llvm-runtimes/libcxx: Add 22.0.0_pre20250907 snapshot

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

2 files changed, 256 insertions, 0 deletions

diff --git a/llvm-runtimes/libcxx/Manifest b/llvm-runtimes/libcxx/Manifest
index 9934011234db..ceac90fd335f 100644
--- a/llvm-runtimes/libcxx/Manifest
+++ b/llvm-runtimes/libcxx/Manifest
@@ -15,4 +15,5 @@ DIST llvm-project-20.1.8.src.tar.xz 147242952 BLAKE2B 7657ac0b26acc5affb1bfc91b9
 DIST llvm-project-20.1.8.src.tar.xz.sig 566 BLAKE2B 85beedfcff1195a974fab2c667b9efd4b715b3480c1b44b1b887fe32c69f72aca0d3b8fb276c03b6cc5a866622f669047aeee5ccb976640b4008ccd31dce77a4 SHA512 d74369bdb4d1b82775161ea53c9c5f3a23ce810f4df5ff617123023f9d8ce720e7d6ecc9e17f8ebd39fd9e7a9de79560abdf2ffe73bcb907a43148d43665d619
 DIST llvm-project-21.1.0.src.tar.xz 158971856 BLAKE2B ac8c3cc8d2c986abcaa523acc872b01311ec118a738654f9cc53a1d5fdba70ba10cfe829e23f3913557e460403ed6a2df81cb5e9a435c8e1ce08e7ead3511bf0 SHA512 1487dcdc041dd6cdcffa6cc95a565e18a9fce2a73215671e366a9601cecce6c8bf70065df5564de5998d1841c3d8d829a9fbd2cad72e3aab4db279e8885ff446
 DIST llvm-project-21.1.0.src.tar.xz.sig 438 BLAKE2B c5731350bc7454867da18887628c0e87bf404589097034c7ddfffbeec277b900bd1fa49daabd41d4f8800a8ab76105bf7e910a99dd970819ab987373d4ed4ed9 SHA512 c3cd0a759e22a24f4307d8747b7986f966f4fa3c413092efc73ccca252476f1b59878dc65b444884515bcce3d3bfab902f585cc1d08e2aeb55aa8e588128aeb6
+DIST llvm-project-645dd324d1b7d028745c2a4045b69e745df2ae6a.tar.gz 247443586 BLAKE2B dd3229c32768e42fd2f311638f1e63f5503fabee3fa414bc3300313b36bbfa062d90900319e4fdbbafae17947537fba699fe5940e1b6553a2d9a716c0ce7b59c SHA512 659dc22e2fd1fd0bced13f941127797dc7703b8d810eeb7a0fc51cf55c274e69e2d6660867c191d5d90615ddee3a1faff7f7cd357ff2eb88d715762be50098c3
 DIST llvm-project-d76bb2bb894a4641ed62447327b40a347a6ae883.tar.gz 245754836 BLAKE2B 487e6396f1b381743dfbbd13e8f55728f1f915c042c717433e498127ecdeb4405a67e998059f5eb1f84e851437b805ba9e9c0e390c61092c7ee336a801d6f342 SHA512 42e38f917357918e8d62d8893a1ba34b431cd8aabf924b89e5352013bb8984c10c0b2796fa9a725bab71e52f99216604b75606bde3b795d20082d97d0f7a82ad
diff --git a/llvm-runtimes/libcxx/libcxx-22.0.0_pre20250907.ebuild b/llvm-runtimes/libcxx/libcxx-22.0.0_pre20250907.ebuild
new file mode 100644
index 000000000000..780fc7161714
--- /dev/null
+++ b/llvm-runtimes/libcxx/libcxx-22.0.0_pre20250907.ebuild
@@ -0,0 +1,255 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} )
+inherit cmake-multilib crossdev flag-o-matic llvm.org llvm-utils
+inherit 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"
+IUSE="+clang +libcxxabi +static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	libcxxabi? (
+		~llvm-runtimes/libcxxabi-${PV}[static-libs?,${MULTILIB_USEDEP}]
+	)
+	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )
+"
+DEPEND="
+	${RDEPEND}
+	llvm-core/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		llvm-core/clang:${LLVM_MAJOR}
+		llvm-core/clang-linker-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-rtlib-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-unwindlib-config:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		dev-debug/gdb[python]
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=(
+	runtimes libcxx{,abi} libc 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
+}
+
+test_compiler() {
+	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	local install_prefix=${EPREFIX}
+	is_crosspkg && install_prefix+=/usr/${CTARGET}
+
+	# 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="${install_prefix}/usr/include/c++/v1"
+	else
+		local gcc_inc="${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() {
