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llvm-runtimes/libcxx: Remove old
Signed-off-by: Michał Górny <mgorny@gentoo.org>
This commit is contained in:
Michał Górny
@@ -1,238 +0,0 @@
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# Copyright 1999-2025 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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PYTHON_COMPAT=( python3_{11..14} )
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inherit cmake-multilib crossdev flag-o-matic llvm.org llvm-utils
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inherit python-any-r1 toolchain-funcs
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DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
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HOMEPAGE="https://libcxx.llvm.org/"
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LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
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SLOT="0"
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KEYWORDS="amd64 arm arm64 ~loong ~riscv ~sparc x86 ~arm64-macos ~x64-macos"
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IUSE="+clang +libcxxabi +static-libs test"
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REQUIRED_USE="test? ( clang )"
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RESTRICT="!test? ( test )"
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RDEPEND="
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libcxxabi? (
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~llvm-runtimes/libcxxabi-${PV}[static-libs?,${MULTILIB_USEDEP}]
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)
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!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )
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"
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DEPEND="
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${RDEPEND}
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llvm-core/llvm:${LLVM_MAJOR}
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"
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BDEPEND="
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clang? (
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llvm-core/clang:${LLVM_MAJOR}
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)
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!test? (
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${PYTHON_DEPS}
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)
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test? (
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dev-debug/gdb[python]
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$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
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)
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"
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LLVM_COMPONENTS=(
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runtimes libcxx{,abi} libc llvm/{cmake,utils/llvm-lit} cmake
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)
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llvm.org_set_globals
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python_check_deps() {
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use test || return 0
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python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
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}
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pkg_setup() {
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python-any-r1_pkg_setup
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if ! use libcxxabi && ! tc-is-gcc ; then
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eerror "To build ${PN} against libsupc++, you have to use gcc. Other"
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eerror "compilers are not supported. Please set CC=gcc and CXX=g++"
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eerror "and try again."
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die
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fi
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}
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test_compiler() {
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$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
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<<<'int main() { return 0; }' &>/dev/null
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}
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src_configure() {
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local install_prefix=${EPREFIX}
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is_crosspkg && install_prefix+=/usr/${CTARGET}
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# note: we need to do this before multilib kicks in since it will
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# alter the CHOST
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local cxxabi cxxabi_incs
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if use libcxxabi; then
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cxxabi=system-libcxxabi
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cxxabi_incs="${install_prefix}/usr/include/c++/v1"
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else
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local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)"
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cxxabi=libsupc++
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cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}"
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fi
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multilib-minimal_src_configure
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}
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multilib_src_configure() {
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# Workaround for bgo #961153.
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# TODO: Fix the multilib.eclass, so it sets CTARGET properly.
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if ! is_crosspkg; then
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export CTARGET=${CHOST}
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fi
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if use clang; then
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llvm_prepend_path -b "${LLVM_MAJOR}"
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local -x CC=${CTARGET}-clang
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local -x CXX=${CTARGET}-clang++
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strip-unsupported-flags
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fi
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# link to compiler-rt
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local use_compiler_rt=OFF
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[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
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# Scenarios to consider:
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#
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# 1. Compiler test works with the default flags.
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# 2. There is a runtime library, but no stdlib. In that case, leave the
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# LDFLAGS untouched, since there is no self-dependency in libc++.
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# 3. There is no runtime library nor stdlib. In that case, overwrite the
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# LDFLAGS.
