/postgis:topology - Build topology spatial types and functions
dev-db/postgresql:llvm - Add support for llvm JIT engine
dev-db/postgresql:server - Disable to build and install the clients and libraries only.
dev-db/postgresql:uuid - Enable server side UUID generation (via dev-libs/ossp-uuid).
dev-db/psqlodbc:iodbc - Use dev-db/libiodbc. Disable to use dev-db/unixODBC.
dev-db/recutils:curl - Enable support for remote descriptors using net-misc/curl
dev-db/recutils:mdb - Build the mdb2rec utility using app-office/mdbtools
dev-db/redict:tcmalloc - Use tcmalloc from dev-util/google-perftools for allocations.
dev-db/redis:tcmalloc - Use tcmalloc from dev-util/google-perftools for allocations.
dev-db/spatialite:geos - Add the sci-libs/geos library for exact topological tests
dev-db/spatialite:proj - Add the sci-libs/proj library for reprojection features
dev-db/spatialite:rttopo - Add the sci-geosciences/librttopo library for topology support
dev-db/spatialite:xls - Add the dev-libs/freexl library for xls import support
dev-db/sqldeveloper:sybase - Add support for the Sybase SQL Database Server
dev-db/sqlite:secure-delete - Enable overwriting of deleted content with zeros by default (http://sqlite.org/pragma.html#pragma_secure_delete), causing some performance penalty
dev-db/sqlite:tools - Install additional tools, among which are included: sqlite3-analyzer, sqlite3-changeset, sqlite3-db-dump, sqlite3-diff, sqlite3-rbu, sqlite3-expert and others.
dev-db/sqlitebrowser:sqlcipher - Allow to open and to edit databases encrypted using dev-db/sqlcipher
dev-db/sqlitestudio:cli - Build CLI interface
dev-db/timescaledb:proprietary-extensions - Enable proprietary features/extensions licensed under the TimeScale License
dev-db/unixODBC:minimal - Disable bundled drivers and extra libraries (most users don't need these)
dev-db/unixODBC:odbcmanual - Administrator, Internal Structure, Programmer and User documentation
dev-debug/bpftrace:fuzzing - Build bpftrace for fuzzing
dev-debug/bpftrace:lldb - Parse debug info usingdev-debug/lldb
dev-debug/dtrace:test-install - Install the testsuite for manual use. It is not suitable for automatic execution within the ebuild because it requires root privlieges.
dev-debug/gdb:cet - Enable Intel Control-flow Enforcement Technology.
dev-debug/gdb:debuginfod - Enable debuginfod support via dev-libs/elfutils libdebuginfod
dev-debug/gdb:lzma - Support lzma compression in ELF debug info
dev-debug/gdb:multitarget - Support all known targets in one gdb binary
dev-debug/gdb:python - Enable support for the new internal scripting language, as well as extended pretty printers
dev-debug/gdb:server - Install the "gdbserver" program (useful for embedded/remote targets)
dev-debug/gdb:sim - Build gdb's simulators for various hardware platforms. See https://sourceware.org/gdb/wiki/Sim.
dev-debug/gdb:source-highlight - Enable listing highlighting via dev-util/source-highlight
dev-debug/gdb:xml - Support parsing XML data files needed (at least) for cpu features, memory maps, and syscall tracing
dev-debug/gdb:xxhash - Use dev-libs/xxhash to speed up internal hashing.
dev-debug/lldb:debuginfod - Expose the transitive dependencies on net-misc/curl and dev-cpp/cpp-httplib) to match sys-devel/llvm.
dev-debug/ltrace:elfutils - Use libdwfl from dev-libs/elfutils for frame unwinding support
dev-debug/ltrace:unwind - Use sys-libs/libunwind for frame unwinding support
dev-debug/strace:aio - Enable dev-libs/libaio support for tracing Asynchronous I/O operations
dev-debug/strace:elfutils - Enable stack backtraces (-k flag) via dev-libs/elfutils
dev-debug/strace:unwind - Enable stack backtraces (-k flag) via sys-libs/libunwind
dev-debug/sysdig:bpf - Enable the BPF probe as alternative event source to dev-debug/scap-driver.
dev-debug/sysdig:modules - Build kernel modules needed for tracing local events. Disable this only if you intend to use sysdig purely to work with dumpfiles.
dev-debug/systemtap:debuginfod - Enable debuginfod support via dev-libs/elfutils libdebuginfod
dev-debug/systemtap:dtrace-symlink - Provide /usr/bin/dtrace symlink pointing to /usr/bin/stap-dtrace. This prevents coinstallation with dev-debug/dtrace.
dev-debug/systemtap:libvirt - Support probing of libvirt domains.
dev-embedded/avrdude:ftdi - Enable support for USB FTDI chips via dev-embedded/libftdi
dev-embedded/libftdi:tools - build ftdi_eeprom helper tool
dev-embedded/openocd:capstone - Use dev-libs/capstone for disassembly support
dev-embedded/openocd:cmsis-dap - Support for CMSIS-DAP compliant adapters
dev-embedded/openocd:dummy - Build the dummy port driver
dev-embedded/openocd:ftdi - Enable support for USB FTDI chips via dev-embedded/libftdi
dev-embedded/openocd:gpiod - Enable Linux GPIO bitbang support via libgpiod
dev-embedded/openocd:jlink - Build the SEGGER J-Link driver
dev-embedded/openocd:parport - Enable support for parport JTAG devices
dev-embedded/openocd:verbose-io - Verbose IO and comm JTAG and USB messages
dev-embedded/rpi-eeprom:pi4 - Install firmware files for the Raspberry Pi 4
dev-embedded/rpi-eeprom:pi5 - Install firmware files for the Raspberry Pi 5
dev-embedded/sdcc:boehm-gc - Enable Hans Boehm's garbage collector dev-libs/boehm-gc
dev-embedded/sdcc:device-lib - Enable built of devices libraries
dev-embedded/sdcc:ds390 - Add support for Dallas DS390
dev-embedded/sdcc:ds400 - Add support for Dallas DS400
dev-embedded/sdcc:ez80-z80 - Add support for EZ80-Z80
dev-embedded/sdcc:hc08 - Add support for Freescale/Motorola HC08 based
dev-embedded/sdcc:mcs51 - Add support for Intel mcs51
dev-embedded/sdcc:mos6502 - Add support for MOS 6502
dev-embedded/sdcc:mos65c02 - Add support for MOS 65C02
dev-embedded/sdcc:non-free - Enable non-free runtime library parts
dev-embedded/sdcc:packihx - Enable Intel HEX files pack utility
dev-embedded/sdcc:pdk13 - Add support for PDK13
dev-embedded/sdcc:pdk14 - Add support for PDK14
dev-embedded/sdcc:pdk15 - Add support for PDK15
dev-embedded/sdcc:pdk16 - Add support for PDK16
dev-embedded/sdcc:pic14 - Add support for Microchip 14 bits PICs
dev-embedded/sdcc:pic16 - Add support for Microchip 16 bits PICs
dev-embedded/sdcc:r2k - Add support for Rabbit 2000
dev-embedded/sdcc:r2ka - Add support for Rabbit 2000A
dev-embedded/sdcc:r3ka - Add support for Rabbit 3000A
dev-embedded/sdcc:s08 - Add support for Freescale/Motorola S08
dev-embedded/sdcc:sdcdb - Enable SDCC source level debugger
dev-embedded/sdcc:sdcpp - Enable SDCC preprocessor based on GCC cpp
dev-embedded/sdcc:sm83 - Add support for Gameboy SM83
dev-embedded/sdcc:stm8 - Add support for STMicroelectronics STM8
dev-embedded/sdcc:tlcs90 - Add support for TLCS-90
dev-embedded/sdcc:ucsim - Enable software simulator for microcontrollers
dev-embedded/sdcc:z180 - Add support for Zilog Z180
dev-embedded/sdcc:z80 - Add support for Zilog Z80
dev-embedded/sdcc:z80n - Add support for Zilog Z80N
dev-embedded/u-boot-tools:envtools - Build only the target-side environment tools
dev-embedded/urjtag:ftd2xx - Enable support for USB FTDI chips via dev-embedded/libftd2xx
dev-embedded/urjtag:ftdi - Enable support for USB FTDI chips via dev-embedded/libftdi
dev-games/godot:deprecated - Enable support for deprecated features
dev-games/godot:raycast - Enable the raycast Editor module using media-libs/embree
dev-games/godot:tools - Enable the Godot Editor for game development
dev-games/guichan:allegro - Build the Allegro frontend
dev-games/mygui:l10n_ru - Install some additional russian docs if 'doc' useflag enabled
dev-games/mygui:ogre - Use the ogre render subsystem. (cannot combine with opengl)
dev-games/mygui:opengl - Use the opengl render subsystem. (cannot combine with ogre)
dev-games/mygui:plugins - Build MyGUI plugins
dev-games/mygui:samples - Install MyGUI demos (needs ogre USE flag)
dev-games/mygui:tools - Build the tools for development
dev-games/ode:double-precision - more precise calculations at the expense of speed
dev-games/ode:gyroscopic - enable gyroscopic term (may cause instability)
dev-games/ogre:assimp - Use media-libs/assimp to import assets from 3D files
dev-games/ogre:boost - Enable boost support
dev-games/ogre:bullet - Use sci-physics/bullet for physics plugin
dev-games/ogre:cache - Enable GL state cache support
dev-games/ogre:cg - NVIDIA toolkit plugin
dev-games/ogre:deprecated - Build deprecated nodeless positioning of Lights and Cameras.
dev-games/ogre:double-precision - More precise calculations at the expense of speed
dev-games/ogre:egl - Use egl instead of glx
dev-games/ogre:fine-granularity - Enable fine light mask granularity. This impacts on performance and should not be enabled unless an application really needs it.
dev-games/ogre:freeimage - Support images via media-libs/freeimage
dev-games/ogre:gl3plus - Build OpenGL 3+ RenderSystem
dev-games/ogre:gles3 - Enable OpenGL ES 3.x Features
dev-games/ogre:json - Use dev-libs/rapidjson (needed by Hlms JSON materials)
dev-games/ogre:legacy-animations - Use the skeletal animation from 1.x. It's much slower, but the new system is still experimental.
dev-games/ogre:ois - Pull in Object-oriented Input System library dev-games/ois for samples
dev-games/ogre:poco - When USE=threads, use poco for threading
dev-games/ogre:resman-pedantic - Resource Manager PEDANTIC : require an explicit resource group. Case sensitive lookup. Some demos might not work with this setting. (default: case-insensitive + sensitive lookup in all groups)
dev-games/ogre:tbb - When USE=threads, use tbb for threading
dev-games/ogre:tools - Build and install AssimpConverter (assimp USE flag is enabled), MeshUpgrader, VRMLConverter and XMLConverter
dev-games/openscenegraph:collada - Enable DAE file support via dev-libs/collada-dom
dev-games/openscenegraph:dicom - Enable DICOM medical image file support via sci-libs/dcmtk
dev-games/openscenegraph:fox - Build examples using x11-libs/fox library
dev-games/openscenegraph:gdal - Enable support for sci-libs/gdal library
dev-games/openscenegraph:las - Enable support for geospatial data LAS LiDAR format using sci-geosciences/liblas
dev-games/openscenegraph:openinventor - Build OpenInventor plugin
dev-games/openscenegraph:osgapps - Build osg applications
dev-games/openscenegraph:sdl2 - Use media-libs/libsdl2 additionally to media-libs/libsdl
dev-games/openscenegraph:xrandr - Enable support for the X xrandr extension
dev-games/openscenegraph-openmw:collada - Enable DAE file support via dev-libs/collada-dom
dev-games/openscenegraph-openmw:dicom - Enable DICOM medical image file support via sci-libs/dcmtk
dev-games/openscenegraph-openmw:fox - Build examples using x11-libs/fox library
dev-games/openscenegraph-openmw:gdal - Enable support for sci-libs/gdal library
dev-games/openscenegraph-openmw:las - Enable support for geospatial data LAS LiDAR format using sci-geosciences/liblas
dev-games/openscenegraph-openmw:openinventor - Build OpenInventor plugin
dev-games/openscenegraph-openmw:osgapps - Build osg applications
dev-games/openscenegraph-openmw:sdl2 - Use media-libs/libsdl2 additionally to media-libs/libsdl
dev-games/openscenegraph-openmw:xrandr - Enable support for the X xrandr extension
dev-games/physfs:7zip - Enable 7zip/lzma archive support
dev-games/physfs:grp - Enable Build Engine GRP archive support
dev-games/physfs:hog - Enable Descent I/II HOG archive support
dev-games/physfs:iso - Enable ISO9660 file support
dev-games/physfs:mvl - Enable Descent I/II MVL archive support
dev-games/physfs:qpak - Enable Quake I/II QPAK archive support
dev-games/physfs:slb - Enable Independence War SLB archive support
dev-games/physfs:vdf - Enable Gothic/Gothic II VDF archive support
dev-games/physfs:wad - Enable Doom WAD archive support
dev-games/simgear:dns - Enable DNS resolver via net-libs/udns
dev-games/simgear:gdal - Enable alternative terrain engine based on pagedLOD via sci-libs/gdal
dev-games/simgear:subversion - Enable terrasync scenery downloader
dev-games/tiled:minimal - Exclude optional plugins and development headers
dev-gap/grape:bliss - Use sci-libs/bliss instead of sci-mathematics/nauty as the backend.
dev-haskell/abstract-deque:usecas - Enable the reference implementation to use hardware compare-and-swap.
dev-haskell/aeson:cffi - Controls whether to include c-ffi bits or pure haskell. Default to False for security.
dev-haskell/aeson:ordered-keymap - Use ordered @Data.Map.Strict@ for KeyMap implementation.
dev-haskell/aeson-pretty:executable - build/install the command-line tool as well as the library
dev-haskell/aeson-pretty:lib-only - don't build 'aeson-pretty' executable.
dev-haskell/ansi-terminal:example - Build the example application
dev-haskell/assoc:tagged - You can disable the use of the `tagged` package using `-f-tagged`. Disabing this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/atomic-primops:debug - Enable extra internal checks.
dev-haskell/bifunctors:semigroups - You can disable the use of the `semigroups` package using `-f-semigroups`. Disabing this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/bifunctors:tagged - You can disable the use of the `tagged` package using `-f-tagged`. Disabing this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/bitvec:gmp - Link against the GMP library for the ultimate performance of `zipBits`, `invertBits` and `countBits`. Users are strongly encouraged to enable this flag whenever possible.
dev-haskell/boring:tagged - You can disable the use of the `tagged` package using `-f-tagged`. Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/c2hs:regression - Enable regression suite build.
dev-haskell/cabal-install:lukko - Use @lukko@ for file-locking
dev-haskell/cabal-install:native-dns - Enable use of the [resolv](https://hackage.haskell.org/package/resolv) & [windns](https://hackage.haskell.org/package/windns) packages for performing DNS lookups
dev-haskell/cairo:svg - Build the Scalable Vector Graphics (SVG) backend of Cairo.
dev-haskell/chell:color-output - use colors in program output
dev-haskell/citeproc:executable - Build citeproc executable
dev-haskell/citeproc:icu - Use Haskell bindings to the ICU library
dev-haskell/cmdargs:examples - Build the cmdargs-demo program
dev-haskell/cmdargs:quotation - Build the Quote module
dev-haskell/cmdargs:testprog - Build the test program
dev-haskell/comonad:indexed-traversable - You can disable the use of the `indexed-traversable` package using `-f-indexed-traversable`. Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users. If disabled we will not supply instances of `FunctorWithIndex`
dev-haskell/contravariant:semigroups - You can disable the use of the `semigroups` package using `-f-semigroups`. Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/contravariant:statevar - You can disable the use of the `StateVar` package using `-f-StateVar`. Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/contravariant:tagged - You can disable the use of the `tagged` package on older versons of GHC using `-f-tagged`. Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/criterion:embed-data-files - Embed the data files in the binary for a relocatable executable. (Warning: This will increase the executabl size significantly.)
dev-haskell/crypto-api:all-cpolys - Build all the CMAC polynomes up to 10000 bits instead of just the usual ones
dev-haskell/cryptohash-sha256:executable - Build the cryptohash-sha256sum executable
dev-haskell/crypton:check-alignment - extra check on alignment in C layers, which cause lowlevel assert errors. for debugging only.
dev-haskell/crypton:integer-gmp - Whether or not to use GMP for some functions
dev-haskell/crypton:old-toolchain-inliner - use -fgnu89-inline to workaround an old compiler / linker / glibc issue.
dev-haskell/crypton:support-aesni - allow compilation with AESNI on system and architecture that supports it
dev-haskell/crypton:support-deepseq - add deepseq instances for cryptographic types
dev-haskell/crypton:support-pclmuldq - Allow compilation with pclmuldq on architecture that supports it
dev-haskell/crypton:support-rdrand - allow compilation with RDRAND on system and architecture that supports it
dev-haskell/crypton:support-sse - Use SSE optimized version of (BLAKE2, ARGON2)
dev-haskell/crypton:target-attributes - use GCC / clang function attributes instead of global target options.
dev-haskell/cryptonite:integer-gmp - Whether or not to use GMP for some functions
dev-haskell/cryptonite:target-attributes - use GCC / clang function attributes instead of global target options.
dev-haskell/dlist:werror - Enable -Werror
dev-haskell/doctest-driver-gen:executable - Build the doctest-driver-gen executable
dev-haskell/entropy:donotgetentropy - Avoid use of the getentropy() *nix function. By default getentropy will be used if detected during compilation (this plays poorly with cross compilation).
dev-haskell/entropy:halvm - Build for the HaLVM.
dev-haskell/foldable1-classes-compat:tagged - You can disable the use of the `tagged` package using `-f-tagged`. Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/foundation:experimental - Enable building experimental features, known as highly unstable or without good support cross-platform
dev-haskell/glib:closure-signals - Use the the GClosure-based signals implementation.
dev-haskell/gtk2hs-buildtools:closuresignals - Use the the GClosure-based signals implementation.
dev-haskell/hackage-security:lukko - Use @lukko@ for file-locking, otherwise use @GHC.IO.Handle.Lock@
dev-haskell/hashable:random-initial-seed - Randomly initialize the seed on every executable invocation. This is not a security feature and is intended only for testing (it can affect legitimate use cases).
dev-haskell/hashtables:bounds-checking - if on, use bounds-checking array accesses
dev-haskell/hashtables:detailed-profiling - add detailed profiling information to profiled build-depends
dev-haskell/haskeline:terminfo - Use the terminfo package for POSIX consoles.
dev-haskell/hdbc-sqlite3:splitbase - Choose the new smaller, split-up package.
dev-haskell/hslua-cli:executable - Compile `hslua` standalone executable.
dev-haskell/hslua-repl:executable - Compile `luarepl` standalone executable.
dev-haskell/hsyaml:exe - Enable @exe:yaml-test@ component
dev-haskell/http-api-data:text-show - Use text-show library for efficient ToHttpApiData implementations.
dev-haskell/httpd-shed:buildexamples - Build example executables.
dev-haskell/juicypixels:mmap - Enable the file loading via mmap (memory map)
dev-haskell/libyaml:system-libyaml - Use the system-wide libyaml instead of the bundled copy
dev-haskell/libyaml:unicode - Enable unicode output. Otherwise, unicode characters will be escaped.
dev-haskell/lpeg:rely-on-shared-lpeg-library - Do not build lpeg from source, but trust that lpeg is made available in other ways, e.g., through a system-wide installation. The loader will be replaced with a placeholder function that only emits a message.
dev-haskell/lua:system-lua - Use @pkg-config@ to discover library and include paths. Setting this flag implies `pkg-config`.
dev-haskell/markdown-unlit:executable - Build executable
dev-haskell/monad-logger:template-haskell - Enable Template Haskell support
dev-haskell/monad-par:chaselev - Use Chase-Lev Deques for higher-perf work-stealing.
dev-haskell/nats:binary - enable binary instances
dev-haskell/nats:hashable - enable hashable instances
dev-haskell/nats:template-haskell - enable template_haskell
dev-haskell/network:devel - using tests for developers
dev-haskell/nothunks:bytestring - Provide instances for bytestring
dev-haskell/nothunks:text - Provide instances for text
dev-haskell/nothunks:vector - Provide instances for vector
dev-haskell/pandoc:embed-data-files - Embed data files in binary for relocatable executable.
dev-haskell/parsec-numbers:parsec1 - use dev-haskell/parsec1 instead of dev-haskell/parsec
dev-haskell/parsers:attoparsec - You can disable the use of the `attoparsec` package using `-f-attoparsec`.
dev-haskell/parsers:binary - You can disable the use of the `binary` package using `-f-binary`.
dev-haskell/parsers:parsec - You can disable the use of the `parsec` package using `-f-parsec`.
dev-haskell/persistent-sqlite:build-sanity-exe - Build a sanity check test executable
dev-haskell/prettyprinter:buildreadme - Build the readme generator
dev-haskell/prettyprinter:text - While it's a core value of @prettyprinter@ to use @Text@, there are rare circumstances (mostly when @prettyprinter@ arises as a dependency of test suites of packages like @bytestring@ or @text@ themselves) when this is inconvenient. In this case one can disable this flag, so that @prettyprinter@ fallbacks to @String@.
dev-haskell/quickcheck:template-haskell - Build Test.QuickCheck.All, which uses Template Haskell.
dev-haskell/quickcheck-classes:aeson - You can disable the use of the `aeson` package using `-f-aeson`. This may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/quickcheck-classes:binary-laws - Include infrastructure for testing class laws of binary type constructors. It is required that this flag match the value that the `unary-laws` flag was given when building `quickcheck-classes-base`. Disabling `unary-laws` while keeping `binary-laws` enabled is an unsupported configuration.
dev-haskell/quickcheck-classes:semigroupoids - You can disable the use of the `semigroupoids` package using `-f-semigroupoids`. This may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/quickcheck-classes:semirings - You can disable the use of the `semirings` package using `-f-semirings`. This may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/quickcheck-classes:unary-laws - Include infrastructure for testing class laws of unary type constructors. It is required that this flag match the value that the `unary-laws` flag was given when building `quickcheck-classes-base`.
dev-haskell/quickcheck-classes:vector - You can disable the use of the `vector` package using `-f-vector`. This may be useful for accelerating builds in sandboxes for expert users.
dev-haskell/quickcheck-classes-base:binary-laws - Include infrastructure for testing class laws of binary type constructors. Disabling `unary-laws` while keeping `binary-laws` enabled is an unsupported configuration.
dev-haskell/quickcheck-classes-base:unary-laws - Include infrastructure for testing class laws of unary type constructors.
dev-haskell/random-bytestring:pcg - compile with support for PCG from pcg-random
dev-haskell/sandi:conduit - Build with conduit
dev-haskell/semialign:semigroupoids - Build with semigroupoids dependency
dev-haskell/sha:exe - Build a sha1 and a sha384 executable similar to 'md5sum'.
dev-haskell/shelly:lifted - run the tests against Shelly.Lifted
dev-haskell/simple-sendfile:allow-bsd - Allow use of BSD sendfile (disable on GNU/kFreeBSD)
dev-haskell/skein:big-endian - When manually selecting the endianness, use big-endian (default is little-endian).
dev-haskell/skein:force-endianness - Use a manually selected endian when compiling (see flag 'big-endian').
dev-haskell/skein:reference - Use the reference implementation instead of the optimized one.
dev-haskell/skylighting:executable - Whether to build the skylighting program
dev-haskell/skylighting-core:executable - Build skylighting-extract tool
dev-haskell/some:newtype-unsafe - Use implementation using @newtype@ and unsafe @Any@, instead of GADT
dev-haskell/splitmix:optimised-mixer - Use JavaScript for mix32
dev-haskell/tasty:clock - Depend on the clock package for more accurate time measurement
dev-haskell/texmath:executable - Compile test executable.
dev-haskell/texmath:server - Compile webserver.
dev-haskell/text-short:debug - Enable runtime-checks via 'assert'
dev-haskell/tls:compat - Accept SSLv2 client hello for beginning SSLv3 / TLS handshake
dev-haskell/tls:network - Use the base network library
dev-haskell/transformers-base:orphaninstances - Build instances for orphan datatypes.
dev-haskell/typst:executable - Compile executable to be used in testing and development.
dev-haskell/unicode-collation:doctests - Run doctests as part of test suite. Use with: @--write-ghc-environment-files=always@.
dev-haskell/unicode-collation:executable - Build the unicode-collate executable.
dev-haskell/unix-compat:old-time - build against old-time package
dev-haskell/vector:boundschecks - Enable bounds checking
dev-haskell/vector:internalchecks - Enable internal consistency checks at the cost of a significant performance penalty
dev-haskell/vector:unsafechecks - Enable bounds checking in unsafe operations at the cost of a significant performance penalty
dev-haskell/vector-algorithms:bench - Build a benchmarking program to test vector-algorithms performance
dev-haskell/vector-algorithms:boundschecks - Enable bounds checking
dev-haskell/vector-algorithms:internalchecks - Enable internal consistency checks at the cost of a significant performance penalty.
dev-haskell/vector-algorithms:properties - Enable the quickcheck tests
dev-haskell/vector-algorithms:unsafechecks - Enable bounds checking in unsafe operations at the cost of a significant performance penalty.
dev-haskell/void:safe - dissable effective but unsafe coersions
dev-haskell/wai-app-static:print - print debug info.
dev-haskell/warp:allow-sendfilefd - Allow use of sendfileFd (not available on GNU/kFreeBSD)
dev-haskell/warp:x509 - Adds a dependency on the x509 library to enable getting TLS client certificates.
dev-haskell/wcwidth:cli - Enable command line tool
dev-haskell/yaml:executable - Install the yaml2json and json2yaml executables
dev-haskell/yesod-form:network-uri - Get Network.URI from the network-uri package
dev-haskell/zip-archive:executable - Build the Zip executable.
dev-haskell/zlib:bundled-c-zlib - Use the bundled zlib C sources. Requires pkg-config to be False. For windows, this is the default.
dev-haskell/zlib:non-blocking-ffi - The (de)compression calls can sometimes take a long time, which prevents other Haskell threads running. Enabling this flag avoids this unfairness, but with greater overall cost.
dev-java/ant:antlr - Enable ANTLR Ant tasks
dev-java/ant:bcel - Enable bcel (bytecode manipulation) Ant tasks
dev-java/ant:bsf - Enable support for Apache Bean Scripting Framework (dev-java/bsf)
dev-java/ant:commonslogging - Enable commons-logging Ant tasks
dev-java/ant:commonsnet - Enable commons-net Ant tasks
dev-java/ant:imageio - Enable imageio Ant tasks
dev-java/ant:jai - Enable JAI (Java Imaging) Ant task
dev-java/ant:jakartamail - Enable Jakartamail Ant task
dev-java/ant:javamail - Enable JavaMail Ant task
dev-java/ant:jdepend - Enable Jdepend Ant tasks
dev-java/ant:jmf - Enable JMF (Java Media Framework) Ant tasks
dev-java/ant:jsch - Disable Jsch (ssh, scp and related) Ant tasks
dev-java/ant:junit - Enable JUnit Ant tasks
dev-java/ant:junit4 - Enable JUnit4 Ant tasks
dev-java/ant:junitlauncher - Enable JUnit5 Ant tasks
dev-java/ant:log4j - Enable Apache log4j Ant tasks
dev-java/ant:oro - Enable Apache Oro Ant tasks
dev-java/ant:regexp - Enable Apache Regexp Ant tasks
dev-java/ant:resolver - Enable Apache Resolver Ant tasks
dev-java/ant:swing - Enable Swing Ant tasks
dev-java/ant:testutil - Enable optional test util classes
dev-java/ant:xalan - Enable Apache Xalan2 Ant tasks
dev-java/ant:xz - Enable XZ Ant tasks
dev-java/commons-logging:log4j - Add optional support for log4j
dev-java/dom4j:jaxen - Includes org.jaxen.dom4j package
dev-java/emma:launcher - Install /usr/bin/emma. Collides with sci-biology/emboss.
dev-java/java-config:compat - Install bin/java-config-2 symlink pointing to java-config
dev-java/javacup:ant-task - Build and register the ant-task
dev-java/jaxen:dom4j - Includes org.jaxen.dom4j package
dev-java/jaxen:jdom - Includes org.jaxen.jdom package
dev-java/jaxen:xom - Includes org.jaxen.xom package
dev-java/jflex:ant-task - Build and register the ant-task
dev-java/junit:migration-support - Include the junit-jupiter-migrationsupport module, which helps with migration from JUnit 4 to JUnit Jupiter
dev-java/junit:suite - Include the JUnit Platform Suite Engine, which adds test suite support
dev-java/junit:vintage - Include JUnit Vintage, which allows JUnit 5 to run JUnit 3 and JUnit 4 tests
dev-java/openjdk:headless-awt - Don't install the X backend for AWT, needed by some GUIs
dev-java/openjdk:javafx - Import OpenJFX modules at build time, via dev-java/openjfx
dev-java/openjdk:jbootstrap - Build OpenJDK twice, the second time using the result of the first
dev-java/openjdk:source - Install JVM sources
dev-java/openjdk:system-bootstrap - Bootstrap using installed openjdk
dev-java/openjdk:systemtap - Enable SystemTap/DTrace tracing
dev-java/openjdk-bin:headless-awt - Don't install the X backend for AWT, needed by some GUIs (used to be X flag)
dev-java/openjdk-bin:source - Install JVM sources
dev-java/openjdk-jre-bin:headless-awt - Don't install the X backend for AWT, needed by some GUIs (used to be X flag)
dev-java/openjfx:media - Compile media module, based on gstreamer-minimal (does not pull gstreamer)
dev-java/openjfx:source - Install JavaFX sources
dev-java/pdfbox:tools - Build and install pdfbox-tools
dev-java/protobuf-java:system-protoc - Use protoc provided by dev-libs/protobuf
dev-java/qdox:ant-task - Build the ant-task
dev-java/rxtx:lfd - Installs and uses LockFileServer daemon (lfd)
dev-java/saxon:ant-task - BUILD and register the ant-task
dev-java/sbt:binary - Install from (Gentoo-compiled) binary instead of building from sources. Set this when you run out of memory during build.
dev-lang/R:libdeflate - Use app-arch/libdeflate rather than sys-libs/zlib for lazy-loaded R objects.
dev-lang/algol68g:mpfr - Add support for multiprecision floating point rouding
dev-lang/ammonite-repl-bin:scala2-13 - Install Ammonite for Scala 2.13
dev-lang/ammonite-repl-bin:scala3-0 - Install Ammonite for Scala 3.0
dev-lang/ammonite-repl-bin:scala3-1 - Install Ammonite for Scala 3.1
dev-lang/ammonite-repl-bin:scala3-2 - Install Ammonite for Scala 3.2
dev-lang/bas:lr0 - Use the LR0 parser instead of the recursive descending parser
dev-lang/crystal:debug - Build each module as a separate object file. Speeds build up.
dev-lang/erlang:kpoll - Enable kernel polling support
dev-lang/gdl:eigen - Build matrix manipulation with dev-cpp/eigen
dev-lang/gdl:glpk - Use GNU Linear Programming Kit sci-mathematics/glpk
dev-lang/gdl:gshhs - Add support for projection adn continent maps with sci-geosciences/gshhs-data
dev-lang/gdl:hdf - Add support for the Hierarchical Data Format v.4
dev-lang/gdl:proj - Add support for sci-libs/proj (geographic projections)
dev-lang/gdl:shapelib - Add support for manipulating ESRI Shapefiles with sci-libs/shapelib
dev-lang/gdl:udunits - Add support for manipulating units of physical quantities
dev-lang/gforth:check - Enable build-time sanity check.
dev-lang/ghc:binary - Install the binary version directly, rather than using it to build the source version.
dev-lang/ghc:elfutils - Enable DWARF-based backtraces using dev-libs/elfutils.
dev-lang/ghc:ghcbootstrap - Internal: Bootstrap GHC from an existing GHC installation.
dev-lang/ghc:ghcmakebinary - Internal: Build binary friendly for redistribution.
dev-lang/ghc:gmp - Use dev-libs/gmp for integer operations (works faster, but an external depend).
dev-lang/ghc:llvm - Pull in dependencies for the sys-devel/llvm codegen backend.
dev-lang/ghc:numa - Enable NUMA thread balancing policy using sys-process/numactl.
dev-lang/ghc:unregisterised - Create an unregisterised build in which only the C codegen backend will be available.
dev-lang/gnat-gpl:ada - Build the ADA language (GNAT) frontend
dev-lang/gnat-gpl:cet - Enable support for Intel Control Flow Enforcement Technology (CET)
dev-lang/gnat-gpl:d - Enable support for the D programming language
dev-lang/gnat-gpl:default-stack-clash-protection - Build packages with stack clash protection on by default
dev-lang/gnat-gpl:default-znow - Request full relocation on start from ld.so by default
dev-lang/gnat-gpl:fixed-point - Enable fixed-point arithmetic support for MIPS targets in gcc (Warning: significantly increases compile time!)
dev-lang/gnat-gpl:go - Build the GCC Go language frontend.
dev-lang/gnat-gpl:graphite - Add support for the framework for loop optimizations based on a polyhedral intermediate representation
dev-lang/gnat-gpl:libssp - Build SSP support into a dedicated library rather than use the code in the C library (DO NOT ENABLE THIS IF YOU DON'T KNOW WHAT IT DOES)
dev-lang/gnat-gpl:modula2 - Build the GCC Modula-2 language frontend.
dev-lang/gnat-gpl:objc - Build support for the Objective C code language
dev-lang/gnat-gpl:objc++ - Build support for the Objective C++ language
dev-lang/gnat-gpl:objc-gc - Build support for the Objective C code language Garbage Collector
dev-lang/gnat-gpl:pgo - Build GCC using Profile Guided Optimization (PGO)
dev-lang/gnat-gpl:rust - Build support for the Rust language, installs gccrs.
dev-lang/gnat-gpl:sanitize - Build support for various sanitizer functions (ASAN/TSAN/etc...)
dev-lang/gnat-gpl:ssp - Build packages with stack smashing protector on by default
dev-lang/gnat-gpl:system-bootstrap - Bootstrap using installed Ada compiler
dev-lang/gnat-gpl:systemtap - enable systemtap static probe points
dev-lang/gnat-gpl:vtv - Build support for virtual table verification (a C++ hardening feature)
dev-lang/gnucobol:json - Enable support for JSON template formatting via dev-libs/json-c
dev-lang/idris2:chez - build using dev-scheme/chez
dev-lang/idris2:racket - build using dev-scheme/racket
dev-lang/idris2:test-full - pull in depedndencies to run all tests
dev-lang/inform:tools - Install blorbtools for manipulating Blorb files
dev-lang/ispc:gpu - Enable Level0 GPU support in ispcrt.
dev-lang/ispc:openmp - Build with OpenMP task model (otherwise, TBB task model is used).
dev-lang/janet:static-libs - install janet static library archive, you must enable this flag for using `jpm build`
dev-lang/jerryscript:debugger - Install jerry-debugger
dev-lang/jsonnet:custom-optimization - Build with user-specified compiler optimizations (-Os, -O0, -O1, -O2, -O3) from CFLAGS (unsupported)
dev-lang/lazarus:extras - Build a lot of extra packages, including lhelp chm viewer program.
dev-lang/lazarus:gtk2 - Use gtk:2 for widgets.
dev-lang/lazarus:gui - Build GUI IDE.
dev-lang/lazarus:minimal - Don't build extra packages from the bigide component
dev-lang/logtalk:fop - Support for generating pdf documentation using fop
dev-lang/logtalk:xslt - Support for generating html documentation using xslt
dev-lang/lua:deprecated - make deprecated data structures/routines available
dev-lang/luajit:lua52compat - Enable some upwards-compatible features from Lua 5.2 that are unlikely to break existing code.
dev-lang/mercury:trail - Support Mercury trail grades
dev-lang/mercury-extras:tommath - Enable support for tommath library
dev-lang/mlton:binary - install a binary version
dev-lang/mlton:bootstrap-smlnj - Boostrap mlton with dev-lang/smlnj (takes a long time)
dev-lang/mlton:pax-kernel - Enable if the user plans to run the package under a pax enabled hardened kernel
dev-lang/mlton:stage3 - After bootstrap building mlton with dev-lang/smlnj, rebuild mlton with the second stage build of mlton (recommended).
dev-lang/moarvm:asan - Enable clang's Address Sanitizer functionality. Expect longer compile time.
dev-lang/moarvm:clang - Use clang compiler instead of GCC
dev-lang/moarvm:jit - Enable Just-In-Time-Compiler. Has no effect except on AMD64 and Darwin.
dev-lang/moarvm:optimize - Enable optimization via CFLAGS
dev-lang/moarvm:ubsan - Enable clang's Undefined Behavior Sanitizer functionality. Expect longer compile time.
dev-lang/mono:pax-kernel - Enable if the user plans to run the package under a pax enabled hardened kernel
dev-lang/mono:xen - Make mono generate code that is considerably faster on xen VMs but slightly slower on for normal systems.
dev-lang/neko:apache - Build Apache modules
dev-lang/nim:test-js - Enable tests that require Node.js
dev-lang/nqp:clang - Toggle usage of the clang compiler in conjunction with MoarVM
dev-lang/nqp:moar - Build the MoarVM backend (experimental/broken)
dev-lang/ocaml:flambda - Enables the Flambda optimizer: A new intermediate representation (introduced in ocaml 4.03) in the depths of the compiler designed to allow for better inlining.
dev-lang/ocaml:spacetime - Enables the Spacetime memory profiler. See https://caml.inria.fr/pub/docs/manual-ocaml/spacetime.html for more information.
dev-lang/php:apparmor - Support FPM application confinement through sys-libs/libapparmor
dev-lang/php:argon2 - Enable password hashing algorithm from app-crypt/argon2
dev-lang/php:bcmath - Enable the BCMath Arbitrary Precision Mathematics extension
dev-lang/php:capstone - Support opcache JIT disassembly through dev-libs/capstone
dev-lang/php:cli - Enable the Command-Line Interface (CLI) SAPI
dev-lang/php:coverage - Include gcov symbols for test coverage and lcov reports. Only useful for extension developers, and requires GCC.
dev-lang/php:ctype - Enable the Character type checking (ctype) extension
dev-lang/php:embed - Enable embed SAPI
dev-lang/php:enchant - Enable the Enchant spelling library extension using app-text/enchant
dev-lang/php:ffi - Enable the Foreign Function Interface (FFI) extension using dev-libs/libffi
dev-lang/php:fileinfo - Enable the File Information extension
dev-lang/php:filter - Enable the Data Filtering extension
dev-lang/php:flatfile - Add dbm support for flat files
dev-lang/php:fpm - Enable the FastCGI Process Manager SAPI
dev-lang/php:gd - Enable the Image Processing and GD extension (requires media-libs/libjpeg-turbo and media-libs/libpng)
dev-lang/php:inifile - Add dbm support for .ini files
dev-lang/php:intl - Enables the intl extension for extended internalization support
dev-lang/php:ipv6 - Support IPv6 connectivity in fopen and friends, and v6 address conversions in functions like inet_pton and inet_ntop.
dev-lang/php:jit - Enable PCRE JIT support
dev-lang/php:ldap-sasl - Add SASL support for the PHP LDAP extension using dev-libs/cyrus-sasl
dev-lang/php:lmdb - Enable support for dev-db/lmdb db backend
dev-lang/php:opcache - Enables built-in opcode cache, replacing pecl-apc et al.
dev-lang/php:opcache-jit - Enable Just In Time (JIT) compilation within the opcache extension
dev-lang/php:pcntl - Enable the Process Control extension
dev-lang/php:pdo - Enable the PHP Data Objects extension
dev-lang/php:phar - Enables the phar extension to provide phar archive support
dev-lang/php:phpdbg - Enable the PHP Debug Command Line SAPI (like gdb for php)
dev-lang/php:session-mm - Include dev-libs/mm support for session storage
dev-lang/php:sharedmem - Enable the shmop extension
dev-lang/php:simplexml - Enable the SimpleXML extension
dev-lang/php:sodium - Enable support for crypto through dev-libs/libsodium
dev-lang/php:sysvipc - Enable the PHP System-V semaphore, shared memory and IPC extension
dev-lang/php:tokenizer - Add support for the PHP file parser
dev-lang/php:tokyocabinet - Enable support for dev-db/tokyocabinet db backend
dev-lang/php:xmlreader - Enable the XMLReader extension
dev-lang/php:xmlwriter - Enable the XMLWriter extension
dev-lang/php:xslt - Build the XSL extension
dev-lang/polyml:portable - Build the portable interpreter version of Poly/ML instead of native
dev-lang/pypy:ensurepip - Install the ensurepip module that uses bundled wheels to bootstrap pip and setuptools (if disabled, it will be only possible to use venv `--without-pip`)
dev-lang/pypy:full-stdlib - Install complete stdlib as necessary to use PyPy for general purpose programs. By default, only a limited subset that is used when building PyPy3 executables is installed. Note that PyPy2.7's stdlib contains multiple known vulnerabilities.
dev-lang/pypy:symlink - Install "pypy3" symlink, making this PyPy slot the default PyPy3 implementation that is used for building Gentoo packages.
dev-lang/pypy:test-install - Install the test suite packages, that are required to run tests in a few reverse dependencies.
dev-lang/python:bluetooth - Build Bluetooth protocol support in socket module
dev-lang/python:ensurepip - Install the ensurepip module that uses bundled wheels to bootstrap pip and setuptools (if disabled, it will be only possible to use venv `--without-pip`)
dev-lang/python:jit - Enable experimental Just-In-Time compilation support.
dev-lang/python:libedit - Link readline extension against dev-libs/libedit instead of sys-libs/readline
dev-lang/python:pgo - Optimize the build using Profile Guided Optimization (PGO) by running Python's test suite and collecting statistics based on its performance. This will take longer to build.
dev-lang/python:valgrind - Disable pymalloc when running under dev-debug/valgrind is detected (may incur minor performance penalty even when valgrind is not used)
dev-lang/python:wininst - Install Windows executables required to create an executable installer for MS Windows
dev-lang/python-exec:native-symlinks - Install generic symlinks like python and python3. If this flag is disabled, only versioned python3.X executables will be available to end users and ebuilds not using python eclasses.
dev-lang/qu-prolog:pedro - Pedro subscription/notification communications system
dev-lang/rakudo:clang - Use Clang to compile the MoarVM backend
dev-lang/rakudo:moar - Use the MoarVM as backend
dev-lang/ruby:rdoc - Install dev-ruby/rdoc after installing Ruby.
dev-lang/ruby:systemtap - Enable SystemTap/DTrace tracing
dev-lang/rust:clippy - Install clippy, Rust code linter
dev-lang/rust:dist - Install dist tarballs (used for bootstrapping)
dev-lang/rust:miri - Install miri, an interpreter for Rust's mid-level intermediate representation (requires USE=nightly, sometimes is broken)
dev-lang/rust:nightly - Enable nightly (UNSTABLE) features (NOTE: it does not install nightly version, just enables features marked as nightly at time of release)
dev-lang/rust:parallel-compiler - Build a multi-threaded rustc (experimental, not tested by upstream)
dev-lang/rust:profiler - Build the profiler runtime and rust-demangler tool (needed for '-C profile-generate' or '-C instrument-coverage' codegen opts)
dev-lang/rust:rust-analyzer - Install rust-analyzer, A Rust compiler front-end for IDEs (language server)
dev-lang/rust:rust-src - Install rust-src, needed by developer tools and for build-std (cross)
dev-lang/rust:rustfmt - Install rustfmt, Rust code formatter
dev-lang/rust:system-bootstrap - Bootstrap using installed rust compiler
dev-lang/rust:system-llvm - Use the system LLVM installation
dev-lang/rust:wasm - Build support for the wasm32-unknown-unknown target
dev-lang/rust-bin:clippy - Install clippy, Rust code linter
dev-lang/rust-bin:profiler - Build the profiler runtime and rust-demangler tool (needed for '-C profile-generate' or '-C instrument-coverage' codegen opts)
dev-lang/rust-bin:rust-analyzer - Install rust-analyzer, A Rust compiler front-end for IDEs (language server)
dev-lang/rust-bin:rust-src - Install rust-src, needed by developer tools and for build-std (cross)
dev-lang/rust-bin:rustfmt - Install rustfmt, Rust code formatter
dev-lang/souffle:ffi - Support c++ functors with arbitrary number of arguments
dev-lang/souffle:swig - Enable SWIG usage, needed for Java and Python bindings
dev-lang/spidermonkey:clang - Use Clang compiler instead of GCC
dev-lang/spidermonkey:debug - Enable assertions to allow for easier debugging of programs that link to spidermonkey -- note this will often crash software on regular end-user systems
dev-lang/swi-prolog:archive - Use libarchive for extension packs
dev-lang/swi-prolog:cli - Add support for CLI interfaces based on readline and libedit
dev-lang/swi-prolog:ipc - Add support for TIPC inter-process communication
dev-lang/swi-prolog:pgo - Optimize the build using Profile Guided Optimization (PGO)
dev-lang/swi-prolog:yaml - Use libyaml for YAML pack
dev-lang/swig:ccache - build ccache-swig(a fast compiler cache)
dev-lang/vala:valadoc - Installs valadoc documentation generation tool
dev-lang/xsb:mariadb - Enable support for the mariadb database backend
dev-lang/yap:R - Enable support for connecting R to Prolog
dev-lang/yap:raptor - Enable support for Raptor RDF syntax libarary
dev-lang/zig:llvm - Build with LLVM backend and extensions enabled.
dev-libs/aml:examples - Build and install examples
dev-libs/antlr-c:debugger - Compiles debug info into the library
dev-libs/apache-arrow:compute - Build the Arrow Compute Modules
dev-libs/apache-arrow:dataset - Build the Arrow Dataset Modules
dev-libs/apache-arrow:json - Enables read/write json format
dev-libs/apache-arrow:parquet - Enables read/write parquet data format
dev-libs/apache-arrow:re2 - Build with support for regular expressions using the re2 library
dev-libs/appstream:apt - Enables Debians APT support
dev-libs/appstream-glib:fonts - Enable fonts support for appstream-builder.
dev-libs/appstream-glib:stemmer - Add word stemming via dev-libs/snowball-stemmer.
dev-libs/apr:old-kernel - Enable compatibility with older kernels
dev-libs/apr:urandom - Use /dev/urandom instead of /dev/random
dev-libs/apr-util:nss - Install apr_crypto_nss module
dev-libs/apr-util:openssl - Install apr_crypto_openssl module
dev-libs/atcore:gui - Build test GUI
dev-libs/bitset:tcmalloc - Use tcmalloc from dev-util/google-perftools for allocations
dev-libs/boehm-gc:large - optimize for large heap size (also increases max root sets)
dev-libs/boost:context - Build and install the Boost.Context (and Boost.Fiber) library and all other Boost libraries that depend on it
dev-libs/boost:debug - Build and install only the debug version of the Boost libraries. Only enable this flag if you're developing against boost.
dev-libs/boost:doc - Install the full API documentation documentation. This takes over 200MB of extra disk space.
dev-libs/boost:nls - Build libboost_locale. This library requires compatible C library interfaces, which might not be provided by uClibc or other embedded libraries.
dev-libs/boost:numpy - Optionally build NumPy extensions when Boost.Python is enabled
dev-libs/boost:stacktrace - Build the full Boost.Stacktrace dynamic library instead of relying on the header-only implementation
dev-libs/boost:tools - Build and install the boost tools (bcp, quickbook, inspect, wave)
dev-libs/botan:boost - Use dev-libs/boost
dev-libs/botan:tools - Install optional tools for e.g. hashing
dev-libs/check:subunit - Enable support for the subunit unit test protocol
dev-libs/cyberjack:tools - Build and install optional management tools.
dev-libs/cyrus-sasl:authdaemond - Add Courier-IMAP authdaemond unix socket support (net-mail/courier-imap, mail-mta/courier)
dev-libs/cyrus-sasl:ldapdb - Enable ldapdb plugin
dev-libs/cyrus-sasl:openldap - Add ldap support for saslauthd
dev-libs/cyrus-sasl:sample - Enable sample client and server
dev-libs/cyrus-sasl:srp - Enable SRP authentication
dev-libs/cyrus-sasl:urandom - Use /dev/urandom instead of /dev/random
dev-libs/date:only-c-locale - Build only the C locale
dev-libs/dbus-c++:ecore - Use Ecore integration
dev-libs/dbus-c++:glib - Use glib integration
dev-libs/eekboard:libcanberra - Enable support for media-libs/libcanberra
dev-libs/eekboard:xtest - Enable support for x11-libs/libXtst
dev-libs/efl:bmp - Enable WBMP image loader
dev-libs/efl:dds - Enable DDS image loader
dev-libs/efl:drm - Enable DRM engine
dev-libs/efl:eet - Enable Eet image loader
dev-libs/efl:efl-one - Combine multiple core libraries into one libefl.so
dev-libs/efl:fribidi - Enable bidirectional text support
dev-libs/efl:glib - Enable dev-libs/glib support
dev-libs/efl:harfbuzz - Enable complex text shaping and layout support
dev-libs/efl:hyphen - Enable text hyphenation support
dev-libs/efl:ibus - Enable Intelligent Input Bus
dev-libs/efl:ico - Enable Ico image loader
dev-libs/efl:json - Enable lottie animation support
dev-libs/efl:mono - Enable mono bindings
dev-libs/efl:physics - Enable Bullet physics effects and support
dev-libs/efl:pmaps - Enable PMAPS image loader
dev-libs/efl:psd - Enable PSD image loader
dev-libs/efl:scim - Enable Smart Common Input Method
dev-libs/efl:system-lz4 - Use system liblz4 instead of bundled one
dev-libs/efl:tga - Enable Tga image loader
dev-libs/efl:tgv - Enable Tgv image loader
dev-libs/efl:tslib - Enable x11-libs/tslib for touchscreen events
dev-libs/efl:unwind - Enable debug support via sys-libs/libunwind
dev-libs/efl:xcf - Enable XCF image loader
dev-libs/efl:xim - Enable X Input Method
dev-libs/efl:xpresent - Enable x11-libs/libXpresent support
dev-libs/elfutils:debuginfod - Enable debuginfod support, both the debuginfod server and the libdebuginfod client library
dev-libs/elfutils:lzma - Support automatic decompression of LZMA-compressed files and kernel images
dev-libs/elfutils:stacktrace - Build experimental eu-stacktrace tool. Relies on integration with dev-util/sysprof. See https://developers.redhat.com/articles/2024/06/11/get-system-wide-profiles-binaries-without-frame-pointers.
dev-libs/elfutils:utils - Install command-line utilities (all the eu-* programs)
dev-libs/fcgi:html - Install HTML documentation
dev-libs/folks:telepathy - Load contacts from the Telepathy framework
dev-libs/folks:utils - Build the folks-inspect utility
dev-libs/fstrm:utils - Build fstrm utility programs
dev-libs/gf2x:custom-tune - Extra long compile time for tuning hardware specific low-level routines
dev-libs/gf2x:fft - Build an FFT API for multiplication of 2 polynomials over GF(2)
dev-libs/gjs:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
dev-libs/glib:dbus - Enable dependencies required by glib libraries using dbus service to manage settings saving
dev-libs/glib:elf - Enable support for listing and extracting from ELF resource files with gresource tool
dev-libs/glib:introspection - Enable generating introspection data (requires dev-libs/gobject-introspection )
dev-libs/glib:mime - Pull in shared MIME database that many glib-based applications require at runtime to detect or open files. Warning: do not disable this flag unless installing on a headless server.
dev-libs/glib:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
dev-libs/glib:systemtap - Build support for profiling and tracing using dev-debug/systemtap
dev-libs/glib:utils - Install gtester-report utility to generate test report files for your software; build gresource utility with ELF support.
dev-libs/gmime:smime - Enable experimental S/MIME support
dev-libs/gmp:cpudetection - Enables runtime CPU detection (useful for binpkgs, compatibility on other CPUs). This only works on amd64/x86 at present. If this flag is enabled, GMP will work on a variety of amd64/x86 CPUs and load accelerated routines for use at runtime depending on the CPU in use. This makes it suitable for binary packages (binpkgs). If this flag is disabled, GMP will be tuned for the CPU being used at build-time and may not be usable on other machines.
dev-libs/gmp:pic - Force static libraries to be built as PIC to avoid TEXTRELs.
dev-libs/gobject-introspection:doctool - Install g-ir-doc-tool for generating documentation from introspected data
dev-libs/hiredict:shim - Install header shims for the hiredis api.
dev-libs/imath:large-stack - Enables code to take advantage of large stack support
dev-libs/input-pad:eekboard - Enable support for dev-libs/eekboard
dev-libs/input-pad:xtest - Enable support for x11-libs/libXtst
dev-libs/intel-compute-runtime:l0 - Install the oneAPI Level Zero driver alongside the OpenCL one
dev-libs/intel-compute-runtime:vaapi - Support the sharing of surfaces with Video Acceleration API (OpenCL Extension #36)
dev-libs/jemalloc:lazy-lock - Enable lazy locking (only lock when multi-threaded)
dev-libs/jemalloc:prof - Enable allocation profiling
dev-libs/jemalloc:stats - Enable statistics calculation/reporting
dev-libs/jemalloc:xmalloc - Add support for xmalloc (abort-on-out-of-memory)
dev-libs/json-glib:nls - Enable native language support (translations)
dev-libs/ktextaddons:designer - Build plugins for dev-qt/designer
dev-libs/libbase58:tools - Build command line base58 tool
dev-libs/libbytesize:tools - Build bscalc python CLI tool
dev-libs/libcdio:minimal - Only build the libcdio library and little more, just to be used to link against from multimedia players. With this USE flag enabled, none of the command-line utilities are built, nor is the CDDA library.
dev-libs/libcec:cubox - Enable support for enable support for the TDA995x
dev-libs/libcec:exynos - Enable support for Exynos chipsets
dev-libs/libcec:kernel-cec - Enable support for Linux kernel CEC framework
dev-libs/libcec:raspberry-pi - Enable support for the Raspberry Pi
dev-libs/libcec:tools - Enable build of cec-client and other test and demo executable tools
dev-libs/libcec:udev - Enable detection of USB-CEC port by udev
dev-libs/libcec:xrandr - Enable detection of active HDMI using xrandr extensions
dev-libs/libcgroup:daemon - Install the configuration tools and init/config files.
dev-libs/libcgroup:tools - Install the cgroup rules processing daemon and init/config files.
dev-libs/libclc:spirv - Build SPIRV targets
dev-libs/libdbusmenu:gtk - Enable support for GTK+2
dev-libs/libdbusmenu:gtk3 - Enable support for GTK+3
dev-libs/libdex:eventfd - Allow use of eventfd
dev-libs/libdex:liburing - Allow use of liburing (io_uring)sys-libs/liburing
dev-libs/libdex:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
dev-libs/libevent:clock-gettime - Disable use of clock_gettime even if it is available
dev-libs/libevent:debug - Support for running in debug mode
dev-libs/libevent:malloc-replacement - Support for replacing the memory management functions
dev-libs/libevent:mbedtls - Support for net-libs/mbedtls encryption
dev-libs/libevent:ssl - Support for dev-libs/openssl encryption
dev-libs/libevent:verbose-debug - Support for verbose debug logging
dev-libs/libffi:exec-static-trampoline - Don't rely on dynamic code generation for trampolines.
dev-libs/libffi:pax-kernel - Use PaX emulated trampolines, for we can't use PROT_EXEC
dev-libs/libffi-compat:pax-kernel - Use PaX emulated trampolines, for we can't use PROT_EXEC
dev-libs/libfido2:nfc - Enable experimental NFC support
dev-libs/libflatarray:cuda - Enables plugins for NVIDIA GPUs (e.g. CUDAAllocator)
dev-libs/libgcrypt:getentropy - Use getentropy function to obtain randomness from the kernel
dev-libs/libgdata:crypt - Use app-crypt/gcr for keeping tokens and passwords in non-pageable memory for improved security
dev-libs/libgdata:gnome-online-accounts - Enable net-libs/gnome-online-accounts support
dev-libs/libgit2:gssapi - Enable GSSAPI support for SPNEGO auth
dev-libs/libgit2:ssh - Enable SSH transport support
dev-libs/libgit2:trace - Enable tracing support
dev-libs/libgit2-glib:ssh - Enable SSH transport support
dev-libs/libgpg-error:common-lisp - Install common-lisp files
dev-libs/libgpiod:tools - Build some useful gpio tools that use libgpiod.
dev-libs/libical:glib - Enable dev-libs/glib interface support
dev-libs/libisoburn:external-filters - Allow the use of external processes as file content filters (Note: this is a potential security risk)
dev-libs/libisoburn:external-filters-setuid - Also allow the use of external setuid processes as file content filters (Note: this is a potential security risk)
dev-libs/libisoburn:frontend-optional - Use dev-tcltk/bwidget which is not strictly required for the frontend
dev-libs/libisoburn:launch-frontend - Enable the tcl gui for xorriso
dev-libs/libisoburn:launch-frontend-setuid - Enable the tcl gui for xorriso under setuid
dev-libs/libisofs:verbose-debug - Enable verbose debug messages
dev-libs/libjcat:ed25519 - Enable ED25519 verification support via dev-libs/nettle and net-libs/gnutls
dev-libs/libjcat:gpg - Enable GPG verification support via app-crypt/gpgme
dev-libs/libjcat:pkcs7 - Enable PKCS7 verification support via net-libs/gnutls
dev-libs/libjwt:openssl - Use openssl libs for crypto functions
dev-libs/liblogging:rfc3195 - Enables RFC 3195 protocol (aka syslog-reliable) support. If you don't know what this is, you don't need it!
dev-libs/liblogging:stdlog - Enables liblogging's core component (think of it as a the next version of the syslog(3) API).
dev-libs/libmemcached:hsieh - Use Hsieh hash algorithm.
dev-libs/libmemcached:libevent - Use the libevent event loop interface.
dev-libs/libmemcached:sasl - Use sasl auth for communications.
dev-libs/libmemcached-awesome:libevent - Use the libevent event loop interface.
dev-libs/libmemcached-awesome:sasl - Use sasl auth for communications.
dev-libs/libnfc:pcsc-lite - Enable NFC drivers that require pcsc-lite
dev-libs/libnl:python - Install experimental dev-lang/python bindings
dev-libs/libnl:utils - Install command line interface utils
dev-libs/liborcus:spreadsheet-model - Enable the spreadsheet model implementation
dev-libs/liborcus:tools - Build various low-level parsers
dev-libs/libowfat:diet - Compile against dev-libs/dietlibc
dev-libs/libp11:doc - Generate and install API documentation for the package.
dev-libs/libpcre:bzip2 - Add support for pcregrep command to search within bzip2-compressed files (via app-arch/bzip2).
dev-libs/libpcre:pcre16 - Build PCRE library for 16 bit characters (e.g. UTF-16).
dev-libs/libpcre:pcre32 - Build PCRE library for 32 bit characters (e.g. UTF-32).
dev-libs/libpcre:readline - Add support for command line editing to pcretest, through sys-libs/readline.
dev-libs/libpcre:zlib - Add support for pcregrep command to search within gzip-compressed files (via sys-libs/zlib).
dev-libs/libpcre2:bzip2 - Add support for pcregrep command to search within bzip2-compressed files (via app-arch/bzip2).
dev-libs/libpcre2:pcre16 - Build PCRE library for 16 bit characters (e.g. UTF-16).
dev-libs/libpcre2:pcre32 - Build PCRE library for 32 bit characters (e.g. UTF-32).
dev-libs/libpcre2:readline - Add support for command line editing to pcretest, through sys-libs/readline.
dev-libs/libpcre2:zlib - Add support for pcregrep command to search within gzip-compressed files (via sys-libs/zlib).
dev-libs/libpeas:glade - Install the glade catalog
dev-libs/libpeas:python - Build support for loading dev-lang/python plugins
dev-libs/libpy:sparsehash - Include libpy wrappers for dev-cpp/sparsehash
dev-libs/librdkafka:lz4 - Enable support for Kafka's LZ4 compression based on KIP-57 (uses app-arch/lz4)
dev-libs/librelp:gnutls - Use GnuTLS
dev-libs/librelp:openssl - Use OpenSSL
dev-libs/libsecp256k1:ecdh - Enable ECDH shared secret computation
dev-libs/libsecp256k1:ellswift - Enable ElligatorSwift encoding for public keys
dev-libs/libsecp256k1:endomorphism - Enable endomorphism
dev-libs/libsecp256k1:experimental - Allow experimental USE flags
dev-libs/libsecp256k1:extrakeys - Enable extrakeys module
dev-libs/libsecp256k1:lowmem - Reduce runtime memory usage at the expense of performance (ecmult window size 4, gen precision 2)
dev-libs/libsecp256k1:recovery - Enable ECDSA pubkey recovery module
dev-libs/libsecp256k1:schnorr - Enable Schnorr signature module
dev-libs/libsecp256k1:test-openssl - Enable OpenSSL comparison tests
dev-libs/libslz:tools - Install additional tools (zenc, zdec)
dev-libs/libsodium:urandom - Use /dev/urandom instead of /dev/random
dev-libs/libtermkey:demos - Install demos, which pulls in dev-libs/glib
dev-libs/libtomcrypt:libtommath - Uses dev-libs/libtommath for mathematical operations
dev-libs/libtomcrypt:tomsfastmath - Uses dev-libs/tomsfastmath for mathematical operations
dev-libs/libucl:regex - Enable regex support
dev-libs/libucl:sign - Enable signatures check
dev-libs/libucl:urls - Enable URLs fetch
dev-libs/libucl:utils - Install utils for checking other configs
dev-libs/libunibreak:doc - Install html API documentation.
dev-libs/libverto:glib - Support event loops using dev-libs/glib
dev-libs/libverto:libev - Support event loops using dev-libs/libev
dev-libs/libverto:libevent - Support event loops using dev-libs/libevent
dev-libs/libvoikko:expvfst - Enable experimental features of VFST morphology backend
dev-libs/libvoikko:hfst - Enable HFST morphology backend
dev-libs/libxlsxwriter:openssl - Use dev-libs/openssl for MD5 digest
dev-libs/libxmlb:stemmer - Enable language stemming support
dev-libs/libzia:ftdi - Enable support for FTDI USB chips
dev-libs/libzip:mbedtls - Use net-libs/mbedtls as TLS provider
dev-libs/libzip:tools - Install binary tools to compare, modify and merge zip files
dev-libs/link-grammar:aspell - Adds support for app-text/aspell spell checker
dev-libs/link-grammar:hunspell - Adds support for app-text/hunspell spell checker
dev-libs/log4cplus:explicit-initialization - Require explicit initialization
dev-libs/log4cplus:iconv - Use inconv for wchar_t <-> char conversions. See also log4cplus's unicode.txt documentation
dev-libs/log4cplus:server - Build the logging server
dev-libs/log4cxx:smtp - Offer SMTP support via net-libs/libesmtp
dev-libs/m17n-lib:X - Build the Graphical User Interface API and utilities
dev-libs/m17n-lib:anthy - Enable support for app-i18n/anthy input method
dev-libs/m17n-lib:athena - Enable the MIT Athena widget set (x11-libs/libXaw)
dev-libs/m17n-lib:gd - Build API and utilities based on media-libs/gd. This flag is only meaningful if the X USE flag is also enabled
dev-libs/m17n-lib:libotf - Use dev-libs/libotf to handle OpenType fonts
dev-libs/m17n-lib:libxml2 - Use dev-libs/libxml2 to parse XML
dev-libs/mimalloc:hardened - Enable exploit mitigations
dev-libs/modsecurity:fuzzyhash - Support fuzzy hash computations (to detect malware, for example) using the app-crypt/ssdeep package.
dev-libs/modsecurity:geoip2 - Pull in dev-libs/libmaxminddb for use by the SecGeoLookupDb directive.
dev-libs/modsecurity:json - Suppose JSON in the request body parser through dev-libs/yajl.
dev-libs/modsecurity:lmdb - Add LMDB backend support
dev-libs/modsecurity:pcre2 - Use dev-libs/libpcre2 as regex implementation
dev-libs/ncnn:tools - Enable installation of various tools in addition to the library
dev-libs/nss:cacert - Include root/class3 certs from CAcert (https://www.cacert.org/)
dev-libs/nss:test-full - Run all available tests, instead of the standard set only
dev-libs/nss:utils - Compile and install all extra binaries, such as certutil, modutil and few more
dev-libs/nwjs:ffmpeg-chromium - Use Chromium FFmpeg fork (media-video/ffmpeg-chromium) rather than mainline FFmpeg (media-video/ffmpeg)
dev-libs/oneDNN:cblas - Use virtual/cblas for sgemm routines
dev-libs/oneDNN:mkl - Use sci-libs/mkl for sgemm routines
dev-libs/onigmo:combination-explosion-check - enable combination explosion check
dev-libs/onigmo:crnl-as-line-terminator - enable CR+NL as line terminator
dev-libs/oniguruma:crnl-as-line-terminator - Enable CR+NL as line terminator
dev-libs/opencryptoki:tpm - Enable support for Trusted Platform Module (TPM) using app-crypt/trousers
dev-libs/openct:debug - Add debug output to the driver library for pcsc-lite.
dev-libs/openct:pcsc-lite - Build a driver library for sys-apps/pcsc-lite, providing PC/SC API access to devices supported by OpenCT.
dev-libs/openobex:irda - Enable IrDA support
dev-libs/opensc:ctapi - Use CT-API for accessing Smartcard hardware
dev-libs/opensc:notify - Enable notifications
dev-libs/opensc:openct - Use dev-libs/openct (and CT-API) for accessing Smartcard hardware
dev-libs/opensc:pace - Use dev-libs/openpace for EAC version 2 support
dev-libs/opensc:pcsc-lite - Use sys-apps/pcsc-lite (and PC/SC API) for accessing Smartcard hardware
dev-libs/opensc:secure-messaging - Enable secure messaging
dev-libs/openssl:bindist - Disable/Restrict EC algorithms (as they seem to be patented) -- note: changes the ABI
dev-libs/openssl:fips - Enable FIPS provider
dev-libs/openssl:ktls - Enable support for Kernel implementation of TLS (kTLS)
dev-libs/openssl:quic - Enable support for QUIC (RFC 9000); a UDP-based protocol intended to replace TCP
dev-libs/openssl:rfc3779 - Enable support for RFC 3779 (X.509 Extensions for IP Addresses and AS Identifiers)
dev-libs/openssl:sslv2 - Support for the old/insecure SSLv2 protocol -- note: not required for TLS/https
dev-libs/openssl:sslv3 - Support for the old/insecure SSLv3 protocol -- note: not required for TLS/https
dev-libs/openssl:tls-compression - Enable support for discouraged TLS compression
dev-libs/openssl:tls-heartbeat - Enable the Heartbeat Extension in TLS and DTLS
dev-libs/openssl:weak-ssl-ciphers - Build support for SSL/TLS ciphers that are considered "weak"
dev-libs/openssl-compat:bindist - Disable/Restrict EC algorithms (as they seem to be patented) -- note: changes the ABI
dev-libs/openssl-compat:rfc3779 - Enable support for RFC 3779 (X.509 Extensions for IP Addresses and AS Identifiers)
dev-libs/openssl-compat:sslv2 - Support for the old/insecure SSLv2 protocol -- note: not required for TLS/https
dev-libs/openssl-compat:sslv3 - Support for the old/insecure SSLv3 protocol -- note: not required for TLS/https
dev-libs/openssl-compat:tls-compression - Enable support for discouraged TLS compression
dev-libs/openssl-compat:tls-heartbeat - Enable the Heartbeat Extension in TLS and DTLS
dev-libs/openssl-compat:weak-ssl-ciphers - Build support for SSL/TLS ciphers that are considered "weak"
dev-libs/optix:headers-only - Download and install only the header files
dev-libs/pkcs11-helper:nss - Enable NSS crypto engine
dev-libs/pocl:accel - Enable the generic hardware accelerator device driver
dev-libs/pocl:conformance - Ensures that certain build options which would result in non-conformant pocl build stay disabled. Note that this does not quarantee a fully conformant build of pocl.
dev-libs/pocl:float-conversion - When enabled, OpenCL printf() call's f/e/g formatters are handled by pocl. When disabled, these are handled by system C library.
dev-libs/pocl:hardening - Enable hardening against various attacks. May worsen performance
dev-libs/pocl:hwloc - Enable hwloc support
dev-libs/pocl:memmanager - Enables custom memory manager. Except for special circumstances, this should be disabled
dev-libs/poco:7z - Add Support for the 7z archive format
dev-libs/poco:activerecord - Add ActiveRecord support
dev-libs/poco:cppparser - Build and install a minimal C++ parser
dev-libs/poco:data - Database abstraction layer to easily send/retrieve data to/from various databases
dev-libs/poco:file2pagecompiler - Utility to convert ordinary files to Page Compiler source files
dev-libs/poco:json - Add JSON support
dev-libs/poco:jwt - Add JSON Web Token support
dev-libs/poco:mariadb - Prefer dev-db/mariadb-connector-c over dev-db/mysql-connector-c
dev-libs/poco:mongodb - Add dev-db/mongodb support
dev-libs/poco:net - Classes to write network clients & servers
dev-libs/poco:pagecompiler - Simple compiler translating HTML pages containing embedded C++ code into HTTPRequestHandler classes
dev-libs/poco:pocodoc - POCO documentation generator
dev-libs/poco:prometheus - Add prometheus monitoring system support
dev-libs/poco:ssl - Encryption and digital signing classes
dev-libs/poco:util - Several utility classes (like logger, timer, config file parser)
dev-libs/poco:zip - Add support for the zip & gz archive formats
dev-libs/ppl:cdd - Build the ppl_lcdd program for vertex/facet enumeration accepting the same input format as the programs shipped with sci-libs/cddlib and sci-libs/lrslib
dev-libs/ppl:lpsol - Build the ppl_lpsol linear program solver that uses sci-mathematics/glpk for its input routines
dev-libs/protobuf:conformance - Build conformance tests
dev-libs/protobuf:libprotoc - Build libprotoc
dev-libs/protobuf:libupb - Build libupb
dev-libs/protobuf:protobuf - Build protobuf libraries and protoc compiler
dev-libs/protobuf:protoc - Build libprotoc and protoc compiler
dev-libs/qcoro:network - Build dev-qt/qtbase network support
dev-libs/qcoro:qml - Enable QML/QtQuick support via dev-qt/qtdeclarative
dev-libs/qcoro:websockets - Build dev-qt/qtwebsockets support
dev-libs/qcoro5:network - Build dev-qt/qtnetwork support
dev-libs/qcoro5:qml - Enable QML/QtQuick support via dev-qt/qtdeclarative
dev-libs/qcoro5:testlib - Install coroutine-friendly versions of dev-qt/qttest macros
dev-libs/qcoro5:websockets - Build dev-qt/qtwebsockets support
dev-libs/qhotkey:qt6 - Use Qt6 dependencies
dev-libs/quazip:qt5 - Build with Qt5 support
dev-libs/quazip:qt6 - Build with Qt6 support
dev-libs/raft:zfs - ZFS support
dev-libs/re2:benchmark - Build a benchmark binary, install it as re2-bench
dev-libs/re2:test-full - Run additional, quite slow tests
dev-libs/rocksdb:numa - Enable NUMA support
dev-libs/rocksdb:tbb - Enable support for dev-cpp/tbb
dev-libs/sentry-native:breakpad - Use dev-util/breakpad as the crash handler
dev-libs/sentry-native:curl - Enable support for automated uploading of crash reports
dev-libs/serd:tools - Build command line utilities
dev-libs/serdisplib:tools - Build optional tools.
dev-libs/sexpp:cli - Build sexp console application
dev-libs/simdjson:all-impls - Enable all implementations rather than only onem
dev-libs/simdjson:tools - Build and install extra command line tools
dev-libs/softhsm:gost - Enable gost algorithm
dev-libs/softhsm:migration-tool - Build db migration tool
dev-libs/sord:tools - Build command line utilities
dev-libs/starpu:gcc-plugin - Enable GCC extension plugin (experimental)
dev-libs/starpu:spinlock-check - Enable spinlock check
dev-libs/thrift:libevent - Build support for dev-libs/libevent
dev-libs/tinyxml:stl - Compile with TIXML_USE_STL support
dev-libs/tntnet:server - Enable tntnet server daemon
dev-libs/totem-pl-parser:archive - Enables ISO detection with app-arch/libarchive
dev-libs/totem-pl-parser:crypt - Support AmazonAMZ decoding with dev-libs/libgcrypt
dev-libs/totem-pl-parser:uchardet - Enable charset discovery via app-i18n/uchardet
dev-libs/tre:agrep - Build agrep tool
dev-libs/tre:alloca - Enable if you want TRE to use alloca() instead of malloc() when allocating memory needed for regexec operations
dev-libs/tre:approx - Enable the approximate matching functionality
dev-libs/uriparser:unicode - Add support for functions working with character type wchar_t (e.g. uriParseSingleUriW with trailing "W") which increases compile time and resulting binary file size by roughly factor 2.
dev-libs/weston:desktop - Enable the desktop shell
dev-libs/weston:drm - Enable drm compositor support
dev-libs/weston:editor - Install wayland-editor example application
dev-libs/weston:fullscreen - Enable fullscreen shell
dev-libs/weston:gles2 - Enable the GLESv2 renderer, not just the x11-libs/pixman-based software fallback
dev-libs/weston:headless - Headless backend and a noop renderer, mainly for testing purposes
dev-libs/weston:ivi - Enable the IVI shell
dev-libs/weston:kiosk - Enable the kiosk shell
dev-libs/weston:pipewire - Enable virtual remote output with Pipewire on DRM backend
dev-libs/weston:rdp - Enable Remote Desktop Protocol compositor support
dev-libs/weston:remoting - Enable plugin to stream output to remote hosts using media-libs/gstreamer
dev-libs/weston:resize-optimization - Increase performance, allocate more RAM. Recommended to disable on Raspberry Pi
dev-libs/weston:screen-sharing - Enable screen-sharing through RDP
dev-libs/weston:wayland-compositor - Enable Wayland compositor support
dev-libs/weston:xwayland - Enable ability support native X11 applications
dev-libs/xerces-c:iconv - Use iconv (virtual/libiconv) as message loader and transcoder (in general it would be possible to use iconv only as message loader and something else like icu or the native method as transcoder and vice-versa, but this is a less common case and hard to handle)
dev-libs/xerces-c:threads - Enable threading support through pthread (or other libraries on AIX, IRIX, HPUX, Solars). Highly recommended
dev-libs/xmlrpc-c:abyss - Build the Abyss mini web-server.
dev-libs/xmlrpc-c:libxml2 - Use dev-libs/libxml2 to parse XML instead of the internal expat library.
dev-libs/xmlrpc-c:threads - Controls whether to build the Abyss web-server with pthreads or fork 'threading'.
dev-libs/xmlsec:gcrypt - Install xmlsec-gcrypt library
dev-libs/xmlsec:gnutls - Install xmlsec-gnutls library
dev-libs/xmlsec:http - Allow fetching over HTTP via libxml2.
dev-libs/xmlsec:nss - Install xmlsec-nss library
dev-libs/xmlsec:openssl - Install xmlsec-openssl library
dev-libs/yaz:ziffy - Install ziffy, a promiscuous Z39.50 APDU sniffer
dev-lisp/clisp:hyperspec - Use local hyperspec instead of online version
dev-lisp/clisp:svm - Build CLISP with support for the Support Vector Machine module
dev-lisp/clx:doc - Builds documentation
dev-lisp/cmucl:doc - Installs package documentation
dev-lisp/cmucl:gui - Build CLX, CLM, or Hemlock
dev-lisp/cmucl:source - Include source code for CMUCL in installation
dev-lisp/ecl:gengc - Use generational garbage collection (experimental)
dev-lisp/ecl:precisegc - Use type information during garbage collection (experimental)
dev-lisp/ecl:unicode - Make the produced lisp support unicode
dev-lisp/gcl:ansi - Build a GCL with ANSI support (else build a traditional CLtL1 image)
dev-lisp/gcl:athena - Build xgcl - an interface to x11-libs/libXaw
dev-lisp/sbcl:system-bootstrap - Bootstrap SBCL using either system SBCL installation or dev-lisp/clisp
dev-lisp/sbcl:unicode - Make the produced lisp support unicode
dev-lua/lua-cjson:internal-fpconv - Enable internal number conversion routines, can increase overall performance by up to 50%
dev-ml/lablgtk:glade - Enable gnome-base/libglade bindings compilation
dev-ml/lablgtk:gnomecanvas - Enable gnome-base/libgnomecanvas bindings compilation
dev-ml/lablgtk:sourceview - Enable GtkSourceView (x11-libs/gtksourceview) support
dev-ml/logs:cli - Enables the Logs_cli library that provides command line support for controlling Logs.
dev-ml/logs:fmt - Enables the Logs_fmt reporter.
dev-ml/logs:lwt - Enables the Logs_lwt library that provides Lwt logging functions.
dev-ml/ocaml-fileutils:ocamlopt - Whether the OCaml native code compiler is used. Must be set globally and match dev-lang/ocaml.
dev-ml/ocaml-gettext:ocamlopt - Whether the OCaml native code compiler is used. Must be set globally and match dev-lang/ocaml.
dev-ml/ocaml-gettext-camomile:ocamlopt - Whether the OCaml native code compiler is used. Must be set globally and match dev-lang/ocaml.
dev-ml/ocaml-gettext-stub:ocamlopt - Whether the OCaml native code compiler is used. Must be set globally and match dev-lang/ocaml.
dev-ml/ocamlnet:httpd - Enables net-httpd web server component
dev-ml/ocamlnet:zip - Enables netzip support to read/write gzip data using object channels
dev-ml/stdlib-shims:ocamlopt - Whether the OCaml native code compiler is used. Must be set globally and match dev-lang/ocaml.
dev-ml/tiny_httpd:camlzip - Interface to camlzip for tiny_httpd
dev-ml/uutf:utftrip - Builds and install the utftrip executable: Among other things, reads unicode on stdin and rewrites it on stdout.
