gentoo resync : 02.04.2018

3 files changed, 478 insertions, 0 deletions

diff --git a/sys-boot/grub/Manifest b/sys-boot/grub/Manifest
index d8307cce1ade..918ff495e353 100644
--- a/sys-boot/grub/Manifest
+++ b/sys-boot/grub/Manifest
@@ -1,3 +1,4 @@
+AUX 2.02-multiple-early-initrd.patch 6771 BLAKE2B 088d1178c51ea7526bd7620ae0f8160c10d3673afd0ae3407e35673cb438875e24e13f8455245c36792814751995df1235d975eb036e97813e677250af403a9d SHA512 41450b475fb83ade629d165ae2c30682e5beb2edbfd148c6388bb720241f0682b20aa0456bc624d5e9f5605616ea27fab32a829ede6c8c673e1c88e6b774a5a8
 AUX gfxpayload.patch 1118 BLAKE2B 4104fc696535b1c3feba5876bccc64f9b2e52319ee992c59e7f17b8310cc9addf7545630fff78c73ca3f4b0dcd44e1bf69f4df5264d6f58777f7e5aeae93cbcb SHA512 00324825c369902a0383b792cd21e161853eadccbdc5abe2420f2d443bf6a74f72be6c15243107b936acd38c3547387c3771dc2cb566003c4c754c9260b4aa00
 AUX grub-0.97-Add-esp-to-list-of-clobbered-registers.patch 1612 BLAKE2B a8169fc73299a2a0bf59d66f0226da436bef249d543d3509d1c45bd355b0beceab66369ea1c5c4b8e78cb8a8084fbabd6fc09da8efdc0ffac427dc67142a5773 SHA512 85241fc4f939cbf6dc9e18b0b68034835bcb4ac7162fa1dc497e169422b66f0320d59d8270bc13c827a325f45d260028276641cff3f12b4d6096e2d33a12261b
 AUX grub-0.97-ncurses-pkgconfig.patch 799 BLAKE2B da34dca4e6009b6386d66e0b05264293e4095007239558712a0fa7a0b18a8f05112840f1f25355298a67cffe441621e4dbf14a4373d1fe6d91144fad4b799173 SHA512 9456c422e05e75e4221101d66bf1c1ba3efa195ef67872a75790362da825bffe1bcd74c5ff6e3f5a9ccda6b364f02c631c0d513c0de5aa19a78be9bea525c13f
@@ -13,6 +14,7 @@ DIST splash.xpm.gz 33856 BLAKE2B e8d0ee91a87ed45f47fa58b07a6476b19ddb3f98ffee41a
 DIST unifont-9.0.06.pcf.gz 1360354 BLAKE2B 09b96e1711c729ef159d62e3ea7b289ca2d01dc0ea417e35a18b73dc02a23f62ce7821d9761bceee4002d9eeaabd91cfb69bbacc6fbdfdfa00445d18fe8f1d66 SHA512 dd0a1afa72f5204c62055d83f22750c74af38ffafdb8eda8e1f1cf7292e572a14969b8a9a6a2cb336d5bed4ab633f6b5a962c59117a590e4238788959cb82774
 EBUILD grub-0.97-r16.ebuild 9596 BLAKE2B ff6e369d331c18300a8a5b73232d5381ffecac3364ce2c789e3db2f510f1d0ebc929994eaafa41cec4193676c39022f4bda868afd95d5ee15dfa61fadba29bf8 SHA512 26aa6178cc463e79cf3416773517e35606aca9d8721da2f6aee0d5b7db223b32e4ca812188a488734784a5725646daceff24b3ae9d8e14452becad1ce25ebff1
 EBUILD grub-0.97-r18.ebuild 10141 BLAKE2B 7af15e1634c7e96930a7ddaa72d9ab7adae72a0b62729d65d52fd86262d7a7c2a27e2a59c412733463bccc83e9b30d62408d5bebb30f90c99135c05fabc140e7 SHA512 d9c481f77fa1d2f750b64de8cfa02f52be9a0d563607ca50117e4792add79b21e3fb34dc448beebbbb7a99153b9dc5cad01d447209fae154a8205864593c89d6
