From: Michał Górny <mgorny@gentoo.org>
Date: Wed, 25 Mar 2020 17:47:35 +0000 (+0100)
Subject: sys-libs/libcxx: Remove 10.0.0 RCs
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=194d12efcdb77f735fb7420dd5d3cebbb837d88d;p=gentoo.git

sys-libs/libcxx: Remove 10.0.0 RCs

Signed-off-by: Michał Górny <mgorny@gentoo.org>
---

diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index c164192bfdca..29811dbb1af1 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -1,7 +1,4 @@
 DIST libcxx-7.1.0.src.tar.xz 1638448 BLAKE2B eca192e03f839f4323e3c37beba2e6daaf935d4e784e0bc835a4d2c3ce0790f5539bdca0466feafd668d7c6675b11b7fe14d9adb680c46fd7b28b42a3b423219 SHA512 925ce5093445f84dc17d5b1610e4297ef3606b254b7350c50f88ba042fcca62125ffd97d21cb612707d5e9511267634ca1779619199f95ce819e5f5c0c2b55d5
 DIST libcxx-8.0.1.src.tar.xz 1739524 BLAKE2B 6e641cb6bda0de12c8408d3ab33f627389ac014aa65b3391c870aa96ffd347784e6b70b953bd1ee8eba56554e0f78a723ab77b9dba5f85e6219e2b95ca50c160 SHA512 75749d08b2b343c6f5f9aefb04be63e42f6d12efc51101d3647ed6f70c7a6d050afb3ab2f3636eae78cb523f5844de67b960a7a3145ed89ab0c7015deb14921e
-DIST llvmorg-10.0.0-rc3.tar.gz 120814170 BLAKE2B 432fe0c1e74d3020a269a256e6e456cbfa0b7166dd3f86df6caf3a55e1931c022285fe8afdc4d8998c729c5471acf5308abb336782ddec2ef9b0f58d1ccb5a3c SHA512 aad1df86063612d20c48ea7046940330fe2ac572a146be22ff71d9e65fa3438184cb39a2533fc6afd1e74df26909a9f0d24ebcd7d62e74728cfd81e447f2ffbf
-DIST llvmorg-10.0.0-rc4.tar.gz 120816191 BLAKE2B 66c497fa682b9bcbdef3776f540e6b2781286df3405b00ab335aa405a19418d9c4571b301a6814b526e363bb9c0b7c0be0dfc85444fb9d636ecf11ee788b2cdd SHA512 b3df32cafbbe9147c7b5cfbfe96c7231dc2e66d32560c6d0bcda90d6863b37bf8c9cb3f080fb459acd1d56c013149b275d0ce58f1678205f8ca737f1c8d034cd
-DIST llvmorg-10.0.0-rc6.tar.gz 120815075 BLAKE2B 3c5eb3594d30f1d6c4e2fec916a209030c7e3d8ebcf0f7ceb376adc78cd8a5bdf94a7c85d821bd5ea65631cf0a2438c538019fe1d58d1f835f3b9a899207d0c4 SHA512 04d8df9cd14f78fc5f80885f5d2e8fe4a1f66a218079c2574f6f3f8f3a86c2a886763da08a9454465615d89da300022e9e0754ecd4b40e25fedc600c2e66f39b
 DIST llvmorg-10.0.0.tar.gz 120804856 BLAKE2B 6b0254f5b913398cdcf2b2ec1ff219888706d2b79d5296590934714e42ac79f6a6547941ac2b1d2c4e6313dd18b6c7068e748aa6ac033e49fccbf5d355aa8191 SHA512 baa182d62fef1851836013ae8a1a00861ea89769778d67fb97b407a9de664e6c85da2af9c5b3f75d2bf34ff6b00004e531ca7e4b3115a26c0e61c575cf2303a0