dev-perl/App-Nopaste:browser - Spawn browser with pasted page
dev-perl/App-Nopaste:clipboard - copying of URLs with -x/--copy
dev-perl/App-Nopaste:gitlab - Ensure git is installed for reading/passing GitLab authentication
dev-perl/App-Nopaste:pastebin - pastebin.com support
dev-perl/Boulder:genbank - Provide support with Boulder::Genbank for decoding Genbank data records
dev-perl/Boulder:store - Provide support with Boulder::Store for persisting Stone objects
dev-perl/Business-ISBN:barcode - Install dev-perl/GD-Barcode for rendering ISBN numbers as barcodes
dev-perl/Config-Any:conf - Install dev-perl/Config-General to support decoding .conf/.cnf files
dev-perl/Config-Any:ini - Install dev-perl/Config-Tiny to support decoding INI config files
dev-perl/Config-Any:json - Install support libraries to support decoding JSON config files
dev-perl/Config-Any:xml - Install support libraries to support decoding XML config files
dev-perl/Config-Any:yaml - Install support libraries to support decoding YAML config files
dev-perl/Cookie-Baker:xs - Install dev-perl/Cookie-Baker-XS for accelerated performance
dev-perl/Coro:ev - Build support for using dev-perl/EV as an event-loop via Coro::EV
dev-perl/Coro:event - Build support for using dev-perl/Event as an event-loop via Coro::Event
dev-perl/DBD-MariaDB:mariadb - Use dev-db/mariadb-connector-c as the client library
dev-perl/DBD-MariaDB:mysql - Use dev-db/mysql-connector-c as the client library
dev-perl/DBD-SQLite:system-sqlite - Use the system-wide dev-db/sqlite installation
dev-perl/DBD-mysql:mariadb - Use dev-db/mariadb-connector-c as the client library
dev-perl/DBD-mysql:mysql - Use dev-db/mysql-connector-c as the client library
dev-perl/DBD-mysql:ssl - Compile in support for SSL connections via libmysqlclient
dev-perl/DBIx-Class:admin - Modules required for the DBIx::Class administrative library
dev-perl/DBIx-Class:admin-script - Modules required for the CLI DBIx::Class interface dbicadmin
dev-perl/DBIx-Class:deploy - Modules required for "deploy" in DBIx::Class::Storage::DBI and "deploymen_statements" in DBIx::Class::Storage::DBI
dev-perl/DBIx-Class:replicated - Modules required for DBIx::Class::Storage::DBI::Replicated
dev-perl/File-HomeDir:xdg - Ensure XDG Semantics for returned paths via x11-misc/xdg-user-dirs
dev-perl/File-Which:pwhich - Install dev-perl/App-pwhich which used to be a part of this package
dev-perl/GD:animgif - Enable animated gif support
dev-perl/GD:fcgi - Build for FastCGI compatibility via dev-libs/fcgi instead of using PerlIO
dev-perl/HTML-Mason:modperl - Enable www-apache/mod_perl support
dev-perl/HTTP-Entity-Parser:xs - Install C-Based dependieces for faster performance
dev-perl/JSON:xs - Install C-based dev-perl/JSON-XS for faster performance
dev-perl/JSON-MaybeXS:xs - Install a C-Based backend to make JSON encode/decode fast
dev-perl/List-MoreUtils:xs - Install C-Based backend implementation for performance
dev-perl/MCE:sereal - Install dev-perl/Sereal-Encoder and decoder for faster worker IPC
dev-perl/Mail-IMAPClient:md5 - Install support for DIGEST-MD5 and CRAM-MD5 Authentication
dev-perl/Mail-IMAPClient:ntlm - Install support for NTLM Authentication
dev-perl/Mail-IMAPClient:ssl - Install support for SSL Connections
dev-perl/Mail-IMAPClient:zlib - Install support for COMPRESS DEFLATE connections
dev-perl/Net-SSH2:gcrypt - Use libgcrypt instead of openssl
dev-perl/PDL:badval - Enable bad values support
dev-perl/PDL:hdf - Enable HDF (version 4) format support
dev-perl/PDL:netpbm - Enable NETPBM and MPEG support
dev-perl/PDL:pdl2 - Build pdf2 shell (requires Devel-REPL)
dev-perl/PDL:pgplot - Enable PGPLOT plotting capabilities
dev-perl/Ref-Util:xs - Install C-Based dev-perl/Ref-Util-XS for accelerated performance
dev-perl/Sub-Name:suggested - Install extra dependencies needed for extended regression tests
dev-perl/Sysadm-Install:hammer - Enable hammer() funtion to run a command in the shell and simulate a user hammering the ENTER key to accept defaults on prompts
dev-perl/Test-Warnings:suggested - Install optional dependencies for extra tests
dev-perl/Text-CSV:xs - Install dev-perl/Text-CSV_XS for accelerated decoding
dev-perl/WWW-Form-UrlEncoded:xs - Install C-Based dependieces for faster performance
dev-perl/perl-headers:debug - Add source locations in generated .ph files to assist with debugging when errors occur
dev-perl/perl-headers:sizeof-warning - Include logic to warn when a .ph file tries to use a sizeof() that is unknown
dev-php/maxmind-db-reader:extension - Build the C extension that uses dev-libs/libmaxminddb
dev-php/pecl-apcu:lock-pthreadmutex - Enable pthread mutex locking
dev-php/pecl-apcu:lock-pthreadrw - Enable pthread read/write locking
dev-php/pecl-apcu:lock-semaphore - Enable semaphore locks instead of fcntl
dev-php/pecl-apcu:lock-spinlock - Enable spin locks (EXPERIMENTAL)
dev-php/pecl-event:extra - Add support of the Libevent extra API
dev-php/pecl-memcached:igbinary - Enable support for the igbinary serializer
dev-php/pecl-memcached:json - Enable support for json serialization
dev-php/pecl-redis:igbinary - Enables igbinary serialisation support
dev-php/pecl-redis:json - Enables json serializer support
dev-python/PyQt5:bluetooth - Build bindings for the QtBluetooth module
dev-python/PyQt5:dbus - Build bindings for the QtDBus module
dev-python/PyQt5:declarative - Build bindings for the QtQml and QtQuick modules and enable the qmlscene plugin
dev-python/PyQt5:designer - Build bindings for the QtDesigner module and enable the designer plugin
dev-python/PyQt5:gui - Build bindings for the QtGui module
dev-python/PyQt5:help - Build bindings for the QtHelp module
dev-python/PyQt5:location - Build bindings for the QtLocation module
dev-python/PyQt5:multimedia - Build bindings for the QtMultimedia module
dev-python/PyQt5:network - Build bindings for the QtNetwork module
dev-python/PyQt5:opengl - Build bindings for the QtOpenGL module
dev-python/PyQt5:positioning - Build bindings for the QtPositioning module
dev-python/PyQt5:printsupport - Build bindings for the QtPrintSupport module
dev-python/PyQt5:sensors - Build bindings for the QtSensors module
dev-python/PyQt5:serialport - Build bindings for the QtSerialPort module
dev-python/PyQt5:speech - Build bindings for the QtTextToSpeech module
dev-python/PyQt5:sql - Build bindings for the QtSql module
dev-python/PyQt5:svg - Build bindings for the QtSvg module
dev-python/PyQt5:testlib - Build bindings for the QtTest module
dev-python/PyQt5:webchannel - Build bindings for the QtWebChannel module
dev-python/PyQt5:websockets - Build bindings for the QtWebSockets module
dev-python/PyQt5:widgets - Build bindings for the QtWidgets module
dev-python/PyQt5:x11extras - Build bindings for the QtX11Extras module
dev-python/PyQt5:xmlpatterns - Build bindings for the QtXmlPatterns module
dev-python/PyQt6:bluetooth - Build bindings for the QtBluetooth module
dev-python/PyQt6:dbus - Build bindings for the QtDBus module
dev-python/PyQt6:designer - Build bindings for the QtDesigner module and enable the designer plugin
dev-python/PyQt6:gui - Build bindings for the QtGui module
dev-python/PyQt6:help - Build bindings for the QtHelp module
dev-python/PyQt6:multimedia - Build bindings for the QtMultimedia module
dev-python/PyQt6:network - Build bindings for the QtNetwork module
dev-python/PyQt6:nfc - Build bindings for the QtNfc module
dev-python/PyQt6:opengl - Build bindings for the QtOpenGL module
dev-python/PyQt6:pdfium - Build bindings for the QtPdf module (uses pdfium from dev-qt/qtwebengine)
dev-python/PyQt6:positioning - Build bindings for the QtPositioning module
dev-python/PyQt6:printsupport - Build bindings for the QtPrintSupport module
dev-python/PyQt6:qml - Build bindings for the QtQml module and enable the qml plugin
dev-python/PyQt6:quick - Build bindings for the QtQuick module
dev-python/PyQt6:quick3d - Build bindings for the QtQuick3D module
dev-python/PyQt6:remoteobjects - Build bindings for the QtRemoteObjects module
dev-python/PyQt6:sensors - Build bindings for the QtSensors module
dev-python/PyQt6:serialport - Build bindings for the QtSerialPort module
dev-python/PyQt6:spatialaudio - Build bindings for the QtSpatialAudio module
dev-python/PyQt6:speech - Build bindings for the QtTextToSpeech module
dev-python/PyQt6:sql - Build bindings for the QtSql module
dev-python/PyQt6:svg - Build bindings for the QtSvg module
dev-python/PyQt6:testlib - Build bindings for the QtTest module
dev-python/PyQt6:webchannel - Build bindings for the QtWebChannel module
dev-python/PyQt6:websockets - Build bindings for the QtWebSockets module
dev-python/PyQt6:widgets - Build bindings for the QtWidgets module
dev-python/PyQt6:xml - Build bindings for the QtXml module
dev-python/PyQt6-WebEngine:quick - Build bindings for the QtWebEngineQuick module
dev-python/PyQt6-WebEngine:widgets - Build bindings for the QtWebEngineWidgets module
dev-python/QtPy:designer - Pull in bindings for the QtDesigner module and enable the designer plugin
dev-python/QtPy:gui - Pull in bindings for the QtGui module
dev-python/QtPy:help - Pull in bindings for the QtHelp module
dev-python/QtPy:multimedia - Pull in QtMultimedia and QtMultimediaWidgets modules
dev-python/QtPy:network - Pull in bindings for the QtNetwork module
dev-python/QtPy:opengl - Pull in bindings for the QtOpenGL module
dev-python/QtPy:positioning - Pull in bindings for the QtPositioning module
dev-python/QtPy:printsupport - Pull in bindings for the QtPrintSupport module
dev-python/QtPy:pyqt5 - Use dev-python/PyQt5 as Qt for Python implementation
dev-python/QtPy:pyqt6 - Use dev-python/PyQt6 as Qt for Python implementation
dev-python/QtPy:pyside2 - Use dev-python/pyside2 as Qt for Python implementation
dev-python/QtPy:pyside6 - Use dev-python/pyside6 as Qt for Python implementation
dev-python/QtPy:qml - Build bindings for the QtQml
dev-python/QtPy:quick - Build bindings for the QtQuick
dev-python/QtPy:sensors - Pull in bindings for the QtSensors module
dev-python/QtPy:serialport - Pull in bindings for the QtSerialPort module
dev-python/QtPy:speech - Pull in bindings for the QtTextToSpeech module
dev-python/QtPy:sql - Pull in bindings for the QtSql module
dev-python/QtPy:svg - Pull in bindings for the QtSvg module
dev-python/QtPy:testlib - Pull in bindings for the QtTest module
dev-python/QtPy:webchannel - Pull in bindings for the QtWebChannel module
dev-python/QtPy:webengine - Pull in QtWebEngine and QtWebEngineWidgets modules
dev-python/QtPy:websockets - Pull in bindings for the QtWebSockets module
dev-python/QtPy:widgets - Pull in bindings for the QtWidgets module
dev-python/QtPy:xml - Pull in QtXml module
dev-python/amqp:extras - Install extra tools to generate initial Python mod from an AMQP XML file
dev-python/apprise:dbus - Support sending notifications to the desktop over D-Bus
dev-python/apprise:mqtt - Support sending notifications over MQTT
dev-python/autobahn:xbr - Add support for XBR decentralized data markets and etherium blockchain
dev-python/blake3:rust - Build the Rust implementation (if disabled, the "experimental" C implementation is used instead).
dev-python/bpython:clipboard - Enable copying to clipboard using dev-python/pyperclip
dev-python/bpython:jedi - Enable autocompletion using dev-python/jedi
dev-python/bpython:watch - Enable watching paths using dev-python/watchdog
dev-python/cbor2:native-extensions - Compiles native "C" extensions (speedups, instead of using python fallback code).
dev-python/cvxopt:dsdp - Use interior point library sci-libs/dsdp
dev-python/cvxopt:glpk - Use GNU Linear Programming Kit sci-mathematics/glpk
dev-python/dnspython:dnssec - Use dev-python/cryptography to enable low-level DNSSEC RSA, DSA, ECDSA and EdDSA signature validation.
dev-python/editorconfig:cli - Install command line interface as well as python library
dev-python/fritzconnection:qrcode - Install dependencies needed to generate QR Codes for WiFi login.
dev-python/frozenlist:native-extensions - Compile native C extensions (speedups, instead of using Python fallback code).
dev-python/google-api-core:grpc - Pull (heavy) gRPC dependencies in, that are optionally required by part of the API.
dev-python/httpx:cli - Install the CLI "httpx" client.
dev-python/hypothesis:cli - Install a CLI tool used to write tests.
dev-python/icalendar:doc - Generate examples and other extra documentation
dev-python/immutables:native-extensions - Compiles native "C" extensions (speedups, instead of using Python fallback code).
dev-python/ipython:nbconvert - Enable support for converting notebooks to various formats using app-text/pandoc
dev-python/ipython:notebook - Install requirements for the web notebook based on dev-python/tornado
dev-python/markdown-exec:ansi - Enable support for rendering ANSI colours in HTML code blocks
dev-python/matplotlib:excel - Pull dev-python/xlwt for the exceltools toolkit
dev-python/matplotlib:gtk3 - Enable x11-libs/gtk+:3 support
dev-python/matplotlib:webagg - Enable webagg backend that uses dev-python/tornado
dev-python/mido:portmidi - Support using media-libs/portmidi as MIDI back-end
dev-python/mido:rtmidi - Support using media-libs/rtmidi as MIDI back-end
dev-python/mkdocs-material:social - Install the dependencies of the "social" plugin.
dev-python/msgpack:native-extensions - Compiles native "C" extensions (speedups, instead of using python fallback code).
dev-python/multidict:native-extensions - Compile native C extensions (speedups, instead of using Python fallback code).
dev-python/mypy:native-extensions - Compiles native C extensions (speedups, instead of using Python fallback code).
dev-python/netcdf4:blosc - Allow using blosc compression via dev-libs/c-blosc
dev-python/pandas:full-support - Pull all packages to give pandas full support
dev-python/paramiko:server - Enable server feature
dev-python/peewee:native-extensions - Compiles native C extension for more complete SQLite3 support.
dev-python/pillow:imagequant - Build with Image Quantization Library support
dev-python/pivy:quarter - Use media-libs/quarter for GUI bindings
dev-python/pivy:soqt - Use media-libs/SoQt for GUI bindings
dev-python/pyarrow:parquet - Enables read/write parquet data format
dev-python/pyglet:image - Enable support for image formats other than PNG and BMP
dev-python/pymongo:native-extensions - Compiles native C extensions
dev-python/pymongo:test-full - Run test suite in full, including tests that run a local database instance.
dev-python/pyopengl-accelerate:numpy - Building NumPy native format handlers.
dev-python/pypax:ptpax - Enable PT_PAX_FLAGS support.
dev-python/pypax:xtpax - Enable XATTR_PAX_FLAGS support.
dev-python/pypy:full-stdlib - Install complete stdlib as necessary to use PyPy for general purpose programs. By default, only a limited subset that is used when building PyPy3 executables is installed. Note that PyPy2.7's stdlib contains multiple known vulnerabilities.
dev-python/pypy-exe:low-memory - Build using PyPy with the engine configured towards low memory footprint. This makes it possible to build PyPy using ~3.5G of RAM on amd64 and ~half of that on x86, at the cost of lengthened build time.
dev-python/pypy3:test-install - Install the test suite packages, that are required to run tests in a few reverse dependencies.
dev-python/pypy3_10:ensurepip - Install the ensurepip module that uses bundled wheels to bootstrap pip and setuptools (if disabled, it will be only possible to use venv `--without-pip`)
dev-python/pypy3_10:test-install - Install the test suite packages, that are required to run tests in a few reverse dependencies.
dev-python/pypy3_10-exe:low-memory - Build using PyPy with the engine configured towards low memory footprint. This makes it possible to build PyPy using ~3.5G of RAM on amd64 and ~half of that on x86, at the cost of lengthened build time.
dev-python/pyrsistent:native-extensions - Compiles native C extensions (speedups, instead of using python fallback code).
dev-python/pyside2:3d - Build Qt3DCore, Qt3DAnimation, Qt3DExtras, Qt3DInput, Qt3DLogic, and Qt3DRender modules
dev-python/pyside2:charts - Build QtCharts module
dev-python/pyside2:concurrent - Build QtConcurrent module
dev-python/pyside2:datavis - Build QtDataVisualization module
dev-python/pyside2:designer - Build QtDesigner and QtUiTools modules
dev-python/pyside2:gles2-only - Build QtGui "QOpenGL*" classes
dev-python/pyside2:gui - Build QtGui module
dev-python/pyside2:help - Build QtHelp module
dev-python/pyside2:location - Build QtLocation module
dev-python/pyside2:multimedia - Build QtMultimedia and QtMultimediaWidgets modules
dev-python/pyside2:network - Build QtNetwork module
dev-python/pyside2:positioning - Build QtPositioning module
dev-python/pyside2:printsupport - Build QtPrintSupport module
dev-python/pyside2:qml - Build QtQml module
dev-python/pyside2:quick - Build QtQuick and QtQuickWidgets modules
dev-python/pyside2:scxml - Build QtScxml module
dev-python/pyside2:sensors - Build QtSensors module
dev-python/pyside2:speech - Build QtTextToSpeech module
dev-python/pyside2:sql - Build QtSql module
dev-python/pyside2:svg - Build QtSvg module
dev-python/pyside2:testlib - Build QtTest module
dev-python/pyside2:webchannel - Build QtWebChannel module
dev-python/pyside2:webengine - Build QtWebEngine and QtWebEngineWidgets modules
dev-python/pyside2:websockets - Build QtWebSockets module
dev-python/pyside2:widgets - Build QtWidgets module
dev-python/pyside2:x11extras - Build QtX11Extras module
dev-python/pyside2:xml - Build QtXml module
dev-python/pyside2:xmlpatterns - Build QtXmlPatterns module
dev-python/pyside6:3d - Build Qt3DCore, Qt3DAnimation, Qt3DExtras, Qt3DInput, Qt3DLogic, and Qt3DRender modules
dev-python/pyside6:bluetooth - Build QtBluetooth module
dev-python/pyside6:charts - Build QtCharts module
dev-python/pyside6:concurrent - Build QtConcurrent module
dev-python/pyside6:designer - Build QtDesigner and QtUiTools modules
dev-python/pyside6:gles2-only - Build QtGui "QOpenGL*" classes
dev-python/pyside6:gui - Build QtGui module
dev-python/pyside6:help - Build QtHelp module
dev-python/pyside6:location - Build QtLocation module
dev-python/pyside6:multimedia - Build QtMultimedia and QtMultimediaWidgets modules
dev-python/pyside6:network - Build QtNetwork module
dev-python/pyside6:network-auth - Build QtNetworkAuth module
dev-python/pyside6:nfc - Build QtNfc module
dev-python/pyside6:pdfium - Build QtPdf module
dev-python/pyside6:positioning - Build QtPositioning module
dev-python/pyside6:printsupport - Build QtPrintSupport module
dev-python/pyside6:qml - Build QtQml module
dev-python/pyside6:quick - Build QtQuick and QtQuickWidgets modules
dev-python/pyside6:quick3d - Build QtQuick3D and QtQuickWidgets modules
dev-python/pyside6:scxml - Build QtScxml module
dev-python/pyside6:sensors - Build QtSensors module
dev-python/pyside6:serialport - Build QtSerialPort modules
dev-python/pyside6:spatialaudio - Build QtSpatialAudio module
dev-python/pyside6:speech - Build QtTextToSpeech module
dev-python/pyside6:sql - Build QtSql module
dev-python/pyside6:svg - Build QtSvg module
dev-python/pyside6:testlib - Build QtTest module
dev-python/pyside6:webchannel - Build QtWebChannel module
dev-python/pyside6:webengine - Build QtWebEngine and QtWebEngineWidgets modules
dev-python/pyside6:websockets - Build QtWebSockets module
dev-python/pyside6:widgets - Build QtWidgets module
dev-python/pyside6:xml - Build QtXml module
dev-python/python-box:native-extensions - Compiles native C extensions
dev-python/python-lsp-server:all-plugins - Pull in all optional plugins
dev-python/python-mpd2:twisted - Enable twisted support
dev-python/python-stdnum:vies - Enable VIES
dev-python/pyudev:qt5 - Install PyQt5 bindings
dev-python/pyzmq:drafts - Enable draft API support
dev-python/qiskit:visualization - Enable visualization modules
dev-python/rarfile:compressed - Enables the module to support compressed v3 archives by calling the app-arch/unrar.
dev-python/reedsolo:native-extensions - Compile native C extensions.
dev-python/rfc3986:idna - enable support for the IDNA specification (RFC 5891)
dev-python/rpyc:gdb - Run tests depending on dev-debug/gdb
dev-python/rpyc:numpy - Run tests depending on dev-python/numpy, dev-python/pandas
dev-python/shiboken2:docstrings - Expose documentation as Python docstrings (recommended)
dev-python/shiboken2:numpy - Implicitly convert passed NumPy arrays to Qt lists
dev-python/shiboken2:vulkan - Generate "QSurface::VulkanSurface" bindings
dev-python/shiboken6:docstrings - Expose documentation as Python docstrings (recommended)
dev-python/shiboken6:numpy - Implicitly convert passed NumPy arrays to Qt lists
dev-python/shiboken6:vulkan - Generate "QSurface::VulkanSurface" bindings
dev-python/simplejson:native-extensions - Compiles native "C" extensions (speedups, instead of using Python fallback code).
dev-python/stripe:telemetry - Enable sending "telemetry to Stripe regarding request latency and feature usage" by default. Upstream enables it by default in their PyPI distribution; it can also be explicitly controlled via stripe.enable_telemetry variable (boolean).
dev-python/subprocess-tee:test-full - Enable full test mode. Pulls in many additional dependencies, and requires having been emerged without this flag first in order to avoid a circular dependency.
dev-python/sympy:imaging - Add support for dev-python/pillow
dev-python/sympy:ipython - Add support for dev-python/ipython
dev-python/sympy:mathml - Add support for mathml
dev-python/sympy:pyglet - Use dev-python/pyglet for plots and print preview
dev-python/sympy:symengine - Add support for a dev-python/symengine backend
dev-python/sympy:texmacs - Add app-office/texmacs interface
dev-python/tables:cpudetection - Enables runtime CPU detection (useful for bindist, compatibility on other CPUs)
dev-python/tpm2-pytss:fapi - Enable feature API (requires tpm2-tss be compile with thes same)
dev-python/translate-toolkit:html - Support conversion between po and html files
dev-python/translate-toolkit:ical - Support conversion between po and ical files
dev-python/translate-toolkit:ini - Support conversion between po and ini files
dev-python/translate-toolkit:subtitles - Support conversion between po and sub files
dev-python/translate-toolkit:yaml - Support YAML format
dev-python/twisted:conch - include Twisted SSHv2 implementation
dev-python/twisted:serial - include serial port support
dev-python/websockets:native-extensions - Compiles native C extensions
dev-python/wrapt:native-extensions - Compiles native C extensions (speedups, instead of using python fallback code).
dev-python/zeep:async - Add async support
dev-qt/designer:declarative - Build the qdeclarativeview plugin
dev-qt/linguist-tools:qml - Enable QML support in lupdate
dev-qt/qdoc:qml - Enable QML/JS parsing support
dev-qt/qt-creator:clang - Build clang-based plugins for C/C++ development (code model, formatting, static analysis)
dev-qt/qt-creator:designer - Enable designer for QtWidgets-based UIs
dev-qt/qt-creator:help - Enable the integrated dev-qt/qt-docs viewer (also needed for examples)
dev-qt/qt-creator:plugin-dev - Install the 'Devel' component needed to build external Qt Creator plugins
dev-qt/qt-creator:qmldesigner - Build QmlDesigner and related plugins (Insight, StudioWelcome)
dev-qt/qt-creator:serialterminal - Build the serial terminal plugin
dev-qt/qt-creator:tracing - Build plugins for tracing requiring extra dependencies (AppStatisticsMonitor, CtfVisualizer, PerfProfiler, QmlProfiler)
dev-qt/qt-creator:webengine - Use dev-qt/qtwebengine with the help USE rather than bundled litehtml
dev-qt/qt-docs:3d - Install documentation for dev-qt/qt3d
dev-qt/qt-docs:activeqt - Install documentation for ActiveQt (unpackaged, Windows-only)
dev-qt/qt-docs:assistant - Install documentation for dev-qt/assistant
dev-qt/qt-docs:bluetooth - Install documentation for dev-qt/qtbluetooth
dev-qt/qt-docs:charts - Install documentation for dev-qt/qtcharts
dev-qt/qt-docs:concurrent - Install documentation for dev-qt/qtconcurrent
dev-qt/qt-docs:connectivity - Install documentation for dev-qt/qtconnectivity
dev-qt/qt-docs:datavis - Install documentation for dev-qt/qtdatavis3d (unpackaged for Qt6)
dev-qt/qt-docs:declarative - Install documentation for dev-qt/qtdeclarative
dev-qt/qt-docs:designer - Install documentation for dev-qt/designer
dev-qt/qt-docs:gamepad - Install documentation for dev-qt/qtgamepad (available in qt overlay only)
dev-qt/qt-docs:graphicaleffects - Install documentation for dev-qt/qtgraphicaleffects
dev-qt/qt-docs:graphs - Install documentation for QtGraphs (unpackaged)
dev-qt/qt-docs:grpc - Install documentation for QtGRPC (unpackaged)
dev-qt/qt-docs:gui - Install documentation for dev-qt/qtgui
dev-qt/qt-docs:help - Install documentation for dev-qt/qthelp
dev-qt/qt-docs:html - Install documentation in HTML format
dev-qt/qt-docs:httpserver - Install documentation for QtHTTPServer (unpackaged)
dev-qt/qt-docs:imageformats - Install documentation for dev-qt/qtimageformats
dev-qt/qt-docs:linguist - Install documentation for dev-qt/linguist
dev-qt/qt-docs:location - Install documentation for dev-qt/qtlocation
dev-qt/qt-docs:lottie - Install documentation for QtLottie (unpackaged)
dev-qt/qt-docs:multimedia - Install documentation for dev-qt/qtmultimedia
dev-qt/qt-docs:network - Install documentation for dev-qt/qtnetwork
dev-qt/qt-docs:networkauth - Install documentation for dev-qt/qtnetworkauth
dev-qt/qt-docs:positioning - Install documentation for dev-qt/qtpositioning
dev-qt/qt-docs:printsupport - Install documentation for dev-qt/qtprintsupport
dev-qt/qt-docs:qch - Install documentation in QCH format
dev-qt/qt-docs:qdoc - Install documentation for dev-qt/qdoc
dev-qt/qt-docs:qt5compat - Install documentation for dev-qt/qt5compat
dev-qt/qt-docs:quick3d - Install documentation for dev-qt/qtquick3d
dev-qt/qt-docs:quick3dphysics - Install documentation for QtQuick3DPhysics (unpackaged)
dev-qt/qt-docs:quickcontrols - Install documentation for dev-qt/qtquickcontrols
dev-qt/qt-docs:quickcontrols2 - Install documentation for dev-qt/qtquickcontrols2
dev-qt/qt-docs:quickeffectmaker - Install documentation for QtQuickEffectMaker (unpackaged)
dev-qt/qt-docs:remoteobjects - Install documentation for QtRemoteObjects (unpackaged)
dev-qt/qt-docs:script - Install documentation for dev-qt/qtscript
dev-qt/qt-docs:scxml - Install documentation for dev-qt/qtscxml
dev-qt/qt-docs:sensors - Install documentation for dev-qt/qtsensors
dev-qt/qt-docs:serialbus - Install documentation for dev-qt/qtserialbus (unpacakged for Qt6)
dev-qt/qt-docs:serialport - Install documentation for dev-qt/qtserialport
dev-qt/qt-docs:shadertools - Install documentation for dev-qt/qtshadertools
dev-qt/qt-docs:speech - Install documentation for dev-qt/qtspeech
dev-qt/qt-docs:sql - Install documentation for dev-qt/qtsql
dev-qt/qt-docs:svg - Install documentation for dev-qt/qtsvg
dev-qt/qt-docs:timeline - Install documentation for dev-qt/qtquicktimeline
dev-qt/qt-docs:tools - Install documentation for dev-qt/qttools
dev-qt/qt-docs:virtualkeyboard - Install documentation for dev-qt/qtvirtualkeyboard
dev-qt/qt-docs:wayland - Install documentation for dev-qt/qtwayland
dev-qt/qt-docs:webchannel - Install documentation for dev-qt/qtwebchannel
dev-qt/qt-docs:webengine - Install documentation for dev-qt/qtwebengine
dev-qt/qt-docs:websockets - Install documentation for dev-qt/qtwebsockets
dev-qt/qt-docs:webview - Install documentation for dev-qt/qtwebview (unpackaged for Qt6)
dev-qt/qt-docs:widgets - Install documentation for dev-qt/qtwidgets
dev-qt/qt-docs:x11extras - Install documentation for dev-qt/qtx11extras
dev-qt/qt-docs:xmlpatterns - Install documentation for dev-qt/qtxmlpatterns
dev-qt/qt3d:gamepad - Add support for gamepad hardware via dev-qt/qtgamepad
dev-qt/qt3d:qml - Build QML/QtQuick bindings
dev-qt/qt5compat:qml - Build QML/QtQuick bindings and imports
dev-qt/qtbase:X - Build the XCB platform plugin and enable X11 integration
dev-qt/qtbase:concurrent - Build Qt6Concurrent module
dev-qt/qtbase:dbus - Build Qt6DBus module
dev-qt/qtbase:eglfs - Build the EGL Full Screen/Single Surface platform plugin
dev-qt/qtbase:evdev - Enable support for input devices via evdev
dev-qt/qtbase:gssapi - Enable support for GSSAPI (virtual/krb5)
dev-qt/qtbase:gtk - Build the GTK platform theme plugin
dev-qt/qtbase:gui - Build Qt6Gui module
dev-qt/qtbase:journald - Log messages using sys-apps/systemd's journald rather than output to stderr (override with the QT_FORCE_STDERR_LOGGING=1 env var)
dev-qt/qtbase:libinput - Enable support for input devices via dev-libs/libinput
dev-qt/qtbase:libproxy - Use net-libs/libproxy for automatic HTTP/SOCKS proxy configuration
dev-qt/qtbase:network - Build Qt6Network module
dev-qt/qtbase:renderdoc - Enable support for capturing graphic's API calls using media-gfx/renderdoc
dev-qt/qtbase:sql - Build Qt6Sql module
dev-qt/qtbase:syslog - Log messages using syslog rather than output to stderr (override with the QT_FORCE_STDERR_LOGGING=1 env var)
dev-qt/qtbase:tslib - Enable support for touchscreen devices via x11-libs/tslib
dev-qt/qtbase:widgets - Build Qt6Widgets module
dev-qt/qtbluetooth:qml - Build QML/QtQuick bindings and imports
dev-qt/qtcharts:qml - Build QML/QtQuick bindings and imports
dev-qt/qtconnectivity:neard - Use net-wireless/neard to access NFC devices
dev-qt/qtconnectivity:nfc - Enable support for the Near Field Communication protocol
dev-qt/qtcore:old-kernel - Disable syscalls not available on Linux kernels older than 4.11
dev-qt/qtdatavis3d:qml - Build QML/QtQuick bindings and imports
dev-qt/qtdeclarative:localstorage - Build the LocalStorage import for QtQuick (requires QtSql)
dev-qt/qtdeclarative:network - Enable QtNetwork support
dev-qt/qtdeclarative:opengl - Enable OpenGL support
dev-qt/qtdeclarative:qmlls - Build the qmlls tool using dev-qt/qtlanguageserver
dev-qt/qtdeclarative:sql - Enable QtSQL support
dev-qt/qtdeclarative:widgets - Enable QtWidgets support
dev-qt/qtdiag:network - Report network information
dev-qt/qtdiag:widgets - Report widget style information
dev-qt/qtgamepad:evdev - Enable support for input devices via evdev
dev-qt/qtgamepad:qml - Build QML bindings
dev-qt/qtgui:X - Build the XCB platform plugin and enable X11 integration
dev-qt/qtgui:eglfs - Build the EGL Full Screen/Single Surface platform plugin
dev-qt/qtgui:evdev - Enable support for input devices via evdev
dev-qt/qtgui:ibus - Build the IBus input method plugin
dev-qt/qtgui:libinput - Enable support for input devices via dev-libs/libinput
dev-qt/qtgui:linuxfb - Enable Linux framebuffer support for embedded devices
dev-qt/qtgui:tslib - Enable support for touchscreen devices via x11-libs/tslib
dev-qt/qtgui:tuio - Build plugin to receive touch events over the TUIO protocol
dev-qt/qtgui:wayland - Provide dev-qt/qtwayland to ensure Qt applications can be run as Wayland clients
dev-qt/qthttpserver:websockets - Enable websockets support using dev-qt/qtwebsockets
dev-qt/qtmultimedia:eglfs - Enable screen capture support with Qt's EGL Full Screen/Single Surface platform plugin
dev-qt/qtmultimedia:gstreamer - Enable audio support via media-libs/gstreamer
dev-qt/qtmultimedia:qml - Build QML/QtQuick bindings and imports
dev-qt/qtmultimedia:widgets - Build the QtMultimediaWidgets module
dev-qt/qtnetwork:gssapi - Enable support for GSSAPI (virtual/krb5)
dev-qt/qtnetwork:libproxy - Use net-libs/libproxy for automatic HTTP/SOCKS proxy configuration
dev-qt/qtpositioning:geoclue - Use enhanced location information from app-misc/geoclue
dev-qt/qtpositioning:nmea - Build plugin for parsing NMEA (National Marine Electronics Association) sentences
dev-qt/qtpositioning:qml - Build QML bindings
dev-qt/qtquickcontrols:widgets - Enable QtWidgets support
dev-qt/qtquickcontrols2:widgets - Enable QtWidgets support
dev-qt/qtremoteobjects:qml - Build QML/QtQuick bindings and imports
dev-qt/qtscript:scripttools - Build the QtScriptTools module (requires QtWidgets)
dev-qt/qtscxml:qml - Build QML/QtQuick bindings and imports
dev-qt/qtsensors:qml - Build QML bindings
dev-qt/qtspeech:flite - Enable text-to-speech synthesizer plugin using app-accessibility/flite engine
dev-qt/qtspeech:qml - Build QML/QtQuick bindings and imports
dev-qt/qtspeech:speechd - Enable text-to-speech synthesizer plugin using app-accessibility/speech-dispatcher engine
dev-qt/qttools:assistant - Build Qt Assistant and the QtHelp module
dev-qt/qttools:clang - Enable using libclang for code parsing (linguist/qdoc)
dev-qt/qttools:designer - Build Qt Designer
dev-qt/qttools:distancefieldgenerator - Build Qt Distance Field Generator
dev-qt/qttools:linguist - Build Qt Linguist (GUI requires USE=widgets)
dev-qt/qttools:pixeltool - Build Qt Pixeltool
dev-qt/qttools:qdbus - Build the Qt D-Bus Interface (D-Bus Viewer requires USE=widgets)
dev-qt/qttools:qdoc - Build Qt Documentation Generator
dev-qt/qttools:qml - Build QML/QtQuick bindings and imports
dev-qt/qttools:qmlls - Build the QtHelp plugin for the QML language server
dev-qt/qttools:qtattributionsscanner - Build Qt Source Code Attribution Scanner
dev-qt/qttools:qtdiag - Build Qt Diag
dev-qt/qttools:qtplugininfo - Build Qt Plugin Info
dev-qt/qttools:widgets - Enable QtWidgets support
dev-qt/qtvirtualkeyboard:handwriting - Adds handwriting recognition integration support
dev-qt/qtwayland:compositor - Enable support for the wayland compositor / server APIs
dev-qt/qtwayland:gnome - Build the GNOME-like decoration plugin (loaded by default with GNOME)
dev-qt/qtwayland:qml - Build QML/QtQuick bindings and imports
dev-qt/qtwayland:vulkan - Enable support for Vulkan-based server buffer integration
dev-qt/qtwebchannel:qml - Build QML/QtQuick bindings and imports
dev-qt/qtwebengine:designer - Install the QWebEngineView plugin used to add widgets in dev-qt/designer forms that display web pages.
dev-qt/qtwebengine:jumbo-build - Combine source files to speed up build process.
dev-qt/qtwebengine:pdfium - Build the QtPdf module based on chromium's PDFium library
dev-qt/qtwebengine:qml - Build QML/QtQuick bindings and imports
dev-qt/qtwebengine:system-icu - Use the system-wide dev-libs/icu instead of bundled.
dev-qt/qtwebengine:webdriver - Build tool for automated testing (ChromeDriver equivalent)
dev-qt/qtwebengine:widgets - Enable QtWidgets support
dev-qt/qtwebsockets:qml - Build QML bindings
dev-qt/qtwidgets:gtk - Build the GTK platform theme plugin
dev-qt/qtxmlpatterns:qml - Build the XmlListModel import for QtQuick (requires QtDeclarative)
dev-ruby/activesupport:msgpack - Support ActiveSupport::MessagePack module
dev-ruby/asciidoctor-diagram:barcode - Enable diagrams with dev-ruby/rqrcode and dev-ruby/barby
dev-ruby/asciidoctor-diagram:ditaa - Enable diagrams with media-gfx/ditaa
dev-ruby/asciidoctor-diagram:lilypond - Enable diagrams with media-sound/lilypond
dev-ruby/asciidoctor-diagram:meme - Enable diagrams with media-gfx/imagemagick
dev-ruby/asciidoctor-diagram:mscgen - Enable diagrams with media-gfx/mscgen
dev-ruby/asciidoctor-diagram:plantuml - Enable diagrams with media-gfx/plantuml
dev-ruby/asciidoctor-diagram:tikz - Enable diagrams with dev-tex/pgf
dev-ruby/barby:cairo - Add support for writing images (PNG, PS, EPS and, if supported, PDF and SVG) using dev-ruby/rcairo. Not available on JRuby.
dev-ruby/barby:png - Add support for writing PNG images using dev-ruby/chunky_png.
dev-ruby/barby:prawn - Add support for writing PDF documents using dev-ruby/prawn.
dev-ruby/barby:qrcode - Add support for QRCode 2D codes using dev-ruby/rqrcode.
dev-ruby/barby:rmagick - Add support for writing images (among others PNG, GIF and JPEG) using dev-ruby/rmagick. Not available on JRuby.
dev-ruby/faraday_middleware:mashify - Include FaradayMiddleware::Mashify
dev-ruby/faraday_middleware:oauth - Include FaradayMiddleware::OAuth
dev-ruby/faraday_middleware:parsexml - Include FaradayMiddleware::ParseXml
dev-ruby/faraday_middleware:rashify - Include FaradayMiddleware::Rashify
dev-ruby/io-event:io-uring - Enable io_uring support, and use io_uring instead of epoll
dev-ruby/jwt:eddsa - Support EdDSA algorithm using dev-ruby/rbnacl
dev-ruby/maruku:highlight - Enable source code highlighting via dev-ruby/syntax
dev-ruby/mysql2:mariadb - Use mariadb bindings
dev-ruby/net-ssh:chacha20 - Use dev-ruby/rbnacl for chacha20-poly1305@openssh.com support
dev-ruby/net-ssh:ed25519 - Use dev-ruby/ed25519 for Ed25519 support
dev-ruby/rrdtool-bindings:graph - Enable support for graphing functions
dev-ruby/rspec-core:highlight - Enable source code highlighting via dev-ruby/coderay
dev-ruby/rubygems:server - Install support for the rubygems server
dev-ruby/vcr:json - Add support for casettes serialized with JSON
dev-scheme/bigloo:avahi - Enable Avahi support
dev-scheme/bigloo:gpg - Enable GPG support
dev-scheme/bigloo:libuv - Enable libuv support
dev-scheme/gauche-gl:cg - Enable NVidia Cg binding
dev-scheme/guile:debug-freelist - Include garbage collector freelist debugging code
dev-scheme/guile:debug-malloc - Include malloc debugging code
dev-scheme/guile:deprecated - Enable deprecated features
dev-scheme/guile:discouraged - (implied by deprecated) enable merely discouraged features
dev-scheme/guile:networking - Include networking interfaces
dev-scheme/guile:regex - Include regular expression interfaces
dev-scheme/kawa:awt - Assume AWT is available
dev-scheme/kawa:frontend - Build "kawa" front-end program using sys-libs/readline
dev-scheme/kawa:jemacs - Build JEmacs
dev-scheme/kawa:krl - Build BRL emulation and KRL
dev-scheme/kawa:sax - Assume SAX2 is available with dev-java/sax
dev-scheme/kawa:servlets - Build support for generating servlets with Java servletapi
dev-scheme/kawa:swing - Assume Swing is available
dev-scheme/mit-scheme:blowfish - Compile with blowfish encryption support
dev-scheme/racket:chez - Build Racket on Chez (Racket CS)
dev-scheme/racket:futures - Enable racket/future library for fine-grained hardware parallelism
dev-scheme/racket:ncurses - Add ncurses support for expeditor (REPL expression editor)
dev-scheme/racket:places - Enable racket/place library for share-nothing parallelism and message-passing communication. Compared to futures, places are heavyweight, but they have a simpler performance model.
dev-scheme/racket:threads - Enable support for green threads
dev-scheme/scm:arrays - Support for arrays, uniform-arrays and uniform-vectors.
dev-scheme/scm:bignums - Support for large precision integers.
dev-scheme/scm:cautious - SCM will always check the number of arguments to interpreted closures.
dev-scheme/scm:dynamic-linking - Be able to load compiled files while running.
dev-scheme/scm:engineering-notation - Floats to display in engineering notation (exponents always multiples of 3) instead of scientific notation.
dev-scheme/scm:gsubr - generalized c arguments: for arbitrary (more then 11) arguments to C functions.
dev-scheme/scm:inexact - Support for floating point numbers.
dev-scheme/scm:ioext - Commonly available I/O extensions: line I/O, file positioning, file delete and rename, and directory functions.
dev-scheme/scm:libscm - Build and install libscm.a and related headers
dev-scheme/scm:macro - C level support for hygienic and referentially transparent macros (syntax-rules macros).
dev-scheme/scm:regex - String regular expression matching.
dev-scheme/scm:unix - Support for: nice, acct, lstat, readlink, symlink, mknod and sync.
dev-scheme/slib:gambit - Support for gambit scheme implementation
dev-scheme/slib:scm - Support for scm scheme implementation
dev-tcltk/expect-lite:debug - pull in packages needed for runtime interactive debugger
dev-tcltk/tcl3d:ode - Enable support for physics engine from dev-games/ode
dev-tcltk/tcl3d:osg - Enable support for 3D toolkit from dev-games/openscenegraph
dev-tcltk/tktreectrl:shellicon - shellicon extension
dev-tex/abntex:lyx - Install with app-office/lyx layout
dev-tex/biblatex:biber - Install the unicode compatible backend processor
dev-tex/pythontex:highlighting - Syntax highlighting using dev-python/pygments
dev-texlive/texlive-basic:luajittex - Add support for LuaJitTeX: LuaTeX based on LuaJIT which is usually faster.
dev-util/Tensile:client - Build and install tensile_client executable to run benchmarks and tune GPU GEMM
dev-util/babeltrace:elfutils - Build the dev-util/lttng-ust debug information filter component class
dev-util/babeltrace:plugins - Build support for Babeltrace 2 Python plugins
dev-util/bpftool:caps - Use sys-libs/libcap to enable unprivileged run support
dev-util/bpftool:llvm - Use sys-devel/llvm instead of libbfd (sys-libs/binutils-libs) for JIT disassembly
dev-util/breakpad:tools - Build tools
dev-util/buildbot:docker - Add support for worker docker command steps
dev-util/buildbot:irc - Add support for status delivery through an ircbot.
dev-util/cargo-audit:fix - Add support for 'fix' subcommand (experimental)
dev-util/catalyst:ccache - Enables ccache support
dev-util/catalyst:iso - Pulls in the depends for building iso images
dev-util/catalyst:system-bootloader - Pulls in the depends needed to setup livecd bootloader from the host system rather than using a cdtar
dev-util/ccache:redis - Enable Redis backend for storage via dev-libs/hiredis
dev-util/ccache:static-c++ - Avoid dynamic dependency on gcc's libstdc++.
dev-util/cccc:apidoc - Build software docs with doxygen/graphviz and metrics with cccc
dev-util/cccc:mfc - Add patch for MFC dialect options
dev-util/codeblocks:contrib - Build additional contrib components
dev-util/codeblocks:fortran - Build FortranProject plugin which enables to use Code::Blocks IDE for Fortran language
dev-util/cppcheck:charts - Enable QtCharts usage in the GUI
dev-util/cppcheck:htmlreport - install cppcheck-htmlreport
dev-util/ctags:json - Enable JSON output support
dev-util/ctags:xml - Enable XML parsing support
dev-util/ctags:yaml - Enable YAML parsing support
dev-util/cwdiff:mercurial - install hg wdiff alias for dev-vcs/mercurial
dev-util/devhelp:gedit - Install plugin for app-editors/gedit
dev-util/dialog:minimal - Disable library, install command-line program only
dev-util/diffoscope:R - Use dev-lang/R
dev-util/diffoscope:binutils - Use sys-devel/binutils
dev-util/diffoscope:cpio - Use app-alternatives/cpio
dev-util/diffoscope:diff - Use sys-apps/diffutils
dev-util/diffoscope:docx - Use app-text/docx2txt
dev-util/diffoscope:dtc - Use sys-apps/dtc
dev-util/diffoscope:e2fsprogs - Use sys-fs/e2fsprogs
dev-util/diffoscope:file - Use sys-apps/file
dev-util/diffoscope:find - Use sys-apps/findutils
dev-util/diffoscope:gettext - Use sys-devel/gettext
dev-util/diffoscope:gpg - Use app-crypt/gnupg
dev-util/diffoscope:haskell - Use dev-lang/ghc
dev-util/diffoscope:hdf5 - Use sci-libs/hdf5
dev-util/diffoscope:hex - Use app-editors/vim-core
dev-util/diffoscope:iso - Use app-cdr/cdrtools
dev-util/diffoscope:llvm - Use sys-devel/llvm
dev-util/diffoscope:opendocument - Use app-text/odt2txt
dev-util/diffoscope:pascal - Use dev-lang/fpc
dev-util/diffoscope:rpm - Use app-arch/rpm
dev-util/diffoscope:squashfs - Use sys-fs/squashfs-tools
dev-util/diffoscope:ssh - Use net-misc/openssh
dev-util/diffoscope:tar - Use app-arch/tar
dev-util/diffoscope:tcpdump - Use net-analyzer/tcpdump
dev-util/diffoscope:zip - Use app-arch/unzip
dev-util/dropwatch:bfd - Add support for Binary File Descriptor
dev-util/edi:clang - Provide integration with sys-devel/clang and dev-util/bear for autocompletion, inline errors and information about compilation units.
dev-util/flatpak-builder:yaml - Use libyaml for yaml support
dev-util/geany:vte - Enable Terminal support (x11-libs/vte)
dev-util/geany-plugins:ctags - Enable ctags plugin
dev-util/geany-plugins:debugger - Enable the debugger plugin which interfaces with dev-debug/gdb
dev-util/geany-plugins:enchant - Enable spell checking using enchant
dev-util/geany-plugins:gpg - Enable geanypg plugin which integrates GPG using app-crypt/gpgme
dev-util/geany-plugins:gtkspell - Use gtkspell for dictionary support in GeanyVC
dev-util/geany-plugins:markdown - Enable the markdown plugin
dev-util/geany-plugins:pretty-printer - Enable pretty-printer plugin
dev-util/geany-plugins:scope - Enable the scope plugin which is a graphical GDB front-end
dev-util/geany-plugins:webhelper - Enable webhelper plugin
dev-util/geany-plugins:workbench - Enable workbench plugin
dev-util/glade:gjs - Build catalog support for dev-libs/gjs widgets.
dev-util/glade:webkit - Build catalog support for net-libs/webkit-gtk:4 widgets.
dev-util/global:vim - Integrate the GNU GLOBAL source code tag system with Vim
dev-util/gnome-builder:clang - Provide integration with sys-devel/clang for best possible C/C++ autocompletion, semantic highlighting, symbol resolving, and diagnostics support
dev-util/gnome-builder:d-spy - Provide D-Bus debugging functionality via dev-debug/d-spy
dev-util/gnome-builder:flatpak - Enable support for flatpak applications using sys-apps/flatpak
dev-util/gnome-builder:git - Provide support for the Git version control system via dev-libs/libgit2-glib (such as setup of Git for New Project, direct cloning for Open Project and changed lines indicators in the editor gutter)
dev-util/gnome-builder:sysprof - Provide an integrated profiler via dev-util/sysprof
dev-util/google-perftools:debug - Build a set of libraries with debug support (so-called debugalloc). These are available by default but are not needed unless you're actually developing using tcmalloc.
dev-util/google-perftools:minimal - Only build the tcmalloc_minimal library, ignoring the heap checker and the profilers.
dev-util/google-perftools:optimisememory - To build libtcmalloc with smaller internal caches.
dev-util/google-perftools:pagesize-128k - Use 128K page size for tcmalloc. Larger size makes tcmalloc faster, at the cost of using more space (due to internal fragmentation)
dev-util/google-perftools:pagesize-16k - Use 16K page size for tcmalloc. Larger size makes tcmalloc faster, at the cost of using more space (due to internal fragmentation)
dev-util/google-perftools:pagesize-256k - Use 256K page size for tcmalloc. Larger size makes tcmalloc faster, at the cost of using more space (due to internal fragmentation)
dev-util/google-perftools:pagesize-32k - Use 32K page size for tcmalloc. Larger size makes tcmalloc faster, at the cost of using more space (due to internal fragmentation)
dev-util/google-perftools:pagesize-64k - Use 64K page size for tcmalloc. Larger size makes tcmalloc faster, at the cost of using more space (due to internal fragmentation)
dev-util/heaptrack:gui - Install Qt5-based analyzer tool
dev-util/hfstospell:clang - Use different logic in ebuild when clang is used
dev-util/hip:hip - Build HIP runtime
dev-util/hip:opencl - Build OpenCL runtime
dev-util/hip:video_cards_amdgpu - Build for AMD platform
dev-util/hip:video_cards_nvidia - Build for Nvidia platform
dev-util/intel-graphics-compiler:vc - Enable VectorCompiler for a better performance.
dev-util/intel-graphics-system-controller:cli - Build CLI tools for flashing manually a firmware upgrade.
dev-util/kcov:binutils - Use sys-libs/binutils-libs for `--verify` support
dev-util/kdevelop:gdbui - Enable GUI for attaching GDB to a running process
dev-util/kdevelop:qmake - Enable support for QMake build system
dev-util/kdevelop:share - Enable support for patch sharing using kde-frameworks/purpose
dev-util/kernelshark:custom-optimization - Build with user-specified compiler optimizations (-Os, -O0, -O1, -O2, -O3) from CFLAGS
dev-util/kup:gitolite - Enable support for dev-vcs/gitolite in kup-server
dev-util/libabigail:btf - Handle reading kernel debug files in BTF format via dev-libs/libbpf
dev-util/librnp:botan - Use Botan crypto backend instead of OpenSSL
dev-util/lttng-tools:ust - Support LTTng-UST (Userspace Tracing)
dev-util/lttng-ust:numa - Enable numa support
dev-util/massif-visualizer:callgraph - Enable detailed snapshot analysis using media-gfx/kgraphviewer
dev-util/mingw64-runtime:default-ucrt - Use ucrt instead of msvcrt-os as the default crt (WARNING: incompatible with each others and also for building Wine with USE=mingw, pick one from the start and keep it)
dev-util/mingw64-runtime:idl - Install idl files
dev-util/mingw64-runtime:libraries - Build extra libraries: mangle, pseh, winpthreads
dev-util/mingw64-runtime:tools - Build extra tools: gendef, genidl, widl
dev-util/mingw64-toolchain:bin-symlinks - Symlink executables to usr/bin to be in default PATH (conflicts with crossdev mingw, and crossdev is preferable for a fully featured toolchain)
dev-util/nvidia-cuda-toolkit:debugger - Install the CUDA debugger
dev-util/nvidia-cuda-toolkit:nsight - Install profiling and optimizing tools (nsight-compute, nsight-systems)
dev-util/nvidia-cuda-toolkit:profiler - Install the NVIDIA CUDA profiler (nvprof) and the related libraries
dev-util/nvidia-cuda-toolkit:rdma - Enable infiniband support via sys-cluster/rdma-core
dev-util/nvidia-cuda-toolkit:sanitizer - Install compute-sanitizer tool
dev-util/nvidia-cuda-toolkit:vis-profiler - Install the NVIDIA CUDA visual profiler (nvvp)
dev-util/oprofile:apidoc - Provide doxygen generated API docs.
dev-util/ostree:archive - Use libarchive
dev-util/ostree:dracut - Install dracut module
dev-util/ostree:gpg - Enable GPG support
dev-util/ostree:grub - Enable grub configuration generator
dev-util/ostree:httpd - Enable ostree trivial-httpd entrypoint
dev-util/ostree:libmount - Use libmount
dev-util/ostree:sodium - Use libsodium for ed25519
dev-util/ostree:soup - Use libsoup for networking
dev-util/perf:babeltrace - Enable dev-util/babeltrace support
dev-util/perf:bpf - Enable support for eBPF features with dev-libs/libbpf
dev-util/perf:capstone - Use dev-libs/capstone for disassembly support
dev-util/perf:doc - Build documentation and man pages. With this USE flag disabled, the --help parameter for perf and its sub-tools will not be available. This is optional because it depends on a few documentation handling tools that are not always welcome on user systems.
dev-util/perf:libpfm - Enable dev-libs/libpfm support
dev-util/perf:libtraceevent - Enable dev-libs/libtraceevent support
dev-util/perf:libtracefs - Enable dev-libs/libtracefs support
dev-util/perf:numa - Enable NUMA support
dev-util/perf:perl - Add support for Perl as a scripting language for perf tools.
dev-util/perf:systemtap - Add support to define SDT event in perf tools.
dev-util/perf:unwind - Use sys-libs/libunwind for frame unwinding support.
dev-util/pkgconf:native-symlinks - Install generic symlinks like pkgconf and pkg-config. If this flag is disabled, only CHOST-prefixed pkg-config executables will be available to end users and ebuilds.
dev-util/plan9port:freefonts - Don't install BigelowHolmes fonts
dev-util/poke:nbd - Enable poking at networked block devices via sys-libs/libnbd.
dev-util/poke:pvm-profiling - Enable profiling in the PVM
dev-util/pycharm-community:bundled-jdk - Use bundled jdk
dev-util/pycharm-professional:bundled-jdk - Use bundled jdk
dev-util/ropper:z3 - Enable Z3 contraint solver support
dev-util/scanmem:gui - Enable the GameConqueror GUI
dev-util/sccache:azure - Enable Azure Blob Storage support
dev-util/sccache:dist-client - Enables distributed support in the sccache client
dev-util/sccache:dist-server - Enables the sccache-dist binary
dev-util/sccache:gcs - Enable Google Cloud Storage support
dev-util/sccache:redis - Enable Redis support
dev-util/sccache:s3 - Enable full Amazon S3 support
dev-util/sccache:simple-s3 - Enable minimal Amazon S3 support
dev-util/schroot:btrfs - Enable support for chroots using btrfs snapshots
dev-util/schroot:dchroot - Enables the building of a wrapper named "dchroot", replacing sys-apps/dchroot
dev-util/schroot:lvm - Enable support for chroots using LVM snapshots
dev-util/schroot:zfs - Enable support for chroots using ZFS shapshots/clones
dev-util/sdl-jstest:sdl - Enable media-libs/libsdl2 based input test
dev-util/sdl-jstest:sdl1 - Enable media-libs/libsdl based input test
dev-util/selenium-manager:telemetry - Disable sending telemetry by default (avoid-stats config option).
dev-util/sysprof:unwind - Use sys-libs/libunwind to unwind the stack
dev-util/uftrace:capstone - Use capstone to provide dynamic tracing without recompilation
dev-util/vulkan-tools:cube - Build the cube/cubepp demos
dev-util/watchman:python - Install pywatchman bindings and the watchman-{wait,make} utils
dev-vcs/cvs:server - Enable server support
dev-vcs/darcs:curl - Use libcurl for HTTP support.
dev-vcs/darcs:terminfo - Use the terminfo package for enhanced console support.
dev-vcs/darcs:threaded - Use threading and SMP support.
dev-vcs/fossil:fusefs - Enable the Fuse Filesystem
dev-vcs/fossil:json - Enable the JSON API of Fossil's wiki
dev-vcs/fossil:system-sqlite - Use the system SQLite instead of the bundled one
dev-vcs/fossil:tcl-private-stubs - Enable Tcl integration via private stubs mechanism
dev-vcs/fossil:tcl-stubs - Enable Tcl integration via stubs library mechanism
dev-vcs/fossil:th1-docs - Enable TH1 for embedded documentation pages
dev-vcs/fossil:th1-hooks - Enable TH1 hooks for commands and web pages
dev-vcs/git:blksha1 - Use the new optimized SHA1 implementation
dev-vcs/git:cgi - Install gitweb too
dev-vcs/git:curl - Support fetching and pushing (requires webdav too) over http:// and https:// protocols
dev-vcs/git:gpg - Pull in gnupg for signing -- without gnupg, attempts at signing will fail at runtime!
dev-vcs/git:highlight - GitWeb support for app-text/highlight
dev-vcs/git:mediawiki - Support pulling and pushing from MediaWiki
dev-vcs/git:perforce - Add support for Perforce version control system (requires manual installation of Perforce client)
dev-vcs/git:safe-directory - Respect the safe.directory setting
dev-vcs/git:subversion - Include git-svn for dev-vcs/subversion support
dev-vcs/git:tk - Include the 'gitk' and 'git gui' tools
dev-vcs/git:webdav - Adds support for push'ing to HTTP/HTTPS repositories via DAV
dev-vcs/git-annex:assistant - Enable git-annex assistant and watch command
dev-vcs/git-annex:benchmark - Enable benchmarking
dev-vcs/git-annex:dbus - Enable dbus support
dev-vcs/git-annex:gitlfs - Build with git-lfs library (rather than vendored copy)
dev-vcs/git-annex:magicmime - Use libmagic to determine file MIME types
dev-vcs/git-annex:pairing - Enable pairing
dev-vcs/git-annex:torrentparser - Use haskell torrent library to parse torrent files
dev-vcs/git-annex:webapp - Enable git-annex webapp
dev-vcs/git-delete-merged-branches:full-name-executable - Install executable /usr/bin/git-delete-merged-branches that is in conflict with dev-vcs/git-extras
dev-vcs/gitg:glade - Install a glade catalog file
dev-vcs/gitg:python - Install Python bindings for those plugins requiring it.
dev-vcs/gitolite:tools - Install tools to e.g. convert a Gitosis config to gitolite or one to check if your setup is gitolite >= 3.x compatible
dev-vcs/gitolite-gentoo:tools - Install tools to e.g. convert a Gitosis config to gitolite or one to check if your setup is gitolite >= 3.x compatible
dev-vcs/mercurial:chg - Support Mercurial command server client
dev-vcs/mercurial:gpg - Support signing with GnuPG.
dev-vcs/mercurial:rust - Use Rust extensions.
dev-vcs/mercurial:tk - Install dev-lang/tk for hgk script.
dev-vcs/subversion:extras - Install extra scripts (examples, tools, hooks)
dev-vcs/subversion:kwallet - Enable encrypted storage of passwords with kde-frameworks/kwallet
dev-vcs/subversion:plaintext-password-storage - Enable on-disk caching of plaintext passwords and passphrases. (Enabling this functionality will not force Subversion to store passwords in plaintext, but does permit users to explicitly allow that behavior via runtime configuration.)
games-action/beathazardultra:bundled-libs - Use the upstream provided bundled libraries.
games-action/descent1-freedata:l10n_de - Provides German translations for the game's briefings, robot descriptions, and outro of the original campaign
games-action/descent1-freedata:opl3-musicpack - Include alternate version of the game's music, recorded with the Yamaha YMF262 OPL3 soundchip
games-action/descent1-freedata:sc55-musicpack - Include alternate version of the game's music, recorded with the Roland Sound Canvas SC-55 MIDI module
games-action/descent1-freedata:textures - Include high resolution (640x480) backgrounds, briefing images and fonts (Descent 1)
games-action/descent2-freedata:l10n_de - Provides German translations for the game's briefings, robot descriptions, and outro of the original campaign
games-action/descent2-freedata:opl3-musicpack - Include alternate version of the game's music, recorded with the Yamaha YMF262 OPL3 soundchip
games-action/descent2-freedata:sc55-musicpack - Include alternate version of the game's music, recorded with the Roland Sound Canvas SC-55 MIDI module
games-action/dxx-rebirth:d1x - Install Descent 1 resources and executable
games-action/dxx-rebirth:d2x - Install Descent 2 resources and executable
games-action/dxx-rebirth:data - Ensure some game levels are present; if the full game's level data is not already installed then install the playable demo data (i.e. shareware levels)
games-action/dxx-rebirth:debug - Enable various debugging code paths and sanity checks, not just output. Some of these checks date back to the retail build, and choke on some custom levels because the game was never coded to sufficiently distrust inputs
games-action/dxx-rebirth:editor - Enable level editor support
games-action/dxx-rebirth:l10n_de - Provides German translations for the game's briefings, robot descriptions, and outro of the original campaign
games-action/dxx-rebirth:midi - Enforce that SDL-mixer is used and has midi support
games-action/dxx-rebirth:music - Enable music support
games-action/dxx-rebirth:opl3-musicpack - Include alternate version of the game's music, recorded with the Yamaha YMF262 OPL3 soundchip
games-action/dxx-rebirth:sc55-musicpack - Include alternate version of the game's music, recorded with the Roland Sound Canvas SC-55 MIDI module
games-action/dxx-rebirth:sdl2 - Use libSDL2, SDL2-mixer instead of libSDL-1* and SDL-mixer-1*
games-action/dxx-rebirth:tracker - Enable support for the PHP-based multiplayer game tracker
games-action/hotline-miami:bundled-libs - Use bundled libraries.
games-action/hotline-miami:launcher - Install qt launcher
games-action/prismlauncher:qt6 - Build with Qt6 support instead of the default Qt5
games-action/supermariowar:server - Compile and install Super Mario War server files
games-action/supertuxkart:nettle - Use dev-libs/nettle crypto backend
games-action/supertuxkart:recorder - Enable recording with media-libs/libopenglrecorder
games-action/supertuxkart:sqlite - Record IP bans, statistics in server mode with dev-db/sqlite
games-action/supertuxkart:wiimote - Support for wiimote input devices
games-action/swordandsworcery:bundled-libs - Use the upstream provided bundled libraries.
games-action/trine:launcher - Install GTK+ launcher
games-action/trine-enchanted-edition:launcher - Install GTK+ launcher
games-action/trine2:launcher - Install GTK+ launcher
games-arcade/bomns:editor - enables building the level editor
games-arcade/commandergenius:downloader - Allows some Keen games to be downloaded from the menu
games-arcade/jazz2:sdl - Prefer SDL2 over GLFW backend
games-arcade/jazz2:server - Build the multiplayer game server
games-arcade/jazz2-data:cc - Install The Christmas Chronicles additional data
games-arcade/jazz2-data:demo - Use the free demo data instead of the full retail game data
games-arcade/lbreakout2:themes - Install additional themes
games-arcade/moleinvasion:music - Download and install the music files
games-arcade/oshu:osu-skin - Include more complete osu-skin (other is minimal)
games-arcade/osu-lazer:pipewire - Use pipewire to enable sound output
games-arcade/performous:midi - Enable MIDI I/O support
games-arcade/performous:songs - Install a few demo songs
games-arcade/performous:webcam - Enable Webcam support
games-arcade/tuxanci:physfs - Use dev-games/physfs instead of dev-libs/libzip to load compressed data
games-board/cockatrice:client - Build with client
games-board/cockatrice:oracle - Build with oracle
games-board/cockatrice:server - Compile server support
games-board/crafty:no-opts - Don't try to enable crazy CFLAG options
games-board/freedoko:backgrounds - Install additional background images
games-board/freedoko:gnomecards - Install the gnome-games card set
games-board/freedoko:kdecards - Install the KDE card set
games-board/freedoko:openclipartcards - Install the openclipartcards card set
games-board/freedoko:pysolcards - Install the PySol card set
games-board/freedoko:xskatcards - Install the XSkat card set
games-board/pasang-emas:extras - Install some extra themes
games-board/pioneers:help - Enable gnome ingame help via scrollkeeper
games-board/pysolfc:extra-cardsets - Install extra cardsets
games-board/pysolfc:sound - Enable sound support using dev-python/pygame
games-board/scid:photos - Install collection of player photos (large)
games-board/scid:scripts - Install additional python and tcl utility scripts
games-board/stockfish:general-32 - Generic unoptimized 32-bits build
games-board/stockfish:general-64 - Generic unoptimized 64-bits build
games-board/stockfish:optimize - Enable upstream -O3 optimizations (default enabled)
games-board/tablebase-syzygy:6-pieces - Install tablebases for 6 pieces (huge!)
games-board/xboard:default-font - Install the default font that xboard uses
games-board/xboard:zippy - Enable experimental zippy client
games-emulation/atari800:encode-mp3 - Support recording sound in MP3 format
games-emulation/bsnes-jg:jgmodule - Build module for The Jolly Good API
games-emulation/bsnes-jg:shared - Build shared library
games-emulation/desmume:gdb - Enable support for the remote GDB stub
games-emulation/desmume:openal - Use media-libs/openal for microphone input
games-emulation/desmume:wifi - Enable support for Wi-Fi (experimental and discouraged)
games-emulation/dolphin:discord-presence - Enables Discord Rich Presence, show the current game on Discord
games-emulation/dolphin:evdev - Enable evdev input support
games-emulation/dolphin:llvm - Enables LLVM support, for disassembly
games-emulation/dolphin:log - Increase logging output
games-emulation/dolphin:mgba - Enables GBA controllers emulation using libmgba.
games-emulation/dosbox:core-inline - Enable memory-increasing inlines for better performance but requiring more build time
games-emulation/dosbox:glide - Enable unofficial Glide emulation via media-libs/openglide
games-emulation/dosbox-staging:dynrec - Use recompiling cpu core instead of dynamic x86/x64 specific cpu core
games-emulation/dosbox-staging:fluidsynth - use media-sound/fluidsynth for MIDI emulation
games-emulation/dosbox-staging:mt-32 - use media-libs/munt-mt32emu for MT-32 emulation
games-emulation/dosbox-staging:network - Enable networking features (modem, ipx)
games-emulation/dosbox-staging:screenshot - Enable screenshots of rendered output using media-libs/sdl2-image
games-emulation/dosbox-staging:slirp - Enable Ethernet emulation using net-libs/libslirp
games-emulation/fceux:archive - Use app-arch/libarchive for 7zip support
games-emulation/fceux:ffmpeg - Use media-video/ffmpeg for video recording
games-emulation/fceux:x265 - Use media-libs/x265 for video recording (HEVC)
games-emulation/gambatte-jg:jgmodule - Build module for The Jolly Good API
games-emulation/gambatte-jg:shared - Build shared library
games-emulation/generator:sdlaudio - Enable SDL Audio
games-emulation/hatari:capsimage - Use dev-libs/spsdeclib to read .IPF, .RAW, and .CTR disk images
games-emulation/hatari:capstone - Use dev-libs/capstone for disassembly output in the debugger
games-emulation/hatari:portmidi - Use media-libs/portmidi as an alternative MIDI backend
games-emulation/higan:gtk - Use GTK3 (Qt5 if disabled) user interface backend
games-emulation/jgemu:bsnes - Install bsnes for Super Nintendo
games-emulation/jgemu:cega - Install Cega for SG-1000, Sega Master System and Game Gear
games-emulation/jgemu:gambatte - Install Gambatte for Game Boy and Game Boy Color
games-emulation/jgemu:geolith - Install Geolith for Neo Geo AES/MVS
games-emulation/jgemu:jollycv - Install JollyCV for ColecoVision
games-emulation/jgemu:mednafen - Install Mednafen for Atari Lynx, Nintendo Virtual Boy, NEC PC Engine, NEC SuperGrafx, Sony PlayStation, Sega Saturn, Super Nintendo, Neo Geo Pocket and WonderSwan
games-emulation/jgemu:melonds - Install MelonDS for Nintendo DS
games-emulation/jgemu:mgba - Install mGBA for Game Boy Advance
games-emulation/jgemu:nestopia - Install Nestopia for Nintendo Entertainment System
games-emulation/jgemu:prosystem - Install ProSystem for Atari 7800
games-emulation/jgemu:sameboy - Install SameBoy for Game Boy and Game Boy Color
games-emulation/jgemu:vecx - Install Vecx for Vectrex
games-emulation/m64py:7z - Ensure support for .7z archives.
games-emulation/m64py:rar - Ensure support for .rar archives.
games-emulation/mgba:discord - Enable Discord RPC support
games-emulation/mgba:elf - Enable the use of elf utils via dev-libs/elfutils
games-emulation/mgba:gles3 - Build OpenGL ES 3.x RenderSystem
games-emulation/mgba:libretro - Build libretro port
games-emulation/mupen64plus:audio-sdl - Enable SDL audio plugin.
games-emulation/mupen64plus:input-sdl - Enable SDL input plugin.
games-emulation/mupen64plus:rsp-hle - Enable HLE RSP plugin.
games-emulation/mupen64plus:ui-console - Enable default console UI.
games-emulation/mupen64plus:ui-m64py - Enable PyQt5 UI using games-emulation/m64py.
games-emulation/mupen64plus:video-glide64mk2 - Enable Glide64mk2 video plugin.
games-emulation/mupen64plus:video-rice - Enable Rice video plugin.
games-emulation/mupen64plus-core:debugger - Build the debugger
games-emulation/mupen64plus-core:netplay - Enable netplay functionality
games-emulation/mupen64plus-core:new-dynarec - Enable new experimental dynamic recompiler implementation (only for x86 and arm)
games-emulation/mupen64plus-core:opencv - Support video capture via media-libs/opencv
games-emulation/mupen64plus-core:osd - Overlay emulator messages using on-screen-display
games-emulation/mupen64plus-video-glide64mk2:hires - Support hi-resolution textures (requires dev-libs/boost)
games-emulation/pcsx2:clang - Use Clang compiler to build (the only compiler that is currently supported by upstream on Linux, do not report bugs if force-disabled)
games-emulation/pcsx2:sndio - Enable support for the media-sound/sndio backend
games-emulation/ppsspp:discord - Enable interfacing with a locally running Discord desktop client
games-emulation/rmg:angrylion-plugin - Enable the mupen64plus-video-angrylion-plus XMAME licensed plugin
games-emulation/rmg:discord - Enable Discord RPC support
games-emulation/rmg:dynarec - Enable the new dynarec for the mupen64plus-core plugin
games-emulation/rmg:rust-plugin - Enable the mupen64plus-input-gca rust plugin
games-emulation/snes9x:libretro - Build libretro port
games-emulation/snes9x:netplay - Enable playing ROMs over the network (not recommended)
games-emulation/vbam:link - Enable GBA linking functionality
games-engines/devilutionx:sodium - Enable network packet encryption using dev-libs/libsodium
games-engines/devilutionx:zerotier - Enable ZeroTier for online public games
games-engines/exult:fluidsynth - Compile with support for FluidSynth
games-engines/exult:tools - Enable tools, usercode compiler and mods support
games-engines/fheroes2:tools - Install development tools like 82m2wav and xmi2midi.
games-engines/frobtads:tads2compiler - Build TADS2 compiler
games-engines/frobtads:tads3compiler - Build TADS3 compiler
games-engines/love:gme - Use media-libs/game-music-emu to support additional music formats
games-engines/minetest:client - Build Minetest client
games-engines/minetest:leveldb - Enable LevelDB backend
games-engines/minetest:prometheus - Enable prometheus client support
games-engines/minetest:redis - Enable redis backend via dev-libs/hiredis
games-engines/minetest:server - Build Minetest server
games-engines/minetest:spatial - Enable SpatialIndex AreaStore backend
games-engines/odamex:client - Build client target
games-engines/odamex:hidpi - Use bundled FLTK 1.4, which has better support for HiDPI screens
games-engines/odamex:master - Build master server target (advertises odamex server list)
games-engines/odamex:odalaunch - Build the wxWidgets based launcher
games-engines/odamex:portmidi - Enable PortMidi support
games-engines/odamex:server - Build server target
games-engines/openmw:devtools - Install development tools like bsatool, esmtool and opencs.
games-engines/openmw:osg-fork - Use OpenSceneGraph forked by OpenMW instead of upstream OSG.
games-engines/scummvm:fluidsynth - compile with support for fluidsynth
games-engines/scummvm:fribidi - Support for right-to-left languages via dev-libs/fribidi
games-engines/scummvm:mpeg2 - enable mpeg2 codec for cutscenes
games-engines/scummvm:net - enable cloud support via media-libs/sdl2-net
games-engines/scummvm:sndio - Enable support for MIDI music using media-sound/sndio
games-engines/scummvm:unsupported - enable unsupported and/or broken game engines (you're on your own)
games-engines/scummvm-tools:tremor - Enable tremor, a fixed-point version of the Ogg Vorbis decoder
games-engines/solarus:doc - Install doxygen developer documentation.
games-fps/alienarena:vidmode - Link against x11-libs/libXxf86vm. Required for full-screen support.
games-fps/chocolate-doom:midi - basic support for MIDI files
games-fps/darkplaces:cdsound - Enables using CD audio in the engine
games-fps/darkplaces:demo - Uses the demo data from quake1 (quake1-demodata)
games-fps/darkplaces:lights - Install and setup the updated light maps
games-fps/darkplaces:textures - Install and setup the updated textures
games-fps/doomsday:demo - Install launcher dor doom1.wad from games-fps/doom-data
games-fps/doomsday:display-mode - Include the ability to set the display mode
games-fps/doomsday:fluidsynth - Build the FluidSynth sound driver
games-fps/doomsday:freedoom - Install launcher for doom1.wad from games-fps/freedoom
games-fps/doomsday:tools - Build additional tools such as doomsday-shell, md2tool and texc
games-fps/duke3d-data:demo - Extract data files from the shareware version.
games-fps/duke3d-data:gog - Extract data files from the GOG.com version.
games-fps/eduke32:duke3d - Install the Duke Nukem 3D data files, provided by games-fps/duke3d-data.
games-fps/eduke32:fluidsynth - Install media-libs/sdl2-mixer with fluidsynth support.
games-fps/eduke32:hrp - Install the Duke Nukem 3D High Resolution Pack.
games-fps/eduke32:offensive - Install the Duke Nukem 3D XXX Pack.
games-fps/eduke32:opl - Install the Duke Nukem 3D OPL music files.
games-fps/eduke32:psx - Install the Duke Nukem 3D PSX high resolution voice files.
games-fps/eduke32:sc-55 - Install the Duke Nukem 3D Roland SC-55 music files.
games-fps/eduke32:sdk - Install the SDK files.
games-fps/eduke32:server - Enable support for multiplayer.
games-fps/eduke32:tools - Install the support tools for mapster32.
games-fps/eduke32:voidsw - Enable support for Shadow Warrior (Classic) through VoidSW.
games-fps/eduke32:voxels - Install the Duke Nukem 3D Voxels Pack.
games-fps/eduke32:vpx - Enable support for media-libs/libvpx.
games-fps/eduke32:xmp - Enable support for media-libs/exempi.
games-fps/gzdoom:non-free - Enable non-free components
games-fps/gzdoom:swr - Enable software renderer
games-fps/nexuiz:maps - Install the community map pack
games-fps/prboom-plus:dumb - Enable support for various tracker-style music formats via media-libs/dumb
games-fps/prboom-plus:fluidsynth - Enable support for MIDI via media-sound/fluidsynth
games-fps/prboom-plus:net - Enable support for network play
games-fps/prboom-plus:portmidi - Enable support for MIDI via media-libs/portmidi
games-fps/prboom-plus:sdl2-image - Enable support for high-resolution texture support via media-libs/sdl2-image
games-fps/prboom-plus:sdl2-mixer - Enable support for MIDI via media-libs/sdl2-mixer
games-fps/prboom-plus:server - Build PrBoom-Plus server
games-fps/quake2-icculus:demo - Install the demo files (quake2-demodata) and configure for use
games-fps/quake2-icculus:qmax - Build the pretty version (quake max)
games-fps/quake2-icculus:rogue - Build support for the 'Ground Zero' Mission Pack (rogue)
games-fps/quake2-icculus:xatrix - Build support for the 'The Reckoning' Mission Pack (xatrix)
games-fps/quakeforge:client - Build Normal and QuakeWorld clients alongside the servers
games-fps/quakeforge:wildmidi - Use media-sound/wildmidi for midi support
games-fps/redeclipse:dedicated - Install only as a dedicated game server
games-fps/rott:demo - Install the shareware version
games-fps/sauerbraten:server - Compile server support
games-fps/serioussam:alsa - Enable support ALSA sound.
games-fps/serioussam:pipewire - Enable support for pipewire.
games-fps/serioussam:vulkan - Enable support Vulkan render.
games-fps/turtlearena:mumble - Adds player-location (positional audio) support to VoIP
games-fps/turtlearena:server - Build server target
games-fps/turtlearena:voice - Adds VoIP support
games-fps/urbanterror:altgamma - Alternative way for gamma setting with modesetting driver
games-fps/urbanterror:client - Build binary for client (includes code for non-dedicated server)
games-fps/urbanterror:mumble - Use Mumble for ingame VoIP (experimental)
games-fps/urbanterror:server - Build binary for dedicated server
games-fps/urbanterror:skeetshootmod - Build support for skeetshoot mod for specific maps
games-fps/urbanterror:voip - Use ioq3 ingame VoIP (experimental)
games-fps/worldofpadman:maps - Install extra maps (PadPack)
games-fps/xonotic:ode - Enable support for physics engine from dev-games/ode
games-fps/yamagi-quake2:client - Build client
games-fps/yamagi-quake2:ctf - Build support for the 'Capture The Flag' addon
games-fps/yamagi-quake2:gles - Build GLES3 renderer
games-fps/yamagi-quake2:rogue - Build support for the 'Ground Zero' Mission Pack
games-fps/yamagi-quake2:softrender - Build software renderer
games-fps/yamagi-quake2:vulkan - Build experimental Vulkan renderer
games-fps/yamagi-quake2:xatrix - Build support for the 'The Reckoning' Mission Pack
games-kids/gcompris:kiosk - Enable kiosk mode by default (for use by small children or on a self-service host machine)
games-misc/ponysay:fish-completion - Enable fish completion support
games-misc/ponysay:non-free - Install non-free ponies (i.e. from the MLP franchise)
games-misc/xcowsay:fortune - Enable support for fortune cookies via games-misc/fortune-mod
games-mud/tf:atcp - enable ATCP support.
games-mud/tf:gmcp - enable GMCP support.
games-mud/tf:option102 - enable telnet option 102 support.
games-puzzle/gnome-tetravex:cli - Build the gnome-tetravex-cli command-line interface
games-puzzle/gnome-tetravex:gui - Build the gnome-tetravex graphical Gtk user interface
games-puzzle/nightsky:bundled-libs - Use the upstream provided bundled libraries.
games-puzzle/pingus:music - Enable playing of background music
games-puzzle/tiny-and-big:bundled-libs - Use the upstream provided bundled libraries.
games-puzzle/world-of-goo-gog:bundled-libs - Use bundled libs
games-puzzle/world-of-goo-hb:bundled-libs - Use bundled libs
games-roguelike/FTL:bundled-libs - Use bundled libraries.
games-roguelike/angband:sound - Enable and install sounds
games-roguelike/stone-soup:advpng - Use alternate png optimization.
games-roguelike/stone-soup:ncurses - Enable for console (uses ncurses) based build. (can be enabled on top of tiles)
games-roguelike/stone-soup:tiles - Enable for graphical (tiled) build. (can be enabled on top of ncurses)
games-roguelike/tomenet:client - Compile client
games-roguelike/tomenet:server - Compile server
games-rpg/daimonin-client:music - Install extra music
games-rpg/deponia-doomsday:bonus - Install the bonus content (Art Book, Concept Art, Soundtrack)
games-rpg/drascula:sound - Install optional audio files
games-rpg/dreamweb:doc - High-resolution scans of the written material in the original UK game box
games-rpg/freedroidrpg:devtools - Compile the additional dev tools
games-rpg/freedroidrpg:profile - Enable the integration of the ingame real-time profiler
games-rpg/hatoful-boyfriend:gui - Install the GUI for configuring screen resolution and input
games-rpg/hatoful-boyfriend-holiday-star:gui - Install the GUI for configuring screen resolution and input
games-rpg/kqlives:cheats - Enable cheating mode
games-rpg/manaplus:mumble - Enable support for voice chat
games-rpg/manaplus:pugixml - Use dev-libs/pugixml for XML parsing isntead of dev-libs/libxml2
games-rpg/manaplus:sdl2 - Use libsdl2 instead of libsdl
games-rpg/the-longest-journey:hd - Install high definition backgrounds and sprites
games-rpg/the-longest-journey:hd-fmv - Install upscaled full motion videos
games-rpg/to-the-moon:bundled-libs - Use bundled libraries
games-simulation/corsix-th:midi - Adds support for background MIDI music via SDL_mixer
games-simulation/corsix-th:tools - Build tools for decoding RNC files
games-simulation/flightgear:dbus - Enable screensaver DBus interaction
games-simulation/flightgear:gdal - Enable alternative terrain engine based on pagedLOD using sci-libs/gdal
games-simulation/flightgear:qt5 - Build Qt5 launcher application
games-simulation/flightgear:udev - Enable event-based Input devices through virtual/udev
games-simulation/flightgear:utils - Build various utilities (fgpanel, fgviewer among others)
games-simulation/openrct2:scripting - Enable the dev-lang/duktape scripting engine for executing user scripts.
games-simulation/openttd:allegro - Add support for Allegro
games-simulation/openttd:dedicated - Build only the openttd server, and not the client.
games-simulation/openttd:fluidsynth - Compile with support for FluidSynth
games-simulation/openttd:lzo - Enables LZO compression for savegames. This is only needed to load extremely old savegames. (versions before 0.2)
games-simulation/openttd:openmedia - Enables the free open media sets: OpenGFX, OpenSFX, OpenMSX, removing the requirement for proprietary TTD assets to play OpenTTD.
games-simulation/simutrans:midi - support for background MIDI music via media-sound/fluidsynth
games-simulation/simutrans:minimal - Don't install any PakSets (scenario data)
games-simulation/simutrans-paksets:128 - Install higher resolution scenario data (128 px graphics)
games-simulation/simutrans-paksets:comic192 - Install comic-like scenario data (192 px graphics)
games-simulation/simutrans-paksets:cs128 - Install Czech-Slovak scenario data (128 px graphics)
games-simulation/simutrans-paksets:excentrique48 - Install eccentric scenario data (48 px graphics)
games-simulation/simutrans-paksets:german128 - Install German scenario data (128 px graphics)
games-simulation/simutrans-paksets:nippon64 - Install Nippon scenario data (64 px graphics)
games-simulation/train-valley:gui - Install the GUI for configuring screen resolution and input
games-sports/speed-dreams:osggraph - Enable the new work-in-progress 3D engine using dev-games/openscenegraph
games-sports/speed-dreams:webstats - Enable support for sending racing statistics to a web server (experimental)
games-sports/xmoto:double-precision - more precise calculations at the expense of speed
games-strategy/0ad:editor - Include Atlas scenario editor projects
games-strategy/0ad:lobby - Enable the use of net-libs/gloox and the multiplayer lobby
games-strategy/0ad:nvtt - Support for some uncompressed data formats (might be needed for some mods)
games-strategy/colobot:devbuild - TODO
games-strategy/colobot:tools - Build tools
games-strategy/colobot-data:music - Enable music support
games-strategy/freeciv:gtk3 - Build the gtk3 client
games-strategy/freeciv:gtk4 - Build the gtk4 client
games-strategy/freeciv:json - Add support for JSON via dev-libs/jansson
games-strategy/freeciv:mapimg - Additional mag image toolkit via media-gfx/imagemagick
games-strategy/freeciv:modpack - Build the freeciv-modpack-program to download/install mods
games-strategy/freeciv:rule-editor - Build ruleset editor
games-strategy/freeciv:server - Enable server support. Disabling this will also make it impossible to start local games.
games-strategy/freeciv:sound - Add support for sound provided by media-libs/sdl-mixer
games-strategy/freeciv:system-lua - Use dev-lang/lua instead of the bundled liblua
games-strategy/freeciv:web-server - Build the freeciv-web server in place of the freeciv server
games-strategy/freeorion:client - Build game client
games-strategy/freesynd:devtools - Build development tools
games-strategy/hedgewars:server - Enable local server
games-strategy/ja2-stracciatella:editor - Adds necessary file to run the editor
games-strategy/ja2-stracciatella:ru-gold - Support for russian gold ja2 version
games-strategy/megaglest:editor - Build map editor
games-strategy/megaglest:fribidi - Enable FriBIDi support
games-strategy/megaglest:model-viewer - Build model viewer
games-strategy/megaglest:streflop - Use the library streflop. Out of synchs may occur if not enabled.
games-strategy/megaglest:tools - Build model import/export tools
games-strategy/megaglest:unicode - Use unicode strings for wxwidgets
games-strategy/megaglest:wxuniversal - Use the wxUniversal port which implements the various GUI controls by drawing them itself
games-strategy/satellite-reign:gui - Install the GUI for configuring screen resolution and input
games-strategy/ufoai:client - Build the main game client
games-strategy/ufoai:server - Build the dedicated server
games-strategy/uqm:music - download and install original 3DO music files
games-strategy/uqm:remix - download and install remixed music files (large)
games-strategy/uqm:voice - download and install voice files (large)
games-strategy/wargus:bne - Support extracting data from the Battle.net Edition
games-strategy/warzone2100:discord - Enable Discord presence/join integration
games-strategy/wesnoth:server - Enable compilation of server
games-util/gslist:web - Enable the web interface
games-util/heroic-bin:gamescope - Run Heroic Launcher inside gamescope
games-util/lgogdownloader:gui - Enable GUI login support for passing reCAPTCHA
games-util/sc-controller:trayicon - Enable system tray icon
games-util/slade:fluidsynth - Enable MIDI software synthesis using media-sound/fluidsynth
games-util/wit:fuse - Enable image mount support via fuse
gnome-base/gdm:bluetooth-sound - Allow loading of bluetooth sound modules. This may be necessary for accessibility screen readers, but may cause bluetooth sound issues for users logging in.
