commit:     64cac03b95e873f97f5ee194886dc699a793e706
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Mon Jul  5 20:59:57 2021 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Mon Jul  5 22:53:58 2021 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=64cac03b

sys-libs/libcxx: Bump to 12.0.1-rc4

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

 sys-libs/libcxx/Manifest                 |   1 +
 sys-libs/libcxx/libcxx-12.0.1_rc4.ebuild | 212 +++++++++++++++++++++++++++++++
 2 files changed, 213 insertions(+)

diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index 3d502aefa02..2170cd12357 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -7,3 +7,4 @@ DIST llvmorg-11.1.0.tar.gz 122776532 BLAKE2B 
ca842ff4afff8f44c82b5e7383962a9c45c
 DIST llvmorg-12.0.0.tar.gz 134226215 BLAKE2B 
f9c3ba8c58571855caa4f206fd285c9b5be66672fb0814cb8bc0964a051f57f5d35013aa1e27cbda502652b37df1ec23474129109e76a42066847860db441dbe
 SHA512 
0cff02155c5ac0d6db2b72d60d9819d5b5dd859663b45f721b1c7540239c2fceb1f57d9173f6870c49de851c242ed8e85c5c6d6577a1f8092a7c5dcd12513b26
 DIST llvmorg-12.0.1-rc1.tar.gz 134261735 BLAKE2B 
d29510495641c06e6d7a5ac165e6d34e0ba15d1a5b786534e186e341e3a0550cdd3d8a2b61deb3e2bf44c0b0ff8561224bf7f8cebc2ce9415639cb67ceae289e
 SHA512 
4595a26df56eed7d5941240fe92116ad2f1c61639f0f464697c2c530a601347032fbad6802d1fa915ced8574c7b30ef05bc8c0be737784c844d3860892817e6e
 DIST llvmorg-12.0.1-rc2.tar.gz 134274147 BLAKE2B 
2d3f6ce8d5239cf2e5ea52f4b9020d6a8fedb8d6a4df02ca0d8e4398237f4eb967865e1e65570d16cd191865281b9619a63905c1e1c47b31183b881e97e49867
 SHA512 
cdebb954016dc92251cd9c6281804f7a36e7bc8c6f101a6817d96cc121aba4d361fb99501c259409a29c90d7749b224be670c41177fe43fa64b730ff294831b8
+DIST llvmorg-12.0.1-rc4.tar.gz 134278617 BLAKE2B 
d407421c7244bb125151e69e2a341f1af0a0cf8c1fda3b8ae3d4114c3a285d6307620bbf82b22d96d2c7782b37b0975e87be80c24e3ce1fdc71152734be1e8f8
 SHA512 
1a2c18435a970491eb9fc9381ba66af726e17dcbd5bf6774f9341b1e82fd35f2e5686844743f5317ebd2106b902c39e09aa98102e58a86e290b29102241c949f