 DIST llvmorg-9.0.1.tar.gz 113193320 BLAKE2B b86e405f2b8e00436045fd409fe19cdde75c797b1192c62a22b5ec75e6b4dc8e874a0f33008dc31562445e4cbe53a992b6f48c684255a6a1ef261e595b8b161f SHA512 fa88beeaae94b6d0cd9b5ba38658d0ffed8004035d7d8a4f95c3d31a709b88b581ae9bd7761333c8e5375c44b8f6be01768b5a3be901163159d7e6c43b71da59
diff --git a/sys-libs/libcxx/libcxx-10.0.0_rc3.ebuild b/sys-libs/libcxx/libcxx-10.0.0_rc3.ebuild
deleted file mode 100644
index 24c015cc1bc5..000000000000
--- a/sys-libs/libcxx/libcxx-10.0.0_rc3.ebuild
+++ /dev/null
@@ -1,206 +0,0 @@
-# Copyright 1999-2020 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-PYTHON_COMPAT=( python3_{6,7} )
-inherit cmake-multilib llvm llvm.org multiprocessing python-any-r1 \
-	toolchain-funcs
-
-DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
-HOMEPAGE="https://libcxx.llvm.org/"
-LLVM_COMPONENTS=( libcxx )
-llvm.org_set_globals
-
-LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
-SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~x86"
-IUSE="elibc_glibc elibc_musl +libcxxabi +libunwind +static-libs test"
-REQUIRED_USE="libunwind? ( libcxxabi )"
-RESTRICT="!test? ( test )"
-
-RDEPEND="
-	libcxxabi? ( ~sys-libs/libcxxabi-${PV}[libunwind=,static-libs?,${MULTILIB_USEDEP}] )
-	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )"
-# llvm-6 for new lit options
-# clang-3.9.0 installs necessary target symlinks unconditionally
-# which removes the need for MULTILIB_USEDEP
-DEPEND="${RDEPEND}
-	>=sys-devel/llvm-6"
-BDEPEND="
-	test? ( >=sys-devel/clang-3.9.0
-		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') )"
-
-DOCS=( CREDITS.TXT )
-
-PATCHES=(
-	# Add link flag "-Wl,-z,defs" to avoid underlinking; this is needed in a
-	# out-of-tree build.
-	"${FILESDIR}/${PN}-3.9-cmake-link-flags.patch"
-)
-
-# least intrusive of all
-CMAKE_BUILD_TYPE=RelWithDebInfo
-
-python_check_deps() {
-	has_version "dev-python/lit[${PYTHON_USEDEP}]"
-}
-
-pkg_setup() {
-	llvm_pkg_setup
-	use test && python-any-r1_pkg_setup
-
-	if ! use libcxxabi && ! tc-is-gcc ; then
-		eerror "To build ${PN} against libsupc++, you have to use gcc. Other"
-		eerror "compilers are not supported. Please set CC=gcc and CXX=g++"
-		eerror "and try again."
-		die
-	fi
-	if tc-is-gcc && [[ $(gcc-version) < 4.7 ]] ; then
-		eerror "${PN} needs to be built with gcc-4.7 or later (or other"
-		eerror "conformant compilers). Please use gcc-config to switch to"
-		eerror "gcc-4.7 or later version."
