| # Copyright 1999-2017 Gentoo Foundation |
| # Distributed under the terms of the GNU General Public License v2 |
| |
| EAPI=6 |
| |
| # Ninja provides better scalability and cleaner verbose output, and is used |
| # throughout all LLVM projects. |
| : "${CMAKE_MAKEFILE_GENERATOR:=ninja}" |
| PYTHON_COMPAT=( python3_6 ) |
| |
| CROS_WORKON_REPO="${CROS_GIT_HOST_URL}" |
| CROS_WORKON_PROJECT="external/github.com/llvm/llvm-project" |
| CROS_WORKON_LOCALNAME="llvm-project" |
| CROS_WORKON_MANUAL_UPREV=1 |
| |
| inherit cmake-multilib cros-constants cros-llvm git-2 python-any-r1 toolchain-funcs cros-workon |
| |
| DESCRIPTION="New implementation of the C++ standard library, targeting C++11" |
| HOMEPAGE="http://libcxx.llvm.org/" |
| SRC_URI="" |
| |
| EGIT_REPO_URI="${CROS_GIT_HOST_URL}/external/github.com/llvm/llvm-project |
| ${CROS_GIT_HOST_URL}/external/github.com/llvm/llvm-project" |
| EGIT_BRANCH=main |
| |
| LLVM_HASH="a58d0af058038595c93de961b725f86997cf8d4a" # r458507 |
| LLVM_NEXT_HASH="db1978b67431ca3462ad8935bf662c15750b8252" # r465103 |
| |
| |
| LICENSE="|| ( UoI-NCSA MIT )" |
| SLOT="0" |
| KEYWORDS="*" |
| if [[ "${PV}" == "9999" ]]; then |
| KEYWORDS="~*" |
| fi |
| IUSE="+compiler-rt cros_host elibc_glibc elibc_musl +libcxxabi libcxxrt +libunwind llvm-next llvm-tot msan +static-libs continue-on-patch-failure" |
| REQUIRED_USE="libunwind? ( || ( libcxxabi libcxxrt ) ) |
| ?? ( libcxxabi libcxxrt )" |
| |
| # MULTILIB_USEDEP is defined in an eclass, which shellcheck won't see |
| # shellcheck disable=SC2154 |
| RDEPEND=" |
| libunwind? ( ${CATEGORY}/llvm-libunwind ) |
| libcxxrt? ( ${CATEGORY}/libcxxrt[libunwind=,static-libs?,${MULTILIB_USEDEP}] ) |
| !cros_host? ( sys-libs/gcc-libs )" |
| DEPEND="${RDEPEND} |
| cros_host? ( sys-devel/llvm ) |
| app-arch/xz-utils" |
| |
| python_check_deps() { |
| has_version "dev-python/lit[${PYTHON_USEDEP}]" |
| } |
| |
| src_unpack() { |
| if use llvm-next || use llvm-tot; then |
| export EGIT_COMMIT="${LLVM_NEXT_HASH}" |
| else |
| export EGIT_COMMIT="${LLVM_HASH}" |
| fi |
| if [[ "${PV}" != "9999" ]]; then |
| # According to cros-workon, CROS_WORKON_COMMIT cannot be enabled in |
| # a 9999 ebuild. |
| CROS_WORKON_COMMIT="${EGIT_COMMIT}" |
| fi |
| cros-workon_src_unpack |
| } |
| |
| src_prepare() { |
| local failure_mode |
| failure_mode="$(usex continue-on-patch-failure continue fail)" |
| "${FILESDIR}"/patch_manager/patch_manager.py \ |
| --svn_version "$(get_most_recent_revision)" \ |
| --patch_metadata_file "${FILESDIR}"/PATCHES.json \ |
| --failure_mode "${failure_mode}" \ |
| --src_path "${S}" || die |
| |
| eapply_user |
| } |
| |
| pkg_setup() { |
| setup_cross_toolchain |
| export CMAKE_USE_DIR="${S}/runtimes" |
| } |
| |
| multilib_src_configure() { |
| # Filter sanitzers flags. |
| filter_sanitizers |
| |
| cros_optimize_package_for_speed |
| |
| local cxxabi cxxabi_incs |
| if use libcxxabi; then |
| cxxabi=libcxxabi |
| # CTARGET is defined in an eclass, which shellcheck won't see |
| # shellcheck disable=SC2154 |
| cxxabi_incs="${SYSROOT}/${PREFIX}/include/libcxxabi" |
| fi |
| # Use vfpv3 to be able to target non-neon targets. |
| if [[ $(tc-arch) == "arm" ]] ; then |
| append-flags -mfpu=vfpv3 |
| fi |
| |
| # we want -lgcc_s for unwinder, and for compiler runtime when using |
| # gcc, clang with gcc runtime (or any unknown compiler) |
| local extra_libs=() want_gcc_s=ON |
| if use libunwind || use compiler-rt; then |
| # work-around missing -lunwind upstream |
| use libunwind && extra_libs+=( -lunwind ) |
| # if we're using libunwind and clang with compiler-rt, we want |
| # to link to compiler-rt instead of -lgcc_s |
| if tc-is-clang; then |
| # get the full library list out of 'pretend mode' |
| # and grep it for libclang_rt references |
| local args |
| IFS=" " read -r -a args <<< "$($(tc-getCC) -### -x c - 2>&1 | tail -n 1)" |
| local i |
| for i in "${args[@]}"; do |
| if [[ ${i} == *libclang_rt* ]]; then |
| want_gcc_s=OFF |
| extra_libs+=( "${i}" ) |
| fi |