gnome-base/gdm:fprint - Enables experimental fingerprint authentication using sys-auth/fprintd
gnome-base/gdm:plymouth - Enable support for smooth transition from sys-boot/plymouth
gnome-base/gnome:classic - Install gnome-extra/gnome-shell-extensions for the Gnome Shell Classic mode
gnome-base/gnome:extras - Install additional GNOME applications
gnome-base/gnome-applets:tracker - Build the tracker search bar applet
gnome-base/gnome-control-center:gnome-online-accounts - Enable configuration panel for net-libs/gnome-online-accounts accounts
gnome-base/gnome-control-center:ibus - Enable support for enhanced input methods through app-i18n/ibus
gnome-base/gnome-extra-apps:games - Install Gnome Games
gnome-base/gnome-extra-apps:share - Install the gnome-extra/gnome-user-share personal file sharing tool
gnome-base/gnome-extra-apps:shotwell - Install the media-gfx/shotwell photo manager
gnome-base/gnome-extra-apps:tracker - Install the app-misc/tracker indexer and the GNOME packages that require it
gnome-base/gnome-keyring:ssh-agent - Use GNOME Keyring to unlock SSH keys. Recommended unless you are using ECDSA or Ed25519 keys.
gnome-base/gnome-light:gnome-shell - Install gnome-base/gnome-shell and x11-wm/mutter for the standard GNOME 3 desktop mode
gnome-base/gnome-session:elogind - Support sys-auth/elogind for session tracking
gnome-base/gnome-settings-daemon:elogind - Rely on sys-auth/elogind as runtime logind provider
gnome-base/gnome-settings-daemon:modemmanager - Enable WWAN support via net-misc/modemmanager
gnome-base/gnome-settings-daemon:systemd - Rely on sys-apps/systemd as runtime logind provider
gnome-base/gnome-shell:elogind - Use sys-auth/elogind for session tracking and suspend support.
gnome-base/gnome-shell:ibus - Enable support for enhanced input methods through app-i18n/ibus
gnome-base/gnome-shell:pipewire - Use pipewire to enable the camera monitor
gnome-base/gvfs:afp - Enables support for accessing AFP (Apple Filing Protocol) network shares
gnome-base/gvfs:archive - Enables support for accessing files in archives transparently via app-arch/libarchive
gnome-base/gvfs:bluray - Enable playback of Blu-ray filesystems using media-libs/libbluray
gnome-base/gvfs:elogind - Use sys-auth/elogind for session tracking.
gnome-base/gvfs:fuse - Enables fuse mount points in $HOME/.gvfs for legacy application access
gnome-base/gvfs:gnome-online-accounts - Enable configuration panel for net-libs/gnome-online-accounts accounts
gnome-base/gvfs:google - Enables support for accessing Google accounts via dev-libs/libgdata
gnome-base/gvfs:http - Enable the HTTP/DAV backend using net-libs/libsoup
gnome-base/gvfs:nfs - Enable NFS client support via net-fs/libnfs.
gnome-base/gvfs:udev - Enable udev base replacement code for cdda feature
gnome-base/libgnomecanvas:glade - Enable glade support
gnome-base/librsvg:tools - Build svg viewer tool
gnome-base/nautilus:cloudproviders - Enable the cloudproviders support
gnome-base/nautilus:gstreamer - Enable the Audio/Video file properties page
gnome-base/nautilus:previewer - Use gnome-extra/sushi to preview files from the file mananger
gnome-base/nautilus:sendto - Enable the nautilus-sendto extension to send files to various locations/devices
gnome-extra/cinnamon:internal-polkit - Use Cinnamon's internal polkit agent instead of gnome-extra/polkit-gnome. This does not currently support multi-user fast switching.
gnome-extra/cinnamon-control-center:modemmanager - Enable support for mobile broadband devices using net-misc/modemmanager
gnome-extra/cjs:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
gnome-extra/eiciel:nautilus - Build gnome-base/nautilus extension
gnome-extra/evolution-data-server:berkdb - sys-libs/db support needed to migrate old (pre-3.13 evolution versions) addressbook data
gnome-extra/evolution-data-server:gnome-online-accounts - Enable net-libs/gnome-online-accounts based Google authentication support
gnome-extra/evolution-data-server:oauth-gtk3 - Enable internal OAuth2 authentication for GTK+3 applications (libedataserverui-*.so) support for Google and Outlook.com. If gnome-online-accounts is enabled and used, this is not necessary, but both can be supported at the same time with different setup at runtime
gnome-extra/evolution-data-server:oauth-gtk4 - Enable internal OAuth2 authentication for GTK 4 applications (libedataserverui4-*.so) support for Google and Outlook.com. If gnome-online-accounts is enabled and used, this is not necessary, but both can be supported at the same time with different setup at runtime
gnome-extra/evolution-data-server:weather - Enable optional weather calendar support
gnome-extra/gnome-commander:gsf - Add metadata support for OLE, OLE2 and ODF
gnome-extra/gnome-commander:pdf - Add metadata support for PDF
gnome-extra/gnome-commander:taglib - Add metadata support for ID3, Vorbis, FLAC and APE
gnome-extra/gnome-contacts:gnome-online-accounts - Enable net-libs/gnome-online-accounts based Google authentication support
gnome-extra/gnome-network-displays:firewalld - Install firewalld zones
gnome-extra/gnome-shell-extension-gsconnect:nautilus - Install Nautilus extension for sending files via GSConnect
gnome-extra/gnome-software:firmware - Enable firmware update support through sys-apps/fwupd
gnome-extra/gnome-software:flatpak - Enable support for flatpak applications using sys-apps/flatpak
gnome-extra/gnome-software:snap - Enable support for snap packages using app-containers/snapd
gnome-extra/gnome-software:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
gnome-extra/gnome-system-monitor:systemd - Display sys-apps/systemd metadata, e.g. unit names, for running processes
gnome-extra/libgda:canvas - Enable support for x11-libs/goocanvas
gnome-extra/libgda:http - Enable embedded net-libs/libsoup based server
gnome-extra/libgda:json - Enable support for JSON format
gnome-extra/libgda:mdb - Enable support for Microsoft Access database using app-office/mdbtools
gnome-extra/libgda:sourceview - Enable support for x11-libs/gtksourceview
gnome-extra/libgsf:gtk - Enable use of gdk in thumbnailer
gnome-extra/nemo:tracker - Add support for app-misc/tracker search
gnome-extra/nm-applet:modemmanager - Enable support for mobile broadband devices using net-misc/modemmanager
gnome-extra/nm-applet:teamd - Enable teamd configuration editor
gnustep-apps/gemas:projectcenter - Build and install plugin for gnustep-apps/projectcenter
gnustep-apps/gworkspace:gwmetadata - Enable the metadata indexing and searching system
gnustep-apps/sogo:activesync - Build the ActiveSync support code
gnustep-apps/sogo:sodium - Enable support for Argon2 password schemes using dev-libs/libsodium
gnustep-base/gnustep-back-art:xim - Enable X11 XiM input method
gnustep-base/gnustep-back-cairo:xim - Enable X11 XiM input method
gnustep-base/gnustep-back-xlib:xim - Enable X11 XiM input method
gnustep-base/gnustep-make:libobjc2 - Enables use of the GNUstep Objective-C runtime (gnustep-base/libobjc2) with non-fragile ABI and sys-devel/clang compiler
gnustep-base/gnustep-make:native-exceptions - Enables use of the native Objective-C exception support (@try/@catch/@finally) built-in objective-c exceptions with compilers that support it
gui-apps/foot:grapheme-clustering - Enable grapheme clustering support
gui-apps/grim:jpeg - Enable JPEG support.
gui-apps/gtkgreet:layershell - Enable layer shell support
gui-apps/kanshi:varlink - Enable remote control with varlink
gui-apps/mako:icons - Enable support for icons
gui-apps/swaybg:gdk-pixbuf - Support image types other than PNG
gui-apps/swayidle:elogind - Enable support for rootless session via elogind
gui-apps/swaylock:gdk-pixbuf - Enable additional image format support via the x11-libs/gdk-pixbuf library
gui-apps/waybar:evdev - Enable libevdev support for evdev related features
gui-apps/waybar:experimental - Enable experimental features, such as Bluetooth battery reporting
gui-apps/waybar:libinput - Enable libinput support for libinput related features
gui-apps/waybar:logind - Enable support for logind (bluetooth and idle inhibit)
gui-apps/waybar:mpd - Enable support for the Music Player Daemon
gui-apps/waybar:mpris - Enable support for mpris
gui-apps/waybar:network - Enable libnl support for network related features
gui-apps/waybar:pipewire - Enable support for pipewire
gui-apps/waybar:pulseaudio - Enable support for volume control via PulseAudio
gui-apps/waybar:sndio - Enable support for volume control via sndio
gui-apps/waybar:tray - Enable support for tray
gui-apps/waybar:wifi - Enable support for wifi/rfkill
gui-apps/waypipe:dmabuf - Use DMABUFs for data exchange and hardware decoding
gui-apps/waypipe:ffmpeg - Link with ffmpeg to allow buffer displays using video streams
gui-apps/waypipe:systemtap - Enable SystemTap/DTrace tracing
gui-apps/wayvnc:gbm - enable GPU-side screencopy (experimental)
gui-apps/wayvnc:tracing - Trace kernel and memory calls
gui-apps/wf-recorder:pipewire - Enable support for audio capture via media-video/pipewire.
gui-apps/wf-recorder:pulseaudio - Enable support for audio capture via PulseAudio
gui-libs/gtk:broadway - Enable the GDK Broadway backend.
gui-libs/gtk:cloudproviders - Enable GtkPlacesSidebar to access cloud services
gui-libs/gtk:colord - Use x11-misc/colord for color management in printing
gui-libs/gtk:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
gui-libs/gtksourceview:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
gui-libs/libdecor:dbus - Enable dbus to query current cursor theme
gui-libs/libdecor:examples - Build and install examples
gui-libs/libdecor:gtk - Build GTK plugin
gui-libs/libhandy:glade - Install module and catalog for dev-util/glade
gui-libs/neatvnc:examples - Build and install examples
gui-libs/neatvnc:gbm - Enable support for the Generic Buffer Manager (gbm)
gui-libs/neatvnc:h264 - Enable H.264 encoding
gui-libs/neatvnc:jpeg - Enable JPEG compression
gui-libs/neatvnc:tracing - Trace kernel and memory calls
gui-libs/neatvnc:websockets - Enable websockets support
gui-libs/vte:icu - Enable legacy charset support using dev-libs/icu
gui-libs/vte:systemd - Support moving terminal child processes to their own systemd user scopes to avoid terminal getting killed due to child causing OOM
gui-libs/vte-common:systemd - Support moving terminal child processes to their own systemd user scopes to avoid terminal getting killed due to child causing OOM
gui-libs/wlroots:X - Enable support for X11 applications (XWayland)
gui-libs/wlroots:drm - Enable Direct Rendering Management
gui-libs/wlroots:libinput - Enable support for input devices via dev-libs/libinput
gui-libs/wlroots:liftoff - Enable support for libliftoff KMS plane backend
gui-libs/wlroots:session - Enable session support (is required for DRM and libinput)
gui-libs/wlroots:x11-backend - Enable support for handling input/output devices through x11-libs/libxcb
gui-libs/wlroots:xcb-errors - Better error reporting when using xwayland
gui-libs/xdg-desktop-portal-wlr:elogind - Enable support for rootless session via elogind
gui-wm/gamescope:libei - Enable emulated input using dev-libs/libei
gui-wm/gamescope:pipewire - Enable screen capture via PipeWire
gui-wm/gamescope:wsi-layer - Enable the WSI layer (required for HDR)
gui-wm/hyprland:legacy-renderer - Enable legacy renderer
gui-wm/sway:X - Enable support for X11 applications (XWayland)
gui-wm/sway:swaybar - Install 'swaybar': sway's status bar component
gui-wm/sway:swaynag - Install 'swaynag': shows a message with buttons
gui-wm/sway:tray - Enable support for StatusNotifierItem tray specification
gui-wm/sway:wallpapers - Install sway's default wallpaper image
gui-wm/wayfire:X - Enable support for X11 applications (XWayland).
gui-wm/wayfire:gles3 - Enable OpenGL ES 3.x Features.
kde-apps/akonadi:designer - Install plugin for dev-qt/designer
kde-apps/akonadi:tools - Install tools for developers and testing
kde-apps/akonadi:webengine - Enable support for system-wide defined KAccounts
kde-apps/analitza:eigen - Enable dev-cpp/eigen mathematical templates support
kde-apps/ark:zip - Enable ZIP archive support via dev-libs/libzip
kde-apps/cantor:R - Enable dev-lang/R backend support
kde-apps/cantor:julia - Enable dev-lang/julia backend support
kde-apps/cantor:qalculate - Enable sci-libs/libqalculate backend support
kde-apps/gwenview:activities - Enable kactivities support
kde-apps/gwenview:fits - Enable support for NASA's sci-libs/cfitsio library
kde-apps/gwenview:mpris - Enable support for MPRIS2 interface, requiring dev-qt/qtdbus as dependency.
kde-apps/gwenview:share - Enable support for a share menu using kde-frameworks/purpose
kde-apps/k3b:webengine - Use dev-qt/qtwebengine for fancy k3bdiskinfoview
kde-apps/kalarm:pim - Enable birthday import, email functions etc. using kde-apps/akonadi
kde-apps/kalzium:editor - Enable the embedded molecule editor/viewer
kde-apps/kalzium:solver - Enable the equation solver
kde-apps/kate-addons:filebrowser - Enable File System browser tool view
kde-apps/kate-addons:lspclient - Enable LSP (Language Server Protocol) client plugin
kde-apps/kate-addons:projects - Enable Project plugin for executing queries on SQL DBs
kde-apps/kate-addons:snippets - Enable Snippets Tool View plugin to manage or download code snippets
kde-apps/kate-addons:sql - Enable SQL plugin for executing queries on SQL DBs
kde-apps/kde-apps-meta:accessibility - Pull in kde-apps/kdeaccessibility-meta packages
kde-apps/kde-apps-meta:admin - Pull in kde-apps/kdeadmin-meta packages
kde-apps/kde-apps-meta:education - Pull in kde-apps/kdeedu-meta packages
kde-apps/kde-apps-meta:games - Pull in kde-apps/kdegames-meta packages
kde-apps/kde-apps-meta:graphics - Pull in kde-apps/kdegraphics-meta packages
kde-apps/kde-apps-meta:multimedia - Pull in kde-apps/kdemultimedia-meta packages
kde-apps/kde-apps-meta:network - Pull in kde-apps/kdenetwork-meta packages
kde-apps/kde-apps-meta:pim - Pull in KDE PIM suite
kde-apps/kde-apps-meta:sdk - Pull in developer-specific meta-packages
kde-apps/kde-apps-meta:utils - Pull in kde-apps/kdeutils-meta packages
kde-apps/kdeadmin-meta:cron - Installs KDE application for virtual/cron configuration
kde-apps/kdecore-meta:share - Install kde-frameworks/purpose for share file context menu actions in kde-apps/dolphin
kde-apps/kdecore-meta:webengine - Enable www-client/falkon which depends on dev-qt/qtwebengine
kde-apps/kdeedu-meta:webengine - Enable packages requiring dev-qt/qtwebengine
kde-apps/kdegraphics-meta:color-management - Enable color management via media-libs/opencolorio
kde-apps/kdegraphics-meta:screencast - Pull in kde-apps/spectacle for screenshot/screenrecording support
kde-apps/kdegraphics-meta:webengine - Enable page scanning support via media-gfx/skanpage
kde-apps/kdemultimedia-meta:cdrom - Include packages for optical discs
kde-apps/kdenetwork-meta:bittorrent - Pull in net-p2p/ktorrent for BitTorrent protocol support
kde-apps/kdenetwork-meta:dropbox - Enable support for Dropbox in kde-apps/dolphin via kde-apps/dolphin-plugins-dropbox
kde-apps/kdenetwork-meta:samba - Enable support for net-fs/samba file sharing plugin from within file properties
kde-apps/kdenetwork-meta:screencast - Pull in kde-apps/krfb for Plasma desktop sharing support
kde-apps/kdenetwork-meta:webengine - Enable support for Google Drive integration via kde-misc/kio-gdrive
kde-apps/kdenlive:designer - Build plugins for dev-qt/designer
kde-apps/kdepim-addons:importwizard - Enable additional import plugins for kde-apps/akonadi-import-wizard
kde-apps/kdepim-addons:markdown - Enable Markdown support via app-text/discount
kde-apps/kdepim-meta:bogofilter - Install mail-filter/bogofilter for spam filter support in kde-apps/kmail
kde-apps/kdepim-meta:clamav - Install app-antivirus/clamav for virus detection support in kde-apps/kmail
kde-apps/kdepim-meta:spamassassin - Install mail-filter/spamassassin for spam filter support in kde-apps/kmail
kde-apps/kdesdk-meta:git - Enable support for Git VCS in kde-apps/dolphin via kde-apps/dolphin-plugins-git
kde-apps/kdesdk-meta:mercurial - Enable support for Mercurial VCS in kde-apps/dolphin via kde-apps/dolphin-plugins-mercurial
kde-apps/kdesdk-meta:subversion - Enable support for Apache Subversion VCS in kde-apps/dolphin via kde-apps/dolphin-plugins-subversion
kde-apps/kdesdk-meta:webengine - Enable dev-util/kdevelop, requiring dev-qt/qtwebengine
kde-apps/kdeutils-meta:7zip - Install app-arch/p7zip for 7zip archive support in kde-apps/ark
kde-apps/kdeutils-meta:gpg - Install kde-apps/kgpg which depends on kde-apps/akonadi
kde-apps/kdeutils-meta:lrz - Install app-arch/lrzip for LRZ archive support in kde-apps/ark
kde-apps/kdeutils-meta:rar - Install one of app-arch/rar, app-arch/unrar or app-arch/unar for RAR archive support in kde-apps/ark
kde-apps/kdeutils-meta:webengine - Install app-editors/ghostwriter and kde-apps/kimagemapeditor, requiring dev-qt/qtwebengine
kde-apps/kget:bittorrent - Enable bittorrent transfer plugin through net-libs/libktorrent
kde-apps/kget:gpg - Enable signature verification by GpgME++ via app-crypt/gpgme
kde-apps/kget:mms - Enable MMS (Microsoft Media Server) plugin through media-libs/libmms
kde-apps/kig:geogebra - Support files created by sci-mathematics/geogebra-bin
kde-apps/kig:scripting - Support Python scripting
kde-apps/kio-extras:X - Enable support for XCursor thumbnails via x11-libs/libX11
kde-apps/kio-extras:activities - Enable activities KIO worker and fileitem plugin
kde-apps/kio-extras:ios - Enable AFC (Apple File Conduit) KIO worker for iOS devices support
kde-apps/kio-extras:kf6compat - Disable components colliding with KF6, depend on KF6 components instead
kde-apps/kio-extras:man - Enable manpages KIO worker
kde-apps/kio-extras:nfs - Enable NFS support using net-libs/libtirpc
kde-apps/kio-extras:phonon - Enable file audio preview plugin using media-libs/phonon
kde-apps/kio-extras:sftp - Enable SFTP protocol support using net-libs/libssh
kde-apps/kio-extras:taglib - Enable audio thumbnails via media-libs/taglib
kde-apps/kleopatra:pim - Enable WKS publishing support using kde-apps/kmail
kde-apps/kmag:keyboardfocus - Enable keyboard focus tracking
kde-apps/konqueror:activities - Enable kactivities support
kde-apps/krdc:activities - Enable Plasma Activities support via kde-plasma/plasma-activities
kde-apps/ksystemlog:kdesu - Run as root using kdesu from kde-plasma/kde-cli-tools
kde-apps/ktouch:X - Enable support for X11 Keyboard Layout Detection
kde-apps/kwave:qtmedia - Enable playback via Qt5Multimedia
kde-apps/libkdepim:designer - Build plugins for dev-qt/designer
kde-apps/libkgapi:kf6compat - Disable components colliding with KF6, depend on KF6 components instead
kde-apps/libksane:kwallet - Enable encrypted storage of passwords with kde-frameworks/kwallet
kde-apps/mailcommon:designer - Build plugins for dev-qt/designer
kde-apps/marble:aprs - Enable support for APRS data sources
kde-apps/marble:designer - Install plugin for dev-qt/designer
kde-apps/marble:geolocation - Enable position information via dev-qt/qtpositioning
kde-apps/marble:pbf - Enable OpenStreetMap PBF file support via dev-libs/protobuf
kde-apps/marble:phonon - Enable sound support via media-libs/phonon
kde-apps/marble:shapefile - Enable support for ESRI shapefiles
kde-apps/marble:webengine - Use dev-qt/qtwebengine for embedded web browser
kde-apps/okular:crypt - Enable support for password-encrypted documents via kde-frameworks/kwallet
kde-apps/okular:epub - Enable E-Book support via app-text/ebook-tools
kde-apps/okular:markdown - Enable Markdown support via app-text/discount
kde-apps/okular:mobi - Enable mobipocket support via kde-apps/kdegraphics-mobipocket
kde-apps/okular:phonon - Enable sound support via media-libs/phonon
kde-apps/okular:qml - Install Okular Qml components
kde-apps/okular:share - Enable support for a share menu using kde-frameworks/purpose
kde-apps/parley:webengine - Build browser integration for the editor, requires dev-qt/qtwebengine
kde-apps/pimcommon:designer - Build plugins for dev-qt/designer
kde-apps/spectacle:share - Enable support for a share menu using kde-frameworks/purpose
kde-apps/step:qalculate - Enable the libqalculate library for unit conversion
kde-apps/thumbnailers:blender - Enable blender thumbnail generation using kde-frameworks/karchive
kde-apps/thumbnailers:gettext - Enable PO file thumbnail generation using kde-apps/kdesdk-thumbnailers
kde-apps/thumbnailers:mobi - Enable mobipocket thumbnail generation using kde-apps/kdegraphics-mobipocket
kde-apps/thumbnailers:video - Enable video thumbnail generation using kde-apps/ffmpegthumbs
kde-apps/yakuake:absolute-position - Use kde-plasma/kwayland for absolute window positioning in KWin
kde-frameworks/kcompletion:designer - Build plugins for dev-qt/designer
kde-frameworks/kconfig:qml - Enable QML/QtQuick support via dev-qt/qtdeclarative
kde-frameworks/kconfigwidgets:designer - Build plugins for dev-qt/designer
kde-frameworks/kfilemetadata:epub - Enable support for reading EPUB ebook metadata
kde-frameworks/kfilemetadata:mobi - Enable mobipocket support via kde-apps/kdegraphics-mobipocket
kde-frameworks/kglobalaccel:kf6compat - Disable components colliding with KF6, depend on KF6 components instead
kde-frameworks/kguiaddons:kf6compat - Disable components colliding with KF6, depend on KF6 components instead
kde-frameworks/kiconthemes:designer - Build plugins for dev-qt/designer
kde-frameworks/kimageformats:eps - Support the EPS graphics file format
kde-frameworks/kinit:caps - Capabilities support for improved security and better OOM handling
kde-frameworks/kio:designer - Build plugins for dev-qt/designer
kde-frameworks/kio:kwallet - Enable permanent storage of passwords for kpasswdserver with kde-frameworks/kwallet
kde-frameworks/kitemmodels:qml - Enable QML support via dev-qt/qtdeclarative
kde-frameworks/kitemviews:designer - Build plugins for dev-qt/designer
kde-frameworks/knewstuff:designer - Build plugins for dev-qt/designer
kde-frameworks/knewstuff:opds - Enable support for the Open Publication Distribution System via kde-frameworks/syndication
kde-frameworks/knotifications:phonon - Play notification sounds via media-libs/phonon instead of media-libs/libcanberra
kde-frameworks/knotifications:qml - Enable QML support via dev-qt/qtdeclarative
kde-frameworks/knotifications:speech - Enable text-to-speech notification support
kde-frameworks/knotifyconfig:phonon - Play notification sounds via media-libs/phonon instead of media-libs/libcanberra
kde-frameworks/kplotting:designer - Build plugins for dev-qt/designer
kde-frameworks/ktexteditor:editorconfig - Enable support for EditorConfig configuration files
kde-frameworks/ktextwidgets:designer - Build plugins for dev-qt/designer
kde-frameworks/kwallet:gpg - Support wallets with GnuPG encryption in addition to the default blowfish-encrypted file
kde-frameworks/kwallet:kf6compat - Disable components colliding with KF6, depend on KF6 components instead
kde-frameworks/kwidgetsaddons:designer - Build plugins for dev-qt/designer
kde-frameworks/kxmlgui:designer - Build plugins for dev-qt/designer
kde-frameworks/networkmanager-qt:teamd - Enable Teamd control support
kde-frameworks/prison:qml - Enable QML/QtQuick support via dev-qt/qtdeclarative
kde-frameworks/purpose:kaccounts - Enable support for system-wide defined KAccounts
kde-frameworks/purpose:webengine - Enable support for system-wide defined KAccounts
kde-frameworks/sonnet:aspell - Enable the app-text/aspell spell-checking backend
kde-frameworks/sonnet:designer - Build plugins for dev-qt/designer
kde-frameworks/sonnet:hunspell - Enable the app-text/hunspell spell-checking backend
kde-frameworks/sonnet:qml - Enable QML/QtQuick support via dev-qt/qtdeclarative
kde-misc/kdeconnect:X - Enable remote input mousepad plugin using x11-libs/libfakekey
kde-misc/kdeconnect:pulseaudio - Enable system volume control plugin using media-libs/libpulse
kde-misc/kdeconnect:telephony - Enable telephony plugin using kde-frameworks/modemmanager-qt
kde-misc/kio-gdrive:kf6compat - Disable components colliding with KF6, depend on KF6 components instead
kde-misc/kio-gdrive:share - Enable support for a share menu using kde-frameworks/purpose
kde-misc/krename:office - Enable support for file naming based on ODF metadata
kde-misc/tellico:bibtex - Add support for bibtex importing using btparse from dev-perl/Text-BibTeX
kde-misc/tellico:discid - Add support for reading disc IDs from audio CDs
kde-misc/tellico:yaz - Add support for searching Z39.50 databases
kde-plasma/discover:firmware - Enable support for firmware upgrades using sys-apps/fwupd
kde-plasma/discover:flatpak - Enable support for flatpak repositories using sys-apps/flatpak
kde-plasma/discover:snap - Enable support for snap packages using app-containers/snapd
kde-plasma/discover:webengine - Enable webflow support using dev-qt/qtwebview and dev-qt/qtwebengine instead of default URL handler
kde-plasma/drkonqi:systemd - Enable Coredumpd integration
kde-plasma/kde-cli-tools:kdesu - Build graphical frontend for kde-frameworks/kdesu
kde-plasma/kdeplasma-addons:alternate-calendar - Support alternate calendar systems (currently Chinese or Indian) via dev-libs/icu
kde-plasma/kdeplasma-addons:share - Enable applet for quickly sharing data to a variety of sources
kde-plasma/kdeplasma-addons:webengine - Enable dictionary and web browser applets using dev-qt/qtwebengine
kde-plasma/kinfocenter:usb - Show USB device information
kde-plasma/ksystemstats:networkmanager - Enable improved backend for Network statistics using kde-frameworks/networkmanager-qt
kde-plasma/kwin:lock - Enable screen locking via kde-plasma/kscreenlocker
kde-plasma/kwin:screencast - Enable screencast portal using media-video/pipewire
kde-plasma/kwin:shortcuts - Enable global shortcuts support via kde-plasma/kglobalacceld
kde-plasma/plasma-desktop:ibus - Use ibus input method via app-i18n/ibus
kde-plasma/plasma-desktop:scim - Enable applets that use app-i18n/scim
kde-plasma/plasma-desktop:webengine - Build the OpenDesktop integration plugin
kde-plasma/plasma-firewall:firewalld - Build net-firewall/firewalld backend
kde-plasma/plasma-firewall:ufw - Build net-firewall/ufw backend
kde-plasma/plasma-login-sessions:X - Install X11 session file for Display Managers (default is Wayland if both enabled)
kde-plasma/plasma-login-sessions:wayland - Install Wayland session file for Display Managers
kde-plasma/plasma-meta:browser-integration - Enable integration with Chrome/Firefox with browser extensions
kde-plasma/plasma-meta:colord - Enable kde-plasma/kwin color management via x11-misc/colord
kde-plasma/plasma-meta:crash-handler - Pull in kde-plasma/drkonqi for assisted upstream crash reports
kde-plasma/plasma-meta:crypt - Pull in kde-plasma/plasma-vault for encrypted vaults integration
kde-plasma/plasma-meta:discover - Pull in resources management GUI; a centralised GHNS alternative and optional sys-apps/fwupd frontend
kde-plasma/plasma-meta:display-manager - Pull in a graphical display manager
kde-plasma/plasma-meta:firewall - Pull in kde-plasma/plasma-firewall for system firewall administration
kde-plasma/plasma-meta:flatpak - Pull in kde-plasma/flatpak-kcm for flatpak permissions administration
kde-plasma/plasma-meta:grub - Pull in Breeze theme for sys-boot/grub
kde-plasma/plasma-meta:gtk - Enable Breeze widget style and system settings module for GTK+
kde-plasma/plasma-meta:kwallet - Enable support for KWallet auto-unlocking via kde-plasma/kwallet-pam
kde-plasma/plasma-meta:oxygen-theme - Pull in Oxygen icons, sound theme and visual style for KDE Plasma
kde-plasma/plasma-meta:plymouth - Pull in Breeze theme for sys-boot/plymouth
kde-plasma/plasma-meta:pulseaudio - Install Plasma applet for PulseAudio volume management
kde-plasma/plasma-meta:qt5 - Pull in required packages for seamless integration of KF5/Qt5-based applications
kde-plasma/plasma-meta:sddm - Pull in the x11-misc/sddm display manager and system settings module
kde-plasma/plasma-meta:sdk - Pull in kde-plasma/plasma-sdk for Plasma development
kde-plasma/plasma-meta:smart - Pull in kde-plasma/plasma-disks for disk health monitoring
kde-plasma/plasma-meta:thunderbolt - Pull in kde-plasma/plasma-thunderbolt control center module
kde-plasma/plasma-meta:unsupported - Allow packages that are known to ruin runtime experience ** DO NOT FILE BUGS WITH THIS ENABLED **
kde-plasma/plasma-meta:wacom - Pull in kde-plasma/wacomtablet control center module
kde-plasma/plasma-meta:wallpapers - Install wallpapers for the Plasma Workspace
kde-plasma/plasma-meta:webengine - Use kde-apps/khelpcenter to access the locally installed KDE Help System Handbook
kde-plasma/plasma-meta:xwayland - Enable Wayland windows screensharing to XWayland applications via gui-apps/xwaylandvideobridge
kde-plasma/plasma-nm:openconnect - Build support for the OpenConnect VPN client
kde-plasma/plasma-nm:teamd - Enable Teamd control support
kde-plasma/plasma-workspace:appstream - Enable AppStream software metadata support
kde-plasma/plasma-workspace:geolocation - Enables dataengine providing location information
kde-plasma/plasma-workspace:policykit - Enable locale generation and Users KCM using sys-auth/polkit and sys-apps/accountsservice
kde-plasma/plasma-workspace:screencast - Enable screencast portal using kde-plasma/kpipewire
kde-plasma/plasma-workspace:telemetry - Enable User Feedback control module for kde-plasma/systemsettings
kde-plasma/plasma-workspace:wallpaper-metadata - Show metadata for image wallpaper plugin using kde-apps/libkexiv2
kde-plasma/powerdevil:brightness-control - Enable screen brightness control using app-misc/ddcutil
kde-plasma/powerdevil:caps - Capabilities support for scheduled wakeup which can wake from suspend (CAP_WAKE_ALARM)
lxqt-base/liblxqt:backlight - Enable backlight control features.
lxqt-base/lxqt-config:monitor - Build monitor settings tool
lxqt-base/lxqt-config:touchpad - Build touchpad settings tool
lxqt-base/lxqt-meta:about - Install lxqt-base/lxqt-about
lxqt-base/lxqt-meta:admin - Install lxqt-base/lxqt-admin
lxqt-base/lxqt-meta:archiver - Install app-arch/lxqt-archiver
lxqt-base/lxqt-meta:desktop-portal - Enable the LXQt sys-apps/xdg-desktop-portal backend implementation
lxqt-base/lxqt-meta:display-manager - Install a graphical display manager
lxqt-base/lxqt-meta:filemanager - Install x11-misc/pcmanfm-qt file manager
lxqt-base/lxqt-meta:lximage - Install media-gfx/lximage-qt image viewer
lxqt-base/lxqt-meta:minimal - Do not install x11-wm/openbox window manager
lxqt-base/lxqt-meta:nls - Install dev-qt/qttranslations to better support different locales
lxqt-base/lxqt-meta:powermanagement - Install lxqt-base/lxqt-powermanagement package
lxqt-base/lxqt-meta:processviewer - Install x11-misc/qps package
lxqt-base/lxqt-meta:screenshot - Install x11-misc/screengrab package
lxqt-base/lxqt-meta:sddm - Install x11-misc/sddm display manager
lxqt-base/lxqt-meta:ssh-askpass - Install lxqt-base/lxqt-openssh-askpass user password prompt tool
lxqt-base/lxqt-meta:sudo - Install lxqt-base/lxqt-sudo
lxqt-base/lxqt-meta:terminal - Install x11-terms/qterminal package
lxqt-base/lxqt-meta:trash - Install gnome-base/gvfs to enable 'trash' functionality in x11-misc/pcmanfm-qt
lxqt-base/lxqt-meta:window-manager - Install kde-plasma/kwin window manager
lxqt-base/lxqt-panel:colorpicker - Build colorpicker plugin
lxqt-base/lxqt-panel:cpuload - Build cpuload plugin
lxqt-base/lxqt-panel:desktopswitch - Build desktopswitch plugin
lxqt-base/lxqt-panel:directorymenu - Build directorymenu plugin
lxqt-base/lxqt-panel:dom - Build dom plugin
lxqt-base/lxqt-panel:kbindicator - Build kbindicator plugin
lxqt-base/lxqt-panel:mainmenu - Build mainmenu plugin
lxqt-base/lxqt-panel:mount - Build mount plugin
lxqt-base/lxqt-panel:networkmonitor - Build networkmonitor plugin
lxqt-base/lxqt-panel:quicklaunch - Build quicklaunch plugin
lxqt-base/lxqt-panel:showdesktop - Build showdesktop plugin
lxqt-base/lxqt-panel:spacer - Build spacer plugin
lxqt-base/lxqt-panel:statusnotifier - Build statusnotifier plugin
lxqt-base/lxqt-panel:sysstat - Build sysstat plugin
lxqt-base/lxqt-panel:taskbar - Build taskbar plugin
lxqt-base/lxqt-panel:tray - Build tray plugin
lxqt-base/lxqt-panel:volume - Build volume plugin
lxqt-base/lxqt-panel:worldclock - Build worldclock plugin
mail-client/aerc:notmuch - Enable support for net-mail/notmuch
mail-client/alot:doc - Install user manual and API documentation
mail-client/alpine:chappa - enhance Alpine by applying Eduardo Chappa's patches
mail-client/alpine:onlyalpine - installs only the alpine binary, so it does not collied with pico and/or pine
mail-client/alpine:passfile - Adds support for caching passwords into a file between sessions
mail-client/alpine:smime - Enable support for S/MIME
mail-client/balsa:rubrica - Adds support for rubrica addressbook
mail-client/balsa:systray - Enable System Tray Icon support
mail-client/claws-mail:archive - Enable archiving plugin
mail-client/claws-mail:bogofilter - Build mail-filter/bogofilter plugin
mail-client/claws-mail:libcanberra - Enable sound notification in connection with USE=notification
mail-client/claws-mail:libnotify - Enable notification on the desktop in connection with USE=notification
mail-client/claws-mail:litehtml - Enable dev-libs/gumbo html viewer plugin
mail-client/claws-mail:notification - Notification for new mail in different way, see also USE flags libcanberra, libindicate and libnotify
mail-client/claws-mail:oauth - Enable OAuth2 authentication support
mail-client/claws-mail:pgp - Enable PGP support
mail-client/claws-mail:python - Enable plugin for Python scripting
mail-client/claws-mail:sieve - Build plugin for sieve filter support
mail-client/claws-mail:smime - Build plugin for S/MIME support
mail-client/claws-mail:spam-report - Enable plugin for spam reporting to various services
mail-client/claws-mail:spamassassin - Build mail-filter/spamassassin plugin
mail-client/evolution:archive - Enable archives support in attachments via app-arch/gnome-autoar
mail-client/evolution:bogofilter - Build mail-filter/bogofilter plugin
mail-client/evolution:geolocation - Enable support for displaying contacts on a map inside evolution using media-libs/libchamplain
mail-client/evolution:highlight - Enable text highlighting plugin
mail-client/evolution:ldap - Enable support for fetching contacts from an LDAP or Active Directory server using net-nds/openldap
mail-client/evolution:spamassassin - Build mail-filter/spamassassin plugin
mail-client/evolution:weather - Enable optional weather calendar support
mail-client/evolution:ytnef - Enable optional TNEF attachments parser support using net-mail/ytnef
mail-client/geary:ytnef - Enable optional TNEF attachments parser support using net-mail/ytnef
mail-client/mutt:autocrypt - Enable autocrypt.org support
mail-client/mutt:berkdb - Enable sys-libs/db database backend for header caching
mail-client/mutt:gdbm - Enable sys-libs/gdbm database backend for header caching
mail-client/mutt:gpgme - Build gpgme backend to support S/MIME, PGP/MIME and traditional/inline PGP
mail-client/mutt:gsasl - Use GNU SASL via virtual/gsasl instead of Cyrus SASL (requires USE=sasl)
mail-client/mutt:hcache - Enable header cache, one database backend needs to be enabled
mail-client/mutt:lmdb - Enable dev-db/lmdb database backend for header caching
mail-client/mutt:pgp-classic - Build classic_pgp backend to support PGP/MIME and traditional/inline PGP
mail-client/mutt:pop - Enable support for POP3 mailboxes
mail-client/mutt:smime-classic - Build classic_smime backend to support S/MIME
mail-client/mutt:smtp - Enable support for direct SMTP delivery
mail-client/mutt:tokyocabinet - Enable dev-db/tokyocabinet database backend for header caching
mail-client/neomutt:asan - Enable Address sanitizer for debugging
mail-client/neomutt:autocrypt - Enable autocrypt.org support
mail-client/neomutt:berkdb - Enable BDB (Berkley DB) backend for header caching
mail-client/neomutt:gdbm - Enable GDBM (GNU dbm) backend for header caching
mail-client/neomutt:gpgme - Build gpgme backend to support S/MIME, PGP/MIME and traditional/inline PGP
mail-client/neomutt:kyotocabinet - Enable Kyoto Cabinet database backend for header caching
mail-client/neomutt:lmdb - Enable LMDB (Lightning Memory-Mapped Database) backend for header caching
mail-client/neomutt:lz4 - Add lz4 support for header cache compression
mail-client/neomutt:notmuch - Enable support for net-mail/notmuch
mail-client/neomutt:pgp-classic - Build classic-pgp backend to support PGP/MIME and traditional/inline PGP
mail-client/neomutt:qdbm - Enable QDBM (Quicker Database Manager) database backend for header caching
mail-client/neomutt:smime-classic - Build classic-smime backend to support S/MIME
mail-client/neomutt:tokyocabinet - Enable Tokyo Cabinet database backend for header caching
mail-client/neomutt:ubsan - Enable undefined behavior sanitizer for debugging
mail-client/neomutt:zlib - Add zlib support for header cache compression
mail-client/neomutt:zstd - Add zstd support for header cache compression
mail-client/roundcube:change-password - Allow users to change passwords through Roundcube
mail-client/roundcube:enigma - Add dependencies to support server-side GnuPG signing and/or encryption through the enigma plugin
mail-client/roundcube:fileinfo - Use the dev-lang/php fileinfo extension to guess the mime_type of attachments
mail-client/roundcube:ldap - Add dependencies to support connecting to an LDAP address book server
mail-client/s-nail:kerberos - If network is enabled, this adds support for GSSAPI login on IMAP through virtual/krb5.
mail-client/s-nail:net - Enable support for network protocols (POP, IMAP and SMTP). If you only need to send mail with the local Transport Agent, disabling this will get you support for only /usr/sbin/sendmail call.
mail-client/s-nail:ssl - If network is enabled, this adds support for S/MIME and SSL/TLS-powered protocols through dev-libs/openssl.
mail-client/thunderbird:clang - Use Clang compiler instead of GCC
mail-client/thunderbird:eme-free - Disable EME (DRM plugin) capability at build time
mail-client/thunderbird:hwaccel - Force-enable hardware-accelerated rendering (Mozilla bug 594876)
mail-client/thunderbird:libproxy - Enable libproxy support
mail-client/thunderbird:pgo - Add support for profile-guided optimization using gcc-4.5, for faster binaries. This option will double the compile time.
mail-client/thunderbird:pulseaudio - Add sound server support via media-libs/libpulse (may be PulseAudio or Pipewire, or apulse if installed)
mail-client/thunderbird:rust-extensions - Compile and install experimental rust extensions, that may become part of Thunderbird some day.
mail-client/thunderbird:sndio - Enable support for the media-sound/sndio backend
mail-client/thunderbird:system-av1 - Use the system-wide media-libs/dav1d and media-libs/libaom library instead of bundled.
mail-client/thunderbird:system-harfbuzz - Use the system-wide media-libs/harfbuzz and media-gfx/graphite2 instead of bundled.
mail-client/thunderbird:system-icu - Use the system-wide dev-libs/icu instead of bundled.
mail-client/thunderbird:system-jpeg - Use the system-wide media-libs/libjpeg-turbo instead of bundled.
mail-client/thunderbird:system-libevent - Use the system-wide dev-libs/libevent instead of bundled.
mail-client/thunderbird:system-librnp - Use system-wide dev-util/librnp instead of bundled one.
mail-client/thunderbird:system-libvpx - Use the system-wide media-libs/libvpx instead of bundled.
mail-client/thunderbird:system-png - Use the system-wide media-libs/libpng instead of bundled (requires APNG patches)
mail-client/thunderbird:system-webp - Use the system-wide media-libs/libwebp instead of bundled.
mail-client/thunderbird:wifi - Enable necko-wifi for NetworkManager integration, and access point MAC address scanning for better precision with opt-in geolocation services
mail-filter/MailScanner:exim - Set mail-mta/exim to used MTA
mail-filter/MailScanner:postfix - Set mail-mta/postfix to used MTA
mail-filter/MailScanner:spamassassin - Enable usage of mail-filter/spamassassin for spam protection
mail-filter/amavisd-new:courier - Add courier support
mail-filter/amavisd-new:dkim - Add DomainKeys Identified Mail support
mail-filter/amavisd-new:qmail - Add qmail support
mail-filter/amavisd-new:razor - Add support for mail-filter/razor
mail-filter/amavisd-new:rspamd - Add support for mail-filter/rspamd extension (HTTP only)
mail-filter/amavisd-new:rspamd-https - Add support for mail-filter/rspamd extension (both HTTP and HTTPS)
mail-filter/amavisd-new:spamassassin - Add support for mail-filter/spamassassin
mail-filter/bogofilter:tokyocabinet - Enable Tokyo Cabinet database support
mail-filter/dcc:rrdtool - Enable net-analyzer/rrdtool interface scripts
mail-filter/libmilter:poll - Use poll instead of select
mail-filter/maildrop:authlib - Add courier-authlib support
mail-filter/maildrop:dovecot - Add dovecot authentication support
mail-filter/maildrop:tools - Install maildirmake and deliverquota tools
mail-filter/maildrop:trashquota - Count deleted messages as part of the maildir quota
mail-filter/mimedefang:poll - Use poll instead of select
mail-filter/opendkim:ldap - Enable openldap as a dataset facilitator or keys, determining domains to sign for, and any other dataset that opendkim supports.
mail-filter/opendkim:lmdb - Add support for using dev-db/lmdb
mail-filter/opendkim:lua - Enables control over signature verification, filtering and policy to be controlled by user defined lua scripts.
mail-filter/opendkim:memcached - Add support for using dev-libs/libmemcached
mail-filter/opendkim:opendbx - Use opendbx backend to facilitate dataset driven OpenDKIM configuration options like stats, bodylengthdb, etc. against a wide variety of database types
mail-filter/opendkim:poll - Use poll() instead of select() for the provided asynchronous resolver library.
mail-filter/opendkim:querycache - Add support for query caching (requires 'berkdb' flag)
mail-filter/opendkim:sasl - Used to authenticate to a LDAP server in various ways if required.
mail-filter/opendkim:stats - Add support for statistics (requires 'opendbx' flag)
mail-filter/opendkim:unbound - Use the unbound dnssec library to perform DKIM DNS queries.
mail-filter/opendmarc:reports - Install the reports binaries: expire, import, reports, params
mail-filter/opendmarc:spf - Use the mail-filter/libspf2 for Sender Policy Framework checking
mail-filter/pyzor:gdbm - Enables the Gdbm back-end database engine for pyzord
mail-filter/pyzor:mysql - Enables the MySQL back-end database engine for pyzord through dev-python/mysqlclient.
mail-filter/pyzor:pyzord - Enable the pyzord server daemon
mail-filter/pyzor:redis - Enables the redis back-end database engine for pyzord through dev-python/redis
mail-filter/rspamd:hyperscan - Enable hyperscan for fast regexp processing
mail-filter/rspamd:jit - Enable PCRE JIT support
mail-filter/spamassassin:cron - Install a cron job to update SpamAssassin's rules daily.
mail-filter/spamassassin:qmail - Build qmail functionality and docs
mail-mta/courier:fax - Enables fax support in the courier mail server
mail-mta/courier:norewrite - Prevents courier mail server from mangling virtual user addresses when sending
mail-mta/courier:web - Enable the web interface
mail-mta/courier:webmail - Enable the webmail interface
mail-mta/exim:arc - Adds support for Authenticated Receive Chain (ARC)
mail-mta/exim:dane - Adds support for DNS-based Authentication of Named Entities
mail-mta/exim:dcc - Adds support for Distributed Checksum Clearinghouse (DCC)
mail-mta/exim:dkim - Adds support for DomainKeys Identified Mail (DKIM)
mail-mta/exim:dlfunc - Install local_scan.h header to compile separate dlfunc libraries
mail-mta/exim:dmarc - Adds support for DMARC
mail-mta/exim:dnsdb - Adds support for a DNS search for a record whose domain name is the supplied query
mail-mta/exim:dovecot-sasl - Adds support for Dovecot's authentication
mail-mta/exim:dsn - Adds support for Delivery Status Notifications (DSN)
mail-mta/exim:lmtp - Adds support for lmtp
mail-mta/exim:mbx - Adds support for UW's mbx format
mail-mta/exim:pkcs11 - Require pkcs11 support in net-libs/gnutls with USE=gnutls
mail-mta/exim:prdr - Adds support for Per-Recipient Data Response
mail-mta/exim:proxy - Add support for being behind a proxy, such as HAProxy
mail-mta/exim:redis - Adds support for querying dev-db/redis
mail-mta/exim:spf - Adds support for Sender Policy Framework
mail-mta/exim:srs - Adds support for Sender Rewriting Scheme
mail-mta/exim:tdb - Use sys-libs/tdb for internal database storage (such as hints database)
mail-mta/exim:tpda - Adds support for Transport Post-Delivery Actions
mail-mta/msmtp:daemon - Build/install msmtpd MTA daemon
mail-mta/msmtp:mta - Enable this to install as system-wide MTA
mail-mta/netqmail:gencertdaily - Generate SSL certificates daily instead of hourly
mail-mta/netqmail:highvolume - Prepare netqmail for high volume servers
mail-mta/netqmail:pop3 - Include POP3 server
mail-mta/notqmail:gencertdaily - Generate SSL certificates daily instead of hourly
mail-mta/notqmail:highvolume - Prepare notqmail for high volume servers
mail-mta/notqmail:pop3 - Include POP3 server
mail-mta/opensmtpd:mta - Enable this to install as system-wide MTA
mail-mta/postfix:dovecot-sasl - Enable net-mail/dovecot protocol version 1 (server only) SASL implementation
mail-mta/postfix:eai - Add support for SMTPUTF8
mail-mta/postfix:ldap-bind - Add support for binding to LDAP backend using dev-libs/cyrus-sasl
mail-mta/postfix:lmdb - Add support for using dev-db/lmdb for lookup tables
mail-mta/postfix:memcached - Add support for using net-misc/memcached for lookup tables
mail-mta/postfix:mongodb - Add support for using dev-db/mongodb for lookup tables
mail-mta/qpsmtpd:postfix - create user with permissions for proper postfix interaction
mail-mta/ssmtp:mta - Install symlinks for sendmail-compatible MTA.
mate-base/caja:mate - Install x11-themes/mate-icon-theme which is needed when this package is used in the MATE desktop environment.
mate-base/mate:base - Install base MATE Desktop applications that are recommended for the most common usage; for example, this installs the file manager. Disable this and other USE flags if you want a more minimal MATE Desktop.
mate-base/mate:extras - Install additional MATE Desktop applications that are recommended for extended usage of the MATE Desktop as upstream sees it; for example, this installs MATE Desktop's office related applications. Disable this if you plan to use your own non-MATE Desktop alternatives or a custom mixture of MATE and non-MATE packages.
mate-base/mate:help - Install gnome-extra/yelp to handle in application help menus and documentation browsing
mate-base/mate:notification - Force notification daemon to default to MATE's notification daemon. Enabled by default. Disable if it causes conflicts with other installed desktop environments.
mate-base/mate:themes - Install MATE Desktop's themes; if you use other themes, you can disable this to spare some space and time.
mate-base/mate-applets:cpupower - Enable support for cpu frequency manipulation using sys-power/cpupower
mate-base/mate-applets:netlink - Use dev-libs/libnl
mate-base/mate-applets-meta:appindicator - Pull in mate-extra/mate-indicator-applet for AppIndicator applet
mate-base/mate-applets-meta:sensors - Pull in mate-extra/mate-sensors-applet for hw sensors applet
mate-base/mate-control-center:accountsservice - Add support for AccountsService
mate-base/mate-session-manager:gles2 - Build with support for GLESv2 acceleration sessions
mate-base/mate-settings-daemon:rfkill - build support for rfkill
mate-extra/caja-extensions:cdr - Add an extension to burn files to cds using app-cdr/brasero.
mate-extra/caja-extensions:gajim - Add an extension to support net-im/gajim.
mate-extra/caja-extensions:image-converter - Add image conversion support.
mate-extra/caja-extensions:mail - Add an extension to support e-mail functionality.
mate-extra/caja-extensions:media - Add video audio extension with totem.
mate-extra/caja-extensions:open-terminal - Add an extension to support an open terminal.
mate-extra/caja-extensions:pidgin - Add an extension to support net-im/pidgin
mate-extra/caja-extensions:share - Add an extension to support sharing files.
mate-extra/caja-extensions:wallpaper - Add an extension to support setting an image as the current wallpaper
mate-extra/mate-polkit:accountsservice - Support extraction of data from AccountsService
mate-extra/mate-power-manager:applet - Enable building of the MATE applet.
mate-extra/mate-system-monitor:wnck - Enable experimental support using x11-libs/libwnck.
mate-extra/mate-tweak:dropdown - Support the x11-terms/tilda dropdown terminal emulator
mate-extra/mate-utils:applet - Enable the mate dictionary applet
media-fonts/corefonts:tahoma - Also install the Tahoma font. Due to the lack of a free bold variant, this may render badly. See bug 184790.
media-fonts/culmus:ancient - Install ancient semitic scripts
media-fonts/culmus:fancy - Install fancy fonts
media-fonts/culmus:fontforge - Use media-gfx/fontforge to build fonts from source
media-fonts/culmus:taamey - Install taamey fonts
media-fonts/dejavu:fontforge - Use media-gfx/fontforge to build fonts from source
media-fonts/fonts-meta:emoji - Install a font supporting emojis
media-fonts/fonts-meta:latin - Install additional latin fonts
media-fonts/fonts-meta:ms - Install (free) fonts for the "ms" preset
media-fonts/intlfonts:bdf - Install BDF fonts in addition to PCF
media-fonts/iosevka:iosevka - Install the classic Iosevka font.
media-fonts/iosevka:iosevka-aile - Install Iosevka Aile, a quasi-proportional sans-serif font.
media-fonts/iosevka:iosevka-curly - Install Iosevka Curly, a curlier variant of Iosevka.
media-fonts/iosevka:iosevka-curly-slab - Install Iosevka Curly Slab, the curly font, with slab-serifs.
media-fonts/iosevka:iosevka-etoile - Install Iosevka Etoile, a quasi-proportional slab-serif font.
media-fonts/iosevka:iosevka-slab - Install Iosevka Slab, a monospace slab-serif font.
media-fonts/iosevka:iosevka-ss01 - Install Iosevka SS01, an Iosevka variant made in the style of Andale Mono.
media-fonts/iosevka:iosevka-ss02 - Install Iosevka SS02, an Iosevka variant made in the style of Anonymous Pro Style.
media-fonts/iosevka:iosevka-ss03 - Install Iosevka SS03, an Iosevka variant made in the style of Consolas.
media-fonts/iosevka:iosevka-ss04 - Install Iosevka SS04, an Iosevka variant made in the style of Menlo.
media-fonts/iosevka:iosevka-ss05 - Install Iosevka SS05, an Iosevka variant made in the style of Fira Mono.
media-fonts/iosevka:iosevka-ss06 - Install Iosevka SS06, an Iosevka variant made in the style of Liberation Mono.
media-fonts/iosevka:iosevka-ss07 - Install Iosevka SS07, an Iosevka variant made in the style of Monaco.
media-fonts/iosevka:iosevka-ss08 - Install Iosevka SS08, an Iosevka variant made in the style of Pragmata Pro.
media-fonts/iosevka:iosevka-ss09 - Install Iosevka SS09, an Iosevka variant made in the style of Source Code Pro.
media-fonts/iosevka:iosevka-ss10 - Install Iosevka SS10, an Iosevka variant made in the style of Envy Code R.
media-fonts/iosevka:iosevka-ss11 - Install Iosevka SS11, an Iosevka variant made in the style of X Windows Fixed.
media-fonts/iosevka:iosevka-ss12 - Install Iosevka SS12, an Iosevka variant made in the style of Ubuntu Mono.
media-fonts/iosevka:iosevka-ss13 - Install Iosevka SS13, an Iosevka variant made in the style of Lucida.
media-fonts/iosevka:iosevka-ss14 - Install Iosevka SS14, an Iosevka variant made in the style of JetBrains Mono.
media-fonts/iosevka:iosevka-ss15 - Install Iosevka SS15, an Iosevka variant made in the style of IBM Plex Mono.
media-fonts/iosevka:iosevka-ss16 - Install Iosevka SS16, an Iosevka variant made in the style of PT Mono.
media-fonts/iosevka:iosevka-ss17 - Install Iosevka SS17, an Iosevka variant made in the style of Recursive Mono.
media-fonts/iosevka:iosevka-ss18 - Install Iosevka SS18, an Iosevka variant made in the style of Input Mono.
media-fonts/liberation-fonts:fontforge - Use media-gfx/fontforge to build fonts from source
media-fonts/montecarlo:bdf - Install BDF fonts in addition to PCF
media-fonts/mplus-outline-fonts:ipafont - Generates new fonts merged with media-fonts/ja-ipafonts
media-fonts/noto:extra - Install full upstream font set including condensed, semi-bold, extra-light variants
media-fonts/noto-emoji:icons - Install Noto Emoji icon theme
media-fonts/terminus-font:a-like-o - Changes view of letter 'a' - a looks like o (see homepage)
media-fonts/terminus-font:center-tilde - Place the '~' character vertically centered on the line instead of to the top.
media-fonts/terminus-font:distinct-l - ll2 variant with more distinctive l (lowercase L)
media-fonts/terminus-font:otf - Install Open Type Font (OTF) (required for HarfBuzz backend)
media-fonts/terminus-font:pcf-8bit - Install Portable Compiled Font (PCF) (X11 bitmap fonts), 8-bit encodings
media-fonts/terminus-font:pcf-unicode - Install Portable Compiled Font (PCF) (X11 bitmap fonts), Unicode encodings
media-fonts/terminus-font:psf - Install PC Screen Font (PSF) with unicode data (for linux console)
media-fonts/terminus-font:quote - Changes view of quotes: symmetric ` and ' instead of asymmetric one (see homepage)
media-fonts/terminus-font:ru-dv - Changes view of Russian letters 'de' and 've' (see homepage)
media-fonts/terminus-font:ru-g - Changes view of Russian letter 'ge' (see homepage)
media-fonts/terminus-font:ru-i - Changes view of Russian letter 'i' - not like Latin u, but like "mirrored" N (see homepage)
media-fonts/terminus-font:ru-k - Changes view of Russian letter 'k' (see homepage)
media-fonts/unifont:fontforge - Use media-gfx/fontforge to build fonts from source
media-fonts/unifont:utils - Install unifont utilities
media-gfx/ahoviewer:plugins - Build plugin support for now, in future pull additional plugins
media-gfx/ahoviewer:rar - Rar archive support
media-gfx/ahoviewer:zip - Zip archive support
media-gfx/album:plugins - Install optional plugins
media-gfx/album:themes - Install optional themes
media-gfx/alembic:hdf5 - Add support sci-libs/hdf5
media-gfx/alembic:test - Build and run the test-suite
media-gfx/asymptote:boehm-gc - Enables using the Boehm-Demers-Weiser conservative garbage collector
media-gfx/asymptote:context - Enables support for ConTeXt format (dev-texlive/texlive-context)
media-gfx/asymptote:curl - Enables running remote programs via net-misc/curl
media-gfx/asymptote:lsp - Enables Language Server Protocol
media-gfx/asymptote:offscreen - Enables off-screen rendering
media-gfx/asymptote:sigsegv - Enables using dev-libs/libsigsegv
media-gfx/blender:alembic - Add support for Alembic through media-gfx/alembic.
media-gfx/blender:bullet - Enable Bullet (Physics Engine).
media-gfx/blender:collada - Add support for Collada interchange format through media-libs/opencollada.
media-gfx/blender:color-management - Enable color management via media-libs/opencolorio.
media-gfx/blender:cuda - Build cycles renderer with nVidia CUDA support.
media-gfx/blender:cycles - Build cycles renderer (requires media-libs/openimageio and dev-libs/boost).
media-gfx/blender:cycles-bin-kernels - Precompile the cycles render kernels for the CUDA/HIP/OneAPI backends, if they are enabled, at compile time. This makes it so that the user doesn't have to wait for the kernels to compile when they are used for the first time in Blender. If this option is not on, they will be built as needed at runtime.
media-gfx/blender:dds - Adds DDS textures support to Blender.
media-gfx/blender:embree - Use embree to accelerate certain areas of the Cycles render engine.
media-gfx/blender:experimental - Build Experimental Blender Modules
media-gfx/blender:fluid - Adds fluid simulation support via the built-in Mantaflow library.
media-gfx/blender:headless - Build without graphical support (renderfarm, server mode only).
media-gfx/blender:hip - Build cycles renderer with AMD HIP support.
media-gfx/blender:nanovdb - Enable nanoVDB support in Cycles. Uses less memory than regular openVDB when rendering.
media-gfx/blender:ndof - Enable NDOF input devices (SpaceNavigator and friends).
media-gfx/blender:oidn - Enable OpenImageDenoiser Support
media-gfx/blender:oneapi - Build OIDN with Intel oneAPI SyCL support
media-gfx/blender:openimageio - Enable OpenImageIO Support
media-gfx/blender:openpgl - Enable path guiding support in Cycles
media-gfx/blender:opensubdiv - Add rendering support form OpenSubdiv from Dreamworks Animation through media-libs/opensubdiv.
media-gfx/blender:openvdb - Enable openvdb for volumetric processing, like the voxel remesher. Also enables volumetric GPU preview rendering for Nvidia cards.
media-gfx/blender:optix - Add support for NVIDIA's OptiX Raytracing Engine.
media-gfx/blender:osl - Add support for OpenShadingLanguage scripting.
media-gfx/blender:potrace - Add support for converting bitmaps into Grease pencil line using the potrace library.
media-gfx/blender:pugixml - Enable PugiXML support (Used for OpenImageIO, Grease Pencil SVG export)
media-gfx/blender:renderdoc - Build Blender with renderdoc support
media-gfx/blender:tbb - Use threading building blocks library from dev-cpp/tbb.
media-gfx/blender:vulkan - Add support for the experimental Vulkan viewport backend
media-gfx/chafa:tools - Build command-line tools
media-gfx/darktable:gamepad - Support using game controllers as input devices
media-gfx/darktable:geolocation - Enable geotagging support
media-gfx/darktable:kwallet - Enable encrypted storage of passwords with kde-frameworks/kwallet
media-gfx/darktable:lto - Enable link-time optimisations in the RawSpeed library
media-gfx/darktable:midi - Support using MIDI input devices such as Behringer X-Touch Mini, Arturia Beatstep or Korg nanoKONTROL2, as input devices
media-gfx/darktable:tools - Install tools for generating base curves and noise profiles
media-gfx/digikam:addressbook - Enable akonadi contact integration
media-gfx/digikam:imagemagick - Enable support for additional image formats such as XCF, FITS, HEIC etc.
media-gfx/digikam:lensfun - Enable support for media-libs/lensfun
media-gfx/digikam:panorama - Build the panorama plugin which requires media-gfx/hugin
media-gfx/digikam:semantic-desktop - Enable kde-frameworks/kfilemetadata support
media-gfx/digikam:video - Enable integrated video player
media-gfx/eog-plugins:map - Enable world map display using media-libs/libchamplain
media-gfx/eom:imagemagick - Use media-gfx/imagemagick as an external backend for the thumbnailer
media-gfx/exact-image:swig - Adds Swig support dev-lang/swig
media-gfx/exiv2:bmff - Add support for the ISOBMFF format
media-gfx/exiv2:webready - Support reading metadata over the internet
media-gfx/fbida:X - Install the Motif based image viewer "ida"
media-gfx/fbida:fbcon - Install the framebuffer image viewer "fbi"
media-gfx/fbida:ghostscript - Install the framebuffer ghostscript viewer "fbgs"
media-gfx/fig2dev:ghostscript - Require app-text/ghostscript-gpl to export PDF an bitmap formats
media-gfx/fontforge:truetype-debugger - Enable truetype debugger in fontforge
media-gfx/fontforge:woff2 - Enable support for WOFF2 format
media-gfx/fotowall:webcam - Enable webcam support
media-gfx/freecad:addonmgr - Build the addon manager module for automatic handling of 3rd party addons
media-gfx/freecad:cloud - Build the Cloud workbench, to access cloud providers (mostly Amazon S3).
media-gfx/freecad:designer - Build and install the Qt designer plugin, so the FreeCAD widgets can be used from within designer.
media-gfx/freecad:fem - Build the FEM module and workbench which provides Finite Element Analysis (FEA) workflows
media-gfx/freecad:gui - Build FreeCAD with a Qt based GUI. If built without setting this USE flag, FreeCAD can be used in a headless mode, for server-side instances. The Python modules are available, without their GUI parts though, if this is unset.
media-gfx/freecad:idf - Build the IDF module to provide file exchange capabilities with IDF files
media-gfx/freecad:image - Build the image module and workbench for working with bitmap images
media-gfx/freecad:inspection - Build the inspection workbench which gives you specific tools for examination of shapes (experimental)
media-gfx/freecad:material - Build the material module and workbench to work with materials
media-gfx/freecad:netgen - Build support for the netgen mesher through media-gfx/netgen.
media-gfx/freecad:openscad - Build the OpenSCAD module for interoperability with OpenSCAD and repairing Constructive Solid Geometry (CSG) history
media-gfx/freecad:part-design - Build the part design module and workbench for build part shapes from sketches
media-gfx/freecad:path - Build the path module and workbench to procude G-Code instructions for CNC
media-gfx/freecad:pcl - Use external sci-libs/pcl for point clouds support.
media-gfx/freecad:points - Build the points module and workbench for working with point clouds
media-gfx/freecad:raytracing - Build the raytracing module and workbench for raytracing and rendering
media-gfx/freecad:robot - Build the robot module and workbench for studying robot movements
media-gfx/freecad:show - Build the show module, a helper module for visibility automation
media-gfx/freecad:smesh - Build the Salome SMESH module
media-gfx/freecad:surface - Build the surface module and workbench
media-gfx/freecad:techdraw - Build the techdraw module and workbench, a more advanced and feature-rich successor of the drawing workbench
media-gfx/freecad:tux - Build the Tux module
media-gfx/geeqie:ffmpegthumbnailer - Enable video thumbnail support with media-video/ffmpegthumbnailer
media-gfx/geeqie:map - Enable items GPS map display
media-gfx/gimp:fits - Enable support for loading/exporting FITS images
media-gfx/gimp:vector-icons - Enable support for vector icons (experimental)
media-gfx/graphicsmagick:dynamic-loading - Compile graphicsmagick with dynamically loadable modules
media-gfx/graphicsmagick:fpx - Enable FlashPix support with media-libs/libfpx
media-gfx/graphicsmagick:q16 - Set storage quantum size to 16 (~2*memory)
media-gfx/graphicsmagick:q32 - Set storage quantum size to 32 (~5*memory)
media-gfx/graphicsmagick:zip - Build with dev-libs/libzip to support the OpenRaster (ORA) format.
media-gfx/graphviz:X - Builds unflatten, vimdot, builds plugin -Txlib, and enables support for x11 in various other modules (needs cairo)
media-gfx/graphviz:devil - Enables DevIL output plugin -Tdevil
media-gfx/graphviz:gtk2 - Enables gtk+ output plugin -Tgtk (needs cairo)
media-gfx/graphviz:gts - Enables support for GNU Triangulated Surface Library (required for sfdp to work)
media-gfx/graphviz:lasi - Enables PostScript output via media-libs/lasi, for plugin -Tlasi (needs cairo)
media-gfx/gthumb:slideshow - Enable slideshow plugin
media-gfx/hugin:sift - automatically align images with media-gfx/autopano-sift-C
media-gfx/imagemagick:corefonts - Use media-fonts/corefonts which is required by some commands
media-gfx/imagemagick:fpx - Enable media-libs/libfpx support
media-gfx/imagemagick:hdri - Enable High Dynamic Range Images formats
media-gfx/imagemagick:lqr - Enable experimental liquid rescale support using media-libs/liblqr
media-gfx/imagemagick:pango - Enable Pango support using x11-libs/pango
media-gfx/imagemagick:q32 - Set quantum depth value to 32
media-gfx/imagemagick:q8 - Set quantum depth value to 8
media-gfx/imv:freeimage - Use media-libs/freeimage for additional image support
media-gfx/inkscape:cdr - Enable support for CorelDRAW files via media-libs/libcdr
media-gfx/inkscape:dia - Enable DIA flow chart import via app-office/dia
media-gfx/inkscape:inkjar - Enable support for OpenOffice.org SVG jar files
media-gfx/inkscape:sourceview - Enable syntax highlighting support via x11-libs/gtksourceview
media-gfx/inkscape:svg2 - Enable support for new SVG2 features
media-gfx/inkscape:visio - Enable support for Microsoft Visio diagrams via media-libs/libvisio
media-gfx/inkscape:wpg - Enable support for WordPerfect graphics via app-text/libwpg
media-gfx/iscan-plugin-gt-f500:minimal - Install the firmware only, and not the plugin.
media-gfx/kphotoalbum:map - Enable map display support using kde-apps/marble
media-gfx/kphotoalbum:phonon - Enable media-libs/phonon video backend (known to crash on some video formats)
media-gfx/kphotoalbum:share - Enable support for a share menu using kde-frameworks/purpose
media-gfx/kphotoalbum:vlc - Enable media-video/vlc video backend (recommended for X11)
media-gfx/krita:color-management - Enable color management via media-libs/opencolorio
media-gfx/krita:media - Enable sound support for animations via media-libs/mlt
media-gfx/krita:mypaint-brush-engine - Enable MyPaint brush engine support media-libs/libmypaint
media-gfx/krita:qtmedia - Enable sound support for animations via dev-qt/qtmultimedia
media-gfx/krita:xsimd - Enable usage of SIMD instructions via dev-cpp/xsimd
media-gfx/librecad:tools - Build additional tool programs: tff2lff
media-gfx/luminance-hdr:fits - Enable support for the FITS format
media-gfx/mandelbulber:opencl - Enable GPU rendering support using OpenCL
media-gfx/meshlab:double-precision - Use double type instead of float type for scalars
media-gfx/netgen:logging - Enable logging through dev-libs/spdlog
media-gfx/netgen:opencascade - Enable OpenCASCADE support
media-gfx/nomacs:opencv - Build support for media-libs/opencv
media-gfx/nomacs:plugins - Build officially support plugins
media-gfx/okularpart:epub - Enable E-Book support via app-text/ebook-tools
media-gfx/okularpart:mobi - Enable mobipocket support via kde-apps/kdegraphics-mobipocket
media-gfx/openclipart:gzip - Compresses clip art using gzip
media-gfx/openscad:egl - Build using EGL instead of GLX
media-gfx/openscad:experimental - Enable experimental features
media-gfx/openscad:gamepad - Add support for gamepads through dev-qt/qtgamepad
media-gfx/openscad:gui - Enable or disable building of the GUI
media-gfx/openscad:hidapi - Build in support for HID-Class devices using dev-libs/hidapi
media-gfx/openscad:mimalloc - Build using dev-libs/mimalloc as memory allocator
media-gfx/openscad:spacenav - Add support for space navigator devices through dev-libs/libspnav
media-gfx/openvdb:abi10-compat - Disables newer features to maintain compatibility with ABI10
media-gfx/openvdb:abi11-compat - Disables newer features to maintain compatibility with ABI11
media-gfx/openvdb:abi12-compat - Disables newer features to maintain compatibility with ABI12
media-gfx/openvdb:abi8-compat - Disables newer features to maintain compatibility with ABI8
media-gfx/openvdb:abi9-compat - Disables newer features to maintain compatibility with ABI9
media-gfx/openvdb:alembic - Add support for Alembic through media-gfx/alembic.
media-gfx/openvdb:ax - Build the OpenVDB AX module to perform custom manipulation of OpenVDB data via an expression language: AX
media-gfx/openvdb:blosc - Allow using blosc compression via dev-libs/c-blosc
media-gfx/openvdb:cuda - Enable support for CUDA in NanoVDB
media-gfx/openvdb:nanovdb - A lightweight, header only, and GPU friendly version of VDB
media-gfx/openvdb:numpy - Build pyopenvdb with support for dev-python/numpy
media-gfx/openvdb:utils - Build utility binaries
media-gfx/photoqt:devil - Support additional image formats using media-libs/devil
media-gfx/photoqt:freeimage - Support additional image formats using media-libs/freeimage
media-gfx/photoqt:mpv - Support for video files using media-video/mpv
media-gfx/plantuml:ant-task - Provides classes used to manage PlantUML Ant task
media-gfx/potrace:metric - default to a4 paper size and metric measurement
media-gfx/povray:io-restrictions - POV-Ray's mechanism for control of I/O operations
media-gfx/pqiv:archive - Enable support for images in archives and cbX comic book files
media-gfx/pstoedit:emf - Enable media-libs/libemf support
media-gfx/pstoedit:pptx - Enable support for generating PowerPoint pptx files
media-gfx/qimgv:opencv - Enable HQ scaling via media-libs/opencv
media-gfx/qimgv:video - Add support for gif/webm playback via libmpv
media-gfx/qrencode:png - Enable PNG output support in qrencode tool
media-gfx/renderdoc:qt5 - Build and install the qrenderdoc GUI
media-gfx/shotwell:opencv - Enable face detection via media-libs/opencv
media-gfx/skanpage:ocr - Enable support for Optical Character Recognition via app-text/tesseract
media-gfx/solvespace:system-mimalloc - Use system dev-libs/mimalloc instead of vendored library
media-gfx/ueberzugpp:opencv - Use media-libs/opencv for additional image formats and OpenCL accelerated scaling
media-gfx/ueberzugpp:wayland - Enable wayland support (proper window positioning is only supported with some compositors)
media-gfx/ueberzugpp:xcb-errors - Use x11-libs/xcb-util-errors for better error reporting with X
media-gfx/xpaint:pgf - Support for loading PGF images
media-gfx/yafaray:fastmath - Enable mathematic approximations to make code faster
media-gfx/yafaray:fasttrig - Enable trigonometric approximations to make code faster
media-gfx/yafaray:opencv - Add support for media-libs/opencv image processing.
media-libs/a52dec:djbfft - Prefer D.J. Bernstein's library for fourier transforms
media-libs/allegro:dumb - Enable media-libs/dumb module library support
media-libs/allegro:physfs - Enable physfs support
media-libs/allegro:vga - Enables the VGA graphics driver
media-libs/alsa-lib:alisp - Enable support for ALISP (ALSA LISP) interpreter for advanced features.
media-libs/alure:dumb - Enable media-libs/dumb module library support
media-libs/alure:fluidsynth - Enables Fluidsynth MIDI software synthesis
media-libs/assimp:collada - Add support for Collada interchange format through media-libs/opencollada
media-libs/assimp:samples - Build viewer library
media-libs/aubio:double-precision - Compile in double precision mode.
media-libs/avidemux-core:system-ffmpeg - Use the ffmpeg provided by the system.
media-libs/avidemux-plugins:aften - Enable A/52 (AC-3) audio encoder support.
media-libs/avidemux-plugins:amr - Enable Adaptive Multi-Rate format support via media-libs/opencore-amr.
media-libs/avidemux-plugins:dcaenc - Enable DTS Coherent Acoustics audio encoder support via media-sound/dcaenc.
media-libs/avidemux-plugins:fdk - Adds support for encoding AAC using media-libs/fdk-aac.
media-libs/avidemux-plugins:fribidi - Enable unicode bidirectional algorithm support via dev-libs/fribidi.
media-libs/avidemux-plugins:twolame - Enable TwoLAME support via media-sound/twolame, an optimised MPEG Audio Layer 2 (MP2) encoder.
media-libs/avidemux-plugins:vpx - Enable WebM VP8 Codec SDK support via media-libs/libvpx.
media-libs/avidemux-plugins:x265 - Enables HEVC support with media-libs/x265.
media-libs/cal3d:16bit-indices - Enables use of 16bit indices
media-libs/chromaprint:tools - Build and install fpcalc and fpcollect tools
media-libs/clutter:gtk - Use gdk-pixbuf from x11-libs/gtk+ as image rendering backend
media-libs/cogl:kms - Enable KMS support.
media-libs/cogl:pango - Build cogl-pango library for x11-libs/pango integration
media-libs/coin:exceptions - Compile with C++ exceptions
media-libs/coin:qch - Install API documentation in QCH format
media-libs/coin:qthelp - Build API documentation in QtHelp format
media-libs/cubeb:sndio - Enable support for the media-sound/sndio backend
media-libs/dav1d:10bit - Add support for building 10-bit and 12-bit AV1.
media-libs/dav1d:8bit - Add support for decoding 8-bit AV1.
media-libs/dav1d:xxhash - Enable dev-libs/xxhash support for hashing muxer
media-libs/devil:allegro - Add support for Allegro
media-libs/dumb:allegro - Add support for Allegro 4
media-libs/embree:compact-polys - Enables double indexed poly layout.
media-libs/embree:ispc - Build Embree with support for ISPC applications.
media-libs/embree:raymask - Enables ray mask support.
media-libs/embree:ssp - When enabled, Embree compiles with stack protection against return address overrides. Stack protection will wield a minor performance decrease in return for higher security.
media-libs/embree:tbb - Use TBB instead of the built-in Embree tasking system.
media-libs/embree:tutorial - Enable to build Embree tutorials programs.
media-libs/esdl:image - Enable image support
media-libs/fcft:harfbuzz - Use media-libs/harfbuzz for grapheme and run shaping
media-libs/fcft:libutf8proc - Use media-libs/harfbuzz and dev-libs/libutf8proc for run shaping
media-libs/flickcurl:raptor - Use media-libs/raptor for proper RDF serializing
media-libs/freetype:adobe-cff - Use Adobe CFF as default font-renderer
media-libs/freetype:bzip2 - Support bzip2 compressed PCF fonts.
media-libs/freetype:cleartype-hinting - Bytecode hinting mode for TrueType fonts that activates subpixel hinting (a.k.a. ClearType hinting) by default
media-libs/freetype:fontforge - Install internal headers required for TrueType debugger in media-gfx/fontforge (built with USE=truetype-debugger)
media-libs/freetype:harfbuzz - Use media-libs/harfbuzz for auto-hinting OpenType fonts. WARNING: may trigger circular dependencies!
media-libs/freetype:infinality - Enable infinality options for improved LCD filtering
media-libs/freetype:utils - Install utilities and examples from ft2demos
media-libs/freeverb3:forcefpu - Disable assembly code
media-libs/freeverb3:plugdouble - Build plugins in double precision mode (default is float)
media-libs/ganv:fdgl - Use experimental force-directed graph layout
media-libs/gegl:lensfun - Enable support for media-libs/lensfun.
media-libs/gegl:sdl2 - Add support for Simple Direct Layer 2.0 (media-libs/libsdl2)
media-libs/gegl:umfpack - Enable sparse solving via sci-libs/umfpack.
media-libs/glew:egl-only - Enable EGL support and disable X11 support
media-libs/glfw:wayland-only - Enable wayland support and disable X11 support
media-libs/gmmlib:custom-cflags - Do not override user CFLAGS like -march, -msse and similar with lib defaults. Not tested by upstream.
media-libs/grilo:playlist - Enable support for playlists through dev-libs/totem-pl-parser
media-libs/gst-plugins-bad:bzip2 - Enable bzip2 encoder/decoder plugin
media-libs/gst-plugins-base:X - Enable ximagesink and xvimagesink plugins; build GLX platform support if USE=opengl is enabled; build x11 windowing system support if USE=egl is enabled
media-libs/gst-plugins-base:gbm - Enable Graphics Buffer Manager based EGL windowing system support (requires egl and at least one of gles or opengl)
media-libs/gst-plugins-base:gles2 - Enable OpenGL library and plugin via GLESv2 API (requires egl)
media-libs/gst-plugins-base:ivorbis - Enable integer based vorbis decoder
media-libs/gst-plugins-base:opengl - Enable OpenGL library and plugin via desktop OpenGL API
media-libs/gst-plugins-base:pango - Enable pango GStreamer plugin
media-libs/gst-plugins-base:wayland - Enable Wayland EGL windowing system support (requires egl and at least one of gles2 or opengl)
media-libs/gstreamer:unwind - Enable sys-libs/libunwind usage for better backtrace support in leaks tracer module
media-libs/harfbuzz:experimental - Enable experimental APIs
media-libs/harfbuzz:glib - Enable dev-libs/glib unicode functions
media-libs/harfbuzz:graphite - Enable media-gfx/graphite2 complementary shaper
media-libs/imlib2:X - Use the X window system
media-libs/imlib2:apidoc - Provide doxygen generated API docs
media-libs/imlib2:bzip2 - Bzip2 loader support
media-libs/imlib2:eps - Eps image loader support
media-libs/imlib2:filters - Build filter functions (blur, sharpen, etc)
media-libs/imlib2:heif - Heif and Avif image loader support
media-libs/imlib2:mp3 - ID3 loader support
media-libs/imlib2:packing - Enable structure packing. This will reduce memory footprint at the cost of unaligned memory access
media-libs/imlib2:shm - Use MIT shared memory support for X image transfer
media-libs/imlib2:text - Build text (TrueType font) functions
media-libs/imlib2:zlib - Zlib loader support
media-libs/intel-mediasdk:tools - Build analyse and inspect tools
media-libs/jasper:heif - Enable experimental support for HEIF/HEIC, unsupported by upstream
media-libs/leptonica:utils - Install command-line utilities
media-libs/lib3mf:system-act - Use system-provided dev-go/act as code generator instead of package provided binaries. This flag will be removed after some time used for testing!
media-libs/libafterimage:shaping - Use MIT shaped X windows extention.
media-libs/libafterimage:shm - Use MIT shared memory extention for X image transfer.
media-libs/libao:sndio - Add support for media-sound/sndio
media-libs/libass:libunibreak - Use dev-libs/libunibreak for Unicode line breaking algorithm
media-libs/libavif:aom - Enable support for the AOM codec encoding and decoding
media-libs/libavif:dav1d - Enable support for the dav1d codec decoding
media-libs/libavif:extras - Build extra apps (avifenc, avifdec) and test files
media-libs/libavif:gdk-pixbuf - Build a gdk-pixbuf loader
media-libs/libavif:rav1e - Enable support for the rav1e codec encoding
media-libs/libavif:svt-av1 - Enable support for the SVT-AV1 encoder
media-libs/libbdplus:aacs - Add support for decryption of AACS
media-libs/libbluray:aacs - Add support for decryption of AACS
media-libs/libbluray:bdplus - Use media-libs/libbdplus for BD+ decryption
media-libs/libbluray:java - Add support for BD-J
media-libs/libbluray:utils - Install command-line utilities and examples
media-libs/libcanberra:alsa - Enables ALSA sound driver.
media-libs/libcanberra:gstreamer - Enables gstreamer sound driver. Not useful when alsa or pulseaudio is available.
media-libs/libcanberra:gtk2 - Enables building of gtk+ helper library, gtk+ runtime sound effects and the canberra-gtk-play utility. To enable the gtk+ sound effects add canberra-gtk-module to the colon separated list of modules in the GTK_MODULES environment variable.
media-libs/libcanberra:gtk3 - Enables building of gtk+3 helper library, gtk+3 runtime sound effects and the canberra-gtk-play utility. To enable the gtk+3 sound effects add canberra-gtk-module to the colon separated list of modules in the GTK_MODULES environment variable.
media-libs/libcanberra:pulseaudio - Enables PulseAudio sound driver that should be able to support positional event sounds. This is the preferred choice for best sound events experience and picked by default if compiled in and possible to use at runtime.
media-libs/libcanberra:sound - Install x11-themes/sound-theme-freedesktop to get sounds on Gnome and Xfce.
media-libs/libcanberra:tdb - Enables Trivial Database support for caching purposes.