-		die
-	fi
-}
-
-test_compiler() {
-	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
-		<<<'int main() { return 0; }' &>/dev/null
-}
-
-src_configure() {
-	# note: we need to do this before multilib kicks in since it will
-	# alter the CHOST
-	local cxxabi cxxabi_incs
-	if use libcxxabi; then
-		cxxabi=libcxxabi
-		cxxabi_incs="${EPREFIX}/usr/include/libcxxabi"
-	else
-		local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)"
-		cxxabi=libsupc++
-		cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}"
-	fi
-
-	multilib-minimal_src_configure
-}
-
-multilib_src_configure() {
-	# we want -lgcc_s for unwinder, and for compiler runtime when using
-	# gcc, clang with gcc runtime (or any unknown compiler)
-	local extra_libs=() want_gcc_s=ON want_compiler_rt=OFF
-	if use libunwind; then
-		# work-around missing -lunwind upstream
-		extra_libs+=( -lunwind )
-		# if we're using libunwind and clang with compiler-rt, we want
-		# to link to compiler-rt instead of -lgcc_s
-		if tc-is-clang; then
-			local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
-			   ${LDFLAGS} -print-libgcc-file-name)
-			if [[ ${compiler_rt} == *libclang_rt* ]]; then
-				want_gcc_s=OFF
-				want_compiler_rt=ON
-				extra_libs+=( "${compiler_rt}" )
-			fi
-		fi
-	fi
-
-	# bootstrap: cmake is unhappy if compiler can't link to stdlib
-	local nolib_flags=( -nodefaultlibs -lc )
-	if ! test_compiler; then
-		if test_compiler "${nolib_flags[@]}"; then
-			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
-			ewarn "${CXX} seems to lack runtime, trying with ${nolib_flags[*]}"
-		fi
-	fi
-
-	local libdir=$(get_libdir)
-	local mycmakeargs=(
-		-DLIBCXX_LIBDIR_SUFFIX=${libdir#lib}
-		-DLIBCXX_ENABLE_SHARED=ON
-		-DLIBCXX_ENABLE_STATIC=$(usex static-libs)
-		-DLIBCXX_CXX_ABI=${cxxabi}
-		-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs}
-		# we're using our own mechanism for generating linker scripts
-		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
-		-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
-		-DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s}
-		-DLIBCXX_INCLUDE_TESTS=$(usex test)
-		-DLIBCXX_USE_COMPILER_RT=${want_compiler_rt}
-		-DCMAKE_SHARED_LINKER_FLAGS="${extra_libs[*]} ${LDFLAGS}"
-	)
-
-	if use test; then
-		local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
-		local jobs=${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}
-
-		[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
-
-		mycmakeargs+=(
-			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
-			-DLLVM_LIT_ARGS="-vv;-j;${jobs};--param=cxx_under_test=${clang_path}"
-		)
-	fi
-	cmake-utils_src_configure
-}
-
-multilib_src_test() {
-	local -x LIT_PRESERVES_TMP=1
-	cmake-utils_src_make check-libcxx
-}
-
-# Usage: deps
-gen_ldscript() {
-	local output_format
-	output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
-	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
-
-	cat <<-END_LDSCRIPT
-/* GNU ld script
-   Include missing dependencies
-*/
-${output_format}
-GROUP ( $@ )
-END_LDSCRIPT
-}
-
-gen_static_ldscript() {
-	local libdir=$(get_libdir)
-	local cxxabi_lib=$(usex libcxxabi "libc++abi.a" "libsupc++.a")
-
-	# Move it first.
-	mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/libc++_static.a" || die
-	# Generate libc++.a ldscript for inclusion of its dependencies so that
-	# clang++ -stdlib=libc++ -static works out of the box.
-	local deps="libc++_static.a ${cxxabi_lib} $(usex libunwind libunwind.a libgcc_eh.a)"
-	# On Linux/glibc it does not link without libpthread or libdl. It is
-	# fine on FreeBSD.
-	use elibc_glibc && deps+=" libpthread.a libdl.a"
-
-	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die
-}
-
-gen_shared_ldscript() {
-	local libdir=$(get_libdir)
-	# libsupc++ doesn't have a shared version
-	local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "libsupc++.a")
-
-	mv "${ED}/usr/${libdir}/libc++.so" "${ED}/usr/${libdir}/libc++_shared.so" || die
-	local deps="libc++_shared.so ${cxxabi_lib} $(usex libunwind libunwind.so libgcc_s.so)"
-
-	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die
-}
-
-multilib_src_install() {
-	cmake-utils_src_install
-	gen_shared_ldscript
-	use static-libs && gen_static_ldscript
-}
-
-pkg_postinst() {
-	elog "This package (${PN}) is mainly intended as a replacement for the C++"
-	elog "standard library when using clang."