+EBUILD grub-2.02-r1.ebuild 7647 BLAKE2B c32dc14fa12382273b0d990e7888a28b77939cb0d9f66aa687f48f93ddf3cb6f2929f6c9c486e22ef0b309c6e4403f1bdbe79ed7c3ed4a17a86b825d8a251108 SHA512 af60ccfb20a4bed7027c942e68c9103a2b7711c3ca2dd0dc54eafa0ab7d67c345d5b6210036d2adc7df4603ffd4dfc2e75660421f5d99b6990d781ebdddcdf9c
 EBUILD grub-2.02.ebuild 7597 BLAKE2B 31631da1a5c9c871ecfff60f9508bc81b557ed25226b70f31b0157611db6ea237e269f44fc0789215c19c32f4633cb9e0ca1293c3af2dc86b6e6b4ffb78538ed SHA512 d3aa7a602989d0eee9c48ddd527253099cfb81887171c69add1f83fea36bac295147fc11cd9cdd2c06410670c435cf1c3f20303660675aa936668b04178cb8ba
 EBUILD grub-9999.ebuild 7599 BLAKE2B 1a4dea600c7763b2be97adb02a9ccb3004f1dd565e6bb98f1fd14e063931c98698332bf0a58c1d709f645afff834cadfc021032044229b1313af658bc1551b60 SHA512 cfb7ffc4a2d94d0ceaaf6fa63d6c587b8c35488c3f00cc667073926a00c90044c58e94f69e53d765b13ea792f7e79e49b59529ad2788460367259ad2524bd410
 MISC metadata.xml 1488 BLAKE2B 3aa41f3c6c45258892bcf2800bfe09b506d11aa69a3071977e58736e496b72b71df579cfcaf1d14a3b81db695aca0bf7dbcc7a18faf1c62dd05f033bdafb00c8 SHA512 71f3e48b73c3d20f213ae928b16499131417562d98b83f2d82a5fb026c8cc06ecddf9db32565d9e1602d4258f7a2cc1796eb523c4cb98fb6b7753328a29e93ba
diff --git a/sys-boot/grub/files/2.02-multiple-early-initrd.patch b/sys-boot/grub/files/2.02-multiple-early-initrd.patch
new file mode 100644
index 000000000000..74b576f8b007
--- /dev/null
+++ b/sys-boot/grub/files/2.02-multiple-early-initrd.patch
@@ -0,0 +1,177 @@
+From a698240df0c43278b2d1d7259c8e7a6926c63112 Mon Sep 17 00:00:00 2001
+From: "Matthew S. Turnbull" <sparky@bluefang-logic.com>
+Date: Sat, 24 Feb 2018 17:44:58 -0500
+Subject: grub-mkconfig/10_linux: Support multiple early initrd images
+
+Add support for multiple, shared, early initrd images. These early
+images will be loaded in the order declared, and all will be loaded
+before the initrd image.
+
+While many classes of data can be provided by early images, the
+immediate use case would be for distributions to provide CPU
+microcode to mitigate the Meltdown and Spectre vulnerabilities.
+
+There are two environment variables provided for declaring the early
+images.
+
+* GRUB_EARLY_INITRD_LINUX_STOCK is for the distribution declare
+  images that are provided by the distribution or installed packages.
+  If undeclared, this will default to a set of common microcode image
+  names.
+
+* GRUB_EARLY_INITRD_LINUX_CUSTOM is for user created images. User
+  images will be loaded after the stock images.
+
+These separate configurations allow the distribution and user to
+declare different image sets without clobbering each other.
+
+This also makes a minor update to ensure that UUID partition labels
+stay disabled when no initrd image is found, even if early images are
+present.