media-libs/libde265:dec265 - Enable build of dec265 example program
media-libs/libde265:enc265 - Enable build of enc265 tool
media-libs/libde265:sdl - Enable video output of dec265 example program with media-libs/libsdl
media-libs/libde265:tools - Enable installation of varous binary tools
media-libs/libffado:test-programs - Install standalone test programs
media-libs/libggi:3dfx - Enables support for Voodoo chipsets, also called 3DFX and TDFX
media-libs/libggi:vis - Enables sparc vis support for libggi
media-libs/libgphoto2:serial - Enable serial port support
media-libs/libgpod:gtk - Enable ArtworkDB support
media-libs/libheif:aom - Use media-libs/libaom for AVIF encoding/decoding
media-libs/libheif:gdk-pixbuf - Enable x11-libs/gdk-pixbuf plugin
media-libs/libheif:go - Enable building dev-lang/go code/examples
media-libs/libheif:rav1e - Use media-video/rav1e for AVIF encoding
media-libs/libheif:svt-av1 - Use media-libs/svt-av1 for SVT-AV1 encoding
media-libs/libheif:x265 - Use media-libs/x265 for HEIF encoding
media-libs/libjxl:gdk-pixbuf - Build a gdk-pixbuf loader.
media-libs/libjxl:jpeg - Enable full support for JPEG images. When disabled, only lossless conversion between JPEG and JPEG-XL is supported.
media-libs/liblastfm:fingerprint - Build the lastfm-fingerprint library
media-libs/libmp4v2:utils - Install command-line utilities
media-libs/libmypaint:gegl - Add support for media-libs/gegl
media-libs/libopenglrecorder:openh264 - Enable H.264 support using media-libs/openh264
media-libs/libopenglrecorder:vpx - Enable VP8/VP9 codec support via media-libs/libvpx
media-libs/libpagemaker:tools - Build command line file format conversion tools
media-libs/libpano13:suitesparse - Use Sparse Levenberg Marquardt algorithm instead of dense Levenberg Marquardt algorithm
media-libs/libplacebo:glslang - Use dev-util/glslang to compile GLSL
media-libs/libplacebo:lcms - Add support for color management via media-libs/lcms
media-libs/libplacebo:libdovi - Use media-libs/libdovi to read Dolby Vision metadata
media-libs/libplacebo:shaderc - Use media-libs/shaderc to compile GLSL
media-libs/libplacebo:xxhash - Use dev-libs/xxhash to speed up internal hashing
media-libs/libpng:apng - support unofficial APNG (Animated PNG) spec
media-libs/libprojectm:gles2 - Provide support for OpenGL ES 2 and 3
media-libs/libpulse:asyncns - Use libasyncns for asynchronous name resolution.
media-libs/libpulse:doc - Build the doxygen-described API documentation.
media-libs/libpulse:glib - Add support to dev-libs/glib-based mainloop for the libpulse client library, to allow using libpulse on glib-based programs.
media-libs/libsdl:joystick - Control joystick support (disable at your own risk)
media-libs/libsdl:sound - Control audio support (disable at your own risk)
media-libs/libsdl:tslib - Build with tslib support for touchscreen devices
media-libs/libsdl:video - Control video support (disable at your own risk)
media-libs/libsdl2:fcitx - Enable support for app-i18n/fcitx
media-libs/libsdl2:gles1 - include OpenGL ES 1.0 support
media-libs/libsdl2:haptic - Enable the haptic (force feedback) subsystem
media-libs/libsdl2:ibus - Enable support for app-i18n/ibus
media-libs/libsdl2:joystick - Control joystick support (disable at your own risk)
media-libs/libsdl2:kms - Build the KMSDRM video driver
media-libs/libsdl2:pipewire - Enable support for the media-video/pipewire audio backend
media-libs/libsdl2:sndio - Enable support for the media-sound/sndio backend
media-libs/libsdl2:sound - Control audio support (disable at your own risk)
media-libs/libsdl2:video - Control video support (disable at your own risk)
media-libs/libshumate:sysprof - Enable sysprof-capture support for profiling
media-libs/libtgvoip:dsp - Enable signal processing (echo cancellation, noise suppression, and automatic gain control)
media-libs/libv4l:bpf - Enable support for IR BPF decoders
media-libs/libv4l:tracer - Build the v4l2-tracer tool and library
media-libs/libv4l:utils - Build the v4l-utils collection of utilities
media-libs/libva-compat:drm - Enables VA/DRM API support.
media-libs/libva-intel-driver:hybrid - Enable support for hybrid vaapi hardware acceleration on Intel Haswell and newer architectures
media-libs/libva-intel-media-driver:redistributable - Install redistributable media kernel binaries (no source code) files (primarily needed for video encoding support)
media-libs/libvisio:tools - Build conversion tools
media-libs/libvmaf:embed-models - Compile default vmaf models into the library (needs app-editors/vim-core)
media-libs/libvpl-tools:drm - Build with DRM support
media-libs/libvpx:highbitdepth - Enable 10 and 12 bit support for VP9.
media-libs/libvpx:postproc - Enable additional post processing filters
media-libs/libwebp:swap-16bit-csp - Enable byte swapping for 16 bit colorspace
media-libs/libzmf:tools - Build conversion tools
media-libs/lilv:tools - Build command line utilities
media-libs/lsp-plugins:lv2 - Build lv2 plugins
media-libs/lsp-plugins:vst - Support LinuxVST plugins
media-libs/lv2:plugins - Enables examples plugins.
media-libs/lvtk:gtk2 - Enable x11-libs/gtk+:2 based GUI support
media-libs/lvtk:tools - Compile and install ttl2c tool
media-libs/mesa:d3d9 - Enable Direct 3D9 API through Nine state tracker. Can be used together with patched wine.
media-libs/mesa:llvm - Enable LLVM backend for Gallium3D.
media-libs/mesa:lm-sensors - Enable Gallium HUD lm-sensors support.
media-libs/mesa:opencl - Enable the Rusticl Gallium OpenCL state tracker.
media-libs/mesa:osmesa - Build the Mesa library for off-screen rendering.
media-libs/mesa:proprietary-codecs - Enable codecs for patent-encumbered audio and video formats.
media-libs/mesa:vdpau - Enable the VDPAU acceleration interface for the Gallium3D Video Layer.
media-libs/mesa:vulkan-overlay - Build vulkan-overlay-layer which displays Frames Per Second and other statistics
media-libs/mesa:wayland - Enable support for dev-libs/wayland
media-libs/mesa:xa - Enable the XA (X Acceleration) API for Gallium3D.
media-libs/mesa-amber:gles1 - Enable GLESv1 support.
media-libs/mesa-amber:wayland - Enable support for dev-libs/wayland
media-libs/mlt:frei0r - Build the module for media-plugins/frei0r-plugins
media-libs/mlt:opencv - Build motion tracking module using media-libs/opencv
media-libs/mlt:python - Build SWIG bindings for Python
media-libs/mlt:rtaudio - Builds rtaudio consumer for native audio support on multiple platforms
media-libs/mlt:rubberband - Enable audio pitch-shifting using media-libs/rubberband
media-libs/mlt:vidstab - Enabled video stabilization with media-libs/vidstab
media-libs/netpbm:rle - Build converters for the RLE format (utah raster toolkit)
media-libs/noise-suppression-for-voice:lv2 - Enable the LV2 plugin
media-libs/noise-suppression-for-voice:vst - Enable the VST plugin
media-libs/noise-suppression-for-voice:vst3 - Enable the VST3 plugin
media-libs/oidn:apps - Build the standalone denoise, self test, and benchmark binaries.
media-libs/oidn:hip - Build OIDN with AMD HIP support.
media-libs/oidn:openimageio - Enable OpenImageIO Support
media-libs/oneVPL-cpu:openh264 - Use media-libs/openh264 instead of media-libs/x264
media-libs/openal:pipewire - Enable support for the media-video/pipewire audio backend
media-libs/openal:sndio - Enable support for the media-sound/sndio backend
media-libs/opencolorio:apps - Build the OCIO command line apps
media-libs/opencv:atlas - Use sci-libs/atlas for blas, lapack and sparse blas routines
media-libs/opencv:contrib - Install user contributed scripts from opencv_contrib (Experimental!)
media-libs/opencv:contribcvv - Enable CVV in contrib (requires Qt5)
media-libs/opencv:contribdnn - Enable DNN module contrib (requires tinydnn)
media-libs/opencv:contribfreetype - Enable Drawing UTF-8 strings with media-libs/freetype&media-libs/harfbuzz
media-libs/opencv:contribhdf - Enable HDF module (requires sci-libs/hdf5)
media-libs/opencv:contribovis - Enable OGRE vision module support (dev-games/ogre)
media-libs/opencv:contribsfm - Enable SFM module (requires USE="eigen gflags glog")
media-libs/opencv:contribxfeatures2d - Enable xfeatures2d in contrib
media-libs/opencv:cuda - Enable NVIDIA Cuda computations support (Experimental!)
media-libs/opencv:cudnn - Enable support for nVidia cuDNN library
media-libs/opencv:dnnsamples - Enable dnn caffeemodel samples
media-libs/opencv:eigen - Enable usage of dev-cpp/eigen for computations
media-libs/opencv:features2d - Enable features2d module
media-libs/opencv:gdal - Enable support for sci-libs/gdal library
media-libs/opencv:gflags - Use Google's C++ argument parsing library (dev-cpp/gflags)
media-libs/opencv:glog - Use Google's C++ logging library (dev-cpp/glog)
media-libs/opencv:gtk3 - Enable x11-libs/gtk+:3 support
media-libs/opencv:jasper - Use media-libs/jasper for jpeg2k support
media-libs/opencv:mkl - Use sci-libs/mkl for blas, lapack and sparse blas routines
media-libs/opencv:non-free - Enable non-free components
media-libs/opencv:opencvapps - Enable compilation with opencvapps
media-libs/opencv:quirc - Enable qrcode decoding via media-libs/quirc
media-libs/opencv:tbb - Enable multithreading with the Intel Threads Building Block (dev-cpp/tbb)
media-libs/opencv:tesseract - Use Google's OCR Engine
media-libs/opencv:testprograms - Build and install programs for testing OpenCV (performance)
media-libs/opencv:truetype - Enable media-libs/freetype support for gapi module
media-libs/opencv:video_cards_intel - Enable Video Acceleration API for hardware decoding for Intel cards
media-libs/opencv:vtk - Build new 3D visualization module viz based on sci-libs/vtk
media-libs/openexr:large-stack - Enables code to take advantage of large stack support.
media-libs/openexr:utils - Build several binary tools for verifying and manipulating EXR files.
media-libs/openh264:plugin - Install the Gecko Media Plugin (GMP) for use with Mozilla packages
media-libs/openh264:utils - Install the CLI encoder and decoder utilities
media-libs/openimageio:dicom - Enable DICOM medical image file support via sci-libs/dcmtk
media-libs/openimageio:fits - Enable support for NASA's sci-libs/cfitsio library
media-libs/openimageio:gui - Build iv (with Qt5)
media-libs/openimageio:opencv - Enable OpenCV support via media-libs/opencv
media-libs/openimageio:openvdb - Enable OpenVDB support via media-gfx/openvdb
media-libs/openimageio:ptex - Enable Ptex texture mapping system file support via media-libs/ptex
media-libs/openimageio:qt6 - Build iv with Qt6
media-libs/openimageio:tools - Build the command-line tools
media-libs/opensubdiv:glew - Enable support for OpenGL Extension Wrangler Library (media-libs/glew)
media-libs/opensubdiv:glfw - Build all example files that uses (media-libs/glfw)
media-libs/opensubdiv:ptex - Adds support for faster per-face texture mapping through media-libs/ptex
media-libs/opensubdiv:python - Use dev-lang/python to process source and documentation source files
media-libs/opensubdiv:tbb - Enable multithreading with the Intel Threads Building Blocks through dev-cpp/tbb
media-libs/opensubdiv:tutorials - Install the tutorials
media-libs/opus:custom-modes - Enable non-Opus modes, e.g. 44.1 kHz and 2^n frames
media-libs/opus:deep-plc - Enable Deep Packet Loss Concealment (PLC)
media-libs/opus:dred - Enable Deep REDundancy (DRED)
media-libs/opus:osce - Enable Opus Speech Coding Enhancement (OSCE)
media-libs/opusfile:fixed-point - Enable fixed-point arithmetic operations
media-libs/opusfile:float - Enable floating point arithmetic operations
media-libs/opusfile:http - Enable http connections
media-libs/osl:gui - Build the osltoy binary (with Qt5)
media-libs/osl:libcxx - Build against sys-libs/libcxx when using clang
media-libs/osl:nofma - Do not use Fuse-Multiply-Add operations
media-libs/osl:optix - Add support for NVIDIA's OptiX Raytracing Engine
media-libs/osl:partio - Use media-libs/partio
media-libs/osl:qt6 - Build the osltoy binary (with Qt6)
media-libs/phonon:designer - Install plugin for dev-qt/designer
media-libs/portmidi:test-programs - Install various example programs
media-libs/quarter:designer - Install plugin for dev-qt/designer
media-libs/quarter:qch - Install API documentation in QCH format
media-libs/quarter:qthelp - Build API documentation in QtHelp format
media-libs/quirc:opencv - Build tools requiring media-libs/opencv (inspect-opencv,quirc-demo-opencv)
media-libs/quirc:sdl - Build tools requiring media-libs/sdl-gfx (inspect, quirc-demo)
media-libs/quirc:tools - Build tools (qrtest)
media-libs/quirc:v4l - Build tools for webcams (quirc-scanner)
media-libs/raptor:json - Enable support for JSON parsing
media-libs/raspberrypi-userland-bin:hardfp - Use armv6 hardfp ABI
media-libs/roc-toolkit:tools - Install helper tools like roc-conv, roc-recv, roc-send
media-libs/rubberband:jni - Enables building of Java Native Interface library
media-libs/rubberband:lv2 - Add support for Ladspa V2
media-libs/rubberband:programs - Builds also executable applications
media-libs/rubberband:vamp - Enables vamp plugins support (Audio analysing plugins)
media-libs/sdl-mixer:fluidsynth - Use media-sound/fluidsynth for MIDI support
media-libs/sdl-mixer:midi - basic support for MIDI files
media-libs/sdl-mixer:mod - basic support for MOD files
media-libs/sdl-mixer:playtools - Install playwave and playmus tools (useful for testing)
media-libs/sdl-mixer:smpeg - Use media-libs/smpeg for MP3 support
media-libs/sdl-mixer:wav - support WAVE files
media-libs/sdl2-mixer:fluidsynth - Use media-sound/fluidsynth for MIDI support
media-libs/sdl2-mixer:midi - basic support for MIDI files
media-libs/sdl2-mixer:mod - basic support for MOD files
media-libs/sdl2-mixer:playtools - Install playwave and playmus tools (useful for testing)
media-libs/sdl2-mixer:tremor - enable OGG Vorbis music via libtremor
media-libs/sdl2-mixer:wav - support WAVE files
media-libs/sdl2-ttf:harfbuzz - Use media-libs/harfbuzz for enhanced font rendering
media-libs/sdl_audiolib:fluidsynth - Enable support for MIDI via media-sound/fluidsynth
media-libs/sdl_audiolib:mpg123 - Enable support for mp3 decoding via media-sound/mpg123
media-libs/sdl_audiolib:openmpt - OpenMPT decoder via media-libs/libopenmpt
media-libs/sdl_audiolib:soxr - Enable SoX Resampler support via media-libs/soxr
media-libs/sdl_audiolib:wildmidi - Enable support for MIDI via media-sound/wildmidi
media-libs/sge:image - enable sdl-image support
media-libs/spandsp:fixed-point - Enable fixed point support
media-libs/speex:utils - Enables speex commandline utilities (speexenc, speexdec).
media-libs/speex:vbr - Enable VBR support.
media-libs/suil:gtk2 - Enable GTK2 based GUI support
media-libs/svgalib:kernel-helper - Build the helper kernel module
media-libs/tremor:low-accuracy - enable 32bit only multiply operations
media-libs/urt:tools - Install tools
media-libs/vips:archive - Enable support for compressed files using app-arch/libarchive
media-libs/vips:deprecated - Enable deprecated components
media-libs/vips:fits - Enable support for the Flexible Image Transport System data format using sci-libs/cfitsio
media-libs/vips:highway - Enable SIMD optimizations using dev-cpp/highway (replaces USE=orc)
media-libs/vips:imagequant - Enable support for Image Quantization using media-gfx/libimagequant
media-libs/vips:matio - Enable support for matlab files using sci-libs/matio
media-libs/vips:pango - Enable support for text rendering using x11-libs/pango
media-libs/vulkan-loader:layers - Include the vulkan layers
media-libs/waffle:wayland - Enable Wayland support
media-libs/x264:interlaced - enable interlaced encoding support, this can decrease encoding speed by up to 2%
media-libs/x264:pic - disable optimized assembly code that is not PIC friendly
media-libs/x265:10bit - Add support for producing 10bits HEVC.
media-libs/x265:12bit - Add support for producing 12bits HEVC.
media-libs/x265:numa - Build with support for NUMA nodes.
media-libs/xine-lib:bluray - Enable playback of Blu-ray filesystems using media-libs/libbluray
media-libs/xine-lib:dav1d - Enable support for media-libs/dav1d AV1 decoder
media-libs/xine-lib:dxr3 - Enable support for DXR3 mpeg acceleration cards.
media-libs/xine-lib:flac - Build the media-libs/flac based FLAC demuxer and decoder. This flag is not needed for playing FLAC content, neither standalone nor in Ogg container (OggFLAC), but might have better support for exotic features like 24-bit samples or 96kHz sample rates.
media-libs/xine-lib:gtk - Build the gdkpixbuf-based image decoder plugin.
media-libs/xine-lib:imagemagick - Build the ImageMagick-based image decoder plugin.
media-libs/xine-lib:mad - Build the media-libs/libmad based mp3 decoder. This mp3 decoder has superior support compared to the one coming from FFmpeg that is used as a fallback. If you experience any bad behaviour with mp3 files (skipping, distorted sound) make sure you enabled this USE flag.
media-libs/xine-lib:mmap - Use mmap() function while reading file from local disks. Using mmap() will use more virtual memory space, but leaves to the Kernel the task of caching the file's data. mmap() access should be faster, but might misbehave if the device where the file resides in is removed during playback.
media-libs/xine-lib:nfs - Allow accessing NFS shares via net-fs/libnfs.
media-libs/xine-lib:sftp - Use net-libs/libssh2 to access SFTP servers.
media-libs/xine-lib:truetype - Use media-libs/freetype for font rendering and media-libs/fontconfig for font discovery. Enabling this USE flag will allow OSD (such as subtitles) to use more advanced font and to more easily select which font to use. The support for TrueType fonts in xine-lib is still experimental, and might not be as good looking as the bitmap fonts used with this USE flag disabled.
media-libs/xine-lib:vdr - Build the VDR plugin
media-libs/xine-lib:vidix - Enable support for vidix video output.
media-libs/xine-lib:vis - Adds support for SIMD optimizations for UltraSPARC processors.
media-libs/xine-lib:vpx - Enable VP8 codec support via media-libs/libvpx.
media-libs/xine-lib:xvmc - Enable support for XVideo Motion Compensation (accelerated mpeg playback).
media-libs/xvid:pic - disable optimized assembly code that is not PIC friendly
media-libs/zita-resampler:tools - Install zresample and zretune tools
media-libs/zmusic:fluidsynth - Enable support for MIDI via media-sound/fluidsynth
media-libs/zmusic:mpg123 - Enable support for MPEG audio playback via media-sound/mpg123
media-plugins/alsa-plugins:arcam_av - Enables Arcam AV control plugin
media-plugins/alsa-plugins:mix - Enables upmix and vdownmix plugin
media-plugins/alsa-plugins:usb_stream - Enables usb_stream plugin
media-plugins/audacious-plugins:ampache - Support controlling audacious via ampache
media-plugins/audacious-plugins:bs2b - Enable Bauer Bauer stereophonic-to-binaural headphone filter
media-plugins/audacious-plugins:cue - Support CUE sheets using the libcue library
media-plugins/audacious-plugins:fluidsynth - Support FluidSynth as MIDI synth backend
media-plugins/audacious-plugins:gme - Support various gaming console music formats
media-plugins/audacious-plugins:http - Support HTTP streams through neon
media-plugins/audacious-plugins:openmpt - Add support for OpenMPT
media-plugins/audacious-plugins:pipewire - Build the PipeWire output plugin
media-plugins/audacious-plugins:scrobbler - Build with scrobbler/LastFM submission support
media-plugins/audacious-plugins:soxr - Build with SoX Resampler support
media-plugins/audacious-plugins:speedpitch - Enable speed/pitch effects
media-plugins/audacious-plugins:streamtuner - Build the streamtuner plugin
media-plugins/calf:experimental - Enable experimental features/plugins
media-plugins/calf:lv2 - Add support for Ladspa V2
media-plugins/frei0r-plugins:facedetect - Enables building of facedetect plugin, which depends on media-libs/opencv
media-plugins/frei0r-plugins:scale0tilt - Enables building of scale0tilt and vectorscope plugins, which depend on media-libs/gavl
media-plugins/gkrellmpc:threads - Use separate thread to init connection (unsafe)
media-plugins/grilo-plugins:chromaprint - Enable Chromaprint support
media-plugins/grilo-plugins:daap - Enable dmap support through net-libs/libdmapsharing
media-plugins/grilo-plugins:flickr - Enable Flickr support
media-plugins/grilo-plugins:freebox - Build support for viewing TV channels using Freebox
media-plugins/grilo-plugins:gnome-online-accounts - Enable net-libs/gnome-online-accounts support
media-plugins/grilo-plugins:thetvdb - Build support for thetvdb.com
media-plugins/grilo-plugins:tracker - Build support for content discovery using the app-misc/tracker indexer
media-plugins/grilo-plugins:youtube - Build support for YouTube content discovery using dev-libs/libgdata
media-plugins/gst-plugins-gtk:gles2 - Enable gtkglsink OpenGL sink based on GLESv2 API
media-plugins/gst-plugins-gtk:opengl - Enable gtkglsink OpenGL sink based on desktop OpenGL API
media-plugins/gst-plugins-meta:http - Enable http streaming via net-libs/libsoup
media-plugins/gst-plugins-meta:libvisual - Enable visualization effects via media-libs/libvisual
media-plugins/gst-plugins-meta:vpx - Enables vp8 codec support using libvpx, required to play some HTML5 videos
media-plugins/gst-plugins-vaapi:drm - Enable DRM renderer
media-plugins/gst-plugins-vaapi:gles2 - Enable GLESv2 and GLESv3 support
media-plugins/imlib2_loaders:xcf - Enable XCF image loader
media-plugins/ir_lv2:tools - Build convert4chan tool
media-plugins/mpg123-output-plugins:int-quality - Use rounding instead of fast truncation for integer output, where possible
media-plugins/vdr-cdplayer:cdparanoia - Enable cdparanoia (audio CD ripper) support
media-plugins/vdr-dvbapi:dvbcsa - use media-libs/libdvbcsa free implementation of the DVB Common Scrambling Algorithm
media-plugins/vdr-epgsearch:conflictcheckonly - install the "conflictcheckonly" vdr-plugin
media-plugins/vdr-epgsearch:epgsearchonly - install the "epgsearchonly" vdr-plugin
media-plugins/vdr-epgsearch:quicksearch - install the "quicksearch" vdr-plugin
media-plugins/vdr-epgsearch:tre - Add support for unlimited fuzzy searching with help of dev-libs/tre library
media-plugins/vdr-streamdev:client - Compile the VDR plugin vdr-streamdev-client that can connect a vdr to a remote streamdev-server instance
media-plugins/vdr-streamdev:server - Compile the VDR plugin vdr-streamdev-server that allows remote systems to access the vdr using streamdev-specific VTP and HTTP protocol
media-plugins/vdr-vdrmanager:stream - Add support for streaming Video to Android client
media-plugins/vdr-weatherng:dxr3 - enables lower osd color depth for dxr3 cards
media-plugins/vdr-xineliboutput:bluray - Enable BluRay metadata support through media-libs/libbluray
media-plugins/vdr-xineliboutput:cec - Enable CEC support through dev-libs/libcec
media-plugins/vdr-xineliboutput:vdr - Compile the vdr output plugin to use local or remote xine as output
media-plugins/vdr-xineliboutput:xine - Compile the xine input plugin for displaying vdr video and OSD
media-radio/ax25-tools:X - Enable some X based configuration tools.
media-radio/chirp:radioreference - pull in optional deps for query of radioreference
media-radio/direwolf:hamlib - Enables support by the Hamlib amateur radio rig control library
media-radio/fldigi:hamlib - Enables support by the Hamlib amateur radio rig control library to get/set frequency and mode of the ham radio in use
media-radio/svxlink:qt5 - Build and install qtel application
media-radio/svxlink:rtlsdr - Add support for rtlsdr hardware
media-radio/tucnak:hamlib - Enables support by the Hamlib amateur radio rig control library to get/set frequency and mode of the ham radio
media-radio/tucnak:rtlsdr - Add support for rtlsdr hardware
media-radio/unixcw:ncurses - Enables building the curses based morse code tutor program 'cwcp'.
media-radio/xastir:geotiff - Install geotiff support. Allows using USGS DRG topo maps or other types of geotiff mapes/images
media-sound/abcde:aiff - Enable support for Audio Interchange File Format (AIFF) output encoding
media-sound/abcde:id3tag - Support ID3, ID3v2 tagging of audio files
media-sound/abcde:mac - Enable support for Monkey's Audio files
media-sound/abcde:normalize - Add support for normalizing audio file volume levels
media-sound/abcde:replaygain - Support for Replay Gain metadata, for relative volume adjustment
media-sound/abcm2ps:pango - Use the pango library to render fonts with non-latin characters
media-sound/alsa-utils:bat - install basic audio tester (BAT) util
media-sound/alsa-utils:libsamplerate - install utils that use libsamplerate (e.g. alsaloop)
media-sound/alsa-utils:ncurses - install utils that use ncurses (e.g. alsamixer)
media-sound/alsaplayer:id3tag - Enables ID3 tagging with id3tag library
media-sound/amsynth:dssi - Enable support for DSSI Soft Synth Interface
media-sound/amsynth:lv2 - Add support for Ladspa V2
media-sound/amsynth:nsm - Build support for Non Session Manager
media-sound/amsynth:vst - Build VST plug-in
media-sound/apulse:sdk - Install PulseAudio headers and pkg-config files. Be aware apulse is not a full PulseAudio replacement by design and some functionality may be missing.
media-sound/aqualung:ifp - Enable support for iRiver iFP portable audio players
media-sound/aqualung:lua - Enable support for programmable title formatting with dev-lang/lua
media-sound/aqualung:mac - Enable support for decoding Monkey's Audio files
media-sound/aqualung:podcast - Enable podcast support
media-sound/aqualung:systray - Enable system tray support
media-sound/ardour:phonehome - contact ardour.org at startup for new announcements
media-sound/ario:idle - Enable experimental support for MPD's idle command to reduce bandwidth and cpu usage, requires MPD 0.14
media-sound/asunder:mac - Support for creation of Monkey's Audio files (APE)
media-sound/audacity:audiocom - Enable integrated uploading to audio.com
media-sound/audacity:id3tag - Enables ID3 tagging with id3tag library
media-sound/audacity:lv2 - Add support for Ladspa V2
media-sound/audacity:mpg123 - Use media-sound/mpg123-base instead of media-libs/libmad for MPEG decoding
media-sound/audacity:portmixer - Enable the internal portmixer feature
media-sound/audacity:sbsms - Enables sbsms library support for slower, more accurate pitch and tempo changing
media-sound/audacity:twolame - Enables twolame support (MPEG Audio Layer 2 encoder)
media-sound/audacity:vamp - Enables vamp plugins support (Audio analysing plugins)
media-sound/audiotools:cue - Enable CUE sheet support
media-sound/audiotools:dvda - Enable DVD-Audio support
media-sound/audiotools:twolame - Enable twolame support (MPEG Audio Layer 2 encoder)
media-sound/bluez-alsa:aptx - aptX (HD) over Bluetooth (many Android compatible headphones)
media-sound/bluez-alsa:hcitop - Enable top-like monitoring tool for HCI
media-sound/bluez-alsa:ldac - Enable support for AOSP media-libs/libldac dispatcher
media-sound/bluez-alsa:liblc3 - Enable LC3-SWB audio support for HFP
media-sound/bluez-alsa:mpg123 - Enable support for MPEG audio playback via media-sound/mpg123
media-sound/bluez-alsa:msbc - Enable mSBC audio support for HFP
media-sound/bluez-alsa:ofono - Enable oFono telephony support
media-sound/cadence:a2jmidid - Enables support for legacy ALSA sequencer applications in JACK MIDI system
media-sound/cantata:cdio - Use dev-libs/libcdio-paranoia for CD support (instead of cdparanoia)
media-sound/cantata:http-server - Enable internal HTTP server to play non-MPD files
media-sound/cantata:replaygain - Enable ReplayGain support, for relative volume adjustments
media-sound/cantata:streaming - Enable playback of MPD HTTP streams using LibVLC (media-video/vlc)
media-sound/cava:pipewire - Enable support for the media-video/pipewire backend
media-sound/cava:sndio - Enable support for the media-sound/sndio backend
media-sound/clementine:box - Enable filesharing via Box.com
media-sound/clementine:dropbox - Enable Dropbox support
media-sound/clementine:googledrive - Enable Google Drive support
media-sound/clementine:lastfm - Use liblastfm for fetching song info, scrobbling and radio streams
media-sound/clementine:moodbar - Enable moodbar support
media-sound/clementine:projectm - Build with ProjectM visualization
media-sound/clementine:seafile - Enable support for seafile: a file sync service
media-sound/clementine:skydrive - Enable Skydrive support
media-sound/clementine:wiimote - Enable support for Wii remote
media-sound/cmus:cdio - Use libcdio for CD support
media-sound/cmus:discid - Enable reading the ID of the inserted CD
media-sound/cmus:elogind - Enable MPRIS support via sys-auth/elogind
media-sound/cmus:pidgin - Install support script for net-im/pidgin
media-sound/cmus:sndio - Add support for media-sound/sndio
media-sound/cmus:systemd - Enable MPRIS support via sys-apps/systemd
media-sound/cmus:tremor - Use libivorbis from media-libs/tremor instead of media-libs/libvorbis
media-sound/csound:beats - Build the beats score frontend
media-sound/csound:double-precision - Use double-precision floating point for audio samples
media-sound/csound:dssi - Build the DSSI opcodes
media-sound/csound:portmidi - Build the PortMIDI I/O module
media-sound/csound:samples - Install the HRTF datafiles for use with hrtfmove, hrtfmove2, hrtfstat, hrtfearly, and hrtfreverb
media-sound/csound:utils - Build stand-alone executables for utilities that can also be used via `csound -U`
media-sound/darkice:twolame - Build with twolame support
media-sound/deadbeef:converter - File format converter
media-sound/deadbeef:cover - Support for cover art
media-sound/deadbeef:hotkeys - Keyboard shortcuts support
media-sound/deadbeef:lastfm - last.fm/AudioScrobbler protocol support
media-sound/deadbeef:libretro - libretro resampling plugin
media-sound/deadbeef:libsamplerate - Support the Secret Rabbit Code resampler
media-sound/deadbeef:notify - Desktop notifications support
media-sound/deadbeef:nullout - Dummy output driver
media-sound/deadbeef:pipewire - Pipewire output plugin
media-sound/deadbeef:sc68 - Atari ST and Amiga music player
media-sound/deadbeef:shellexec - Define custom shell commands that can be called on tracks
media-sound/deadbeef:supereq - Enable equalizer
media-sound/denemo:alsa - Enable alsa support through media-libs/alsa-lib
media-sound/denemo:aubio - Enable media-libs/aubio support
media-sound/denemo:jack - Enable jack support through virtual/jack
media-sound/denemo:portaudio - Enable support for media-libs/portaudio
media-sound/denemo:portmidi - Enable support for the media-libs/portmidi backend
media-sound/denemo:rubberband - Enable support for media-libs/rubberband
media-sound/dir2ogg:mac - Add support for decoding Monkey's Audio files
media-sound/dir2ogg:wma - Add support for wma files through mplayer
media-sound/drumstick:fluidsynth - Enable support for media-sound/fluidsynth
media-sound/drumstick:network - Build Network RT backend
media-sound/easyeffects:calf - Enable use of media-plugins/calf for adding various FX
media-sound/easyeffects:doc - Install packages needed to display built-in user documentation
media-sound/easyeffects:mda-lv2 - Enable use of media-plugins/mda-lv2 for the loudness FX
media-sound/easyeffects:zamaudio - Enable use of media-plugins/zam-plugins for the maximizer FX
media-sound/ecasound:lv2 - Add support for Ladspa V2
media-sound/ecasound:oil - Use dev-libs/liboil for inner loop optimizations
media-sound/elisa:mpris - Enable MPRIS support
media-sound/elisa:vlc - Use media-video/vlc for output rather than dev-qt/qtmultimedia
media-sound/fapg:xspf - Enable support for saving XSPF playlists.
media-sound/fluidsynth:network - enable network support (requires BSD sockets)
media-sound/fluidsynth:pipewire - enable media-video/pipewire support
media-sound/gimmix:cover - Enable cover art fetching
media-sound/gimmix:lyrics - Enable lyric fetching
media-sound/guitarix:lv2 - Build lv2 plugins
media-sound/guitarix:nsm - Build NSM (Non Session Manager) support
media-sound/guitarix:standalone - Build standalone application
media-sound/hydrogen:archive - Use libarchive instead of libtar
media-sound/hydrogen:portmidi - Add portmidi support
media-sound/jack-audio-connection-kit:pam - Add basic realtime configuration via sys-auth/realtime-base
media-sound/jack-example-tools:jack-net - Build jack_net_* example clients
media-sound/jack-example-tools:jack-netsource - Build jack_netsource for configuring network sources
media-sound/jack-example-tools:zalsa - Build the zalsa internal client using media-libs/zita-resampler
media-sound/jack2:classic - Enable building of jackd
media-sound/jack2:metadata - Enable metadata API
media-sound/jack2:pam - Add basic realtime configuration via sys-auth/realtime-base
media-sound/jack2:tools - Pull basic tools (e.g. jack_lsp/connect) from media-sound/jack-example-tools
media-sound/kasts:vlc - Enable media-video/vlc backend
media-sound/kid3:acoustid - Build acoustic fingerprinting plugin using media-libs/chromaprint
media-sound/kid3:mpris - Enable support for MPRIS2 interface using dev-qt/qtdbus
media-sound/klick:rubberband - Enable rubberband support
media-sound/lame:frontend - Build and install the 'lame' executable frontend to lame libraries.
media-sound/lame:mp3rtp - Build the mp3-to-RTP streaming utility. **UNSUPPORTED**
media-sound/liblc3:tools - Enable extra tools
media-sound/linux-show-player:midi - Allow cues to send, or trigger on, MIDI messages
media-sound/linux-show-player:timecode - Support the sending of time code of running audio files over ArtNet, for instance to trigger cues in lighting-control software on lighting desks
media-sound/linuxsampler:lv2 - Add support for Ladspa V2
media-sound/linuxsampler:sf2 - Add support for SoundFont 2 sound bank files
media-sound/lmms:fluidsynth - Enables Fluidsynth MIDI software synthesis plugin.
media-sound/lmms:libgig - Enables GIG player plugin.
media-sound/lmms:soundio - Enables libsoundio support.
media-sound/lmms:stk - Enables STK Mallet plugin.
media-sound/lmms:vst - Enables the VeSTige plugin to run VST plugins through Wine.
media-sound/mangler:espeak - Text to speech engine
media-sound/mangler:g15 - Logitech g15 lcd support
media-sound/mixxx:hid - Enable HID controller support
media-sound/mixxx:keyfinder - Enable musical key detection support via media-libs/libkeyfinder
media-sound/mixxx:lv2 - Add support for Ladspa V2 via media-libs/lilv
media-sound/mixxx:modplug - Add libmodplug support
media-sound/mixxx:qtkeychain - Enable Secure credential storage support via dev-libs/qtkeychain
media-sound/mixxx:shout - Enable broadcasting support via media-libs/libshout
media-sound/moc:cache - Enable tags caching support
media-sound/moc:sndio - Enable support for the media-sound/sndio backend
media-sound/moc:tremor - Build vorbis support using an integer implementation of the vorbis library (media-libs/tremor)
media-sound/mpd:cdio - Use libcdio for ISO9660 parsing support
media-sound/mpd:chromaprint - Enable ChromaPrint / AcoustID support
media-sound/mpd:cue - Enable CUE sheet support
media-sound/mpd:curl - Support for web stream listening
media-sound/mpd:eventfd - Use the eventfd function in MPD's event loop
media-sound/mpd:faad - Use external faad library for AAC decoding
media-sound/mpd:fifo - Support writing audio to a FIFO
media-sound/mpd:fluidsynth - Enables Fluidsynth MIDI software synthesis (discouraged)
media-sound/mpd:gme - Enables support for media-libs/game-music-emu for playing various video game music formats.
media-sound/mpd:id3tag - Support for ID3 tags
media-sound/mpd:inotify - Use the Linux kernel inotify subsystem to notice changes to mpd music library
media-sound/mpd:io-uring - Enable support for io_uring
media-sound/mpd:lame - Support for MP3 streaming via Icecast2
media-sound/mpd:libmpdclient - Enable support for remote mpd databases
media-sound/mpd:libsoxr - Enable the libsoxr resampler
media-sound/mpd:mpg123 - Enable support for mp3 decoding over media-sound/mpg123
media-sound/mpd:network - Enables network streaming support
media-sound/mpd:nfs - Enable support for the Network File System
media-sound/mpd:openmpt - OpenMPT decoder plugin
media-sound/mpd:pipe - Support writing audio to a pipe
media-sound/mpd:pipewire - PipeWire support
media-sound/mpd:qobuz - Build plugin to access qobuz
media-sound/mpd:recorder - Enables output plugin for recording radio streams
media-sound/mpd:signalfd - Use the signalfd function in MPD's event loop
media-sound/mpd:snapcast - Snapcast audio plugin
media-sound/mpd:sndio - Enable support for the media-sound/sndio backend
media-sound/mpd:soundcloud - Build plugin to access soundcloud
media-sound/mpd:systemd - Enable support for systemd socket activation
media-sound/mpd:twolame - Support twolame MPEG-2 encoding
media-sound/mpd:webdav - Enable using music from a WebDAV share
media-sound/mpd:wildmidi - Enable MIDI support via wildmidi
media-sound/mpd:yajl - Enable JSON parsing via dev-libs/yajl
media-sound/mpfc:wav - Enable wav audio codec support
media-sound/mpg123:int-quality - Use rounding instead of fast truncation for integer output, where possible
media-sound/mpg123-base:int-quality - Use rounding instead of fast truncation for integer output, where possible
media-sound/musescore:omr - Enable PDF import (OMR - optical music recognition)
media-sound/musescore:osc - Enable OSC remote control protocol
media-sound/musescore:portmidi - Enable support for building against media-libs/portmidi
media-sound/musescore:sf3 - Enable SoundFont 3 support using media-libs/libvorbis
media-sound/musescore:sfz - Enable experimental SFZ sampler
media-sound/musescore:video - Support exporting scores as videos using the command line
media-sound/musescore:webengine - Use dev-qt/qtwebengine for embedded web browser
media-sound/ncmpc:async-connect - Enable asynchronous connect
media-sound/ncmpc:chat-screen - Enable the chat screen
media-sound/ncmpc:help-screen - Enable the help screen
media-sound/ncmpc:key-screen - Enable key editor screen
media-sound/ncmpc:library-screen - Enable library screen
media-sound/ncmpc:lyrics-screen - Enable lyrics screen
media-sound/ncmpc:mouse - Enable curses getmouse support
media-sound/ncmpc:outputs-screen - Enable the outputs screen
media-sound/ncmpc:search-screen - Enable search screen
media-sound/ncmpc:song-screen - Enable song viewer screen
media-sound/ncmpcpp:clock - Enable clock screen
media-sound/ncmpcpp:outputs - Enable outputs screen
media-sound/ncmpcpp:visualizer - Enable visualizer screen with sound wave/frequency spectrum modes
media-sound/ncspot:clipboard - Use the system clipboard to e.g. share a link
media-sound/ncspot:cover - Support displaying the album cover
media-sound/ncspot:mpris - Allow ncspot to be controlled via MPRIS API
media-sound/ncspot:ncurses - Use cursive/ncurses-backend instead of crossterm or pancurses
media-sound/ncspot:notify - Show what's playing via a notification
media-sound/owntone:chromecast - build and install Chromecast support
media-sound/patchage:jack-dbus - Use Jack via D-Bus instead of libjack
media-sound/picard:discid - Enable reading the ID of the inserted CD
media-sound/picard:fingerprints - Enable calculation and lookup of AcoustID fingerprints
media-sound/pithos:keybinder - Use keybinder to enable global key bindings
media-sound/pms:regex - Enable regular expression searches
media-sound/puddletag:acoustid - Use media-libs/chromaprint for acoustic fingerprinting
media-sound/puddletag:quodlibet - Enables support for editing media-sound/quodlibet databases
media-sound/pulseaudio:daemon - Build the pulseaudio binary (not-needed for pipewire-pulse)
media-sound/pulseaudio:glib - Add support to dev-libs/glib-based mainloop for the libpulse client library, to allow using libpulse on glib-based programs. Build the GSettings PA module.
media-sound/pulseaudio:ofono-headset - Build with oFono HFP backend for bluez 5, requires net-misc/ofono.
media-sound/pulseaudio-daemon:X - Build the X11 publish module to export PulseAudio information through X11 protocol for clients to make use. Don't enable this flag if you want to use a system wide instance. If unsure, enable this flag.
media-sound/pulseaudio-daemon:alsa-plugin - Request installing media-plugins/alsa-plugins with PulseAudio plugin enabled. This ensures that clients supporting ALSA only will use PulseAudio.
media-sound/pulseaudio-daemon:aptx - aptX (HD) over Bluetooth (many Android compatible headphones), requires media-plugins/gst-plugins-openaptx.
media-sound/pulseaudio-daemon:asyncns - Use libasyncns for asynchronous name resolution.
media-sound/pulseaudio-daemon:elogind - Use sys-auth/elogind for giving each session a PA client
media-sound/pulseaudio-daemon:equalizer - Enable the equalizer module (requires sci-libs/fftw and sys-apps/dbus).
media-sound/pulseaudio-daemon:fftw - Enable the virtual surround sink module (requires sci-libs/fftw).
media-sound/pulseaudio-daemon:gdbm - Use sys-libs/gdbm to store PulseAudio databases. Recommended for desktop usage. This flag causes the whole package to be licensed under GPL-2 or later.
media-sound/pulseaudio-daemon:glib - Build the GSettings PA module.
media-sound/pulseaudio-daemon:gstreamer - Build GStreamer-based RTP protocol module which supports more advanced RTP features like OPUS payload encoding.
media-sound/pulseaudio-daemon:ldac - LDAC over Bluetooth (primarily Sony headphones), requires media-plugins/gst-plugins-ldac.
media-sound/pulseaudio-daemon:ofono-headset - Build with optional oFono HFP backend for bluez 5, requires net-misc/ofono.
media-sound/pulseaudio-daemon:oss - Enable OSS sink/source (output/input). Deprecated, upstream does not support this on systems where other sink/source systems are available (i.e.: Linux). The padsp wrapper is now always build if the system supports OSS at all.
media-sound/pulseaudio-daemon:ssl - Use dev-libs/openssl to provide support for RAOP (AirPort) streaming.
media-sound/pulseaudio-daemon:system-wide - Allow preparation and installation of the system-wide init script for PulseAudio. Since this support is only supported for embedded situations, do not enable without reading the upstream instructions at https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/WhatIsWrongWithSystemWide/ .
media-sound/pulseaudio-daemon:systemd - Build with sys-apps/systemd support to replace standalone ConsoleKit.
media-sound/pulseaudio-daemon:webrtc-aec - Uses the webrtc.org AudioProcessing library for enhancing VoIP calls greatly in applications that support it by performing acoustic echo cancellation, analog gain control, noise suppression and other processing.
media-sound/pulseeffects:bs2b - Enable use of media-libs/libbs2b for the crossfeed FX
media-sound/pulseeffects:calf - Enable use of media-plugins/calf for adding various FX
media-sound/pulseeffects:doc - Install packages needed to display built-in user documentation
media-sound/pulseeffects:rnnoise - Enable use of media-libs/rnnoise for the neural network-based noise-reduction FX
media-sound/pulseeffects:rubberband - Enable use of media-libs/rubberband for the pitch-shifting FX
media-sound/pulseeffects:webrtc - Enable use of media-plugins/gst-plugins-webrtc for various voice-enhancement FX
media-sound/pulseeffects:zamaudio - Enable use of media-plugins/zam-plugins for the maximizer FX
media-sound/qmidiarp:lv2 - Enables Ladspa V2 plugins.
media-sound/qmmp:analyzer - Enable visual analyzer
media-sound/qmmp:archive - Enable archiving plugin via app-arch/libarchive.
media-sound/qmmp:bs2b - Enable Bauer stereophonic-to-binaural headphone filter
media-sound/qmmp:cover - Enable album cover support
media-sound/qmmp:crossfade - Enable crossfade effect when switching tracks
media-sound/qmmp:cue - enable CUE sheet parsing
media-sound/qmmp:dbus - Enable DBus notifiications and MPRIS support
media-sound/qmmp:enca - Detects the character encoding automatically
media-sound/qmmp:game - Enable Game music support
media-sound/qmmp:gnome - Enable Gnome hotkey support (requires Qt5DBus)
media-sound/qmmp:lyrics - Fetch track lyrics from the web
media-sound/qmmp:midi - Enable midi support using wildmidi library
media-sound/qmmp:notifier - Enable qmmps' notifier system
media-sound/qmmp:pipewire - Enable PipeWire output plugin
media-sound/qmmp:projectm - Enable projectm music visualization plugin
media-sound/qmmp:qsui - Enable QMMP simple UI
media-sound/qmmp:qtmedia - Enable playback via dev-qt/qtmultimedia
media-sound/qmmp:scrobbler - Enable audioscrobbler/last.fm support
media-sound/qmmp:shout - Enable shoutcast plug-in via media-libs/libshout.
media-sound/qmmp:sndfile - Enable wav playback support via media-libs/libsndfile
media-sound/qmmp:soxr - Use the SoX resampling library
media-sound/qmmp:stereo - Enable stereo effect
media-sound/qmmp:tray - Build tray icon
media-sound/qmmp:xmp - Enable module files renderer (modplug replacement)
media-sound/qsampler:libgig - Enable libgig support for loading Gigasampler files and DLS (Downloadable Sounds) Level 1/2 files
media-sound/qtractor:aubio - Enable media-libs/aubio support
media-sound/qtractor:dssi - Enable support for DSSI Soft Synth Interface
media-sound/qtractor:rubberband - Enable support for in-place audio clip pitch-shifting through the rubberband library
media-sound/rhythmbox:daap - Build the local network music sharing plugin which uses the DAAP protocol using net-libs/libdmapsharing
media-sound/scream:pcap - Support sniffing packets from network using net-libs/libpcap
media-sound/shntool:alac - Add support for Apple Lossless Audio Codec files
media-sound/shntool:mac - Add support for Monkey's Audio files
media-sound/shntool:shorten - Add support for the shorten audio compressor
media-sound/snapcast:client - Build and install Snapcast client component
media-sound/snapcast:server - Build and install Snapcast server component
media-sound/snapcast:tremor - Build with TREMOR version of vorbis
media-sound/snd:notcurses - Terminal interface via dev-cpp/notcurses
media-sound/snd:s7 - Enable the s7 extension language (a version of Scheme)
media-sound/sonic-visualiser:id3tag - Enables ID3 tagging with id3tag library
media-sound/sox:amr - Enables Adaptive Multi-Rate Audio support
media-sound/sox:id3tag - Enables ID3 tagging with id3tag library
media-sound/sox:sndio - Enable support for sndio
media-sound/sox:twolame - Enables twolame support (MPEG Audio Layer 2 encoder)
media-sound/split2flac:enca - Try to guess the charset using enca
media-sound/split2flac:flake - Add support for Flake, alternative FLAC encoder
media-sound/split2flac:mac - Add support for Monkey's Audio files
media-sound/split2flac:replaygain - Support for Replay Gain metadata, for relative volume adjustment
media-sound/spotify:local-playback - Allows playing local files with the Spotify client
media-sound/spotify:pax-kernel - Triggers a paxmarking of the main Spotify binary
media-sound/spotify:pulseaudio - Controls the dependency on pulseaudio or apulse
media-sound/strawberry:moodbar - Enable moodbar support
media-sound/strawberry:soup - Allow streaming with media-plugins/gst-plugins-soup
media-sound/strawberry:vlc - Enable media-video/vlc backend
media-sound/supercollider:ableton-link - Enable support for Ableton Link
media-sound/supercollider:emacs - Enable the SCEL user interface
media-sound/supercollider:gedit - Enable the SCED user interface
media-sound/supercollider:gpl3 - Build GPL-3 licensed code (recommended)
media-sound/supercollider:server - Build with internal server
media-sound/supercollider:vim - Enable the SCVIM user interface
media-sound/supercollider:webengine - Enable the internal help system using QtWebengine
media-sound/teamspeak-client:system-libcxx - Use sys-libs/libcxx instead of shipped libs.
media-sound/teamspeak-client:system-quazip - Use dev-libs/quazip instead of shipped libs.
media-sound/teamspeak-server:tsdns - Install TeamSpeaks own DNS service for handling multiple virtual servers.
media-sound/upmpdcli:thirdparty - Enable streaming from Qobuz and Tidal external services
media-sound/vimpc:boost - Use boost instead of C++11 libraries
media-sound/vorbis-tools:kate - Adds support for Ogg Kate subtitles via libkate.
media-sound/vorbis-tools:ogg123 - Build ogg123 player, needs libao and curl
media-sound/wildmidi:player - Install the wildmidi player
media-sound/wildmidi:sndio - Enable support for the media-sound/sndio backend
media-sound/xmms2:airplay - Support for airplay format
media-sound/xmms2:fluidsynth - Enable fluidsynth support (MIDI)
media-sound/xmms2:gme - Support for various game audio formats using media-libs/game-music-emu
media-sound/xmms2:ices - Icecast source output plugin
media-sound/xmms2:libvisual - Install xmms2-libvisual for use with the 'visualization' effect
media-sound/xmms2:mac - Support for Monkey's Audio (APE) format using media-sound/mac
media-sound/xmms2:mlib-update - Enable building of xmms2-mlib-updater client
media-sound/xmms2:server - Build xmms2 player daemon (otherwise only clients are built)
media-sound/xmms2:tremor - Support Vorbis using an alternate fixed-point decoder with media-libs/tremor
media-sound/xmms2:vocoder - Phase vocoder effect plugin
media-sound/xmms2:xml - Enable support for various XML based playlists and sources: RSS, XSPF
media-sound/xwax:alsa - Adds support for ALSA audio input/output.
media-sound/xwax:cdda - Sets runtime dependencies to support decoding audio from a compact disc.
media-sound/xwax:fallback - Sets runtime dependencies to support decoding "other" audio files.
media-sound/xwax:mp3 - Sets runtime dependencies to support decoding MP3 audio.
media-sound/xwax:oss - Adds support for OSS (open sound system) audio input/output.
media-sound/yarock:mpv - Enable media-video/mpv backend
media-sound/yarock:phonon - Enable media-libs/phonon backend
media-sound/yarock:vlc - Enable media-video/vlc backend
media-sound/yoshimi:lv2 - Add support for Ladspa V2
media-sound/zynaddsubfx:dssi - Enable support for DSSI Soft Synth Interface
media-tv/kodi:airplay - enable AirPlay support
media-tv/kodi:bluetooth - Enable JSON-RPC over BT for remote control connected via bluetooth
media-tv/kodi:bluray - Enable playback of Blu-ray filesystems
media-tv/kodi:caps - Use sys-libs/libcap to bind to privileged ports as non-root
media-tv/kodi:cec - Enable support for HDMI-CEC devices via libcec
media-tv/kodi:eventclients - Install full set of Kodi python evenclients and evenclients examples
media-tv/kodi:gbm - Use the Graphics Buffer Manager for EGL on KMS.
media-tv/kodi:gles - Use simplified OpenGLES instead of full-scale OpenGL
media-tv/kodi:libusb - Use virtual/libusb for usb device hotplug support. This flag should only be enabled if you're running a non-Linux kernel or you don't want to use udev.
media-tv/kodi:lirc - Enable support for IR remote controls using app-misc/lirc
media-tv/kodi:mariadb - Enable support store of media library metadata on local or remote MariaDB
media-tv/kodi:mysql - Enable support store of media library metadata on local or remote MySQL
media-tv/kodi:nfs - Enable NFS client support
media-tv/kodi:optical - Enable Audio CD playback, optical disks detection and reading (CD-ROM, Video CD, and others), and ISO optical disk images direct reading. DVD disks may require additional 'udf' flag.
media-tv/kodi:pipewire - Enable pipewire support
media-tv/kodi:soc - Use additional media-video/ffmpeg patches for efficient playback on some SoCs (e.g. ARM, RISC-V)
media-tv/kodi:system-ffmpeg - Use system ffmpeg instead of the bundled one
media-tv/kodi:udev - Use udev rules to handle devices' permissions and hotplug support. Unless you know what you're doing do not disable this flag on Linux kernels. This is provided as an option for completeness.
media-tv/kodi:udf - Enable UDF support. Required for playing blurays.
media-tv/kodi:webserver - Enable internal webserver
media-tv/kodi:xslt - Enable metadata XSLT scrapers support with dev-libs/libxslt
media-tv/linuxtv-dvb-apps:alevt - Build videotext decoder
media-tv/mythtv:alsa - Allows MythTV to directly output sound to ALSA devices
media-tv/mythtv:asi - Support for DVEO ASI recorder
media-tv/mythtv:autostart - Use a custom autostart configuration
media-tv/mythtv:cec - Allows control of CEC enabled TVs via HDMI
media-tv/mythtv:ceton - Ceton InfiniTV 4 a CableCARD-enabled tuner support
media-tv/mythtv:debug - Instructs Qt to use the 'debug' target
media-tv/mythtv:fftw - Support visualizations via sci-libs/fftw
media-tv/mythtv:hdhomerun - Silicondust USA Inc.network-attached tuner support
media-tv/mythtv:ieee1394 - Firewire enabled Cable boxe support
media-tv/mythtv:jack - Allows MythTV to use JACK as your sound output device
media-tv/mythtv:java - BD-J support for Blu-ray discs
media-tv/mythtv:lcd - Enable use of app-misc/lcdproc data display
media-tv/mythtv:lirc - LIRC remote control device support
media-tv/mythtv:nvdec - Enable NVDEC (NVCUVID) hardware accelerated video decoding
media-tv/mythtv:perl - Build the perl bindings for MythTV
media-tv/mythtv:vbox - V@Box Communications network-attached tuner devices support
media-tv/mythtv:vpx - Enable VP8/VP9 support for media-libs/libvpx
media-tv/mythtv:wrapper - Use Ubuntu mythtfrontend wrapper
media-tv/mythtv:x265 - Enable h265 encoding using x265
media-tv/mythtv:xmltv - Support media-tv/xmltv TV listing - not used by Schedules Direct]
media-tv/tvheadend:ddci - Enable support for DDCI hardware
media-tv/tvheadend:dvbcsa - Enable decryption of the DVB Common Scrambling Algorithm
media-tv/tvheadend:hdhomerun - Enable support for the HDHomeRun device
media-tv/tvheadend:imagecache - Enable support for image caching
media-tv/tvheadend:iptv - Enable support for Internet Protocol TV
media-tv/tvheadend:satip - Enable support for IP-based Satellite TV
media-tv/tvheadend:timeshift - Enable TimeShift support
media-tv/tvheadend:uriparser - Use dev-libs/uriparser
media-tv/tvheadend:vpx - Enable transcoding with the VP8/VP9 video codecs
media-tv/tvheadend:x264 - Enable transcoding with the H.264 video codec
media-tv/tvheadend:x265 - Enable transcoding with the HEVC video codec
media-tv/tvheadend:xmltv - Use media-tv/xmltv
media-tv/xmltv:ar - Argentina tv listing grabber
media-tv/xmltv:ch-search - Grabber for Switzerland
media-tv/xmltv:eu-epgdata - include fanart URLs for some European countries.
media-tv/xmltv:eu-xmltvse - Grabbber for Europe [replaces eu-dotmedia and se-tvzon]
media-tv/xmltv:fi - Finland tv listing grabber (0.6.1 add ampparit telsu)
media-tv/xmltv:fi-sv - Grabber for Finland (Swedish)
media-tv/xmltv:fr - France tv listing grabber
media-tv/xmltv:huro - Hungarian tv listing grabber
media-tv/xmltv:is - Iceland tv listing grabber
media-tv/xmltv:it - Italy tv listing grabber (RUV)
media-tv/xmltv:it-dvb - Italy tv listing grabber
media-tv/xmltv:na-dd - North America tv listing grabber
media-tv/xmltv:na-dtv - North America Direct TV grabber
media-tv/xmltv:na-tvmedia - Grabber for North America (TVMedia)
media-tv/xmltv:pt-vodafone - Grabber for Portugal (Vodafone)
media-tv/xmltv:tr - Turkey (Digiturk) tv listing grabber
media-tv/xmltv:tv-check - enable GUI checking
media-tv/xmltv:tv-combiner - enable grabbers combiner
media-tv/xmltv:tv-pick-cgi - enable CGI support
media-tv/xmltv:uk-tvguide - UK and Ireland tv listing grabber using TV Guide website
media-tv/xmltv:zz-sdjson - Grabber for schedulesDirect.org SD-JSON service (many countries)
media-tv/xmltv:zz-sdjson-sqlite - Grabber for schedulesDirect.org SD-JSON service (sqlite DB)
media-video/aegisub:uchardet - Enable charset discovery via app-i18n/uchardet
media-video/amdgpu-pro-amf:pro - Pull media-libs/mesa as dependency
media-video/amdgpu-pro-amf:radv - Pull media-libs/amdgpu-pro-vulkan as dependency
media-video/aravis:fast-heartbeat - Enable faster heartbeat rate.
media-video/aravis:gstreamer - Build the GStreamer plugin.
media-video/aravis:packet-socket - Enable packet socket support.
media-video/aravis:viewer - Build the GTK+-based video viewer.
media-video/bluray_info:mpv - Build bluray_player, powered by media-video/mpv
media-video/droidcam:gtk - Build the dev-cpp/gtkmm:3.0 client.
media-video/dvd_info:libmpv - Build DVD player using libmpv
media-video/ffdiaporama:openclipart - Support openclipart database
media-video/ffmpeg:amf - Enables support for AMD's Advanced Media Framework (AMF)
media-video/ffmpeg:amr - Enables Adaptive Multi-Rate Audio support
media-video/ffmpeg:amrenc - Enables Adaptive Multi-Rate Audio encoding support with media-libs/vo-amrwbenc.
media-video/ffmpeg:appkit - Enables Apple AppKit framework
media-video/ffmpeg:bluray - Enable playback of Blu-ray filesystems
media-video/ffmpeg:bs2b - Enables media-libs/libbs2b based Bauer stereo-to-binaural filter.
media-video/ffmpeg:cdio - Enables audio CD grabbing with dev-libs/libcdio.
media-video/ffmpeg:chromaprint - Enables audio fingerprinting support with media-libs/chromaprint.
media-video/ffmpeg:chromium - Builds libffmpeg.so to enable media playback in Chromium-based browsers like Opera and Vivaldi.
media-video/ffmpeg:codec2 - Enables codec2 low bit rate speech codec support via media-libs/codec2.
media-video/ffmpeg:cpudetection - Enables runtime CPU detection (useful for bindist, compatibility on other CPUs)
media-video/ffmpeg:cuda - Enables CUDA-based acceleration. Mostly used for specific filters.
media-video/ffmpeg:dav1d - Enables AV1 decoding via media-libs/dav1d.
media-video/ffmpeg:fdk - Use external fdk-aac library for AAC encoding
media-video/ffmpeg:flite - Adds a text-to-speech filter based on app-accessibility/flite.
media-video/ffmpeg:frei0r - Enable frei0r wrapping in libavfilter
media-video/ffmpeg:fribidi - Enables fribidi support in the drawtext filter.
media-video/ffmpeg:gcrypt - Enables gcrypt support: Needed for rtmp(t)e support if openssl, librtmp or gmp is not used.
media-video/ffmpeg:glslang - Use dev-util/glslang to compile GLSL
media-video/ffmpeg:gme - Enables support for media-libs/game-music-emu for playing various video game music formats.
media-video/ffmpeg:gpl - Build GPL code. Should be enabled unless you require LGPL binaries.
media-video/ffmpeg:hardcoded-tables - Use pre-calculated tables rather than calculating them on the fly. It results in an increase of approximately 15% in the size of libavcodec, the main library impacted by this change. It enables savings in table generation time, done once at codec initialization, since by hardcoding the tables, they do not need to be computed at runtime. However, the savings are often negligible (~100k cycles is a typical number) especially when amortized over the entire encoding/decoding operation. Improvements are being made to the runtime initialization, and so over time, this option will have an impact on fewer and fewer codecs.
media-video/ffmpeg:iec61883 - Support for FireWire DV/HDV input device using media-libs/libiec61883.
media-video/ffmpeg:kvazaar - Enables media-libs/kvazaar based HEVC encoder.
media-video/ffmpeg:lcms - Enable ICC profile support via media-libs/lcms.
media-video/ffmpeg:libaom - Enables media-libs/libaom based AV1 codec support.
media-video/ffmpeg:libaribb24 - Enables ARIB text and caption decoding via media-libs/aribb24.
media-video/ffmpeg:libdrm - Enables x11-libs/libdrm support for better screen grabbing and hardware accelerated codecs.
media-video/ffmpeg:libdvdnav - Uses media-libs/libdvdnav to enable DVD demuxing
media-video/ffmpeg:libdvdread - Uses media-libs/libdvdread to enable DVD demuxing
media-video/ffmpeg:libilbc - Enables iLBC de/encoding via media-libs/libilbc.
media-video/ffmpeg:liblc3 - Enables LC3 de/encoding via media-sound/liblc3.
media-video/ffmpeg:libplacebo - Adds flexible GPU-accelerated processing filter based on media-libs/libplacebo.
media-video/ffmpeg:librtmp - Enables Real Time Messaging Protocol using librtmp (media-video/rtmpdump) in addition to FFmpeg's native implementation.
media-video/ffmpeg:libsoxr - Enables audio resampling through media-libs/soxr.
media-video/ffmpeg:libtesseract - Enables the OCR filter via app-text/tesseract.
media-video/ffmpeg:libv4l - Uses media-libs/libv4l for video4linux instead of direct calls. Adds support for more devices via the userspace library.
media-video/ffmpeg:libxml2 - Uses dev-libs/libxml2 to enable dash demuxing support.
media-video/ffmpeg:lv2 - Enables lv2 audio filter wrapper.
media-video/ffmpeg:mipsdspr1 - Enables MIPS DSP ASE R1 optimizations.
media-video/ffmpeg:mipsdspr2 - Enables MIPS DSP ASE R2 optimizations.
media-video/ffmpeg:mipsfpu - Enables floating point MIPS optimizations.
media-video/ffmpeg:mmal - Enables Multi-Media Abstraction Layer (MMAL) decoding support: Available e.g. on the Raspberry Pi.
media-video/ffmpeg:network - Enables network streaming support
media-video/ffmpeg:openh264 - Enables H.264 encoding suppoprt via media-libs/openh264.
media-video/ffmpeg:openssl - Enables dev-libs/openssl support. Adds support for encrypted network protocols (TLS/HTTPS).
media-video/ffmpeg:pic - Force shared libraries to be built as PIC (this is slower)
media-video/ffmpeg:postproc - Build and install libpostproc.
media-video/ffmpeg:qrcode - Enables QR encode generation via media-gfx/qrencode
media-video/ffmpeg:qsv - Enable Intel Quick Sync Video via media-libs/intel-mediasdk (ffmpeg versions older than, and including, 5.1) or media-libs/libvpl (ffmpeg version newer than 5.1).
media-video/ffmpeg:quirc - Enables QR decoding via media-libs/quirc
media-video/ffmpeg:rav1e - Enables AV1 encoding support via media-video/rav1e.
media-video/ffmpeg:rubberband - Adds time-stretching and pitch-shifting audio filter based on media-libs/rubberband.
media-video/ffmpeg:shaderc - Use media-libs/shaderc to compile GLSL
media-video/ffmpeg:snappy - Enable app-arch/snappy support. Required for e.g. Vidvox Hap encoder.
media-video/ffmpeg:sndio - Enable support for the media-sound/sndio backend
media-video/ffmpeg:soc - Apply additional patches for efficient playback on some SoCs (e.g. ARM, RISC-V).
media-video/ffmpeg:srt - Enable support for Secure Reliable Transport (SRT) via net-libs/srt
media-video/ffmpeg:ssh - Enable SSH/sftp support via net-libs/libssh.
media-video/ffmpeg:svt-av1 - Enables AV1 encoding support via media-libs/svt-av1.
media-video/ffmpeg:truetype - Enables drawtext filter via media-libs/freetype and media-libs/harfbuzz.
media-video/ffmpeg:twolame - Enables MP2 encoding via media-sound/twolame as an alternative to the internal encoder.
media-video/ffmpeg:vidstab - Enables video stabilization filter using vid.stab library (media-libs/vidstab).
media-video/ffmpeg:vmaf - Enables Netflix's perceptual video quality assessment filter using the library (media-libs/libvmaf).
media-video/ffmpeg:vpx - Enables VP8 and VP9 codec support using libvpx: Decoding does not require this to be enabled but libvpx can also be used for decoding; encoding requires this useflag to be enabled though.
media-video/ffmpeg:x265 - Enables HEVC encoding with media-libs/x265.
media-video/ffmpeg:zeromq - Enables net-libs/zeromq support with the zmq/azmq filters.
media-video/ffmpeg:zimg - Enables media-libs/zimg based scale filter.
media-video/ffmpeg:zvbi - Enables media-libs/zvbi based teletext decoder.
media-video/ffmpeg-chromium:cpudetection - Enables runtime CPU detection (useful for bindist, compatibility on other CPUs)
media-video/ffmpeg-chromium:gpl - Build GPL code. Should be enabled unless you require LGPL binaries.
media-video/guvcview:qt5 - Build with Qt5 interface instead Gtk+
media-video/handbrake:fdk - Support for encoding AAC using media-libs/fdk-aac.
media-video/handbrake:gstreamer - Support for the streaming media framework from media-libs/gstreamer.
media-video/handbrake:gtk - Install the GTK UI, ghb.
media-video/handbrake:numa - Adds support for x265's NUMA capabilities.
media-video/handbrake:x265 - Support for encoding h265 using media-libs/x265.
media-video/libva-utils:examples - Build and install decode, encode, videoprocess and other VA-API examples.
media-video/libva-utils:putsurface - Build and install putsurface tool.
media-video/libva-utils:vainfo - Build and install vainfo tool.
media-video/makemkv:java - Handle additional Blu-ray protection mechanisms involving Java
media-video/mjpegtools:sdlgfx - Enables y4mhist to display a graphical histogram
media-video/mjpg-streamer:http-management - Enable experimental HTTP management option
media-video/mjpg-streamer:input-control - Plugin giving ability to control camera movement (only specific cameras)
media-video/mjpg-streamer:input-file - Plugin that watches given directory and send it's content
media-video/mjpg-streamer:input-http - Plugin that takes http-input
media-video/mjpg-streamer:input-ptp2 - Plugin that sends video stream from PTP2 compatible camera
media-video/mjpg-streamer:input-raspicam - Raspberry Pi camera support via the input_raspicam plugin
media-video/mjpg-streamer:input-testpicture - Plugin for sending compiled in, test pictures
media-video/mjpg-streamer:input-uvc - Plugin that sends video stream from UVC compatible camera
media-video/mjpg-streamer:output-autofocus - Auto focusing plugin
media-video/mjpg-streamer:output-file - Plugin that saves received content under given location
media-video/mjpg-streamer:output-http - Small HTTP server plugin which sends WWW directory content and streams image content
media-video/mjpg-streamer:output-rtsp - Plugin which provides a mechanism to take snapshots with a trigger from a UDP packet
media-video/mjpg-streamer:output-udp - Plugin receiving content over UDP and storing to a directory
media-video/mjpg-streamer:output-viewer - Plugin which allows to see output with viewer
media-video/mjpg-streamer:output-zmqserver - Plugin which provides zmqserver processing
media-video/mjpg-streamer:www - Installs WWW content
media-video/mjpg-streamer:wxp-compat - Enable camera WXP compatible format
media-video/motion:mariadb - Add mariadb database support
media-video/motion:mmal - Enables Multi-Media Abstraction Layer (MMAL) decoding support: Available e.g. on the Raspberry Pi.
media-video/motiontrack:multiprocess - Enables multi-process support (SMP/cluster) for motiontrack programs
media-video/mplayer:bl - Blinkenlights video output
media-video/mplayer:bluray - Enable playback of Blu-ray filesystems
media-video/mplayer:bs2b - Enable Bauer stereophonic-to-binaural headphone filter
media-video/mplayer:cdio - Use libcdio for CD support (instead of cdparanoia)
media-video/mplayer:cdparanoia - Enable cdparanoia (audio CD ripper) support
media-video/mplayer:cpudetection - Enables runtime CPU detection (useful for binpkgs, compatibility on other CPUs)
media-video/mplayer:dvdnav - Use forked libdvdnav, navigate menus in GUIs
media-video/mplayer:enca - Enables support for charset discovery and conversion
media-video/mplayer:faac - Use external faac library for AAC encoding
media-video/mplayer:faad - Use external faad library for AAC decoding
media-video/mplayer:libmpeg2 - Build support for mpeg2 over media-libs/libmpeg2 rather than using ffmpeg.
media-video/mplayer:live - Enables live.com streaming media support
media-video/mplayer:md5sum - Enables md5sum video output
media-video/mplayer:mng - MNG input support
media-video/mplayer:network - Enables network streaming support
media-video/mplayer:osdmenu - Enables support for on-screen display (OSD) menus
media-video/mplayer:pnm - Add PNM video output option, to create PPM/PGM/PGMYUV images
media-video/mplayer:pvr - Enable Video4Linux2 MPEG PVR
media-video/mplayer:radio - Enable V4L2 radio interface and support
media-video/mplayer:rar - Enable Unique RAR File Library
media-video/mplayer:rtc - Enables usage of the linux real time clock. The alternative is software emulation of rtc
media-video/mplayer:rtmp - Enables RTMPDump Streaming Media support
media-video/mplayer:shm - Enable support for shm
media-video/mplayer:tga - Enables Targa video output
media-video/mplayer:toolame - Enable toolame MPEG-2 encoding
media-video/mplayer:tremor - Enable internal support for Vorbis
media-video/mplayer:twolame - Enable twolame MPEG-2 encoding
media-video/mplayer:vcd - Enables VCD support
media-video/mplayer:vidix - Support for vidix video output
media-video/mplayer:yuv4mpeg - Enables yuv4mpeg video output
media-video/mplayer:zoran - Enables ZR360[56]7/ZR36060 video output
media-video/mpv:archive - Enable support for various archive formats via app-arch/libarchive
media-video/mpv:bluray - Enable playback of Blu-ray filesystems
media-video/mpv:cli - Enable the command-line player
media-video/mpv:drm - Enable Kernel Mode Setting / Direct Rendering Manager based video outputs
media-video/mpv:gamepad - Enable gamepad input support
media-video/mpv:libmpv - Enable the shared library and headers (used by frontends / plugins)
media-video/mpv:lua - Enable Lua scripting, OSC (On Screen Controller) GUI, and net-misc/yt-dlp support
media-video/mpv:opengl - Enable support for OpenGL-based video backends (Note: deprecated for X11, USE=egl provides the newer support for -gpu-api=opengl)
media-video/mpv:pipewire - Enable sound support via native PipeWire backend
media-video/mpv:rubberband - Enable high quality pitch correction via media-libs/rubberband
media-video/mpv:sdl - Enable media-libs/libsdl2 based video and audio outputs (Note: these outputs exist for compatibility reasons only, avoid if possible)
media-video/mpv:sixel - Enable support for the sixel video backend using media-libs/libsixel
media-video/mpv:sndio - Enable sound support via media-sound/sndio
media-video/mpv:soc - Use additional media-video/ffmpeg patches for efficient playback on some SoCs (e.g. ARM, RISC-V)
media-video/mpv:tools - Install extra tools: mpv_identify.sh, mpv_idet.sh, and umpv
media-video/mpv:uchardet - Enable subtitles charset discovery via app-i18n/uchardet
media-video/mpv:zimg - Enable libzimg support (for vf_fingerprint)
media-video/noad:libmpeg2 - Build support for mpeg2 through media-libs/libmpeg2 rather than using media-video/ffmpeg
media-video/obs-studio:browser - Enable browser source support via (precompiled) CEF.
media-video/obs-studio:decklink - Build the Decklink plugin.
media-video/obs-studio:fdk - Build with LibFDK AAC support.
media-video/obs-studio:mpegts - Enable native SRT/RIST mpegts output.
media-video/obs-studio:pipewire - Build with PipeWire support.
media-video/obs-studio:python - Build with scripting support for Python 3.
media-video/obs-studio:qsv - Build with Intel Quick Sync Video support.
media-video/obs-studio:sndio - Build with sndio support.
media-video/obs-studio:speex - Build with Speex noise suppression filter support.
media-video/obs-studio:test-input - Build and install input sources used for testing.
media-video/obs-studio:vlc - Build with VLC media source support.
media-video/obs-studio:websocket - Build with WebSocket API support.
media-video/peek:keybinder - Enable support for global hotkeys using dev-libs/keybinder
media-video/pipewire:X - Enable audible bell for X11
media-video/pipewire:echo-cancel - Enable WebRTC-based echo canceller via media-libs/webrtc-audio-processing
media-video/pipewire:extra - Build pw-cat/pw-play/pw-record
media-video/pipewire:flatpak - Enable Flatpak support
media-video/pipewire:gsettings - Use gsettings (dev-libs/glib) to read/save used modules (useful for e.g. media-sound/paprefs
media-video/pipewire:jack-client - Install a plugin for running PipeWire as a JACK client
media-video/pipewire:jack-sdk - Use PipeWire as JACK replacement
media-video/pipewire:liblc3 - Allow loading LC3 plugins via media-sound/liblc3
media-video/pipewire:lv2 - Allow loading LV2 plugins via media-libs/lv2
media-video/pipewire:modemmanager - Combined with USE=bluetooth, allows PipeWire to perform telephony on mobile devices.
media-video/pipewire:pipewire-alsa - Replace PulseAudio's ALSA plugin with PipeWire's plugin
media-video/pipewire:roc - Enable roc support for real-time audio streaming over the network, using media-libs/roc-toolkit. See https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Network#roc
media-video/pipewire:sound-server - Provide sound server using ALSA and bluetooth devices
media-video/pipewire:ssl - Enable raop-sink support (needs dev-libs/openssl)
media-video/pipewire:system-service - Install systemd unit files for running as a system service. Not recommended.
media-video/qmplay2:audiofilters - Build with AudioFilters module
media-video/qmplay2:avdevice - Build FFmpeg module with libavdevice suport
media-video/qmplay2:cdio - Build with AudioCD module
media-video/qmplay2:cuvid - Build with CUVID module
media-video/qmplay2:extensions - Build with Extensions module and enable other plugins
media-video/qmplay2:gme - Build Chiptune with GME support
media-video/qmplay2:inputs - Build with Inputs module
media-video/qmplay2:libass - Build with SSA/ASS subtitles rendering support
media-video/qmplay2:notifications - Build additional notifications module
media-video/qmplay2:pipewire - Build with PipeWire support
media-video/qmplay2:shaders - Compile Vulkan shaders using media-libs/shaderc
media-video/qmplay2:videofilters - Build with VideoFilters module
media-video/qmplay2:visualizations - Build with Visualizations module
media-video/rav1e:capi - Build the C-API library and header file
media-video/rtmpdump:gnutls - Use GnuTLS instead of OpenSSL for Cryptography
media-video/rtmpdump:ssl - Enable Cryptographic features
media-video/rtmpdump:tools - Enable installation of various binary tools in addition to librtmp library
media-video/simplescreenrecorder:asm - Enable x86 assembly optimisation.
media-video/simplescreenrecorder:vpx - Enable VP8 codec support via media-libs/libvpx.
media-video/totem:python - Build dev-lang/python using plugins (dbusservice for notifications and MPRIS control, interactive python console and opensubtitles lookup)
media-video/vdr:alternatechannel - Use alternate channel on record
media-video/vdr:bidi - fribidi support, for languages, written from right to left
media-video/vdr:demoplugins - Install demo and example plugins coming with vanilla vdr
media-video/vdr:graphtft - support for vdr-graphtft plugin up from version 0.1.7
media-video/vdr:html - Install HTML documentation
media-video/vdr:keyboard - enable keyboard support as remote device
media-video/vdr:mainmenuhooks - Allows to replace main menu entries by some special plugins (like epgsearch, extrecmenu, ...)
media-video/vdr:menuorg - Enables support for the media-plugins/vdr-menuorg
media-video/vdr:menuselection - adds support for menu hotkeys of double digits
media-video/vdr:naludump - Removes NALU fill data from h.264-Streams of TS files
media-video/vdr:permashift - permanent timeshift by recording live TV into RAM, need plugin media-plugins/vdr-permashift
media-video/vdr:pinplugin - Support for media-plugins/vdr-pin
media-video/vdr:resumereset - rreset resume of EOF
media-video/vdr:ttxtsubs - support for media-plugins/vdr-ttxtsubs
media-video/vdr:verbose - enable full output on compile
media-video/vidify:dbus - Support local MPRIS players
media-video/vidify:mpv - Use python-mpv as backend for vidify
media-video/vidify:vlc - Use python-vlc as backend for vidify
media-video/vidify:zeroconf - Use an external network player
media-video/vlc:X - Enable support for e.g. fullscreen mode via X and the X C-language binding. It does not build a graphical interface
media-video/vlc:aom - Enable AV1 encoding/decoding support using media-libs/libaom
media-video/vlc:archive - Enable support for libarchive stream extractor
media-video/vlc:aribsub - Enable support for decoding ARIB STD-B24 subtitles
media-video/vlc:bluray - Enable libbluray for Blu-ray disc support
media-video/vlc:chromaprint - Enable libchromaprint for Chromaprint based audio fingerprinter support
media-video/vlc:chromecast - Enable experimental support for Google Chromecast
media-video/vlc:dav1d - Enable support for media-libs/dav1d AV1 decoder
media-video/vlc:dc1394 - Enable IIDC cameras support
media-video/vlc:directx - Enable Win32 DirectX, D3D11va and DxVA2 support
media-video/vlc:dvbpsi - Enable support for Mpeg-TS files (.ts, .m2ts, .mts) via media-libs/libdvbpsi
media-video/vlc:encode - Enable streaming-output support and videolan manager to control multiple streams from within one instance
media-video/vlc:faad - Enable AAC audio decoding library support via media-libs/faad2
media-video/vlc:fdk - Enable the Fraunhofer AAC codec library
media-video/vlc:fluidsynth - Enable Fluidsynth MIDI software synthesis (with external sound fonts)
media-video/vlc:gcrypt - Enable cryptography support via libgcrypt
media-video/vlc:gme - Enable support for media-libs/game-music-emu for playing various video game music formats
media-video/vlc:gstreamer - Enable GStreamer based decoding support (currently supports only video decoding)
media-video/vlc:kate - Adds support for Ogg Kate subtitles via libkate
media-video/vlc:kms - Enable kernel mode setting video output plugin via x11-libs/libdrm
media-video/vlc:libplacebo - Enable support for GPU accelerated video rendering with media-libs/libplacebo
media-video/vlc:libtar - Uses libtar instead of the built-in tar reader for reading custom skins
media-video/vlc:libtiger - Enable Ogg Kate subtitles rendering using libtiger
media-video/vlc:linsys - Enable support for Linux Linear Systems Ltd. SDI and HD-SDI input cards
media-video/vlc:live - Enable live555 streaming media support (client support for rtsp)
media-video/vlc:loudness - Enable loudness normalisation according to the EBU R128 standard using media-libs/libebur128
media-video/vlc:lua - Enable Lua scripting support, needed for including support for Jamendo (online music platform) and similar things
media-video/vlc:macosx-notifications - Enable Mac OS X notifications module (formerly growl)
media-video/vlc:matroska - Enable matroska support using reference libraries (fallback on other existing matroska support if disabled, i.e., matroska enabled FFmpeg)
media-video/vlc:mpeg - Add libmpeg2 support for mpeg-1 and mpeg-2 video streams
media-video/vlc:nfs - Enable support for nfs protocol via net-fs/libnfs
media-video/vlc:omxil - Enable OpenMAX Integration Layer codec module
media-video/vlc:optimisememory - Enable optimisation for memory rather than performance
media-video/vlc:projectm - Enable the projectM visualization plugin
media-video/vlc:run-as-root - Allows vlc to start for root. Don't enable this unless you have a very specific (e.g. embedded) need for it!
media-video/vlc:sdl-image - Enable sdl image video decoder (depends on sdl)
media-video/vlc:sftp - Enable libssh2 to support SFTP file transfer
media-video/vlc:shout - Enable libshout output
media-video/vlc:skins - Enable support for the skins2 interface
media-video/vlc:soxr - Enable SoX Resampler support via media-libs/soxr
media-video/vlc:srt - Enable support for Secure Reliable Transport (SRT) via net-libs/srt
media-video/vlc:tremor - Enable tremor, a fixed-point version of the Ogg Vorbis decoder
media-video/vlc:twolame - Enable twolame support (MPEG Audio Layer 2 encoder)
media-video/vlc:upnp - Enable support for the Intel SDK stack based UPnP discovery module instead of CyberLink
media-video/vlc:vpx - Enable the decoder(s) from the WebM VP8 / VP9 Codec SDK
media-video/vlc:x265 - Support X265 Encoder
media-video/vlc:zeroconf - Enable support for zero-configuration networking via avahi
media-video/vlc:zvbi - Enable support for teletext subtitles via the zvbi library
media-video/webcamoid:headers - Install development headers
media-video/webcamoid:libuvc - Build with libuvc support
media-video/webcamoid:qtaudio - Enable audio capture/play via dev-qt/qtmultimedia
media-video/webcamoid:qtcamera - Enable video capture/play via dev-qt/qtmultimedia
media-video/webcamoid:v4lutils - Build with V4L-utils support
media-video/webcamoid:videoeffects - Build video effects
media-video/wireplumber:system-service - Install systemd unit files for running as a system service. Not recommended.