-	elog "To use it, instead of libstdc++, use:"
-	elog "    clang++ -stdlib=libc++"
-	elog "to compile your C++ programs."
-}
diff --git a/sys-libs/libcxx/libcxx-10.0.0_rc4.ebuild b/sys-libs/libcxx/libcxx-10.0.0_rc4.ebuild
deleted file mode 100644
index 24c015cc1bc5..000000000000
--- a/sys-libs/libcxx/libcxx-10.0.0_rc4.ebuild
+++ /dev/null
@@ -1,206 +0,0 @@
-# Copyright 1999-2020 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-PYTHON_COMPAT=( python3_{6,7} )
-inherit cmake-multilib llvm llvm.org multiprocessing python-any-r1 \
-	toolchain-funcs
-
-DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
-HOMEPAGE="https://libcxx.llvm.org/"
-LLVM_COMPONENTS=( libcxx )
-llvm.org_set_globals
-
-LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
-SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~x86"
-IUSE="elibc_glibc elibc_musl +libcxxabi +libunwind +static-libs test"
-REQUIRED_USE="libunwind? ( libcxxabi )"
-RESTRICT="!test? ( test )"
-
-RDEPEND="
-	libcxxabi? ( ~sys-libs/libcxxabi-${PV}[libunwind=,static-libs?,${MULTILIB_USEDEP}] )
-	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )"
-# llvm-6 for new lit options
-# clang-3.9.0 installs necessary target symlinks unconditionally
-# which removes the need for MULTILIB_USEDEP
-DEPEND="${RDEPEND}
-	>=sys-devel/llvm-6"
-BDEPEND="
-	test? ( >=sys-devel/clang-3.9.0
-		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') )"
-
-DOCS=( CREDITS.TXT )
-
-PATCHES=(
-	# Add link flag "-Wl,-z,defs" to avoid underlinking; this is needed in a
-	# out-of-tree build.
-	"${FILESDIR}/${PN}-3.9-cmake-link-flags.patch"
-)
-
-# least intrusive of all
-CMAKE_BUILD_TYPE=RelWithDebInfo
-
-python_check_deps() {
-	has_version "dev-python/lit[${PYTHON_USEDEP}]"
-}
-
-pkg_setup() {
-	llvm_pkg_setup
-	use test && python-any-r1_pkg_setup
-
-	if ! use libcxxabi && ! tc-is-gcc ; then
-		eerror "To build ${PN} against libsupc++, you have to use gcc. Other"
-		eerror "compilers are not supported. Please set CC=gcc and CXX=g++"
-		eerror "and try again."
-		die
-	fi
-	if tc-is-gcc && [[ $(gcc-version) < 4.7 ]] ; then
-		eerror "${PN} needs to be built with gcc-4.7 or later (or other"
-		eerror "conformant compilers). Please use gcc-config to switch to"
-		eerror "gcc-4.7 or later version."