+
+This is a continuation of a previous patch published by Christian
+Hesse in 2016:
+http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00025.html
+
+Down stream Gentoo bug:
+https://bugs.gentoo.org/645088
+
+Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
+Signed-off-by: Matthew S. Turnbull <sparky@bluefang-logic.com>
+Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
+---
+ docs/grub.texi          | 19 +++++++++++++++++++
+ util/grub-mkconfig.in   |  8 ++++++++
+ util/grub.d/10_linux.in | 33 +++++++++++++++++++++++++++------
+ 3 files changed, 54 insertions(+), 6 deletions(-)
+
+diff --git a/docs/grub.texi b/docs/grub.texi
+index 137b894..65b4bbe 100644
+--- a/docs/grub.texi
++++ b/docs/grub.texi
+@@ -1398,6 +1398,25 @@ for all respectively normal entries.
+ The values of these options replace the values of @samp{GRUB_CMDLINE_LINUX}
+ and @samp{GRUB_CMDLINE_LINUX_DEFAULT} for Linux and Xen menu entries.
+ 
++@item GRUB_EARLY_INITRD_LINUX_CUSTOM
++@itemx GRUB_EARLY_INITRD_LINUX_STOCK
++List of space-separated early initrd images to be loaded from @samp{/boot}.
++This is for loading things like CPU microcode, firmware, ACPI tables, crypto
++keys, and so on. These early images will be loaded in the order declared,
++and all will be loaded before the actual functional initrd image.
++
++@samp{GRUB_EARLY_INITRD_LINUX_STOCK} is for your distribution to declare
++images that are provided by the distribution. It should not be modified
++without understanding the consequences. They will be loaded first.
++
++@samp{GRUB_EARLY_INITRD_LINUX_CUSTOM} is for your custom created images.
++
++The default stock images are as follows, though they may be overridden by
++your distribution:
++@example
++intel-uc.img intel-ucode.img amd-uc.img amd-ucode.img early_ucode.cpio microcode.cpio
++@end example
++
+ @item GRUB_DISABLE_LINUX_UUID
+ Normally, @command{grub-mkconfig} will generate menu entries that use
+ universally-unique identifiers (UUIDs) to identify the root filesystem to
+diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
+index f8496d2..35ef583 100644
+--- a/util/grub-mkconfig.in
++++ b/util/grub-mkconfig.in
+@@ -147,6 +147,12 @@ if [ x"$GRUB_FS" = xunknown ]; then
+     GRUB_FS="$(stat -f --printf=%T / || echo unknown)"
+ fi
+ 
++# Provide a default set of stock linux early initrd images.
++# Define here so the list can be modified in the sourced config file.
++if [ "x${GRUB_EARLY_INITRD_LINUX_STOCK}" = "x" ]; then
++	GRUB_EARLY_INITRD_LINUX_STOCK="intel-uc.img intel-ucode.img amd-uc.img amd-ucode.img early_ucode.cpio microcode.cpio"
++fi
++
+ if test -f ${sysconfdir}/default/grub ; then
+   . ${sysconfdir}/default/grub
+ fi
+@@ -211,6 +217,8 @@ export GRUB_DEFAULT \
+   GRUB_CMDLINE_NETBSD \
+   GRUB_CMDLINE_NETBSD_DEFAULT \
+   GRUB_CMDLINE_GNUMACH \
++  GRUB_EARLY_INITRD_LINUX_CUSTOM \
++  GRUB_EARLY_INITRD_LINUX_STOCK \
+   GRUB_TERMINAL_INPUT \
+   GRUB_TERMINAL_OUTPUT \
+   GRUB_SERIAL_COMMAND \
+diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
+index de9044c..faedf74 100644
+--- a/util/grub.d/10_linux.in
++++ b/util/grub.d/10_linux.in
+@@ -136,9 +136,13 @@ EOF
+   if test -n "${initrd}" ; then
+     # TRANSLATORS: ramdisk isn't identifier. Should be translated.
