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151 lines
4.1 KiB
Bash
151 lines
4.1 KiB
Bash
# 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="Low level support for a standard C++ library"
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HOMEPAGE="https://libcxxabi.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 +static-libs test"
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REQUIRED_USE="test? ( clang )"
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RESTRICT="!test? ( test )"
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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:${LLVM_MAJOR}
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llvm-core/clang-linker-config:${LLVM_MAJOR}
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llvm-runtimes/clang-rtlib-config:${LLVM_MAJOR}
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llvm-runtimes/clang-unwindlib-config:${LLVM_MAJOR}
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)
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!test? (
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${PYTHON_DEPS}
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)
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test? (
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$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
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)
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"
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LLVM_COMPONENTS=( runtimes libcxx{abi,} llvm/cmake cmake )
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LLVM_TEST_COMPONENTS=(
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libc llvm/include/llvm/{Demangle,Testing} llvm/utils/llvm-lit
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)
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llvm.org_set_globals
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python_check_deps() {
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use test || return 0
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python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
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}
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test_compiler() {
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target_is_not_host && return
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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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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=${CTARGET}-clang-${LLVM_MAJOR}
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local -x CXX=${CTARGET}-clang++-${LLVM_MAJOR}
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strip-unsupported-flags
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# The full clang configuration might not be ready yet. Use the partial
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# configuration of components that libunwind depends on.
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#
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local flags=(
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--config="${ESYSROOT}"/etc/clang/"${LLVM_MAJOR}"/gentoo-{rtlib,unwindlib,linker}.cfg
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)
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local -x CFLAGS="${CFLAGS} ${flags[@]}"
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local -x CXXFLAGS="${CXXFLAGS} ${flags[@]}"
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local -x LDFLAGS="${LDFLAGS} ${flags[@]}"
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fi
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local nostdlib_flags=( -nostdlib++ )
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if ! test_compiler && test_compiler "${nostdlib_flags[@]}"; then
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local -x LDFLAGS="${LDFLAGS} ${nostdlib_flags[*]}"
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ewarn "${CXX} seems to lack stdlib, trying with ${nostdlib_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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[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
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local libdir=$(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="libcxxabi;libcxx"
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-DLLVM_INCLUDE_TESTS=OFF
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-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
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-DLIBCXXABI_ENABLE_SHARED=ON
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-DLIBCXXABI_ENABLE_STATIC=$(usex static-libs)
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-DLIBCXXABI_INCLUDE_TESTS=$(usex test)
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-DLIBCXXABI_USE_COMPILER_RT=${use_compiler_rt}
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# upstream is omitting standard search path for this
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# probably because gcc & clang are bundling their own unwind.h
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-DLIBCXXABI_LIBUNWIND_INCLUDES="${EPREFIX}"/usr/include
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# this is broken with standalone builds, and also meaningless
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-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
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-DLIBCXX_ENABLE_SHARED=ON
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-DLIBCXX_ENABLE_STATIC=OFF
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-DLIBCXX_CXX_ABI=libcxxabi
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-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
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-DLIBCXX_HAS_MUSL_LIBC=$(llvm_cmake_use_musl)
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-DLIBCXX_HAS_GCC_S_LIB=OFF
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-DLIBCXX_INCLUDE_BENCHMARKS=OFF
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-DLIBCXX_INCLUDE_TESTS=OFF
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)
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if is_crosspkg; then
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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="${PYTHON}"
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)
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fi
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cmake_src_configure
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}
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multilib_src_compile() {
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cmake_build cxxabi
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}
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multilib_src_test() {
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local -x LIT_PRESERVES_TMP=1
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cmake_build check-cxxabi
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}
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multilib_src_install() {
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DESTDIR="${D}" cmake_build install-cxxabi
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}
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