media-video/x264-encoder:avs - enable AvxSynth support in the AviSynth input module
media-video/x264-encoder:ffmpegsource - Enable ffmpegsource aka ffms support, disables lavf
media-video/x264-encoder:interlaced - Enable interlaced encoding support, this can decrease encoding speed by up to 2%
media-video/xine-ui:vdr - Enables Video Disk Recorder support
net-analyzer/2ping:server - Install the server init scripts.
net-analyzer/argus-clients:ft - Enable support for flow packets through net-analyzer/flow-tools
net-analyzer/barnyard:sguil - Enable sguil (The Analyst Console for Network Security Monitoring) support
net-analyzer/barnyard2:gre - Enable GRE support
net-analyzer/barnyard2:mpls - Enable support for mpls networks
net-analyzer/barnyard2:sguil - Enable sguil (The Analyst Console for Network Security Monitoring) support
net-analyzer/bwm-ng:csv - Enable csv output
net-analyzer/bwm-ng:html - Enable html output
net-analyzer/cacti:doc - install html documentation
net-analyzer/echoping:http - enable support for http protocol.
net-analyzer/echoping:icp - enable support for ICP (used to monitor proxies).
net-analyzer/echoping:priority - enable socket priority support.
net-analyzer/echoping:smtp - enable support for SMTP protocol.
net-analyzer/echoping:tos - enable support for TOS (TYpe Of Service).
net-analyzer/ettercap:plugins - Install ettercap plugins (et_*.so)
net-analyzer/flowgrind:pcap - Enable packet capturing support using net-libs/libpcap
net-analyzer/fprobe:messages - enable console messages
net-analyzer/goaccess:geoipv2 - Enable support for GeoIP2 through dev-libs/libmaxminddb
net-analyzer/goaccess:getline - Use GNU getline() to parse full line requests
net-analyzer/gr-fosphor:glfw - enable GLFW based interface
net-analyzer/greenbone-feed-sync:cron - Adds file to enable daily cron job to update Greenbone Community Feed's data"
net-analyzer/gvm:cli - Command Line Interface for OpenVAS Scanner
net-analyzer/gvm:gsa - Greenbone Security Assistant (WebUI)
net-analyzer/gvm:ospd - Enable support for scanner wrappers
net-analyzer/hexinject:experimental - Install experimental packets.tcl
net-analyzer/hexinject:tools - Install hex2raw and prettypacket tools
net-analyzer/httping:tfo - Enable support for TCP Fast Open
net-analyzer/hydra:gcrypt - Enable radmin2 support through dev-libs/libgcrypt
net-analyzer/hydra:libssh - Enable SSH support through net-libs/libssh
net-analyzer/hydra:mongodb - MongoDB support through dev-libs/mongo-c-driver
net-analyzer/icinga2:console - Adds support for line-editing in the console
net-analyzer/icinga2:jumbo-build - Combine source files to speed up build process, requires more memory
net-analyzer/icinga2:mail - Allows for mailing of alerts
net-analyzer/icinga2:mariadb - Enable support for the mariadb database backend
net-analyzer/icinga2:nano-syntax - Adds support for syntax used in the nano editor
net-analyzer/icinga2:plugins - Adds support for nagios plugins
net-analyzer/ipsumdump:nanotimestamp - Enable timestamps with nano-second resolution
net-analyzer/linkchecker:sqlite - Mozilla Bookmark parsing
net-analyzer/monitoring-plugins:dns - Install net-dns/bind-tools required for monitoring DNS servers. Disabling the flag does not remove any plugins.
net-analyzer/monitoring-plugins:fping - Install net-analyzer/fping required for fancy ping monitoring. Disabling the flag does not remove any plugins.
net-analyzer/monitoring-plugins:game - Install games-util/qstat required for monitoring FPS servers. Disabling the flag does not remove any plugins.
net-analyzer/monitoring-plugins:ipv6 - Enable ipv6 checks.
net-analyzer/monitoring-plugins:snmp - Install dev-perl/Net-SNMP and net-analyzer/net-snmp required for monitoring SNMP values. Disabling the flag does not remove any plugins.
net-analyzer/monitoring-plugins:ssh - Install net-misc/openssh required for monitoring SSH servers. Disabling the flag does not remove any plugins.
net-analyzer/mtr:ipinfo - Disable support for IP address lookups
net-analyzer/mtr:jansson - Enable JSON output support through dev-libs/jansson
net-analyzer/munin:asterisk - Install the packages required for monitoring Asterisk. Disabling the flag does not remove any plugin files.
net-analyzer/munin:cgi - Install the CGI-compatible scripts for on-the-fly generation of web pages and graphs. This is only meaningful if the minimal USE flag is disabled.
net-analyzer/munin:dhcpd - Install dev-perl/Net-IP, dev-perl/HTTP-Date and net-misc/dhcp to monitor DHCP lease usage. This only works if the server is on the same system as the node, so the server is also brought in. Disabling the flag does not remove any plugin file.
net-analyzer/munin:doc - Build and install a local copy of the HTML documentation for the whole software. This requires dev-python/sphinx to process the documentation sources.
net-analyzer/munin:http - Install dev-perl/libwww-perl required for monitoring HTTP-based services such as Apache and nginx. Disabling the flag does not remove any plugin file.
net-analyzer/munin:ipmi - Install sys-apps/ipmitool required for monitoring IPMI sensors. Disabling the flag does not remove any plugin file.
net-analyzer/munin:ipv6 - Add support for IPv6 in munin-node. IPv6 support for the master is always enabled, but the node requires a newer version of dev-perl/Net-Server, capable of listening to IPv6 sockets.
net-analyzer/munin:irc - Install the packages required for monitoring IRC. Disabling the flag does not remove any plugin files.
net-analyzer/munin:java - Build the Java-based plugins to monitor JMX-compatible applications. Disabling the flag removes the jmx monitoring plugins.
net-analyzer/munin:memcached - Install the packages required for memcached monitoring. Disabling the flag does not remove any plugin files.
net-analyzer/munin:minimal - Only install munin-node and its plugins. This excludes the scripts to generate the web pages and the graphs.
net-analyzer/munin:mysql - Install the packages required for monitoring MySQL. Disabling the flag does not remove any plugin files.
net-analyzer/munin:postgres - Install the packages required for monitoring PostgreSQL. Disabling the flag does not remove any plugin files.
net-analyzer/munin:syslog - Configure the node by default to log on syslog. This requires the presence of virtual/perl-Sys-Syslog. As of version 2.0.2, the master scripts only log to file, and not to syslog.
net-analyzer/nagios-core:classicui - use the classic web theme
net-analyzer/nagios-core:lighttpd - install www-servers/lighttpd config
net-analyzer/nagios-core:web - enable web interface
net-analyzer/nagios-plugin-check_raid:3ware - Support 3ware RAID controllers
net-analyzer/nagios-plugin-check_raid:aacraid - Support Adaptec AAC-RAID controllers
net-analyzer/nagios-plugin-check_raid:dmraid - Support Device-Mapper RAID
net-analyzer/nagios-plugin-check_raid:hpa - Support HP Array controllers
net-analyzer/nagios-plugin-check_raid:hpsa - Support HP SmartArray (CCISS) controllers
net-analyzer/nagios-plugin-check_raid:megaraid-sas - Support LSI MegaRAID SAS controllers
net-analyzer/nagios-plugin-check_raid:mpt - Support LSI MPT Fusion controllers
net-analyzer/nagios-plugin-check_raid:mpt-sas2 - Support LSI SAS-2 controllers
net-analyzer/nagios-plugins:ipv6 - Enable ipv6 checks.
net-analyzer/nagios-plugins:nagios-dns - Install net-dns/bind-tools required for monitoring DNS servers. Disabling the flag does not remove any plugin file.
net-analyzer/nagios-plugins:nagios-game - Install games-util/qstat required for monitoring FPS servers. Disabling the flag does not remove any plugin file.
net-analyzer/nagios-plugins:nagios-ping - Install net-analyzer/fping required for fancy ping monitoring. Disabling the flag does not remove any plugin file.
net-analyzer/nagios-plugins:snmp - Install dev-perl/Net-SNMP required for monitoring SNMP values. Disabling the flag does not remove any plugin file.
net-analyzer/nagios-plugins:ssh - Install net-misc/openssh required for monitoring SSH servers. Disabling the flag does not remove any plugin file.
net-analyzer/nagios-plugins-linux-madrisan:curl - Build check_container which requires net-misc/curl
net-analyzer/nagios-plugins-linux-madrisan:varlink - Build check_podman which requires dev-libs/libvarlink
net-analyzer/net-snmp:elf - Enable the use of elf utils to check uptime on some systems
net-analyzer/net-snmp:kmem - Enable usage of /dev/kmem
net-analyzer/net-snmp:mfd-rewrites - Use MFD rewrites of mib modules where available
net-analyzer/net-snmp:netlink - Use dev-libs/libnl to fetch TCP statistics instead of using /proc/net/tcp (Linux only).
net-analyzer/net-snmp:pcap - Install snmppcap which reads from PCAP files and writes to the SNMP transport
net-analyzer/net-snmp:pci - Use libpci (from sys-apps/pciutils) to look up network interface description. This feature is only available on Linux.
net-analyzer/net-snmp:pcre - Add support for Perl Compatible Regular Expressions in process table filtering.
net-analyzer/net-snmp:rpm - Enable monitoring of app-arch/rpm. This flag requires the bzip2 and zlib flags to be enabled as well.
net-analyzer/net-snmp:smux - Enable support for the legacy smux protocol (superseded by agentx)
net-analyzer/net-snmp:ucd-compat - Build UCD compatibility library. Increases significantly the install size.
net-analyzer/netdata:aclk - Enable Agent-Cloud Link (ACLK) for securely connecting a Netdata Agent to your web browser through Netdata Cloud
net-analyzer/netdata:bpf - Enable the extended Berkeley Packet Filter (eBPF) collector to monitor kernel-level metrics about applications with per-second granularity
net-analyzer/netdata:cloud - Enable Netdata Cloud support
net-analyzer/netdata:dbengine - Enable the Netdata database engine
net-analyzer/netdata:ipmi - Install sys-apps/ipmitool required for monitoring IPMI sensors.
net-analyzer/netdata:mongodb - Enable support for the mongodb backend
net-analyzer/netdata:nfacct - Enable the nfacct plugin
net-analyzer/netdata:nodejs - Enable use of nodejs (which some plugins use)
net-analyzer/netdata:prometheus - Enable support for the Prometheus remote write backend
net-analyzer/netdata:tor - Enable monitoring of tor
net-analyzer/netdata:xen - Enable monitoring of xen
net-analyzer/netperf:demo - Emit interim results during the run. May affect results
net-analyzer/nfdump:ftconv - Build the flow-tools to nfdump converter
net-analyzer/nfdump:jnat - Build nfudmp to support JunOS NAT event logging
net-analyzer/nfdump:nfpcapd - Build nfpcapd collector to create netflow data from precollected pcap traffic
net-analyzer/nfdump:nfprofile - Build nfprofile used by NfSen
net-analyzer/nfdump:nftrack - Build nfprofile used by PortTracker
net-analyzer/nfdump:nsel - Build nfudmp to support NSEL/NEL event data
net-analyzer/nfdump:readpcap - Build nfcapd collector to read from pcap file instead ofnetwork data
net-analyzer/nfdump:sflow - Build sflow collector sfcpad
net-analyzer/nmap:libssh2 - Enable SSH support through net-libs/libssh2
net-analyzer/nmap:ncat - Install the ncat utility
net-analyzer/nmap:ndiff - Install the ndiff utility
net-analyzer/nmap:nping - Install the nping utility
net-analyzer/nmap:nse - Include support for the Nmap Scripting Engine (NSE)
net-analyzer/nmap:symlink - Install symlink to nc
net-analyzer/nmap:zenmap - Install the GTK+ based nmap GUI, zenmap
net-analyzer/nrpe:command-args - Build support for specifying the command-line arguments from the Nagios/Icinga master. Make sure you understand the implications of this flag as it can be a security risk.
net-analyzer/nsca:crypt - Build support for crypted communication with nsca, through dev-libs/libmcrypt. It's recommended not to disable this flag unless all the communication will be handled in an absolutely safe environment.
net-analyzer/nsca:minimal - Only build and install the send_nsca command and not the daemon. This allows a very minimal install with no overhead when setting up a node.
net-analyzer/openvas-scanner:snmp - Build againts net-analyzer/net-snmp for "improved SNMP support"
net-analyzer/ospd-openvas:notus - Set systemd service file to use notus-scanner
net-analyzer/ossec-hids:agent - Build "agent" installation target (see package description)
net-analyzer/ossec-hids:hybrid - Build "hybrid" installation target
net-analyzer/ossec-hids:local - Build "local" installation target
net-analyzer/ossec-hids:server - Build "server" installation target
net-analyzer/pinger:gtk2 - Install the gtkpinger GUI utility based on x11-libs/gtk+:2
net-analyzer/pinger:gtk3 - Install the gtkpinger GUI utility based on x11-libs/gtk+:3
net-analyzer/pmacct:bgp-bins - Link BGP daemon binaries
net-analyzer/pmacct:bmp-bins - Link BMP daemon binaries
net-analyzer/pmacct:geoipv2 - Enable support for GeoIP2 through dev-libs/libmaxminddb
net-analyzer/pmacct:jansson - Enable support for JSON through dev-libs/jansson
net-analyzer/pmacct:kafka - Enable support for Apache Kafka through dev-libs/librdkafka
net-analyzer/pmacct:l2 - Enable Layer-2 features and support
net-analyzer/pmacct:ndpi - Enable support for nDPI through net-libs/nDPI
net-analyzer/pmacct:nflog - Enable support for NFLOG through uacctd
net-analyzer/pmacct:rabbitmq - Enable support for RabbitMQ through net-libs/rabbitmq-c
net-analyzer/pmacct:st-bins - Link Streaming Telemetry daemon binaries
net-analyzer/pmacct:traffic-bins - Link IPv4/IPv6 traffic accounting binaries
net-analyzer/pmacct:zmq - Enable support for ZeroMQ through net-libs/zeromq
net-analyzer/pnp4nagios:icinga - Build against net-analyzer/icinga2 instead of net-analyzer/nagios-core
net-analyzer/pnp4nagios:nagios - Build against net-analyzer/nagios-core (the default)
net-analyzer/rrdcollect:exec - Enable exec:/// support
net-analyzer/rrdcollect:librrd - Use the librrd library from net-analyzer/rrdtool
net-analyzer/rrdtool:graph - Enable support for graphing functions
net-analyzer/rrdtool:rados - Enable support for librados from sys-cluster/ceph
net-analyzer/rrdtool:rrdcached - Build support for write-caching daemon
net-analyzer/rrdtool:rrdcgi - Build rrdcgi support
net-analyzer/sancp:sguil - Enable sguil (The Analyst Console for Network Security Monitoring) support
net-analyzer/sarg:doublecheck - Make sarg double check the data it manipulates and output a warning if an error is found
net-analyzer/sarg:gd - Enable support for graphs in reports through media-libs/gd
net-analyzer/sarg:glob - Disable to ignore wildcards in file names
net-analyzer/sarg:pcre - Enable support for regular expressions in the hostalias file through dev-libs/libpcre
net-analyzer/scanlogd:nids - Use net-libs/libnids for packet capturing
net-analyzer/scanlogd:pcap - Use net-libs/libpcap for packet capturing
net-analyzer/sngrep:eep - Enable EEP packet send/receive support
net-analyzer/sngrep:gnutls - Use net-libs/gnutls to parse captured TLS packets
net-analyzer/snort:active-response - Enables support for automatically sending TCP resets and ICMP unreachable messages to terminate connections. Used with inline deployments.
net-analyzer/snort:control-socket - Enables Snort's control socket.
net-analyzer/snort:file-inspect - Enables extended file inspection capabilities.
net-analyzer/snort:flexresp3 - Enables support for new flexable response preprocessor for enabling connection tearing for inline deployments. Replaces flexresp and flexresp2.
net-analyzer/snort:gre - Enable support for inspecting and processing Generic Routing Encapsulation (GRE) packet headers. Only needed if you are monitoring GRE tunnels.
net-analyzer/snort:high-availability - Enables high-availability state sharing.
net-analyzer/snort:inline-init-failopen - Enables support to allow traffic to pass (fail-open) through inline deployments while snort is starting and not ready to begin inspecting traffic. If this option is not enabled, network traffic will not pass (fail-closed) until snort has fully started and is ready to perform packet inspection.
net-analyzer/snort:large-pcap-64bit - Allows Snort to read pcap files that are larger than 2 GB. ONLY VALID FOR 64bit SYSTEMS!
net-analyzer/snort:libtirpc - Build against net-libs/libtirpc for RPC support
net-analyzer/snort:linux-smp-stats - Enable accurate statistics reporting through /proc on systems with multiple processors.
net-analyzer/snort:non-ether-decoders - Enable decoding of non-ethernet protocols such as TokenRing, FDDI, IPX, etc.
net-analyzer/snort:open-appid - Enable OpenAppID, an open, application-focused detection language and processing module for Snort that enables users to create, share, and implement application detection. Requires dev-lang/luajit.
net-analyzer/snort:perfprofiling - Enables support for preprocessor and rule performance profiling using the perfmonitor preprocessor.
net-analyzer/snort:ppm - Enables support for setting per rule or per packet latency limits. Helps protect against introducing network latency with inline deployments.
net-analyzer/snort:react - Enables support for the react rule keyword. Supports interception, termination, and redirection of HTTP connections.
net-analyzer/snort:reload-error-restart - Enables support for completely restarting snort if an error is detected during a reload.
net-analyzer/snort:shared-rep - Enables the use of shared memory for the Reputation Preprocessor (Only available on Linux systems)
net-analyzer/snort:side-channel - Enables Snort's side channel.
net-analyzer/snort:sourcefire - Enables Sourcefire specific build options, which include --enable-perfprofiling and --enable-ppm.
net-analyzer/suricata:af-packet - Enable AF_PACKET support
net-analyzer/suricata:af-xdp - Enable AF_XDP support
net-analyzer/suricata:bpf - Enable support for eBPF (as well as XDP if supported by the kernel and the NIC driver) for low-level, high-speed packet processing
net-analyzer/suricata:control-socket - Enable unix socket
net-analyzer/suricata:detection - Enable detection modules
net-analyzer/suricata:hyperscan - Enable high-performance regex matching with Hyperscan
net-analyzer/suricata:lz4 - Enable support for compressed pcap logging using the LZ4 algorithm
net-analyzer/suricata:nflog - Enable libnetfilter_log support
net-analyzer/suricata:nfqueue - Enable NFQUEUE support for inline IDP
net-analyzer/suricata:redis - Enable Redis support
net-analyzer/symon:perl - Enables a generic perl symux client
net-analyzer/symon:symon - Enables the system monitor. Offers no functionality but monitoring and forwarding of measured data
net-analyzer/symon:symux - Enables the multiplexer which stores incoming symon streams on disk in RRD (net-analyzer/rrdtool) files
net-analyzer/tcpdump:drop-root - Drop privileges to pcap:pcap when run as root
net-analyzer/tcpdump:smi - Build with net-libs/libsmi to load MIBs on the fly to decode SNMP packets
net-analyzer/tcpreplay:pcapnav - Enable if you want the jump to byte offset feature via net-libs/libpcapnav
net-analyzer/tcpreplay:tcpdump - Use net-analyzer/tcpdump for packet decoding feature
net-analyzer/testssl:bundled-openssl - Install precompiled versions of OpenSSL for greater testing coverage
net-analyzer/tracebox:curl - Build the curl component for uploading capture files using net-misc/curl
net-analyzer/tracebox:sniffer - Build the sniffer component using net-libs/libnetfilter_queue
net-analyzer/wireshark:androiddump - Install androiddump, an extcap interface to capture from Android devices
net-analyzer/wireshark:bcg729 - Use media-libs/bcg729 for G.729 codec support in RTP Player
net-analyzer/wireshark:capinfos - Install capinfos, to print information about capture files
net-analyzer/wireshark:captype - Install captype, to print the file types of capture files
net-analyzer/wireshark:ciscodump - Install ciscodump, extcap interface to capture from a remote Cisco router
net-analyzer/wireshark:dftest - Install dftest, to display filter byte-code, for debugging dfilter routines
net-analyzer/wireshark:dpauxmon - Install dpauxmon, an external capture interface (extcap) that captures DisplayPort AUX channel data from linux kernel drivers
net-analyzer/wireshark:dumpcap - Install dumpcap, to dump network traffic from inside wireshark
net-analyzer/wireshark:editcap - Install editcap, to edit and/or translate the format of capture files
net-analyzer/wireshark:http3 - Install net-libs/nghttp3 for enhanced HTTP3 analysis
net-analyzer/wireshark:ilbc - Build with iLBC support in RTP Player using media-libs/libilbc
net-analyzer/wireshark:libxml2 - Use dev-libs/libxml2 for handling XML configuration in dissectors
net-analyzer/wireshark:maxminddb - Use dev-libs/libmaxminddb for IP address geolocation
net-analyzer/wireshark:mergecap - Install mergecap, to merge two or more capture files into one
net-analyzer/wireshark:minizip - Build with zip file compression support
net-analyzer/wireshark:netlink - Use dev-libs/libnl
net-analyzer/wireshark:pcap - Use net-libs/libpcap for network packet capturing (build dumpcap, rawshark)
net-analyzer/wireshark:plugins - Install plugins
net-analyzer/wireshark:qt6 - Build with Qt6 support instead of the default Qt5 for GUI support
net-analyzer/wireshark:randpkt - Install randpkt, a utility for creating pcap trace files full of random packets
net-analyzer/wireshark:randpktdump - Install randpktdump, an extcap interface to provide access to the random packet generator (randpkt)
net-analyzer/wireshark:reordercap - Install reordercap, to reorder input file by timestamp into output file
net-analyzer/wireshark:sbc - Use media-libs/sbc for playing back SBC encoded packets
net-analyzer/wireshark:sdjournal - Install sdjournal, an extcap that captures systemd journal entries
net-analyzer/wireshark:sharkd - Install sharkd, the daemon variant of wireshark
net-analyzer/wireshark:smi - Use net-libs/libsmi to resolve numeric OIDs into human readable format
net-analyzer/wireshark:spandsp - Use media-libs/spandsp for for G.722 and G.726 codec support in the RTP Player
net-analyzer/wireshark:sshdump - Install sshdump, an extcap interface to capture from a remote host through SSH
net-analyzer/wireshark:text2pcap - Install text2pcap, to generate a capture file from an ASCII hexdump of packets
net-analyzer/wireshark:tfshark - Install tfshark, a terminal-based version of the FileShark capability
net-analyzer/wireshark:tshark - Install tshark, to dump and analyzer network traffic from the command line
net-analyzer/wireshark:udpdump - Install udpdump, to get packets exported from a source (like a network device or a GSMTAP producer) that are dumped to a pcap file
net-analyzer/wireshark:wifi - Install wifidump, to dump and analyse 802.11 traffic
net-analyzer/zabbix:agent - Enable zabbix agent (for to-be-monitored machines)
net-analyzer/zabbix:agent2 - Enable go-based zabbix agent 2 (for to-be-monitored machines)
net-analyzer/zabbix:frontend - Enable zabbix web frontend
net-analyzer/zabbix:ipv6 - Turn on support of IPv6
net-analyzer/zabbix:java - Enable Zabbix Java JMX Management Gateway
net-analyzer/zabbix:libxml2 - Use libxml2 client library
net-analyzer/zabbix:odbc - Enable Database Monitor and use UnixODBC Library by default
net-analyzer/zabbix:openipmi - Enable openipmi things
net-analyzer/zabbix:openssl - Use dev-libs/openssl as TLS backend
net-analyzer/zabbix:proxy - Enable proxy support
net-analyzer/zabbix:server - Enable zabbix server
net-analyzer/zabbix:ssh - SSH v2 based checks
net-analyzer/zabbix:static - Build statically linked binaries
net-analyzer/zmap:mongo - Add support for storing in a mongo DB via dev-db/mongodb
net-analyzer/zmap:redis - Add support for storing in a redis DB via dev-libs/hiredis
net-dialup/accel-ppp:ipoe - Build IPoE kernel module
net-dialup/accel-ppp:libtomcrypt - Support crypto algorithms through dev-libs/libtomcrypt instead of dev-libs/openssl
net-dialup/accel-ppp:shaper - Support for traffic shaping
net-dialup/freeradius:memcached - Include dev-libs/libmemcached in caching drivers
net-dialup/freeradius:mongodb - Include support for MongoDB database
net-dialup/freeradius:redis - Include support for Redis database
net-dialup/freeradius-client:scp - Add service type hints derived from username prefix
net-dialup/freeradius-client:shadow - Enable shadow password support
net-dialup/mgetty:fax - Enables fax support
net-dialup/mgetty:fidonet - Enables FidoNet support
net-dialup/ppp:activefilter - Enables active filter support
net-dialup/ppp:gtk - Installs GTK+ password prompting program that can be used by passprompt.so PPP plugin for reading the password from a X11 input terminal
net-dialup/xl2tpd:kernel - Enable kernel interface for PPPoL2TP
net-dns/avahi:autoipd - Build and install the IPv4LL (RFC3927) network address configuration daemon
net-dns/avahi:bookmarks - Install the avahi-bookmarks application (requires dev-python/twisted)
net-dns/avahi:gtk - Use gtk3 for the avahi utilities to build the avahi-ui-gtk3 library
net-dns/avahi:howl-compat - Enable compat libraries for howl
net-dns/avahi:mdnsresponder-compat - Enable compat libraries for mDNSResponder
net-dns/bind:dlz - Enables dynamic loaded zones, 3rd party extension
net-dns/bind:dnsrps - Enable the DNS Response Policy Service (DNSRPS) API, a mechanism to allow an external response policy provider
net-dns/bind:dnstap - Enables dnstap packet logging
net-dns/bind:doh - Enables dns-over-https
net-dns/bind:fixed-rrset - Enables fixed rrset-order option
net-dns/bind:geoip2 - Enable GeoIP2 API from MaxMind
net-dns/bind:gssapi - Enable gssapi support
net-dns/bind:json - Enable JSON statistics channel
net-dns/bind:lmdb - Enable LMDB support to store configuration for 'addzone' zones
net-dns/bind-tools:gssapi - Enable gssapi support
net-dns/ddclient:examples - Install various example files, like for cron.
net-dns/djbdns:ipv6 - Apply Fefe's patch (https://www.fefe.de/dns/) for ipv6 support.
net-dns/dnsdist:bpf - Enable support for eBPF socket filtering
net-dns/dnsdist:dnscrypt - Enable the ability to act as a DNSCrypt server
net-dns/dnsdist:dnstap - Enable support for dnstap
net-dns/dnsdist:doh - Enable support for dns over http via net-libs/nghttp2
net-dns/dnsdist:doh3 - Enable support for dns over http3 via net-libs/quiche
net-dns/dnsdist:ipcipher - Enable support for ipcipher via dev-libs/openssl
net-dns/dnsdist:lmdb - Enable support for lmdb
net-dns/dnsdist:quic - Enable support for dns over quic via net-libs/quiche
net-dns/dnsdist:regex - Enable support for regular expression matching via dev-libs/re2
net-dns/dnsdist:remote-logging - Enable support for remote logging via dev-libs/protobuf
net-dns/dnsdist:ssl - Enable support for and encrypted client-server communication via dev-libs/libsodium
net-dns/dnsdist:web - Enable support for the web UI
net-dns/dnsdist:xdp - Enable support for AF_XDP high performance packet processing
net-dns/dnsmasq:auth-dns - Add support for acting as an authorative DNS server.
net-dns/dnsmasq:conntrack - Add support for Linux conntrack connection marking.
net-dns/dnsmasq:dhcp - Enable support for acting as a DHCP server.
net-dns/dnsmasq:dhcp-tools - Install extra command line tools for manually managing DHCP leases.
net-dns/dnsmasq:dnssec - Enable support DNSSEC validation and caching.
net-dns/dnsmasq:dumpfile - Include code to dump packets to a libpcap-format file for debugging
net-dns/dnsmasq:id - Whether report *.bind CHAOS info to clients, otherwise forward such requests upstream instead
net-dns/dnsmasq:libidn2 - Enable support for Internationalized Domain Names, via net-dns/libidn2 rather than net-dns/libidn
net-dns/dnsmasq:loop - Include functionality to probe for and remove DNS forwarding loops
net-dns/dnsmasq:nettlehash - Use hashing functions from dev-libs/nettle
net-dns/dnsmasq:script - Enable support for calling scripts when leases change.
net-dns/dnsmasq:tftp - Enables built in TFTP server for netbooting.
net-dns/dnssec-validator:dlv - Enable support for the DNSSEC look-aside validation
net-dns/dnssec-validator:nsec3 - Enable support for the NSEC3 Resource Record
net-dns/getdns:getdns-query - Add getdns_query tool
net-dns/getdns:getdns-server-mon - Add getdns_server_mon tool
net-dns/getdns:libev - Enable dev-libs/libev support
net-dns/getdns:libevent - Enable dev-libs/libevent support
net-dns/getdns:libuv - Enable dev-libs/libuv support
net-dns/getdns:stubby - Add Stubby DNS Privacy Deamon
net-dns/getdns:unbound - Enable net-dns/unbound libraries support
net-dns/hash-slinger:ipsec - Enable support for IPSECKEY records (ipseckey)
net-dns/hash-slinger:openpgp - Enable support for OPENPGPKEY records (openpgpkey)
net-dns/hash-slinger:ssh - Enable support for SSHFP records (sshfp)
net-dns/idnkit:liteonly - Compile and install lite library only
net-dns/inadyn:mbedtls - Use net-libs/mbedtls as tls provider.
net-dns/inadyn:openssl - Use dev-libs/openssl as tls provider.
net-dns/knot:cookies - Enable the DNS cookie module (RFC 7873)
net-dns/knot:dnsproxy - Enable the tiny DNS proxy module
net-dns/knot:dnstap - Include support for the dnstap binary log format (http://dnstap.info/)
net-dns/knot:doh - Enable DNS over HTTP (DoH) using libnghttp2
net-dns/knot:fastparser - Use a zone file parser that is faster, but requires more memory and CPU time to compile
net-dns/knot:geoip - Enable the Geography-based responses module
net-dns/knot:libidn2 - If IDN support is enabled, use net-dns/libidn2 instead of net-dns/libidn
net-dns/knot:noudp - Enable the module which can send empty truncated responses to UDP queries
net-dns/knot:onlinesign - Enable the module that sign zones on the fly instead of pre-signing zone
net-dns/knot:queryacl - Enable the module for query access control
net-dns/knot:quic - Enable the DNS over QUIC (DoQ) module using libngtcp2
net-dns/knot:rrl - Enable the response rate limiting module
net-dns/knot:stats - Enable the server statistics module
net-dns/knot:synthrecord - Enable the automatic forward/reverse records module
net-dns/knot:utils - Install Knot utilities, such as kdig, kzonecheck, ...
net-dns/knot:whoami - Enable the whoami response module
net-dns/knot:xdp - Enable eXpress Data Path
net-dns/knot-resolver:dnstap - Build dnstap binary logging module
net-dns/knot-resolver:kresc - Build (experimental) command-line client
net-dns/knot-resolver:nghttp2 - DNS-over-HTTPS support
net-dns/nsd:bind8-stats - Enables BIND8 like NSTATS and XSTATS and statistics in nsd-control
net-dns/nsd:default-znow - Enable full relocation binding at load-time (RELRO NOW, to protect GOT and .dtor areas)
net-dns/nsd:dnstap - Enable the structured binary log format
net-dns/nsd:ipv6 - Enable IPv6 support
net-dns/nsd:largefile - Enables support for large files
net-dns/nsd:libevent - Use libevent or libev, useful when zone count is high
net-dns/nsd:memclean - Cleanup memory (at exit) for eg. valgrind, memcheck
net-dns/nsd:minimal-responses - If minimal responses are disabled, responses are more likely to get truncated, resulting in TCP fallback
net-dns/nsd:mmap - Use mmap(2) instead of malloc(3); currently experimental
net-dns/nsd:munin - Install a plugin for net-analyzer/munin to graph statistical data from nsd
net-dns/nsd:nsec3 - Enable NSEC3 support
net-dns/nsd:packed - Enable packed structure alignment; uses less memory but has unaligned reads
net-dns/nsd:radix-tree - Use a radix tree for main lookups instead of a red-black tree
net-dns/nsd:ratelimit - Enables ratelimiting, based on query name, type and source
net-dns/nsd:recvmmsg - Enable recvmmsg and sendmmsg compilation, faster but some kernel versions may have implementation problems for IPv6
net-dns/nsd:simdzone - Leverage SIMD instructions in modern CPUs to improve throughput
net-dns/nsd:tfo - Enable TCP Fast Open
net-dns/nsd:year2038 - Enables support for 64-bit 'time_t' (sets D_TIME_BITS=64; glibc only)
net-dns/opendnssec:external-hsm - Enables support for storing DNSSEC keys through an arbitrary non-portage PKCS#11 interface, specified through an environment variable
net-dns/opendnssec:opensc - Enables support for storing DNSSEC keys through a dev-libs/opensc PKCS#11 interface
net-dns/opendnssec:signer - Enables signing capabilities for OpenDNSSEC
net-dns/opendnssec:softhsm - Enables support for storing DNSSEC keys in a dev-libs/softhsm PKCS#11 object
net-dns/pdns:lmdb - Use LMDB as backend.
net-dns/pdns:lua-records - Enable LUA records.
net-dns/pdns:remote - Use a generic socket or pipe as a backend (via JSON RPC requests).
net-dns/pdns:sodium - Use dev-libs/libsodium for cryptography
net-dns/pdns:tinydns - Use a TinyDNS CDB database as backend.
net-dns/pdns:tools - Build optional tools (dnsscan, dnsscope, etc..).
net-dns/pdns-recursor:dnstap - Enable support for dnstap
net-dns/pdns-recursor:sodium - Use dev-libs/libsodium for cryptography
net-dns/pdnsd:urandom - Linux-only: use /dev/urandom (pseudo-random number generation) instead of the default use of random() PRNG.
net-dns/rbldnsd:ipv6 - Support listening on ipv6 addresses and ipv6 database entries.
net-dns/resolvconf-symlink:symlink - Actually replace /etc/resolv.conf with a symlink. Without this flag, the ebuild is a no-op.
net-dns/unbound:dnscrypt - Enable DNSCrypt support
net-dns/unbound:dnstap - Enable dnstap support
net-dns/unbound:ecdsa - Enable ECDSA support
net-dns/unbound:ecs - Enable EDNS client subnet support
net-dns/unbound:gost - Enable GOST support
net-dns/unbound:http2 - Enable HTTP/2 support for DoHnet-libs/nghttp2
net-dns/unbound:redis - Enable cache db backend which usesdev-libs/hiredis
net-dns/unbound:tfo - Enable TCP Fast Open client+server
net-firewall/arno-iptables-firewall:plugins - Install optional plugins
net-firewall/arno-iptables-firewall:rsyslog - Install configuration snippet for app-admin/rsyslog
net-firewall/conntrack-tools:cthelper - Use net-libs/libnetfilter_cthelper for userspace conntrack helper support
net-firewall/conntrack-tools:cttimeout - Use net-libs/libnetfilter_cttimeout for conntrack timeout support
net-firewall/ebtables:perl - Install the ebtables-save script which uses perl
net-firewall/firehol:ipset - Use net-firewall/ipset.
net-firewall/firewalld:iptables - Add support for net-firewall/iptables as firewall backend
net-firewall/firewalld:nftables - Add support for net-firewall/nftables as firewall backend
net-firewall/fwknop:client - Build fwknop client
net-firewall/fwknop:extras - Install utility scripts and AppArmor policy for fwknopd
net-firewall/fwknop:firewalld - Use net-firewall/firewalld as the default server backend
net-firewall/fwknop:gdbm - Use sys-libs/gdbm to store fwknopd digest cache
net-firewall/fwknop:gpg - Enable GPG support via app-crypt/gpgme
net-firewall/fwknop:iptables - Use net-firewall/iptables as the default server backend
net-firewall/fwknop:nfqueue - Enable UDP-only NFQUEUE server mode (no net-libs/libpcap dependency)
net-firewall/fwknop:server - Build fwknopd server
net-firewall/fwknop:udp-server - Enable UDP-only server mode (no net-libs/libpcap dependency)
net-firewall/ipt_netflow:natevents - Netflow NAT translation events (NEL) support
net-firewall/iptables:conntrack - Build against net-libs/libnetfilter_conntrack when enables the connlabel matcher
net-firewall/iptables:netlink - Build against libnfnetlink which enables the nfnl_osf util
net-firewall/iptables:nftables - Support nftables kernel interface
net-firewall/iptables:pcap - Build against net-libs/libpcap which enables the nfbpf_compile util
net-firewall/nftables:doc - Create man pages for the package (requires app-text/asciidoc)
net-firewall/nftables:json - Enable JSON support via dev-libs/jansson
net-firewall/nftables:xtables - Add libxtables support to try to automatically translate rules added by iptables-compat
net-firewall/pglinux:cron - Install cron script
net-firewall/shorewall:init - Adds the capability to place the firewall in a safe state prior to bringing up the network interfaces
net-firewall/shorewall:ipv4 - Installs everything needed to create a full IPv4 firewall
net-firewall/shorewall:ipv6 - Adds the capability to create a full IPv6 firewall (requires net-firewall/shorewall ipv4 USE flag)
net-firewall/shorewall:lite4 - Installs everything needed to just *run* an IPv4 compiled firewall script created with net-firewall/shorewall ipv4 USE flag
net-firewall/shorewall:lite6 - Installs everything needed to just *run* an IPv6 compiled firewall script created with net-firewall/shorewall ipv6 USE flag
net-firewall/ufw:examples - Example ufw config files
net-firewall/ufw:ipv6 - IPv6 support for iptables
net-fs/autofs:dmalloc - Enable debugging with the dmalloc library
net-fs/autofs:ldap - Install LDAP module
net-fs/autofs:libtirpc - Use TiRPC library instead of SunRPC
net-fs/autofs:mount-locking - Enable locking to prevent corruption of /etc/mtab in the presence of concurrent auto-mounting. If enabled, recursive auto-mounting (eg. using autofs to bind or loop mount a filesystem which is itself auto-mounted) is not possible.
net-fs/autofs:sasl - Enable SASL support in the LDAP module
net-fs/cifs-utils:ads - Enable Active Directory support and create cifs.idmap binary - idmap support
net-fs/cifs-utils:caps - Enable sys-libs/libcap-ng support
net-fs/cifs-utils:creds - cifs credentials support
net-fs/cifs-utils:python - Enable support for python and install python tools
net-fs/cvmfs:server - Install the cvmfsd program and init script
net-fs/libnfs:utils - Build/install nfs-{cat,ls,cp} utils
net-fs/netatalk:pgp - Add support pgp authentication module
net-fs/netatalk:quota - Add support for user quota on various filesystems
net-fs/netatalk:shadow - Add shadow support
net-fs/netatalk:ssl - Use dev-libs/openssl to provide DHX User Access Modules. These are not used with most recent versions of OS X and can be kept disabled without risks.
net-fs/netatalk:tracker - Add support for spotlight like tracker
net-fs/nfs-utils:junction - Enable NFS junction support in nfsref
net-fs/nfs-utils:ldap - Add ldap support
net-fs/nfs-utils:libmount - Link mount.nfs with libmount
net-fs/nfs-utils:nfsv3 - Enable support for NFSv2 and NFSv3
net-fs/nfs-utils:nfsv4 - Enable support for NFSv4 (includes NFSv4.1 and NFSv4.2)
net-fs/nfs-utils:uuid - Support UUID lookups in rpc.mountd
net-fs/openafs:apidoc - Build API documentation using app-text/doxygen. May take a *long* time to build.
net-fs/openafs:bitmap-later - Enable fast startup of file server by not reading bitmap till needed.
net-fs/openafs:fuse - Build fuse client.
net-fs/openafs:kauth - Install the DEPRECATED kauth server, PAM modules, and utilities
net-fs/openafs:modules - Build libafs kernel module. Disable only if you know what you're doing: without this module OpenAFS client will not work.
net-fs/openafs:namei - Enable namei fileserver instead of inode fileserver. You should disable this option only if compatibility with inode format AFS storage is required.
net-fs/openafs:pthreaded-ubik - Enable installation of pthreaded ubik applications.
net-fs/openafs:supergroups - Enable support for nested pts groups.
net-fs/openafs:tsm - Enable use of the Tivoli TSM API libraries from app-backup/tsm for butc support. AMD64 only.
net-fs/openafs:ubik-read-while-write - Enable vlserver read from db cache during write locks (EXPERIMENTAL)
net-fs/s3backer:nbd - Support export as an nbd device
net-fs/s3fs:gnutls - Enable net-libs/gnutls crypto backend
net-fs/s3fs:nettle - Use dev-libs/nettle network functions with GnuTLS.
net-fs/s3fs:nss - Enable dev-libs/nss crypto backend
net-fs/samba:addc - Enable Active Directory Domain Controller support
net-fs/samba:ads - Enable Active Directory support
net-fs/samba:ceph - Enable support for Ceph distributed filesystem via sys-cluster/ceph
net-fs/samba:client - Enables the client part
net-fs/samba:cluster - Enable support for clustering
net-fs/samba:glusterfs - Enable support for Glusterfs filesystem via sys-cluster/glusterfs
net-fs/samba:gpg - Use app-crypt/gpgme for AD DC
net-fs/samba:iprint - Enabling iPrint technology by Novell
net-fs/samba:json - Enable json audit support through dev-libs/jansson
net-fs/samba:lmdb - Enable LMDB backend for bundled ldb
net-fs/samba:profiling-data - Enables support for collecting profiling data
net-fs/samba:quota - Enables support for user quotas
net-fs/samba:regedit - Enable support for regedit command-line tool
net-fs/samba:snapper - Enable vfs_snapper module (requires sys-apps/dbus)
net-fs/samba:spotlight - Enable support for spotlight backend
net-fs/samba:system-heimdal - Use app-crypt/heimdal instead of bundled heimdal.
net-fs/samba:system-mitkrb5 - Use app-crypt/mit-krb5 instead of app-crypt/heimdal.
net-fs/samba:unwind - Enable libunwind usage for backtraces
net-fs/samba:winbind - Enables support for the winbind auth daemon
net-ftp/frox:transparent - Enable transparent proxying of data connections
net-ftp/ftpbase:zeroconf - Enable support for zero-configuration networking via Avahi.
net-ftp/lftp:convert-mozilla-cookies - Install the convert-mozilla-cookies script and its run-time dependencies
net-ftp/lftp:verify-file - Install the verify-file script and its run-time dependencies
net-ftp/proftpd:authfile - Enable support for the auth-file module
net-ftp/proftpd:ban - Enable support for the mod_ban module
net-ftp/proftpd:case - Enable support for the mod_case module
net-ftp/proftpd:copy - Enable support for the mod_copy module
net-ftp/proftpd:ctrls - Enable support for the mod_ctrls and mod_ctrls_admin modules
net-ftp/proftpd:deflate - Enable support for the mod_deflate module
net-ftp/proftpd:diskuse - Enable support for the mod_diskuse module
net-ftp/proftpd:dso - Enable support for the mod_dso module
net-ftp/proftpd:dynmasq - Enable support for the mod_dynmasq module, for dynamically updating MasqueradeAddress for dyndns-like scenarios)
net-ftp/proftpd:exec - Enable support for the mod_exec module. WARNING: this could be a security risk
net-ftp/proftpd:ident - Enable support for the mod_ident module
net-ftp/proftpd:ifsession - Enable support for the ifsession module
net-ftp/proftpd:ifversion - Enable support for the mod_ifversion module
net-ftp/proftpd:log-forensic - Enable support for the mod_log_forensic module, log only suspicious actions.
net-ftp/proftpd:memcache - Enable support for the mod_memcache module, for using memcached servers
net-ftp/proftpd:msg - Enable support for the mod_msg module, allows system users to send messages to connected clients via the ftpdctl program.
net-ftp/proftpd:qos - Enable support for the mod_qos module
net-ftp/proftpd:ratio - Enable support for the mod_ratio module
net-ftp/proftpd:readme - Enable support for the mod_readme module
net-ftp/proftpd:rewrite - Enable support for the rewrite module
net-ftp/proftpd:sftp - Enable support for the mod_sftp module and optionally mod_sftp_sql and mod_sftp_pam if matching USE flags are enabled
net-ftp/proftpd:shaper - Enable support for the mod_shaper module
net-ftp/proftpd:sitemisc - Enable support for the sitemisc module
net-ftp/proftpd:sodium - Use dev-libs/libsodium for password encryption an key exchange
net-ftp/proftpd:softquota - Enable support for the quotatab module
net-ftp/proftpd:unique-id - Enable support for the mod_unique_id module, every connection gets unique ID.
net-ftp/proftpd:vroot - Enable support for the virtual root module
net-ftp/pure-ftpd:anondel - Permit anonymous to delete files
net-ftp/pure-ftpd:anonperm - Permit anonymous to change file permissions
net-ftp/pure-ftpd:anonren - Permit anonymous to rename files
net-ftp/pure-ftpd:anonres - Permit anonymous to resume file transfers
net-ftp/pure-ftpd:implicittls - Enable TLS on Port 990
net-ftp/pure-ftpd:noiplog - Disables logging of IP addresses
net-ftp/pure-ftpd:paranoidmsg - Display paranoid messages instead of normal ones
net-ftp/pure-ftpd:resolveids - Resolve UIDs/GIDs
net-ftp/pure-ftpd:sysquota - Enables system quota support (needs sys-fs/quota)
net-ftp/pure-ftpd:vchroot - Enable support for virtual chroot (possible security risk)
net-ftp/tftp-hpa:client - Compile and install the tftp client
net-ftp/tftp-hpa:server - Compile and install the tftp server
net-ftp/yafc:ssh - Build with SFTP support
net-im/biboumi:udns - Asynchronously resolve domain names using net-libs/udns
net-im/bitlbee:libevent - Use libevent for event handling
net-im/bitlbee:nss - Prefer dev-libs/nss as SSL/TLS provider
net-im/bitlbee:otr - Enable support for encrypted conversations
net-im/bitlbee:plugins - Enable support for plugins
net-im/bitlbee:purple - Use libpurple instead of the built-in IM protocol support
net-im/bitlbee:twitter - Enable Twitter protocol support
net-im/coturn:mongodb - Enable support for the mongodb database
net-im/coturn:redis - Enable support for the redis database
net-im/dino:gpg - Enable OpenPGP encryption plugin
net-im/dino:http - Enable HTTP file upload plugin
net-im/dino:notification-sound - notification sounds plugin
net-im/dino:omemo - Enable OMEMO encryption plugin
net-im/dino:rtp - Enable Audio/Video calls over XMPP using RTP
net-im/ejabberd:captcha - Support for CAPTCHA Forms (XEP-158) on registration
net-im/ejabberd:full-xml - Use XML features in XMPP stream (ex: CDATA), requires XML compliant clients
net-im/ejabberd:mssql - Enable Microsoft SQL Server support (via ODBC) for data storage
net-im/ejabberd:mysql - Enable MySQL support for data storage
net-im/ejabberd:odbc - Enable ODBC support to access data storage
net-im/ejabberd:postgres - Enable PostgreSQL support for data storage
net-im/ejabberd:redis - Enable Redis support for transient data
net-im/ejabberd:roster-gw - Turn on workaround for processing gateway subscriptions
net-im/ejabberd:sip - Enable SIP support
net-im/ejabberd:sqlite - Enable SQLite database support
net-im/ejabberd:stun - Enable STUN/TURN support
net-im/ejabberd:zlib - Enable Stream Compression (XEP-0138) using zlib
net-im/err:irc - Pull optional dependencies, needed for IRC backend
net-im/gajim:crypt - End to end encryption and GPG encryption
net-im/gajim:geolocation - Sharing your location
net-im/gajim:jingle - Audio and video calls
net-im/gajim:omemo - Install dependencies for OMEMO encryption plugin
net-im/gajim:remote - Controling Gajim instance from command line with gajim-remote
net-im/gajim:rst - Generating XHTML output from RST code
net-im/gajim:spell - Spellchecking of composed messages
net-im/gajim:upnp - Ability to request your router to forward port for file transfer
net-im/gajim:webp - Support WebP avatars
net-im/libcommuni:qml - Install optional qml files.
net-im/libcommuni:uchardet - Use app-i18n/uchardet, which is upstreams default, instead of dev-libs/icu, which makes impossible to run tests.
net-im/pidgin:gadu - Enable Gadu Gadu protocol support
net-im/pidgin:groupwise - Enable Novell Groupwise protocol support
net-im/pidgin:gstreamer - Enables voice and video sessions
net-im/pidgin:gtk - Builds Pidgin, the GTK+ interface
net-im/pidgin:meanwhile - Enable meanwhile support for Sametime protocol
net-im/pidgin:ncurses - Build finch, console interface
net-im/pidgin:prediction - Enable Contact Availability Prediction plugin
net-im/pidgin:python - Build libgnt (GLib Ncurses Toolkit used by finch) with python scripting support
net-im/pidgin:xscreensaver - Use X screensaver protocol extension to monitor idle/active status based on mouse/keyboard events
net-im/pidgin:zephyr - Enable Zephyr protocol support
net-im/profanity:gpg - Enable OpenPGP encryption
net-im/profanity:omemo - Enable OMEMO encryption
net-im/profanity:omemo-qrcode - Enable exchanging OMEMO information via QR code
net-im/profanity:otr - Enable encrypted conversations using Off-The-Records messaging
net-im/profanity:python - Enable Python plugins support
net-im/prosody:libevent - Use libevent for event handling
net-im/psi:aspell - Enable spellchecking using app-text/aspell
net-im/psi:enchant - Enable spellchecking using app-text/enchant
net-im/psi:extras - Enable Psi+ patchset
net-im/psi:hunspell - Enable spellchecking using app-text/hunspell
net-im/psi:iconsets - Install additional iconsets, some of them have no clear licensing
net-im/psi:webengine - Enable themed, html-based chatlogs using dev-qt/qtwebengine
net-im/psi:whiteboarding - Enable experimental interactive SVG drawing
net-im/psi:xscreensaver - Use X screensaver protocol extension to monitor idle/active status based on mouse/keyboard events
net-im/psimedia:extras - Enable Psi+ mode (required when built for Psi+)
net-im/qtox:X - Enable auto-away support
net-im/qtox:spellcheck - Enable spell checking support
net-im/spectrum2:frotz - Enables the Z-Engine backend.
net-im/spectrum2:irc - Enables the IRC backend, based on net-im/libcommuni.
net-im/spectrum2:purple - Enables the libpurple backend, based on net-im/pidgin.
net-im/spectrum2:sms - Enables the SMS backend, based on app-mobilephone/smstools.
net-im/spectrum2:twitter - Enables the Twitter backend.
net-im/spectrum2:whatsapp - Enables the WhatsApp backend, based on net-im/transwhat.
net-im/telegram-desktop:enchant - Use the app-text/enchant spell-checking backend instead of app-text/hunspell
net-im/telegram-desktop:fonts - Use builtin patched copy of open-sans fonts (overrides fontconfig)
net-im/telegram-desktop:libdispatch - Use dev-libs/libdispatch to speed up concurrent code execution
net-im/telegram-desktop:qt6 - Build with Qt6 support
net-im/telegram-desktop:qt6-imageformats - Add support for HEIF, AVIF and JpegXL by bundling kde-frameworks/kimageformats
net-im/tkabber:plugins - Enables installation the extra plugins
net-im/tokodon:mpv - Use media-libs/mpvqt instead of dev-qt/qtmultimedia for video playback (default)
net-im/tokodon:webengine - Use dev-qt/qtwebengine for built-in authentication page (default is external browser)
net-im/toxic:audio-notify - Enables native sound notifications
net-im/toxic:experimental - Use experimental features in net-libs/tox
net-im/toxic:games - Enables some small mini-games
net-im/toxic:llvm - Enables support for LLVM Address Sanitizer
net-im/toxic:notification - Enables desktop notifications with libnotify, with sound support.
net-im/toxic:qrcode - Enables QR code support
net-im/toxic:sound - Enables audio calling
net-im/toxic:video - Enables video calling
net-im/zoom:bundled-qt - Use bundled Qt and icu instead of system-wide libs
net-im/zoom:opencl - Use OpenCL for virtual background support (virtual/opencl)
net-im/zoom:zoom-symlink - Install a zoom symlink in /usr/bin
net-irc/anope:ldap - Build LDAP modules for e.g. opertypes
net-irc/anope:sql - Build modules which require SQL
net-irc/anope:ssl - Provide SSL services using OpenSSL
net-irc/anope:tre - Use dev-libs/tre for regular expressions
net-irc/atheme-services:cracklib - Enable nickserv/cracklib module for enforcing strong account passwords
net-irc/atheme-services:largenet - Enable support/tweaks for large networks
net-irc/atheme-services:ldap - Enable ldap-backed authentication module
net-irc/atheme-services:perl - Install a perl module which wraps around the services' XML-RPC interface
net-irc/epic5:archive - Use app-arch/libarchive to use zip and tar archives from scripts.
net-irc/hexchat:libcanberra - Enable sound event support using media-libs/libcanberra
net-irc/hexchat:plugin-checksum - Build Checksum plugin (needs plugins)
net-irc/hexchat:plugin-fishlim - Build FiSHLiM plugin (needs plugins )
net-irc/hexchat:plugin-sysinfo - Build SysInfo plugin (needs plugins)
net-irc/hexchat:theme-manager - Build the theme manager (mono)
net-irc/inspircd:argon2 - Enable Argon2 hashes in modules
net-irc/inspircd:gnutls - Enable TLS support
net-irc/inspircd:ldap - Enable LDAP support
net-irc/inspircd:log-json - Enable logging via JSON
net-irc/inspircd:maxminddb - Add support for geolocation using libMaxMindDB
net-irc/inspircd:mbedtls - Add support for TLS using the mbedTLS library
net-irc/inspircd:mysql - Enable MySQL database backend
net-irc/inspircd:pcre2 - Add support for Perl Compatible Regular Expressions 2
net-irc/inspircd:postgres - Enable PostgreSQL database backend
net-irc/inspircd:re2 - Add support for Google RE2 regular expressions library
net-irc/inspircd:regex-posix - Add support for POSIX Regular Expressions
net-irc/inspircd:regex-stdlib - Add support for C++ stdlib regular expressions
net-irc/inspircd:sqlite - Enable Sqlite database backend
net-irc/inspircd:ssl - Enable SSL support
net-irc/inspircd:sslrehashsignal - Enable rehashing SSL module by SIGUSR1
net-irc/inspircd:tre - Enable support for TRE, a lightweight, robust, and efficient POSIX compliant regexp matching library
net-irc/iroffer-dinoex:admin - Compile with HTTP Admin
net-irc/iroffer-dinoex:blowfish - Compile with blowfish encryption support
net-irc/iroffer-dinoex:chroot - Compile with chroot support
net-irc/iroffer-dinoex:http - Compile with HTTP server support
net-irc/iroffer-dinoex:memsave - Compile with memory protection
net-irc/iroffer-dinoex:telnet - Compile with Telnet server support
net-irc/irssi:otr - Adds support for a loadable IRC otr module
net-irc/irssi:proxy - Adds support for a loadable IRC proxy module
net-irc/kvirc:dcc-video - Support video connections over DCC protocol
net-irc/kvirc:phonon - Support Phonon for audio output
net-irc/kvirc:webengine - Support Qt WebEngine
net-irc/limnoria:crypt - Enables user authentication with GPG
net-irc/ngircd:ident - Enables support for net-libs/libident
net-irc/ngircd:irc-plus - Enables support for the IRC+ protocol (needs virtual/libiconv)
net-irc/ngircd:strict-rfc - Strict RFC compliance; may harm compatibility
net-irc/psybnc:multinetwork - Adds support for multiple networks
net-irc/psybnc:oidentd - Adds support for oidentd
net-irc/psybnc:scripting - Adds scripting support
net-irc/quassel:bundled-icons - Use icon themes bundled with Quassel, rather than depending on system packages.
net-irc/quassel:crypt - Support core->network per-channel and per-query blowfish encryption via app-crypt/qca SLOT 2.
net-irc/quassel:dbus - Support desktop notifications via the StatusNotifier D-Bus service (used by most modern desktop environments).
net-irc/quassel:gui - Build the Qt5 GUI client for quassel. If this USE flag is disabled, the GUI is not built, and cannot be used. You might want to disable this on the server, but you need it enabled on the client.
net-irc/quassel:monolithic - Build standalone client with integrated core, no external quasselcore needed. Only useful if you don't want to use Quassel's client/server model. The server and X flags are not needed in this case but it is possible to enable them too.
net-irc/quassel:oxygen - Support the Oxygen icon set that was the default for KDE4.
net-irc/quassel:server - Build the server binary. If this USE flag is disabled, the 'core' server binary for quassel is not built, and cannot be used. You need this enabled on the server, but you might want to disable it on the client.
net-irc/quassel:urlpreview - Use QtWebEngine rendering engine for showing URL thumbnails.
net-irc/rbot:aspell - Use aspell instead of ispell in the "spell" plugin for rbot. The vanilla plugin uses ispell, but enabling this flag makes it use the ispell interface from aspell instead.
net-irc/rbot:cal - Add dependency over a package providing the /usr/bin/cal command, which is needed to enable the "cal" plugin for rbot. If the USE flag is disabled the plugin is also disabled by default.
net-irc/rbot:figlet - Add dependency over app-misc/figlet, which is used by the "figlet" plugin for rbot. If the USE flag is disabled the plugin will be unable to use figlet; if toilet is also disabled, the plugin will be disabled.
net-irc/rbot:fortune - Add dependency over games-misc/fortune-mod, which is needed to enable the "fortune" plugin for rbot. If the USE flag is disabled the plugin is also disabled by default.
net-irc/rbot:host - Add dependency over net-dns/bind-tools (providing /usr/bin/host), which is needed to enable the "host" plugin for rbot. If the USE flag is disabled the plugin is also disabled by default.
net-irc/rbot:nls - Build and install translation for the messages coming from the bot and its plugins (through dev-ruby/ruby-gettext).
net-irc/rbot:timezone - Add dependency over dev-ruby/tzinfo to enable the "time" plugin for rbot. If the USE flag is disabled the plugin is also disabled by default.
net-irc/rbot:toilet - Add dependency over app-misc/toilet, which is used by the "figlet" plugin for rbot. If the USE flag is disabled the plugin will be unable to use toilet; if figlet is also disabled, the plugin will be disabled.
net-irc/rbot:translator - Add dependency over dev-ruby/mechanize, which is needed to enable the "translator" plugin for rbot. If the USE flag is disabled the plugin is also disabled by default.
net-irc/soju:moderncsqlite - Use moderncsqlite, a cgo-free port of SQLite
net-irc/unrealircd:class-nofakelag - Enable an unsupported class::options flag called “nofakelag” allowing you to grant fakelag exemption to normal user (instead of just opers).
net-irc/unrealircd:operoverride - Enable OperOverride extension
net-irc/unrealircd:operoverride-verify - Enable requiring opers to invite themselves to +s/+p channels
net-irc/unrealircd:prefixaq - Enable chanadmin and chanowner prefixes
net-irc/unrealircd:showlistmodes - Display channel modes in /LIST (only configured at compiletime)
net-irc/weechat:alias - Enable plugin for alias control
net-irc/weechat:buflist - Enable buflist plugin
net-irc/weechat:charset - Enable encoding conversions
net-irc/weechat:enchant - Enable spell checker plugin via Enchant instead of GNU Aspell
net-irc/weechat:exec - Enable exec plugin
net-irc/weechat:fifo - Enable FIFO support (sh pipes)
net-irc/weechat:fset - Enable fast set plugin
net-irc/weechat:irc - Enable IRC protocol support
net-irc/weechat:logger - Enable support for logging
net-irc/weechat:relay - Enable relay plugin (experimental)
net-irc/weechat:relay-api - Enable json API support for the relay plugin (experimental)
net-irc/weechat:scripts - Build infrastructure for scripting
net-irc/weechat:trigger - Enable trigger plugin
net-irc/weechat:typing - Enable typing plugin
net-irc/weechat:xfer - Enable xfer plugin support
net-irc/znc:argon2 - Store password hashes using Argon2id instead of SHA-256
net-irc/znc:zlib - Enable mod_deflate-like gzip support for znc's web interface using sys-libs/zlib.
net-libs/aqbanking:ebics - Enable support for Electronic Banking Internet Communication Standard (EBICS)
net-libs/axtls:cgi-lua - Enables lua backed cgi for axhttpd server
net-libs/axtls:cgi-php - Enables php backed cgi for axhttpd server
net-libs/axtls:httpd - Enables axhttpd web server component
net-libs/axtls:static - Statically build axhttpd server
net-libs/c-client:chappa - Enable Eduardo Chappa's patches for use with mail-client/alpine (mainly adds support for maildir)
net-libs/c-client:doc - Install RFCs related to IMAP
net-libs/c-client:topal - Enable support for net-mail/topal for use with mail-client/alpine
net-libs/canlock:header-parser - Build article header parsers
net-libs/canlock:legacy - Build legacy API (v2 compatible)
net-libs/cvm:vpopmail - Enable vpopmail support
net-libs/czmq:drafts - Build draft API, which may change at any time without any notice, and is therefore not recommended for normal use. (requires draft support in net-libs/zeromq as well)
net-libs/czmq:http-client - Build support for HTTP client using net-misc/curl
net-libs/czmq:http-server - Build support for HTTP server using net-libs/libmicrohttpd
net-libs/czmq:nss - Use dev-libs/nss for SHA instead of an internal implementation
net-libs/czmq:uuid - Enable UUID support using sys-apps/util-linux
net-libs/daq:afpacket - Build the AFPacket data acquisition module. Functions similar to the PCAP module but with better performance. Snort can run unprivileged when using this module. AFpacket supports both inline and passive modes.
net-libs/daq:dump - Build the Dump data acquisition module. The dump DAQ allows you to test the various inline mode features available in 2.9 Snort like injection and normalization.
net-libs/daq:ipq - Build the IPQ data acquisition module. IPQ is the old way to process iptables packets for inline deployments. Snort can not run unprivileged when using this module.
net-libs/daq:nfq - Build the NFQ data acquisition module. NFQ is the new way to process iptables packets for inline deployments. Snort can not run unprivileged when using this module.
net-libs/daq:pcap - Build the PCAP data acquisition module.
net-libs/davix:tools - Install additional tools
net-libs/freaklabs-chibiarduino:promisc - Enable promisc in the config file for packet sniffing
net-libs/glib-networking:gnome - Extract HTTP/HTTPS/SOCKS proxy configuration stored using GSettings
net-libs/glib-networking:libproxy - Use net-libs/libproxy for getting the HTTP/HTTPS/SOCKS proxy configuration
net-libs/gloox:xhtmlim - expose internal NodeList for optional XHTML-IM rendering without external parser
net-libs/gnome-online-accounts:gnome - Use gnome-base/gnome-control-center to set GNOME online accounts preferences
net-libs/gnome-online-accounts:ms365 - Enable Microsoft 365 provider
net-libs/gnutls:dane - Build libgnutls-dane, implementing DNS-based Authentication of Named Entities. Requires net-dns/unbound
net-libs/gnutls:openssl - Build openssl compatibility libraries
net-libs/gnutls:pkcs11 - Add support for PKCS#11 through app-crypt/p11-kit
net-libs/gnutls:sslv2 - Support for the old/insecure SSLv2 protocol
net-libs/gnutls:sslv3 - Support for the old/insecure SSLv3 protocol
net-libs/gnutls:test-full - Enable full test mode
net-libs/gnutls:tls-heartbeat - Enable the Heartbeat Extension in TLS and DTLS
net-libs/gnutls:tools - Build cli tools such as gnutls-cli, certtool and oscptool
net-libs/gssdp:man - Generate man page for tools
net-libs/libetpan:liblockfile - Enable support for liblockfile library
net-libs/libetpan:lmdb - Use dev-db/lmdb as cache DB
net-libs/libgsasl:gcrypt - Use dev-libs/libgcrypt for low-level crypto
net-libs/libgsasl:ntlm - Add support for Microsoft's NTLM mechanism using net-libs/libntlm
net-libs/libiio:aio - Enable asynchronous IO support
net-libs/libiscsi:rdma - Enable infiniband support via sys-cluster/rdma-core
net-libs/libisds:openssl - Use dev-libs/openssl as crypto backend instead of app-crypt/gpgme and dev-libs/libgcrypt
net-libs/libmicrohttpd:epoll - Support epoll() system call
net-libs/libmicrohttpd:eventfd - Use EventFD for efficient inter-thread communication
net-libs/libmicrohttpd:thread-names - Assign thread names to internal threads, useful for dependent apps debugging
net-libs/libnids:glib - Use dev-libs/glib for multiprocessing support
net-libs/libnids:libnet - Include code requiring net-libs/libnet
net-libs/libnma:pkcs11 - Enable PKCS#11 support in certificate chooser via app-crypt/gcr
net-libs/liboauth:curl - If enabled, net-misc/curl is used thorugh the libcurl library; if it's not, the curl command is used instead. Some features are only available when using the library, but using it as library requires matching SSL implementations.
net-libs/liboping:filecaps - Allow non-root users to use [n]oping utility.
net-libs/liboping:ncurses - Build ncurses-based version of oping utility (requires sys-libs/ncurses)
net-libs/libpcap:netlink - Use dev-libs/libnl to put wireless interfaces in monitor mode.
net-libs/libpcap:rdma - Enable RDMA capture support using sys-cluster/rdma-core
net-libs/libpcap:remote - Enable remote packet capture which may expose libpcap-based applications to attacks by malicious remote capture servers!
net-libs/libpcap:yydebug - Enable parser debugging code
net-libs/libprotoident:tools - Build and install command-line tools
net-libs/libproxy:duktape - Use dev-lang/duktape for PAC parsing
net-libs/libproxy:gnome - Enable support for reading proxy settings from GNOME
net-libs/libqmi:mbim - Support QMI over Mobile Broadband Interface Model (MBIM)
net-libs/libqmi:qrtr - Support QMI over IPC Router bus (QRTR)
net-libs/libsoup:gssapi - Enable GSSAPI support
net-libs/libsoup:samba - Use net-fs/samba for NTLM Single Sign-On
net-libs/libsoup:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
net-libs/libsrtp:aesicm - Use AES ICM cryptographic algorithm
net-libs/libsrtp:console - Use /dev/console instead of stdout for error messages
net-libs/libsrtp:nss - Use NSS crypto primitives
net-libs/libsrtp:openssl - Use OpenSSL crypto primitives
net-libs/libsrtp:syslog - Use syslog for error messages
net-libs/libssh:gcrypt - Use dev-libs/libgcrypt as TLS provider
net-libs/libssh:gssapi - Enable gssapi support
net-libs/libssh:mbedtls - Use net-libs/mbedtls as TLS provider
net-libs/libssh:pcap - Build with PCAP output support
net-libs/libssh:server - Build with SSH server support
net-libs/libssh:sftp - Build with SFTP support
net-libs/libssh2:gcrypt - Use dev-libs/libgcrypt instead of dev-libs/openssl
net-libs/libssh2:mbedtls - Use net-libs/mbedtls instead of dev-libs/openssl
net-libs/libtorrent-rasterbar:dht - Enable DHT (distributed hash table) support
net-libs/libtrace:numa - Use sys-process/numactl
net-libs/libupnp:blocking-tcp - Do not use async socket calls
net-libs/libupnp:reuseaddr - Allow clean restarts by binding the socket with SO_REUSEADDR
net-libs/libupnp:samples - Install sample applications
net-libs/libvncserver:24bpp - Enable 24bpp support
net-libs/libvncserver:filetransfer - Enable support for TightVNC's file transfer protocol
net-libs/libvncserver:lzo - Enable LZO support via dev-libs/lzo instead of using internal miniLZO implementation
net-libs/libwebsockets:access-log - Support generating Apache-compatible access logs
net-libs/libwebsockets:client - The client part of the library and libwebsockets-test-client
net-libs/libwebsockets:extensions - Compile with extensions (permessage-deflate)
net-libs/libwebsockets:generic-sessions - With the Generic Sessions plugin
net-libs/libwebsockets:http-proxy - Support for rewriting HTTP proxying
net-libs/libwebsockets:ipv6 - Compile without support for ipv6
net-libs/libwebsockets:lejp - With the Lightweight JSON Parser
net-libs/libwebsockets:libev - Support event loops via dev-libs/libev
net-libs/libwebsockets:libevent - Support event loops via dev-libs/libevent
net-libs/libwebsockets:libuv - Support asynchronous I/O via dev-libs/libuv
net-libs/libwebsockets:mbedtls - Use mbedTLS replacement for OpenSSL
net-libs/libwebsockets:peer-limits - Track peers and restrict resources a single peer can allocate
net-libs/libwebsockets:server-status - Support json + jscript server monitoring
net-libs/libwebsockets:smtp - Provide SMTP support
net-libs/libwebsockets:sqlite3 - Require SQLITE3 support
net-libs/loudmouth:asyncns - Use net-libs/libasyncns for asynchronous name resolution.
net-libs/loudmouth:openssl - Enable dev-libs/openssl support instead of gnutls (which is the default).
net-libs/mbedtls:cmac - Enable block cipher-based message authentication code algorithm
net-libs/mbedtls:havege - Enable the HAVEGE random generator. Warning: the HAVEGE random generator is not suitable for virtualized environments
net-libs/mbedtls:programs - Build Mbed TLS programs
net-libs/neon:libproxy - Add support for net-libs/libproxy
net-libs/neon:pkcs11 - Add support for PKCS#11 using dev-libs/pakchois
net-libs/nghttp2:hpack-tools - Install HPACK (header compression) helper tools
net-libs/nghttp2:utils - Install nghttp, nghttpd and nghttpx
net-libs/ngtcp2:openssl - Provide SSL support using OpenSSL (requires dev-libs/openssl)
net-libs/nodejs:corepack - Enable the experimental corepack package management tool
net-libs/nodejs:inspector - Enable V8 inspector
net-libs/nodejs:npm - Enable NPM package manager
net-libs/nodejs:pax-kernel - Enable building under a PaX enabled kernel
net-libs/nodejs:snapshot - Enable snapshot creation for faster startup
net-libs/nodejs:system-icu - Use system dev-libs/icu instead of the bundled version
net-libs/nodejs:system-ssl - Use system OpenSSL instead of the bundled one
net-libs/nodejs:systemtap - Enable SystemTap/DTrace tracing
net-libs/ntirpc:gssapi - Include support for RPCSEC GSS
net-libs/ntirpc:rdma - Include support for RDMA RPC
net-libs/paho-mqtt-c:high-performance - The debugging aids internal tracing and heap tracking are not included
net-libs/pjproject:amr - Inlcude AMR codec in the build
net-libs/pjproject:epoll - Use /dev/epoll ioqueue on Linux (experimental)
net-libs/pjproject:g711 - Include G.711 codecs in the build
net-libs/pjproject:g722 - Include G.722 codec in the build
net-libs/pjproject:g7221 - Include G.722.1 codec in the build
net-libs/pjproject:g729 - Include G.729 codec via net-libs/bcg729
net-libs/pjproject:ilbc - Include iLBC codec in the build
net-libs/pjproject:l16 - Include Linear/L16 codec family in the build
net-libs/pjproject:libyuv - Include libyuv in the build
net-libs/pjproject:openh264 - Include Open H.264 support in the build
net-libs/pjproject:resample - Include resampling implementations in the build
net-libs/pjproject:silk - Include SILK support in the build
net-libs/pjproject:srtp - Enable support for encrypted voice transmission (secure RTP)
net-libs/pjproject:v4l2 - Include Video4Linux v2 support in the build
net-libs/pjproject:vpx - Include VP8 and VP9 codec support in the build
net-libs/pjproject:webrtc - Enable WebRTC support
net-libs/qxmpp:omemo - Enable OMEMO encryption
net-libs/rabbitmq-c:tools - Builds cli tools to interact with brokers
net-libs/rtrlib:ssh - Enable SSH support
net-libs/shairplay:playfair - Add support for handling fairplay handshake (used in for example screen mirroring)
net-libs/tox:av - Adds support for audio and video.
net-libs/tox:daemon - Enable the DHT Bootstrap Daemon.
net-libs/tox:dht-node - Enables DHT Bootstrap Node.
net-libs/tox:experimental - Enables the experimental api
net-libs/tox:key-utils - Builds utilities to create custom keys and profiles
net-libs/tox:log-debug - Log level: 4
net-libs/tox:log-error - Log level: 1
net-libs/tox:log-info - Log level: 3
net-libs/tox:log-trace - Log level: 5
net-libs/tox:log-warn - Log level: 2
net-libs/udns:tools - Build and install dnsget, ex-rdns and rblcheck tools
net-libs/wandio:http - Build support for reading files over HTTP using net-misc/curl
net-libs/webkit-gtk:examples - Install the MiniBrowser example application
net-libs/webkit-gtk:gamepad - Enable gamepad input support via dev-libs/libmanette
net-libs/webkit-gtk:jumbo-build - Combine source files to speed up build process
net-libs/wvstreams:boost - Use dev-libs/boost to provide TR1-compatible functional interface. This USE flag is only needed with GCC earlier than version 4.1, or with other compilares not providing said interface.
net-libs/xdp-tools:tools - Install various helper tools rather than just libxdp.
net-libs/xrootd:ceph - Enable suport for sys-cluster/ceph (XrdCeph plugin)
net-libs/xrootd:fuse - Enable the sys-fs/fuse filesystem driver
net-libs/xrootd:http - Enable http protocol support
net-libs/xrootd:libxml2 - Use dev-libs/libxml2 for XML parsing (preferred) instead of bundled tinyxml
net-libs/xrootd:macaroons - Enable support for macaroons with dev-libs/libmacaroons
net-libs/xrootd:scitokens - Enable support for scitokens with dev-cpp/scitokens-cpp
net-libs/xrootd:server - Install xrootd server and related plug-ins
net-libs/xrootd:xrdec - Enable erasure coding support (XrdEc plugin) with dev-libs/isa-l
net-libs/zeromq:drafts - Build draft API, which may change at any time without any notice, and is therefore not recommended for normal use.
net-libs/zeromq:libbsd - Use strlcpy() from dev-libs/libbsd instead of internal implementation.
net-libs/zeromq:sodium - Use dev-libs/libsodium for cryptography
net-mail/courier-imap:trashquota - include deleted messages, and the Trash folder, in the estimated quota usage for maildirs
net-mail/cyrus-imapd:backup - Enable backup service support
net-mail/cyrus-imapd:calalarm - Enable CalDAV alarm support
net-mail/cyrus-imapd:http - Enable http and http/2 support
net-mail/cyrus-imapd:replication - Enable replication support
net-mail/cyrus-imapd:server - Enable building server binaries
net-mail/cyrus-imapd:sieve - Enable sieve support
net-mail/cyrus-imapd:xapian - Enable Xapian search engine support
net-mail/dbmail:sieve - Enable sieve filter support
net-mail/dovecot:argon2 - Add support for ARGON2 password schemes
net-mail/dovecot:lucene - Add lucene full text search (FTS) support using dev-cpp/clucene
net-mail/dovecot:managesieve - Add managesieve protocol support
net-mail/dovecot:rpc - Add support for NFS quotas
net-mail/dovecot:sieve - Add sieve support
net-mail/dovecot:solr - Add solr full text search (FTS) support
net-mail/dovecot:stemmer - Add libstemmer support (for FTS)
net-mail/dovecot:textcat - Add libtextcat language guessing support for full text search (FTS)
net-mail/fetchmail:socks - Enable support for socks proxy
net-mail/fetchmail:tk - Enable support for Tk GUI toolkit, in particular it installs fetchmailconf
net-mail/gnubiff:password - Enable save passwords to connect mail servers in user space
net-mail/lbdb:abook - Enables app-misc/abook support
net-mail/lbdb:bbdb - Include support for app-emacs/bbdb
net-mail/lbdb:evo - Add support for mail-client/evolution
net-mail/lbdb:finger - Enables finger support
net-mail/mailutils:clients - Build client programs - frm maidag mail sieve messages readmsg dotlock movemail mimeview mh
net-mail/mailutils:kyotocabinet - Enable Kyoto Cabinet database support
net-mail/mailutils:servers - Build server programs - imap4d pop3d comsatd
net-mail/mailutils:tokyocabinet - Enable Tokyo Cabinet database support
net-mail/mboxgrep:dmalloc - Enable debugging using dev-libs/dmalloc
net-mail/mu:emacs - Install the mu4e mail client
net-mail/notmuch:apidoc - Provide doxygen generated API docs
net-mail/notmuch:crypt - Support decryption and verification of PGP/MIME messages and in Emacs UI - encryption; support also S/MIME signature verification since version 0.22
net-mail/notmuch:doc - Install API documentation
net-mail/notmuch:emacs - Install Emacs UI (the main one)
net-mail/notmuch:mutt - Install helper script for Mutt
net-mail/notmuch:nmbug - Install experimental tag sharing / pseudo-bug-tracking script for Notmuch (see http://notmuchmail.org/nmbug/)
net-mail/qmailadmin:maildrop - Filter spam using maildrop
net-mail/tpop3d:authexternal - Enable authentication by an external program
net-mail/tpop3d:flatfile - Enable authentication against /etc/passwd-style flat files
net-mail/tpop3d:passwd - Enable /etc/passwd authentication
net-mail/tpop3d:sha1 - Use OpenSSL for sha1 encrypted passwords.
net-mail/tpop3d:shadow - Enable /etc/shadow authentication
net-mail/vpopmail:clearpasswd - Enables cleartext password storage in the vpasswd files
net-mail/vpopmail:ipalias - Enables enable-ip-alias-domains
net-mail/vpopmail:maildrop - Enables mail-filter/maildrop support in vdelivermail
net-mail/vpopmail:spamassassin - Enables mail-filter/spamassassin support
net-misc/AQtion:lro - Enable/disable Large Receive Offload. This MUST be disabled for bridging or forwarding.
net-misc/apt-cacher-ng:fuse - Install the sys-fs/fuse based acngfs, to use a userspace filesystem for the apt cache.
net-misc/aria2:bittorrent - Enable support for the bittorrent protocol.
net-misc/aria2:gnutls - Use net-libs/gnutls as TLS provider (preferred). Otherwise, dev-libs/openssl will be used as TLS provider. Both apply only with USE=ssl.
net-misc/aria2:libuv - Use dev-libs/libuv backend.
net-misc/aria2:libxml2 - Use dev-libs/libxml2 for XML parsing (preferred) instead of dev-libs/expat.
net-misc/aria2:metalink - Enable support for metalink.
net-misc/aria2:nettle - Use dev-libs/nettle for message digests, plus dev-libs/gmp for bittorrent (if enabled). If this flag is disabled, dev-libs/libgcrypt is used instead. This flag is ignored if dev-libs/openssl is used.
net-misc/aria2:scripts - Install additional scripts which use aria2's xmlrpc functionality.
net-misc/aria2:ssh - Enable SFTP support.
net-misc/asterisk:blocks - Utlize -fblocks (only supported by, and required when using, clang/LLVM)
net-misc/asterisk:cluster - Enable high-availability support through the Corosync Cluster Engine
net-misc/asterisk:codec2 - Enable Codec2 support in asterisk
net-misc/asterisk:deprecated - Enable deprecated features (eg, app_macro)
net-misc/asterisk:gtalk - Enable support for Google Talk services
net-misc/asterisk:http - Enable embedded web server
net-misc/asterisk:ilbc - Enable the Internet Low Bitrate Codec (iLBC)
net-misc/asterisk:newt - Include additional tools that require redhats windowing toolkit
net-misc/asterisk:pjproject - Enable support for pjproject (pjsip)
net-misc/asterisk:span - Enable support for the spandsp codec
net-misc/asterisk:srtp - Enable support for encrypted voice transmission (secure RTP)
net-misc/asterisk:statsd - Enable statsd integration
net-misc/asterisk:unbound - Enable improved DNS core (SRV, NAPTR) by use of libunbound
net-misc/asterisk-core-sounds:alaw - Install the sounds files for the alaw codec.
net-misc/asterisk-core-sounds:g722 - Install the sounds files for the g722 codec.
net-misc/asterisk-core-sounds:g729 - Install the sounds files for the g729 codec.
net-misc/asterisk-core-sounds:siren14 - Install the sounds files for the siren14 codec.
net-misc/asterisk-core-sounds:siren7 - Install the sounds files for the siren7 codec.
net-misc/asterisk-core-sounds:sln16 - Install the sounds files for the sln16 codec.
net-misc/asterisk-core-sounds:ulaw - Install the sounds files for the ulaw codec.
net-misc/asterisk-core-sounds:wav - Install the sounds files for the wav codec.
net-misc/asterisk-extra-sounds:alaw - Install the sounds files for the alaw codec.
net-misc/asterisk-extra-sounds:g722 - Install the sounds files for the g722 codec.
net-misc/asterisk-extra-sounds:g729 - Install the sounds files for the g729 codec.
net-misc/asterisk-extra-sounds:gsm - Install the sounds files for the gsm codec.
net-misc/asterisk-extra-sounds:siren14 - Install the sounds files for the siren14 codec.
net-misc/asterisk-extra-sounds:siren7 - Install the sounds files for the siren7 codec.
net-misc/asterisk-extra-sounds:sln16 - Install the sounds files for the sln16 codec.
net-misc/asterisk-extra-sounds:ulaw - Install the sounds files for the ulaw codec.
net-misc/asterisk-extra-sounds:wav - Install the sounds files for the wav codec.
net-misc/asterisk-moh-opsound:alaw - Install the sounds files for the alaw codec.
net-misc/asterisk-moh-opsound:g722 - Install the sounds files for the g722 codec.
net-misc/asterisk-moh-opsound:g729 - Install the sounds files for the g729 codec.
net-misc/asterisk-moh-opsound:gsm - Install the sounds files for the gsm codec.
net-misc/asterisk-moh-opsound:siren14 - Install the sounds files for the siren14 codec.
net-misc/asterisk-moh-opsound:siren7 - Install the sounds files for the siren7 codec.
net-misc/asterisk-moh-opsound:sln16 - Install the sounds files for the sln16 codec.
net-misc/asterisk-moh-opsound:ulaw - Install the sounds files for the ulaw codec.
net-misc/asterisk-moh-opsound:wav - Install the sounds files for the wav codec.
