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# Copyright 1999-2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
# Check for bumps & cleanup with app-misc/ddcui
inherit autotools linux-info udev
DESCRIPTION="Program for querying and changing monitor settings"
HOMEPAGE="https://www.ddcutil.com/"
SRC_URI="https://github.com/rockowitz/ddcutil/archive/v${PV}.tar.gz -> ${P}.tar.gz"
LICENSE="GPL-2+"
SLOT="0/5"
KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~sparc ~x86"
IUSE="usb-monitor user-permissions video_cards_nvidia X"
# In 2.2.0, DRM seems fairly embedded and non-optional even if the
# build system option exists. Fails to build.
RDEPEND="
dev-libs/glib:2
>=dev-libs/jansson-2
sys-apps/i2c-tools
virtual/udev
x11-libs/libdrm
usb-monitor? (
dev-libs/hidapi
virtual/libusb:1
sys-apps/usbutils
)
user-permissions? (
acct-group/i2c
)
X? (
x11-libs/libXrandr
x11-libs/libX11
)
"
DEPEND="${RDEPEND}"
BDEPEND="virtual/pkgconfig"
# doc? ( app-text/doxygen[dot] )
PATCHES=(
"${FILESDIR}"/${PN}-1.4.1-no-werror.patch
"${FILESDIR}"/${PN}-2.1.4-fix-clang.patch
"${FILESDIR}"/${P}-fix-clang.patch
"${FILESDIR}"/${P}-fix-build-without-X.patch
)
pkg_pretend() {
# This program needs /dev/ic2-* devices to communicate with the monitor.
CONFIG_CHECK="~I2C_CHARDEV"
ERROR_I2C_CHARDEV="You must enable I2C_CHARDEV in your kernel to continue"
if use usb-monitor; then
CONFIG_CHECK+=" ~HIDRAW ~USB_HIDDEV"
ERROR_HIDRAW="HIDRAW is needed to support USB monitors"
ERROR_I2C_CHARDEV="USB_HIDDEV is needed to support USB monitors"
fi
# Now do the actual checks setup above
check_extra_config
}
src_prepare() {
default
eautoreconf
}
src_configure() {
local myeconfargs=(
# FAILS: doxyfile: No such file or directory
# $(use_enable doc doxygen)
--enable-drm
--enable-udev
$(use_enable usb-monitor usb)
--enable-lib
$(use_enable X x11)
)
econf "${myeconfargs[@]}"
}
src_install() {
default
if use user-permissions; then
udev_dorules data/usr/lib/udev/rules.d/60-ddcutil-i2c.rules
fi
}
pkg_postinst() {
if use user-permissions; then
einfo "To allow non-root users access to the /dev/i2c-* devices, add those"
einfo "users to the i2c group: usermod -aG i2c user"
einfo "Restart the computer or reload the i2c-dev module to activate"
einfo "the new udev rule."
einfo "For more information read: http://www.ddcutil.com/i2c_permissions/"
udev_reload
fi
if use video_cards_nvidia; then
ewarn "Please read the following webpage on proper usage with the nVidia "
ewarn "binary drivers, or it may not work: http://www.ddcutil.com/nvidia/"
fi
}
pkg_postrm() {
if use user-permissions; then
udev_reload
fi
}
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