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# Copyright 1999-2024 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="Low level support for a standard C++ library"
HOMEPAGE="https://libcxxabi.llvm.org/"
LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
SLOT="0"
IUSE="+clang +static-libs test"
REQUIRED_USE="test? ( clang )"
RESTRICT="!test? ( test )"
# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
RDEPEND+="
!<llvm-runtimes/libcxx-15
"
DEPEND="
${RDEPEND}
sys-devel/llvm:${LLVM_MAJOR}
"
BDEPEND="
clang? (
sys-devel/clang:${LLVM_MAJOR}
)
!test? (
${PYTHON_DEPS}
)
test? (
$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
)
"
LLVM_COMPONENTS=( runtimes libcxx{abi,} llvm/cmake cmake )
LLVM_TEST_COMPONENTS=( libc llvm/utils/llvm-lit )
llvm.org_set_globals
python_check_deps() {
use test || return 0
python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
}
multilib_src_configure() {
llvm_prepend_path "${LLVM_MAJOR}"
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
[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
local libdir=$(get_libdir)
local mycmakeargs=(
-DCMAKE_CXX_COMPILER_TARGET="${CHOST}"
-DPython3_EXECUTABLE="${PYTHON}"
-DLLVM_ENABLE_RUNTIMES="libcxxabi;libcxx"
-DLLVM_INCLUDE_TESTS=OFF
-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
-DLIBCXXABI_ENABLE_SHARED=ON
-DLIBCXXABI_ENABLE_STATIC=$(usex static-libs)
-DLIBCXXABI_INCLUDE_TESTS=$(usex test)
-DLIBCXXABI_USE_COMPILER_RT=${use_compiler_rt}
# upstream is omitting standard search path for this
# probably because gcc & clang are bundling their own unwind.h
-DLIBCXXABI_LIBUNWIND_INCLUDES="${EPREFIX}"/usr/include
# this is broken with standalone builds, and also meaningless
-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
-DLIBCXX_ENABLE_SHARED=ON
-DLIBCXX_ENABLE_STATIC=OFF
-DLIBCXX_CXX_ABI=libcxxabi
-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
-DLIBCXX_HAS_GCC_S_LIB=OFF
-DLIBCXX_INCLUDE_BENCHMARKS=OFF
-DLIBCXX_INCLUDE_TESTS=OFF
)
if use test; then
mycmakeargs+=(
-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
-DLLVM_LIT_ARGS="$(get_lit_flags)"
-DPython3_EXECUTABLE="${PYTHON}"
)
fi
cmake_src_configure
}
multilib_src_compile() {
cmake_build cxxabi
}
multilib_src_test() {
local -x LIT_PRESERVES_TMP=1
cmake_build check-cxxabi
}
multilib_src_install() {
DESTDIR="${D}" cmake_build install-cxxabi
}
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