2 files changed, 213 insertions, 0 deletions
diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index 25051cec003a..140807f856db 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -8,6 +8,8 @@ DIST llvm-project-17.0.6.src.tar.xz 127838860 BLAKE2B d6ede1a9fda8756995c3e06541
 DIST llvm-project-17.0.6.src.tar.xz.sig 438 BLAKE2B 186e75b6a0fbfe1e85408589c149e1800fcc47d685b74e4260018e05cd08bc793d1d1197c9c50e177eea941a3d0c65cb0c583ce6dae449099b920adf8a508ef7 SHA512 f78c55053a6450625f3e95f52c305110b4468a9854fec75831b65b8d6ceee3c9206ab9e63c4b5fda8be9bd344f72cfbdaae0520ed240abd505e08ebeaa25d340
 DIST llvm-project-18.1.7.src.tar.xz 132063384 BLAKE2B b8c37bd131fb5f3131bfab4fbad7aa811079ca10723faa14779253bc62b1ee08d4e04650e1da883297ed88a62d518b868a1f13cf57d03233254fd01209da5c02 SHA512 0f67818267803aca9d2bc9eb89335ee6dc56269e8066a0f8a48c4a959e8805dbf6bc839b9f96a92f86ee50d72e7cc326ffe18febb5eb06751ab54a217c0221c8
 DIST llvm-project-18.1.7.src.tar.xz.sig 566 BLAKE2B 9ae6d80eba5309ce3d5cba580df57c28dbcf429266b2ced622465e34ab2a7ae0f100d1e89c73a44abccd95a3367979344450fd53fb6a2baa029b929d3f13eee3 SHA512 7e5601e35f4fcaa4ed042638ae5a4fb90714c9dce58aa3f98e965568660b88294185621a4eb5547de262dca8a96f620db3f94932bb1776661e345dbe1266315c
+DIST llvm-project-18.1.8.src.tar.xz 132067260 BLAKE2B a950492f1dbfb874dff63b1ffef86468169ba2f211a9733ec2d4cf30040f7f277ef00f048bb44dee9f97d7d762f0f241f19e5a2a7b0b49217d3821ddfc8c354f SHA512 25eeee9984c8b4d0fbc240df90f33cbb000d3b0414baff5c8982beafcc5e59e7ef18f6f85d95b3a5f60cb3d4cd4f877c80487b5768bc21bc833f107698ad93db
+DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b85774b2edd5d88fdf29f23b88eb0b5130a7a7f0e80549612b025f927e92de4a08ff7c292cff224dbda91a5d598244e98f7ad0fbd SHA512 ddfd1e8a06756759af6cbe488c82a6d6a62ba91f3e8a0eb4cece561321824f5d165b08ed91010588790b76e19790931d2651b24dba8567e3b151d3cb43bec25b
 DIST llvm-project-3ae6755719c6dfc07761b4e9bdac8c86bcb41734.tar.gz 213487323 BLAKE2B 12030750fca0e7db4ae07a608874877151b2393cf58388f067b469e913ce9ac3f264440ebb3df5ea33f9f97cb87928fa746c98ba26c8d296f9e26dcbf950afc2 SHA512 951b70eafc8aea5b1f7847002229d89df565ca8180deef08b25966dcf070a7603a258e5fc24f9496251d23d275040724ed5e9499432ba3e19f5984f6f1c3c645
 DIST llvm-project-5aabbf0602c48b67bb89fd37f95bf97c95ded488.tar.gz 212582616 BLAKE2B 78522148bb4993bd26b16f1e3f44c2baf617705667c7fb104edc844c4330017166c783adae2f0215ca7463c05d1eef30fdf02b13241a9497aaede36bb8580a26 SHA512 104e0b5b4f34102f2da03cd54fe9bf5f7fb6efb3a9745d8ec85caa5f92189fde4a5c02c327243d87ff5c7d24b3790fcabdf0ef7144e79e15765785ca72dd3841
 DIST llvm-project-cddb9ce04e68d876de895d39d60b6af34d569012.tar.gz 213219536 BLAKE2B 5aba2c1dd19d73a8691590873f1697fa32adeab7f84d1d5636e211071e64bfa5d28a49ea9cfdba5fbae77c9520c2103a9f1544d669c7948a318636557f45f6ee SHA512 69ed25a0565c61cd4eb512e95b0fd2d2a3a09dbad73e7186d7fb1764193b06e522572eafb271d21469a4bfb133a62efe65e5ccd20cf05af8b43c52e195d477a9
@@ -15,6 +17,7 @@ EBUILD libcxx-15.0.7-r1.ebuild 5283 BLAKE2B 4380fc5b851054a5ec226ee4c92a2b79511d