-		die
-	fi
-}
-
-test_compiler() {
-	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
-		<<<'int main() { return 0; }' &>/dev/null
-}
-
-src_configure() {
-	# note: we need to do this before multilib kicks in since it will
-	# alter the CHOST
-	local cxxabi cxxabi_incs
-	if use libcxxabi; then
-		cxxabi=libcxxabi
-		cxxabi_incs="${EPREFIX}/usr/include/libcxxabi"
-	else
-		local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)"
-		cxxabi=libsupc++
-		cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}"
-	fi
-
-	multilib-minimal_src_configure
-}
-
-multilib_src_configure() {
-	# we want -lgcc_s for unwinder, and for compiler runtime when using
-	# gcc, clang with gcc runtime (or any unknown compiler)
-	local extra_libs=() want_gcc_s=ON want_compiler_rt=OFF
-	if use libunwind; then
-		# work-around missing -lunwind upstream
-		extra_libs+=( -lunwind )
-		# if we're using libunwind and clang with compiler-rt, we want
-		# to link to compiler-rt instead of -lgcc_s
-		if tc-is-clang; then
-			local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
-			   ${LDFLAGS} -print-libgcc-file-name)
-			if [[ ${compiler_rt} == *libclang_rt* ]]; then
-				want_gcc_s=OFF
-				want_compiler_rt=ON
-				extra_libs+=( "${compiler_rt}" )
-			fi
-		fi
-	fi
-
-	# bootstrap: cmake is unhappy if compiler can't link to stdlib
-	local nolib_flags=( -nodefaultlibs -lc )
-	if ! test_compiler; then
-		if test_compiler "${nolib_flags[@]}"; then
-			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
-			ewarn "${CXX} seems to lack runtime, trying with ${nolib_flags[*]}"
-		fi
-	fi
-
-	local libdir=$(get_libdir)
-	local mycmakeargs=(
-		-DLIBCXX_LIBDIR_SUFFIX=${libdir#lib}
-		-DLIBCXX_ENABLE_SHARED=ON
-		-DLIBCXX_ENABLE_STATIC=$(usex static-libs)
-		-DLIBCXX_CXX_ABI=${cxxabi}
-		-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs}
-		# we're using our own mechanism for generating linker scripts
-		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
-		-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
-		-DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s}
-		-DLIBCXX_INCLUDE_TESTS=$(usex test)
-		-DLIBCXX_USE_COMPILER_RT=${want_compiler_rt}
-		-DCMAKE_SHARED_LINKER_FLAGS="${extra_libs[*]} ${LDFLAGS}"
-	)
-
-	if use test; then
-		local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
-		local jobs=${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}
-
-		[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
-
-		mycmakeargs+=(
-			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
-			-DLLVM_LIT_ARGS="-vv;-j;${jobs};--param=cxx_under_test=${clang_path}"
-		)
-	fi
-	cmake-utils_src_configure
-}
-
-multilib_src_test() {
-	local -x LIT_PRESERVES_TMP=1
-	cmake-utils_src_make check-libcxx
-}
-
-# Usage: deps
-gen_ldscript() {
-	local output_format
-	output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
-	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
-
-	cat <<-END_LDSCRIPT
-/* GNU ld script
-   Include missing dependencies
-*/
-${output_format}
-GROUP ( $@ )
-END_LDSCRIPT
-}
-
-gen_static_ldscript() {
-	local libdir=$(get_libdir)
-	local cxxabi_lib=$(usex libcxxabi "libc++abi.a" "libsupc++.a")
-
-	# Move it first.
-	mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/libc++_static.a" || die
-	# Generate libc++.a ldscript for inclusion of its dependencies so that
-	# clang++ -stdlib=libc++ -static works out of the box.
-	local deps="libc++_static.a ${cxxabi_lib} $(usex libunwind libunwind.a libgcc_eh.a)"
-	# On Linux/glibc it does not link without libpthread or libdl. It is
-	# fine on FreeBSD.
-	use elibc_glibc && deps+=" libpthread.a libdl.a"
-
-	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die
-}
-
-gen_shared_ldscript() {
-	local libdir=$(get_libdir)
-	# libsupc++ doesn't have a shared version
-	local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "libsupc++.a")
-
-	mv "${ED}/usr/${libdir}/libc++.so" "${ED}/usr/${libdir}/libc++_shared.so" || die
-	local deps="libc++_shared.so ${cxxabi_lib} $(usex libunwind libunwind.so libgcc_s.so)"
-
-	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die
-}
-
-multilib_src_install() {
-	cmake-utils_src_install
-	gen_shared_ldscript
-	use static-libs && gen_static_ldscript
-}
-
-pkg_postinst() {
-	elog "This package (${PN}) is mainly intended as a replacement for the C++"
-	elog "standard library when using clang."
