[gentoo-commits] repo/gentoo:master commit in: llvm-runtimes/libcxx/

["Michał Górny" <mgorny@gentoo.org>]

commit:     1f7d9be3de1d55051e7b1b4d049367b7b8b1d651
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Sat Feb 22 15:10:09 2025 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Sat Feb 22 15:19:16 2025 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=1f7d9be3

llvm-runtimes/libcxx: Add 21.0.0_pre20250221 snapshot

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

 llvm-runtimes/libcxx/Manifest                      |   1 +
 .../libcxx/libcxx-21.0.0_pre20250221.ebuild        | 208 +++++++++++++++++++++
 2 files changed, 209 insertions(+)

diff --git a/llvm-runtimes/libcxx/Manifest b/llvm-runtimes/libcxx/Manifest
index e56dea29f892..51d3a7f96842 100644
--- a/llvm-runtimes/libcxx/Manifest
+++ b/llvm-runtimes/libcxx/Manifest
@@ -15,4 +15,5 @@ DIST llvm-project-19.1.7.src.tar.xz.sig 438 BLAKE2B 4015140f4ba77de45039bdbdfbaf
 DIST llvm-project-20.1.0-rc2.src.tar.xz 147160684 BLAKE2B 6adc1226f022272d78fb0ed361c190d369a2afc53bf868409fe8f4e092d5ffb9894c71870f072bb68162610782f48088468b4a49cdb1bc731d6689c791a5b5e3 SHA512 f303deaec8f25e1b122a7e85df192b6ea10c51472b78a3d14ad9d0b976a533cfbb9164aff0bc99e447e30938cf43363552c5493b4693e1f23291ea7a9b824bbb
 DIST llvm-project-20.1.0-rc2.src.tar.xz.sig 566 BLAKE2B aa91f7be228e51b0f2234bb5e0df173e3ddc90b6db4350a9008c2f8ba53220da6eef0c69778aecac3caecf918a0c54a0d910177ffe7643ad7fc5624a97262b7f SHA512 e5563a8a79b5e9ef26d62dc6d4385c1c86d12a652b4b1e7fc9ce45a2ea66e5118112746a61b439823bf99d65aea82285eabf5e07714eec77e6e5cd02feab82ce
 DIST llvm-project-2cd8207b26ea4269630feba661f68554d7ae3c15.tar.gz 227261597 BLAKE2B 51ce992b651fcf08b7fd520420040803b59f1260947953325400c50bec576c418b162d8ae2d2307e70b885b1185c302a97409bcfe48cdb14b8e1384f4e2dfa9e SHA512 a41749943508ea4a18b47c4e947917b5268544e64372c0c3347f9ab8172a2c229d8b1d813d1e842be1b98aedd624524857ed3bb23fe98ad5f36e7a71581abb4b
+DIST llvm-project-581599096e8a1a89ccd3e053a1209c69a9079083.tar.gz 227830555 BLAKE2B 28a04dd5ce96716d389fe049c4b877f55d6e5cad5c77d8867dd7e3a448213ef413e4f4d7d5f77b0702b26a8eb25f53e08d90e2a5a97eaa3f89245531d9f6626d SHA512 d775aea9bf71d60673e966a689ff6b933afecab2c133a1f64a158551ba9db049221148eab5087bab0ce0ff917456b85fb4ea4d7284886326f54617d167a385a5
 DIST llvm-project-c30a7f459452d5766da244564bc1d5888346c364.tar.gz 227560986 BLAKE2B c1c833aa6d488530826d96db81ca8be2fcf842ccf5b10a65ff18269fdfa32fa2742fb0a547eb315c2a9ee383e1b6b6cce4a78136e1740e04d322c79fb6a66a86 SHA512 0b68d3462e5eac89f50cff5e64603758ab74c701ff2de88c8569dd45b7e702b5d13b26c2745615c0c355d46d13765f47e4d43e61cde735240c6f386c0090becb

diff --git a/llvm-runtimes/libcxx/libcxx-21.0.0_pre20250221.ebuild b/llvm-runtimes/libcxx/libcxx-21.0.0_pre20250221.ebuild
new file mode 100644
index 000000000000..3bd46e20f1ca
--- /dev/null
+++ b/llvm-runtimes/libcxx/libcxx-21.0.0_pre20250221.ebuild
@@ -0,0 +1,208 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+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"
+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}
+	)
+	!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() {
+	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_INSTALL_MODULES=ON
+		-DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
+		# this is broken with standalone builds, and also meaningless
+		-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+	)
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_compile() {
+	cmake_src_compile
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		gen_shared_ldscript
+		use static-libs && gen_static_ldscript
+	fi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build install-cxx-test-suite-prefix
+	cp "${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 [[ ${CHOST} != *-darwin* ]] ; then
+		dolib.so lib/libc++_shared.so
+		use static-libs && dolib.a lib/libc++_static.a
+	fi
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(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
+}