 EBUILD libcxx-16.0.6.ebuild 5300 BLAKE2B 4714e22ad2fdcb07c62ead4cfa47fb4734e45dc055700b63a0f24cd6e93dde960c638fa16f55f4c04c6130fc2a7fa5729814c4aee12e9953f603ea5ccb706cc1 SHA512 3eab779107b5c737d971abe29b7bd9f44a73570957bd7d54d6aaa98ec78a6045d7d69272d611f7f09c60e1aa30bbad46b4bd1358b0b2c69e5bc686ab21444857
 EBUILD libcxx-17.0.6.ebuild 5280 BLAKE2B a882313471af07942a0772efa642800ba85545227f7dfe281cd7fcdc686ecda82692d273550b28cca2de47b1b9fda87717c98c52ffafdf1155d5269a3733f48a SHA512 d9a2932d7b9e26dea0e62dfd3aeac08ad0206a242d3d42d83e55b93cc767195a67bc0eb3da38cb8d51930175f94bac6496184d6d4be516014e0208c3f852d427
 EBUILD libcxx-18.1.7.ebuild 5447 BLAKE2B 262f4dd0ccb046dcdf7f6970350381a9a48530f7db546f1b6cef5493b5e2a657a403bb0b5fda0d2d100420c6f8f1bac82f635efa8ad6c70d4476ad101c35eb13 SHA512 74ddb2227a2c8cd3d106861dc8155720f757011933835a36b8a5c133de68db80c14d93ad0cd8c3fa62232ce1e0871889b6db15c4bd53d2c1ea34762d93addc0c
+EBUILD libcxx-18.1.8.ebuild 5447 BLAKE2B 262f4dd0ccb046dcdf7f6970350381a9a48530f7db546f1b6cef5493b5e2a657a403bb0b5fda0d2d100420c6f8f1bac82f635efa8ad6c70d4476ad101c35eb13 SHA512 74ddb2227a2c8cd3d106861dc8155720f757011933835a36b8a5c133de68db80c14d93ad0cd8c3fa62232ce1e0871889b6db15c4bd53d2c1ea34762d93addc0c
 EBUILD libcxx-19.0.0.9999.ebuild 5101 BLAKE2B 4fb27fae1b4b3230de9b645416cba17ceb584260faf4c640d743b482cf333116ee00138ce206a62fbdb2811cd6e59dba2d8463949a17545a74f50837c274f355 SHA512 b88b738fad3d0f2aba6736ef9361250165a25a9f6011c8a8f61f035475d84f7bc8d9f3da95ab549d3eebeee338301dd734eed3c85365015134765ef003daa341
 EBUILD libcxx-19.0.0_pre20240608.ebuild 5397 BLAKE2B 21d3fc915eaa8b5f3d9821b527aeaf79a70e1037e556e7cf39c8dc8c8df6bd6e115510c0a89436edcd9a7aefacc698f7043abeb330402a60f591af68c8fb0a33 SHA512 4b5467000c57558e191d26ba94aad76b56b1d502a552727e148a82859977f47471d16a19dbdd1327cf915c8151339dac9af96d0d06d8e0ab0c021717ecb931ea
 EBUILD libcxx-19.0.0_pre20240615.ebuild 5360 BLAKE2B ef6ea8f9d98420da812497805b6f953b509111ed65dacdca09f5c60ab11b617c4570e4ed8dba7ec3f1bd4bbc8a5193c2e6e7f9f4e83ad4f22fd590af36ac1fcc SHA512 044bace747db1ee968841521b56ae10e7d77d065bfdcbc0d8f4af018a99cdfc8e997d68de83c5ce9086011c271b4ae00f8bf65dccfe1480fba86803df3a3c786
diff --git a/sys-libs/libcxx/libcxx-18.1.8.ebuild b/sys-libs/libcxx/libcxx-18.1.8.ebuild
new file mode 100644
index 000000000000..a6fca47e6c29
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-18.1.8.ebuild
@@ -0,0 +1,210 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit cmake-multilib flag-o-matic llvm.org llvm-utils python-any-r1
+inherit 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="~amd64 ~arm ~arm64 ~loong ~riscv ~sparc ~x86 ~arm64-macos ~x64-macos"
+IUSE="+clang +libcxxabi +static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	libcxxabi? (
+		~sys-libs/libcxxabi-${PV}[static-libs?,${MULTILIB_USEDEP}]
+	)
+	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )
+"
+DEPEND="
+	${RDEPEND}
+	sys-devel/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		dev-debug/gdb[python]