+	# Workaround for bgo #961153.
+	# TODO: Fix the multilib.eclass, so it sets CTARGET properly.
+	if ! is_crosspkg; then
+		export CTARGET=${CHOST}
+	fi
+
+	if use clang; then
+		llvm_prepend_path -b "${LLVM_MAJOR}"
+		local -x CC=${CTARGET}-clang-${LLVM_MAJOR}
+		local -x CXX=${CTARGET}-clang++-${LLVM_MAJOR}
+		strip-unsupported-flags
+
+		# The full clang configuration might not be ready yet. Use the partial
+		# configuration of components that libunwind depends on.
+		local flags=(
+			--config="${ESYSROOT}"/etc/clang/"${LLVM_MAJOR}"/gentoo-{rtlib,unwindlib,linker}.cfg
+		)
+		local -x CFLAGS="${CFLAGS} ${flags[@]}"
+		local -x CXXFLAGS="${CXXFLAGS} ${flags[@]}"
+		local -x LDFLAGS="${LDFLAGS} ${flags[@]}"
+	fi
+
+	# link to compiler-rt
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	local nostdlib_flags=( -nostdlib++ )
+	if ! test_compiler && test_compiler "${nostdlib_flags[@]}"; then
+		local -x LDFLAGS="${LDFLAGS} ${nort_flags[*]}"
+		ewarn "${CXX} seems to lack runtime, trying with ${nort_flags[*]}"
+	fi
+
+	local libdir=$(get_libdir)
+	local mycmakeargs=(
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DCMAKE_CXX_COMPILER_TARGET="${CTARGET}"
+		-DPython3_EXECUTABLE="${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=$(llvm_cmake_use_musl)
+		-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		-DLIBCXX_INCLUDE_TESTS=$(usex test)
+		-DLIBCXX_INSTALL_MODULES=ON
+		-DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
+		# this is broken with standalone builds, and also meaningless
+		-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+	)
+	if is_crosspkg; then
+		# Needed to target built libc headers
+		local -x CFLAGS="${CFLAGS} -isystem ${ESYSROOT}/usr/${CTARGET}/usr/include"
+		mycmakeargs+=(
+			# Without this, the compiler will compile a test program
+			# and fail due to no builtins.
+			-DCMAKE_C_COMPILER_WORKS=1
+			-DCMAKE_CXX_COMPILER_WORKS=1
+			# Install inside the cross sysroot.
+			-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/${CTARGET}/usr"
+		)
+	fi
+	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 [[ ${CHOST} != *-darwin* ]] ; then
+		gen_shared_ldscript
+		use static-libs && gen_static_ldscript
+	fi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	# https://github.com/llvm/llvm-project/issues/153940
+	local -x LIT_XFAIL="libcxx/gdb/gdb_pretty_printer_test.sh.cpp"
+	cmake_build install-cxx-test-suite-prefix
+	cp "${BUILD_DIR}"/{lib,libcxx/test-suite-install/$(get_libdir)}/libc++_shared.so || die
+	if use static-libs; then
+		cp "${BUILD_DIR}"/{lib,libcxx/test-suite-install/$(get_libdir)}/libc++_static.a || die
+	fi
+	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 [[ ${CHOST} != *-darwin* ]] ; then
+		is_crosspkg && into /usr/${CTARGET}
+		dolib.so lib/libc++_shared.so
+		use static-libs && dolib.a lib/libc++_static.a
+	fi
+
+	local install_prefix=
+	is_crosspkg && install_prefix=/usr/${CTARGET}
+	insinto "${install_prefix}/usr/share/libc++/gdb"
+	doins ../libcxx/utils/gdb/libcxx/printers.py
+
+	local lib_version=$(sed -n -e 's/^LIBCXX_LIBRARY_VERSION:STRING=//p' CMakeCache.txt || die)
+	[[ -n ${lib_version} ]] || die "Could not determine LIBCXX_LIBRARY_VERSION from CMakeCache.txt"
+
+	insinto "${install_prefix}/usr/share/gdb/auto-load/usr/$(get_libdir)"
+	newins - "libc++.so.${lib_version}-gdb.py" <<-EOF
+		__import__("sys").path.insert(0, "${EPREFIX}/usr/share/libc++/gdb")
+		__import__("printers").register_libcxx_printer_loader()
+	EOF
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(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
+}