net-misc/bird:client - Build the ncurses/readline full featured CLI
net-misc/bird:libssh - Enables net-libs/libssh binding, mendatory for RPKI support
net-misc/casync:fuse - Enable fuse support
net-misc/cgminer:ants1 - Enable support for Antminer S1 Bitmain
net-misc/cgminer:ants2 - Enable support for Antminer S2 Bitmain
net-misc/cgminer:ants3 - Enable support for Antminer S3 Bitmain
net-misc/cgminer:avalon - Enable support for Avalon ASICs
net-misc/cgminer:avalon-miner - Enable support for Avalon miner ASICs
net-misc/cgminer:avalon2 - Enable support for Avalon2 ASICs
net-misc/cgminer:avalon4 - Enable support for Avalon4 ASICs
net-misc/cgminer:avalon7 - Enable support for Avalon7 ASICs
net-misc/cgminer:bab - Enable support for BlackArrow Bitfury
net-misc/cgminer:bflsc - Enable support for BFL ASICs
net-misc/cgminer:bitforce - Enable support for mining with ButterFly Labs BitFORCE FPGAs
net-misc/cgminer:bitfury - Enable support for mining with BitFury ASICs
net-misc/cgminer:bitmine_A1 - Enable support for mining with Bitmine.ch A1 ASICs
net-misc/cgminer:blockerupter - Enable support for mining with BlockRupter ASICs
net-misc/cgminer:cointerra - Enable support for mining with Cointerra ASICs
net-misc/cgminer:drillbit - Enable support for mining with Drillbit BitFury ASICs
net-misc/cgminer:hashfast - Enable support for mining with Hashfast
net-misc/cgminer:hashratio - Enable support for mining with Hashratio
net-misc/cgminer:icarus - Enable support for mining with Icarus FPGAs
net-misc/cgminer:klondike - Enable support for mining with Klondik ASICs
net-misc/cgminer:knc - Enable support for mining with KnC miners
net-misc/cgminer:minion - Enable support for mining with BlackArrow Bitfury
net-misc/cgminer:modminer - Enable support for mining with ModMiner FPGAs
net-misc/cgminer:sp10 - Enable support for Spondoolies SP10
net-misc/cgminer:sp30 - Enable support for Spondoolies SP30
net-misc/chrony:cmdmon - Support for command and monitoring
net-misc/chrony:debug - Get DEBUG_LOG output from chronyd when passing -dd parameter
net-misc/chrony:html - Install HTML documentation
net-misc/chrony:libtomcrypt - Support different hashes via dev-libs/libtomcrypt
net-misc/chrony:nettle - Use dev-libs/nettle for hash functions or nts
net-misc/chrony:nss - Use dev-libs/nss for hash functions
net-misc/chrony:ntp - Support for the Network Time Protocol (NTP)
net-misc/chrony:nts - Support for Network Time Security (NTS). Uses net-libs/gnutls
net-misc/chrony:phc - Support for the PTP (Precision Time Protocol) Hardware Clock (PHC) interface
net-misc/chrony:pps - Support for the Linux Pulse Per Second (PPS) interface
net-misc/chrony:refclock - Support for reference clocks
net-misc/chrony:rtc - Support for the Linux Real Time Clock interface
net-misc/chrony:sechash - Enable support for hashes other than MD5
net-misc/connman:ethernet - Enable ethernet support.
net-misc/connman:iptables - Use net-firewall/iptables as firewall.
net-misc/connman:iwd - Enable wifi support via net-wireless/iwd
net-misc/connman:l2tp - Use net-dialup/xl2tpd for L2TP VPN support.
net-misc/connman:nftables - Use net-firewall/nftables as firewall.
net-misc/connman:ofono - Use net-misc/ofono for telephony support.
net-misc/connman:openconnect - Use net-vpn/openconnect for VPN support.
net-misc/connman:openvpn - Use net-vpn/openvpn for openvpn support.
net-misc/connman:pptp - Use net-dialup/pptpclient for PPTP VPN support.
net-misc/connman:tools - Enable testing tools.
net-misc/connman:vpnc - Use net-vpn/vpnc for cisco VPN support.
net-misc/connman:wireguard - Enable WireGuard VPN support.
net-misc/connman:wispr - Enable support for WISPr hotspot logins.
net-misc/connman-gtk:openconnect - Support easier authentication to AnyConnect VPNs
net-misc/curl:alt-svc - Enable alt-svc support
net-misc/curl:ftp - Enable FTP support
net-misc/curl:gnutls - Enable gnutls ssl backend
net-misc/curl:gopher - Enable Gopher protocol support
net-misc/curl:hsts - Enable HTTP Strict Transport Security
net-misc/curl:http3 - Enable HTTP/3 support
net-misc/curl:imap - Enable Internet Message Access Protocol support
net-misc/curl:mbedtls - Enable mbedtls ssl backend
net-misc/curl:nghttp3 - Enable HTTP/3 support using net-libs/nghttp3
net-misc/curl:openssl - Enable openssl ssl backend
net-misc/curl:pop3 - Enable Post Office Protocol 3 support
net-misc/curl:progress-meter - Enable the progress meter
net-misc/curl:psl - Enable Public Suffix List (PSL) support. See https://daniel.haxx.se/blog/2024/01/10/psl-in-curl/.
net-misc/curl:quic - Enable support for QUIC (RFC 9000); a UDP-based protocol intended to replace TCP
net-misc/curl:rtmp - Enable RTMP Streaming Media support
net-misc/curl:rustls - Enable Rustls ssl backend
net-misc/curl:smtp - Enable Simple Mail Transfer Protocol support
net-misc/curl:ssh - Enable SSH urls in curl using libssh2
net-misc/curl:ssl - Enable crypto engine support (via openssl if USE='-gnutls -nss')
net-misc/curl:sslv3 - Support for the old/insecure SSLv3 protocol
net-misc/curl:telnet - Enable Telnet protocol support
net-misc/curl:tftp - Enable TFTP support
net-misc/curl:websockets - Enable websockets support
net-misc/dhcp:client - Install the dhclient program
net-misc/dhcp:server - Install the dhcpd and dhcrelay programs
net-misc/dhcpcd:embedded - Embed the definitions of dhcp options in the dhcpcd executable
net-misc/dhcpcd:privsep - Enable support for privilege separation
net-misc/dibbler:resolvconf - Use resolvconf to handle /etc/resolv.conf updates
net-misc/dropbear:bsdpty - Add support for legacy BSD pty's rather than dynamic UNIX pty's -- do not use this flag unless you are absolutely sure you actually want it
net-misc/dropbear:multicall - Build all the programs as one little binary (to save space)
net-misc/dropbear:shadow - Enable shadow password support
net-misc/dropbox-cli:gpg - Use app-crypt/gpgme to verify signatures
net-misc/electron-cash:amodem - Enable plugin to support Audio Modem
net-misc/electron-cash:cli - Enables the CLI interface
net-misc/electron-cash:cosign - Enable plugin to support multisig wallets between multiple Electrum clients
net-misc/electron-cash:digitalbitbox - Enable plugin to support Digital Bitbox hardware wallet
net-misc/electron-cash:email - Enable plugin to support emailing invoices
net-misc/electron-cash:qrcode - Enable QR code scanning with media-gfx/zbar
net-misc/electron-cash:sync - Enable plugin to sync wallet metadata across multiple Electrum clients
net-misc/electron-cash:vkb - Enable plugin for virtual keyboard
net-misc/electrum:cli - Enables the CLI interface
net-misc/electrum:qrcode - Enable QR code scanning with media-gfx/zbar
net-misc/electrum-ltc:cli - Enables the CLI interface
net-misc/electrum-ltc:qrcode - Enable QR code scanning with media-gfx/zbar
net-misc/etherdfs:tsr - Install the precompiled TSR program for DOS, which acts as a client.
net-misc/ethflop:tsr - Build the TSR program for DOS, which acts as a client.
net-misc/eventd:libcanberra - Enable plugin for sounds via media-libs/libcanberra
net-misc/eventd:libnotify - Enable plugin to relay events to notification daemon (Note: not required for local notifications via net-misc/eventd)
net-misc/eventd:notification - Enable plugin to display on-screen notifications
net-misc/eventd:purple - Enable plugin for IM notifications via libpurple
net-misc/eventd:webhook - Enable plugin to send payloads to webhook handlers
net-misc/eventd:websocket - Enable support for WebSocket protocol
net-misc/fatrat:bittorrent - Use the bittorrent protocol via net-libs/libtorrent-rasterbar.
net-misc/freerdp:aad - Enable login via Azure AD
net-misc/freerdp:client - Build client binaries
net-misc/freerdp:fuse - Clipboard with FUSE file copy support
net-misc/freerdp:openh264 - Enable H.264 support using media-libs/openh264
net-misc/freerdp:server - Build server binaries
net-misc/frr:fpm - Enable Forwarding Plane Manager support
net-misc/frr:grpc - Enable gRPC plugin
net-misc/frr:nhrp - Build Next Hop Resolution Protocol daemon
net-misc/frr:ospfapi - Build OSPFAPI support
net-misc/frr:pam - Add support for PAM (via sys-libs/pam) to the Virtual Terminal Interface Shell (vtysh)
net-misc/frr:rpki - Enable RPKI
net-misc/geckodriver:unchained - Apply the geckodriver-unchained patch, for Gecko-based non-Firefox browsers (e.g. Librewolf)
net-misc/gerbera:curl - Support HTTP media sources (e.g. internet radio)
net-misc/gerbera:exiv2 - Use media-gfx/exiv2 to extract EXIF information
net-misc/gerbera:ffmpegthumbnailer - Enable video thumbnail support with media-video/ffmpegthumbnailer
net-misc/gerbera:mysql - Use dev-db/mysql as backend rather than SQLite3
net-misc/gerbera:taglib - Use media-libs/taglib for reading files' metadata
net-misc/gnome-remote-desktop:aac - Use media-libs/fdk-aac for audio output redirection of the RDP backend
net-misc/gsasl:client - Build client component
net-misc/gsasl:gcrypt - Use dev-libs/libgcrypt for low-level crypto
net-misc/gsasl:ntlm - Add support for Microsoft's NTLM mechanism using net-libs/libntlm
net-misc/gsasl:server - Build server component
net-misc/htbinit:esfq - Add support for Enhanced Stochastic Fairness queueing discipline.
net-misc/hylafaxplus:html - Convert faxes into html email
net-misc/hylafaxplus:jbig - JBIG Fax Compression Support
net-misc/hylafaxplus:mgetty - Receive faxes via serial port connections
net-misc/hylafaxplus:pam - hfaxd authentication via PAM
net-misc/icaclient:hdx - Install and enable hdx-realtime-media-engine plugin
net-misc/icaclient:usb - Allow connecting USB devices to virtual desktops
net-misc/icecast:kate - Add karaoke and text encapsulation support for Ogg files
net-misc/icecast:yp - Build support for yp public directory listings
net-misc/inetutils:dnsdomainname - Enable domainname
net-misc/inetutils:ftp - Enable ftp
net-misc/inetutils:ftpd - Enable ftpd
net-misc/inetutils:hostname - Enable hostname
net-misc/inetutils:ifconfig - Enable ifconfig
net-misc/inetutils:inetd - Enable inetd
net-misc/inetutils:logger - Enable logger
net-misc/inetutils:ping - Enable ping
net-misc/inetutils:ping6 - Enable ping6
net-misc/inetutils:rcp - Enable rcp
net-misc/inetutils:rexec - Enable rexec
net-misc/inetutils:rexecd - Enable rexecd
net-misc/inetutils:rlogin - Enable rlogin
net-misc/inetutils:rlogind - Enable rlogind
net-misc/inetutils:rsh - Enable rsh
net-misc/inetutils:rshd - Enable rshd
net-misc/inetutils:syslogd - Enable syslogd
net-misc/inetutils:talkd - Enable talkd
net-misc/inetutils:telnet - Enable telnet
net-misc/inetutils:telnetd - Enable telnetd
net-misc/inetutils:tftp - Enable tftp
net-misc/inetutils:tftpd - Enable tftpd
net-misc/inetutils:traceroute - Enable traceroute
net-misc/inetutils:uucpd - Enable uucpd
net-misc/inetutils:whois - Enable whois
net-misc/iputils:arping - Build and install arping -- tool for sending ARP requests to peers (see also net-analyzer/arping)
net-misc/iputils:clockdiff - Build and install clockdiff -- tool for comparing clocks via ICMP packets
net-misc/iputils:rarpd - Build and install rarpd -- server for handling RARP (reverse ARP) requests; generally only used by old systems
net-misc/iputils:rdisc - Build and install rdisc -- server for the client side of the ICMP router discover protocol
net-misc/iputils:tracepath - Build and install tracepath -- tool for tracing network paths for discovering MTU values
net-misc/kafka-bin:connect - Install init for Kafka Connect Distributed mode
net-misc/kafka-bin:internal-zookeeper - Use bundled local zookeeper instance
net-misc/kafkacat:avro - Enable avro serialization/deserialization support
net-misc/kafkacat:json - Enable json support
net-misc/kea:openssl - Use dev-libs/openssl instead of dev-libs/botan
net-misc/kea:samples - Install sample configuration files
net-misc/kea:shell - Install kea-shell text management client for Control Agent
net-misc/knock:server - Installs the knockd server daemon.
net-misc/libteam:zmq - Build witch net-libs/zeromq support
net-misc/lldpd:cdp - Enable Cisco Discovery Protocol
net-misc/lldpd:dot1 - Enable Dot1 extension (VLAN stuff)
net-misc/lldpd:dot3 - Enable Dot3 extension (PHY stuff)
net-misc/lldpd:edp - Enable Extreme Discovery Protocol
net-misc/lldpd:fdp - Enable Foundry Discovery Protocol
net-misc/lldpd:graph - Create dot graphs in documentations
net-misc/lldpd:lldpmed - Enable LLDP-MED extension
net-misc/lldpd:old-kernel - Enable compatibility with Linux kernel older than 2.6.39
net-misc/lldpd:sanitizers - Enable code instrumentation with selected sanitizers
net-misc/lldpd:snmp - Enable the use of SNMP
net-misc/lldpd:sonmp - Enable SynOptics Network Management
net-misc/memcached:slabs-reassign - Allow manual reassignment of memory slabs at the cost of slab optimizations.
net-misc/minidlna:netgear - Enable netgear branding
net-misc/minidlna:readynas - Enable readynas branding
net-misc/miniupnpd:igd2 - Build for IGDv2 instead of an IGDv1
net-misc/miniupnpd:leasefile - Enable lease file.
net-misc/miniupnpd:nftables - Use net-firewall/nftables rather than net-firewall/iptables.
net-misc/miniupnpd:pcp-peer - Enable support for PCP-PEER to allow NAT-PMP clients to mangle their packets.
net-misc/miniupnpd:portinuse - Check if a port is in use before allowing a NAT-PMP client to map it.
net-misc/miniupnpd:strict - Be more strict regarding compliance with UPnP specifications.
net-misc/modemmanager:mbim - Enable MBIM modem protocol
net-misc/modemmanager:qmi - Enable support for the QMI modem protocol used by devices with Qualcomm chipsets
net-misc/modemmanager:qrtr - Enable support for the QMI over IPC Router bus (QRTR) protocol
net-misc/moonlight:cuda - Enable accelerated video rendering on NVIDIA hardware
net-misc/moonlight:embedded - Optimize UI for fullscreen non-desktop usage
net-misc/moonlight:glslow - Prefer direct KMS/DRM rendering over EGL/GLES rendering for better performance on some weaker GPUs
net-misc/moonlight:libdrm - Enable video rendering via x11-libs/libdrm
net-misc/moonlight:soundio - Enable sound output via media-libs/libsoundio instead of media-libs/libsdl2
net-misc/moonlight:vkslow - Prefer hardware YUV-RGB conversion and scaling over Vulkan for better performance on some weaker GPUs
net-misc/mosh:client - Build network client
net-misc/mosh:examples - Include example scripts
net-misc/mosh:mosh-hardening - Enable compiler and linker options to frustrate memory corruption exploits
net-misc/mosh:nettle - Use dev-libs/nettle for some cryptographic functions instead of dev-libs/openssl. With Nettle, some of mosh's own code is used for OCB.
net-misc/mosh:server - Build network server
net-misc/mosh:ufw - Install net-firewall/ufw rule set
net-misc/mosh:utempter - Include libutempter support
net-misc/mulk:checksum - Enable checksum verification for Metalink from dev-libs/openssl
net-misc/mulk:metalink - Enable support for media-libs/libmetalink
net-misc/netifrc:dhcp - Allow interfaces to configure via DHCP
net-misc/netkit-bootparamd:libtirpc - Build against net-libs/libtirpc for RPC support
net-misc/networkmanager:concheck - Enable connectivity checking support
net-misc/networkmanager:connection-sharing - Support connection sharing (uses net-dns/dnsmasq)
net-misc/networkmanager:dhclient - Use dhclient from net-misc/dhcp for getting an IP via DHCP
net-misc/networkmanager:dhcpcd - Use net-misc/dhcpcd for getting an IP
net-misc/networkmanager:elogind - Use sys-auth/elogind for session tracking
net-misc/networkmanager:iptables - Use net-firewall/iptables for connection sharing
net-misc/networkmanager:iwd - Use net-wireless/iwd instead of net-wireless/wpa_supplicant for wifi support by default
net-misc/networkmanager:modemmanager - Enable support for mobile broadband devices using net-misc/modemmanager
net-misc/networkmanager:nftables - Use net-firewall/nftables for connection sharing
net-misc/networkmanager:nss - Use dev-libs/nss for cryptography
net-misc/networkmanager:ofono - Use net-misc/ofono for telephony support.
net-misc/networkmanager:ovs - Enable OpenVSwitch support
net-misc/networkmanager:ppp - Enable support for mobile broadband and PPPoE connections using net-dialup/ppp
net-misc/networkmanager:psl - Use public suffix list via net-libs/libpsl
net-misc/networkmanager:resolvconf - Use net-dns/openresolv for managing DNS information in /etc/resolv.conf. Generally, a symlink to /run/NetworkManager/resolv.conf is simpler. On systems running systemd-resolved, disable this flag and create a symlink to /run/systemd/resolve/stub-resolv.conf.
net-misc/networkmanager:teamd - Enable Teamd control support
net-misc/networkmanager:tools - Build cli tools such as nmcli, nmtui and nm_cloud_setup
net-misc/networkmanager:wext - Enable support for the deprecated Wext (Wireless Extensions) API; needed for some older drivers (e.g. ipw2200, ndiswrapper)
net-misc/networkmanager:wifi - Enable support for wifi and 802.1x security
net-misc/nextcloud-client:dolphin - Install the kde-apps/dolphin extension
net-misc/nextcloud-client:nautilus - Install the gnome-base/nautilus extension
net-misc/nextcloud-client:webengine - Enable old Flow1 login using dev-qt/qtwebengine
net-misc/ntp:openntpd - Allow ntp to be installed alongside openntpd
net-misc/ntp:parse-clocks - Add support for PARSE clocks
net-misc/ntp:samba - Provide support for Samba's signing daemon (needed for Active Directory domain controllers)
net-misc/ntpsec:arbiter - Arbiter 1088A/B GPS driver
net-misc/ntpsec:early - Drop root privileges early
net-misc/ntpsec:gdb - Enable debugging with gdb
net-misc/ntpsec:generic - Enable support for generic time radios and GPSDOs
net-misc/ntpsec:gpsd - Enable gpsd daemon support
net-misc/ntpsec:heat - Install contrib heat generating scripts
net-misc/ntpsec:hpgps - Hewlett Packard GPS driver
net-misc/ntpsec:jjy - JJY driver
net-misc/ntpsec:libbsd - Use libbsd instead of internal funcs
net-misc/ntpsec:local - Support for undisciplined local clock (not recommended)
net-misc/ntpsec:modem - NIST/USNO/PTB Modem Time Services
net-misc/ntpsec:nist - Set local clock deps
net-misc/ntpsec:nmea - NMEA GPS driver
net-misc/ntpsec:ntpviz - Make visualizations of offsets, jiffies, etc.
net-misc/ntpsec:oncore - Oncore driver
net-misc/ntpsec:pps - PPS cesium clock driver
net-misc/ntpsec:rclock_arbiter - Arbiter 1088A/B GPS driver
net-misc/ntpsec:rclock_generic - Enable support for generic time radios and GPSDOs
net-misc/ntpsec:rclock_gpsd - Enable gpsd daemon support
net-misc/ntpsec:rclock_hpgps - Hewlett Packard GPS driver
net-misc/ntpsec:rclock_jjy - JJY driver
net-misc/ntpsec:rclock_local - Support for undisciplined local clock (not recommended)
net-misc/ntpsec:rclock_modem - NIST/USNO/PTB Modem Time Services
net-misc/ntpsec:rclock_nmea - NMEA GPS driver
net-misc/ntpsec:rclock_oncore - Oncore driver
net-misc/ntpsec:rclock_pps - PPS cesium clock driver
net-misc/ntpsec:rclock_shm - Obtain refclock info from shared memory-segment
net-misc/ntpsec:rclock_spectracom - Spectracom driver
net-misc/ntpsec:rclock_trimble - Trimble driver
net-misc/ntpsec:rclock_truetime - Trutime driver (deprecated)
net-misc/ntpsec:rclock_zyfer - Zyfer driver
net-misc/ntpsec:shm - Obtain refclock info from shared memory-segment
net-misc/ntpsec:smear - Specify the interval over which a leap second is applied (experimental)
net-misc/ntpsec:spectracom - Spectracom driver
net-misc/ntpsec:trimble - Trimble driver
net-misc/ntpsec:truetime - Trutime driver (deprecated)
net-misc/ntpsec:zyfer - Zyfer driver
net-misc/ofono:atmodem - ETSI AT modem support.
net-misc/ofono:bluetooth - Enable Bluetooth modem support using net-wireless/bluez.
net-misc/ofono:cdmamodem - Enable CDMA modem support.
net-misc/ofono:datafiles - Enable install configuration and data files.
net-misc/ofono:dundee - Enable BlueTooth DUN deamon support.
net-misc/ofono:isimodem - Enable PhoNet/ISI modem support.
net-misc/ofono:phonesim - Enable phone Simulator support
net-misc/ofono:provision - Enable GPRS provisioning support
net-misc/ofono:qmimodem - Enable Qualcomm QMI modem support
net-misc/ofono:tools - Enable testing tools
net-misc/oidentd:masquerade - Enable support for masqueraded/NAT connections
net-misc/olsrd:pud - Install the Node Position Update plugin
net-misc/openntpd:constraints - Enable HTTPS TLS time constraint support
net-misc/openssh:ldns - Use LDNS for DNSSEC/SSHFP validation.
net-misc/openssh:legacy-ciphers - Enable support for deprecated, soon-to-be-dropped DSA keys. See https://marc.info/?l=openssh-unix-dev>m=170494903207436>w=2.
net-misc/openssh:livecd - Enable root password logins for live-cd environment.
net-misc/openssh:security-key - Include builtin U2F/FIDO support
net-misc/openssh:ssl - Enable additional crypto algorithms via OpenSSL
net-misc/openssh:xmss - Enable XMSS post-quantum authentication algorithm
net-misc/openssh-contrib:X509 - Adds support for X.509 certificate authentication
net-misc/openssh-contrib:hpn - Enable high performance ssh
net-misc/openssh-contrib:ldns - Use LDNS for DNSSEC/SSHFP validation.
net-misc/openssh-contrib:livecd - Enable root password logins for live-cd environment.
net-misc/openssh-contrib:security-key - Include builtin U2F/FIDO support
net-misc/openssh-contrib:ssl - Enable additional crypto algorithms via OpenSSL
net-misc/openssh-contrib:xmss - Enable XMSS post-quantum authentication algorithm
net-misc/openvswitch:monitor - Build the Python and GUI dependent monitor applications
net-misc/owncloud-client:dolphin - Install the kde-apps/dolphin extension
net-misc/owncloud-client:nautilus - Install the gnome-base/nautilus extension
net-misc/packETH:cli - Build and install packETHcli
net-misc/plowshare:view-captcha - View captcha with aview
net-misc/ps3mediaserver:multiuser - Allow renderer customization per-user.
net-misc/ps3mediaserver:transcode - Install optional dependencies for transcoding support via media-video/mplayer
net-misc/ps3mediaserver:tsmuxer - Install optional dependencies for transcoding support via media-video/tsmuxer
net-misc/ptpd:debug - Enable debugging informations
net-misc/ptpd:experimental - Enable experimental features
net-misc/ptpd:ntp - Enable NTPD cooperation
net-misc/ptpd:pcap - Require net-libs/libpcap to allow layer 2 (raw Ethernet) transport
net-misc/ptpd:slave-only - Enable slave only operation (remove master mode functionality)
net-misc/ptpd:snmp - Require net-analyzer/net-snmp to enable SNMP configuration
net-misc/ptpd:statistics - Enable compution of statistics
net-misc/putty:gssapi - Enable support for GSSAPI (virtual/krb5)
net-misc/putty:gtk - Build the PuTTY client which requires x11-libs/gtk+. If disabled only the CLI tools puttygen, plink, pscp and psftp will be built
net-misc/r8125:multi-tx-q - Enable Multiple Tx Queue ("RSS" for sending)
net-misc/r8125:ptp - Enable Precision Time Protocol support
net-misc/r8125:rss - Enable Receive Side Scaling (RSS)
net-misc/r8125:use-firmware - Support automatic firmware loading
net-misc/r8152:center-tap-short - Enable support for center tap short
net-misc/r8168:use-firmware - Enable support for automatic firmware loading
net-misc/rdesktop:kerberos - Enable CredSPP support + Kerberos authentication
net-misc/rdesktop:pcsc-lite - Enable smartcard support with sys-apps/pcsc-lite driver
net-misc/rdesktop:xrandr - Enable XRandR window extension support
net-misc/remmina:gvnc - Enable GVNC plugin using gtk-vnc, suitable for KVM and Vino servers
net-misc/remmina:kwallet - Enable KDE Wallet plugin
net-misc/remmina:spice - Support connecting to SPICE-enabled virtual machines
net-misc/remmina:ssh - Enable support for SSH/SFTP protocol
net-misc/rsync:rrsync - Install rrsync script to setup restricted rsync users via ssh logins
net-misc/rsync:stunnel - Provide helper scripts for using rsync via >=net-misc/stunnel-4
net-misc/rsync:system-zlib - Use system zlib instead of bundled one. This is incompatible with older rsync releases!
net-misc/rsync:xxhash - Enable dev-libs/xxhash support for hashing
net-misc/rygel:tracker - Install dependencies for the tracker plugin
net-misc/rygel:transcode - Install dependencies for transcoding support
net-misc/scponly:chroot - Enables adding and configuring an 'scponlyc' chrooted user
net-misc/scponly:gftp - Enables gFTP compatibility
net-misc/scponly:logging - Enables SFTP logging compatibility
net-misc/scponly:passwd - Enables passwd compatibility
net-misc/scponly:quota - Enables quota compatibility
net-misc/scponly:rsync - Enables rsync compatibility with potential security risks
net-misc/scponly:scp - Enables scp compatibility with potential security risks
net-misc/scponly:sftp - Enables SFTP compatibility
net-misc/scponly:subversion - Enables Subversion compatibility with potential security risks
net-misc/scponly:unison - Enables Unison compatibility with potential security risks
net-misc/scponly:wildcards - Enables wildcard processing with potential security risks
net-misc/scponly:winscp - Enables WinSCP 2.0 compatibility with potential security risks
net-misc/seafile-client:shibboleth - Build support for Shibboleth single sign-on
net-misc/sipp:pcap - Enable functionality to replay RTP data from a pcap file
net-misc/sitecopy:rsh - This allows the use of rsh (remote shell) and rcp (remote copy) for authoring websites. sftp is a much more secure protocol and is preferred.
net-misc/sitecopy:webdav - Enable WebDav (Web-based Distributed Authoring and Versioning) support. This system allows users to collaborate on websites using a web based interface. See the ebuild for an FAQ page. Enables neon as well to handle webdav support.
net-misc/sks:optimize - Enables bytecode optimization
net-misc/smb4k:discovery - Build with net-libs/kdsoap-ws-discovery-client support to discover domains and workgroups
net-misc/sntpd:adjtimex - Install adjtimex for the clock adjustment algorithm.
net-misc/spice-gtk:gtk3 - Build the spice client (spicy), requires x11-libs/gtk+:3
net-misc/spice-gtk:mjpeg - Enable builtin mjpeg video decoder
net-misc/spice-gtk:policykit - Enable sys-auth/polkit support for the usbredir acl helper
net-misc/spice-gtk:usbredir - Use sys-apps/usbredir to redirect USB devices to another machine over TCP
net-misc/spice-gtk:webdav - Support for folder-sharing between guest and client using net-libs/phodav
net-misc/sshrc:mosh - Install Support for mosh
net-misc/sslh:libev - Support event loops via dev-libs/libev
net-misc/streamtuner:shout - Enable shoutcast plug-in.
net-misc/streamtuner:xiph - Enable xiph.org plug-in.
net-misc/stunnel:stunnel3 - Install the stunnel3 wrapper.
net-misc/sunshine:cuda - Enable accelerated video encoding on NVIDIA hardware
net-misc/sunshine:libdrm - Enable video encoding via x11-libs/libdrm
net-misc/sunshine:svt-av1 - Enables software AV1 encoding via media-libs/svt-av1
net-misc/sunshine:trayicon - Enable system tray icon
net-misc/sunshine:x264 - Enable software H.264 encoding via media-libs/x264
net-misc/sunshine:x265 - Enable software HEVC encoding via media-libs/x265
net-misc/tigervnc:dri3 - Build with DRI3 support
net-misc/tigervnc:drm - Build with DRM support
net-misc/tigervnc:java - Build TigerVNC Java viewer
net-misc/tigervnc:server - Build TigerVNC server
net-misc/tigervnc:viewer - Build TigerVNC viewer
net-misc/tinyssh:sodium - Use dev-libs/libsodium for cryptography
net-misc/turbovnc:server - Build the server (vncserver, Xvnc)
net-misc/turbovnc:viewer - Build the viewer (vncviewer)
net-misc/uftp:server - Install uftp server daemon
net-misc/vde:pcap - Enable the pcap-based plugin that allows creating a switch against a real interface.
net-misc/wget:cookie-check - Enable cookie checks via net-libs/libpsl
net-misc/wget:libproxy - Support for automatic proxy configuration management through net-libs/libproxy.
net-misc/wget:metalink - Enable support for media-libs/libmetalink
net-misc/wget:ntlm - Enable support for NTLM (Windows-based) authorization
net-misc/wget:uuid - Generate UUIDs for the WARC (Web ARChive file format) using libuuid; otherwise use a simple RNG (random number generator)
net-misc/wget2:gpgme - Build app-crypt/gpgme backend
net-misc/wget2:openssl - Enable crypto support via dev-libs/openssl
net-misc/wget2:psl - Use public suffix list via net-libs/libpsl
net-misc/whois:xcrypt - Enable crypt through sys-libs/libxcrypt package
net-misc/x2goserver:fuse - Use net-fs/sshfs to allow shared folders
net-misc/xmrig:donate - Set the default donation level to 1% instead of 0
net-misc/xmrig:hwloc - Use sys-apps/hwloc for CPU affinity support
net-misc/youtube-viewer:gtk - Install the gtk3 GUI
net-misc/ytfzf:minimal - Skip all optional dependencies (may no longer work out-of-the-box and require custom setting up)
net-misc/ytfzf:thumbnails - Pull media-gfx/ueberzugpp or media-gfx/ueberzug for viewing thumbnails (default method when using -t)
net-misc/zerotier:sso - Enable support for Single sign-on through zeroidc
net-nds/389-ds-base:accountpolicy - Enable account policy plugin - automatically lock an account after a certain amount of time has elapsed
net-nds/389-ds-base:auto-dn-suffix - Enable auto bind with auto dn suffix over unix domain socket (LDAPI) support
net-nds/389-ds-base:autobind - Enable auto bind over unix domain socket (LDAPI) support
net-nds/389-ds-base:bitwise - Enable bitwise plugin - supported data in raw/bitwise format
net-nds/389-ds-base:dna - Enable dna (distributed numeric assignment ) plugin - to automatically assign unique uid numbers to new user entries as they are created.
net-nds/389-ds-base:ldapi - Enable LDAP over unix domain socket (LDAPI) support
net-nds/389-ds-base:pam-passthru - Enable pam-passthru plugin - for simple and fast system services used in ldap
net-nds/ldapvi:gnutls - Use net-libs/gnutls instead of dev-libs/openssl
net-nds/nsscache:nsscache - Depend on sys-auth/libnss-cache to handle flat files
net-nds/nsscache:s3 - Support for S3-based NSS sources
net-nds/openldap:argon2 - Enable password hashing algorithm from app-crypt/argon2
net-nds/openldap:autoca - Automatic Certificate Authority overlay
net-nds/openldap:cleartext - Enable use of cleartext passwords
net-nds/openldap:experimental - Enable experimental backend options
net-nds/openldap:kinit - Enable support for kerberos init
net-nds/openldap:minimal - Build libraries & userspace tools only. Does not install any server code
net-nds/openldap:odbc - Enable ODBC and SQL backend options
net-nds/openldap:overlays - Enable contributed OpenLDAP overlays
net-nds/openldap:pbkdf2 - Enable support for pbkdf2 passwords
net-nds/openldap:sha2 - Enable support for pw-sha2 password hashes
net-nds/openldap:smbkrb5passwd - Enable overlay for syncing ldap, unix and lanman passwords
net-nds/rpcbind:remotecalls - Enable remote calls
net-nds/rpcbind:warmstarts - Enables rpcbind to cache configuration for warm restarts
net-news/rssguard:libmpv - Enable media player support via libmpv from media-video/mpv
net-news/rssguard:qtmultimedia - Enable media player support via dev-qt/qtmultimedia
net-news/rssguard:webengine - Use dev-qt/qtwebengine for embedded web browser
net-news/sfeed:theme-mono - Use mono theme
net-news/sfeed:theme-mono-highlight - Use mono_highlight theme
net-news/sfeed:theme-newsboat - Use newsboat theme
net-news/sfeed:theme-templeos - Use templeos theme
net-nntp/nzbget:parcheck - Enable support for checking PAR archives
net-nntp/slrn:canlock - Add support for cancel locks via net-libs/canlock
net-nntp/slrn:uudeview - Add support for yEnc coding and more using dev-libs/uulib
net-nntp/tin:cancel-locks - Enable Cancel-Lock header functionality
net-nntp/tin:gpg - Enable app-crypt/gnupg support
net-nntp/tin:libtls - Prefer dev-libs/libretls as SSL/TLS provider (ineffective with USE=-ssl)
net-p2p/airdcpp-webclient:nat-pmp - Enable support for the NAT-PMP protocol
net-p2p/airdcpp-webclient:tbb - Enable support of the TBB library to improve performance
net-p2p/airdcpp-webclient:webui - Enable the Web UI
net-p2p/amule:daemon - Enable amule daemon
net-p2p/amule:remote - Enable remote controlling of the client
net-p2p/amule:stats - Enable statistic reporting
net-p2p/bitcoin-core:berkdb - Support legacy wallets in Berkeley DB format
net-p2p/bitcoin-core:bitcoin-cli - Build and install bitcoin-cli command line interface
net-p2p/bitcoin-core:cli - Build and install bitcoin-cli command line interface
net-p2p/bitcoin-core:daemon - Build and install bitcoind daemon
net-p2p/bitcoin-core:external-signer - Include support for external wallet signer programs
net-p2p/bitcoin-core:gui - Build and install Bitcoin-Qt GUI
net-p2p/bitcoin-core:libs - Build and install libbitcoinconsensus
net-p2p/bitcoin-core:nat-pmp - Enable NAT-PMP port forwarding
net-p2p/bitcoin-core:qrcode - Enable generation of QR Codes for receiving payments
net-p2p/bitcoin-core:sqlite - Support descriptor wallets in SQLite format
net-p2p/bitcoin-core:system-leveldb - Link with virtual/bitcoin-leveldb rather than embedding an internal copy
net-p2p/bitcoin-core:system-libsecp256k1 - Link with dev-libs/libsecp256k1 rather than embedding an internal copy
net-p2p/bitcoin-core:systemtap - Enable SystemTap/DTrace tracing
net-p2p/bitcoin-core:test-full - Run tests that take a long time
net-p2p/bitcoin-core:upnp - Enable Universal Plug and Play
net-p2p/bitcoin-core:zeromq - Report blocks and transactions via zeromq
net-p2p/bitcoin-qt:external-signer - Include support for external wallet signer programs
net-p2p/bitcoin-qt:nat-pmp - Enable NAT-PMP port forwarding
net-p2p/bitcoin-qt:qrcode - Enable generation of QR Codes for receiving payments
net-p2p/bitcoin-qt:systemtap - Enable SystemTap/DTrace tracing
net-p2p/bitcoin-qt:upnp - Enable Universal Plug and Play
net-p2p/bitcoin-qt:wallet - Enable wallet support
net-p2p/bitcoin-qt:zeromq - Report blocks and transactions via zeromq
net-p2p/bitcoind:external-signer - Include support for external wallet signer programs
net-p2p/bitcoind:nat-pmp - Enable NAT-PMP port forwarding
net-p2p/bitcoind:systemtap - Enable SystemTap/DTrace tracing
net-p2p/bitcoind:upnp - Enable Universal Plug and Play
net-p2p/bitcoind:wallet - Enable wallet support
net-p2p/bitcoind:zeromq - Report blocks and transactions via zeromq
net-p2p/dbhub:switch-user - Enable support for switching user
net-p2p/deluge:console - Enable default console UI
net-p2p/deluge:webinterface - Install dependencies needed for the web interface
net-p2p/eiskaltdcpp:cli - Enable sample cli based on readline
net-p2p/eiskaltdcpp:daemon - Enable eiskaltdcpp-daemon
net-p2p/eiskaltdcpp:dht - Enable DHT (distributed hash table) support for libeiskaltdcpp
net-p2p/eiskaltdcpp:libcanberra - Enable sound notifications support over libcanberra in EiskaltDC++ Gtk
net-p2p/eiskaltdcpp:minimal - Don't install headers
net-p2p/fms:frost - Add support for frost boards
net-p2p/fms:ssl - Add support for FCP connection over SSL
net-p2p/freenet:nss - Use nss for crypto operations, if it is the fastest way
net-p2p/go-ethereum:devtools - Build Ethereum development tools (evm, abigen, puppeth, ...)
net-p2p/ktorrent:bwscheduler - Schedule upload and download limits over a period of a week
net-p2p/ktorrent:downloadorder - Specify the download order of a multi-file torrent
net-p2p/ktorrent:infowidget - Displays general information about a torrent in several tabs
net-p2p/ktorrent:ipfilter - Filter IP addresses through a blocklist
net-p2p/ktorrent:logviewer - Displays the logging output
net-p2p/ktorrent:magnetgenerator - Generates magnet URI's
net-p2p/ktorrent:mediaplayer - Phonon-based media player
net-p2p/ktorrent:rss - Syndication plugin for KTorrent, supporting RSS and Atom feeds
net-p2p/ktorrent:scanfolder - Scan folders for torrent files and load them
net-p2p/ktorrent:shutdown - Shutdown when done
net-p2p/ktorrent:stats - Shows statistics about torrents in several graphs
net-p2p/ktorrent:upnp - Forward ports using UPnP
net-p2p/ktorrent:webengine - Embedded search for torrents using dev-qt/qtwebengine
net-p2p/ktorrent:zeroconf - Discover peers on the local network using the Zeroconf protocol
net-p2p/mldonkey:bittorrent - enable bittorrent support
net-p2p/mldonkey:fasttrack - enable fasttrack support
net-p2p/mldonkey:gnutella - enable gnutella and gnutella2 support
net-p2p/mldonkey:guionly - enable client build only
net-p2p/qbittorrent:webui - Install qBittorrent Web UI (qbittorrent-nox) and systemd/OpenRC service
net-p2p/retroshare:cli - Enables terminal login support for retroshare-service
net-p2p/retroshare:jsonapi - Enables the new RetroShare JSON API
net-p2p/retroshare:libupnp - Enables UPnP port forwarding via net-libs/libupnp
net-p2p/retroshare:miniupnp - Enables UPnP port forwarding via net-libs/miniupnpc
net-p2p/retroshare:plugins - Enables plugin support
net-p2p/retroshare:service - Enables the new RetroShare service
net-p2p/retroshare:sqlcipher - Enables GXS database encryption via SQLCipher
net-p2p/syncthing:tools - Install stdiscosrv, strelaysrv and other tools to /usr/libexec/syncthing/.
net-p2p/transmission:cli - Build command-line client
net-p2p/transmission:debug - Enable assertions
net-p2p/transmission:mbedtls - Use mbed TLS instead of OpenSSL
net-p2p/transmission-remote-gtk:libproxy - Use net-libs/libproxy for getting the HTTP/HTTPS/SOCKS proxy configuration.
net-print/cups:openssl - Use dev-libs/openssl instead of net-libs/gnutls for TLS support
net-print/cups-filters:foomatic - Build the included foomatic-rip printer driver. Strongly recommended.
net-print/cups-filters:pclm - Enable PCLm support
net-print/cups-meta:browsed - Include support for the cups-browsed daemon.
net-print/cups-meta:foomatic - Include support for the foomatic-rip printer driver. Strongly recommended.
net-print/cups-meta:poppler - Include support for the app-text/poppler filters.
net-print/dymo-cups-drivers:usb-modeswitch - Include usb_modeswitch for some hardware (bug #601242)
net-print/fax4cups:efax - Install net-misc/efax backend
net-print/fax4cups:hylafax - Install net-misc/hylafax backend
net-print/fax4cups:mgetty-fax - Install net-dialup/mgetty backend
net-print/hplip:X - Enables scanner GUI dependencies with USE="scanner" where media-gfx/xsane is preferred over media-gfx/sane-frontends
net-print/hplip:fax - Enable fax on multifunction devices which support it
net-print/hplip:hpcups - Build the hpcups driver for cups (by HP)
net-print/hplip:hpijs - Build the IJS driver for cups (Foomatic)
net-print/hplip:kde - Enables kde-misc/skanlite as scanner GUI with USE="scanner X"
net-print/hplip:libusb0 - Depend on virtual/libusb SLOT 0. Some old printers do not work with virtual/libusb SLOT 1.
net-print/hplip:minimal - Only build internal hpijs/hpcups driver (not recommended at all, make sure you know what you are doing)
net-print/hplip:parport - Enable parallel port for devices which require it
net-print/hplip:scanner - Enable scanner on multifunction devices which support it
net-print/hplip:snmp - Add support for net-analyzer/net-snmp which enables this driver to work over networks (both for server and client)
net-print/hplip:static-ppds - Use statically-generated PPDs instead of Dynamic PPDs. Although this is deprecated some printers may still need it to work properly. Use this flag if hp-setup fails to find/create a valid PPD file
net-print/hplip-plugin:orblite - Install the ORBlite scanner plugin
net-print/kyocera-1x2x-mfp-driver:rastertokpsl-fix - Use custom wrapper script to sanitize arguments before passing to 'rastertokpsl' filter program
net-print/libcupsfilters:poppler - Build the pdftoraster filter
net-print/libppd:poppler - Use the app-text/poppler pdftops filter
net-proxy/haproxy:51degrees - Device Detection using 51 Degrees
net-proxy/haproxy:net_ns - Enable network namespace support (CONFIG_NET_NS)
net-proxy/haproxy:pcre-jit - Use JIT support for PCRE
net-proxy/haproxy:prometheus-exporter - Also build the prometheus exporter
net-proxy/haproxy:slz - Use dev-libs/libslz compression library
net-proxy/haproxy:tools - Install additional tools (halog, iprange)
net-proxy/haproxy:wurfl - Device Detection using WURFL
net-proxy/privoxy:brotli - Decompress brotli compressed data using app-arch/brotli before filtering
net-proxy/privoxy:client-tags - Enable support for client-specific tags
net-proxy/privoxy:compression - Allow privoxy to compress buffered content before sending to the client, if it supports it
net-proxy/privoxy:editor - Enable the web-based actions file editor
net-proxy/privoxy:extended-host-patterns - Enable and require PCRE syntax in host patterns. You must convert action files to PCRE, see privoxy-url-pattern-translator.pl (see tools USE flag). Use at your own risk!
net-proxy/privoxy:extended-statistics - Gather extended statistics
net-proxy/privoxy:external-filters - Allow to filter content with scripts and programs. Experimental
net-proxy/privoxy:fast-redirects - Support fast redirects
net-proxy/privoxy:force - Allow single-page disable (force load)
net-proxy/privoxy:fuzz - Exposes Privoxy internals to input from files or stdout. Intended for fuzzing testing
net-proxy/privoxy:graceful-termination - Allow to shutdown Privoxy through the webinterface
net-proxy/privoxy:image-blocking - Allows the +handle-as-image action, to send "blocked" images instead of HTML
net-proxy/privoxy:jit - Enable PCRE jit (recommended)
net-proxy/privoxy:lfs - Support large files (>2GB) on 32-bit systems
net-proxy/privoxy:mbedtls - Use net-libs/mbedtls for HTTPS filtering
net-proxy/privoxy:openssl - Use dev-libs/openssl for HTTPS filtering
net-proxy/privoxy:png-images - Use PNG format instead of GIF for built-in images
net-proxy/privoxy:sanitize - Enable asan, msan and usan sanitizers. Your compiler must support them
net-proxy/privoxy:ssl - HTTPS inspection support. Enables privoxy to perform SSL MITM filtering, see docs, use with care
net-proxy/privoxy:stats - Keep statistics
net-proxy/privoxy:threads - Enable POSIX threads. Highly recommended, otherwise both build and run-time features may not work properly.
net-proxy/privoxy:toggle - Support temporary disable toggle via web interface
net-proxy/privoxy:tools - Install log parser, regression tester and user agent generator tools
net-proxy/privoxy:whitelists - Support trust files (white lists)
net-proxy/privoxy:zlib - Decompress zlib compressed data using sys-libs/zlib before filtering
net-proxy/rejik:banlists - Install upstream provided simple banlists
net-proxy/squid:ecap - Adds support for loadable content adaptation modules (http://www.e-cap.org)
net-proxy/squid:esi - Enable ESI for accelerators, will cause squid reverse proxies to be capable of the Edge Acceleration Specification (www.esi.org)
net-proxy/squid:htcp - Enable HTCP protocol
net-proxy/squid:logrotate - Use app-admin/logrotate for rotating logs
net-proxy/squid:qos - Adds support for Quality of Service using netfilter conntrack - see qos_flow directive for more info
net-proxy/squid:ssl-crtd - Adds support for dynamic SSL certificate generation in SslBump environments
net-proxy/squid:tproxy - Enables real Transparent Proxy support for Linux Netfilter TPROXY
net-proxy/squid:wccp - Enable Web Cache Coordination Protocol
net-proxy/squid:wccpv2 - Enable Web Cache Coordination V2 Protocol
net-proxy/tinyproxy:filter-proxy - Enable filtering of domains/URLS
net-proxy/tinyproxy:reverse-proxy - Enable reverse proxying
net-proxy/tinyproxy:transparent-proxy - Enable transparent proxying
net-proxy/tinyproxy:upstream-proxy - Enable upstream proxying
net-proxy/tinyproxy:xtinyproxy-header - Include the X-Tinyproxy header
net-proxy/trojan:mysql - build with MySQL support
net-proxy/trojan:nat - Build with NAT support
net-proxy/trojan:reuseport - Build with SO_REUSEPORT support
net-proxy/trojan:tcpfastopen - Force build with TCP Fast Open support
net-proxy/tsocks:dns - Force DNS queries to use SOCKS server via tcp
net-proxy/tsocks:envconf - Allow TSOCKS_CONF_FILE to specify configuration file
net-proxy/tsocks:server-lookups - Allow hostname resolution _for_ SOCKS servers
net-proxy/tsocks:tordns - Apply tordns patch which allows transparent TORification of the DNS queries
net-voip/mumble:g15 - Enable support for the Logitech G15 LCD (and compatible devices).
net-voip/mumble:pipewire - Enable pipewire support for audio output.
net-voip/mumble:rnnoise - Enable alternative noise suppression option based on RNNoise.
net-voip/murmur:ice - Use dev-libs/Ice to enable remote control capabilities.
net-voip/umurmur:mbedtls - Use net-libs/mbedtls as TLS provider
net-voip/umurmur:shm - Enable shared memory support
net-voip/yate:amrnb - use AMR-NB
net-voip/yate:dahdi - Enable Dahdi driver
net-voip/yate:gsm - use GSM codec
net-voip/yate:ilbc - Enable iLBC codec
net-voip/yate:ilbc-webrtc - Enable iLBC webrtc codec
net-voip/yate:isac-fixed - Enable iSAC fixed codec
net-voip/yate:isac-float - Enable iSAC float codec
net-voip/yate:mysql - use MySQL client library
net-voip/yate:postgres - use Postgress SQL
net-voip/yate:spandsp - use spandsp library
net-voip/yate:speex - use Speex codec
net-voip/yate:tdmcard - Enable TDMV API card driver
net-voip/yate:wanpipe - Enable Wanpipe support
net-voip/yate:wpcard - Enable Wanpipe card driver
net-voip/yate:zaptel - Enable Zaptel driver
net-vpn/eduvpn-common:openvpn - enable support for OpenVPN
net-vpn/eduvpn-common:wireguard - enable support for WireGuard
net-vpn/frp:client - Build and install frp client (frpc)
net-vpn/frp:server - Build and install frp server (frps)
net-vpn/libreswan:dnssec - Use DNSSEC resolver (requires net-dns/unbound)
net-vpn/libreswan:ikev1 - Enable the IKEv1 protocol
net-vpn/networkmanager-sstp:gtk4 - Use gui-libs/gtk for GUI support.
net-vpn/networkmanager-strongswan:gtk4 - Use GTK4 instead of GTK3.
net-vpn/ocserv:otp - Enable support for one-time passwords
net-vpn/openconnect:gssapi - Build GSSAPI support
net-vpn/openconnect:libproxy - Enable proxy support
net-vpn/openconnect:pskc - Enable PSKC file storage of HOTP/TOTP keys
net-vpn/openconnect:stoken - Enable stoken support
net-vpn/openvpn:dco - Enable support for kernel data channel offload
net-vpn/openvpn:down-root - Enable the down-root plugin
net-vpn/openvpn:iproute2 - Enabled iproute2 support instead of net-tools
net-vpn/openvpn:mbedtls - Use mbed TLS as the backend crypto library
net-vpn/openvpn:openssl - Use OpenSSL as the backend crypto library
net-vpn/openvpn:pkcs11 - Enable PKCS#11 smartcard support
net-vpn/openvpn:plugins - Enable the OpenVPN plugin system
net-vpn/ovpn-dco:debug - Enable debug output in dmesg
net-vpn/pptpd:gre-extreme-debug - Log all GRE accepted packets when in debug mode (required if you want upstream support)
net-vpn/strongswan:constraints - Enable advanced X.509 constraint checking plugin
net-vpn/strongswan:dhcp - Enable server support for querying virtual IP addresses for clients from a DHCP server. (IKEv2 only)
net-vpn/strongswan:eap - Enable support for the different EAP modules that are supported
net-vpn/strongswan:farp - Enable faking of ARP responses for virtual IP addresses assigned to clients (IKEv2 only)
net-vpn/strongswan:gcrypt - Enable dev-libs/libgcrypt plugin which provides 3DES, AES, Blowfish, Camellia, CAST, DES, Serpent and Twofish ciphers along with MD4, MD5 and SHA1/2 hash algorithms, RSA and DH groups 1,2,5,14-18 and 22-24(4.4+). Also includes a software random number generator.
net-vpn/strongswan:non-root - Force IKEv1/IKEv2 daemons to normal user privileges. This might impose some restrictions mainly to the IKEv1 daemon. Disable only if you really require superuser privileges.
net-vpn/strongswan:openssl - Enable dev-libs/openssl plugin which is required for Elliptic Curve Cryptography (DH groups 19-21,25,26) and ECDSA. Also provides 3DES, AES, Blowfish, Camellia, CAST, DES, IDEA and RC5 ciphers along with MD2, MD4, MD5 and SHA1/2 hash algorithms, RSA and DH groups 1,2,5,14-18 and 22-24(4.4+) dev-libs/openssl has to be compiled with USE="-bindist".
net-vpn/strongswan:pkcs11 - Enable pkcs11 support
net-vpn/strongswan:strongswan_plugins_addrblock - Enable support for the addrblock crypto plugin
net-vpn/strongswan:strongswan_plugins_aesni - Enable support for Intel AES-NI crypto plugin
net-vpn/strongswan:strongswan_plugins_blowfish - Enable support for the blowfish plugin
net-vpn/strongswan:strongswan_plugins_bypass-lan - Enable support for the bypass-lan plugin
net-vpn/strongswan:strongswan_plugins_ccm - Enable support for the ccm plugin
net-vpn/strongswan:strongswan_plugins_chapoly - Enable ChaCha20/Poly1305 AEAD implementation and ChaCha20 XOF plugin
net-vpn/strongswan:strongswan_plugins_ctr - Enable support for the ctr plugin
net-vpn/strongswan:strongswan_plugins_error-notify - Enable support for the error-notify plugin
net-vpn/strongswan:strongswan_plugins_forecast - Enable multicast and broadcast forwarding plugin
net-vpn/strongswan:strongswan_plugins_gcm - Enable support for the gcm plugin
net-vpn/strongswan:strongswan_plugins_ha - Enable support for the ha plugin
net-vpn/strongswan:strongswan_plugins_ipseckey - Enable support for the ipseckey plugin
net-vpn/strongswan:strongswan_plugins_kdf - Enable support for the kdf plugin
net-vpn/strongswan:strongswan_plugins_led - Enable support for the led plugin
net-vpn/strongswan:strongswan_plugins_lookip - Enable support for the lookip plugin
net-vpn/strongswan:strongswan_plugins_newhope - Enable plugin that allows key exchange based on post-quantum computer New Hope algorithm
net-vpn/strongswan:strongswan_plugins_ntru - Enable support for the ntru plugin
net-vpn/strongswan:strongswan_plugins_padlock - Enable support for the padlock plugin
net-vpn/strongswan:strongswan_plugins_rdrand - Enable support for the rdrand plugin
net-vpn/strongswan:strongswan_plugins_save-keys - Enable plugin that saves IKE and/or ESP keys to files compatible with Wireshark (for debugging)
net-vpn/strongswan:strongswan_plugins_systime-fix - Enable support for the systime-fix plugin
net-vpn/strongswan:strongswan_plugins_unbound - Enable support for the unbound plugin
net-vpn/strongswan:strongswan_plugins_unity - Enable support for the unity plugin
net-vpn/strongswan:strongswan_plugins_vici - Enable support for the vici plugin
net-vpn/strongswan:strongswan_plugins_whitelist - Enable support for the whitelist plugin
net-vpn/strongswan:strongswan_plugins_xauth-noauth - Enable support for the xauth-noauth plugin
net-vpn/tinc:uml - Enable support for User Mode Linux Sockets
net-vpn/tinc:vde - Enable Virtual Distributed Ethernet (VDE) based networking
net-vpn/tor:scrypt - Use app-crypt/libscrypt for the scrypt algorithm
net-vpn/tor:server - Enable tor's relay module so it can operate as a relay/bridge/authority
net-vpn/tor:tor-hardening - Compile tor with hardening on vanilla compilers/linkers
net-vpn/vpnc:resolvconf - Enable support for DNS managing framework net-dns/openresolv
net-vpn/wireguard-modules:debug - Enable verbose debug reporting in dmesg of various WireGuard peer and device information.
net-vpn/wireguard-modules:module - Compile the actual WireGuard kernel module. Most certainly you want this enabled, unless you're doing something strange.
net-vpn/wireguard-modules:module-src - Install the module source code to /usr/src, in case you like building kernel modules yourself.
net-vpn/wireguard-tools:wg-quick - Install the wg-quick(8) helper tool. Most users want to use this.
net-wireless/aic8800:firmware - Install device firmware
net-wireless/aircrack-ng:airdrop-ng - Build airdrop-ng
net-wireless/aircrack-ng:airgraph-ng - Build airgraph-ng
net-wireless/aircrack-ng:experimental - Build the "experimental" tools which may randomly fail to run properly
net-wireless/aircrack-ng:netlink - Use netlink for channel control instead of WEXT
net-wireless/bladerf:tecla - use libtecla for command line editing, tab completion, and history
net-wireless/bladerf-fpga:x115 - bitstream for the x115 kLE Cyclone IV FPGA bladerf model"
net-wireless/bladerf-fpga:x40 - bitstream for the x40 kLE Cyclone IV FPGA bladerf model"
net-wireless/bladerf-fpga:xA4 - bitstream for the xA4 49 kLE Cyclone V FPGA bladerf 2.0 micro model"
net-wireless/bladerf-fpga:xA9 - bitstream for the xA9 301 kLE Cyclone V FPGA bladerf 2.0 micro model"
net-wireless/blueman:network - Add functionality to setup (host) PAN connections using either net-dns/dnsmasq or net-misc/dhcp
net-wireless/bluez:btpclient - Enable BTP client
net-wireless/bluez:deprecated - Build deprecated plugins
net-wireless/bluez:experimental - Build experimental plugins
net-wireless/bluez:extra-tools - Install tools that upstream doesn't install on purpose by default. All this tools shouldn't be used. Then, please notify upstream about you still need them to let them know the situation.
net-wireless/bluez:mesh - Add support for Bluetooth Mesh control application and advertising bearer.
net-wireless/bluez:midi - Enable MIDI support
net-wireless/bluez:obex - Enable OBEX transfer support
net-wireless/bluez:test-programs - Install tools for testing of various Bluetooth functions
net-wireless/dump1090:bladerf - Build with Nuand BladeRF support
net-wireless/dump1090:hackrf - Build with Great Scott Gadgets HackRF support
net-wireless/dump1090:minimal - Exclude all HTML/webserver extras for a tiny build, e.g. to export data only
net-wireless/dump1090:rtlsdr - Build with Realtek RTL2832U (rtlsdr) support
net-wireless/gnome-bluetooth:sendto - Build the bluetooth-sendto application to send files to various locations/devices
net-wireless/gnuradio:analog - enable analog signal processing blocks
net-wireless/gnuradio:audio - enable blocks to connect to audio sources (mic-in) and sinks (speaker-out) ports on a computer
net-wireless/gnuradio:channels - enable channel mode blocks
net-wireless/gnuradio:ctrlport - enable control port interface
net-wireless/gnuradio:digital - enable digital signal processing blocks
net-wireless/gnuradio:dtv - enable digital tv signal processing blocks
net-wireless/gnuradio:fec - enable block for convolutional encoding using the CCSDS standard polynomial ("Voyager")
net-wireless/gnuradio:filter - enable filter signal processing blocks
net-wireless/gnuradio:grc - enable GNU Radio Companion graphical tool to design signal processing flow graphs
net-wireless/gnuradio:iio - enable enable support for IIO devices
net-wireless/gnuradio:modtool - enable modtool for editing GNU Radio modules and components
net-wireless/gnuradio:network - enable block for networking support
net-wireless/gnuradio:performance-counters - enable block performance counters
net-wireless/gnuradio:soapy - enable support for SoapySDR blocks
net-wireless/gnuradio:trellis - enable trellis blocks for FSM
net-wireless/gnuradio:uhd - install UHD source and sink blocks
net-wireless/gnuradio:utils - install scripts to enable viewing and analysis of files produced by flow graphs
net-wireless/gnuradio:vocoder - enable blocks for audio voice encoders
net-wireless/gnuradio:wavelet - enable wavelet signal processing blocks
net-wireless/gnuradio:zeromq - enable zeromq message passing blocks
net-wireless/gqrx:gr-audio - Use audio support from net-wireless/gnuradio
net-wireless/gr-osmosdr:airspy - Build with Airspy support through net-wireless/airspy
net-wireless/gr-osmosdr:bladerf - Build with Nuand BladeRF support through net-wireless/bladerf
net-wireless/gr-osmosdr:hackrf - Build with Great Scott Gadgets HackRF support through net-libs/libhackrf
net-wireless/gr-osmosdr:iqbalance - Enable support for I/Q balancing using gr-iqbal through net-wireless/gr-iqbal
net-wireless/gr-osmosdr:rtlsdr - Build with Realtek RTL2832U support through net-wireless/rtl-sdr
net-wireless/gr-osmosdr:sdrplay - Enable support for SDRplay devices through net-wireless/sdrplay
net-wireless/gr-osmosdr:soapy - Build with SoapySDR support through net-wireless/soapysdr
net-wireless/gr-osmosdr:uhd - Build with Ettus Research USRP Hardware Driver support through net-wireless/uhd
net-wireless/gr-osmosdr:xtrx - Build with xtrx Hardware Driver support through net-wireless/libxtrx
net-wireless/horst:pcap - Add support for network packet capture via net-libs/libpcap
net-wireless/hostapd:internal-tls - Use internal TLSv1 implementation instead of depending on OpenSSL or GnuTLS
net-wireless/hostapd:netlink - Adding support for using netlink to create VLANs
net-wireless/hostapd:suiteb - Adding support for NSA Suite B Cryptography
net-wireless/hostapd:wps - Add support for Wi-Fi Protected Setup
net-wireless/iwd:client - Enable iwctl client tool
net-wireless/iwd:monitor - Enable iwmon monitor tool
net-wireless/iwd:ofono - Enable support for oFono SIM authentication
net-wireless/iwd:standalone - Enable standalone mode with built-in DHCP client and DNS handling"
net-wireless/iwd:systemd - Use systemd-resolve rather than resolvconf for DNS handling in standalone mode
net-wireless/iwd:wired - Enable ethernet authentication daemon
net-wireless/kismet:libusb - Support libusb based capture sources such as mousejack, cc2540(ble), and nrf51822(ble)
net-wireless/kismet:mqtt - Enable MQTT support
net-wireless/kismet:pcre - Build with pcre support
net-wireless/kismet:rtlsdr - Enable rtlsdr based kismet capture sources
net-wireless/kismet:suid - Install a setuid root helper binary with limited functionality; this allows running kismet as a normal user, significantly reducing security risks
net-wireless/kismet:ubertooth - Enable capture source for ubertooth to sniff bluetooth low energy
net-wireless/kismet:wext - Enable building kismet with support for the deprecated Linux Wireless Extensions. This is required for some out of tree and staging drivers, and kismet has not been well tested with it disabled, so it defaults to on.
net-wireless/libxtrxll:usb3380 - support xtrx usb model
net-wireless/neard:tools - Build and install 'nfctool' for further NFC debugging
net-wireless/rtl-sdr:zerocopy - may cause a bus error on some ARM systems
net-wireless/rtl_433:rtlsdr - Build with Realtek RTL2832U (rtlsdr) support
net-wireless/rtl_433:soapysdr - Build with SoapySDR support
net-wireless/soapysdr:bladerf - Add support for bladerf hardware
net-wireless/soapysdr:hackrf - Add support for hackrf hardware
net-wireless/soapysdr:plutosdr - Add support for Analog Devices ADALM-PLUTO hardware
net-wireless/soapysdr:rtlsdr - Add support for rtlsdr hardware
net-wireless/soapysdr:uhd - Add support for Ettus USRP hardware
net-wireless/ubertooth:bluez - use bluez to support clock following and scanning
net-wireless/ubertooth:ubertooth1-firmware - Build/install ubertooth1-firmware
net-wireless/uhd:b100 - support B100 hardware
net-wireless/uhd:b200 - support B200, B210, B200mini, B205mini hardware
net-wireless/uhd:e300 - support E300, E310 hardware
net-wireless/uhd:mpmd - support N300, N310 hardware
net-wireless/uhd:octoclock - Octoclock Network Support
net-wireless/uhd:usrp1 - support USRP1 hardware
net-wireless/uhd:usrp2 - support USRP2, N200, N210 hardware
net-wireless/uhd:utils - utilities needed to list, query, calibrate, or update FPGA/Firmware
net-wireless/uhd:x300 - support X300, X310 hardware
net-wireless/unifi:system-mongodb - Using dev-db/mongodb systemd service instead of the bundled one
net-wireless/urh:airspy - use native backend which directly uses net-wireless/airspy
net-wireless/urh:audio - use a soundcard instead of an sdr
net-wireless/urh:bladerf - use native backend which directly uses net-wireless/bladerf
net-wireless/urh:hackrf - use native backend which directly uses net-libs/libhackrf
net-wireless/urh:limesdr - use native backend which directly uses net-wireless/limesuite
net-wireless/urh:plutosdr - use native backend which directly uses net-libs/libiio
net-wireless/urh:rtlsdr - use native backend which directly uses net-wireless/rtl-sdr
net-wireless/urh:sdrplay - use native backend which directly uses net-wireless/sdrplay
net-wireless/urh:uhd - use native backend which directly uses net-wireless/uhd
net-wireless/wepattack:john - Build with app-crypt/johntheripper support
net-wireless/wireless-tools:multicall - Build the most commonly used tools as one binary
net-wireless/wpa_supplicant:ap - Add support for access point mode
net-wireless/wpa_supplicant:broadcom-sta - Flag to help users disable features not supported by broadcom-sta driver
net-wireless/wpa_supplicant:eap-sim - Add support for EAP-SIM authentication algorithm
net-wireless/wpa_supplicant:eapol-test - Build and install eapol_test binary
net-wireless/wpa_supplicant:fasteap - Add support for FAST-EAP authentication algorithm
net-wireless/wpa_supplicant:fils - Add support for Fast Initial Link Setup (802.11ai)
net-wireless/wpa_supplicant:hs2-0 - Add support for 802.11u and Passpoint for HotSpot 2.0
net-wireless/wpa_supplicant:macsec - Add support for wired macsec
net-wireless/wpa_supplicant:mbo - Add support Multiband Operation
net-wireless/wpa_supplicant:mesh - Add support for mesh mode
net-wireless/wpa_supplicant:p2p - Add support for Wi-Fi Direct mode
net-wireless/wpa_supplicant:privsep - Enable wpa_priv privledge separation binary
net-wireless/wpa_supplicant:ps3 - Add support for ps3 hypervisor driven gelic wifi
net-wireless/wpa_supplicant:smartcard - Add support for smartcards
net-wireless/wpa_supplicant:tdls - Add support for Tunneled Direct Link Setup (802.11z)
net-wireless/wpa_supplicant:tkip - Add support for WPA TKIP (deprecated due to security flaws in 2009)
net-wireless/wpa_supplicant:uncommon-eap-types - Add support for GPSK, SAKE, GPSK_SHA256, IKEV2 and EKE
net-wireless/wpa_supplicant:wep - Add support for Wired Equivalent Privacy (deprecated due to security flaws in 2004)
net-wireless/wpa_supplicant:wimax - Add support for Wimax EAP-PEER authentication algorithm
net-wireless/wpa_supplicant:wps - Add support for Wi-Fi Protected Setup
sci-astronomy/cpl:gasgano - Enable support for sci-astronomy/gasgano file organizer
sci-astronomy/kstars:password - Store passwords securely via dev-libs/qtkeychain
sci-astronomy/kstars:wcs - Enable support for World Coordinate System library using wcslib
sci-astronomy/psfex:plplot - Build with sci-libs/plplot to allow diagnostic plots during processing
sci-astronomy/scamp:plplot - Build with sci-libs/plplot to allow diagnostic plots during processing
sci-astronomy/sextractor:modelfit - Enable profile model fitting, needs sci-libs/atlas and sci-libs/fftw
sci-astronomy/siril:libconfig - Require dev-libs/libconfig to read old configuration files
sci-astronomy/siril:wcs - Add supprt astrometry features using sci-astronomy/wcslib
sci-astronomy/stellarium:deep-sky - Install extra deep sky objects catalog (may affect performance)
sci-astronomy/stellarium:lens-distortion - Enable lens distortion estimator plugin
sci-astronomy/stellarium:libcxx - Use external libraries for STL features not available in libc++
sci-astronomy/stellarium:media - Enable sound and video support
sci-astronomy/stellarium:scripting - Enable JS scripting via dev-qt/qtscript in Qt5 or using Qml via dev-qt/qtdeclarative in Qt6
sci-astronomy/stellarium:show-my-sky - Enable a better atmosphere model via sci-astronomy/calcmysky
sci-astronomy/stellarium:stars - Install extra star catalogs
sci-astronomy/stellarium:telescope - Enable telescope control via sci-libs/indilib
sci-astronomy/stellarium:webengine - Show online results about the selected star in an embedded window using dev-qt/qtwebengine
sci-astronomy/stellarium:xlsx - Support XLSX (Excel) files via dev-libs/qxlsx
sci-astronomy/swarp:cfitsio - Link with sci-libs/cfitsio
sci-astronomy/wcslib:fits - Enable support for the FITS format through sci-libs/cfitsio
sci-astronomy/wcslib:pgplot - Builds PGBSOX routines, needs sci-libs/pgplot library
sci-astronomy/wcslib:tools - Builds and installs extra command line utilities for WCS checking
sci-biology/abyss:misc-haskell - build abyss-samtobreak tool, pull in haskell toolchain
sci-biology/bioperl:db - Install sci-biology/bioperl-run
sci-biology/bioperl:network - Install sci-biology/bioperl-run
sci-biology/bioperl:run - Install sci-biology/bioperl-run
sci-biology/clustalw-mpi:mpi-njtree - Use MPI (as opposed to serial) code for computing neighbor-joining trees
sci-biology/clustalw-mpi:static-pairalign - Use static (as opposed to dynamic) scheduling for pair alignments
sci-biology/exonerate:utils - Install the follow binaries: esd2esi, fasta2esd, fastaannotatecdna, fastachecksum, fastaclean, fastaclip, fastacomposition, fastadiff, fastaexplode, fastafetch, fastahardmask, fastaindex, fastalength, fastanrdb, fastaoverlap, fastareformat, fastaremove, fastarevcomp, fastasoftmask, fastasort, fastasplit, fastasubseq, fastatranslate, fastavalidcds
sci-biology/fasttree:double-precision - use double precision instead of single-precision floating point (2x memroy required)
sci-biology/mcl:blast - Add support for NCBI BLAST data
sci-biology/mothur:boost - Depend on dev-libs/boost for make.contigs to read .gz compressed files.
sci-biology/mothur:gsl - Use sci-libs/gsl to support diversity estimates for estimiator.single.
sci-biology/mothur:hdf5 - Support Biom format 2.0 for the biom.info command via sci-libs/hdf5.
sci-biology/newick-utils:xml - Uses dev-libs/libxml2 to handle ornaments
sci-biology/ucsc-genome-browser:server - Install genome browser Web application. If this flag is off, only libraries and utilities from the suite are installed.
sci-biology/yass:dmalloc - Enable debugging with the dmalloc library
sci-biology/yass:lowmem - Build for environments with low amounts of memory
sci-calculators/datamash:linux-crypto - Use Linux kernel cryptographic API
sci-calculators/datamash:openssl - Use dev-libs/openssl for hash routines instead of internal gnulib
sci-calculators/units:units-cur - Install the units_cur python script that updates currencies
sci-chemistry/avogadro2:rpc - Enable RPC server
sci-chemistry/avogadro2:vtk - include vtk support
sci-chemistry/chemtool:emf - EMF export support
sci-chemistry/gnome-chemistry-utils:gnumeric - Add a Gnumeric plugin to provide a molarmass function for the spreadsheet
sci-chemistry/gromacs:build-manual - Build manual instead of downloading it
sci-chemistry/gromacs:clang - Build gromacs with Clang instead of default compiler
sci-chemistry/gromacs:clang-cuda - Use clang for cuda units compilation
sci-chemistry/gromacs:cuda - Enable cuda non-bonded kernels
sci-chemistry/gromacs:double-precision - More precise calculations at the expense of speed
sci-chemistry/gromacs:gmxapi - Add support for gmxapi library
sci-chemistry/gromacs:gmxapi-legacy - Enable installing lagacy headers
sci-chemistry/gromacs:hwloc - Enable HWLoc lib support
sci-chemistry/gromacs:lmfit - Use external sci-libs/lmfit
sci-chemistry/gromacs:mkl - Use sci-libs/mkl for fft, blas, lapack routines
sci-chemistry/gromacs:nnpot - Allow to use sci-libs/caffe2 for NN Potentials
sci-chemistry/gromacs:offensive - Enable gromacs partly offensive quotes
sci-chemistry/gromacs:opencl - Enable opencl non-bonded kernels
sci-chemistry/gromacs:single-precision - Single precision version of gromacs (default)
sci-chemistry/gromacs:tng - Enable new trajectory format - tng
sci-chemistry/molequeue:client - Build the client application
sci-chemistry/molequeue:server - Build the serve application
sci-chemistry/molequeue:zeromq - Build with net-libs/zeromq support
sci-chemistry/openbabel:inchi - Build support for IUPAC International Chemical Identifier format
sci-chemistry/openbabel:json - Build support for JSON formats (ChemDoodle, PubChem, etc...)
sci-chemistry/pymol:web - Install Pymodule needed for web app support
sci-chemistry/raster3d:gd - libgd support for PNG and JPEG output
sci-chemistry/vmd:gromacs - Add support for TNG file format
sci-chemistry/vmd:msms - Add support for MSMS SES calcualtion tool
sci-chemistry/vmd:povray - Add support for povray raytracer for HQ images
sci-chemistry/vmd:tachyon - Add support for tachyon raytracer for HQ images
sci-chemistry/votca:gromacs - Add support for gromacs file formats through sci-chemistry/gromacs
sci-electronics/gerbv:unit-mm - Set default unit for coordinates in status bar to mm
sci-electronics/ghdl:llvm - Build LLVM code generator
sci-electronics/gtkwave:fasttree - Enables experimental Fast SST Tree widget code.
sci-electronics/gtkwave:fatlines - Renders lines as double width in gtkwave.
sci-electronics/gtkwave:judy - Enables Judy array support.
sci-electronics/gtkwave:packed - Enables '#pragma pack' for data arrays (saves memory, costs time).
sci-electronics/kicad-meta:minimal - Do not install extra data like 3D packages and templates.
sci-electronics/ktechlab:gpsim - Enable support for Microchip PIC microcontrollers similation using dev-embedded/gpsim
sci-electronics/librepcb:opencascade - Build with sci-libs/opencascadethe 3D features (e.g. reading/writing STEP files)
sci-electronics/ngspice:deprecated - Build old and deprecated apps
sci-electronics/ngspice:shared - Build ngspice as a shared library
sci-electronics/nvc:llvm - Build LLVM code generator
sci-electronics/pcb:gcode - gcode file export
sci-electronics/pcb:gif - GIF graphics export
sci-electronics/pcb:gsvit - GSvit file export
sci-electronics/pcb:jpeg - JPEG graphics export
sci-electronics/pcb:m4lib-png - Enable creating png previews for the m4 library
sci-electronics/pcb:nelma - NELMA file export
sci-electronics/pcb:png - PNG graphics export
sci-electronics/pcb:tk - Build tcl/tk graphical QFP footprint generator
sci-electronics/pcb:toporouter - Build toporouter
sci-electronics/pulseview:decode - Enable decoding of protocols while capturing
sci-electronics/sigrok-cli:decode - Enable decoding of protocols while capturing
sci-electronics/splat:hires - Builds additional high resolution application 'rfsplat-hd'
sci-geosciences/gmt:gdal - Enable sci-libs/gdal library support
sci-geosciences/gmt:geos - Enable sci-libs/geos library support
sci-geosciences/gmt:gmttria - Non GNU triangulation method, more efficient
sci-geosciences/gpsd:dbus - export gpsd data over dbus connections
sci-geosciences/gpsd:latency-timing - support latency timing information
sci-geosciences/gpsd:ntp - Enable net-misc/ntp shared memory interface and PPS kernel support for GPS time
sci-geosciences/gpsd:shm - export gpsd over shared memory
sci-geosciences/gpsd:sockets - export gpsd over unix sockets
sci-geosciences/grass:geos - Use sci-libs/geos for v.buffer and adds extended options to the v.select module
sci-geosciences/grass:las - Include support for LAS and LAZ encoded LiDAR files through sci-geosciences/liblas
sci-geosciences/grass:pdal - Enable support for PDAL for point clouds via sci-libs/pdal
sci-geosciences/grass:svm - Enable support for the Support Vector Machine library sci-libs/libsvm
sci-geosciences/gshhs:data - Add earth data with sci-geosciences/gshhs-data
sci-geosciences/liblas:gdal - Add support for the sci-libs/gdal geospatial raster library
sci-geosciences/mapserver:apache - Enable mapserver to run under apache
sci-geosciences/mapserver:geos - Enable sci-libs/geos library support
sci-geosciences/mapserver:postgis - Enable dev-db/postgis support
sci-geosciences/merkaartor:libproxy - Use net-libs/libproxy for getting the HTTP/HTTPS/SOCKS proxy configuration
sci-geosciences/merkaartor:webengine - Enable dev-qt/qtwebengine in some plugins
sci-geosciences/merkaartor:zbar - Enable barcode support in MWalkingPapersBackground/GeoImage via media-gfx/zbar
sci-geosciences/owntracks-recorder:crypt - Enable support for payload encryption with dev-libs/libsodium
sci-geosciences/owntracks-recorder:http - Enable support for the built-in HTTP REST API
sci-geosciences/owntracks-recorder:kill - Enable support removing data via the API (dangerous)
sci-geosciences/owntracks-recorder:lua - Enable support for Lua hook integration
sci-geosciences/owntracks-recorder:mqtt - Enable MQTT support
sci-geosciences/owntracks-recorder:ping - Enable support for the "pingping" monitoring feature
sci-geosciences/owntracks-recorder:tours - Enable recorder support for shared views
sci-geosciences/qgis:3d - Build QGIS 3D library using dev-qt/qt3d
sci-geosciences/qgis:georeferencer - Determines whether georeferencer plugin should be built
sci-geosciences/qgis:grass - Add support for grass
sci-geosciences/qgis:hdf5 - Enable MDAL support for sci-libs/hdf5
sci-geosciences/qgis:mapserver - Determines whether mapserver should be built
sci-geosciences/qgis:netcdf - Enable MDAL support for GRIB and XMDF formats
sci-geosciences/qgis:pdal - Enable support for PDAL for point clouds via sci-libs/pdal
sci-geosciences/qgis:polar - Enable support for the polar coordinate system via x11-libs/qwtpolar
sci-geosciences/qgis:qml - Enable support Qml-based plugins using dev-qt/qtdeclarative
sci-geosciences/qgis:serial - Enable support for serial GPS using dev-qt/qtserialport
sci-geosciences/qgis:webengine - Enable webengine support using dev-qt/qtwebengine
sci-geosciences/viking:geoclue - Use app-misc/geoclue to determine current location
sci-geosciences/viking:libexif - Use media-libs/libexif for EXIF support
sci-geosciences/viking:oauth - Enable OAuth authentication for OSM
sci-libs/ViSP:coin - Enables Coin3D support.
sci-libs/ViSP:demos - Installs demo programs.
sci-libs/ViSP:dmtx - Enables barcode data matrix support.
sci-libs/ViSP:ogre - Enables dev-games/ogre support.
sci-libs/ViSP:opencv - Enables media-libs/opencv support.
sci-libs/ViSP:pcl - Enables sci-libs/pcl support.
sci-libs/ViSP:tutorials - Installs tutorials.
sci-libs/ViSP:zbar - Enables barcodes reading.
sci-libs/XNNPACK:assembly - Build with assembly micro-kernels
sci-libs/XNNPACK:jit - Build with JIT micro-kernels
sci-libs/XNNPACK:memopt - Build with optimized memory allocation scheme
sci-libs/XNNPACK:sparse - Build with graph rewriting for sparse inference
sci-libs/adolc:boost - Use the boost allocator from dev-libs/boost
sci-libs/adolc:sparse - Add support for sparse matrix algebra with sci-libs/colpack
sci-libs/armadillo:arpack - Link with sci-libs/arpack libraries for eigen decomposition
sci-libs/armadillo:mkl - Use matrix allocation from the Intel MKL sci-libs/mkl
sci-libs/armadillo:superlu - Use SuperLU for sparse linear equation solving sci-libs/superlu
sci-libs/arprec:qd - Use sci-libs/qd for quad-double datatype
sci-libs/atlas:generic - Build atlas assuming a fairly generic architecture (sse2 for x86, core2 for amd64)
sci-libs/avogadrolibs:archive - Enable archive support using app-arch/libarchive
sci-libs/avogadrolibs:vtk - Enable sci-libs/vtk support
sci-libs/blis:64bit-index - Enable 64bit array indexing, incompatible with runtime switching
sci-libs/blis:eselect-ldso - Enable runtime library switching by eselect and ld.so.
sci-libs/blis:openmp - Use openmp threadding model
sci-libs/blis:pthread - Use pthread threadding model
sci-libs/blis:serial - Use no threadding model
sci-libs/caffe2:distributed - Support distributed applications
sci-libs/caffe2:fbgemm - Use FBGEMM
sci-libs/caffe2:flash - Enable flash attention
sci-libs/caffe2:gloo - Use sci-libs/gloo
sci-libs/caffe2:mkl - Use sci-libs/mkl for blas, lapack and sparse blas routines
sci-libs/caffe2:nnpack - Use NNPACK
sci-libs/caffe2:numpy - Add support for math operations through numpy
sci-libs/caffe2:onednn - Use oneDNN
sci-libs/caffe2:openblas - Use sci-libs/openblas for blas routines
sci-libs/caffe2:openmp - Use OpenMP for parallel code
sci-libs/caffe2:qnnpack - Use QNNPACK
sci-libs/caffe2:rocm - Enable ROCm gpu computing support
sci-libs/caffe2:xnnpack - Use XNNPACK
sci-libs/cantera:hdf5 - Add HDF5 container files support
sci-libs/cantera:python - Install Python bindings and conversion tools from Chemkin to Cantera format
sci-libs/cddlib:tools - Add a few executables and tests for cddlib
sci-libs/ceres-solver:cxsparse - Enable simple support for sparse matrix algebra from sci-libs/cxsparse with no LAPACK dependencies
sci-libs/ceres-solver:gflags - Use dev-cpp/gflags for flag parsing
sci-libs/ceres-solver:schur - Enable fixed-size schur specializations (disable if binary size is an issue)
sci-libs/ceres-solver:sparse - Enable support for sparse matrix algebra with various packages from SuiteSparse
sci-libs/cfitsio:tools - Build optional utilities (cookbook fitscopy imcopy smem speed testprog fpack funpack)
sci-libs/cgnslib:base-scope - Enable base scoped families or connectivities
sci-libs/cgnslib:legacy - Enable or disable building legacy code (3.0 compatible)
sci-libs/cgnslib:scoping - Enable scoping of enumeration values
sci-libs/cgnslib:tools - A number of utility programs: cgnscheck, cgnscompress, cgnsdiff, cgnslist, cgnsnames, cgnsupdate, cgnsconvert, adf2hdf, hdf2adf.