-	elog "To use it, instead of libstdc++, use:"
-	elog "    clang++ -stdlib=libc++"
-	elog "to compile your C++ programs."
-}
diff --git a/sys-libs/libcxx/libcxx-10.0.0_rc6.ebuild b/sys-libs/libcxx/libcxx-10.0.0_rc6.ebuild
deleted file mode 100644
index 5a3729e82ad3..000000000000
--- a/sys-libs/libcxx/libcxx-10.0.0_rc6.ebuild
+++ /dev/null
@@ -1,206 +0,0 @@
-# Copyright 1999-2020 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-PYTHON_COMPAT=( python3_{6,7} )
-inherit cmake-multilib llvm llvm.org multiprocessing python-any-r1 \
-	toolchain-funcs
-
-DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
-HOMEPAGE="https://libcxx.llvm.org/"
-LLVM_COMPONENTS=( libcxx )
-llvm.org_set_globals
-
-LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
-SLOT="0"
-KEYWORDS=""
-IUSE="elibc_glibc elibc_musl +libcxxabi +libunwind +static-libs test"
-REQUIRED_USE="libunwind? ( libcxxabi )"
-RESTRICT="!test? ( test )"
-
-RDEPEND="
-	libcxxabi? ( ~sys-libs/libcxxabi-${PV}[libunwind=,static-libs?,${MULTILIB_USEDEP}] )
-	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )"
-# llvm-6 for new lit options
-# clang-3.9.0 installs necessary target symlinks unconditionally
-# which removes the need for MULTILIB_USEDEP
-DEPEND="${RDEPEND}
-	>=sys-devel/llvm-6"
-BDEPEND="
-	test? ( >=sys-devel/clang-3.9.0
-		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') )"
-
-DOCS=( CREDITS.TXT )
-
-PATCHES=(
-	# Add link flag "-Wl,-z,defs" to avoid underlinking; this is needed in a
-	# out-of-tree build.
-	"${FILESDIR}/${PN}-3.9-cmake-link-flags.patch"
-)
-
-# least intrusive of all
-CMAKE_BUILD_TYPE=RelWithDebInfo
-
-python_check_deps() {
-	has_version "dev-python/lit[${PYTHON_USEDEP}]"
-}
-
-pkg_setup() {
-	llvm_pkg_setup
-	use test && python-any-r1_pkg_setup
-
-	if ! use libcxxabi && ! tc-is-gcc ; then
-		eerror "To build ${PN} against libsupc++, you have to use gcc. Other"
-		eerror "compilers are not supported. Please set CC=gcc and CXX=g++"
-		eerror "and try again."
-		die
-	fi
-	if tc-is-gcc && [[ $(gcc-version) < 4.7 ]] ; then
-		eerror "${PN} needs to be built with gcc-4.7 or later (or other"
-		eerror "conformant compilers). Please use gcc-config to switch to"
-		eerror "gcc-4.7 or later version."
