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206 lines
5.9 KiB
206 lines
5.9 KiB
# Copyright 1999-2021 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=7
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PYTHON_COMPAT=( python3_{8..10} )
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inherit check-reqs cmake flag-o-matic llvm llvm.org python-any-r1
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DESCRIPTION="Compiler runtime libraries for clang (sanitizers & xray)"
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HOMEPAGE="https://llvm.org/"
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LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
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SLOT="$(ver_cut 1-3)"
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KEYWORDS=""
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IUSE="+clang debug test elibc_glibc"
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# base targets
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IUSE+=" +libfuzzer +memprof +orc +profile +xray"
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# sanitizer targets, keep in sync with config-ix.cmake
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# NB: ubsan, scudo deliberately match two entries
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SANITIZER_FLAGS=(
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asan dfsan lsan msan hwasan tsan ubsan safestack cfi scudo
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shadowcallstack gwp-asan
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)
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IUSE+=" ${SANITIZER_FLAGS[@]/#/+}"
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REQUIRED_USE="
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|| ( ${SANITIZER_FLAGS[*]} libfuzzer orc profile xray )
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test? (
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cfi? ( ubsan )
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gwp-asan? ( scudo )
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)"
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RESTRICT="!test? ( test ) !clang? ( test )"
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CLANG_SLOT=${SLOT%%.*}
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# llvm-6 for new lit options
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DEPEND="
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>=sys-devel/llvm-6
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virtual/libcrypt"
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BDEPEND="
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>=dev-util/cmake-3.16
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clang? ( sys-devel/clang )
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elibc_glibc? ( net-libs/libtirpc )
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test? (
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!<sys-apps/sandbox-2.13
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$(python_gen_any_dep ">=dev-python/lit-5[\${PYTHON_USEDEP}]")
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=sys-devel/clang-${PV%_*}*:${CLANG_SLOT}
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sys-libs/compiler-rt:${SLOT}
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)
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${PYTHON_DEPS}"
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LLVM_COMPONENTS=( compiler-rt cmake )
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LLVM_TEST_COMPONENTS=( llvm/lib/Testing/Support llvm/utils/unittest )
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LLVM_PATCHSET=9999-1
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llvm.org_set_globals
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python_check_deps() {
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use test || return 0
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has_version "dev-python/lit[${PYTHON_USEDEP}]"
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}
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check_space() {
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if use test; then
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local CHECKREQS_DISK_BUILD=11G
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check-reqs_pkg_pretend
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fi
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}
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pkg_pretend() {
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check_space
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}
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pkg_setup() {
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check_space
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llvm_pkg_setup
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python-any-r1_pkg_setup
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}
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src_prepare() {
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sed -i -e 's:-Werror::' lib/tsan/go/buildgo.sh || die
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local flag
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for flag in "${SANITIZER_FLAGS[@]}"; do
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if ! use "${flag}"; then
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local cmake_flag=${flag/-/_}
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sed -i -e "/COMPILER_RT_HAS_${cmake_flag^^}/s:TRUE:FALSE:" \
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cmake/config-ix.cmake || die
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fi
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done
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# TODO: fix these tests to be skipped upstream
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if use asan && ! use profile; then
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rm test/asan/TestCases/asan_and_llvm_coverage_test.cpp || die
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fi
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if use ubsan && ! use cfi; then
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> test/cfi/CMakeLists.txt || die
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fi
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llvm.org_src_prepare
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}
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src_configure() {
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# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
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use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
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# pre-set since we need to pass it to cmake
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BUILD_DIR=${WORKDIR}/compiler-rt_build
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if use clang; then
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local -x CC=${CHOST}-clang
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local -x CXX=${CHOST}-clang++
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strip-unsupported-flags
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fi
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local flag want_sanitizer=OFF
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for flag in "${SANITIZER_FLAGS[@]}"; do