+     message="$(gettext_printf "Loading initial ramdisk ...")"
++    initrd_path=
++    for i in ${initrd}; do
++      initrd_path="${initrd_path} ${rel_dirname}/${i}"
++    done
+     sed "s/^/$submenu_indentation/" << EOF
+ 	echo	'$(echo "$message" | grub_quote)'
+-	initrd	${rel_dirname}/${initrd}
++	initrd	$(echo $initrd_path)
+ EOF
+   fi
+   sed "s/^/$submenu_indentation/" << EOF
+@@ -188,7 +192,15 @@ while [ "x$list" != "x" ] ; do
+   alt_version=`echo $version | sed -e "s,\.old$,,g"`
+   linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
+ 
+-  initrd=
++  initrd_early=
++  for i in ${GRUB_EARLY_INITRD_LINUX_STOCK} \
++	   ${GRUB_EARLY_INITRD_LINUX_CUSTOM}; do
++    if test -e "${dirname}/${i}" ; then
++      initrd_early="${initrd_early} ${i}"
++    fi
++  done
++
++  initrd_real=
+   for i in "initrd.img-${version}" "initrd-${version}.img" "initrd-${version}.gz" \
+ 	   "initrd-${version}" "initramfs-${version}.img" \
+ 	   "initrd.img-${alt_version}" "initrd-${alt_version}.img" \
+@@ -198,11 +210,22 @@ while [ "x$list" != "x" ] ; do
+ 	   "initramfs-genkernel-${GENKERNEL_ARCH}-${version}" \
+ 	   "initramfs-genkernel-${GENKERNEL_ARCH}-${alt_version}"; do
+     if test -e "${dirname}/${i}" ; then
+-      initrd="$i"
++      initrd_real="${i}"
+       break
+     fi
+   done
+ 
++  initrd=
++  if test -n "${initrd_early}" || test -n "${initrd_real}"; then
++    initrd="${initrd_early} ${initrd_real}"
++
++    initrd_display=
++    for i in ${initrd}; do
++      initrd_display="${initrd_display} ${dirname}/${i}"
++    done
++    gettext_printf "Found initrd image: %s\n" "$(echo $initrd_display)" >&2
++  fi
++
+   config=
+   for i in "${dirname}/config-${version}" "${dirname}/config-${alt_version}" "/etc/kernels/kernel-config-${version}" ; do
+     if test -e "${i}" ; then
+@@ -216,9 +239,7 @@ while [ "x$list" != "x" ] ; do
+       initramfs=`grep CONFIG_INITRAMFS_SOURCE= "${config}" | cut -f2 -d= | tr -d \"`
+   fi
+ 
+-  if test -n "${initrd}" ; then
+-    gettext_printf "Found initrd image: %s\n" "${dirname}/${initrd}" >&2
+-  elif test -z "${initramfs}" ; then
++  if test -z "${initramfs}" && test -z "${initrd_real}" ; then
+     # "UUID=" and "ZFS=" magic is parsed by initrd or initramfs.  Since there's
+     # no initrd or builtin initramfs, it can't work here.
