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# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

inherit autotools toolchain-funcs udev xdg

DESCRIPTION="Separate utilities ebuild from upstream v4l-utils package"
HOMEPAGE="https://git.linuxtv.org/v4l-utils.git"
SRC_URI="https://linuxtv.org/downloads/v4l-utils/${P}.tar.bz2"

LICENSE="GPL-2+ LGPL-2.1+"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~ppc ~ppc64 ~sparc ~x86"
IUSE="+bpf dvb opengl qt5 +udev"

RDEPEND="
	>=media-libs/libv4l-${PV}[dvb?]
	bpf? (
		dev-libs/libbpf:=
		virtual/libelf:=
	)
	udev? ( virtual/libudev )
	qt5? (
		dev-qt/qtcore:5
		dev-qt/qtgui:5
		dev-qt/qtwidgets:5
		opengl? ( dev-qt/qtopengl:5[-gles2(-)] virtual/opengl )
		media-libs/alsa-lib
	)
	!media-tv/v4l2-ctl
	!<media-tv/ivtv-utils-1.4.0-r2
"

DEPEND="
	${RDEPEND}
"

BDEPEND="
	sys-devel/gettext
	virtual/pkgconfig
	bpf? ( sys-devel/clang:*[llvm_targets_BPF] )
"

# Not really prebuilt but BPF objects make our QA checks go crazy.
QA_PREBUILT="*/rc_keymaps/protocols/*.o"

PATCHES=(
	"${FILESDIR}"/${PN}-1.24.1-musl-include.patch
	"${FILESDIR}"/${P}-musl-lfs.patch
)

check_llvm() {
	if [[ ${MERGE_TYPE} != binary ]] && use bpf; then
		local clang=${ac_cv_prog_CLANG:-${CLANG:-clang}}
		${clang} -target bpf -print-supported-cpus &>/dev/null ||
			die "${clang} does not support the BPF target. Please check LLVM_TARGETS."
	fi
}

pkg_pretend() {
	has_version -b sys-devel/clang && check_llvm
}

pkg_setup() {
	check_llvm
}

src_prepare() {
	default
	eautoreconf
}

src_configure() {
	if use qt5; then
		local qt5_paths=( \
			MOC="$($(tc-getPKG_CONFIG) --variable=host_bins Qt5Core)/moc" \
			UIC="$($(tc-getPKG_CONFIG) --variable=host_bins Qt5Core)/uic" \
			RCC="$($(tc-getPKG_CONFIG) --variable=host_bins Qt5Core)/rcc" \
		)
		if ! use opengl; then
			sed -e 's/Qt5OpenGL/DiSaBlEd/g' -i configure || die
		fi
	fi

	# Hard disable the flags that apply only to the libs.
	econf \
		--disable-static \
		$(use_enable dvb libdvbv5) \
		$(use_enable qt5 qv4l2) \
		$(use_enable qt5 qvidcap) \
		$(use_enable bpf) \
		--without-jpeg \
		$(use_with udev libudev) \
		--with-udevdir="$(get_udevdir)" \
		"${qt5_paths[@]}"
}

src_install() {
	emake -C utils DESTDIR="${D}" install
	emake -C contrib DESTDIR="${D}" install

	dodoc README.md
	newdoc utils/libv4l2util/TODO TODO.libv4l2util
	newdoc utils/libmedia_dev/README README.libmedia_dev
	newdoc utils/dvb/README README.dvb
	newdoc utils/v4l2-compliance/fixme.txt fixme.txt.v4l2-compliance
}

pkg_postinst() {
	xdg_pkg_postinst
	use udev && udev_reload

	if [[ -n ${REPLACING_VERSIONS} ]] && ver_test 1.20.0 -ge ${REPLACING_VERSIONS%% *}; then
		ewarn "WARNING! ir-keytable has changed significantly from version 1.20.0 so"
		ewarn "you may need to take action to avoid breakage. See"
		ewarn "https://bugs.gentoo.org/767175 for more details."
	fi
}

pkg_postrm() {
	xdg_pkg_postrm
	use udev && udev_reload
}