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local nostdlib_flags=( -nostdlib --rtlib=compiler-rt -lc )
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local nort_flags=( -nodefaultlibs -lc )
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if ! test_compiler && ! test_compiler "${nostdlib_flags[@]}"; then
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if test_compiler "${nort_flags[@]}"; then
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local -x LDFLAGS="${LDFLAGS} ${nort_flags[*]}"
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ewarn "${CXX} seems to lack runtime, trying with ${nort_flags[*]}"
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fi
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fi
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local libdir=$(get_libdir)
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local mycmakeargs=(
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-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
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-DCMAKE_CXX_COMPILER_TARGET="${CTARGET}"
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-DPython3_EXECUTABLE="${PYTHON}"
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-DLLVM_ENABLE_RUNTIMES=libcxx
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-DLLVM_INCLUDE_TESTS=OFF
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-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
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-DLIBCXX_ENABLE_SHARED=ON
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-DLIBCXX_ENABLE_STATIC=$(usex static-libs)
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-DLIBCXX_CXX_ABI=${cxxabi}
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-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs}
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# we're using our own mechanism for generating linker scripts
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-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
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-DLIBCXX_HAS_MUSL_LIBC=$(llvm_cmake_use_musl)
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-DLIBCXX_INCLUDE_BENCHMARKS=OFF
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-DLIBCXX_INCLUDE_TESTS=$(usex test)
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-DLIBCXX_INSTALL_MODULES=ON
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-DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
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# this is broken with standalone builds, and also meaningless
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-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
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)
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if is_crosspkg; then
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# Needed to target built libc headers
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local -x CFLAGS="${CFLAGS} -isystem ${ESYSROOT}/usr/${CTARGET}/usr/include"
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mycmakeargs+=(
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# Without this, the compiler will compile a test program
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# and fail due to no builtins.
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-DCMAKE_C_COMPILER_WORKS=1
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-DCMAKE_CXX_COMPILER_WORKS=1
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# Install inside the cross sysroot.
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-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/${CTARGET}/usr"
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)
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fi
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if use test; then
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mycmakeargs+=(
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-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
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-DLLVM_LIT_ARGS="$(get_lit_flags)"
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-DPython3_EXECUTABLE="${PYTHON}"
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)
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fi
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cmake_src_configure
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}
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multilib_src_compile() {
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cmake_src_compile
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if [[ ${CHOST} != *-darwin* ]] ; then
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gen_shared_ldscript
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use static-libs && gen_static_ldscript
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fi
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}
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multilib_src_test() {
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local -x LIT_PRESERVES_TMP=1
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cmake_build install-cxx-test-suite-prefix
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cp "${BUILD_DIR}"/{lib,libcxx/test-suite-install/$(get_libdir)}/libc++_shared.so || die
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if use static-libs; then
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cp "${BUILD_DIR}"/{lib,libcxx/test-suite-install/$(get_libdir)}/libc++_static.a || die
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fi
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cmake_build check-cxx
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}
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multilib_src_install() {
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cmake_src_install
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# since we've replaced libc++.{a,so} with ldscripts, now we have to
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# install the extra symlinks
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if [[ ${CHOST} != *-darwin* ]] ; then
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is_crosspkg && into /usr/${CTARGET}
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dolib.so lib/libc++_shared.so
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use static-libs && dolib.a lib/libc++_static.a
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fi
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}
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# Usage: deps
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gen_ldscript() {
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local output_format
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output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
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[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
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cat <<-END_LDSCRIPT
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/* GNU ld script
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Include missing dependencies
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*/
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${output_format}
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GROUP ( $@ )
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END_LDSCRIPT
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}
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gen_static_ldscript() {
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# Move it first.
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mv lib/libc++{,_static}.a || die
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# Generate libc++.a ldscript for inclusion of its dependencies so that
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# clang++ -stdlib=libc++ -static works out of the box.
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local deps=(
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libc++_static.a
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$(usex libcxxabi libc++abi.a libsupc++.a)
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)
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# On Linux/glibc it does not link without libpthread or libdl. It is
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# fine on FreeBSD.
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use elibc_glibc && deps+=( libpthread.a libdl.a )
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gen_ldscript "${deps[*]}" > lib/libc++.a || die
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}
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gen_shared_ldscript() {
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# Move it first.
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mv lib/libc++{,_shared}.so || die
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local deps=(
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libc++_shared.so
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# libsupc++ doesn't have a shared version
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$(usex libcxxabi libc++abi.so libsupc++.a)
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)
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gen_ldscript "${deps[*]}" > lib/libc++.so || die
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}
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