+     linux_root_device_thisversion=${GRUB_DEVICE}
+-- 
+cgit v1.0-41-gc330
+
diff --git a/sys-boot/grub/grub-2.02-r1.ebuild b/sys-boot/grub/grub-2.02-r1.ebuild
new file mode 100644
index 000000000000..7b3b5251bc11
--- /dev/null
+++ b/sys-boot/grub/grub-2.02-r1.ebuild
@@ -0,0 +1,299 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+if [[ ${PV} == 9999  ]]; then
+	GRUB_AUTOGEN=1
+fi
+
+if [[ -n ${GRUB_AUTOGEN} ]]; then
+	PYTHON_COMPAT=( python{2_7,3_3,3_4,3_5} )
+	WANT_LIBTOOL=none
+	inherit autotools python-any-r1
+fi
+
+inherit autotools bash-completion-r1 flag-o-matic multibuild pax-utils toolchain-funcs versionator
+
+if [[ ${PV} != 9999 ]]; then
+	if [[ ${PV} == *_alpha* || ${PV} == *_beta* || ${PV} == *_rc* ]]; then
+		# The quote style is to work with <=bash-4.2 and >=bash-4.3 #503860
+		MY_P=${P/_/'~'}
+		SRC_URI="mirror://gnu-alpha/${PN}/${MY_P}.tar.xz"
+		S=${WORKDIR}/${MY_P}
+	else
+		SRC_URI="mirror://gnu/${PN}/${P}.tar.xz"
+		S=${WORKDIR}/${P%_*}
+	fi
+	KEYWORDS="~amd64 ~arm64 ~x86"
+else
+	inherit git-r3
+	EGIT_REPO_URI="git://git.sv.gnu.org/grub.git
+		http://git.savannah.gnu.org/r/grub.git"
+fi
+
+PATCHES=(
+	"${FILESDIR}"/gfxpayload.patch
+	"${FILESDIR}"/grub-2.02_beta2-KERNEL_GLOBS.patch
+	"${FILESDIR}"/2.02-multiple-early-initrd.patch
+)
+
+DEJAVU=dejavu-sans-ttf-2.37
+UNIFONT=unifont-9.0.06
+SRC_URI+=" fonts? ( mirror://gnu/unifont/${UNIFONT}/${UNIFONT}.pcf.gz )
+	themes? ( mirror://sourceforge/dejavu/${DEJAVU}.zip )"
+
+DESCRIPTION="GNU GRUB boot loader"
+HOMEPAGE="https://www.gnu.org/software/grub/"
+
+# Includes licenses for dejavu and unifont
+LICENSE="GPL-3 fonts? ( GPL-2-with-font-exception ) themes? ( BitstreamVera )"
+SLOT="2/${PVR}"
+IUSE="debug device-mapper doc efiemu +fonts mount multislot nls static sdl test +themes truetype libzfs"
+
+GRUB_ALL_PLATFORMS=( coreboot efi-32 efi-64 emu ieee1275 loongson multiboot qemu qemu-mips pc uboot xen xen-32 )
+IUSE+=" ${GRUB_ALL_PLATFORMS[@]/#/grub_platforms_}"
+
+REQUIRED_USE="
+	grub_platforms_coreboot? ( fonts )
+	grub_platforms_qemu? ( fonts )
+	grub_platforms_ieee1275? ( fonts )
+	grub_platforms_loongson? ( fonts )
+"
+
+# os-prober: Used on runtime to detect other OSes
+# xorriso (dev-libs/libisoburn): Used on runtime for mkrescue
+RDEPEND="
+	app-arch/xz-utils
+	>=sys-libs/ncurses-5.2-r5:0=
+	debug? (
+		sdl? ( media-libs/libsdl )
+	)
+	device-mapper? ( >=sys-fs/lvm2-2.02.45 )
+	libzfs? ( sys-fs/zfs )
+	mount? ( sys-fs/fuse )
+	truetype? ( media-libs/freetype:2= )
+	ppc? ( sys-apps/ibm-powerpc-utils sys-apps/powerpc-utils )
+	ppc64? ( sys-apps/ibm-powerpc-utils sys-apps/powerpc-utils )
+"
+DEPEND="${RDEPEND}
+	${PYTHON_DEPS}
+	app-misc/pax-utils
+	sys-devel/flex
+	sys-devel/bison
+	sys-apps/help2man
+	sys-apps/texinfo
+	fonts? ( media-libs/freetype:2 )
+	grub_platforms_xen? ( app-emulation/xen-tools:= )
+	grub_platforms_xen-32? ( app-emulation/xen-tools:= )
+	static? (
+		app-arch/xz-utils[static-libs(+)]
+		truetype? (
+			app-arch/bzip2[static-libs(+)]
+			media-libs/freetype[static-libs(+)]
+			sys-libs/zlib[static-libs(+)]
