sys-libs/libcxx: Bump to 12.0.1rc1

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

2 files changed, 212 insertions, 0 deletions

diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index eb60851a3a81..1fd327bcd7b4 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -5,3 +5,4 @@ DIST llvm-gentoo-patchset-9999-1.tar.xz 4032 BLAKE2B b9413484dafed8ae0c68c2c164b
 DIST llvmorg-10.0.1.tar.gz 120880730 BLAKE2B 30f19f56c4d1f6abcda5fec76256219d1e3c8a6ff1a1f152f94bfe362c07884339fe571ff7fe903ed3b3deb150b2fa868c387887a0dea2930dc08b81db71a5b1 SHA512 48078fff9293a87f1a973f3348f79506f04c3da774295f5eb67d74dd2d1aa94f0973f8ced3f4ab9e8339902071f82c603b43d5608ad7227046c4da769c5d2151
 DIST llvmorg-11.1.0.tar.gz 122776532 BLAKE2B ca842ff4afff8f44c82b5e7383962a9c45ca1c93b64fa4c6ebcd70a1d3849dbad2b8e4e24fba02d144c6266d7fab3607ebc6999b28c229cb35256cf40f26a985 SHA512 9a8ce022a935eed42fa71a224f2a207122aadcbef58ee855fdb4825f879e7d028e4dcff22c19b9d336db1c8bf63fb84372d44981acf84615f757e54306c92b81
 DIST llvmorg-12.0.0.tar.gz 134226215 BLAKE2B f9c3ba8c58571855caa4f206fd285c9b5be66672fb0814cb8bc0964a051f57f5d35013aa1e27cbda502652b37df1ec23474129109e76a42066847860db441dbe SHA512 0cff02155c5ac0d6db2b72d60d9819d5b5dd859663b45f721b1c7540239c2fceb1f57d9173f6870c49de851c242ed8e85c5c6d6577a1f8092a7c5dcd12513b26
+DIST llvmorg-12.0.1-rc1.tar.gz 134261735 BLAKE2B d29510495641c06e6d7a5ac165e6d34e0ba15d1a5b786534e186e341e3a0550cdd3d8a2b61deb3e2bf44c0b0ff8561224bf7f8cebc2ce9415639cb67ceae289e SHA512 4595a26df56eed7d5941240fe92116ad2f1c61639f0f464697c2c530a601347032fbad6802d1fa915ced8574c7b30ef05bc8c0be737784c844d3860892817e6e
diff --git a/sys-libs/libcxx/libcxx-12.0.1_rc1.ebuild b/sys-libs/libcxx/libcxx-12.0.1_rc1.ebuild
new file mode 100644
index 000000000000..1f529867fb7b
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-12.0.1_rc1.ebuild
@@ -0,0 +1,211 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_ECLASS=cmake
+PYTHON_COMPAT=( python3_{7..9} )
+inherit cmake-multilib llvm llvm.org python-any-r1 toolchain-funcs
+
+DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
+HOMEPAGE="https://libcxx.llvm.org/"
+
+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? (
+		>=dev-util/cmake-3.16
+		>=sys-devel/clang-3.9.0
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)"
+
+DOCS=( CREDITS.TXT )
+
+LLVM_COMPONENTS=( libcxx{,abi} llvm/{cmake/modules,utils/llvm-lit} )
+LLVM_PATCHSET=9999-1
+llvm.org_set_globals
+
+python_check_deps() {
+	has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	# Darwin Prefix builds do not have llvm installed yet, so rely on
+	# bootstrap-prefix to set the appropriate path vars to LLVM instead
+	# of using llvm_pkg_setup.
+	if [[ ${CHOST} != *-darwin* ]] || has_version dev-lang/llvm; then
+		llvm_pkg_setup
+	fi
+	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
+}
+
+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
+	elif [[ ${CHOST} == *-darwin* ]] && tc-is-clang; then
+		# clang-based darwin prefix disables libunwind useflag during
+		# bootstrap, because libunwind is not in the prefix yet.
+		# override the default, though, because clang based libcxx
+		# should never use gcc_s on Darwin.
+		want_gcc_s=OFF
+		# compiler_rt is not available in EPREFIX during bootstrap,
+		# so we cannot link to it yet anyway, so keep the defaults
+		# of want_compiler_rt=OFF and extra_libs=()
+	fi
+
+	# bootstrap: cmake is unhappy if compiler can't link to stdlib
+	local nolib_flags=( -nodefaultlibs -lc )
+	if ! test_compiler; then
+		if test_compiler "${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)
+		[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
+
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags);--param=cxx_under_test=${clang_path}"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-cxx
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(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_src_install
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		gen_shared_ldscript
+		use static-libs && gen_static_ldscript
+	fi
+}
+
+pkg_postinst() {
+	elog "This package (${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."
+}