-		die
-	fi
-}
-
-test_compiler() {
-	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
-		<<<'int main() { return 0; }' &>/dev/null
-}
-
-src_configure() {
-	# note: we need to do this before multilib kicks in since it will
-	# alter the CHOST
-	local cxxabi cxxabi_incs
-	if use libcxxabi; then
-		cxxabi=libcxxabi
-		cxxabi_incs="${EPREFIX}/usr/include/libcxxabi"
-	else
-		local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)"
-		cxxabi=libsupc++
-		cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}"
-	fi
-
-	multilib-minimal_src_configure
-}
-
-multilib_src_configure() {
-	# we want -lgcc_s for unwinder, and for compiler runtime when using
-	# gcc, clang with gcc runtime (or any unknown compiler)
-	local extra_libs=() want_gcc_s=ON want_compiler_rt=OFF
-	if use libunwind; then
-		# work-around missing -lunwind upstream
-		extra_libs+=( -lunwind )
-		# if we're using libunwind and clang with compiler-rt, we want
-		# to link to compiler-rt instead of -lgcc_s
-		if tc-is-clang; then
-			local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
-			   ${LDFLAGS} -print-libgcc-file-name)
-			if [[ ${compiler_rt} == *libclang_rt* ]]; then
-				want_gcc_s=OFF
-				want_compiler_rt=ON
-				extra_libs+=( "${compiler_rt}" )
-			fi
-		fi
-	fi
-
-	# bootstrap: cmake is unhappy if compiler can't link to stdlib
-	local nolib_flags=( -nodefaultlibs -lc )
-	if ! test_compiler; then
-		if test_compiler "${nolib_flags[@]}"; then
-			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
-			ewarn "${CXX} seems to lack runtime, trying with ${nolib_flags[*]}"
-		fi
-	fi
-
-	local libdir=$(get_libdir)
-	local mycmakeargs=(
-		-DLIBCXX_LIBDIR_SUFFIX=${libdir#lib}
-		-DLIBCXX_ENABLE_SHARED=ON
-		-DLIBCXX_ENABLE_STATIC=$(usex static-libs)
-		-DLIBCXX_CXX_ABI=${cxxabi}
-		-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs}
-		# we're using our own mechanism for generating linker scripts
-		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
-		-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
-		-DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s}
-		-DLIBCXX_INCLUDE_TESTS=$(usex test)
-		-DLIBCXX_USE_COMPILER_RT=${want_compiler_rt}
-		-DCMAKE_SHARED_LINKER_FLAGS="${extra_libs[*]} ${LDFLAGS}"
-	)
-
-	if use test; then
-		local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
-		local jobs=${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}
-
-		[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
-
-		mycmakeargs+=(
-			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
-			-DLLVM_LIT_ARGS="-vv;-j;${jobs};--param=cxx_under_test=${clang_path}"
-		)
-	fi
-	cmake-utils_src_configure
-}
-
-multilib_src_test() {
-	local -x LIT_PRESERVES_TMP=1
-	cmake-utils_src_make check-libcxx
-}
-
-# Usage: deps
-gen_ldscript() {
-	local output_format
-	output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
-	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
-
-	cat <<-END_LDSCRIPT
-/* GNU ld script
-   Include missing dependencies
-*/
-${output_format}
-GROUP ( $@ )
-END_LDSCRIPT
-}
-
-gen_static_ldscript() {
-	local libdir=$(get_libdir)
-	local cxxabi_lib=$(usex libcxxabi "libc++abi.a" "libsupc++.a")
-
-	# Move it first.
-	mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/libc++_static.a" || die
-	# Generate libc++.a ldscript for inclusion of its dependencies so that
-	# clang++ -stdlib=libc++ -static works out of the box.
-	local deps="libc++_static.a ${cxxabi_lib} $(usex libunwind libunwind.a libgcc_eh.a)"
-	# On Linux/glibc it does not link without libpthread or libdl. It is
-	# fine on FreeBSD.
-	use elibc_glibc && deps+=" libpthread.a libdl.a"
-
-	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die
-}
-
-gen_shared_ldscript() {
-	local libdir=$(get_libdir)
-	# libsupc++ doesn't have a shared version
-	local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "libsupc++.a")
-
-	mv "${ED}/usr/${libdir}/libc++.so" "${ED}/usr/${libdir}/libc++_shared.so" || die
-	local deps="libc++_shared.so ${cxxabi_lib} $(usex libunwind libunwind.so libgcc_s.so)"
-
-	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die
-}
-
-multilib_src_install() {
-	cmake-utils_src_install
-	gen_shared_ldscript
-	use static-libs && gen_static_ldscript
-}
-
-pkg_postinst() {
-	elog "This package (${PN}) is mainly intended as a replacement for the C++"
-	elog "standard library when using clang."
-	elog "To use it, instead of libstdc++, use:"
-	elog "    clang++ -stdlib=libc++"
-	elog "to compile your C++ programs."
-}