+		)
+	)
+	test? (
+		app-admin/genromfs
+		app-arch/cpio
+		app-arch/lzop
+		app-emulation/qemu
+		dev-libs/libisoburn
+		sys-apps/miscfiles
+		sys-block/parted
+		sys-fs/squashfs-tools
+	)
+	themes? (
+		app-arch/unzip
+		media-libs/freetype:2
+	)
+"
+RDEPEND+="
+	kernel_linux? (
+		grub_platforms_efi-32? ( sys-boot/efibootmgr )
+		grub_platforms_efi-64? ( sys-boot/efibootmgr )
+	)
+	!multislot? ( !sys-boot/grub:0 !sys-boot/grub-static )
+	nls? ( sys-devel/gettext )
+"
+
+DEPEND+=" !!=media-libs/freetype-2.5.4"
+
+RESTRICT="strip !test? ( test )"
+
+QA_EXECSTACK="usr/bin/grub*-emu* usr/lib/grub/*"
+QA_WX_LOAD="usr/lib/grub/*"
+QA_MULTILIB_PATHS="usr/lib/grub/.*"
+
+src_unpack() {
+	if [[ ${PV} == 9999 ]]; then
+		git-r3_src_unpack
+	fi
+	default
+}
+
+src_prepare() {
+	default
+
+	sed -i -e /autoreconf/d autogen.sh || die
+
+	if use multislot; then
+		# fix texinfo file name, bug 416035
+		sed -i -e 's/^\* GRUB:/* GRUB2:/' -e 's/(grub)/(grub2)/' docs/grub.texi || die
+	fi
+
+	# Nothing in Gentoo packages 'american-english' in the exact path
+	# wanted for the test, but all that is needed is a compressible text
+	# file, and we do have 'words' from miscfiles in the same path.
+	sed -i \
+		-e '/CFILESSRC.*=/s,american-english,words,' \
+		tests/util/grub-fs-tester.in \
+		|| die
+
+	if [[ -n ${GRUB_AUTOGEN} ]]; then
+		python_setup
+		bash autogen.sh || die
+		autopoint() { :; }
+		eautoreconf
+	fi
+}
+
+grub_do() {
+	multibuild_foreach_variant run_in_build_dir "$@"
+}
+
+grub_do_once() {
+	multibuild_for_best_variant run_in_build_dir "$@"
+}
+
+grub_configure() {
+	local platform
+
+	case ${MULTIBUILD_VARIANT} in
+		efi*) platform=efi ;;
+		xen*) platform=xen ;;
+		guessed) ;;
+		*) platform=${MULTIBUILD_VARIANT} ;;
+	esac
+
+	case ${MULTIBUILD_VARIANT} in
+		*-32)
+			if [[ ${CTARGET:-${CHOST}} == x86_64* ]]; then
+				local CTARGET=i386
+			fi ;;
+		*-64)
+			if [[ ${CTARGET:-${CHOST}} == i?86* ]]; then
+				local CTARGET=x86_64
+				local -x TARGET_CFLAGS="-Os -march=x86-64 ${TARGET_CFLAGS}"
+				local -x TARGET_CPPFLAGS="-march=x86-64 ${TARGET_CPPFLAGS}"
+			fi ;;
+	esac
+
+	local myeconfargs=(
+		--disable-werror
+		--program-prefix=
+		--libdir="${EPREFIX}"/usr/lib
+		--htmldir="${EPREFIX}"/usr/share/doc/${PF}/html
+		$(use_enable debug mm-debug)
+		$(use_enable device-mapper)
+		$(use_enable mount grub-mount)
+		$(use_enable nls)
+		$(use_enable themes grub-themes)
+		$(use_enable truetype grub-mkfont)
+		$(use_enable libzfs)
+		$(use sdl && use_enable debug grub-emu-sdl)
+		${platform:+--with-platform=}${platform}
+
+		# Let configure detect this where supported
+		$(usex efiemu '' '--disable-efiemu')
+	)
+
+	if use multislot; then
+		myeconfargs+=( --program-transform-name="s,grub,grub2," )
+	fi
+
+	# Set up font symlinks
+	ln -s "${WORKDIR}/${UNIFONT}.pcf" unifont.pcf || die
+	if use themes; then
+		ln -s "${WORKDIR}/${DEJAVU}/ttf/DejaVuSans.ttf" DejaVuSans.ttf || die
+	fi
+
+	local ECONF_SOURCE="${S}"
+	econf "${myeconfargs[@]}"
+}
+
+src_configure() {
+	# Bug 508758.
