media-libs/x265: quickfix for missing lib and .pc if no git(1)

-DGIT_ARCHETYPE is not a real option but something the Version.cmake
would hard set(...) and overwrite, however if dev-vcs/git is not
found it skips that entirely.

i.e. if GIT_FOUND then use .git if found, else use .txt version.

Setting this tells it to use the latter if missing, if found then
doing so does nothing given cmake will overwrite it.

If no version/tag, the source/CMakeLists.txt acts on this comment:

    "# shared library is not installed if a tag is not found"

Closes: https://bugs.gentoo.org/812398
Closes: https://bugs.gentoo.org/814116
Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

2 files changed, 220 insertions, 0 deletions

diff --git a/media-libs/x265/x265-3.5-r1.ebuild b/media-libs/x265/x265-3.5-r1.ebuild
new file mode 100644
index 000000000000..3e0116c5da00
--- /dev/null
+++ b/media-libs/x265/x265-3.5-r1.ebuild
@@ -0,0 +1,219 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake multilib-minimal multilib multibuild flag-o-matic
+
+if [[ ${PV} = 9999* ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://bitbucket.org/multicoreware/x265_git/"
+	S=${WORKDIR}/${P}/source
+else
+	SRC_URI="https://bitbucket.org/multicoreware/x265_git/downloads/${PN}_${PV}.tar.gz"
+	KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 ~x86"
+fi
+
+DESCRIPTION="Library for encoding video streams into the H.265/HEVC format"
+HOMEPAGE="http://x265.org/ https://bitbucket.org/multicoreware/x265_git/"
+
+LICENSE="GPL-2"
+# subslot = libx265 soname
+SLOT="0/199"
+IUSE="+10bit +12bit cpu_flags_arm_neon cpu_flags_ppc_vsx2 numa pic test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="numa? ( >=sys-process/numactl-2.0.10-r1[${MULTILIB_USEDEP}] )"
+DEPEND="${RDEPEND}"
+ASM_DEPEND=">=dev-lang/nasm-2.13"
+BDEPEND="
+	abi_x86_32? ( ${ASM_DEPEND} )
+	abi_x86_64? ( ${ASM_DEPEND} )"
+
+PATCHES=(
+	"${FILESDIR}/arm-r1.patch"
+	"${FILESDIR}/neon.patch"
+	"${FILESDIR}/x265-3.3-ppc64.patch"
+	"${FILESDIR}/tests.patch"
+	"${FILESDIR}/test-ns.patch"
+)
+
+src_unpack() {
+	if [[ ${PV} = 9999* ]]; then
+		git-r3_src_unpack
+	else
+		unpack ${A}
+		export S="$(echo "${WORKDIR}/${PN}_"*"/source")"
+	fi
+}
+
+# By default, the library and the encoder is configured for only one output bit
+# depth. Meaning, one has to rebuild libx265 if (s)he wants to produce HEVC
+# files with a different bit depth, which is annoying. However, upstream
+# supports proper namespacing for 8bits, 10bits & 12bits HEVC and linking all
+# that together so that the resulting library can produce all three of them
+# instead of only one.
+# The API requires the bit depth parameter, so that libx265 can then chose which
+# variant of the encoder to use.
+# To achieve this, we have to build one (static) library for each non-main
+# variant, and link it into the main library.
+# Upstream documents using the 8bit variant as main library, hence we do not
+# allow disabling it: "main" *MUST* come last in the following list.
+
+x265_get_variants() {
+	local variants=""
+	use 12bit && variants+="main12 "
+	use 10bit && variants+="main10 "
+	variants+="main"
+	echo "${variants}"
+}
+
+x265_variant_src_configure() {
+	mkdir -p "${BUILD_DIR}" || die
+	pushd "${BUILD_DIR}" >/dev/null || die
+
+	einfo "Configuring variant: ${MULTIBUILD_VARIANT} for ABI: ${ABI}"
+
+	local mycmakeargs=( "${myabicmakeargs[@]}" )
+	case "${MULTIBUILD_VARIANT}" in
+		"main12")
+			mycmakeargs+=(
+				-DHIGH_BIT_DEPTH=ON
+				-DEXPORT_C_API=OFF
+				-DENABLE_SHARED=OFF
+				-DENABLE_CLI=OFF
+				-DMAIN12=ON
+			)
+			if [[ ${ABI} = x86 ]] ; then
+				mycmakeargs+=( -DENABLE_ASSEMBLY=OFF )
+			fi
+			if [[ ${ABI} = arm* ]] ; then
+				# 589674
+				mycmakeargs+=( -DENABLE_ASSEMBLY=OFF )
+			fi
+			# disable altivec for 12bit build #607802#c5
+			if [[ ${ABI} = ppc* ]] ; then
+				mycmakeargs+=(
+					-DENABLE_ALTIVEC=OFF
+					-DCPU_POWER8=$(usex cpu_flags_ppc_vsx2 ON OFF)
