commit:     5f237edd62394d014127818225e84f56e7cfc379
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Thu May 29 15:14:46 2025 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Thu May 29 20:22:35 2025 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5f237edd

llvm-runtimes/libcxx: Bump to 20.1.6

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

 llvm-runtimes/libcxx/Manifest             |   2 +
 llvm-runtimes/libcxx/libcxx-20.1.6.ebuild | 209 ++++++++++++++++++++++++++++++
 2 files changed, 211 insertions(+)

diff --git a/llvm-runtimes/libcxx/Manifest b/llvm-runtimes/libcxx/Manifest
index bc72c71cb4d5..ca380e39ec4e 100644
--- a/llvm-runtimes/libcxx/Manifest
+++ b/llvm-runtimes/libcxx/Manifest
@@ -12,5 +12,7 @@ DIST llvm-project-19.1.7.src.tar.xz 141249332 BLAKE2B 
1259ed7f9aca7b35e89d818bef
 DIST llvm-project-19.1.7.src.tar.xz.sig 438 BLAKE2B 
4015140f4ba77de45039bdbdfbaf6f30e75705123d067ea97175d91d7a5b6a75008df01d99ae7aa16aaa3b101f3f41e38d01f04158f95a261d617b3ede0254cd
 SHA512 
195797b06ac80a742e0ccbc03a50dc06dd2e04377d783d5474e3e72c5a75203b60292b047929312a411d22b137a239943fba414a4d136a2be14cbff978eb6bda
 DIST llvm-project-20.1.5.src.tar.xz 147239812 BLAKE2B 
992ebec16a11f32f234ba8b9f228f27939cdaeaaba474a08da2564ba3075bb10ab92a44be704666bdd77f8294321d43da40bb9245c411a86cd53cff88223a91f
 SHA512 
3b7e657714fa9b943c75ec9eeb903018ab4713b1c3370746ba68893220729f178dabb971515741519f24e7ad0fa1dbce1345572bcf1d1fc1e5de97e4d2900a6b
 DIST llvm-project-20.1.5.src.tar.xz.sig 566 BLAKE2B 
c8be202b475726817893e1fe5fe2d3ab02ea1d3130ccfdf4c2c29b46e6aef79091de78e8a9aef59416ac1120bb3af6fdf47464db9b27b8fb4cb4194b0444e571
 SHA512 
c1bd30af5f7bfa6cac73994e9068d2791d9d27e86375fb15ad426422ad00cb43ade226c1b91ecc7daa950efae62c86300e4290d59649310f4e8fab5bdcb264fe
+DIST llvm-project-20.1.6.src.tar.xz 147239668 BLAKE2B 
ccd86730fdea3dd40ebf054661b854b9332204389db2205e1e7b2a7f140fc187cacb34de68aa9a63c15c1e17b1d0976c080cfdee7e2cb6b0dd5570001d84be12
 SHA512 
aae652fdc61bda3f80b1340a3270b687355bfb6817f4bc05dac2268a2f8c5fc677eadb515cda7c8518005f1dc39e7ce5d1c34bbc5a25f106ef8e6c8f1ecfdf6d
+DIST llvm-project-20.1.6.src.tar.xz.sig 566 BLAKE2B 
b7c48cfc1f6c9f513dadb8837b150e22043c215bf4958a8036c4077aeebdcf7c18223b0ce0ffbcacb2c7ddfeb06611b1022528ee04d3efda1ee1aa58367a9203
 SHA512 
0884048ff164a1f5caed0f1aabec173630a08ece98cf793d21b77fc969501e4f03daec39ae0fb124ad34a3436ceae66452e36a42c309f19790b7a87652482691
 DIST llvm-project-7dc7c155251c0008d5d59b84f0c9056365740f11.tar.gz 235921149 
BLAKE2B 
2867e313cd25fee6975da9bf65365fa51ed8780f3f8fc95983fb6e8f5b2c38c6d7f75a386b0ec2d74bafad74472973f4e4e603a5a0754465ac2b75942b8e90c6
 SHA512 
f8bc383ff2a1af836357150efa5728c7df3cd862f56ffaf12b5fc56ef631f1048276ff00b89fcf4d224576fa1eda9811d971886aae0855a4d29178060eb89a49
 DIST llvm-project-f8ca9e59cb438bd35b29a6d7cf6d72f50673aec9.tar.gz 236069626 
BLAKE2B 
5547770a22e5fd0240c0e435d0b0af0ebd789aa72d6829250917f2df605f9a95c6756bc1afc9b611b176c1ba8394c757b94789511b98b38c6ade6cca4c9ce7f6
 SHA512 
b1fffd7d4f5ede9bcda759bc59cdd47373a44a3bbd31a50d1d213e438a59f1da3cc96780a1d17ecaeb14454822921476406a6c37493354169f72e1fab7b3a3be

diff --git a/llvm-runtimes/libcxx/libcxx-20.1.6.ebuild 
b/llvm-runtimes/libcxx/libcxx-20.1.6.ebuild
new file mode 100644
index 000000000000..a5d900551442
--- /dev/null
+++ b/llvm-runtimes/libcxx/libcxx-20.1.6.ebuild
@@ -0,0 +1,209 @@
+# 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 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? (
+               ~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=$(llvm_cmake_use_musl)
+               -DLIBCXX_INCLUDE_BENCHMARKS=OFF
+               -DLIBCXX_INCLUDE_TESTS=$(usex test)
+               -DLIBCXX_INSTALL_MODULES=ON
+               -DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
+               # this is broken with standalone builds, and also meaningless
+               -DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+       )
+
+       if use test; then
+               mycmakeargs+=(
+                       -DLLVM_EXTERNAL_LIT="${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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