+	replace-flags -O3 -O2
+
+	# We don't want to leak flags onto boot code.
+	export HOST_CCASFLAGS=${CCASFLAGS}
+	export HOST_CFLAGS=${CFLAGS}
+	export HOST_CPPFLAGS=${CPPFLAGS}
+	export HOST_LDFLAGS=${LDFLAGS}
+	unset CCASFLAGS CFLAGS CPPFLAGS LDFLAGS
+
+	use static && HOST_LDFLAGS+=" -static"
+
+	tc-ld-disable-gold #439082 #466536 #526348
+	export TARGET_LDFLAGS="${TARGET_LDFLAGS} ${LDFLAGS}"
+	unset LDFLAGS
+
+	tc-export CC NM OBJCOPY RANLIB STRIP
+	tc-export BUILD_CC # Bug 485592
+
+	MULTIBUILD_VARIANTS=()
+	local p
+	for p in "${GRUB_ALL_PLATFORMS[@]}"; do
+		use "grub_platforms_${p}" && MULTIBUILD_VARIANTS+=( "${p}" )
+	done
+	[[ ${#MULTIBUILD_VARIANTS[@]} -eq 0 ]] && MULTIBUILD_VARIANTS=( guessed )
+	grub_do grub_configure
+}
+
+src_compile() {
+	# Sandbox bug 404013.
+	use libzfs && addpredict /etc/dfs:/dev/zfs
+
+	grub_do emake
+	use doc && grub_do_once emake -C docs html
+}
+
+src_test() {
+	# The qemu dependency is a bit complex.
+	# You will need to adjust QEMU_SOFTMMU_TARGETS to match the cpu/platform.
+	grub_do emake check
+}
+
+src_install() {
+	grub_do emake install DESTDIR="${D}" bashcompletiondir="$(get_bashcompdir)"
+	use doc && grub_do_once emake -C docs install-html DESTDIR="${D}"
+
+	einstalldocs
+
+	if use multislot; then
+		mv "${ED%/}"/usr/share/info/grub{,2}.info || die
+	fi
+
+	insinto /etc/default
+	newins "${FILESDIR}"/grub.default-3 grub
+}
+
+pkg_postinst() {
+	elog "For information on how to configure GRUB2 please refer to the guide:"
+	elog "    https://wiki.gentoo.org/wiki/GRUB2_Quick_Start"
+
+	if has_version 'sys-boot/grub:0'; then
+		elog "A migration guide for GRUB Legacy users is available:"
+		elog "    https://wiki.gentoo.org/wiki/GRUB2_Migration"
+	fi
+
+	if [[ -z ${REPLACING_VERSIONS} ]]; then
+		elog
+		elog "You may consider installing the following optional packages:"
+		optfeature "Detect other operating systems (grub-mkconfig)" sys-boot/os-prober
+		optfeature "Create rescue media (grub-mkrescue)" dev-libs/libisoburn
+		optfeature "Enable RAID device detection" sys-fs/mdadm
+	fi
+}