sci-libs/cholmod:cholesky - Enable sparse Cholesky factorisation
sci-libs/cholmod:matrixops - Support basic sparse and dense matrix operations (add, multiply, scale, et cetera)
sci-libs/cholmod:modify - Enable Cholesky-modification routines like update, downdate, row-add, and row-delete
sci-libs/cholmod:partition - Enable graph partitioning and graph-partition-based orderings through sci-libs/metis (using a bundled fork in 4.0.0+) or sci-libs/parmetis
sci-libs/cholmod:supernodal - supernodal cholesky factorisation
sci-libs/clblas:client - Build a command line clBLAS client program.
sci-libs/clblas:ktest - A command line tool for testing single clBLAS kernel.
sci-libs/clblas:performance - Copy performance scripts that can measure and graph performance.
sci-libs/clblast:client - Enable compilation of the clients to test and compare performance with reference libraries
sci-libs/clblast:cuda - Build with support for cuda instead of opencl (beta!)
sci-libs/coinor-clp:glpk - Enable GNU Linear Programming Kit sci-mathematics/glpk support
sci-libs/coinor-clp:metis - Enable partitioning with sci-libs/metis
sci-libs/coinor-clp:mumps - Enable sci-libs/mumps support
sci-libs/coinor-clp:sparse - Enable support for sparse matrix with sci-libs/cholmod
sci-libs/coinor-cppad:adolc - Add support for ADOL-C (sci-libs/adolc)
sci-libs/coinor-cppad:eigen - Add support for Eigen (dev-cpp/eigen)
sci-libs/coinor-cppad:ipopt - Add support for IPOPT (sci-libs/ipopt)
sci-libs/coinor-symphony:glpk - Enable GNU Linear Programming Kit sci-mathematics/glpk support
sci-libs/coinor-utils:glpk - Enable GNU Linear Programming Kit sci-mathematics/glpk support
sci-libs/dealii:adolc - Adds support for ADOL-C (sci-libs/adolc)
sci-libs/dealii:arborx - Adds support for ARBORX (sci-libs/arborx)
sci-libs/dealii:arpack - Adds support for ARPACK (sci-libs/arpack)
sci-libs/dealii:assimp - Add support for assimp (media-libs/assimp)
sci-libs/dealii:cgal - Adds support for CGAL (sci-mathematics/cgal)
sci-libs/dealii:ginkgo - Add support for ginkgo (sci-libs/ginkgo)
sci-libs/dealii:gmsh - Add support for gmsh (sci-libs/gmsh)
sci-libs/dealii:metis - Add support for metis (sci-libs/metis)
sci-libs/dealii:muparser - Add support for muparser (dev-cpp/muParser)
sci-libs/dealii:opencascade - Add support for opencascade (sci-libs/opencascade)
sci-libs/dealii:p4est - Add support for p4est (sci-libs/p4est)
sci-libs/dealii:petsc - Add support for petsc (sci-mathematics/petsc)
sci-libs/dealii:scalapack - Add support for ScaLAPACK (sci-libs/scalapack)
sci-libs/dealii:slepc - Add support for slepc (sci-mathematics/slepc)
sci-libs/dealii:sparse - Add support for suitesparse (sci-libs/suitesparse)
sci-libs/dealii:sundials - Add support for sundials (sci-libs/sundials)
sci-libs/dealii:symengine - Add support for symengine (sci-libs/symengine)
sci-libs/dealii:trilinos - Add support for trilinos (sci-libs/trilinos)
sci-libs/dlib:cblas - Build with CBLAS virtual/cblas
sci-libs/dlib:cuda - Enable support for CUDA for Deep Neural Networks (cuDNN) on GPU (experimental)
sci-libs/dlib:mkl - Enable support for Intel FFT sci-libs/mkl
sci-libs/dlib:python - Enable support for Python API bindings
sci-libs/dmlc-core:s3 - Support for the Amazon Simple Storage Service
sci-libs/eccodes:defs - Install full set of definition files.
sci-libs/eccodes:extra-test - Install full set of test data (large).
sci-libs/eccodes:memfs - Enable memory based access to definition/sample files (conflicts with tests).
sci-libs/fcl:octomap - OctoMap library support
sci-libs/fcl:profiling - Enable profiling
sci-libs/fftw:zbus - Adds support for ZBus cycle-counter of mips
sci-libs/flann:octave - Add bindings for sci-mathematics/octave
sci-libs/fplll:qd - Use sci-libs/qd for quad-double datatype
sci-libs/gdal:armadillo - Use sci-libs/armadillo for faster TPS transform computation
sci-libs/gdal:fits - Enable support for NASA's sci-libs/cfitsio library
sci-libs/gdal:geos - Add support for geometry engine (sci-libs/geos)
sci-libs/gdal:gml - Enable support for dev-libs/xerces-c C++ API
sci-libs/gdal:ogdi - Enable support for the open geographic datastore interface (sci-libs/ogdi)
sci-libs/gdal:parquet - Enables read/write parquet data format (dev-libs/apache-arrow)
sci-libs/gdal:spatialite - Enable Spatial DBMS over sqlite dev-db/spatialite
sci-libs/gdal:xls - Add the dev-libs/freexl library for xls import support
sci-libs/ginkgo:cuda - Add support for cuda assimp (dev-util/nvidia-cuda-toolkit)
sci-libs/ginkgo:hwloc - Add support for hwloc (sys-apps/hwloc)
sci-libs/gloo:libuv - Enable libuv support
sci-libs/gloo:redis - Enable Redis backend for storage via dev-libs/hiredis
sci-libs/gmsh:alglib - Enable alglib support for mesh optimizers
sci-libs/gmsh:cgns - Enables cgns output support
sci-libs/gmsh:eigen - Build matrix manipulation with dev-cpp/eigen
sci-libs/gmsh:gmm - A simple alternative to petsc based on sci-mathematics/gmm
sci-libs/gmsh:med - Enables med support
sci-libs/gmsh:metis - Enables metis support
sci-libs/gmsh:mumps - Enables mumps solver support
sci-libs/gmsh:netgen - Enable 3D Frontal triangulation using netgen lib
sci-libs/gmsh:opencascade - Enable OpenCASCADE support
sci-libs/gmsh:petsc - Enable sci-mathematics/petsc support
sci-libs/gmsh:shared - Install shared library and headers
sci-libs/gmsh:slepc - Enable sci-mathematics/slepc support
sci-libs/gmsh:voro - Enable support to sci-libs/voro++ meshing
sci-libs/gsl:cblas-external - Link gsl with external cblas provided by (virtual/cblas) instead of shipped internal version
sci-libs/gsl:deprecated - Enable deprecated functions
sci-libs/hdf5:hl - Enable high level API (https://support.hdfgroup.org/HDF5/doc/HL/index.html)
sci-libs/hdf5:unsupported - Enable unsupported combinations of configuration options
sci-libs/hipCUB:benchmark - Build and install benchmark binaries.
sci-libs/hipSOLVER:sparse - Build hipSOLVER with sparse functionality (sci-libs/cholmod)
sci-libs/hypre:int64 - Build the 64 bits integer library
sci-libs/indilib:rtlsdr - Enable support for devices supported by net-wireless/rtl-sdr
sci-libs/indilib:websocket - Enable support for WebSocket protocol
sci-libs/ipopt:asl - AMPL Solver Library support and build the 'ipopt' binary
sci-libs/ipopt:mumps - Enable sci-libs/mumps support
sci-libs/kissfft:alloca - Use alloca(3) instead of malloc(3) for memory management
sci-libs/kissfft:double - Build library for primary data type of double
sci-libs/kissfft:int16 - Build library for primary data type of int16_t
sci-libs/kissfft:int32 - Build library for primary data type of int32_t
sci-libs/kissfft:tools - Build command line tools
sci-libs/lapack:deprecated - Also build deprecated functions
sci-libs/lapack:eselect-ldso - Enable runtime library switching by eselect and ld.so.
sci-libs/lapack:lapacke - Build LAPACKE
sci-libs/lemon:coin - Enable the sci-libs/coinor-clp and sci-libs/coinor-cbc graph algorithms
sci-libs/lemon:glpk - Enable GNU Linear Programming Kit sci-mathematics/glpk support
sci-libs/libccd:double-precision - More precise calculations at the expense of speed
sci-libs/libgeodecomp:hpx - Enables HPX backend
sci-libs/libgeodecomp:opencv - Enables OpenCV related code
sci-libs/libgeodecomp:silo - Enables SILO related code
sci-libs/liborigin:tools - Install opj2dat command line util
sci-libs/libqalculate:hardened - Disable unsafe functions like 'command' and variables like 'uptime'.
sci-libs/libsc:romio - Build with support for the ROMIO MPI-IO component
sci-libs/libsigrok:ftdi - Enable drivers that need dev-embedded/libftdi
sci-libs/libsigrok:hidapi - Enable drivers that need dev-libs/hidapi
sci-libs/libsigrok:nettle - Enable drivers that need dev-libs/nettle
sci-libs/libsigrok:parport - Enable drivers that are parallel (IEEE1284) based
sci-libs/libsigrok:serial - Enable drivers that are serial (RS232) based
sci-libs/libsvm:tools - Install python based tool scripts for data selection and visualization with sci-visualization/gnuplot
sci-libs/linux-gpib:firmware - Install firmware
sci-libs/lis:quad - Enable quadruple precision operations
sci-libs/lis:saamg - Build the Smoothed Aggregation Algebraic MultiGrid preconditioner
sci-libs/mathgl:hdf - Add support for the Hierarchical Data Format v.4 sci-libs/hdf
sci-libs/mathgl:octave - Add bindings for sci-mathematics/octave
sci-libs/matio:sparse - Extend formats for sparse matrix (not matlab)
sci-libs/metis:double-precision - Use double- rather than single-precision floating-point representation
sci-libs/metis:int64 - Use 64- rather than 32-bit integer representation (needed for > 2^31 vertices)
sci-libs/mumps:metis - Enable matrix ordering with METIS (sci-libs/metis, sci-libs/parmetis)
sci-libs/mumps:scotch - Enable matrix ordering with sci-libs/scotch
sci-libs/netcdf:blosc - Allow using blosc compression via dev-libs/c-blosc
sci-libs/netcdf:dap - Support for remote data access with the built-in OPeNDAP client
sci-libs/netcdf:hdf - Build with HDF4 read capability(sci-libs/hdf, sci-libs/hdf5 and sys-libs/zlib required).
sci-libs/nlopt:octave - Add plugin for sci-mathematics/octave
sci-libs/octomap:dynamicEDT3D - Build and install dynamicEDT3D library: A library for incrementally updatable Euclidean distance transforms in 3D.
sci-libs/onnx:disableStaticReg - Disable Static Registration
sci-libs/openblas:dynamic - Build dynamic architecture detection at run time (for multi targets)
sci-libs/openblas:eselect-ldso - Enable BLAS/LAPACK runtime switching
sci-libs/openblas:index-64bit - Compile a separate INTERFACE64 OpenBLAS
sci-libs/openblas:pthread - Build with pthread threading model
sci-libs/openblas:relapack - Build the ReLAPACK extension to OpenBLAS
sci-libs/opencascade:eigen - Enable support for eigenvalues through the header-only dev-cpp/eigen package.
sci-libs/opencascade:freeimage - Enable support for image i/o via media-libs/freeimage
sci-libs/opencascade:freetype - Enable media-libs/freetype support
sci-libs/opencascade:inspector - Build Inspector tool
sci-libs/opencascade:jemalloc - Enable jemalloc allocator support via dev-libs/jemalloc
sci-libs/opencascade:json - Enable JSON support through dev-libs/rapidjson
sci-libs/opencascade:optimize - Don't clear allocated memory. Use optimized memory manager unlesstbb USE flag is set.
sci-libs/opencascade:tbb - Enable multithreading with the Intel Threads Building Block dev-cpp/tbb
sci-libs/opencascade:testprograms - Indicates whether non-regression OCCT test scripts should be installed
sci-libs/opencascade:vtk - Enable Visualization Toolkit support via sci-libs/vtk
sci-libs/orocos_kdl:models - Build models for some well known robots.
sci-libs/p4est:romio - Build with support for the ROMIO MPI-IO component
sci-libs/p4est:vtk-binary - Enable binary vtk output. If disabled vtk files will be written in ASCII text format.
sci-libs/pastix:fortran - Install the Fortran interface
sci-libs/pastix:int64 - Use 64- rather than 32-bit integer representation
sci-libs/pastix:metis - Enable matrix ordering with sci-libs/metis
sci-libs/pastix:scotch - Enable matrix ordering with sci-libs/scotch
sci-libs/pastix:starpu - Enable support for ther dev-libs/starpu runtime
sci-libs/pcl:openni - Adds support for Kinect-like 3D sensors devices with dev-libs/OpenNI.
sci-libs/pcl:openni2 - Adds support for Kinect-like 3D sensors devices with dev-libs/OpenNI2 (should be preferred over openni).
sci-libs/pcl:pcap - Adds pcap file capabilities in some drivers.
sci-libs/pcl:qhull - Adds convex-hull operation support via media-libs/qhull.
sci-libs/pcl:tutorials - Builds and installs tutorials.
sci-libs/pcl:vtk - Adds support for VTK-Visualizations.
sci-libs/plplot:dynamic - Build with dynamic drivers
sci-libs/plplot:octave - Add bindings for sci-mathematics/octave
sci-libs/plplot:qhull - Add bindings for media-libs/qhull
sci-libs/plplot:shapefile - Enable support for ESRI shapefiles
sci-libs/rocBLAS:benchmark - Build and install rocblas-bench.
sci-libs/rocBLAS:test - Perform rocblas-test to compare the result between rocBLAS and system BLAS.
sci-libs/rocFFT:benchmark - Build and install rocfft benchmark tools.
sci-libs/rocFFT:perfscripts - Install rocfft-perf performance visualization suite.
sci-libs/rocPRIM:benchmark - Build and install benchmark programs.
sci-libs/rocRAND:benchmark - Build and install benchmark programs.
sci-libs/rocSOLVER:benchmark - Build and install rocsolver-bench.
sci-libs/rocSOLVER:test - Perform rocsolver-test to compare the result between rocSOLVER and system LAPACK.
sci-libs/rocSPARSE:benchmark - Build and install rocblas-bench.
sci-libs/rocThrust:benchmark - Build and install benchmark binary.
sci-libs/rtabmap:openni2 - Adds support for Kinect-like 3D sensors devices with dev-libs/OpenNI2.
sci-libs/scotch:int64 - Build the 64 bits integer library (needed for > 2^31 vertices)
sci-libs/scotch:tools - Provides the graph, mesh, architecture, mapping/ordering, output handling programs (see Scotch User's Guide).
sci-libs/silo:browser - Enable browser support
sci-libs/silo:silex - Build silex data browser
sci-libs/spqr:partition - Use the partition module of sci-libs/cholmod for partitioning
sci-libs/spqr:tbb - Enable multithreading with the Intel Threads Building Block dev-cpp/tbb
sci-libs/spr:root - Add sci-physics/root graphics and i/o support
sci-libs/suitesparse:partition - Enable graph partitioning and graph-partition-based orderings through sci-libs/metis or sci-libs/parmetis
sci-libs/suitesparse:tbb - Enable multithreading with the Intel Threads Building Block dev-cpp/tbb
sci-libs/sundials:hypre - Build with sci-libs/hypre conditioners
sci-libs/sundials:int64 - Use index size of 64 rather than 32 bits
sci-libs/sundials:sparse - Enable support for sci-libs/klu sparse solver
sci-libs/sundials:superlumt - Build with sci-libs/superlu_mt
sci-libs/superlu_mt:int64 - Build the 64 bits integer library
sci-libs/symengine:arb - Add support for arb (sci-mathematics/arb)
sci-libs/symengine:benchmarks - Build benchmarks
sci-libs/symengine:boost - Add support for boost integers(dev-libs/boost)
sci-libs/symengine:ecm - Add support for ECM integer factorization library (sci-mathematics/gmp-ecm)
sci-libs/symengine:flint - Add support for (sci-mathematics/flint)
sci-libs/symengine:llvm - Build with LLVM
sci-libs/symengine:mpc - Add support for multiprecision complex arithmetic(dev-libs/mpc)
sci-libs/symengine:mpfr - Add support for multiprecision floating point rouding(dev-libs/mpfr)
sci-libs/trilinos:adolc - Add support for adolc (sci-libs/adolc)
sci-libs/trilinos:all-packages - Enable all supported Trilinos packages (per default only a subset is built)
sci-libs/trilinos:arprec - Add support for arprec (sci-libs/arprec)
sci-libs/trilinos:clp - Add support for clp (sci-libs/coinor-clp)
sci-libs/trilinos:eigen - Add support for eigen (dev-cpp/eigen)
sci-libs/trilinos:glpk - Add support for glpk (sci-mathematics/glpk)
sci-libs/trilinos:gtest - Add support for gtest (dev-cpp/gtest)
sci-libs/trilinos:hdf5 - Add support for hdf5 (sci-libs/hdf5)
sci-libs/trilinos:hwloc - Add support for hwloc (sys-apps/hwloc)
sci-libs/trilinos:hypre - Add support for hypre (sci-libs/hypre)
sci-libs/trilinos:matio - Add support for matio (sci-libs/matio)
sci-libs/trilinos:metis - Add support for metis (sci-libs/metis or sci-libs/parmetis)
sci-libs/trilinos:mkl - Add support for mkl (sci-libs/mkl)
sci-libs/trilinos:mumps - Add support for mumps (sci-libs/mumps)
sci-libs/trilinos:netcdf - Add support for netcdf (sci-libs/netcdf)
sci-libs/trilinos:petsc - Add support for petsc (sci-mathematics/petsc)
sci-libs/trilinos:qd - Add support for qd (sci-libs/qd)
sci-libs/trilinos:scalapack - Add support for scalapack (sci-libs/scalapack)
sci-libs/trilinos:scotch - Add support for scotch (sci-libs/scotch)
sci-libs/trilinos:sparse - Add support for sparse matrix solvers (sci-libs/umfpack)
sci-libs/trilinos:superlu - Add support for superlu (sci-libs/superlu)
sci-libs/trilinos:taucs - Add support for taucs (sci-libs/taucs)
sci-libs/trilinos:tbb - Add support for threading building blocks library (dev-cpp/tbb)
sci-libs/trilinos:tvmet - Add support for tvmet (dev-libs/tvmet)
sci-libs/trilinos:yaml - Add support for yaml (dev-cpp/yaml-cpp)
sci-libs/umfpack:cholmod - Use sci-libs/cholmod for matrix ordering
sci-libs/vtk:all-modules - Build all modules
sci-libs/vtk:boost - Add support for boost
sci-libs/vtk:freetype - Build support for font rendering
sci-libs/vtk:gdal - Support for gdal formated data
sci-libs/vtk:imaging - Building Imaging modules
sci-libs/vtk:las - Build support for LiDAR files
sci-libs/vtk:logging - Build the logging module
sci-libs/vtk:opencascade - Enable OpenCASCADE support
sci-libs/vtk:openvdb - Build support to handle VDB data files
sci-libs/vtk:pdal - Build support to handle point cloud data files
sci-libs/vtk:qt6 - Use Qt6 packages instead of Qt5
sci-libs/vtk:rendering - Building Redering modules
sci-libs/vtk:sdl - Enable SDL2 support for rendering modules
sci-libs/vtk:tbb - Use dev-cpp/tbb to handle smp support
sci-libs/vtk:views - Building Views modules
sci-libs/vtk:vtkm - Build the vtkm accelerations modules
sci-libs/vtk:web - Install web component
sci-mathematics/bertini:optimization - Accept upstream's choices for -O option.
sci-mathematics/boolector:cryptominisat - Enable support for sci-mathematics/cryptominisat
sci-mathematics/boolector:minisat - Enable support for sci-mathematics/minisat
sci-mathematics/boolector:picosat - Enable support for sci-mathematics/picosat
sci-mathematics/cadabra:jupyter - Build the Cadabra Jupyter kernel
sci-mathematics/cvc4:cln - Use sci-libs/cln
sci-mathematics/cvc4:proofs - Support for proof generation
sci-mathematics/cvc4:statistics - Include statistics
sci-mathematics/eclib:boost - Add parallel capabilities using dev-libs/boost.
sci-mathematics/eclib:flint - Enable the use of sci-mathematics/flint for certain operations.
sci-mathematics/eclib:minimal - Build only the "mwrank" program.
sci-mathematics/eprover:ho - enable support for higher-order logic
sci-mathematics/flint:ntl - Build NTL interface
sci-mathematics/form:devref - Build and install developers reference
sci-mathematics/form:doxygen - Build and install API documentation
sci-mathematics/fricas:clisp - Add support for GNU CLISP (dev-lisp/clisp)
sci-mathematics/fricas:clozurecl - Add support for Clozure Common Lisp (dev-lisp/clozurecl)
sci-mathematics/fricas:cmucl - Add support for CMU Common Lisp (dev-lisp/cmucl)
sci-mathematics/fricas:ecl - Add support for Embeddable Common Lisp (dev-lisp/ecl)
sci-mathematics/fricas:gcl - Add support for GNU Common Lisp (dev-lisp/gcl)
sci-mathematics/fricas:sbcl - Add support for Steel Bank Common Lisp (dev-lisp/sbcl)
sci-mathematics/gap:memcheck - Enable memory checking
sci-mathematics/gap:minimal - Install only the GAP packages that are strictly required for GAP to run. GAP will complain about the others unless you either start it with the "-A" flag or set "AutoloadPackages" in your gap.ini.
sci-mathematics/geomview:motionaveraging - Enable experimental motion averaging technique
sci-mathematics/giac:ecm - Enable the use of sci-mathematics/gmp-ecm
sci-mathematics/giac:gc - Enable garbage collection support via dev-libs/boehm-gc
sci-mathematics/giac:glpk - Enable the use of sci-mathematics/glpk
sci-mathematics/gmp-ecm:custom-tune - Improve performance of some operations by selecting machine-specific defaults
sci-mathematics/gretl:R - Enable support for dev-lang/R
sci-mathematics/gretl:extras - Build and install add-ons bundled with gretl
sci-mathematics/lcalc:double - Use double precision (the upstream default)
sci-mathematics/lcalc:double-double - Use sci-libs/qdfor double-double precision
sci-mathematics/lcalc:pari - Use sci-mathematics/pari for elliptic curve L-functions
sci-mathematics/lcalc:quad-double - Use sci-libs/qdfor quad-double precision
sci-mathematics/mathematica:R - Enable dev-lang/R backend support
sci-mathematics/mathematica:bundle - Install from Wolfram's bundle file or from Mathematica only
sci-mathematics/mathematica:ffmpeg - Enable media-video/ffmpeg backend support
sci-mathematics/maxima:clisp - Compile maxima with GNU CLISP (dev-lisp/clisp)
sci-mathematics/maxima:clozurecl - Compile maxima with 32-bit Clozure Common Lisp (dev-lisp/clozurecl)
sci-mathematics/maxima:clozurecl64 - Compile maxima with 64-bit Clozure Common Lisp (dev-lisp/clozurecl)
sci-mathematics/maxima:cmucl - Compile maxima with CMU Common Lisp (dev-lisp/cmucl)
sci-mathematics/maxima:ecl - Compile maxima with Embeddable Common Lisp (dev-lisp/ecl)
sci-mathematics/maxima:gcl - Compile maxima with GNU Common Lisp (dev-lisp/gcl)
sci-mathematics/maxima:sbcl - Compile maxima with Steel Bank Common Lisp (dev-lisp/sbcl)
sci-mathematics/maxima:vtk - Support plotting with sci-libs/vtk
sci-mathematics/msieve:ecm - Enable support for the GMP-ECM library
sci-mathematics/normaliz:extras - Install Macaulay2 and sci-mathematics/singularpackages as shipped by upstream
sci-mathematics/normaliz:nauty - Use sci-mathematics/nauty to compute automorphism groups.
sci-mathematics/octave:fltk - Use x11-libs/fltk as the backend for the OpenGL renderer in the absence of the Qt GUI
sci-mathematics/octave:glpk - Add support for sci-mathematics/glpk for linear programming
sci-mathematics/octave:gnuplot - Use sci-visualization/gnuplot to render plots if OpenGL is unavailable
sci-mathematics/octave:imagemagick - Use media-gfx/graphicsmagick to read and write images
sci-mathematics/octave:json - Allow using jsonencode and jsondecode commands via dev-libs/rapidjson
sci-mathematics/octave:klu - Add support for KLU (sci-libs/klu)
sci-mathematics/octave:qhull - Add support for media-libs/qhull, to allow `delaunay', `convhull', and related functions
sci-mathematics/octave:qrupdate - Add support for sci-libs/qrupdatefor QR and Cholesky update functions
sci-mathematics/octave:sparse - Add enhanced support for sparse matrix algebra with SuiteSparse
sci-mathematics/octave:spqr - Add support for SPQR (sci-libs/spqr)
sci-mathematics/octave:sundials - Enable the ode15i and ode15s ODE solvers using sci-libs/sundials
sci-mathematics/pari:data - Add additional data (elldata, galdata, seadata, nftables)
sci-mathematics/petsc:afterimage - Use Afterstep image library (media-libs/libafterimage)
sci-mathematics/petsc:boost - Use boost (dev-libs/boost)
sci-mathematics/petsc:complex-scalars - Make scalars complex
sci-mathematics/petsc:hypre - Use HYPRE (sci-mathematics/hypre) and for preconditioning
sci-mathematics/petsc:int64 - Use 64 bit indexes
sci-mathematics/petsc:metis - Add support for metis (sci-libs/parmetis)
sci-mathematics/petsc:mumps - Add support for mumps (sci-libs/mumps)
sci-mathematics/petsc:scotch - Add support for scotch (sci-libs/scotch)
sci-mathematics/petsc:sparse - Use suitesparse (sci-libs/suitesparse) including cholmod (sci-libs/cholmod) for sparse factorization
sci-mathematics/petsc:superlu - Use superlu (sci-libs/superlu) for preconditioning
sci-mathematics/polymake:bliss - Enable sci-libs/bliss interface for graph and face lattice isomorphism computations.
sci-mathematics/polymake:cdd - Enable sci-libs/cddlib interface for convex hull computations (Should be kept enabled).
sci-mathematics/polymake:flint - Build with "strongly recommended" support for sci-mathematics/flint.
sci-mathematics/polymake:libpolymake - Build the polymake library to build applications using the C++ interface.
sci-mathematics/polymake:lrs - Enable sci-libs/lrslib interface for convex hull computations.
sci-mathematics/polymake:nauty - Build the extension for graph automorphism computations using sci-mathematics/nauty.
sci-mathematics/polymake:normaliz - Build the bundled extension for lattice computations using sci-mathematics/normaliz.
sci-mathematics/polymake:ppl - Enable dev-libs/ppl interface for convex hull computations.
sci-mathematics/polymake:singular - Enable the interface to sci-mathematics/singular for ideal related computations.
sci-mathematics/primecount:executable - Build the primecount CLI executable
sci-mathematics/primesieve:executable - Build the primesieve CLI executable
sci-mathematics/singular:polymake - Enable the interface to TOPCOM
sci-mathematics/slepc:arpack - Adds support for ARPACK (sci-libs/arpack)
sci-mathematics/slepc:complex-scalars - Make scalars complex
sci-mathematics/stp:cryptominisat - Enable sci-mathematics/cryptominisat support
sci-mathematics/stp:python - Enable building the Python interface
sci-mathematics/unuran:prng - Use sci-mathematics/prng library
sci-mathematics/unuran:rngstreams - Use sci-mathematics/rngstreams library
sci-mathematics/vampire:z3 - Enable support for sci-mathematics/z3
sci-mathematics/why3:coq - Add sci-mathematics/coq support
sci-mathematics/why3:gtk - Build the IDE x11-libs/gtk+
sci-mathematics/why3:re - Use Re (dev-ml/re) instead of Str for regular expressions
sci-mathematics/why3:sexp - Add support for outputting S-expressions with dev-ml/ppx_sexp_conv
sci-mathematics/why3:stackify - Enable structure reconstruction algorithm for MLCFG
sci-mathematics/why3:zarith - Use Zarith (dev-ml/zarith) instead of Nums (dev-ml/num) for computations
sci-mathematics/why3:zip - Enable compression of session files
sci-mathematics/why3-for-spark:coq - Add sci-mathematics/coq support
sci-mathematics/why3-for-spark:html - Build HTML documentation
sci-mathematics/why3-for-spark:hypothesis-selection - Enable hypothesis selection
sci-mathematics/why3-for-spark:sexp - Add support for outputting S-expressions with dev-ml/ppx_sexp_conv
sci-mathematics/why3-for-spark:zarith - Use Zarith (dev-ml/zarith) instead of Nums (dev-ml/num) for computations
sci-mathematics/why3-for-spark:zip - Enable compression of session files
sci-mathematics/wxmaxima:webkit - Use net-libs/webkit-gtk to show help (for maxima and wxmaxima) inside wxmaxima
sci-mathematics/yacas:jupyter - Add support for jupyter notebook
sci-mathematics/yices2:mcsat - Enable support for MCSAT
sci-mathematics/z3:isabelle - Add integration support for the Isabelle/HOL theorem prover.
sci-misc/h5utils:hdf - Build hdf to hdf5 (and vice-versa) converter
sci-misc/h5utils:octave - Build Octave plugins
sci-misc/nco:dap - Support for remote data access with the NETCDF DAP client
sci-misc/nco:ncap2 - Build next generation netcdf arithmetic processor (needs dev-java/antlr)
sci-misc/nco:udunits - Add sci-libs/udunits files support
sci-physics/bullet:double-precision - Build libraries in double precision
sci-physics/bullet:extras - Build the extras
sci-physics/bullet:tbb - Enable multithreading with the Intel Threads Building Block dev-cpp/tbb
sci-physics/espresso:examples - Installs the examples
sci-physics/fastjet:cgal - Use sci-mathematics/cgal instead of bundled algorithms
sci-physics/fastjet:plugins - Build all standard and C++ plugins
sci-physics/geant:data - Add a lot of standard physics data files for geant4
sci-physics/geant:freetype - Add support for media-libs/freetype
sci-physics/geant:gdml - Enable geometry markup language for xml
sci-physics/geant:geant3 - Add compatibility for geant321 to geant4
sci-physics/geant:inventor - Add support for Open Inventor SGI toolkit via Coin3D
sci-physics/geant:raytracerx - Enable raytracing for physics events
sci-physics/geant:tbb - Enable support for dev-cpp/tbb
sci-physics/geant:trajectories - Enable display of particle trajectories
sci-physics/geant:vtk - Use sci-libs/vtk for visualization (experimental)
sci-physics/geant4_vmc:g4root - Build G4Root (interface for GEANT4 simulation with a ROOT geometry)
sci-physics/geant4_vmc:geant3 - Build with Geant4 G3toG4 library
sci-physics/geant4_vmc:vgm - Enable the Virtual Geometry Model (sci-physics/vgm)
sci-physics/hepmc:cm - Build with cm instead of default mm for length units
sci-physics/hepmc:gev - Build with GeV instead of default MeV for momentum units
sci-physics/hepmc:root - Build with ROOTIO enabled
sci-physics/lammps:extra - Additional compute, dump, fix, molecular, pair styles
sci-physics/lammps:hip - Enable hip gpu computing support
sci-physics/lammps:lammps-memalign - Enables the use of the posix_memalign() call instead of malloc() when large chunks or memory are allocated by LAMMPS. Aliengnment is on 16 byte boundaries.
sci-physics/pythia:fastjet - Build jets using the sci-physics/fastjet package
sci-physics/pythia:hepmc - Adds support for High Energy Physics Monte Carlo Generators sci-physics/hepmc
sci-physics/pythia:hepmc2 - Adds support for High Energy Physics Monte Carlo Generators 2 sci-physics/hepmc
sci-physics/pythia:hepmc3 - Adds support for High Energy Physics Monte Carlo Generators 3 sci-physics/hepmc
sci-physics/pythia:highfive - Support hdf and highfive
sci-physics/pythia:lhapdf - Support the use of external PDF sets via sci-physics/lhapdf
sci-physics/pythia:mpich - Support mpich
sci-physics/pythia:rivet - Support sci-physics/rivet
sci-physics/pythia:root - Use sci-physics/root trees and histograms (in examples only)
sci-physics/rivet:hepmc2 - Build with HepMC2
sci-physics/rivet:hepmc3 - Build with HepMC3
sci-physics/rivet:highfive - Build with hdf5 and highfive
sci-physics/rivet:zlib - Build with zlib
sci-physics/root:R - Enable support for dev-lang/R
sci-physics/root:asimage - Enable support for media-libs/libafterimage
sci-physics/root:cudnn - Enable support for nVidia cuDNN library
sci-physics/root:davix - Enable support for DAVIX Data Management Client (https://cern.ch/davix)
sci-physics/root:fits - Enable support for images and data from FITS files with sci-libs/cfitsio
sci-physics/root:fortran - Compile included Fortran programs
sci-physics/root:gdml - Enable GDML writer and reader
sci-physics/root:http - Enable http server support including but not limited to fastcgi support
sci-physics/root:jupyter - Install dependencies to enable ROOT's C++ kernel in Jupyter notebooks
sci-physics/root:libcxx - Build ROOT against sys-libs/libcxx
sci-physics/root:minuit - Build ROOT's internal versions of minuit (fortran) and minuit2 (C++)
sci-physics/root:pythia6 - Build the interface for sci-physics/pythia version 6.x
sci-physics/root:pythia8 - Build the interface for sci-physics/pythia version 8.x
sci-physics/root:roofit - Build RooFit function fitting package
sci-physics/root:root7 - Build experimental features to be released with ROOT 7
sci-physics/root:shadow - Enable shadow authentication in rootd and proofd
sci-physics/root:tbb - Enable implicit multi-threading (IMT) with dev-cpp/tbb
sci-physics/root:tmva - Built TMVA (ROOT's multi-variate analysis toolkit for machine learning)
sci-physics/root:unuran - Enable support for sci-mathematics/unuran
sci-physics/root:uring - Enable support for sys-libs/liburing in RNTuple
sci-physics/root:vc - Enable support for dev-libs/vc with VecCore
sci-physics/root:xrootd - Build the interface for net-libs/xrootd
sci-physics/thepeg:fastjet - Adds support for sci-physics/fastjet
sci-physics/thepeg:hepmc - Adds support for High Energy Physics Monte Carlo Generatorssci-physics/hepmc
sci-physics/thepeg:hepmc3 - Adds support for High Energy Physics Monte Carlo Generators 3sci-physics/hepmc
sci-physics/thepeg:lhapdf - Adds support for sci-physics/lhapdf
sci-physics/thepeg:rivet - Adds support for sci-physics/rivet
sci-physics/vgm:geant4 - Enable interaction with Geant4(sci-physics/geant:4)
sci-physics/vgm:root - Enable interaction with ROOT (sci-physics/root)
sci-physics/yoda:root - Adds support for sci-physics/root
sci-visualization/fityk:nlopt - Enable optimization with sci-libs/nlopt
sci-visualization/gnuplot:amos - Enable Amos routines for complex Airy and Bessel functions (dev-libs/openspecfun)
sci-visualization/gnuplot:bitmap - Enable dot-matrix printers and pbm terminal
sci-visualization/gnuplot:gd - Add support for media-libs/gd. Needed for GIF, JPEG, and PNG image output.
sci-visualization/gnuplot:gpic - Include support for gpic terminal
sci-visualization/gnuplot:libcerf - Enable special functions from sci-libs/libcerf
sci-visualization/gnuplot:metafont - Include support for metafont terminal
sci-visualization/gnuplot:metapost - Include support for metapost terminal
sci-visualization/gnuplot:regis - Include support for ReGIS terminal
sci-visualization/gnuplot:tgif - Include support for tgif terminal
sci-visualization/gr:agg - Enable the libagg anti-grain rendering engine
sci-visualization/gwyddion:fits - Enable FITS image import via sci-libs/cfitsio
sci-visualization/gwyddion:jansson - Enable JSON data manipulation via dev-libs/jansson
sci-visualization/gwyddion:sourceview - Enable support for x11-libs/gtksourceview
sci-visualization/gwyddion:unique - Enable remote control backend via dev-libs/libunique
sci-visualization/labplot:eigen - Enable support for fast baseline removal via dev-cpp/eigen
sci-visualization/labplot:fits - Enable support for NASA's sci-libs/cfitsio library
sci-visualization/labplot:libcerf - Enable special functions from sci-libs/libcerf
sci-visualization/labplot:markdown - Enable Markdown support via app-text/discount
sci-visualization/labplot:matio - Enable support for matio (sci-libs/matio)
sci-visualization/labplot:ods - Enable support for importing/exporting OpenDocument spreadsheets (.ods) via dev-libs/liborcus
sci-visualization/labplot:origin - Enable support for reading OriginLab OPJ project files through sci-libs/liborigin
sci-visualization/labplot:root - Enable support for CERN's ROOT file type
sci-visualization/labplot:serial - Enable support for RS232 serial ports using dev-qt/qtserialport
sci-visualization/labplot:share - Enable support for a share menu using kde-frameworks/purpose
sci-visualization/labplot:xlsx - Enable support for importing/exporting Microsoft Excel files (.xlsx) via dev-libs/qxlsx
sci-visualization/paraview:boost - Enable the usage of dev-libs/boost
sci-visualization/paraview:cg - Add support for nvidia's cg shaders
sci-visualization/paraview:nvcontrol - Add NVCONTROL support for OpenGL options
sci-visualization/paraview:offscreen - Offscreen rendering through OSMesa
sci-visualization/paraview:plugins - Build and install additional plugins
sci-visualization/paraview:webengine - Add support for dev-qt/qtwebengine
sci-visualization/scidavis:origin - Add support for reading OriginLab OPJ project files through sci-libs/liborigin.
sci-visualization/scidavis:python - Build support for python scripting.
sec-policy/selinux-base:ubac - Enable User Based Access Control (UBAC) in the SELinux policy
sec-policy/selinux-base:unconfined - Enable support for the unconfined SELinux module
sec-policy/selinux-base:unknown-perms - Default allow unknown classes in kernels newer than the policy (SELinux policy capability).
sec-policy/selinux-base-policy:unconfined - Enable support for the unconfined SELinux policy module
sys-apps/accountsservice:elogind - Use sys-auth/elogind for session tracking
sys-apps/accountsservice:systemd - Use sys-apps/systemd for session tracking
sys-apps/bfs:io-uring - Use sys-libs/liburing for faster async I/O
sys-apps/busybox:make-symlinks - Create all the appropriate symlinks in /bin and /sbin.
sys-apps/busybox:math - Enable math support in gawk (requires libm)
sys-apps/busybox:mdev - Create the appropriate symlink in /sbin and install mdev.conf and support files
sys-apps/busybox:sep-usr - Support a separate /usr without needing an initramfs by booting with init=/ginit
sys-apps/busybox:static - Make the system rescue shell (/bin/bb) static so you can recover even when glibc is broken
sys-apps/busybox:systemd - Support systemd
sys-apps/coreutils:caps - Add Linux capabilities support in output of file utilities (ls, dir, ...) via sys-libs/libcap
sys-apps/coreutils:hostname - Build the hostname program
sys-apps/coreutils:kill - Build the kill program
sys-apps/coreutils:multicall - Build all tools into a single `coreutils` program akin to busybox to save space
sys-apps/coreutils:openssl - Use openssl libcrypto hash routines for hash functions
sys-apps/coreutils:split-usr - Enable this if /bin and /usr/bin are separate directories
sys-apps/cpu-x:cpu - Use the dev-libs/libcpuid library for CPU info
sys-apps/cpu-x:force-libstatgrab - Use sys-libs/libstatgrab to instead of sys-process/procps
sys-apps/cpu-x:gpu - Use the media-libs/glfw library for GPU info
sys-apps/cpu-x:pci - Use the sys-apps/pciutils library for PCI info
sys-apps/dbus:elogind - Use sys-auth/elogind for session tracking.
sys-apps/dbus:systemd - Build with sys-apps/systemd at_console support
sys-apps/dbus-broker:launcher - dbus-daemon compatibility launcher
sys-apps/dtc:yaml - support .yaml-encoded device trees
sys-apps/duc:X - Use X11 for the GUI instead of OpenGL. This is the recommended option
sys-apps/duc:cairo - Build support for exporting to PNG and PDF with x11-libs/cairo
sys-apps/duc:leveldb - Use dev-libs/leveldb as the backend
sys-apps/duc:ncurses - Build support for the ncurses client
sys-apps/duc:sqlite - Use dev-db/sqlite:3 as the backend
sys-apps/duc:tokyocabinet - Use dev-db/tokyocabinet as the backend
sys-apps/elfix:ptpax - Enable PT_PAX_FLAGS support.
sys-apps/elfix:xtpax - Enable XATTR_PAX_FLAGS support.
sys-apps/etckeeper:cron - Install cron script
sys-apps/ethtool:netlink - Enable netlink interface via net-libs/libmnl
sys-apps/firejail:X - Enable X11 sandboxing
sys-apps/firejail:apparmor - Enable support for custom AppArmor profiles
sys-apps/firejail:chroot - Enable chrooting to custom directory
sys-apps/firejail:contrib - Install contrib scripts
sys-apps/firejail:dbusproxy - Enable DBus proxying to filter access in supporting profiles
sys-apps/firejail:file-transfer - Enable file transfers between sandboxes and the host system
sys-apps/firejail:globalcfg - Enable global config file
sys-apps/firejail:network - Enable networking features
sys-apps/firejail:private-home - Enable private home feature
sys-apps/firejail:userns - Enable attaching a new user namespace to a sandbox (--noroot option)
sys-apps/flashrom:atahpt - Highpoint (HPT) ATA/RAID controller support
sys-apps/flashrom:atapromise - Support for Promise PDC2026x (FastTrak/Ultra)
sys-apps/flashrom:atavia - Support for VIA VT6421A SATA controllers
sys-apps/flashrom:buspirate-spi - Enable Bus Pirate SPI programmer
sys-apps/flashrom:ch341a-spi - Enable WCH CH341A SPI programmer
sys-apps/flashrom:dediprog - Dediprog SF100 support
sys-apps/flashrom:developerbox-spi - Enable Devloperbox SPI recovery support
sys-apps/flashrom:digilent-spi - Enable support for Digilent iCEblink40 development board
sys-apps/flashrom:dirtyjtag-spi - Support for DirtyJTAG (a USB-JTAG firmware for STM32 MCUs)
sys-apps/flashrom:drkaiser - Enable Dr. Kaiser programmer
sys-apps/flashrom:dummy - Enable dummy tracing
sys-apps/flashrom:ft2232-spi - Enable ftdi programmer, flashing through FTDI/SPI USB interface
sys-apps/flashrom:gfxnvidia - Enable NVIDIA programmer
sys-apps/flashrom:internal - Enable internal/onboard support
sys-apps/flashrom:internal-dmi - Enable internal DMI decoding rather than use sys-apps/dmidecode
sys-apps/flashrom:it8212 - Support for ITE IT8212F ATA/RAID controllers
sys-apps/flashrom:jlink-spi - Support for SEGGER J-Link and compatible devices
sys-apps/flashrom:linux-mtd - Enable support for Linux mtd SPI flash devices
sys-apps/flashrom:linux-spi - Enable support for Linux userspace spidev interface
sys-apps/flashrom:mediatek-i2c-spi - Support for Mediatek LCD controllers
sys-apps/flashrom:mstarddc-spi - Support for SPI flash ROMs accessible through DDC in MSTAR-equipped displays
sys-apps/flashrom:nic3com - Enable 3Com NIC programmer
sys-apps/flashrom:nicintel - Support for Intel NICs
sys-apps/flashrom:nicintel-eeprom - Support for EEPROMs on Intel Gigabit network cards
sys-apps/flashrom:nicintel-spi - Support for SPI on Intel NICs
sys-apps/flashrom:nicnatsemi - Support for National Semiconductor NICs
sys-apps/flashrom:nicrealtek - Support for Realtek NICs
sys-apps/flashrom:ogp-spi - Enable support for OGP (Open Graphics Project) SPI flashing
sys-apps/flashrom:parade-lspcon - Enable support for Parade lspcon USB-C to HDMI protocol translator
sys-apps/flashrom:pickit2-spi - Support for SPI flash ROMs accessible via Microchip PICkit2
sys-apps/flashrom:pony-spi - Enable support for SI-Prog like hardware by Lancos
sys-apps/flashrom:raiden-debug-spi - Support for Chrome EC based debug tools - SuzyQable, Servo V4, C2D2 & uServo
sys-apps/flashrom:rayer-spi - RayeR SPIPGM hardware support
sys-apps/flashrom:realtek-mst-i2c-spi - Enable support for Realtek RTD2142 MST
sys-apps/flashrom:satamv - Enable programmer for Marvell SATA controllers
sys-apps/flashrom:satasii - Enable programmer for SiI SATA controllers
sys-apps/flashrom:serprog - Enable Serial Flasher programmer
sys-apps/flashrom:stlinkv3-spi - Enable SPI programmer using STLINK-V3
sys-apps/flashrom:tools - Install ich_descriptor_tool, a tool for reading descriptor-mode SPI-flash images for Intel chipsets
sys-apps/flashrom:usbblaster-spi - Enable support for Altera USB-Blaster dongles
sys-apps/fwupd:amdgpu - Build and install AMD dGPU (Navi3x and above) plugin
sys-apps/fwupd:amt - Build and install Intel AMT plugin
sys-apps/fwupd:archive - Use app-arch/libarchive for archives support
sys-apps/fwupd:cbor - Enable CBOR support for coSWID and uSWID via dev-libs/libcbor
sys-apps/fwupd:fastboot - Build and install fastboot plugin
sys-apps/fwupd:flashrom - Enable flashrom plugin via sys-apps/flashrom
sys-apps/fwupd:gusb - Enable dev-libs/libgusb support
sys-apps/fwupd:logitech - Build and install Logitech bulk controller plugin
sys-apps/fwupd:modemmanager - Build and install Modem Manager plugin
sys-apps/fwupd:nvme - Build and install NVMe plugin
sys-apps/fwupd:spi - Install Intel-SPI plugin
sys-apps/fwupd:synaptics - Install synaptics plugin
sys-apps/fwupd:test-full - Enable tests known not to play nicely with the sandbox
sys-apps/fwupd:tpm - Install Trusted Platform Module plugin
sys-apps/fwupd:uefi - Enable UEFI support
sys-apps/gawk:mpfr - Use dev-libs/mpfr for high precision arithmetic (-M / --bignum)
sys-apps/gawk:pma - Experimental Persistent Memory Allocator (PMA) support which allows persistence of variables, arrays, and user-defined functions across runs.
sys-apps/gnome-disk-utility:fat - Include FAT16/FAT32 support (sys-fs/dosfstools)
sys-apps/grep:egrep-fgrep - Install deprecated 'egrep' and 'fgrep' wrappers for 'grep -E' and 'grep -F' respectively. GNU grep 3.8 onwards warns about their usage by default, but the versions installed by this flag do not. No deprecation warnings are emitted when this flag is enabled.
sys-apps/groff:uchardet - Enable automatic encoding detection via app-i18n/uchardet
sys-apps/hwloc:X - use the X Window System
sys-apps/hwloc:cairo - Enable the Cairo back-end of hwloc's lstopo command
sys-apps/hwloc:cpuid - Enable the cpuid-based architecture specific support (x86 component)
sys-apps/hwloc:cuda - Enable CUDA device discovery using libcudart
sys-apps/hwloc:gl - Enable GL display device discovery (NVCtrl)
sys-apps/hwloc:l0 - Enable oneAPI Level Zero device discovery
sys-apps/hwloc:numa - Add support for numa memory allocation
sys-apps/hwloc:nvml - Enable the NVML device discovery
sys-apps/hwloc:pci - Enable PCI device discovery using libpci
sys-apps/hwloc:plugins - Build hwloc components as plugins so that the hwloc core library does not directly depend on their dependencies (for instance the libpci library)
sys-apps/hwloc:rocm - Enable AMD RSMI device discovery
sys-apps/hwloc:xml - use libxml2 for XML support, instead of a custom minimalistic support
sys-apps/ibm-powerpc-utils:rtas - Add support for the Run Time Abstraction Services (RTAS)
sys-apps/iotools:make-symlinks - Generate sub-command symlinks to iotools -- note that a lot are simple like "xor"
sys-apps/ipmicfg:uefi - Install compatible UEFI file for boot.
sys-apps/ipmitool:openbmc - Enable OpenBMC D-Bus interface
sys-apps/ipmitool:openipmi - Use the system OpenIPMI implementation.
sys-apps/iproute2:berkdb - build programs that use berkdb (just arpd)
sys-apps/iproute2:bpf - Use dev-libs/libbpf
sys-apps/iproute2:elf - support loading eBPF programs from ELFs (e.g. LLVM's eBPF backend)
sys-apps/iproute2:iptables - include support for iptables filtering
sys-apps/iproute2:minimal - only install ip and tc programs, without eBPF support
sys-apps/iproute2:nfs - Support RPC lookups via net-libs/libtirpc in ss
sys-apps/irqbalance:numa - Support balancing IRQs across NUMA nodes
sys-apps/irqbalance:thermal - Enable support of thermal events via sys-power/thermald
sys-apps/irqbalance:tui - Enable build of irqbalance terminal user interface
sys-apps/kexec-tools:booke - Include support for Book-E memory management
sys-apps/kexec-tools:lzma - Enables support for LZMA compressed kernel images
sys-apps/kexec-tools:xen - Enable extended xen support
sys-apps/kmod:lzma - Enable support for XZ compressed modules
sys-apps/kmod:pkcs7 - Enable PKCS#7 signature parsing for modinfo.
sys-apps/kmod:tools - Install module loading/unloading tools.
sys-apps/kmod:zlib - Enable support for gzipped modules
sys-apps/kmscon:drm - Enable Linux DRM for backend
sys-apps/kmscon:fbdev - Enable Linux FBDev for backend
sys-apps/kmscon:pango - Enable pango font rendering
sys-apps/kmscon:pixman - Enable pixman font rendering
sys-apps/kmscon:systemd - Enable multiseat support via systemd
sys-apps/linux-misc-apps:usbip - Include USB/IP binaries to replace net-misc/usbip
sys-apps/lm-sensors:contrib - Installs user contributed configuration files so you don't need to find settings on your own for your system if somebody else has already created such a configuration for sensors/mainboards you are using.
sys-apps/lm-sensors:sensord - Enable sensord - a daemon that can be used to periodically log sensor readings from hardware health-monitoring chips
sys-apps/man-db:manpager - Enable manpager wrapper for colorizing output
sys-apps/memtest86+:bios32 - Compile a BIOS-bootable 32bit memtest image
sys-apps/memtest86+:bios64 - Compile a BIOS-bootable 64bit memtest image
sys-apps/memtest86+:boot - Install to /boot in addition to /usr/share/memtest86+/
sys-apps/memtest86+:iso32 - Compile a 32bit ISO image
sys-apps/memtest86+:iso64 - Compile a 64bit ISO image
sys-apps/memtest86+:uefi32 - Compile a EFI32-bootable 32bit memtest image
sys-apps/memtest86+:uefi64 - Compile a UEFI-bootable 64bit memtest image
sys-apps/moreutils:perl - Install scripts written in Perl
sys-apps/net-tools:arp - build the arp and rarp tools (for manipulating the ARP cache)
sys-apps/net-tools:hostname - build the hostname and dnsdomainname tools
sys-apps/net-tools:plipconfig - build the plipconfig tool (for working with old PLIP hardware)
sys-apps/net-tools:slattach - build the slattach tool (for working with old serial ports)
sys-apps/nvme-cli:json - Support JSON output via dev-libs/json-c
sys-apps/nvme-cli:pdc - Set default Persistent Discovery Controllers behavior
sys-apps/openrazer:client - Build the OpenRazer daemon client
sys-apps/openrazer:daemon - Build the OpenRazer daemon service
sys-apps/openrc:bash - enable the use of bash in service scripts (experimental)
sys-apps/openrc:netifrc - enable Gentoo's network stack (net.* scripts)
sys-apps/openrc:newnet - enable the new network stack (experimental)
sys-apps/openrc:s6 - install s6-linux-init
sys-apps/openrc:sysv-utils - Install sysvinit compatibility scripts for halt, init, poweroff, reboot and shutdown
sys-apps/openrc:sysvinit - control the dependency on sysvinit (experimental)
sys-apps/openrc-navi:bash - enable the use of bash in service scripts (experimental)
sys-apps/openrc-navi:netifrc - enable Gentoo's network stack (net.* scripts)
sys-apps/openrc-navi:newnet - enable the new network stack (experimental)
sys-apps/openrc-navi:s6 - install s6-linux-init
sys-apps/openrc-navi:sysv-utils - Install sysvinit compatibility scripts for halt, init, poweroff, reboot and shutdown
sys-apps/openrc-navi:sysvinit - control the dependency on sysvinit (experimental)
sys-apps/pciutils:dns - Enable support for querying the central database of PCI IDs using DNS
sys-apps/pciutils:kmod - Enable sys-apps/kmod support for the -k switch in lspci command
sys-apps/pciutils:zlib - Support compressed pci.ids database
sys-apps/pcmciautils:staticsocket - Add support for static sockets
sys-apps/pcsc-lite:embedded - limit RAM and CPU ressources by disabling features
sys-apps/pcsc-lite:libusb - Use dev-libs/libusb detection to hotplug new smartcard readers. This flag should only be enabled if you're running a non-Linux kernel or you don't want to use udev.
sys-apps/pcsc-lite:policykit - Uses sys-auth/polkit to restrict access to smartcard readers or smartcards to given users.
sys-apps/pcsc-lite:udev - Use virtual/libudev rules to handle devices' permissions and hotplug support. Unless you know what you're doing do not disable this flag on Linux kernels. This is provided as an option for completeness.
sys-apps/pcsc-tools:network-cron - Install a monthly cronjob to update the update-smartcard_list script
sys-apps/plocate:io-uring - Enable efficient I/O via sys-libs/liburing.
sys-apps/policycoreutils:audit - Enable support for sys-process/audit and use the audit_* functions (like audit_getuid instead of getuid())
sys-apps/portage:apidoc - Build html API documentation with sphinx-apidoc.
sys-apps/portage:gentoo-dev - Enable features required for Gentoo ebuild development.
sys-apps/portage:ipc - Use inter-process communication between portage and running ebuilds.
sys-apps/portage:native-extensions - Compiles native "C" extensions (speedups, instead of using python backup code). Currently includes libc-locales. This should only be temporarily disabled for some bootstrapping operations. Cross-compilation is not supported.
sys-apps/portage:rsync-verify - Enable full-tree cryptographic verification of Gentoo repository rsync checkouts using app-portage/gemato.
sys-apps/portage:xattr - Preserve extended attributes (filesystem-stored metadata) when installing files. Usually only required for hardened systems.
sys-apps/ppc64-diag:rtas - Add support for the Run Time Abstraction Services (RTAS)
sys-apps/proot:care - Build dynamic CARE binary (more info - https://proot-me.github.io)
sys-apps/razercfg:gui - Installs GUI configuration utility and status bar applet. Requires dev-python/PyQt5
sys-apps/rng-tools:jitterentropy - Enable Jitter RNG entropy support
sys-apps/rng-tools:nistbeacon - Enable NIST beacon entropy support
sys-apps/rng-tools:pkcs11 - Enable PKCS11 entropy support
sys-apps/rng-tools:qrypt - Enable qrypt beacon entropy support
sys-apps/rng-tools:rtlsdr - Enable atmospheric-static entropy support with net-wireless/rtl-sdr
sys-apps/s390-tools:cryptsetup - build the zkey-cryptsetup utility (requires USE=openssl)
sys-apps/s390-tools:fuse - build cmsfs-fuse to read files stored on a z/VM CMS disk
sys-apps/s390-tools:ncurses - build hyptop monitoring program
sys-apps/s390-tools:openssl - build the zkey utility
sys-apps/s390-tools:pfm - build the cpacfstats tool
sys-apps/s390-tools:zlib - build the zgetdump and dump2tar utilities
sys-apps/s6:execline - enable support for dev-lang/execline
sys-apps/s6-linux-init:sysv-utils - Install sysvinit compatibility symlinks for telinit, halt, poweroff, reboot, and shutdown
sys-apps/sandbox:nnp - Enable NO_NEW_PRIVS which blocks set*id programs from gaining privileges (e.g. sudo)
sys-apps/shadow:su - build the su program
sys-apps/smartmontools:caps - Build against sys-libs/libcap-ng to allow smartd to drop its privileges.
sys-apps/smartmontools:daemon - Install the monitoring daemon (smartd) and associated scripts.
sys-apps/smartmontools:update-drivedb - Install a script to update the drivedb file.
sys-apps/smc-sum:module - Install Supermicro's kernel module.
sys-apps/superdiag:iso - Install an iso image, which can be used with sys-apps/smc-sum.
sys-apps/superdiag:usb - Install all files, which are needed for an installation on an usb thumb drive.
sys-apps/systemd:audit - Enable support for sys-process/audit
sys-apps/systemd:boot - Enable EFI boot manager and stub loader
sys-apps/systemd:bpf - Enable BPF support for sandboxing and firewalling.
sys-apps/systemd:cgroup-hybrid - Default to hybrid (legacy) cgroup hierarchy instead of unified (modern).
sys-apps/systemd:cryptsetup - Enable cryptsetup tools (includes unit generator for crypttab)
sys-apps/systemd:curl - Enable support for uploading journals
sys-apps/systemd:dns-over-tls - Enable DNS-over-TLS support
sys-apps/systemd:elfutils - Enable coredump stacktraces in the journal
sys-apps/systemd:fido2 - Enable FIDO2 support
sys-apps/systemd:gcrypt - Enable use of dev-libs/libgcrypt for various features
sys-apps/systemd:homed - Enable portable home directories
sys-apps/systemd:http - Enable embedded HTTP server in journald
sys-apps/systemd:importd - Enable import daemon
sys-apps/systemd:iptables - Use libiptc from net-firewall/iptables for NAT support in systemd-networkd; this is used only if the running kernel does not support nftables
sys-apps/systemd:kernel-install - Enable kernel-install
sys-apps/systemd:kmod - Enable kernel module loading via sys-apps/kmod
sys-apps/systemd:lz4 - Enable lz4 compression for the journal
sys-apps/systemd:openssl - Enable use of dev-libs/openssl for various features
sys-apps/systemd:pkcs11 - Enable PKCS#11 support for cryptsetup and homed
sys-apps/systemd:pwquality - Enable password quality checking in homed
sys-apps/systemd:qrcode - Enable qrcode output support in journal
sys-apps/systemd:resolvconf - Install resolvconf symlink for systemd-resolve
sys-apps/systemd:sysv-utils - Install sysvinit compatibility symlinks and manpages for init, telinit, halt, poweroff, reboot, runlevel, and shutdown
sys-apps/systemd:tpm - Enable TPM support
sys-apps/systemd:ukify - Enable systemd-ukify
sys-apps/systemd:vanilla - Disable Gentoo-specific behavior and compatibility quirks
sys-apps/systemd:xkb - Depend on x11-libs/libxkbcommon to allow logind to control the X11 keymap
sys-apps/systemd-utils:boot - Enable systemd-boot (UEFI boot manager)
sys-apps/systemd-utils:kernel-install - Enable kernel-install
sys-apps/systemd-utils:kmod - Enable kernel module loading via sys-apps/kmod
sys-apps/systemd-utils:sysusers - Enable systemd-sysusers
sys-apps/systemd-utils:tmpfiles - Enable systemd-tmpfiles
sys-apps/systemd-utils:udev - Enable systemd-udev (userspace device manager)
sys-apps/systemd-utils:ukify - Enable systemd-ukify
sys-apps/tcp-wrappers:netgroups - Support matching NIS (host) netgroup names via the @netgroup syntax (if you don't know what this means, you most likely do not need it)
sys-apps/texinfo:standalone - Build standalone version that survives all Portage bugs
sys-apps/usbguard:umockdev - Enables support for dev-util/umockdev
sys-apps/usermode-utilities:fuse - Build tools (currently umlmount) needing fuse
sys-apps/util-linux:audit - Use sys-process/audit to emit audit messages about system changes
sys-apps/util-linux:caps - build setpriv helper (run programs with diff capabilities)
sys-apps/util-linux:cramfs - build mkfs/fsck helpers for cramfs filesystems
sys-apps/util-linux:cryptsetup - Use sys-fs/cryptsetup to have built-in dm-verity in libmount
sys-apps/util-linux:fdformat - build fdformat (floppy disk format)
sys-apps/util-linux:hardlink - build hardlink program
sys-apps/util-linux:kill - build the kill program
sys-apps/util-linux:logger - build the logger program
sys-apps/util-linux:pam - build runuser helper
sys-apps/util-linux:rtas - Add support for the Run Time Abstraction Services (RTAS)
sys-apps/util-linux:su - build the su program
sys-apps/util-linux:suid - Install some programs with suid bit set to provide additional functionality. mount/umount: non-root users may mount/umount devices wall/write: non-root users can notify other users su: non-root users may become root
sys-apps/util-linux:tty-helpers - install the mesg/wall/write tools for talking to local users
sys-apps/util-linux:uuidd - build uuidd daemon
sys-apps/watchdog:nfs - enable support for checking nfs mounts
sys-apps/xdg-desktop-portal:flatpak - Enable sys-apps/flatpak integration
sys-apps/xdg-desktop-portal:seccomp - Use sys-apps/bubblewrap (which requires seccomp) to sandbox some functionality like icon handling
sys-apps/xinetd:rpc - support RPC services
sys-auth/elogind:cgroup-hybrid - Use hybrid cgroup hierarchy instead of unified (OpenRC's default).
sys-auth/munge:gcrypt - Use libgcrypt instead of openssl
sys-auth/nss-pam-ldapd:pynslcd - Install the python implementation along with the standard implementation
sys-auth/nss-pam-ldapd:utils - Install the command-line utilities
sys-auth/oath-toolkit:pam - Build PAM module for pluggable login authentication for OATH
sys-auth/pam_mktemp:prevent-removal - If supported, set EXT2_APPEND_FL on /tmp/.private to prevent temporary directories from being removed
sys-auth/pam_mysql:openssl - Use OpenSSL for md5 and sha1 support
sys-auth/pam_u2f:debug - Enable debug messages using the pam logging macros.
sys-auth/pambase:debug - Enable debug information logging on syslog(3) for all the modules supporting this in the system authentication and system login stacks.
sys-auth/pambase:elogind - Use pam_elogind module to register user sessions with elogind.
sys-auth/pambase:homed - Use pam_systemd_home module to manage home directories with the systemd-homed service
sys-auth/pambase:minimal - Disables the standard PAM modules that provide extra information to users on login; this includes pam_lastlog, pam_motd, pam_mail and other similar modules. This might not be a good idea on a multi-user system but could reduce slightly the overhead on single-user non-networked systems.
sys-auth/pambase:mktemp - Enable pam_mktemp module on system auth stack for session handling. This module creates a private temporary directory for the user, and sets TMP and TMPDIR accordingly.
sys-auth/pambase:nullok - Enable the nullok option with the pam_unix module. This allows people to login with blank passwords.
sys-auth/pambase:pam_krb5 - Enable pam_krb5 module on system auth stack, as an alternative to pam_unix. If Kerberos authentication succeeds, only pam_unix will be ignorde, and all the other modules will proceed as usual, including Gnome Keyring and other session modules. It requires sys-libs/pam as PAM implementation.
sys-auth/pambase:pam_ssh - Enable pam_ssh module on system auth stack for authentication and session handling. This module will accept as password the passphrase of a private SSH key (one of ~/.ssh/id_rsa, ~/.ssh/id_dsa or ~/.ssh/identity), and will spawn an ssh-agent instance to cache the open key.
sys-auth/pambase:passwdqc - Enable pam_passwdqc module on system auth stack for password quality validation. This module produces warnings, rejecting or providing example passwords when changing your system password. It is used by default by OpenWall GNU/*/Linux and by FreeBSD.
sys-auth/pambase:pwhistory - Enable pam_pwhistory module on system auth stack to save the last passwords for each user in order to force password change history and keep the user from alternating between the same password too frequently.
sys-auth/pambase:pwquality - Enable pam_pwquality module on system auth stack for passwd quality validation. It is used by default by Fedora GNU/*/Linux.
sys-auth/pambase:securetty - Enable pam_securetty module in the login stack. Not generally relevant anymore as the login stack only refers to local logins and local terminals imply secure access in the first place.
sys-auth/pambase:sha512 - Switch Linux-PAM's pam_unix module to use sha512 for passwords hashes rather than MD5. This option requires sys-libs/pam version 1.0.1 built against sys-libs/glibc version 2.7, if it's built against an earlier version, it will silently be ignored, and MD5 hashes will be used. All the passwords changed after this USE flag is enabled will be saved to the shadow file hashed using SHA512 function. The password previously saved will be left untouched. Please note that while SHA512-hashed passwords will still be recognised if the USE flag is removed, the shadow file will not be compatible with systems using an earlier glibc version.
sys-auth/pambase:sssd - Add System Security Services Daemon (sys-auth/sssd) support via pam_sss.
sys-auth/pambase:systemd - Use pam_systemd module to register user sessions in the systemd control group hierarchy.
sys-auth/pambase:yescrypt - Switch Linux-PAM's pam_unix module to use yescrypt for passwords hashes rather than MD5
sys-auth/polkit:daemon - Build polkitd in addition to libpolkit.
sys-auth/polkit:duktape - Use dev-lang/duktape instead of dev-lang/spidermonkey as JavaScript engine
sys-auth/polkit:systemd - Use sys-apps/systemd for session tracking
sys-auth/seatd:builtin - Enable embedded server in libseat
sys-auth/seatd:server - Enable standalone seatd server, replacement to (e)logind
sys-auth/ssh-ldap-pubkey:schema - Install a copy of the LPK schema, only needed on LDAP servers.
sys-auth/sssd:acl - Build and use the cifsidmap plugin
sys-auth/sssd:netlink - Add support for netlink protocol via dev-libs/libnl
sys-auth/sssd:nfsv4 - Add support for the nfsv4 idmapd plugin provided by net-fs/nfs-utils
sys-auth/sssd:samba - Add Privileged Attribute Certificate Support for Kerberos
sys-auth/sssd:subid - Support subordinate uid and gid ranges in FreeIPA
sys-auth/sssd:sudo - Build helper to let app-admin/sudo use sssd provided information
sys-auth/sssd:systemtap - Enable SystemTap/DTrace tracing
sys-block/f3:extra - Build the additional f3probe, f3brew and f3fix utility (requires sys-block/parted and virtual/udev)
sys-block/fio:aio - Enable AIO ioengine
sys-block/fio:curl - Enable HTTP engine for S3 and WebDav support support via net-misc/curl
sys-block/fio:glusterfs - Enable GlusterFS gfapi support via sys-cluster/glusterfs
sys-block/fio:gnuplot - Install tools for generating gnuplots
sys-block/fio:io-uring - Enable efficient I/O via sys-libs/liburing.
sys-block/fio:nfs - Enable NFS support
sys-block/fio:numa - Enable numa support
sys-block/fio:pandas - Install dependencies for complex python scripts
sys-block/fio:rbd - Enable Rados block device support via sys-cluster/ceph
sys-block/fio:rdma - Enable infiniband support via sys-cluster/rdma-core
sys-block/fio:tcmalloc - Link against dev-util/google-perftools by default which will speed up USE=rbd up to 20%
sys-block/fio:zbc - Enable ZBC & ZAC disks via sys-block/libzbc.
sys-block/gparted:wayland - Enable interim workaround to allow running GParted under Wayland by granting permission to the X11 display using x11-apps/xhost
sys-block/libfabric:efa - Enable Amazon EC2 Elastic Fabric Adapter provider
sys-block/libfabric:rocr - Enable Radeon Open Compute provider
sys-block/libfabric:usnic - Enable Cisco VIC (virtualized NIC) hardware on Cisco UCS server provider
sys-block/libfabric:verbs - Enable Linux Infiniband verbs provider
sys-block/nbd:netlink - Add support for netlink protocol via dev-libs/libnl
sys-block/nbdkit:ext2 - Enable the ext2 filter via sys-fs/e2fsprogs.
sys-block/nbdkit:libguestfs - Enable the app-emulation/libguestfs plugin.
sys-block/nbdkit:libssh - Enable the SSH plugin via net-libs/libssh.
sys-block/nbdkit:libvirt - Enable the app-emulation/libvirt plugin.
sys-block/nbdkit:nbd - Enable the nbd plugin via sys-libs/libnbd.
sys-block/nbdkit:torrent - Enable the torrent plugin via net-libs/libtorrent-rasterbar.
sys-block/nbdkit:zlib-ng - Use sys-libs/zlib-ng to handle zlib decompression.
sys-block/ndctl:libtracefs - Use dev-libs/libtracefs to build cxl-monitor binary
sys-block/open-iscsi:rdma - Support iSCSI over RDMA
sys-block/open-iscsi:tcp - Support iSCSI over TCP
sys-block/parted:debug - Enable debugging as encouraged by upstream: [The default configuration] includes --enable-debug (by default), which contains many assertions. Obviously, these "waste" space, but in the past, they have caught potentially dangerous bugs before they would have done damage, so we think it's worth it. Also, it means we get more bug reports ;)
sys-block/parted:device-mapper - Enable device-mapper support from sys-fs/lvm2 in parted
sys-block/partimage:nologin - Do not include login support when connecting partimaged
sys-block/perccli:uefi - Install UEFI variant as well
sys-block/sas2ircu:uefi - Install UEFI variant as well
sys-block/sas3flash:uefi - Install UEFI variant as well
sys-block/sas3ircu:uefi - Install EFI variant as well
sys-block/tgt:rbd - Add support for ceph block devices
sys-block/thin-provisioning-tools:io-uring - Enable experimental support for io-uring.
sys-boot/grub:device-mapper - Enable support for devmapper. Required for LUKS or LVM volume detection.
sys-boot/grub:efiemu - Build and install the efiemu runtimes
sys-boot/grub:fonts - Build and install fonts for the gfxterm module
sys-boot/grub:libzfs - Enable support for sys-fs/zfs
sys-boot/grub:mount - Build and install the grub-mount utility
sys-boot/grub:themes - Build and install GRUB themes (starfield)
sys-boot/grub:truetype - Build and install grub-mkfont conversion utility
sys-boot/lilo:device-mapper - Enable support for device-mapper from sys-fs/lvm2
sys-boot/lilo:minimal - Do not install the dolilo helper script
sys-boot/lilo:pxeserial - Avoid character echo on PXE serial console
sys-boot/plymouth:drm - Provides abstraction to the DRM drivers (intel, nouveau and vmwgfx at this moment)
sys-boot/plymouth:freetype - Build with freetype support (if enabled, used for encryption prompts)
sys-boot/plymouth:pango - Adds support for printing text on splash screen and text prompts, e.g. for password
sys-boot/plymouth:split-usr - Enable this if /bin and /usr/bin are separate directories
sys-boot/refind:btrfs - Builds the EFI binary btrfs filesystem driver
sys-boot/refind:ext2 - Builds the EFI binary ext2 filesystem driver
sys-boot/refind:ext4 - Builds the EFI binary ext4 filesystem driver
sys-boot/refind:hfs - Builds the EFI binary hfs filesystem driver
sys-boot/refind:iso9660 - Builds the EFI binary iso9660 filesystem driver
sys-boot/refind:ntfs - Builds the EFI binary ntfs filesystem driver
sys-boot/refind:reiserfs - Builds the EFI binary reiserfs filesystem driver
sys-boot/silo:tilo-only - Install only the tilo netboot tool
sys-boot/syslinux:bios - Enable BIOS support
sys-boot/syslinux:uefi - Enable UEFI support
sys-boot/vboot-utils:libzip - Use dev-libs/libzip.
sys-cluster/ceph:babeltrace - Add support for LTTng babeltrace
sys-cluster/ceph:cephfs - Build support for cephfs, a POSIX compatible filesystem built on top of ceph
sys-cluster/ceph:diskprediction - Enable local diskprediction module to predict disk failures
sys-cluster/ceph:dpdk - Enable DPDK messaging
sys-cluster/ceph:fuse - Build fuse client
sys-cluster/ceph:grafana - Install grafana dashboards
sys-cluster/ceph:jaeger - Enable jaegertracing and it's dependent libraries
sys-cluster/ceph:kafka - Rados Gateway's pubsub support for Kafka push endpoint
sys-cluster/ceph:lttng - Add support for LTTng
sys-cluster/ceph:mgr - Build the ceph-mgr daemon
sys-cluster/ceph:parquet - Support for s3 select on parquet objects
sys-cluster/ceph:pmdk - Enable PMDK libraries
sys-cluster/ceph:rabbitmq - Use rabbitmq-c to build rgw amqp push endpoint
sys-cluster/ceph:radosgw - Add radosgw support
sys-cluster/ceph:rbd-rwl - Enable librbd persistent write back cache
sys-cluster/ceph:rbd-ssd - Enable librbd persistent write back cache for SSDs
sys-cluster/ceph:rdma - Enable RDMA support via sys-cluster/rdma-core
sys-cluster/ceph:rgw-lua - Rados Gateway's support for dynamically adding lua packagess
sys-cluster/ceph:spdk - Enable SPDK user-mode storage driver toolkit
sys-cluster/ceph:system-boost - Use system dev-libs/boost instead of the bundled one
sys-cluster/ceph:uring - Build with support for sys-libs/liburing
sys-cluster/ceph:xfs - Add xfs support
sys-cluster/ceph:zbd - Enable sys-block/libzbd bluestore backend
sys-cluster/charliecloud:ch-image - Build the internal builder ch-image (previously named ch-grow)
sys-cluster/charm:ampi - Build implementation of MPI on top of Charm++
sys-cluster/charm:charmdebug - Enable the charm debugger
sys-cluster/charm:charmproduction - Optimize performance of Charm++ runtime
sys-cluster/charm:charmtracing - Enable tracing support in Charm++
sys-cluster/charm:cmkopt - Enable CMK optimisation
sys-cluster/charm:mlogft - Compile with Charm++ message logging fault tolerance support
sys-cluster/charm:numa - Support memory affinity with NUMA
sys-cluster/charm:syncft - Compile with Charm++ fault tolerance support
sys-cluster/charm:tcp - Use TCP (instead of UPD) for socket communication
sys-cluster/cluster-glue:ipmilan - Install the ipmilan plugin (requires sys-libs/openipmi)
sys-cluster/cluster-glue:libnet - Force use of net-libs/libnet
sys-cluster/corosync:augeas - Enable augeas support
sys-cluster/corosync:watchdog - Enable watchdog support
sys-cluster/drbd-utils:pacemaker - Enable Pacemaker integration
sys-cluster/drbd-utils:xen - Enable Xen integration
sys-cluster/galera:garbd - Install Galera Arbitrator - a stateless daemon which acts as a lightweight group member
sys-cluster/glusterfs:fuse - Add FUSE mount helper
sys-cluster/glusterfs:georeplication - Enable support for georeplication (requires dev-lang/python)
sys-cluster/glusterfs:ipv6 - Use IPv6 by default, requires libtirpc
sys-cluster/glusterfs:libtirpc - Build against net-libs/libtirpc for RPC support
sys-cluster/glusterfs:rsyslog - Install configuration snippet for app-admin/rsyslog
sys-cluster/glusterfs:uring - Control whether or not glusterfs is compiled with uring support or not.
sys-cluster/hpx:papi - Use dev-libs/papi for NaCl
sys-cluster/hpx:perftools - Use dev-util/google-perftools for memory allocation
sys-cluster/hpx:tbb - Use dev-cpp/tbb for memory allocation
sys-cluster/k3s:kubectl-symlink - Install a kubectl symlink that points to k3s.
sys-cluster/k3s:rootless - Enables dependencies for running in rootless mode.
sys-cluster/keepalived:bfd - compile with support for Bidirectional Forwarding Detection (BFD).
sys-cluster/keepalived:json - compile with signal to dump configuration and stats as JSON.
sys-cluster/keepalived:regex - compile with support for regex in health checks
sys-cluster/kronosnet:lzo2 - Add support for lzo2 compression
sys-cluster/kronosnet:nss - Add support for tls via nss
sys-cluster/kronosnet:openssl - Add support for tls via openssl
sys-cluster/legion:gasnet - Enable GASNet lib support
sys-cluster/legion:hwloc - Enable HWLoc lib support
sys-cluster/lmod:auto-swap - enable auto swapping of compiler
sys-cluster/lmod:cache - enable caching of modules
sys-cluster/lmod:duplicate-paths - allow duplicate entries in path
sys-cluster/minikube:libvirt - Build plugin for kvm
sys-cluster/mpich:mpi-threads - Enable MPI_THREAD_MULTIPLE
sys-cluster/mpich:romio - Build the ROMIO MPI-IO component
sys-cluster/nomad:ui - do not embed the ui in the binary
sys-cluster/openmpi:cma - Enable the CMA (Cross Memory Attach) MCA
sys-cluster/openmpi:libompitrace - Enable support for contributed package libompitrace
sys-cluster/openmpi:peruse - Enable PERUSE interface
sys-cluster/openmpi:romio - Build the ROMIO MPI-IO component
sys-cluster/pacemaker:smtp - Enable SMTP support via net-libs/libesmtp
sys-cluster/pmix:munge - Enable authentication via munge
sys-cluster/pmix:pmi - Build PMI1 and PMI2 interface
sys-cluster/rdma-core:lttng - Enable support for the LTTng tracer
sys-cluster/rdma-core:neigh - Enable iwpmd support
sys-cluster/rdma-core:python - Enable pyverbs support
sys-cluster/resource-agents:libnet - Force use of net-libs/libnet
sys-cluster/resource-agents:rgmanager - Install resources for rgmanager
sys-cluster/slurm:html - Build html documentation
sys-cluster/slurm:ipmi - Build support for collecting some ipmi stats
sys-cluster/slurm:json - Add support for json-persing via json-c
sys-cluster/slurm:multiple-slurmd - Allow multiple slurmd to run
sys-cluster/slurm:munge - Enable authentication via munge
sys-cluster/slurm:numa - Add NUMA awareness
sys-cluster/slurm:nvml - Enable the NVML device discovery
sys-cluster/slurm:ofed - Add Infiniband support via ofed
sys-cluster/slurm:slurmdbd - Install SQL server for slurmdbd
sys-cluster/slurm:slurmrestd - Enable interface to Slurm via REST API
sys-cluster/slurm:torque - Enable perl scripts that emulates pbs (qstat, qsub etc.)
sys-cluster/slurm:ucx - Enable Unified Communication X library support
sys-cluster/slurm:yaml - Enable YAML support
sys-cluster/spark-bin:scala211 - Install Spark JARs pre-built with Scala 2.11.
sys-cluster/spark-bin:scala212 - Install Spark JARs pre-built with Scala 2.12.
sys-cluster/torque:autorun - Enable the AUTORUN_JOBS codebase
sys-cluster/torque:cgroups - Enable pbs_mom to use linux cgroups to isolate jobs
sys-cluster/torque:cpusets - Enable pbs_mom to utilize linux cpusets if available
sys-cluster/torque:munge - Enable authentication via munge
sys-cluster/torque:nvidia - Enable management of Nvidia GPUs
sys-cluster/torque:quickcommit - Enable the QUICKCOMMIT codebase
sys-cluster/torque:server - Enable compilation of pbs_server and pbs_sched
sys-cluster/ucx:numa - Add support for numa memory allocation
sys-cluster/vzctl:ploop - Add support for ploop devices via sys-cluster/ploop
sys-cluster/vzctl:vzmigrate - Add support for container migration
sys-devel/autogen:libopts - install the libopts tarball (a few packages want this for developing)
sys-devel/binutils:cet - Enable Intel Control-flow Enforcement Technology.
sys-devel/binutils:debuginfod - Enable debuginfod support via dev-libs/elfutils libdebuginfod
sys-devel/binutils:default-gold - Set ld to point to ld.gold instead of ld.bfd
sys-devel/binutils:gold - Build ld.gold linker
sys-devel/binutils:gprofng - Enable the next-generation gprofng profiler
sys-devel/binutils:multitarget - Adds support to binutils for cross compiling (does not work with gas)
sys-devel/binutils:pgo - Build binutils with Profile Guided Optimization (PGO) and LTO
sys-devel/binutils:plugins - Enable plugin support in tools
sys-devel/binutils-apple:classic - Use nm, otool, etc. from this ebuild instead of llvm-based tools
sys-devel/binutils-apple:lto - Add support for Link-Time Optimization with LLVM
sys-devel/binutils-config:native-symlinks - Install native symlinks like 'as' or 'ar' to /usr/bin. Otherwise keep only ${CTARGET}-as and friends.
sys-devel/binutils-hppa64:cet - Enable Intel Control-flow Enforcement Technology.
sys-devel/binutils-hppa64:debuginfod - Enable debuginfod support via dev-libs/elfutils libdebuginfod
sys-devel/binutils-hppa64:default-gold - Set ld to point to ld.gold instead of ld.bfd
sys-devel/binutils-hppa64:gold - Build ld.gold linker
sys-devel/binutils-hppa64:gprofng - Enable the next-generation gprofng profiler
sys-devel/binutils-hppa64:multitarget - Adds support to binutils for cross compiling (does not work with gas)
sys-devel/binutils-hppa64:pgo - Build binutils with Profile Guided Optimization (PGO) and LTO
sys-devel/binutils-hppa64:plugins - Enable plugin support in tools
sys-devel/bpf-toolchain:bin-symlinks - Symlink executables to usr/bin to be in default PATH (conflicts with crossdev bpf, and crossdev is preferable for a fully featured toolchain)
sys-devel/clang:extra - Build extra tools (clangd, clang-tidy and a few more)
sys-devel/clang:ieee-long-double - Use accelerated 128-bit IEEE long double ABI (ppc64le only)
sys-devel/clang:static-analyzer - Install the Clang static analyzer
sys-devel/clang-common:bootstrap-prefix - !!internal use only!! DO NOT SET THIS FLAG YOURSELF!, used for bootstrapping Gentoo Prefix
sys-devel/clang-common:cet - Enable support for control flow hijacking protection. On amd64, this provides Intel Control Flow Enforcement Technology (CET). Only provides benefits on newer CPUs. For Intel, the CPU must be at least as new as Tiger Lake. For AMD, it must be at least as new as Zen 3. This is harmless on older CPUs, but provides no benefit either.