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( runtimes libcxx{,abi} llvm/{cmake,utils/llvm-lit} cmake )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	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
+}
+
+src_prepare() {
+	# hanging tests
+	# https://github.com/llvm/llvm-project/issues/73791
+	rm ../libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/fetch_* || die
+	rm ../libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/operator.*_equals* || die
+
+	cmake_src_prepare
+}
+
+test_compiler() {
+	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	# note: we need to do this before multilib kicks in since it will
+	# alter the CHOST
+	local cxxabi cxxabi_incs
+	if use libcxxabi; then
+		cxxabi=system-libcxxabi
+		cxxabi_incs="${EPREFIX}/usr/include/c++/v1"
+	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}/${CHOST}"
+	fi
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	# link to compiler-rt
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	# bootstrap: cmake is unhappy if compiler can't link to stdlib
+	local nolib_flags=( -nodefaultlibs -lc )
+	if ! test_compiler; then
+		if test_compiler "${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=(
+		-DCMAKE_CXX_COMPILER_TARGET="${CHOST}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES=libcxx
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLLVM_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=$(usex elibc_musl)
+		-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		-DLIBCXX_INCLUDE_TESTS=$(usex test)
+		-DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
+		# this is broken with standalone builds, and also meaningless
+		-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+	)
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_compile() {
+	cmake_src_compile
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		gen_shared_ldscript
+		use static-libs && gen_static_ldscript
+	fi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-cxx
+}
+
+multilib_src_install() {
+	cmake_src_install
+	# since we've replaced libc++.{a,so} with ldscripts, now we have to
+	# install the extra symlinks
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		dolib.so lib/libc++_shared.so
+		use static-libs && dolib.a lib/libc++_static.a
+	fi
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(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() {
+	# Move it first.
+	mv lib/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
+		$(usex libcxxabi libc++abi.a libsupc++.a)
+	)
+	# On Linux/glibc it does not link without libpthread or libdl. It is
+	# fine on FreeBSD.
+	use elibc_glibc && deps+=( libpthread.a libdl.a )
+
+	gen_ldscript "${deps[*]}" > lib/libc++.a || die
+}
+
+gen_shared_ldscript() {
+	# Move it first.
+	mv lib/libc++{,_shared}.so || die
+	local deps=(
+		libc++_shared.so
+		# libsupc++ doesn't have a shared version
+		$(usex libcxxabi libc++abi.so libsupc++.a)
+	)
+
+	gen_ldscript "${deps[*]}" > lib/libc++.so || die
+}