commit:     f0fe3c010a112f073d086e8c2dcd57e8bd721f2d
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Tue Feb 11 10:56:55 2025 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Tue Feb 11 11:29:43 2025 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f0fe3c01

llvm-runtimes/libcxx: Add 21.0.0_pre20250211 snapshot

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

 llvm-runtimes/libcxx/Manifest                      |   1 +
 .../libcxx/libcxx-21.0.0_pre20250211.ebuild        | 208 +++++++++++++++++++++
 2 files changed, 209 insertions(+)

diff --git a/llvm-runtimes/libcxx/Manifest b/llvm-runtimes/libcxx/Manifest
index 4a85a743d7f2..e88717323b99 100644
--- a/llvm-runtimes/libcxx/Manifest
+++ b/llvm-runtimes/libcxx/Manifest
@@ -15,5 +15,6 @@ DIST llvm-project-19.1.7.src.tar.xz.sig 438 BLAKE2B 
4015140f4ba77de45039bdbdfbaf
 DIST llvm-project-1f26ac10ca1bef40a80be8f81a6f109713bc586f.tar.gz 226424755 
BLAKE2B 
642befb8d6923f335d1d68129ebb7357f8ba22e110df494dd956c8097e4e5db4b2a88fcc069ab67184b03558f072c68e002bdaf90eba865e38b1473a0ef29eed
 SHA512 
e9bb4fd31bbad5ec864c662515b5ec2e5511cce975040f9f3cd8f009c92f76077928feae0467fd9519a001a379c857f7539c506953d8d5a9209a9f358f414aac
 DIST llvm-project-20.1.0-rc1.src.tar.xz 147144668 BLAKE2B 
ea4733962f38ea5897c73e91840818921739909c3671749bc8a0b1d2798e5a0815bbe750ade3a2a7414836ab7158754818b2f9370a4ee1bbbd52c96b1e95ef9b
 SHA512 
c23c4b1227b6b0b7c3059358e64a00ee98893236bb1a0a41d7e821bdf2aa8353aea8f9f7b9498899c6807b9b8e2ceb06c3cd62e32fd07a786a319135055541b4
 DIST llvm-project-20.1.0-rc1.src.tar.xz.sig 566 BLAKE2B 
32eb278ec4ff1bb9d258b584922b0d227f4126a957ba75af44dcaa63b6a12ef73db56d6a86f24244af47803ddf6a243149d784f08137cbea60b49700be537705
 SHA512 
d7a334326201f8ca78284b33c325f180538667a0401bc30931e790aacc96dd78f6559c45929b6c335d40ef1dbe772738c0ce55d881ae3d7401733778b485408c
+DIST llvm-project-2cd8207b26ea4269630feba661f68554d7ae3c15.tar.gz 227261597 
BLAKE2B 
51ce992b651fcf08b7fd520420040803b59f1260947953325400c50bec576c418b162d8ae2d2307e70b885b1185c302a97409bcfe48cdb14b8e1384f4e2dfa9e
 SHA512 
a41749943508ea4a18b47c4e947917b5268544e64372c0c3347f9ab8172a2c229d8b1d813d1e842be1b98aedd624524857ed3bb23fe98ad5f36e7a71581abb4b
 DIST llvm-project-6f241e36831927e3aea113cfc017c34fdeda340a.tar.gz 227203285 
BLAKE2B 
8d5e424c1836acc82ea766cd2cef104593c44d197ebeb64f18dbe74b1b5baeb4bc84084f5b68bd87ac36f7df25689dd2522cb6674a97da4f96f4f10f7bae5b06
 SHA512 
2b6e4bd6445eabfa3ace9b45d20797c7afc23f4553a8938399aeba227e3b8ca6a53a7d7762925a845bfed031c37af692b9c08180fbab80db2f3166940e560077
 DIST llvm-project-bfa7edcc6652bdb37d53e0cec64926aab3f280eb.tar.gz 226735989 
BLAKE2B 
165837dc526e618b44c49d5fa3dceda373452e010a09746bff248903fe77874637d05ab9f5d2f63de7ebce5c14e3b19a131313a4a557adfd20fe9cb93ab60476
 SHA512 
e9e19176fcf1302727ee34d69eaa820b94959d64ceaf754d8a93ebd5e262cec7fe35e87b08f705b09e42c3ea26b671318eecf10e9137c635b12f481f80fbac23

diff --git a/llvm-runtimes/libcxx/libcxx-21.0.0_pre20250211.ebuild 
b/llvm-runtimes/libcxx/libcxx-21.0.0_pre20250211.ebuild
new file mode 100644
index 000000000000..3bd46e20f1ca
--- /dev/null
+++ b/llvm-runtimes/libcxx/libcxx-21.0.0_pre20250211.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
+}

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