+				)
+			fi
+			;;
+		"main10")
+			mycmakeargs+=(
+				-DHIGH_BIT_DEPTH=ON
+				-DEXPORT_C_API=OFF
+				-DENABLE_SHARED=OFF
+				-DENABLE_CLI=OFF
+			)
+			if [[ ${ABI} = x86 ]] ; then
+				mycmakeargs+=( -DENABLE_ASSEMBLY=OFF )
+			fi
+			if [[ ${ABI} = arm* ]] ; then
+				# 589674
+				mycmakeargs+=( -DENABLE_ASSEMBLY=OFF )
+			fi
+			# disable altivec for 10bit build #607802#c5
+			if [[ ${ABI} = ppc* ]] ; then
+				mycmakeargs+=(
+					-DENABLE_ALTIVEC=OFF
+					-DCPU_POWER8=$(usex cpu_flags_ppc_vsx2 ON OFF)
+				)
+			fi
+			;;
+		"main")
+			if (( "${#MULTIBUILD_VARIANTS[@]}" > 1 )) ; then
+				local myvariants=( "${MULTIBUILD_VARIANTS[@]}" )
+				unset myvariants[${#MULTIBUILD_VARIANTS[@]}-1]
+				local liblist="" v=
+				for v in "${myvariants[@]}" ; do
+					ln -s "${BUILD_DIR%-*}-${v}/libx265.a" "libx265_${v}.a" ||	die
+					liblist+="libx265_${v}.a;"
+				done
+				mycmakeargs+=(
+					-DEXTRA_LIB="${liblist}"
+					-DEXTRA_LINK_FLAGS=-L.
+					-DLINKED_10BIT=$(usex 10bit)
+					-DLINKED_12BIT=$(usex 12bit)
+				)
+				if [[ ${ABI} = ppc* ]] ; then
+					# upstream uses mix of altivec + power8 vectors
+					# it's impossible to enable altivec without CPU_POWER8
+					# and it does not work on ppc32
+					# so we toggle both variables together
+					mycmakeargs+=(
+						-DCPU_POWER8=$(usex cpu_flags_ppc_vsx2 ON OFF)
+						-DENABLE_ALTIVEC=$(usex cpu_flags_ppc_vsx2 ON OFF)
+					)
+				fi
+			fi
+			;;
+		*)
+			die "Unknown variant: ${MULTIBUILD_VARIANT}";;
+	esac
+	cmake_src_configure
+	popd >/dev/null || die
+}
+
+multilib_src_configure() {
+	local myabicmakeargs=(
+		-DENABLE_TESTS=$(usex test ON OFF)
+		$(multilib_is_native_abi || echo "-DENABLE_CLI=OFF")
+		-DENABLE_PIC=ON
+		-DENABLE_LIBNUMA=$(usex numa ON OFF)
+		-DGIT_ARCHETYPE=1 #814116
+		-DLIB_INSTALL_DIR="$(get_libdir)"
+	)
+
+	if [[ ${ABI} = x86 ]] ; then
+		# Bug #528202
+		if use pic ; then
+			ewarn "PIC has been requested but x86 asm is not PIC-safe, disabling it."
+			myabicmakeargs+=( -DENABLE_ASSEMBLY=OFF )
+		fi
+	elif [[ ${ABI} = x32 ]] ; then
+		# bug #510890
+		myabicmakeargs+=( -DENABLE_ASSEMBLY=OFF )
+	elif [[ ${ABI} = arm ]] ; then
+		myabicmakeargs+=( -DENABLE_ASSEMBLY=$(usex pic OFF $(usex cpu_flags_arm_neon ON OFF)) )
+		use cpu_flags_arm_neon && use pic && ewarn "PIC has been requested but arm neon asm is not PIC-safe, disabling it."
+	fi
+
+	local MULTIBUILD_VARIANTS=( $(x265_get_variants) )
+	multibuild_foreach_variant x265_variant_src_configure
+}
+
+multilib_src_compile() {
+	local MULTIBUILD_VARIANTS=( $(x265_get_variants) )
+	multibuild_foreach_variant cmake_src_compile
+}
+
+x265_variant_src_test() {
+	if [ -x "${BUILD_DIR}/test/TestBench" ] ; then
+		"${BUILD_DIR}/test/TestBench" || die
+	else
+		einfo "Unit tests check only assembly."
+		einfo "You do not seem to have any for ABI=${ABI}, x265 variant=${MULTIBUILD_VARIANT}"
+		einfo "Skipping tests."
+	fi
+}
+
+multilib_src_test() {
+	local MULTIBUILD_VARIANTS=( $(x265_get_variants) )
+	multibuild_foreach_variant x265_variant_src_test
+}
+
+multilib_src_install() {
+	# Install only "main" variant since the others are already linked into it.
+	local MULTIBUILD_VARIANTS=( "main" )
+	multibuild_foreach_variant cmake_src_install
+}
+
+multilib_src_install_all() {
+	dodoc -r "${S}/../doc/"*
+
+	# we don't install *.a files for all variants,
+	# so just delete these files instead of pretending
+	# real USE=static-libs support
+	find "${ED}" -name "*.a" -delete || die
+}
diff --git a/media-libs/x265/x265-9999.ebuild b/media-libs/x265/x265-9999.ebuild
index e956de4eab01..3e0116c5da00 100644
--- a/media-libs/x265/x265-9999.ebuild
+++ b/media-libs/x265/x265-9999.ebuild
@@ -161,6 +161,7 @@ multilib_src_configure() {
 		$(multilib_is_native_abi || echo "-DENABLE_CLI=OFF")
 		-DENABLE_PIC=ON
 		-DENABLE_LIBNUMA=$(usex numa ON OFF)
+		-DGIT_ARCHETYPE=1 #814116
 		-DLIB_INSTALL_DIR="$(get_libdir)"
 	)