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# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
PYTHON_COMPAT=( python3_{9..10} )
inherit cmake-multilib flag-o-matic llvm llvm.org python-any-r1 toolchain-funcs
DESCRIPTION="C++ runtime stack unwinder from LLVM"
HOMEPAGE="https://llvm.org/docs/ExceptionHandling.html"
LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
SLOT="0"
KEYWORDS="amd64 arm arm64 ~ppc ppc64 ~riscv sparc x86 ~x64-macos"
IUSE="debug static-libs test"
RESTRICT="!test? ( test )"
RDEPEND="
!sys-libs/libunwind
"
# llvm-6 for new lit options
DEPEND="
>=sys-devel/llvm-6
"
BDEPEND="
!test? (
${PYTHON_DEPS}
)
test? (
>=sys-devel/clang-3.9.0
$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
)
"
LLVM_COMPONENTS=( runtimes libunwind libcxx llvm/cmake cmake )
LLVM_TEST_COMPONENTS=( libcxxabi llvm/utils/llvm-lit )
llvm.org_set_globals
python_check_deps() {
use test || return 0
python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
}
multilib_src_configure() {
local libdir=$(get_libdir)
# https://github.com/llvm/llvm-project/issues/56825
# also separately bug #863917
filter-lto
# link to compiler-rt
# https://github.com/gentoo/gentoo/pull/21516
local use_compiler_rt=OFF
[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
local mycmakeargs=(
-DPython3_EXECUTABLE="${PYTHON}"
-DLLVM_ENABLE_RUNTIMES="libunwind"
-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
-DLLVM_INCLUDE_TESTS=OFF
-DLIBUNWIND_ENABLE_ASSERTIONS=$(usex debug)
-DLIBUNWIND_ENABLE_STATIC=$(usex static-libs)
-DLIBUNWIND_INCLUDE_TESTS=$(usex test)
-DLIBUNWIND_INSTALL_HEADERS=ON
-DLIBUNWIND_TARGET_TRIPLE="${CHOST}"
# support non-native unwinding; given it's small enough,
# enable it unconditionally
-DLIBUNWIND_ENABLE_CROSS_UNWINDING=ON
# avoid dependency on libgcc_s if compiler-rt is used
-DLIBUNWIND_USE_COMPILER_RT=${use_compiler_rt}
)
if use test; then
mycmakeargs+=(
-DLLVM_ENABLE_RUNTIMES="libunwind;libcxxabi;libcxx"
-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
-DLLVM_LIT_ARGS="$(get_lit_flags)"
-DLIBUNWIND_LIBCXX_PATH="${WORKDIR}/libcxx"
-DLIBCXXABI_LIBDIR_SUFFIX=
-DLIBCXXABI_ENABLE_SHARED=OFF
-DLIBCXXABI_ENABLE_STATIC=ON
-DLIBCXXABI_USE_LLVM_UNWINDER=ON
-DLIBCXXABI_INCLUDE_TESTS=OFF
-DLIBCXX_LIBDIR_SUFFIX=
-DLIBCXX_ENABLE_SHARED=OFF
-DLIBCXX_ENABLE_STATIC=ON
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF
-DLIBCXX_CXX_ABI=libcxxabi
-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
-DLIBCXX_HAS_GCC_S_LIB=OFF
-DLIBCXX_INCLUDE_TESTS=OFF
-DLIBCXX_INCLUDE_BENCHMARKS=OFF
)
fi
cmake_src_configure
if use test; then
local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
# meh, we need to override the compiler explicitly
sed -e "/%{cxx}/s@, '.*'@, '${clang_path}'@" \
-i "${BUILD_DIR}"/libunwind/test/lit.site.cfg || die
fi
}
multilib_src_test() {
local -x LIT_PRESERVES_TMP=1
cmake_build check-unwind
}
multilib_src_install() {
DESTDIR=${D} cmake_build install-unwind
}
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