diff --git a/sys-libs/libcxx/libcxx-12.0.1_rc4.ebuild 
b/sys-libs/libcxx/libcxx-12.0.1_rc4.ebuild
new file mode 100644
index 00000000000..861d92b62c2
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-12.0.1_rc4.ebuild
@@ -0,0 +1,212 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_ECLASS=cmake
+PYTHON_COMPAT=( python3_{7..9} )
+inherit cmake-multilib 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="elibc_glibc elibc_musl +libcxxabi +libunwind static-libs test"
+REQUIRED_USE="libunwind? ( libcxxabi )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+       libcxxabi? ( 
~sys-libs/libcxxabi-${PV}[libunwind=,static-libs?,${MULTILIB_USEDEP}] )
+       !libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )"
+# llvm-6 for new lit options
+# clang-3.9.0 installs necessary target symlinks unconditionally
+# which removes the need for MULTILIB_USEDEP
+DEPEND="${RDEPEND}
+       >=sys-devel/llvm-6"
+BDEPEND="
+       test? (
+               >=dev-util/cmake-3.16
+               >=sys-devel/clang-3.9.0
+               $(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+       )"
+
+DOCS=( CREDITS.TXT )
+
+LLVM_COMPONENTS=( libcxx{,abi} llvm/{cmake/modules,utils/llvm-lit} )
+LLVM_PATCHSET=9999-1
+llvm.org_set_globals
+
+python_check_deps() {
+       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 dev-lang/llvm; then
+               llvm_pkg_setup
+       fi
+       use test && 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=libcxxabi
+               cxxabi_incs="${EPREFIX}/usr/include/libcxxabi"
+       else
+               local 
gcc_inc="${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() {
+       # we want -lgcc_s for unwinder, and for compiler runtime when using
+       # gcc, clang with gcc runtime (or any unknown compiler)
+       local extra_libs=() want_gcc_s=ON want_compiler_rt=OFF
+       if use libunwind; then
+               # work-around missing -lunwind upstream
+               extra_libs+=( -lunwind )
+               # if we're using libunwind and clang with compiler-rt, we want
+               # to link to compiler-rt instead of -lgcc_s
+               if tc-is-clang; then
+                       local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
+                          ${LDFLAGS} -print-libgcc-file-name)
+                       if [[ ${compiler_rt} == *libclang_rt* ]]; then
+                               want_gcc_s=OFF
+                               want_compiler_rt=ON
+                               extra_libs+=( "${compiler_rt}" )
+                       fi
+               fi
+       elif [[ ${CHOST} == *-darwin* ]] && tc-is-clang; then
+               # clang-based darwin prefix disables libunwind useflag during
+               # bootstrap, because libunwind is not in the prefix yet.
+               # override the default, though, because clang based libcxx
+               # should never use gcc_s on Darwin.
+               want_gcc_s=OFF
+               # compiler_rt is not available in EPREFIX during bootstrap,
+               # so we cannot link to it yet anyway, so keep the defaults
+               # of want_compiler_rt=OFF and extra_libs=()
+       fi
+
+       # bootstrap: cmake is unhappy if compiler can't link to stdlib
+       local nolib_flags=( -nodefaultlibs -lc )
+       if ! test_compiler; then
+               if test_compiler "${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=(
+               -DLIBCXX_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=$(usex elibc_musl)
+               -DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s}
+               -DLIBCXX_INCLUDE_TESTS=$(usex test)
+               -DLIBCXX_USE_COMPILER_RT=${want_compiler_rt}
+               -DLIBCXX_HAS_ATOMIC_LIB=${want_gcc_s}
+               -DCMAKE_SHARED_LINKER_FLAGS="${extra_libs[*]} ${LDFLAGS}"
+       )
+
+       if use test; then
+               local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 
2>/dev/null)
+               [[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang 
for tests"
+
+               mycmakeargs+=(
+                       -DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+                       
-DLLVM_LIT_ARGS="$(get_lit_flags);--param=cxx_under_test=${clang_path}"
+                       -DPython3_EXECUTABLE="${PYTHON}"
+               )
+       fi
+       cmake_src_configure
+}
+
+multilib_src_test() {
+       local -x LIT_PRESERVES_TMP=1
+       cmake_build check-cxx
+}
+
+# Usage: deps
+gen_ldscript() {
+       local output_format
+       output_format=$($(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 ( $@ )
+END_LDSCRIPT
+}
+
+gen_static_ldscript() {
+       local libdir=$(get_libdir)
+       local cxxabi_lib=$(usex libcxxabi "libc++abi.a" "libsupc++.a")
+
+       # Move it first.
+       mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/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 ${cxxabi_lib} $(usex libunwind libunwind.a 
libgcc_eh.a)"
+       # On Linux/glibc it does not link without libpthread or libdl. It is
+       # fine on FreeBSD.
+       use elibc_glibc && deps+=" libpthread.a libdl.a"
+
+       gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die
+}
+
+gen_shared_ldscript() {
+       local libdir=$(get_libdir)
+       # libsupc++ doesn't have a shared version
+       local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "libsupc++.a")
+
+       mv "${ED}/usr/${libdir}/libc++.so" 
"${ED}/usr/${libdir}/libc++_shared.so" || die
+       local deps="libc++_shared.so ${cxxabi_lib} $(usex libunwind 
libunwind.so libgcc_s.so)"
+
+       gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die
+}
+
+multilib_src_install() {
+       cmake_src_install
+       if [[ ${CHOST} != *-darwin* ]] ; then
+               gen_shared_ldscript
+               use static-libs && gen_static_ldscript
+       fi
+}
+
+pkg_postinst() {
+       elog "This package (${PN}) is mainly intended as a replacement for the 
C++"
+       elog "standard library when using clang."
+       elog "To use it, instead of libstdc++, use:"
+       elog "    clang++ -stdlib=libc++"
+       elog "to compile your C++ programs."
+}

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