sys-libs/libcxx: Bump to 17.0.0_rc4

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

2 files changed, 206 insertions, 0 deletions

diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index 9b38c470e407..4c74d743587e 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -9,5 +9,7 @@ DIST llvm-project-16.0.6.src.tar.xz 118013488 BLAKE2B 95192d39cbd2914e5609db3659
 DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43dfd4b921649298b10c3d19da308374c1e49869174294e29943c2af459fe06428264e26881d6c1288ebbc48686cc2cf467c7a SHA512 ca249262c7102e0889ec1bdc6f71a3a6f0e7e5d5fbab8abcd6fccd2871e7955eff7af5b055a76006097baf0dfaf2f5069eff3035b3107fc552abdb2481b21447
 DIST llvm-project-17.0.0rc3.src.tar.xz 127805656 BLAKE2B ecaead9f227b8357a5dc5ff21554d9b4f5aa036df1b88676fd8c3e16b438381db062872be396af5246e12cd71812a886016e0331a272dafc3508ecd0bfbb50ed SHA512 5f48b4af2e4f9bc470fcfd42fd48072b7bd442bc676d8401b04fbc6e9014a9a78e1bf524ba78f7ae8a1246222a6b03ca662721e3bf6e9eb03a015dd3306c7234
 DIST llvm-project-17.0.0rc3.src.tar.xz.sig 438 BLAKE2B 7b644cf501d17a6aef9b052e359ba06c1840a75e5263de46d938dbbdea07720b53d7ee6b5861ad641d0f7a7f75c6cc17717847b0ea9cf08873dbfacbe1c19074 SHA512 7059b1a90b7dd8cfa831f9e199a3a817358fd75d7c7d7e6de446d5443fce5831877a28e9b964ea238c1d803f9054bf4f53a97622d5f756f7f99aaa1c1a279f44
+DIST llvm-project-17.0.0rc4.src.tar.xz 127838724 BLAKE2B e3bf524e55db5e4305099ecdff09c0d3eab7957a5f8729eefe636e361460f405fbfd569af38aa39eea3b6c1e024feaa0400f8bc092194f2c3b54c695e7962591 SHA512 be7b5ad136d03864dbd11a589ca9e8b0b04a4226ebcffcc123b3ba72992f704bab4f9550d03eb2ac1d21fb8b73ac7824398b4cb4c9cec2118efb112babfe0f65
+DIST llvm-project-17.0.0rc4.src.tar.xz.sig 438 BLAKE2B 2cda35b4a3ebddfdbe6828459c8bd8fdfaa8e04d2d1c4f2faf16f5c66909186d2dd73e6a163cf733d8955c007249cf3f62f237855d5a76b1b61f3bfa30e4972d SHA512 5f713e05b7c58fab6e9cc43f2f3f69120482c9b60008146da0cddb266d1a5c9b9a77e1e338fce4e15624b332ac53a90c5c4a6f62c58a77f2122a015b4f0ebed2
 DIST llvm-project-e3373c6c83d3855adb78f1952a3bf0398baf359e.tar.gz 196926975 BLAKE2B 9da1052db0a6ff81a8b76cbf9cb2ab7eed5c8798dc5ae6887a4694de8b151c7a1282cfff2da2e8440b1a67d3d12c33db319fbbe6062761b6d5369e6b335821ae SHA512 8bb6d49ddb824e932f7bad3c51e4a6c2227139aaf19c02e9deb15657919bc12ea41844d8fe045061814aefb9031d82b167c7c0c20bedaa09aaffe164a2109f7d
 DIST llvm-project-f6259d9b9a546dbfa5bc2f29313c6edd6c701177.tar.gz 196957045 BLAKE2B c38b17f4e697c090b0b70385e45ca4ce97981746738e556154895d5b57cede90f6b8bdc5f41023bda6e942f07f572aa508cf0107fb81bee80a5ea9f13ac495fd SHA512 8394a42e1963618ed7f7cf7770acb72ae6bf84f3e2351218b5049ea2d76ff6ae768ad5588ffd1b2be1b5228a8fcb03663430814c409ceb9fa5735c891847f816
diff --git a/sys-libs/libcxx/libcxx-17.0.0_rc4.ebuild b/sys-libs/libcxx/libcxx-17.0.0_rc4.ebuild
new file mode 100644
index 000000000000..bb005b4d8ec8
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-17.0.0_rc4.ebuild
@@ -0,0 +1,204 @@
+# Copyright 1999-2023 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 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="+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-util/cmake-3.16
+		sys-devel/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() {
+	# 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 [[ ${CHOST} != *-darwin* ]] || has_version sys-devel/llvm; then
+		LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
+	fi
+	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=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=${use_compiler_rt}
+	)
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${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
+}