| # Copyright 1999-2017 Gentoo Foundation |
| # Distributed under the terms of the GNU General Public License v2 |
| |
| EAPI=7 |
| |
| PYTHON_COMPAT=( python3_{6..9} ) |
| |
| CROS_WORKON_REPO="${CROS_GIT_HOST_URL}" |
| CROS_WORKON_PROJECT="external/github.com/llvm/llvm-project" |
| CROS_WORKON_LOCALNAME="llvm-project" |
| CROS_WORKON_MANUAL_UPREV=1 |
| |
| inherit cros-fuzzer cros-sanitizers cros-constants cmake-multilib cmake-utils git-2 cros-llvm cros-workon python-single-r1 |
| |
| DESCRIPTION="C++ runtime stack unwinder from LLVM" |
| HOMEPAGE="https://github.com/llvm-mirror/libunwind" |
| SRC_URI="" |
| EGIT_REPO_URI="${CROS_GIT_HOST_URL}/external/github.com/llvm/llvm-project |
| ${CROS_GIT_HOST_URL}/external/github.com/llvm/llvm-project" |
| EGIT_BRANCH=main |
| |
| LLVM_HASH="2916b99182752b1aece8cc4479d8d6a20b5e02da" # r484197 |
| LLVM_NEXT_HASH="98f5a340975bc00197c57e39eb4ca26e2da0e8a2" # r496208 |
| |
| LICENSE="|| ( UoI-NCSA MIT )" |
| SLOT="0" |
| KEYWORDS="*" |
| if [[ "${PV}" == "9999" ]]; then |
| KEYWORDS="~*" |
| fi |
| IUSE="cros_host debug llvm-next llvm-tot +static-libs +shared-libs +synth_libgcc +compiler-rt continue-on-patch-failure" |
| RDEPEND="!${CATEGORY}/libunwind" |
| |
| DEPEND=" |
| sys-kernel/linux-headers |
| sys-libs/glibc |
| ${RDEPEND} |
| " |
| |
| if [[ "${CATEGORY}" == cross-*-linux* ]]; then |
| DEPEND+=" |
| ${CATEGORY}/linux-headers |
| ${CATEGORY}/glibc |
| " |
| fi |
| |
| BDEPEND="sys-devel/llvm" |
| |
| pkg_setup() { |
| # Setup llvm toolchain for cross-compilation |
| setup_cross_toolchain |
| export CMAKE_USE_DIR="${S}/runtimes" |
| } |
| |
| src_unpack() { |
| if use llvm-next || use llvm-tot; then |
| export EGIT_COMMIT="${LLVM_NEXT_HASH}" |
| else |
| export EGIT_COMMIT="${LLVM_HASH}" |
| fi |
| if [[ "${PV}" != "9999" ]]; then |
| CROS_WORKON_COMMIT="${EGIT_COMMIT}" |
| fi |
| cros-workon_src_unpack |
| } |
| |
| src_prepare() { |
| python_setup |
| 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 |
| cmake-utils_src_prepare |
| } |
| |
| should_enable_asserts() { |
| if is_baremetal_abi; then |
| echo no |
| elif use debug || use llvm-tot; then |
| echo yes |
| else |
| echo no |
| fi |
| } |
| |
| multilib_src_configure() { |
| # Disable sanitization of llvm-libunwind (b/193934733). |
| use_sanitizers && filter_sanitizers |
| |
| # Filter default portage flags to allow unwinding. |
| cros_enable_cxx_exceptions |
| append-cppflags "-D_LIBUNWIND_USE_DLADDR=0" |
| if [[ ${CATEGORY} == cross-armv7a* ]] ; then |
| # Allow targeting non-neon targets for armv7a. |
| append-flags -mfpu=vfpv3 |
| |
| # cross-armv7 builds fail due a to libgcc_eh.a bootstrap bug |
| # due to a global variable used for stack canary memory. |
| # https://bugzilla.redhat.com/show_bug.cgi?id=708452 |
| # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102352 |
| # TODO(toolchain): Revisit this when the above GCC bug is |
| # fixed or we have glibc arm clang build support. |
| append-flags -fno-stack-protector |
| fi |
| |
| local libdir=$(get_libdir) |
| local mycmakeargs=( |
| "${mycmakeargs[@]}" |
| "-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY" |
| "-DCMAKE_POSITION_INDEPENDENT_CODE=ON" |
| "-DLLVM_LIBDIR_SUFFIX=${libdir#lib}" |
| "-DLIBUNWIND_ENABLE_ASSERTIONS=$(should_enable_asserts)" |
| "-DLIBUNWIND_ENABLE_STATIC=$(usex static-libs)" |
| "-DLIBUNWIND_ENABLE_SHARED=OFF" |
| "-DLIBUNWIND_ENABLE_THREADS=OFF" |
