sys-libs/libcxx: Bump to 10.0.0rc3

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

2 files changed, 207 insertions, 0 deletions

diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index 732b68c7fa47..19031a3bc4e9 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -2,4 +2,5 @@ DIST libcxx-7.1.0.src.tar.xz 1638448 BLAKE2B eca192e03f839f4323e3c37beba2e6daaf9
 DIST libcxx-8.0.1.src.tar.xz 1739524 BLAKE2B 6e641cb6bda0de12c8408d3ab33f627389ac014aa65b3391c870aa96ffd347784e6b70b953bd1ee8eba56554e0f78a723ab77b9dba5f85e6219e2b95ca50c160 SHA512 75749d08b2b343c6f5f9aefb04be63e42f6d12efc51101d3647ed6f70c7a6d050afb3ab2f3636eae78cb523f5844de67b960a7a3145ed89ab0c7015deb14921e
 DIST llvmorg-10.0.0-rc1.tar.gz 120755822 BLAKE2B a729d37d96ba498cb865c6f708734dccb796b2caabb69167b9aa3b0e12c788f2a5980a048b99d5603da3d26af909fb31f406b4f4743cabae56c45f829a7bf695 SHA512 27137fc700971147c00ded6787eaae9f0bcf98c938fe227a5a559b38d983736f3d086f4ff6772d802c5f48a7d97a97c293261e4af88fcb5a720693b9cb5a4f02
 DIST llvmorg-10.0.0-rc2.tar.gz 120795019 BLAKE2B 6e701eddbd2313e777c7b37dff8455a08d3c599d01055b60afc0319373d4709deb429aac6bf9e80c4d2e2ab8ade03bf5b398b6ccd8882e4bde608d10cdbf2284 SHA512 ee571c9258a2d9fc411964f56b0b92b2e7134349ed21dbe7963eb61ef65da506e0c4f7c69259a3b6cecec23f55d24636608287ee4457ee667031e141f8f09aae
+DIST llvmorg-10.0.0-rc3.tar.gz 120814170 BLAKE2B 432fe0c1e74d3020a269a256e6e456cbfa0b7166dd3f86df6caf3a55e1931c022285fe8afdc4d8998c729c5471acf5308abb336782ddec2ef9b0f58d1ccb5a3c SHA512 aad1df86063612d20c48ea7046940330fe2ac572a146be22ff71d9e65fa3438184cb39a2533fc6afd1e74df26909a9f0d24ebcd7d62e74728cfd81e447f2ffbf
 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
new file mode 100644
index 000000000000..5a3729e82ad3
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-10.0.0_rc3.ebuild
@@ -0,0 +1,206 @@
+# 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."
+}