| done |
| fi |
| fi |
| |
| # Link with libunwind.so. |
| use libunwind && append-ldflags "-shared-libgcc" |
| |
| # Enable futex in libc++abi to match prod toolchain. |
| append-cppflags -D_LIBCXXABI_USE_FUTEX |
| local libdir=$(get_libdir) |
| local mycmakeargs=( |
| "-DLIBCXX_LIBDIR_SUFFIX=${libdir#lib}" |
| "-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY" |
| "-DCMAKE_POSITION_INDEPENDENT_CODE=ON" |
| "-DLIBCXX_ENABLE_SHARED=ON" |
| "-DLIBCXX_ENABLE_STATIC=$(usex static-libs)" |
| "-DLIBCXX_INCLUDE_BENCHMARKS=OFF" |
| # we're using our own mechanism for generating linker scripts |
| "-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF" |
| "-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)" |
| "-DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s}" |
| "-DLIBCXX_USE_COMPILER_RT=$(usex compiler-rt)" |
| "-DLIBCXX_INCLUDE_TESTS=OFF" |
| "-DCMAKE_INSTALL_PREFIX=${PREFIX}" |
| "-DCMAKE_SHARED_LINKER_FLAGS=${extra_libs[*]} ${LDFLAGS}" |
| "-DLIBCXX_HAS_ATOMIC_LIB=OFF" |
| "-DCMAKE_C_COMPILER_TARGET=$(get_abi_CTARGET)" |
| "-DCMAKE_CXX_COMPILER_TARGET=$(get_abi_CTARGET)" |
| "-DLLVM_ENABLE_RUNTIMES=libcxxabi;libcxx" |
| "-DLIBCXX_CXX_ABI=${cxxabi}" |
| "-DLIBCXXABI_USE_LLVM_UNWINDER=$(usex libunwind)" |
| "-DLIBCXXABI_LIBDIR_SUFFIX=${libdir#lib}" |
| "-DLIBCXXABI_ENABLE_SHARED=ON" |
| "-DLIBCXXABI_ENABLE_STATIC=$(usex static-libs)" |
| "-DLIBCXXABI_INCLUDE_TESTS=OFF" |
| "-DLIBCXXABI_USE_COMPILER_RT=$(usex compiler-rt)" |
| ) |
| if use msan; then |
| mycmakeargs+=( |
| "-DLLVM_USE_SANITIZER=Memory" |
| ) |
| fi |
| |
| if is_baremetal_abi; then |
| # Options for baremetal toolchains e.g. armv7m-cros-eabi. |
| # Disable stack allocation and features like posix_memalign. |
| append-cppflags "-D_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION" |
| mycmakeargs+=( |
| "-DCMAKE_POSITION_INDEPENDENT_CODE=OFF" |
| "-DLIBCXXABI_ENABLE_SHARED=OFF" |
| "-DLIBCXXABI_BAREMETAL=ON" |
| "-DLIBCXXABI_SILENT_TERMINATE=ON" |
| "-DLIBCXXABI_NON_DEMANGLING_TERMINATE=ON" |
| "-DLIBCXXABI_ENABLE_THREADS=OFF" |
| "-DLIBCXX_ENABLE_SHARED=OFF" |
| "-DLIBCXX_ENABLE_RANDOM_DEVICE=OFF" |
| "-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF" |
| "-DLIBCXX_ENABLE_LOCALIZATION=OFF" |
| "-DLIBCXX_ENABLE_UNICODE=OFF" |
| "-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF" |
| "-DLIBCXX_ENABLE_FILESYSTEM=OFF" |
| "-DLIBCXX_ENABLE_THREADS=OFF" |
| "-DLIBCXX_ENABLE_MONOTONIC_CLOCK=OFF" |
| "-DLIBCXX_ENABLE_INCOMPLETE_FEATURES=OFF" |
| ) |
| fi |
| |
| cmake-utils_src_configure |
| } |
| |
| # Usage: deps |
| gen_ldscript() { |
| local output_format |
| # shellcheck disable=SC2086 |
| 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=$(usex libcxxabi "libc++abi.a" "$(usex libcxxrt "libcxxrt.a" "libsupc++.a")") |
| |
| # Move it first. |
| mv "${ED}/${PREFIX}/${libdir}/libc++.a" "${ED}/${PREFIX}/${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} $(usex libunwind libunwind.a libgcc_eh.a)" |
| # On Linux/glibc it does not link without libpthread or libdl. It is |
| # fine on FreeBSD. |
| use elibc_glibc && ! is_baremetal_abi && deps+=" libpthread.a libdl.a" |
| |
| gen_ldscript "${deps}" > "${ED}/${PREFIX}/${libdir}/libc++.a" || die |
| } |
| |
| gen_shared_ldscript() { |
| local libdir=$(get_libdir) |
| # libsupc++ doesn't have a shared version |
| local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "$(usex libcxxrt "libcxxrt.so" "libsupc++.a")") |
| mv "${ED}/${PREFIX}/${libdir}/libc++.so" "${ED}/${PREFIX}/${libdir}/libc++_shared.so" || die |
| local deps="libc++_shared.so ${cxxabi_lib} $(usex compiler-rt '' $(usex libunwind libunwind.so libgcc_s.so))" |
| |
| gen_ldscript "${deps}" > "${ED}/${PREFIX}/${libdir}/libc++.so" || die |
| } |
| |
| multilib_src_install() { |
| cmake-utils_src_install |
| is_baremetal_abi || gen_shared_ldscript |
| use static-libs && gen_static_ldscript |
| } |
| |
| multilib_src_install_all() { |
| if [[ ${CATEGORY} == cross-* ]]; then |
| rm -r "${ED}/usr/share/doc" |
| fi |
| } |