| "-DLIBUNWIND_ENABLE_CROSS_UNWINDING=OFF" |
| "-DLIBUNWIND_USE_COMPILER_RT=$(usex compiler-rt)" |
| "-DLIBUNWIND_TARGET_TRIPLE=$(get_abi_CTARGET)" |
| "-DCMAKE_INSTALL_PREFIX=${PREFIX}" |
| "-DLLVM_ENABLE_RUNTIMES=libunwind" |
| # Avoid old libstdc++ errors when bootstrapping. |
| "-DLLVM_ENABLE_LIBCXX=ON" |
| "-DLIBUNWIND_HAS_COMMENT_LIB_PRAGMA=OFF" |
| "-DLIBUNWIND_HAS_DL_LIB=OFF" |
| "-DLIBUNWIND_HAS_PTHREAD_LIB=OFF" |
| ) |
| |
| if is_baremetal_abi; then |
| # Options for baremetal toolchains e.g. armv7m-cros-eabi. |
| append-flags -Oz # Optimize for smallest size. |
| mycmakeargs+=( |
| "-DCMAKE_POSITION_INDEPENDENT_CODE=OFF" |
| "-DLIBUNWIND_IS_BAREMETAL=ON" |
| "-DLIBUNWIND_REMEMBER_HEAP_ALLOC=ON" |
| "-DLLVM_ENABLE_LTO=Full" |
| ) |
| fi |
| |
| cmake-utils_src_configure |
| } |
| |
| multilib_src_install_all() { |
| # Remove files that are installed by sys-libs/llvm-libunwind |
| # to avoid collision when installing cross-${TARGET}/llvm-libunwind. |
| if [[ ${CATEGORY} == cross-* ]]; then |
| rm -rf "${ED}"/usr/share || die |
| fi |
| |
| # Install headers. |
| insinto "${PREFIX}"/include |
| doins -r "${S}"/libunwind/include/. |
| } |
| |
| multilib_src_install() { |
| cmake-utils_src_install |
| if is_baremetal_abi; then |
| return |
| fi |
| |
| # Generate libunwind.so or libgcc_s.so. |
| local myabi=$(get_abi_CTARGET) |
| if [[ ${myabi} == *armv7a* ]]; then |
| LIBGCC_ARCH="armhf" |
| elif [[ ${myabi} == *aarch64* ]]; then |
| LIBGCC_ARCH="aarch64" |
| elif [[ ${myabi} =~ ^i[0-9]86 ]]; then |
| LIBGCC_ARCH="i386" |
| elif [[ ${myabi} == *x86_64* ]] ; then |
| LIBGCC_ARCH="x86_64" |
| else |
| echo "unsupported arch" && die |
| fi |
| |
| local COMPILER_RT_BUILTINS=$($(tc-getCC) -print-libgcc-file-name -rtlib=compiler-rt) |
| local my_installdir="${D%/}${PREFIX}/$(get_libdir)" |
| local out_file soname |
| |
| if use synth_libgcc; then |
| out_file=libgcc_s.so.1 |
| soname=libgcc_s.so.1 |
| else |
| out_file=libunwind.so.1.0 |
| soname=libunwind.so.1 |
| fi |
| |
| echo "Creating ${out_file} using libunwind.a + compiler-rt". |
| # Ignore split word warnings, we need them for flags. |
| # shellcheck disable=SC2086 |
| $(tc-getCC) -o "${my_installdir}"/"${out_file}" \ |
| ${CFLAGS} \ |
| ${LDFLAGS} \ |
| -shared \ |
| -nostdlib \ |
| -Wl,--whole-archive \ |
| -Wl,--version-script,"${FILESDIR}/version-scripts/gcc_s-${LIBGCC_ARCH}.ver" \ |
| -Wl,-soname,"${soname}" \ |
| "${COMPILER_RT_BUILTINS}" \ |
| "${my_installdir}"/libunwind.a \ |
| -Wl,--no-whole-archive \ |
| -lm \ |
| -lc \ |
| || die "Failed to create ${out_file}". |
| |
| # Point libunwind.so.1, libunwind_shared.so and libunwind.so to libunwind.so.1.0. |
| ln -s libunwind.so.1.0 "${my_installdir}"/libunwind.so.1 || die |
| ln -s libunwind.so.1 "${my_installdir}"/libunwind.so || die |
| ln -s libunwind.so "${my_installdir}"/libunwind_shared.so || die |
| |
| # Generate libgcc{,_eh,_s} if requested. |
| if use synth_libgcc; then |
| # We already created libgcc_s.so.1 if we are here. |
| # Point libunwind.so.1.0 and libgcc_s.so to it. |
| # Also make sure that libgcc.a and libgcc_eh.a point to compiler-rt/libunwind. |
| ln -s libgcc_s.so.1 "${my_installdir}"/libunwind.so.1.0 || die |
| ln -s libgcc_s.so.1 "${my_installdir}"/libgcc_s.so || die |
| ln -s libunwind.a "${my_installdir}"/libgcc_eh.a || die |
| cp "${COMPILER_RT_BUILTINS}" "${my_installdir}"/libgcc.a || die |
| fi |
| } |