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if use "${flag}"; then
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want_sanitizer=ON
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break
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fi
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done
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local mycmakeargs=(
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-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${SLOT}"
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# use a build dir structure consistent with install
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# this makes it possible to easily deploy test-friendly clang
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-DCOMPILER_RT_OUTPUT_DIR="${BUILD_DIR}/lib/clang/${SLOT}"
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-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
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# builtins & crt installed by sys-libs/compiler-rt
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-DCOMPILER_RT_BUILD_BUILTINS=OFF
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-DCOMPILER_RT_BUILD_CRT=OFF
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-DCOMPILER_RT_BUILD_LIBFUZZER=$(usex libfuzzer)
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-DCOMPILER_RT_BUILD_MEMPROF=$(usex memprof)
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-DCOMPILER_RT_BUILD_ORC=$(usex orc)
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-DCOMPILER_RT_BUILD_PROFILE=$(usex profile)
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-DCOMPILER_RT_BUILD_SANITIZERS="${want_sanitizer}"
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-DCOMPILER_RT_BUILD_XRAY=$(usex xray)
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-DPython3_EXECUTABLE="${PYTHON}"
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)
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if use test; then
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mycmakeargs+=(
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-DLLVM_MAIN_SRC_DIR="${WORKDIR}/llvm"
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-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
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-DLLVM_LIT_ARGS="$(get_lit_flags)"
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# they are created during src_test()
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-DCOMPILER_RT_TEST_COMPILER="${BUILD_DIR}/lib/llvm/${CLANG_SLOT}/bin/clang"
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-DCOMPILER_RT_TEST_CXX_COMPILER="${BUILD_DIR}/lib/llvm/${CLANG_SLOT}/bin/clang++"
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)
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# same flags are passed for build & tests, so we need to strip
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# them down to a subset supported by clang
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CC=${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang \
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CXX=${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang++ \
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strip-unsupported-flags
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fi
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if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
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mycmakeargs+=(
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# setting -isysroot is disabled with compiler-rt-prefix-paths.patch
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# this allows adding arm64 support using SDK in EPREFIX
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-DDARWIN_macosx_CACHED_SYSROOT="${EPREFIX}/MacOSX.sdk"
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# Set version based on the SDK in EPREFIX
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# This disables i386 for SDK >= 10.15
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# Will error if has_use tsan and SDK < 10.12
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-DDARWIN_macosx_OVERRIDE_SDK_VERSION="$(realpath ${EPREFIX}/MacOSX.sdk | sed -e 's/.*MacOSX\(.*\)\.sdk/\1/')"
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# Use our libtool instead of looking it up with xcrun
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-DCMAKE_LIBTOOL="${EPREFIX}/usr/bin/${CHOST}-libtool"
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)
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fi
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cmake_src_configure
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if use test; then
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local sys_dir=( "${EPREFIX}"/usr/lib/clang/${SLOT}/lib/* )
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[[ -e ${sys_dir} ]] || die "Unable to find ${sys_dir}"
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[[ ${#sys_dir[@]} -eq 1 ]] || die "Non-deterministic compiler-rt install: ${sys_dir[*]}"
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# copy clang over since resource_dir is located relatively to binary
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# therefore, we can put our new libraries in it
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mkdir -p "${BUILD_DIR}"/lib/{llvm/${CLANG_SLOT}/{bin,$(get_libdir)},clang/${SLOT}/include} || die
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cp "${EPREFIX}"/usr/lib/llvm/${CLANG_SLOT}/bin/clang{,++} \
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"${BUILD_DIR}"/lib/llvm/${CLANG_SLOT}/bin/ || die
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cp "${EPREFIX}"/usr/lib/clang/${SLOT}/include/*.h \
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"${BUILD_DIR}"/lib/clang/${SLOT}/include/ || die
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cp "${sys_dir}"/*builtins*.a \
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"${BUILD_DIR}/lib/clang/${SLOT}/lib/${sys_dir##*/}/" || die
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# we also need LLVMgold.so for gold-based tests
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if [[ -f ${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/$(get_libdir)/LLVMgold.so ]]; then
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ln -s "${EPREFIX}"/usr/lib/llvm/${CLANG_SLOT}/$(get_libdir)/LLVMgold.so \
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"${BUILD_DIR}"/lib/llvm/${CLANG_SLOT}/$(get_libdir)/ || die
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fi
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fi
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}
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src_test() {
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# respect TMPDIR!
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local -x LIT_PRESERVES_TMP=1
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# disable sandbox to have it stop clobbering LD_PRELOAD
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local -x SANDBOX_ON=0
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# wipe LD_PRELOAD to make ASAN happy
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local -x LD_PRELOAD=
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cmake_build check-all
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}
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