sys-devel/clang-common:default-compiler-rt - Use compiler-rt + libunwind instead of libgcc as the default rtlib for clang
sys-devel/clang-common:default-libcxx - Use libc++ instead of libstdc++ as the default stdlib for clang
sys-devel/clang-common:default-lld - Use lld as the default linker for clang
sys-devel/clang-common:stricter - Default to stricter behavior known from newer clang versions, turning more warnings into errors
sys-devel/clang-runtime:compiler-rt - Install sys-libs/compiler-rt for -rtlib=compiler-rt
sys-devel/clang-runtime:libcxx - Install sys-libs/libcxx for -stdlib=libc++
sys-devel/clang-runtime:openmp - Install sys-libs/libomp for -fopenmp support
sys-devel/clang-runtime:sanitize - Enable compiler-rt sanitizer (-fsanitize*) support
sys-devel/clang-toolchain-symlinks:gcc-symlinks - Install symlinks for 'gcc' and 'g++' for extra compatibility.
sys-devel/clang-toolchain-symlinks:multilib-symlinks - Install symlinks for all ABI CHOSTs. Note that this can result in gcc being overrode for native builds, as well as conflict with crossdev if used for the same targets.
sys-devel/clang-toolchain-symlinks:native-symlinks - Install generic tool symlinks like 'cc' and 'c++', as well as ${CTARGET}-*. These symlinks are installed into slotted LLVM bindir, so they should not take precedence over symlinks installed into /usr/bin by sys-devel/gcc-config but they can be helpful for GCC-free setups.
sys-devel/crosstool-ng:dtc - Require sys-apps/dtc
sys-devel/crosstool-ng:lzip - Require app-arch/lzip
sys-devel/crosstool-ng:meson - Require dev-build/meson
sys-devel/crosstool-ng:ninja - Require app-alternatives/ninja
sys-devel/crosstool-ng:rsync - Require net-misc/rsync
sys-devel/crosstool-ng:wget - Require net-misc/wget
sys-devel/distcc:gssapi - Enable support for net-libs/libgssglue
sys-devel/gcc:ada - Build the ADA language (GNAT) frontend
sys-devel/gcc:cet - Enable support for control flow hijacking protection. On amd64, this provides Intel Control Flow Enforcement Technology (CET). On arm64, this provides Branch Target Identification (BTI) and Pointer Authentication Code (PAC) support. This is only effective on amd64 or arm64. Only provides benefits on newer CPUs. For Intel, the CPU must be at least as new as Tiger Lake. For AMD, it must be at least as new as Zen 3. This is harmless on older CPUs, but provides no benefit either. For ARM64, PAC was introduced in armv8.3-a, and BTI was introduced in armv8.5-a. When combined with USE=hardened on amd64, GCC will set -fcf-protection by default when building software. The effect is minimal on systems which do not support it, other than a possible small increase in codesize for the NOPs. The generated code is therefore compatible with i686 at the earliest. On arm64, GCC will set -mbranch-protection=standard by default when building software.
sys-devel/gcc:d - Enable support for the D programming language
sys-devel/gcc:debug - Enables GCC's 'checking' facility via --enable-checking=yes,extra,rtl. This adds checks to various compiler passes for integrity and input validation. This can help catch possible miscompilations early as well as latent bugs which could become real problems in future, but at the cost of slower compile times when using GCC. Unrelated to backtraces.
sys-devel/gcc:default-stack-clash-protection - Build packages with stack clash protection on by default as a hardening measure. This enables -fstack-clash-protection by default which protects against large memory allocations allowing stack smashing. May cause slightly increased codesize, but modern compilers have been adapted to optimize well for this case, as this mitigation is now quite common. See https://developers.redhat.com/blog/2020/05/22/stack-clash-mitigation-in-gcc-part-3 and https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt.
sys-devel/gcc:default-znow - Request full relocation on start from ld.so by default. This sets the -z,now (BIND_NOW) flag by default on all linker invocations. By resolving all dynamic symbols at application startup, parts of the program can be made read-only as a hardening measure. This is closely related to RELRO which is also separately enabled by default. In some applications with many unresolved symbols (heavily plugin based, for example), startup time may be impacted.
sys-devel/gcc:fixed-point - Enable fixed-point arithmetic support for MIPS targets in gcc (Warning: significantly increases compile time!)
sys-devel/gcc:go - Build the GCC Go language frontend.
sys-devel/gcc:graphite - Add support for the framework for loop optimizations based on a polyhedral intermediate representation
sys-devel/gcc:ieee-long-double - Use accelerated 128-bit IEEE long double ABI (ppc64le only)
sys-devel/gcc:jit - Enable libgccjit so other applications can embed gcc for Just-In-Time compilation.
sys-devel/gcc:libssp - Build SSP support into a dedicated library rather than use the code in the C library (DO NOT ENABLE THIS IF YOU DON'T KNOW WHAT IT DOES)
sys-devel/gcc:lto - Build using Link Time Optimizations (LTO). Note that GCC is always built with support for building other programs with LTO. This USE flag is for whether GCC itself is built and optimized with LTO.
sys-devel/gcc:modula2 - Build the GCC Modula-2 language frontend.
sys-devel/gcc:objc - Build support for the Objective C code language
sys-devel/gcc:objc++ - Build support for the Objective C++ language
sys-devel/gcc:objc-gc - Build support for the Objective C code language Garbage Collector
sys-devel/gcc:pgo - Build GCC using Profile Guided Optimization (PGO). GCC will build itself and then analyze the just-built binary and then rebuild itself using the data obtained from analysis of codepaths taken. It does not affect whether GCC itself supports PGO when building other software. This substantially increases the build time needed for building GCC itself.
sys-devel/gcc:rust - Build support for the Rust language, installs gccrs.
sys-devel/gcc:sanitize - Build support for various sanitizer functions (ASAN/TSAN/etc...) to find runtime problems in applications.
sys-devel/gcc:ssp - Build packages with stack smashing protection on by default
sys-devel/gcc:systemtap - enable systemtap static probe points
sys-devel/gcc:vtv - Build support for virtual table verification (a C++ hardening feature). This does not control whether GCC defaults to using VTV> Note that actually using VTV breaks ABI and hence the whole system must be built with -fvtable-verify.
sys-devel/gcc-apple:bootstrap - !DO NOT SET THIS FLAG YOURSELF! avoids need for autoconf during bootstrap stage2
sys-devel/gcc-apple:objc - Build support for the Objective C code language
sys-devel/gcc-apple:objc++ - Build support for the Objective C++ language
sys-devel/gcc-config:cc-wrappers - Install and manage 'cc' and 'f77' wrappers in /usr/bin. Otherwise ignore them.
sys-devel/gcc-config:native-symlinks - Install native symlinks like 'gcc' or 'g++' to /usr/bin. Otherwise keep only ${CTARGET}-gcc and friends.
sys-devel/gettext:git - When running `autopoint`, use git to store the internal development files; this requires git at runtime, but will be faster/smaller than raw archives
sys-devel/lld-toolchain-symlinks:multilib-symlinks - Install symlinks for all ABI CHOSTs. Note that this can result in gcc being overrode for native builds, as well as conflict with crossdev if used for the same targets.
sys-devel/lld-toolchain-symlinks:native-symlinks - Install generic 'ld' symlink, as well as ${CTARGET}-ld. These symlinks are installed into slotted LLVM bindir, so they should not take precedence over symlinks installed into /usr/bin by sys-devel/binutils-config but they can be helpful for binutils-free setups.
sys-devel/llvm:binutils-plugin - Build the binutils plugin
sys-devel/llvm:debuginfod - Install llvm-debuginfod (requires net-misc/curl and dev-cpp/cpp-httplib)
sys-devel/llvm:doc - Build and install the HTML documentation and regenerate the man pages
sys-devel/llvm:exegesis - Enable performance counter support for llvm-exegesis tool that can be used to measure host machine instruction characteristics
sys-devel/llvm:ncurses - Support querying terminal properties using ncurses' terminfo
sys-devel/llvm:xar - Support dumping LLVM bitcode sections in Mach-O files (uses app-arch/xar)
sys-devel/llvm:z3 - Enable support for sci-mathematics/z3 constraint solver
sys-devel/llvm-toolchain-symlinks:multilib-symlinks - Install symlinks for all ABI CHOSTs. Note that this can result in gcc being overrode for native builds, as well as conflict with crossdev if used for the same targets.
sys-devel/llvm-toolchain-symlinks:native-symlinks - Install generic tool symlinks like 'objdump' and 'ranlib', as well as ${CTARGET}-*. These symlinks are installed into slotted LLVM bindir, so they should not take precedence over symlinks installed into /usr/bin by sys-devel/binutils-config but they can be helpful for binutils-free setups.
sys-devel/sparse:gtk - Build the test-inspect utility (requires x11-libs/gtk+:3)
sys-devel/sparse:llvm - Build the sparse-llvm utility
sys-devel/sparse:xml - Build the c2xml utility (requires dev-libs/libxml2)
sys-fabric/mstflint:adb-generic-tools - Enable compiling the following tools: mstreg and mstlink
sys-fabric/mstflint:inband - Enable firmware updates for Mellanox SwitchX and ConnectIB devices
sys-fabric/opensm:tools - Install ssld extra tool
sys-firmware/broadcom-bt-firmware:compress-xz - Compress firmware using xz (app-arch/xz-utils) before installation
sys-firmware/broadcom-bt-firmware:compress-zstd - Compress firmware using zstd (app-arch/zstd) before installation
sys-firmware/intel-microcode:hostonly - Only install ucode(s) supported by currently available (=online) processor(s)
sys-firmware/intel-microcode:initramfs - Install a small initramfs for use with CONFIG_MICROCODE_EARLY
sys-firmware/intel-microcode:split-ucode - Install the split binary ucode files (used by the kernel directly)
sys-firmware/intel-microcode:vanilla - Only install microcode updates from Intel's official microcode tarball
sys-firmware/ipxe:binary - Use pre-built binaries
sys-firmware/ipxe:iso - Build a bootable ISO for using PXE
sys-firmware/ipxe:lkrn - Build a linux kernel bootable file for using with grub/etc...
sys-firmware/ipxe:qemu - Build the required PXE ROM images for app-emulation/qemu
sys-firmware/ipxe:uefi32 - Build a 32bit UEFI program for using PXE
sys-firmware/ipxe:uefi64 - Build a 64bit UEFI program for using PXE
sys-firmware/ipxe:undi - Build a Universal Network Device Interface driver chainloading your existing PXE NIC into iPXE
sys-firmware/ipxe:usb - Build a bootable USB image for using PXE
sys-firmware/ipxe:vmware - Build the PXE ROM images that VMWare uses
sys-firmware/seabios:binary - Use official upstream pre-built binaries
sys-firmware/seabios:seavgabios - Include SeaVGABIOS binaries (replacement for vgabios)
sys-firmware/sgabios:binary - Use pre-built binaries
sys-firmware/sigrok-firmware-fx2lafw:binary - Use official upstream pre-built binaries
sys-firmware/sof-firmware:tools - Tools to interact with sof firmwares (upstream expects them to be present, but allow to skip them for systems not able to install needed dependencies)
sys-firmware/vgabios:binary - Use official upstream pre-built binaries (only default and cirrus images)
sys-fs/android-file-transfer-linux:fuse - Add FUSE mount helper
sys-fs/android-file-transfer-linux:zune - Enable support for Microsoft Zune
sys-fs/avfs:webdav - Allow mounting WebDAV shares via net-libs/neon
sys-fs/bcachefs-tools:fuse - Enable bcachefs FUSE support (experimental!)
sys-fs/btrfs-progs:convert - Build ext2 conversion utility (btrfs-convert)
sys-fs/btrfs-progs:experimental - Enable unstable and experimental features and install btrfs-corrupt-block, as needed by xfstests
sys-fs/btrfs-progs:reiserfs - Enable reiserfs support in btrfs-convert tool.
sys-fs/btrfs-progs:static - Build static binaries in addition to the dynamic ones
sys-fs/btrfsmaintenance:systemd - Enable systemd services and timers instead of cron timers
sys-fs/cryptmount:argv0switch - Default action given by progname.
sys-fs/cryptmount:cswap - Enable support for encrypted swap.
sys-fs/cryptmount:fsck - Check filesystems before mounting.
sys-fs/cryptmount:gcrypt - Support libgcrypt-encryption of keys.
sys-fs/cryptmount:largefile - Enable support for large files.
sys-fs/cryptmount:luks - Enable key management via LUKS
sys-fs/cryptmount:mount - Use systemd mount/umount for operations.
sys-fs/cryptmount:openssl - Support openssl-encryption of keys.
sys-fs/cryptsetup:argon2 - Enable password hashing algorithm from app-crypt/argon2
sys-fs/cryptsetup:fips - Enable FIPS mode restrictions
sys-fs/cryptsetup:gcrypt - Use dev-libs/libgcrypt crypto backend
sys-fs/cryptsetup:kernel - Use kernel crypto backend (mainly for embedded systems)
sys-fs/cryptsetup:nettle - Use dev-libs/nettle crypto backend
sys-fs/cryptsetup:openssl - Use dev-libs/openssl crypto backend
sys-fs/cryptsetup:pwquality - Use dev-libs/libpwquality for password quality checking
sys-fs/cryptsetup:ssh - Build cryptsetup-ssh for experimental support of token via SSH-server
sys-fs/cryptsetup:urandom - Use /dev/urandom instead of /dev/random
sys-fs/dmraid:intel-led - Enable Intel LED support
sys-fs/dmraid:led - Enable LED support
sys-fs/dmraid:mini - Create a minimal binary suitable for early boot environments
sys-fs/dosfstools:compat - Install symlinks for legacy names of the tools
sys-fs/e2fsprogs:archive - Add support for mke2fs to read a tarball as input. This allows not needing privileges. Needs app-arch/libarchive.
sys-fs/e2fsprogs:cron - Install e2scrub_all cron script
sys-fs/e2fsprogs:fuse - Build fuse2fs, a FUSE file system client for ext2/ext3/ext4 file systems
sys-fs/e2fsprogs:tools - Build extfs tools (mke2fs, e2fsck, tune2fs, etc.)
sys-fs/ecryptfs-utils:gpg - Enable app-crypt/gnupg key module
sys-fs/ecryptfs-utils:openssl - Enable dev-libs/openssl key module
sys-fs/ecryptfs-utils:pkcs11 - Enable PKCS#11 (Smartcards) key module
sys-fs/ecryptfs-utils:tpm - Enable support for Trusted Platform Module (TPM) using app-crypt/trousers
sys-fs/erofs-utils:fuse - Builds erofsfuse (requires sys-fs/fuse).
sys-fs/erofs-utils:libdeflate - Use app-arch/libdeflate rather than sys-libs/zlib for handling deflate compression.
sys-fs/erofs-utils:uuid - Enables UUID support via sys-apps/util-linux.
sys-fs/ext4magic:expert-mode - Builds ext4magic with expert mode. Highly useful in recovering data from a corrupted filesystem
sys-fs/ext4magic:file-attr - Enable the recovery of file attributes (append, immutable, nodump etc)
sys-fs/lessfs:filelog - Enable the ability to log to a file instead of syslog
sys-fs/lessfs:memtrace - Enable leefs to create a report regarding the memory allocation. This feature should be used for debugging purposes to avoid performance degradation
sys-fs/loop-aes:extra-ciphers - Enable extra ciphers
sys-fs/loop-aes:keyscrub - Protects the encryption key in memory but takes more cpu resources
sys-fs/lvm2:lvm - Build all of LVM2 including daemons and tools like lvchange, not just the device-mapper library (for other packages to use). If your system uses LVM2 for managing disks and partitions, enable this flag.
sys-fs/lvm2:sanlock - Enable lvmlockd with support for sanlock
sys-fs/lvm2:thin - Support for thin volumes
sys-fs/mdadm:corosync - Support for corosync cluster engine
sys-fs/mtd-utils:ubifs - Build UBIFS tools
sys-fs/mtpfs:mad - Enable handling of MP3's metadata
sys-fs/ntfs3g:fuse - Enable ntfs-3g FUSE driver
sys-fs/ntfs3g:mount-ntfs - Install mount.ntfs symlink
sys-fs/ntfs3g:ntfsdecrypt - Build and install the ntfsdecrypt application.
sys-fs/ntfs3g:ntfsprogs - Enable ntfsprogs
sys-fs/quota:netlink - Compile daemon receiving quota messages via netlink
sys-fs/quota:rpc - Enable quota interaction via RPC
sys-fs/squashfs-tools-ng:tools - Build the gensquashfs, rdsquashfs, sqfs2tar, sqfsdiff, and tar2sqfs tools
sys-fs/udisks:daemon - Build the system daemon, not just the client tool
sys-fs/udisks:elogind - Use sys-auth/elogind for session tracking
sys-fs/udisks:lvm - Add support for Logical Volume Management via sys-fs/lvm2.
sys-fs/udisks:systemd - Support sys-apps/systemd's logind
sys-fs/udisks:vdo - Enable Virtual Data Optimizer support.
sys-fs/udisks:zram - Enable ZRAM support (requires sys-apps/systemd).
sys-fs/zfs:kernel-builtin - Disable dependency on sys-fs/zfs-kmod under the assumption that ZFS is part of the kernel source tree
sys-fs/zfs:minimal - Don't install python scripts (arcstat, dbufstat etc) and avoid dependency on dev-lang/python
sys-fs/zfs:pam - Install zfs_key pam module, for automatically loading zfs encryption keys for home datasets
sys-fs/zfs:rootfs - Enable dependencies required for booting off a pool containing a rootfs
sys-fs/zfs:test-suite - Install regression test suite
sys-fs/zfs-auto-snapshot:cron - Install /etc/cron.* files
sys-fs/zfs-auto-snapshot:default-exclude - Only take snapshots of datasets with com.sun:auto-snapshot=true property set
sys-fs/zfs-kmod:dist-kernel-cap - Prevents upgrading to an unsupported kernel version when combined with USE=dist-kernel
sys-fs/zfs-kmod:rootfs - Pull dependencies and check kernel options required for root-on-zfs
sys-kernel/asahi-sources:rust - Pull in the Rust For Linux dependencies
sys-kernel/asahi-sources:symlink - Automatically symlink the kernel sources to /usr/src/linux
sys-kernel/genkernel:firmware - Prefer system firmware sys-kernel/linux-firmware over local copy.
sys-kernel/gentoo-kernel:experimental - Apply experimental patches; for more information, see "https://wiki.gentoo.org/wiki/Project:Kernel/Experimental".
sys-kernel/gentoo-kernel:generic-uki - Build and install a generic initramfs and Unified Kernel Image, this is intended for building binpkgs with a pre-generated UKI included (EXPERIMENTAL).
sys-kernel/gentoo-kernel:hardened - Use selection of hardening options recommended by Kernel Self Protection Project
sys-kernel/gentoo-kernel:initramfs - Build initramfs along with the kernel.
sys-kernel/gentoo-kernel-bin:generic-uki - Install a prebuilt generic initramfs and Unified Kernel Image (EXPERIMENTAL).
sys-kernel/gentoo-kernel-bin:initramfs - Build initramfs along with the kernel.
sys-kernel/gentoo-sources:experimental - Apply experimental patches; for more information, see "https://wiki.gentoo.org/wiki/Project:Kernel/Experimental".
sys-kernel/installkernel:dracut - Generate an initramfs or UKI on each kernel installation
sys-kernel/installkernel:efistub - EXPERIMENTAL: Update UEFI configuration on each kernel installation
sys-kernel/installkernel:grub - Re-generate grub.cfg on each kernel installation, used grub.cfg is overridable with GRUB_CFG env var
sys-kernel/installkernel:refind - Install a Gentoo icon for rEFInd alongside the (unified) kernel image, used icon is overridable with REFIND_ICON env var
sys-kernel/installkernel:systemd - Use systemd's kernel-install to install kernels, overridable with SYSTEMD_KERNEL_INSTALL env var
sys-kernel/installkernel:systemd-boot - Use systemd-boot's native layout by default
sys-kernel/installkernel:ugrd - Generate an initramfs using UGRD on each kernel installation
sys-kernel/installkernel:uki - Install UKIs to ESP/EFI/Linux for EFI stub booting and/or bootloaders with support for auto-discovering UKIs
sys-kernel/installkernel:ukify - Build an UKI with systemd's ukify on each kernel installation
sys-kernel/kpatch:contrib - Enable contrib kpatch services files.
sys-kernel/kpatch:kmod - Enable a kernel module (.ko file) which provides an interface for the patch modules to register new functions for replacement.
sys-kernel/kpatch:kpatch - Enable a command-line tool which allows a user to manage a collection of patch modules.
sys-kernel/kpatch:kpatch-build - Enable tools which convert a source diff patch to a patch module.
sys-kernel/linux-firmware:compress-xz - Compress firmware using xz (app-arch/xz-utils) before installation
sys-kernel/linux-firmware:compress-zstd - Compress firmware using zstd (app-arch/zstd) before installation
sys-kernel/linux-firmware:deduplicate - Create symlinks for all firmware that is duplicate using rdfind
sys-kernel/linux-firmware:initramfs - Create and install initramfs for early microcode loading in /boot (only AMD for now)
sys-kernel/linux-firmware:redistributable - Install also non-free (but redistributable) firmware files
sys-kernel/linux-firmware:savedconfig - Allows individual selection of firmware files
sys-kernel/linux-firmware:unknown-license - Install firmware files whose license is unknown
sys-kernel/mips-sources:experimental - Apply experimental (80xx) patches.
sys-kernel/mips-sources:ip27 - Enables additional support for SGI Origin (IP27)
sys-kernel/mips-sources:ip28 - Enables additional support for SGI Indigo2 Impact R10000 (IP28)
sys-kernel/mips-sources:ip30 - Enables support for SGI Octane (IP30, 'Speedracer')
sys-kernel/rt-sources:deblob - Remove binary blobs from kernel sources to provide libre license compliance.
sys-kernel/scx:openrc - Enable support for sys-apps/openrc
sys-kernel/vanilla-kernel:initramfs - Build initramfs along with the kernel.
sys-libs/binutils-libs:64-bit-bfd - Support 64-bit targets even on 32-bit hosts (is ignored on 64-bit hosts)
sys-libs/binutils-libs:cet - Enable Intel Control-flow Enforcement Technology.
sys-libs/binutils-libs:multitarget - Enable all possible targets in libbfd
sys-libs/compiler-rt:clang - Force building using installed clang (rather than the default CC/CXX).
sys-libs/compiler-rt-sanitizers:asan - Build Address Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:cfi - Build Control Flow Integrity runtime.
sys-libs/compiler-rt-sanitizers:clang - Force building using installed clang (rather than the default CC/CXX).
sys-libs/compiler-rt-sanitizers:ctx-profile - Build ctx profiling runtime.
sys-libs/compiler-rt-sanitizers:dfsan - Build Data Flow Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:gwp-asan - Build GWP-ASAN runtime.
sys-libs/compiler-rt-sanitizers:hwasan - Build Hardware ASAN runtime.
sys-libs/compiler-rt-sanitizers:libfuzzer - Build fuzzing runtime.
sys-libs/compiler-rt-sanitizers:lsan - Build Leak Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:memprof - Build memory profiler runtime.
sys-libs/compiler-rt-sanitizers:msan - Build Memory Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:nsan - Build Numerical Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:orc - Build ORC runtime.
sys-libs/compiler-rt-sanitizers:profile - Build profiling runtime.
sys-libs/compiler-rt-sanitizers:rtsan - Build Realtime Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:safestack - Build SafeStack runtime.
sys-libs/compiler-rt-sanitizers:scudo - Build Scudo Hardened Allocator.
sys-libs/compiler-rt-sanitizers:shadowcallstack - Build ShadowCallStack.
sys-libs/compiler-rt-sanitizers:tsan - Build Thread Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:ubsan - Build Undefined Behavior Sanitizer runtime.
sys-libs/compiler-rt-sanitizers:xray - Build XRay runtime.
sys-libs/freeipmi:nagios - Install a nagios plugin to check sensors' status.
sys-libs/freeipmi:without-root - Configure whether or not to check for root access in ipmi tools.
sys-libs/gdbm:berkdb - enable compatibility layer for UNIX-like dbm and ndbm interfaces
sys-libs/glibc:cet - Enable Intel Control-flow Enforcement Technology (needs binutils 2.29 and gcc 8)
sys-libs/glibc:clone3 - Enable the new clone3 syscall within glibc. Can be disabled to allow compatibility with older Electron applications.
sys-libs/glibc:compile-locales - build *all* locales in src_install; this is generally meant for stage building only as it ignores /etc/locale.gen file and can be pretty slow
sys-libs/glibc:crypt - build and install libcrypt and crypt.h
sys-libs/glibc:debug - When USE=hardened, allow fortify/stack violations to dump core (SIGABRT) and not kill self (SIGKILL)
sys-libs/glibc:experimental-loong - Add experimental LoongArch patchset
sys-libs/glibc:gd - build memusage and memusagestat tools
sys-libs/glibc:hash-sysv-compat - enable sysv linker hashes in glibc for compatibility with binary software (EAC via wine/proton)
sys-libs/glibc:multiarch - enable optimizations for multiple CPU architectures (detected at runtime)
sys-libs/glibc:multilib-bootstrap - Provide prebuilt libgcc.a and crt files if missing. Only needed for ABI switch.
sys-libs/glibc:nscd - Build, and enable support for, the Name Service Cache Daemon
sys-libs/glibc:perl - Install additional scripts written in Perl
sys-libs/glibc:ssp - protect stack of glibc internals
sys-libs/glibc:stack-realign - Realign the stack in the 32-bit build for compatibility with older binaries at some performance cost
sys-libs/glibc:static-pie - Enable static PIE support (runtime files for -static-pie gcc option).
sys-libs/glibc:suid - Make internal pt_chown helper setuid -- not needed if using Linux and have /dev/pts mounted with gid=5
sys-libs/glibc:systemtap - enable systemtap static probe points
sys-libs/ldb:doc - Builds documentation
sys-libs/ldb:ldap - Enable LDAP support
sys-libs/ldb:lmdb - Enable LMDB backend
sys-libs/ldb:python - Enable Python support
sys-libs/libblockdev:bcache - Enable block device cache support.
sys-libs/libblockdev:cryptsetup - Enable sys-fs/cryptsetup support
sys-libs/libblockdev:device-mapper - Enable support for device-mapper from sys-fs/lvm2
sys-libs/libblockdev:dmraid - Support for dmraid devices, also known as ATA-RAID, or Fake RAID.
sys-libs/libblockdev:escrow - Support for building crypto plugin with escrow device support
sys-libs/libblockdev:kbd - Enable kernel block device support.
sys-libs/libblockdev:lvm - Enable support for Logical Volume Management via sys-fs/lvm2.
sys-libs/libblockdev:nvme - Add nvme support via sys-libs/libnvme
sys-libs/libblockdev:tools - Build tools
sys-libs/libblockdev:vdo - Enable Virtual Data Optimizer support.
sys-libs/libcap:tools - Install captree, which requires dev-lang/go
sys-libs/libcxx:clang - Force building using installed clang (rather than the default CC/CXX; required for testing).
sys-libs/libcxx:libcxxabi - Build on top of sys-libs/libcxxabi instead of gcc's libsupc++ (avoids depending on gcc).
sys-libs/libcxxabi:clang - Force building using installed clang (rather than the default CC/CXX; required for testing).
sys-libs/libnbd:fuse - Install the sys-fs/fuse powered nbdfuse.
sys-libs/libnbd:go - Build bindings for dev-lang/go
sys-libs/libnbd:uri-support - Enable nbd:// URI support via dev-libs/libxml2.
sys-libs/libnvme:json - Support JSON output via dev-libs/json-c
sys-libs/libnvme:keyutils - Add support for sys-apps/keyutils
sys-libs/libnvme:uuid - UUID support via sys-apps/util-linux
sys-libs/libomp:gdb-plugin - Build OMPD GDB plugin
sys-libs/libomp:hwloc - Enable CPU affinity support via hwloc
sys-libs/libomp:offload - Support offloading OpenMP using libomptarget
sys-libs/libomp:ompt - Enable OpenMP Tools Interface support
sys-libs/libseccomp:experimental-loong - Add experimental LoongArch patchset
sys-libs/libunwind:debug-frame - Adds support for DWARF .debug_frame section: Use the information from this section if available
sys-libs/libunwind:libatomic - Use libatomic instead of builtin atomic operations
sys-libs/libxcrypt:compat - Build with compatibility interfaces for other crypt implementations
sys-libs/libxcrypt:headers-only - Build and install only the headers.
sys-libs/libxcrypt:system - Install as system libcrypt.so rather than to an alternate directory (will collide with sys-libs/glibc's version)
sys-libs/llvm-libunwind:clang - Force building using installed clang (rather than the default CC/CXX; required for testing).
sys-libs/minizip-ng:compat - Enable compatibility with sys-libs/zlib's USE=minizip
sys-libs/minizip-ng:openssl - Use dev-libs/openssl for further encryption capabilities
sys-libs/musl-nscd:minimal - Only installs the header files
sys-libs/ncurses:ada - Add bindings for the ADA programming language
sys-libs/ncurses:stack-realign - Realign the stack in the 32-bit build for compatibility with older binaries at some performance cost. Avoids crashes in older 32-bit binaries. Only affects x86/32-bit multilib builds on amd64.
sys-libs/ncurses:tinfo - Build curses library (libncurses) sep from the low-level terminfo library (libtinfo) -- usually needed only for binary packages -- but it is binary compatible in either mode
sys-libs/ncurses:trace - Enable test trace() support in ncurses calls
sys-libs/ncurses-compat:stack-realign - Realign the stack in the 32-bit build for compatibility with older binaries at some performance cost. Avoids crashes in older 32-bit binaries. Only affects x86/32-bit multilib builds on amd64.
sys-libs/ncurses-compat:tinfo - Build curses library (libncurses) sep from the low-level terminfo library (libtinfo) -- usually needed only for binary packages -- but it is binary compatible in either mode
sys-libs/newlib:nano - Build additional newlib-nano library
sys-libs/pam:berkdb - Build the pam_userdb module, that allows to authenticate users against a Berkeley DB file. Please note that enabling this USE flag will create a PAM module that links to the Berkeley DB (as provided by sys-libs/db) installed in /usr/lib and will thus not work for boot-critical services authentication.
sys-libs/readline:utils - Install rlfe (ReadLine Front-End) helper tool -- a wrapper program for making any stdin use readline
sys-libs/snapd-glib:qml - Build the QML bindings
sys-libs/talloc:compat - Enable extra compatibility stuff
sys-libs/timezone-data:leaps-timezone - Install the set of "right" timezones; these timezones include leap seconds when counting seconds since the epoch (while POSIX does not) as they are based on the TAI (International Atomic Time) clock
sys-libs/timezone-data:zic-slim - Default to 'slim' file format for /usr/share/zoneinfo. Otherwise 'fat' format is used. Not all programs can handle 'slim' format'.
sys-libs/zlib:minizip - include the minizip library for quick and dirty zip extraction
sys-libs/zlib-ng:compat - Enable compatibility to sys-libs/zlib
sys-power/apcupsd:modbus - Enable MODBUS support over USB
sys-power/autosuspend:mpd - Enable support for the Music Player Daemon
sys-power/intel-undervolt:elogind - Use elogind hook to apply voltage after system sleep
sys-power/nut:gpio - Includes all UPS drivers that use GPIO.
sys-power/nut:i2c - Includes all UPS drivers that use I2C.
sys-power/nut:ipmi - Includes all UPS drivers that use ipmi.
sys-power/nut:modbus - Includes all UPS drivers that use MODBUS.
sys-power/nut:monitor - Add a QT5 gui monitor.
sys-power/nut:serial - Includes all UPS drivers that use SERIAL.
sys-power/nut:snmp - Includes all UPS drivers that use SNMP.
sys-power/nut:usb - Includes all UPS drivers that use USB.
sys-power/nut:xml - Includes all UPS drivers that use XML.
sys-power/nvclock:gtk - Install the GTK+ based graphical interface
sys-power/nvclock:nvcontrol - Add NVCONTROL support for OpenGL options
sys-power/suspend:crypt - Allows suspend and resume from encrypted disk
sys-process/atop:modules - Build netatop kernel module and install netatopd daemon.
sys-process/audit:gssapi - Enable GSSAPI support
sys-process/audit:io-uring - Enable support for io-uring. Doesn't need the library but needs at least kernel 5.1.
sys-process/bottom:battery - Include support for laptop battery information
sys-process/bottom:gpu - Include support for GPU temperature and memory usage information
sys-process/bottom:zfs - Include support for ZFS ARC memory usage information
sys-process/criu:bpf - Add support for BPF programs via dev-libs/libbpf
sys-process/criu:filecaps - Install the criu binary with file capabilities to allow for rootless CRIU
sys-process/criu:nftables - Add support for net-firewall/nftables
sys-process/criu:setproctitle - Use dev-libs/libbsd to make process titles of service workers to be more verbose
sys-process/cronie:anacron - Install the periodic anacron command scheduler.
sys-process/fcron:debug - Enable debug code and output. Since version 3.0.5 this will no longer force foreground execution, and fcron will be able to run as a service properly.
sys-process/fcron:mta - Enable mta support for sending emails from fcron
sys-process/fcron:pam - Enable PAM support for fcron. This means that fcron will pass through the "fcron" stack before executing the jobs, and fcrontab will use the "fcrontab" stack to authenticate the user before editing its crontab file.
sys-process/fcron:system-crontab - Set up fcron to respect /etc/crontab and /etc/cron.d. If this flag is disabled, /etc/cron.d and /etc/crontab will be ignored, but /etc/cron.{hourly,daily,weekly,monthly} will still be respected. Also this creates /usr/bin/crontab symlink.
sys-process/htop:delayacct - Enable Linux delay accounting support via dev-libs/libnl
sys-process/htop:hwloc - Use sys-apps/hwloc for CPU affinity support
sys-process/htop:openvz - Enable openvz support
sys-process/htop:vserver - Enable vserver support
sys-process/lsof:rpc - support looking up RPC service info
sys-process/procps:elogind - Use sys-auth/elogind for session tracking.
sys-process/procps:kill - Build the kill program
sys-process/procps:modern-top - Enables new startup defaults of top. Keeps old defaults if disabled
sys-process/procps:ncurses - Build programs that use ncurses: top, slabtop, watch
sys-process/systemd-cron:cron-boot - Include support for the boot timer.
sys-process/systemd-cron:etc-crontab-systemd - Use dedicated /etc/crontab-systemd instead of parsing /etc/crontab
sys-process/systemd-cron:minutely - Support /etc/cron.minutely
sys-process/systemd-cron:runparts - Use traditional run-parts instead of creating jobs for each cron.* entry
sys-process/systemd-cron:setgid - Compile setgid C helper for crontab. Needs GCC or Clang.
sys-process/systemd-cron:yearly - Support /etc/cron.yearly
sys-process/tini:args - Enable argument parsing.
virtual/blas:eselect-ldso - Enable runtime library switching by eselect and ld.so.
virtual/cblas:eselect-ldso - Enable runtime library switching by eselect and ld.so.
virtual/jdk:headless-awt - Don't install the X backend for AWT, needed by some GUIs
virtual/lapack:eselect-ldso - Enable runtime library switching by eselect and ld.so.
virtual/lapacke:eselect-ldso - Enable runtime library switching by eselect and ld.so.
virtual/linux-sources:firmware - Install linux kernel firmware
virtual/mpi:nullmpi - Allow sys-cluster/nullmpi a minimal incomplete MPI implementation as a provider
virtual/mpi:romio - Enable romio, a high-performance portable MPI-IO
virtual/mysql:embedded - Build embedded server (libmysqld)
virtual/mysql:server - Build server (mysqld)
virtual/pkgconfig:native-symlinks - Install generic symlinks like pkgconf and pkg-config. If this flag is disabled, only CHOST-prefixed pkg-config executables will be available to end users and ebuilds.
virtual/podofo-build:boost - Add support for boost
virtual/podofo-build:tools - Build and install commandline tools
virtual/rust:profiler - Build the profiler runtime and rust-demangler tool (needed for '-C profile-generate' or '-C instrument-coverage' codegen opts)
virtual/rust:rustfmt - Install rustfmt, Rust code formatter
virtual/ssh:minimal - Prefer net-misc/dropbear over net-misc/openssh
virtual/wine:proton - Enable Valve Software's fork of Wine
virtual/wine:staging - Enable Wine-Staging's Patchset
www-apache/mod_auth_openidc:brotli - Add support for brotli compressed data using app-arch/brotli
www-apache/mod_auth_openidc:redis - Add support for the Redis caching via dev-libs/hiredis
www-apache/mod_backtrace:unwind - Use sys-libs/libunwind to provide better resolution of function names.
www-apache/mod_musicindex:archive - Add archive support
www-apache/mod_musicindex:cache - Add File cache support
www-apache/mod_musicindex:mysql - Add MySQL cache support
www-apache/mod_nss:ecc - enable Elliptical Curve Cyptography
www-apache/mod_perl:ithreads - Build for use with thread-capable perl, needs same setting as in dev-lang/perl
www-apache/mod_security:fuzzyhash - Support fuzzy hash computations (to detect malware, for example) using the app-crypt/ssdeep package.
www-apache/mod_security:geoip - Pull in dev-libs/geoip for use by the SecGeoLookupDb directive.
www-apache/mod_security:jit - Add support for the PCRE Just-in-Time optimisation, as enabled by dev-libs/libpcre with jit USE flag enabled. Might not be available on hardened systems.
www-apache/mod_security:json - Suppose JSON in the request body parser through dev-libs/yajl.
www-apache/mod_security:mlogc - Build and install the ModSecurity Audit Log Collector (mlogc).
www-apache/mod_security:pcre2 - Use dev-libs/libpcre2 as regex implementation
www-apache/pwauth:domain-aware - Ignore leading domain names in username (Windows compat)
www-apache/pwauth:faillog - Log failed login attempts
www-apache/pwauth:ignore-case - Ignore string case in username (mostly Windows compat)
www-apps/cgit:highlight - Enable source code highlighting
www-apps/cgit:lua - Enable support for Lua scripting
www-apps/drupal:uploadprogress - Install dev-php/pecl-uploadprogress package
www-apps/gitea:acct - User and group management via acct-*/git packages
www-apps/gitea:gogit - (EXPERIMENTAL) Use go-git variants of Git commands.
www-apps/hugo:extended - Enable SASS/SCSS and WebP encoding support
www-apps/icingaweb2:apache2-server - Adds support for the apache2-server
www-apps/icingaweb2:fpm - Adds FPM support to php
www-apps/icingaweb2:nginx - Adds support for nginx
www-apps/ikiwiki:extras - Installs additional modules used by ikiwiki plugins
www-apps/klaus:ctags - Enable support for Exuberant ctags; makes all source code symbols hyperlinks to their definitions
www-apps/postfixadmin:vacation - Install vacation.pl script and dependencies
www-apps/redmine:markdown - Enable support for Markdown
www-apps/redmine:minimagick - Enable image processing support via dev-ruby/mini_magick
www-apps/redmine:passenger - Enable support for www-apache/passenger
www-apps/redmine:standalone - Enable standalone mode with www-servers/puma
www-apps/roundup:jinja - Enable Jinja2 support
www-apps/roundup:markdown - Enable markdown rendering
www-apps/roundup:pyjwt - Enable jwt tokens for login
www-apps/roundup:tz - Enable full support of timezone
www-apps/roundup:whoosh - Enable Whoosh full-text indexer
www-apps/roundup:xapian - Enable Xapian full-text indexer
www-apps/rt:apache - Add www-servers/apache support
www-apps/rt:lighttpd - Add www-servers/lighttpd support
www-apps/rt:nginx - Add www-servers/nginx support
www-apps/tt-rss:daemon - Install additional init scripts for automated RSS updates
www-apps/ttyd:mbedtls - Use mbedTLS replacement for OpenSSL
www-apps/webdavcgi:rcs - Adds support for a revision controlled backend with RCS (dev-vcs/rcs)
www-apps/wordpress:akismet - Installs Akismet comment spam plug-in
www-apps/wordpress:themes - Installs themes (including default theme)
www-apps/xpra-html5:brotli - Install assets compressed with brotli
www-apps/xpra-html5:gzip - Install assets compressed with gzip
www-apps/xpra-html5:minify - Minify JavaScript code for smaller transfers
www-client/chromium:debug - Enable DCHECK feature with severity configurable at runtime. Mostly intended for debugging and development, NOT RECOMMENDED for general use.
www-client/chromium:ffmpeg-chromium - (binpkg only) Use Chromium FFmpeg fork (media-video/ffmpeg-chromium) rather than mainline FFmpeg (media-video/ffmpeg)
www-client/chromium:gtk4 - Build with GTK4 headers.
www-client/chromium:hangouts - Enable support for Google Hangouts features such as screen sharing
www-client/chromium:headless - Build Ozone only with headless backend, NOT RECOMMENDED for general use.
www-client/chromium:official - Enable Official build instead of Developer build.
www-client/chromium:pax-kernel - Allow building on a PaX-enabled kernel
www-client/chromium:pgo - Build with Profile Guided Optimizations (2-stage compilation)
www-client/chromium:proprietary-codecs - Enable codecs for patent-encumbered audio and video formats.
www-client/chromium:system-harfbuzz - Use system media-libs/harfbuzz instead of the bundled library.
www-client/chromium:system-icu - Use system dev-libs/icu instead of the bundled one
www-client/chromium:system-png - Use system media-libs/libpng instead of the bundled library
www-client/chromium:system-toolchain - Use system toolchain instead of the bundled one (if possible)
www-client/chromium:system-zstd - Use system app-arch/zstd instead of the bundled one.
www-client/chromium:widevine - Unsupported closed-source DRM capability (required by Netflix VOD)
www-client/dillo:mbedtls - Build against the net-libs/mbedtls library for TLS support.
www-client/dillo:openssl - Build against the dev-libs/openssl library for TLS support.
www-client/dillo:xembed - Enable XEmbed protocol support
www-client/elinks:bittorrent - Enable support for the BitTorrent protocol
www-client/elinks:finger - Enable support for the finger protocol
www-client/elinks:gemini - Enable support for the gemini protocol
www-client/elinks:gopher - Enable support for the gopher protocol
www-client/elinks:libcss - Enable support for cascading style sheets via dev-libs/libcss
www-client/elinks:mouse - Make elinks to grab all mouse events
www-client/elinks:tre - Enable support for regex searches via dev-libs/tre
www-client/elinks:xml - Enable support for bookmarks via dev-libs/expat
www-client/firefox:clang - Use Clang compiler instead of GCC
www-client/firefox:eme-free - Disable EME (DRM plugin) capability at build time
www-client/firefox:geckodriver - Enable WebDriver support
www-client/firefox:gmp-autoupdate - Allow Gecko Media Plugins (binary blobs) to be automatically downloaded and kept up-to-date in user profiles
www-client/firefox:gnome-shell - Integrate with gnome-base/gnome-shell search
www-client/firefox:hwaccel - Force-enable hardware-accelerated rendering (Mozilla bug 594876)
www-client/firefox:jumbo-build - Enable unified build - combines source files to speed up build process, but requires more memory
www-client/firefox:libproxy - Enable libproxy support
www-client/firefox:openh264 - Use media-libs/openh264 for H264 support instead of downloading binary blob from Mozilla at runtime
www-client/firefox:pgo - Add support for profile-guided optimization for faster binaries - this option will double the compile time
www-client/firefox:pulseaudio - Add sound server support via media-libs/libpulse (may be PulseAudio or Pipewire, or apulse if installed)
www-client/firefox:sndio - Enable support for the media-sound/sndio backend
www-client/firefox:system-av1 - Use the system-wide media-libs/dav1d and media-libs/libaom library instead of bundled
www-client/firefox:system-harfbuzz - Use the system-wide media-libs/harfbuzz and media-gfx/graphite2 instead of bundled
www-client/firefox:system-icu - Use the system-wide dev-libs/icu instead of bundled
www-client/firefox:system-jpeg - Use the system-wide media-libs/libjpeg-turbo instead of bundled
www-client/firefox:system-libevent - Use the system-wide dev-libs/libevent instead of bundled
www-client/firefox:system-libvpx - Use the system-wide media-libs/libvpx instead of bundled
www-client/firefox:system-png - Use the system-wide media-libs/libpng instead of bundled (requires APNG patches)
www-client/firefox:system-python-libs - Use system's python site instead of bundled python libraries
www-client/firefox:system-webp - Use the system-wide media-libs/libwebp instead of bundled
www-client/firefox:wifi - Enable necko-wifi for NetworkManager integration, and access point MAC address scanning for better precision with opt-in geolocation services
www-client/firefox-bin:alsa - When pulseaudio isn't set, this prefers apulse
www-client/firefox-bin:gmp-autoupdate - Allow Gecko Media Plugins (binary blobs) to be automatically downloaded and kept up-to-date in user profiles
www-client/jd:migemo - Enable migemo support for Japanese
www-client/jd:oniguruma - Use dev-libs/oniguruma for regular expression
www-client/links:freetype - Enable media-libs/freetype support
www-client/links:libevent - Enable dev-libs/libevent support
www-client/lynx:gnutls - Use gnutls library for HTTPS support (openssl is the default library for HTTPS support).
www-client/lynx:ssl - Enable HTTPS support.
www-client/microsoft-edge:mip - Install Microsoft Information Protection plugin.
www-client/microsoft-edge-beta:mip - Install Microsoft Information Protection plugin.
www-client/microsoft-edge-dev:mip - Install Microsoft Information Protection plugin.
www-client/netsurf:bmp - Bitmap (BMP and ICO) image support via media-libs/libnsbmp
www-client/netsurf:gtk - Build GTK3 GUI
www-client/netsurf:psl - Use public suffix list from media-libs/libnspsl to detect supercookies (recommended)
www-client/netsurf:rosprite - RISC OS Sprite bitmap image support via media-libs/librosprite
www-client/netsurf:svgtiny - Use media-libs/libsvgtiny instead of gnome-base/librsvg for SVG support
www-client/netsurf:truetype - Use media-libs/freetype for text in the framebuffer frontend
www-client/opera:ffmpeg-chromium - Use Chromium FFmpeg fork (media-video/ffmpeg-chromium) rather than mainline FFmpeg (media-video/ffmpeg)
www-client/opera:proprietary-codecs - Enable codecs for patent-encumbered audio and video formats.
www-client/opera-beta:ffmpeg-chromium - Use Chromium FFmpeg fork (media-video/ffmpeg-chromium) rather than mainline FFmpeg (media-video/ffmpeg)
www-client/opera-beta:proprietary-codecs - Enable codecs for patent-encumbered audio and video formats.
www-client/opera-developer:ffmpeg-chromium - Use Chromium FFmpeg fork (media-video/ffmpeg-chromium) rather than mainline FFmpeg (media-video/ffmpeg)
www-client/opera-developer:proprietary-codecs - Enable codecs for patent-encumbered audio and video formats.
www-client/qutebrowser:adblock - Enable Brave's ABP-style adblocker library for improved adblocking
www-client/qutebrowser:widevine - Unsupported closed-source DRM capability (required by Netflix VOD)
www-client/seamonkey:chatzilla - Build Mozilla's IRC client (default on)
www-client/seamonkey:custom-optimization - Build with user-specified compiler optimizations (-Os, -O0, -O1, -O2, -O3) from CFLAGS (unsupported)
www-client/seamonkey:gmp-autoupdate - Allow Gecko Media Plugins (binary blobs) to be automatically downloaded and kept up-to-date in user profiles
www-client/seamonkey:ipc - Use inter-process communication between tabs and plugins. Allows for greater stability in case of plugin crashes
www-client/seamonkey:lto - Enable Link Time Optimization (LTO). Requires Gold linker
www-client/seamonkey:system-av1 - Use the system-wide media-libs/dav1d and media-libs/libaom library instead of bundled
www-client/seamonkey:system-harfbuzz - Use the system-wide media-libs/harfbuzz instead of bundled
www-client/seamonkey:system-icu - Use the sytem-wide dev-libs/icu instead of bundled
www-client/seamonkey:system-jpeg - Use the system-wide media-libs/libjpeg-turbo instead of bundled
www-client/seamonkey:system-libevent - Use the system-wide dev-libs/libevent instead of bundled
www-client/seamonkey:system-libvpx - Use the system-wide media-libs/libvpx instead of bundled
www-client/seamonkey:system-png - Use the system-wide media-libs/libpng instead of bundled (requires APNG patches)
www-client/seamonkey:system-sqlite - Use the system-wide dev-db/sqlite installation with secure-delete enabled
www-client/seamonkey:webrtc - Enable WebRTC support. Disabled by default due to privacy concerns.
www-client/surf:savedconfig - Without a saved config.h, this package depends on net-misc/curl and x11-terms/st for a default download mechanism
www-client/surf:tabbed - Install surf-open.sh script for running surf in x11-misc/tabbed
www-client/uget:aria2 - Enable support for net-misc/aria2 through xmlrpc. You'll find the plugin in the app's settings.
www-client/uget:control-socket - Enable JSON-RPC over unix domain socket
www-client/uget:openssl - Use dev-libs/openssl instead of net-libs/gnutls
www-client/uget:rss - Enable uGet feed messages
www-client/vivaldi:ffmpeg-chromium - Use Chromium FFmpeg fork (media-video/ffmpeg-chromium) rather than mainline FFmpeg (media-video/ffmpeg)
www-client/vivaldi:proprietary-codecs - Use system FFmpeg library to support patent-encumbered media codecs
www-client/vivaldi:widevine - Unsupported closed-source DRM capability (required by Netflix VOD)
www-client/vivaldi-snapshot:ffmpeg-chromium - Use Chromium FFmpeg fork (media-video/ffmpeg-chromium) rather than mainline FFmpeg (media-video/ffmpeg)
www-client/vivaldi-snapshot:proprietary-codecs - Use system FFmpeg library to support patent-encumbered media codecs
www-client/vivaldi-snapshot:widevine - Unsupported closed-source DRM capability (required by Netflix VOD)
www-client/w3m:gdk-pixbuf - Enable support for x11-libs/gdk-pixbuf
www-client/w3m:lynxkeymap - If you prefer Lynx-like key binding
www-misc/litmus:libproxy - Support for automatic proxy configuration management through net-libs/libproxy.
www-misc/litmus:libxml2 - Use dev-libs/libxml2 to parse XML
www-misc/litmus:pkcs11 - Support for PKCS #11 through PaKChoiS (dev-libs/pakchois).
www-plugins/lightspark:ppapi - Install the PPAPI plugin (for Chromium)
www-plugins/lightspark:rtmp - Enable Real Time Messaging Protocol using librtmp
www-plugins/passff-host:chrome - Install plugin for chrome (which also includes opera)
www-plugins/passff-host:chromium - Install plugin for chromium
www-plugins/passff-host:firefox - Install plugin for firefox
www-plugins/passff-host:vivaldi - Install plugin for vivaldi
www-servers/apache:static - Link in apache2 modules statically rather then plugins
www-servers/apache:suexec - Install suexec with apache
www-servers/apache:suexec-caps - Install suexec with capabilities instead of SUID
www-servers/apache:suexec-syslog - Log suexec to syslog instead of to a separate file
www-servers/caddy:events-handlers-exec - Builds a module which lets user exec command on Caddy events https://caddyserver.com/docs/modules/events.handlers.exec https://caddyserver.com/docs/caddyfile/options#event-options
www-servers/caddy:security - Authentication, Authorization, and Accounting. LDAP, OAuth, SAML, MFA, 2FA, JWT etc.. https://caddyserver.com/docs/modules/security https://github.com/greenpau/caddy-security
www-servers/civetweb:server - Build standalone server
www-servers/fnord:auth - Enable HTTP authentication support
www-servers/gatling:diet - Compile against dev-libs/dietlibc
www-servers/h2o:libh2o - Build and install libh2o
www-servers/h2o:mruby - Enable support for mruby
www-servers/kore:acme - Add support for ACME
www-servers/kore:http - Add support for HTTP
www-servers/kore:json - Add support for JSONRPC
www-servers/kore:openssl - Use the openssl TLS backend
www-servers/lighttpd:brotli - Enable output compression via app-arch/brotli (recommended)
www-servers/lighttpd:gnutls - Build module for TLS via net-libs/gnutls
www-servers/lighttpd:libdeflate - Enable output compression via app-arch/libdeflate
www-servers/lighttpd:maxminddb - Add support for geolocation using dev-libs/libmaxminddb
www-servers/lighttpd:mbedtls - Build module for TLS via net-libs/mbedtls
www-servers/lighttpd:nettle - Use dev-libs/nettle as crypto library
www-servers/lighttpd:nss - Build module for TLS via Mozilla's Network Security Services
www-servers/lighttpd:webdav - Enable webdav properties
www-servers/lighttpd:zlib - Enable output compression via gzip or deflate algorithms from sys-libs/zlib
www-servers/lighttpd:zstd - Enable output compression via Zstandard (app-arch/zstd) algorithm
www-servers/nginx:aio - Enables file AIO support
www-servers/nginx:http - Enable HTTP core support
www-servers/nginx:http-cache - Enable HTTP cache support
www-servers/nginx:http2 - Enable HTTP2 module support
www-servers/nginx:http3 - Enable HTTP3 module support
www-servers/nginx:ktls - Enable Kernel TLS offload (kTLS)
www-servers/nginx:libatomic - Use libatomic instead of builtin atomic operations
www-servers/nginx:pcre-jit - Enable JIT for pcre
www-servers/nginx:pcre2 - Enable support for pcre2
www-servers/nginx:rtmp - NGINX-based Media Streaming Server
www-servers/nginx:ssl - Enable HTTPS module for http. Enable SSL/TLS support for POP3/IMAP/SMTP for mail.
www-servers/nginx-unit:php8-1 - Support for PHP 8.1
www-servers/nginx-unit:php8-2 - Support for PHP 8.2
www-servers/pshs:magic - Enable automatic detection of Content-Type using libmagic (sys-apps/file)
www-servers/pshs:qrcode - Enable generating QRCodes for server URL
www-servers/sniproxy:dns - Enable DNS resolver via net-libs/udns
www-servers/sniproxy:largefile - Enable large file support (so we can log more than 2GB)
www-servers/sniproxy:rfc3339 - Use RFC3339 timestamp format in log.
www-servers/tomcat:extra-webapps - Build also the docs and examples webapp
www-servers/uwsgi:embedded - Embed plugins instead of building them as real plugins. When disabling this USE flag make sure you specify all used plugins in your uWSGI configuration. Note: Language plugins will always be built as real plugins.
www-servers/uwsgi:go - Build the gccgo plugin to run Go applications.
www-servers/uwsgi:json - Support json as a configuration file format.
www-servers/uwsgi:routing - Enable routing support
www-servers/uwsgi:yajl - Use dev-libs/yajl instead of dev-libs/jansson for parsing JSON configuration files (if USe=json is set)
www-servers/uwsgi:yaml - Support yaml as a configuration file format.
www-servers/uwsgi:zeromq - Enable logging and deployment via ZeroMQ.
www-servers/xsp:developer - creates .mdb files for either Release and Debug
www-servers/xsp:net35 - use .NET 3.5 Framework
www-servers/xsp:net40 - use .NET 4.0 Framework
www-servers/xsp:net45 - use .NET 4.5 Framework
x11-apps/igt-gpu-tools:X - Enable intel-gpu-overlay xlib/cairo backend
x11-apps/igt-gpu-tools:chamelium - Enables support for building Chamelium tests
x11-apps/igt-gpu-tools:overlay - Build the intel-gpu-overlay utility
x11-apps/igt-gpu-tools:runner - Build the test runner
x11-apps/igt-gpu-tools:tests - Build and install tests
x11-apps/igt-gpu-tools:xv - Enable intel-gpu-overlay xv backend
x11-apps/xdpyinfo:dmx - Builds support for Distributed Multiheaded X x11-base/xorg-server
x11-apps/xinit:twm - Control dependencies on legacy apps (xterm, twm, ...). Safe to disable if you use a modern desktop environment.
x11-base/xorg-server:elogind - Use elogind to get control over framebuffer when running as regular user
x11-base/xorg-server:unwind - Enable libunwind usage for backtraces
x11-base/xorg-server:xcsecurity - Build Security extension
x11-base/xorg-server:xephyr - Build the Xephyr server
x11-base/xorg-server:xnest - Build the Xnest server
x11-base/xorg-server:xorg - Build the Xorg X server (HIGHLY RECOMMENDED)
x11-base/xorg-server:xvfb - Build the Xvfb server
x11-base/xwayland:libei - Enable emulated input using dev-libs/libei
x11-base/xwayland:unwind - Enable libunwind usage for backtraces
x11-base/xwayland:xcsecurity - Build Security extension
x11-drivers/nvidia-drivers:kernel-open - Use the open source variant of the drivers (Turing/Ampere+ GPUs only, aka GTX 1650+ -- recommended with >=560.xx drivers if usable)
x11-drivers/nvidia-drivers:persistenced - Install the persistence daemon for keeping devices state when unused (e.g. for headless)
x11-drivers/nvidia-drivers:powerd - Install the NVIDIA dynamic boost support daemon (only useful with specific laptops, ignore if unsure)
x11-drivers/nvidia-drivers:static-libs - Install the XNVCtrl static library for accessing sensors and other features
x11-drivers/nvidia-drivers:tools - Install additional tools such as nvidia-settings
x11-drivers/xf86-video-geode:ztv - Enable building the V4L2 ZTV driver
x11-drivers/xf86-video-intel:sna - Enable SandyBridge's New Acceleration (useful on all chipsets, not just SandyBridge)
x11-drivers/xf86-video-intel:tools - Build the intel-virtual-output tool
x11-drivers/xf86-video-intel:uxa - Enable UMA Acceleration Architecture
x11-drivers/xf86-video-intel:xvmc - Enables X-Video Motion Compensation support
x11-drivers/xf86-video-openchrome:viaregtool - Install registers dumper tool
x11-drivers/xf86-video-qxl:xspice - Include Xspice, a standard X server that is also a Spice server
x11-libs/agg:gpc - Enable gpc polygon clipper library
x11-libs/cairo:glib - Compile with GLib Object System support
x11-libs/fltk:games - Builds and installs some extra games
x11-libs/fox:tools - Install adie, calculator, shutterbug, and pathfinder apps.
x11-libs/gtk+:broadway - Enable the GDK Broadway backend
x11-libs/gtk+:cloudproviders - Enable GtkPlacesSidebar to access cloud services
x11-libs/gtk+:colord - Use x11-misc/colord for color management in printing
x11-libs/gtk+:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
x11-libs/gtkdatabox:glade - Build with libglade and glade-3 supports, which includes a glade's module for GtkDataBox widget
x11-libs/gtkmathview:mathml - Install additional fonts for proper mathml support.
x11-libs/gtkmathview:t1lib - Enable media-libs/t1lib support
x11-libs/gtksourceview:glade - Install a glade catalog file
x11-libs/libQGLViewer:designer - Installs dev-qt/designer plugin.
x11-libs/libSM:uuid - Use UUID for session identification instead of IP address and system time.
x11-libs/libXaw:deprecated - Install deprecated Xaw6 library.
x11-libs/libXfont2:bzip2 - Support bzip2 compressed PCF fonts.
x11-libs/libXfont2:truetype - Use media-libs/freetype for font rasterization.
x11-libs/libdlo:test-program - Build the program for testing Displaylink devices.
x11-libs/libdrm:tools - Install optional tests and tools
x11-libs/libfm:automount - Use gnome-base/gvfs for automounting
x11-libs/libfm:udisks - Use libfm's udisks-based volume monitor implementation instead of using the one from gvfs
x11-libs/libfm:vala - Support custom actions in menus
x11-libs/libwnck:tools - Install wnckprop-3 and wnck-urgency-monitor-3 command-line tools
x11-libs/libxcb:xkb - Enable the XCB keyboard extension
x11-libs/libxkbcommon:tools - Build the xkbcli tools
x11-libs/motif:motif22-compatibility - Compatibility with Open Motif 2.2
x11-libs/pango:X - Build and install the legacy pangoxft library
x11-libs/pango:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
x11-libs/pixman:loongson2f - Enable Loongson2f MMI optimizations.
x11-libs/qscintilla:designer - Build plugin for Qt Designer
x11-libs/qwt:designer - Installs dev-qt/designer plugin.
x11-libs/qwt:mathml - Use the MathML renderer of the Qt solutions package.
x11-libs/qwt:polar - Install the QwtPolar headers
x11-libs/tslib:evdev - Build experimental input module
x11-libs/tslib:uinput - Provide alternative ts_uinput evdev device
x11-libs/vte:icu - Enable legacy charset support using dev-libs/icu
x11-libs/vte:systemd - Support moving terminal child processes to their own systemd user scopes to avoid terminal getting killed due to child causing OOM
x11-libs/wxGTK:gstreamer - Enable the wxMediaCtrl class for playing audio and video through gstreamer.
x11-libs/wxGTK:sdl - Use Simple Directmedia Layer (media-libs/libsdl) for audio.
x11-libs/xapp:mate - Install integrations for mate-base/mate
x11-libs/xapp:xfce - Install integrations for xfce-base/xfce4-meta
x11-misc/alock:doc - Build and install manpage with app-text/asciidoc.
x11-misc/appmenu-gtk-module:gtk2 - Build module for GTK+2
x11-misc/autorandr:launcher - Install the launcher, i.e., an alternative to the udev/systemd hooks
x11-misc/bumblebee:bbswitch - Add dependency on sys-power/bbswitch for PM feature
x11-misc/clipmenu:dmenu - Use dmenu as default launcher
x11-misc/clipmenu:fzf - Use fzf as default launcher
x11-misc/clipmenu:rofi - Use rofi as default launcher
x11-misc/colord:argyllcms - Enable ArgyllCMS sensor
x11-misc/colord:extra-print-profiles - Generate extra print profiles. Warning: significant build time and memory requirements.
x11-misc/copyq:notification - Build with native notification support (requires kde-frameworks/knotifications:5)
x11-misc/fbpager:xrender - Enable transparency support via x11-libs/libXrender
x11-misc/gammastep:geoclue - Control dependency on app-misc/geoclue
x11-misc/gmrun:xdg - Enable xdg spec for configuration and history files location
x11-misc/gpaste:gnome - Enable proper gnome support and enable gnome shell extension.
x11-misc/grsync:gtk3 - Link against x11-libs/gtk+:3 instead of x11-libs/gtk+:2
x11-misc/i3blocks:contrib - Install contrib modules
x11-misc/i3status:filecaps - Linux capabilities library is required for i3status to be able to read net bandwidth
x11-misc/j4-dmenu-desktop:dmenu - Use x11-misc/dmenu as default. Disable to use a different implementation.
x11-misc/ktsuss:sudo - Use the sudo backend instead the su one
x11-misc/libinput-gestures:experimental - avoid producing zombie processes
x11-misc/light-locker:dpms - Turn on the display on screensaver deactivation.
x11-misc/light-locker:screensaver - Lock the screen on screensaver activation.
x11-misc/lightdm:gtk - Pull in the gtk+ greeter
x11-misc/lightdm:non-root - Use non-root user by default
x11-misc/mugshot:gnome - Add support for gnome-base/gnome-control-center
x11-misc/mugshot:libreoffice - Add support for app-office/libreoffice and app-office/libreoffice-bin
x11-misc/mugshot:webcam - Add support for setting a profile photo in media-video/cheese
x11-misc/openbox-menu:icons - Enable support for icons in menus
x11-misc/openbox-menu:svg - Support SVG icons
x11-misc/picom:config-file - Enable config file support
x11-misc/picom:doc - Build documentation and man pages (requires app-text/asciidoc)
x11-misc/picom:drm - Enable support for using drm for vsync
x11-misc/picom:opengl - Enable features that require opengl (opengl backend, and opengl vsync methods)
x11-misc/polybar:i3wm - Add support for i3 window manager
x11-misc/polybar:ipc - Add support for Inter-Process Messaging
x11-misc/polybar:mpd - Add support for Music Player Daemon
x11-misc/polybar:network - Enable network support
x11-misc/primus:libglvnd - Use media-libs/libglvnd for dispatch
x11-misc/py3status:minimal - Don't depend on x11-misc/i3status if you don't plan to use any of its built-in modules.
x11-misc/py3status:udev - Install extra requirement dev-python/pyudev to enable udev events monitoring on modules.
x11-misc/qtfm:dbus - Install the qtfm-tray removable device manager
x11-misc/qtfm:shared - Install the libQtFM shared library and headers
x11-misc/read-edid:vbe-mode - Build get-edid with support for legacy, VBE-based interface. Requires dev-libs/libx86.
x11-misc/redshift:geoclue - Control dependency on app-misc/geoclue
x11-misc/rofi:drun - Enable desktop file run dialog
x11-misc/rofi:windowmode - Enable normal window mode
x11-misc/rss-glx:quesoglc - Enable support for OpenGL Character Renderer
x11-misc/sent:savedconfig - Without a saved config.h, this package depends on media-gfx/farbfeld for image conversions
x11-misc/spacefm:video-thumbnails - Support video thumbnails with media-video/ffmpegthumbnailer
x11-misc/stalonetray:graceful-exit - use non-portable hack to exit gracefully on signal
x11-misc/tint2:battery - Enable battery status plugin
x11-misc/tint2:sanitize - Enable ASAN
x11-misc/tint2:tint2conf - Build/Install tint2conf as well
x11-misc/urxvt-perls:deprecated - Install scripts which have been marked as deprecated by upstream
x11-misc/wbar:gtk - Enables the gtk-based wbar-config GUI
x11-misc/x11vnc:xdamage - Enable support for the Xdamage library
x11-misc/x11vnc:xfixes - Enable support for the Xfixes library
x11-misc/x11vnc:xrandr - Enable support for the X xrandr extension
x11-misc/xkbd:evdev - Enable dev-libs/libevdev support for xtg
x11-misc/xkbd:xi - Enable XInput2 support through x11-libs/libXi
x11-misc/xkbd:xrandr - Enable XRandR support through x11-libs/libXrandr
x11-misc/xkbset:tk - Install the dev-perl/Tk based xkbset-gui utility
x11-misc/xlockmore:vtlock - Enables support for virtual terminal locking
x11-misc/xlockmore:xlockrc - Enables xlockrc for people without PAM
x11-misc/xmobar:alsa - Use alsa-mixer to get the volume from soundcards.
x11-misc/xmobar:datezone - Enables localized date support.
x11-misc/xmobar:dbus - Publish a service on the session bus for controlling xmobar.
x11-misc/xmobar:mpd - MPD support. Needs libmpd installed.
x11-misc/xmobar:mpris - MPRIS v1, v2 support.
x11-misc/xmobar:rtsopts - Use -with-rtsopts=-V0 to reduce wakeups.
x11-misc/xmobar:timezone - Enables localized date support.
x11-misc/xmobar:uvmeter - UVMeter only useful to australians.
x11-misc/xmobar:weather - Enable weather plugin.
x11-misc/xmobar:wifi - Wireless info support via nl80211. Required for the Wireless plugin on systems running Linux, the kernel.
x11-misc/xmobar:xft - Use Xft to render text. UTF-8 support included.
x11-misc/xmobar:xpm - Enable usage of xpm for icons.
x11-misc/xmobar:xrender - Use XRender for alpha background pseudo-transparency.
x11-misc/xscreensaver:fonts - Install the fonts shipped with XScreenSaver that have clear licensing
x11-misc/xscreensaver:gdm - Use gdmflexiserver from gnome-base/gdm instead of x11-misc/lightdm
x11-misc/xscreensaver:gles - Emulate OpenGL 1.3 in terms of OpenGL ES 1.x
x11-misc/xscreensaver:glx - Use GLX to interface OpenGL and X11 instead of EGL
x11-misc/xscreensaver:locking - Compile in support for locking the display
x11-misc/xscreensaver:logind-idle-hint - Send the session idle hint to logind once the screen saver blanks
x11-misc/xscreensaver:new-login - Enable user switching support using gdmflexiserver (x11-misc/lightdm)
x11-misc/xsr:cursor - Capture mouse cursor using x11-misc/xdotool, and place them on the screenshots using media-gfx/imagemagick
x11-misc/yabar:playerctl - Uses media-sound/playerctl to retrieve the name of the currently played song
x11-plugins/bfm:gkrellm - Enable building of app-admin/gkrellmmodule
x11-plugins/e16-epplets:cdaudio - Enable CD Audio support using media-libs/libcdaudio
x11-plugins/e16-epplets:libgtop - Use gnome-base/libgtop to obtain system load information
x11-plugins/pidgin-mbpurple:twitgin - Enable graphical plugin for Gtk+ interface of Pidgin.
x11-plugins/pidgin-sipe:ocs2005-message-hack - Disable message timeout for OCS2005 clients which causes "false" not delivered error messages
x11-plugins/pidgin-sipe:openssl - Enable crypto support via dev-libs/openssl
x11-plugins/pidgin-sipe:telepathy - Support use as a telepathy backend
x11-plugins/pidgin-sipe:voice - Enable experimental voice/video support
x11-plugins/vicious:contrib - Install extra widgets, some for less common hardware, some contributed by Vicious users.
x11-plugins/wmbattery:apm - Add APM (Advanced Power Management) support
x11-plugins/wmfire:session - Enable session management
x11-plugins/wmudmount:gcr - Enable support for secure memory with app-crypt/gcr
x11-terms/aterm:background - Enable background image support via media-libs/libafterimage
x11-terms/aterm:xgetdefault - Enable resources via X instead of aterm small version
x11-terms/gnome-terminal:gnome-shell - Integrate with gnome-base/gnome-shell search
x11-terms/gnome-terminal:nautilus - Build gnome-base/nautilus extension
x11-terms/mlterm:brltty - Enable support for app-accessibility/brltty
x11-terms/mlterm:fcitx - Enable support for app-i18n/fcitx
x11-terms/mlterm:harfbuzz - Enable support for OpenType Layout (media-libs/harfbuzz)
x11-terms/mlterm:ibus - Enable support for app-i18n/ibus
x11-terms/mlterm:libssh2 - Enable support for net-libs/libssh2
x11-terms/mlterm:regis - Enable support for ReGIS
x11-terms/mlterm:scim - Enable support for app-i18n/scim
x11-terms/mlterm:skk - Enable support for SKK (virtual/skkserv or app-i18n/skk-jisyo)
x11-terms/mlterm:uim - Enable support for app-i18n/uim
x11-terms/mlterm:utempter - Enable support for sys-libs/libutempter
x11-terms/mlterm:wayland - Enable support for Wayland
x11-terms/rxvt-unicode:24-bit-color - Enable 24-bit color support. Note that this feature is unofficial, may cause visual glitches due to the fact there is no termcap/terminfo definition for rxvt-unicode-24bit yet so it is necessary to use the one for 256 colours, visibly increases memory usage, and might slow urxvt down dramatically when more than six fonts are in use in a terminal instance.
x11-terms/rxvt-unicode:256-color - Enable 256 color support
x11-terms/rxvt-unicode:blink - Enable blinking text
x11-terms/rxvt-unicode:fading-colors - Enable colors fading when off focus
x11-terms/rxvt-unicode:font-styles - Enable support for bold and italic fonts
x11-terms/rxvt-unicode:gdk-pixbuf - Enable transparency support using x11-libs/gdk-pixbuf
x11-terms/rxvt-unicode:iso14755 - Enable ISO-14755 support
x11-terms/rxvt-unicode:mousewheel - Enable scrolling via mouse wheel or buttons 4 and 5
x11-terms/rxvt-unicode:perl - Enable perl script support. You can still disable this at runtime with -pe ""
x11-terms/rxvt-unicode:unicode3 - Use 21 instead of 16 bits to represent unicode characters
x11-terms/rxvt-unicode:wide-glyphs - Enable support for wide glyphs, required for certain symbol/icon fonts to display correctly. Note that this feature is *unofficial* and has been observed to cause stability issues for some users.
x11-terms/terminology:extras - Install additional testing tools
x11-terms/xfce4-terminal:utempter - Include utmp management support via sys-libs/libutempter
x11-terms/xterm:openpty - Use openpty() in preference to posix_openpt()
x11-terms/xterm:sixel - Enable sixel graphics support
x11-terms/xterm:toolbar - Enable the xterm toolbar to be built
x11-themes/QGnomePlatform:minimal - Skip kde-frameworks/qqc2-desktop-style dependency (Warning: some apps could be wrongly rendered)
x11-themes/arc-theme:cinnamon - Install theme for gnome-extra/cinnamon
x11-themes/arc-theme:gnome-shell - Install theme for gnome-base/gnome-shell
x11-themes/arc-theme:gtk2 - Install GTK+2 theme
x11-themes/arc-theme:gtk3 - Install GTK+3 theme
x11-themes/arc-theme:gtk4 - Install GTK+4 theme
x11-themes/arc-theme:mate - Install Metacity theme for mate-base/mate
x11-themes/arc-theme:pre-rendered - Avoid media-gfx/inkscape and media-gfx/optipng dependencies by using pre-rendered PNGs
x11-themes/arc-theme:transparency - Enable transparency
x11-themes/arc-theme:xfce - Install theme for xfce-base/xfwm4
x11-themes/comix-xcursors:lefthanded - Install lefthanded version of theme in addition to default one.
x11-themes/comix-xcursors:opaque - Install non-transparent version of theme in addition to default one.
x11-themes/fluent-icon-theme:hardlink - Hardlink duplicate icons to greatly reduce installation size
x11-themes/fluent-icon-theme:round - Install the round version of symbolic icons
x11-themes/gentoo-artwork:grub - Install extra sys-boot/grub themes
x11-themes/gentoo-artwork:icons - Install icons
x11-themes/gentoo-artwork:lilo - Install extra sys-boot/lilo themes
x11-themes/gentoo-artwork:pixmaps - Install pixmaps
x11-themes/gtk-engines-murrine:animation-rtl - Progressbar animation from right to left
x11-themes/gtk-engines-murrine:themes - Pull in themes via x11-themes/murrine-themes
x11-themes/kfaenza:additional - Install additional KFaenza icons. See third homepage for details
x11-themes/tela-icon-theme:hardlink - Hardlink duplicate icons to greatly reduce installation size
x11-themes/vertex-theme:cinnamon - Install theme for gnome-extra/cinnamon
x11-themes/vertex-theme:gnome-shell - Install theme for gnome-base/gnome-shell
x11-themes/vertex-theme:mate - Install Metacity theme for mate-base/mate
x11-themes/vertex-theme:xfce - Install theme for xfce-base/xfwm4
x11-themes/zuki-themes:gnome-shell - Install theme for gnome-base/gnome-shell
x11-themes/zuki-themes:gtk2 - Install GTK+2 theme
x11-themes/zuki-themes:xfce - Install theme for xfce-base/xfwm4
x11-wm/ctwm:jpeg - Enable jpeg image support with virtual/jpeg
x11-wm/ctwm:test - Enable upstream test suite, build required binary
x11-wm/ctwm:xpm - Enable xpm icon support with x11-libs/libXpm
x11-wm/e16:debug - Build libtrip debugging library
x11-wm/e16:dialogs - Enable support for configuration dialogs
x11-wm/e16:libhack - Build libhack window mode helper library
x11-wm/e16:modules - Enable support for loadable modules
x11-wm/e16:no-container - Do not use container window (experimental)
x11-wm/e16:pango - Enable pango font rendering using x11-libs/pango
x11-wm/e16:player - Enable audio using aplay from media-sound/alsa-utils
x11-wm/e16:poll - Use poll() event handler API (recommended)
x11-wm/e16:select - Use select() event handler API
x11-wm/e16:themes - Install the official E16 themes using x11-themes/e16-themes
x11-wm/e16:xi2 - Enable the experimental multipointer input XInput2. This incldues the MultiPointer X feature
x11-wm/e16:xpresent - Enable support for the X Present extension via x11-libs/libXpresent (experimental)
x11-wm/e16:xrandr - Enable support for the X RandR extension via x11-libs/libXrandr
x11-wm/e16:xrender - Enable transparency support using the X Render extension via x11-libs/libXrender
x11-wm/e16:xsm - Enable X Session Management support using x11-libs/libSM
x11-wm/e16:xsync - Enable X Sync support
x11-wm/e16:zoom - Support resolution change of current window (zoom) usingx11-libs/libXxf86vm (xvidtune)
x11-wm/echinus:xrandr - Enable support for multihead configuration
x11-wm/enlightenment:xwayland - Enable XWayland application support
x11-wm/fluxbox:slit - Enables the Fluxbox slit (or dock)
x11-wm/fluxbox:systray - Enables the system tray in the Fluxbox toolbar
x11-wm/fluxbox:toolbar - Enables the Fluxbox toolbar
x11-wm/fvwm:lock - Enable screen locking
x11-wm/fvwm:netpbm - Enable NetPBM support (used by FvwmScript-ScreenDump)
x11-wm/fvwm:stroke - Mouse Gesture support
x11-wm/fvwm3:go - Enable building dev-lang/go code (FvwmPrompt)
x11-wm/fvwm3:lock - Enable screen locking
x11-wm/fvwm3:netpbm - Enable NetPBM support (used by FvwmScript-ScreenDump)
x11-wm/fvwm3:stroke - Mouse Gesture support
x11-wm/i3:doc - Build and install the HTML documentation and regenerate the man pages
x11-wm/icewm:gdk-pixbuf - Enable gdk-pixbuf rendering
x11-wm/jwm:pango - Bidirectional text layout support with pango using xft backend.
x11-wm/lumina:desktop-utils - Build and install lumina's desktop-utils
x11-wm/metacity:libcanberra - Enable sound event support using media-libs/libcanberra
x11-wm/metacity:vulkan - Enable Vulkan based compositor support via META_COMPOSITOR=vulkan environment variable
x11-wm/muffin:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
x11-wm/musca:apis - Optionally install the experimental `apis' window manager
x11-wm/musca:xlisten - Optionally install the xlisten utility
x11-wm/mutter:elogind - Rely on sys-auth/elogind as logind provider for Wayland sessions
x11-wm/mutter:sysprof - Enable profiling data capture support using dev-util/sysprof-capture
x11-wm/notion:xrandr - Add support for xrandr
x11-wm/openbox:session - Enables support for session managers
x11-wm/openbox:xdg - Install the python xdg files for xdg autostart
x11-wm/pekwm:contrib - Install optional extras in the documentation directory
x11-wm/pekwm:pango - Pango font support
x11-wm/pekwm:themes - Install additional themes
x11-wm/ratpoison:history - Use sys-libs/readline for history handling
x11-wm/ratpoison:sloppy - Install sloppy, a focus-follows-mouse implementation for ratpoison
x11-wm/ratpoison:xrandr - Enable support for XRandR
x11-wm/stumpwm:doc - Include documentation
x11-wm/windowmaker:modelock - Enable XKB language status lock support. README says: "If you don't know what it is you probably don't need it."
x11-wm/windowmaker:xrandr - Enable XRandR window extension support
x11-wm/wmfs:imlib2 - Enable image support through media-libs/imlib2
x11-wm/xmonad:no-autorepeat-keys - Allow ignoring of keyboard autorepeat.
x11-wm/xmonad-contrib:xft - Use Xft to render text
x11-wm/xpra:client - Build client-side code
x11-wm/xpra:clipboard - Enable clipboard support
x11-wm/xpra:csc - Enable csc softscaler support
x11-wm/xpra:gtk3 - Enable the GTK3 client
x11-wm/xpra:html - Install the HTML5 client
x11-wm/xpra:ibus - Use ibus input method via app-i18n/ibus
x11-wm/xpra:mdns - Enable Multicast DNS via dev-libs/mdns
x11-wm/xpra:oauth - Enable OAuth2 authentication in the server
x11-wm/xpra:openh264 - Enable H.264 support using media-libs/openh264
x11-wm/xpra:pinentry - Use app-crypt/pinentry for password entry
x11-wm/xpra:qrcode - Enable generating QRCodes for server URL via media-gfx/qrencode
x11-wm/xpra:server - Build server-side code
x11-wm/xpra:trayicon - Enable system tray icon
x11-wm/xpra:vpx - Enable vpx image format support
x11-wm/xpra:webcam - Enable webcam support via opencv
x11-wm/xpra:xdg - Enable support for XDG-based menus
xfce-base/libxfce4ui:glade - Build support for Glade 3's GtkBuilder implementation
xfce-base/libxfce4ui:system-info - Enable system information in xfce4-about.
xfce-base/thunar:trash-panel-plugin - Build the trash status indicator plugin for the XFCE panel
xfce-base/tumbler:epub - Enable support for .epub thumbnailer using app-text/libgepub
xfce-base/tumbler:odf - Enable support for .odf thumbnailers by using gnome-extra/libgsf
xfce-base/xfce4-meta:archive - Install app-arch/xarchiver.
xfce-base/xfce4-meta:editor - Install the app-editors/mousepad text editor.
xfce-base/xfce4-meta:image - Install the media-gfx/ristretto image viewer.
xfce-base/xfce4-meta:media - Install the media-video/parole media player.
xfce-base/xfce4-meta:mpd - Install the media-sound/xfmpc MPD client.
xfce-base/xfce4-meta:remote-fs - Install the x11-misc/gigolo frontend to manage remote filesystem connections.
xfce-base/xfce4-meta:search - Install the dev-util/catfish search tool frontend.
xfce-base/xfce4-panel:dbusmenu - Enable dev-libs/libdbusmenu integration (in status notifier plugin)
xfce-base/xfce4-power-manager:panel-plugin - Build the power management plugin for the XFCE panel
xfce-base/xfce4-settings:libcanberra - Enable sound event support using media-libs/libcanberra
xfce-base/xfce4-settings:xklavier - Enable keyboard layout selection support using x11-libs/libxklavier
xfce-base/xfdesktop:thunar - Build support for desktop icons (for example, launchers and folders)
xfce-base/xfwm4:xpresent - Enable the XPresent extension for sync to vblank
xfce-extra/xfce4-clipman-plugin:qrcode - Enable support for media-gfx/qrencode
xfce-extra/xfce4-mixer:keybinder - Enable support for global hotkeys using dev-libs/keybinder.
xfce-extra/xfce4-mixer:sndio - Enable media-sound/sndio backend.
xfce-extra/xfce4-pulseaudio-plugin:keybinder - Enable support for global hotkeys using dev-libs/keybinder.
xfce-extra/xfce4-pulseaudio-plugin:libcanberra - Enable sound event support using media-libs/libcanberra
xfce-extra/xfce4-pulseaudio-plugin:libxfce4windowing - Enable experimental support for raising media player windows using xfce-base/libxfce4windowing.
xfce-extra/xfce4-pulseaudio-plugin:wnck - Enable experimental support for raising media player windows using x11-libs/libwnck.
xfce-extra/xfce4-screensaver:locking - Enable screen locking support
xfce-extra/xfce4-whiskermenu-plugin:accountsservice - Enable support for AccountsService.