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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
PYTHON_COMPAT=( python3_{6..9} )
inherit check-reqs cmake flag-o-matic llvm llvm.org python-any-r1
DESCRIPTION="Compiler runtime libraries for clang (sanitizers & xray)"
HOMEPAGE="https://llvm.org/"
LLVM_COMPONENTS=( compiler-rt )
LLVM_TEST_COMPONENTS=( llvm/lib/Testing/Support llvm/utils/unittest )
llvm.org_set_globals
LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
SLOT="$(ver_cut 1-3)"
KEYWORDS="amd64 arm arm64 ppc64 ~riscv x86 ~amd64-linux ~ppc-macos ~x64-macos"
IUSE="+clang +libfuzzer +profile +sanitize test +xray elibc_glibc"
# FIXME: libfuzzer does not enable all its necessary dependencies
REQUIRED_USE="libfuzzer? ( || ( sanitize xray ) )"
RESTRICT="!test? ( test ) !clang? ( test )"
CLANG_SLOT=${SLOT%%.*}
# llvm-6 for new lit options
DEPEND="
>=sys-devel/llvm-6"
BDEPEND="
>=dev-util/cmake-3.16
clang? ( sys-devel/clang )
elibc_glibc? ( net-libs/libtirpc )
test? (
!<sys-apps/sandbox-2.13
$(python_gen_any_dep ">=dev-python/lit-5[\${PYTHON_USEDEP}]")
=sys-devel/clang-${PV%_*}*:${CLANG_SLOT}
sys-libs/compiler-rt:${SLOT} )
${PYTHON_DEPS}"
PATCHES=(
"${FILESDIR}/9999/compiler-rt-prefix-paths.patch"
)
python_check_deps() {
use test || return 0
has_version "dev-python/lit[${PYTHON_USEDEP}]"
}
check_space() {
if use test; then
local CHECKREQS_DISK_BUILD=11G
check-reqs_pkg_pretend
fi
}
pkg_pretend() {
check_space
}
pkg_setup() {
check_space
llvm_pkg_setup
python-any-r1_pkg_setup
}
src_prepare() {
sed -i -e 's:-Werror::' lib/tsan/go/buildgo.sh || die
llvm.org_src_prepare
}
src_configure() {
# pre-set since we need to pass it to cmake
BUILD_DIR=${WORKDIR}/compiler-rt_build
if use clang; then
local -x CC=${CHOST}-clang
local -x CXX=${CHOST}-clang++
strip-unsupported-flags
fi
local mycmakeargs=(
-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${SLOT}"
# use a build dir structure consistent with install
# this makes it possible to easily deploy test-friendly clang
-DCOMPILER_RT_OUTPUT_DIR="${BUILD_DIR}/lib/clang/${SLOT}"
-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
# builtins & crt installed by sys-libs/compiler-rt
-DCOMPILER_RT_BUILD_BUILTINS=OFF
-DCOMPILER_RT_BUILD_CRT=OFF
-DCOMPILER_RT_BUILD_LIBFUZZER=$(usex libfuzzer)
-DCOMPILER_RT_BUILD_PROFILE=$(usex profile)
-DCOMPILER_RT_BUILD_SANITIZERS=$(usex sanitize)
-DCOMPILER_RT_BUILD_XRAY=$(usex xray)
-DPython3_EXECUTABLE="${PYTHON}"
)
if use test; then
mycmakeargs+=(
-DLLVM_MAIN_SRC_DIR="${WORKDIR}/llvm"
-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
-DLLVM_LIT_ARGS="$(get_lit_flags)"
# they are created during src_test()
-DCOMPILER_RT_TEST_COMPILER="${BUILD_DIR}/lib/llvm/${CLANG_SLOT}/bin/clang"
-DCOMPILER_RT_TEST_CXX_COMPILER="${BUILD_DIR}/lib/llvm/${CLANG_SLOT}/bin/clang++"
)
# same flags are passed for build & tests, so we need to strip
# them down to a subset supported by clang
CC=${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang \
CXX=${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang++ \
strip-unsupported-flags
fi
if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
mycmakeargs+=(
# setting -isysroot is disabled with compiler-rt-prefix-paths.patch
# this allows adding arm64 support using SDK in EPREFIX
-DDARWIN_macosx_CACHED_SYSROOT="${EPREFIX}/MacOSX.sdk"
# Set version based on the SDK in EPREFIX
# This disables i386 for SDK >= 10.15
# Will error while building tsan if SDK < 10.12
-DDARWIN_macosx_OVERRIDE_SDK_VERSION="$(realpath ${EPREFIX}/MacOSX.sdk | sed -e 's/.*MacOSX\(.*\)\.sdk/\1/')"
# Use our libtool instead of looking it up with xcrun
-DCMAKE_LIBTOOL="${EPREFIX}/usr/bin/${CHOST}-libtool"
)
fi
cmake_src_configure
if use test; then
local sys_dir=( "${EPREFIX}"/usr/lib/clang/${SLOT}/lib/* )
[[ -e ${sys_dir} ]] || die "Unable to find ${sys_dir}"
[[ ${#sys_dir[@]} -eq 1 ]] || die "Non-deterministic compiler-rt install: ${sys_dir[*]}"
# copy clang over since resource_dir is located relatively to binary
# therefore, we can put our new libraries in it
mkdir -p "${BUILD_DIR}"/lib/{llvm/${CLANG_SLOT}/{bin,$(get_libdir)},clang/${SLOT}/include} || die
cp "${EPREFIX}"/usr/lib/llvm/${CLANG_SLOT}/bin/clang{,++} \
"${BUILD_DIR}"/lib/llvm/${CLANG_SLOT}/bin/ || die
cp "${EPREFIX}"/usr/lib/clang/${SLOT}/include/*.h \
"${BUILD_DIR}"/lib/clang/${SLOT}/include/ || die
cp "${sys_dir}"/*builtins*.a \
"${BUILD_DIR}/lib/clang/${SLOT}/lib/${sys_dir##*/}/" || die
# we also need LLVMgold.so for gold-based tests
if [[ -f ${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/$(get_libdir)/LLVMgold.so ]]; then
ln -s "${EPREFIX}"/usr/lib/llvm/${CLANG_SLOT}/$(get_libdir)/LLVMgold.so \
"${BUILD_DIR}"/lib/llvm/${CLANG_SLOT}/$(get_libdir)/ || die
fi
fi
}
src_test() {
# respect TMPDIR!
local -x LIT_PRESERVES_TMP=1
# disable sandbox to have it stop clobbering LD_PRELOAD
local -x SANDBOX_ON=0
# wipe LD_PRELOAD to make ASAN happy
local -x LD_PRELOAD=
cmake_build check-all
}
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