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# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
EAPI=6
: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
# (needed due to CMAKE_BUILD_TYPE != Gentoo)
CMAKE_MIN_VERSION=3.7.0-r1
PYTHON_COMPAT=( python2_7 )
# TODO: fix unnecessary dep on Python upstream
inherit cmake-utils flag-o-matic llvm python-any-r1 toolchain-funcs
DESCRIPTION="Compiler runtime library for clang (built-in part)"
HOMEPAGE="https://llvm.org/"
SRC_URI="https://releases.llvm.org/${PV/_//}/${P/_/}.src.tar.xz"
LICENSE="|| ( UoI-NCSA MIT )"
SLOT="${PV%_*}"
KEYWORDS="amd64 ~arm64 x86"
IUSE="+clang test"
CLANG_SLOT=${SLOT%%.*}
RDEPEND="!=sys-libs/compiler-rt-${SLOT}*:0"
# llvm-4 needed for --cmakedir
DEPEND="
>=sys-devel/llvm-4
clang? ( sys-devel/clang )
test? ( =sys-devel/clang-${PV%_*}*:${CLANG_SLOT} )
${PYTHON_DEPS}"
S=${WORKDIR}/${P/_/}.src
# least intrusive of all
CMAKE_BUILD_TYPE=RelWithDebInfo
pkg_pretend() {
if ! use clang && ! tc-is-clang; then
ewarn "Building using a compiler other than clang may result in broken atomics"
ewarn "library. Enable USE=clang unless you have a very good reason not to."
fi
}
pkg_setup() {
llvm_pkg_setup
python-any-r1_pkg_setup
}
test_compiler() {
$(tc-getCC) ${CFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c - \
<<<'int main() { return 0; }' &>/dev/null
}
src_configure() {
# pre-set since we need to pass it to cmake
BUILD_DIR=${WORKDIR}/${P}_build
local nolib_flags=( -nodefaultlibs -lc )
if use clang; then
local -x CC=${CHOST}-clang
local -x CXX=${CHOST}-clang++
# ensure we can use clang before installing compiler-rt
local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
strip-unsupported-flags
elif ! test_compiler; then
if test_compiler "${nolib_flags[@]}"; then
local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
fi
fi
local mycmakeargs=(
-DCOMPILER_RT_INSTALL_PATH="${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/${SLOT}"
# currently lit covers only sanitizer tests
-DCOMPILER_RT_INCLUDE_TESTS=OFF
-DCOMPILER_RT_BUILD_SANITIZERS=OFF
-DCOMPILER_RT_BUILD_XRAY=OFF
)
cmake-utils_src_configure
}
src_test() {
# prepare a test compiler
# copy clang over since resource_dir is located relatively to binary
# therefore, we can put our new libraries in it
mkdir -p "${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/${SLOT}/include/" || die
# builtins are not converted to lit yet, so run them manually
local tests=() f
cd "${S}"/test/builtins/Unit || die
while read -r -d '' f; do
# ppc subdir is unmaintained and lacks proper guards
# (and ppc builtins do not seem to be used anyway)
[[ ${f} == ./ppc/* ]] && continue
# these are special
[[ ${f} == ./cpu_model_test.c ]] && continue
[[ ${f} == ./gcc_personality_test.c ]] && continue
# unsupported
[[ ${f} == ./trampoline_setup_test.c ]] && continue
tests+=( "${f%.c}" )
done < <(find -name '*.c' -print0)
{
echo "check: ${tests[*]/#/check-}" &&
echo ".PHONY: check ${tests[*]/#/check-}" &&
for f in "${tests[@]}"; do
echo "check-${f}: ${f}" &&
echo " ${f}"
done
} > Makefile || die
local ABI
for ABI in $(get_all_abis); do
# not supported at all at the moment
[[ ${ABI} == x32 ]] && continue
rm -f "${tests[@]}" || die
einfo "Running tests for ABI=${ABI}"
# use -k to run all tests even if some fail
emake -k \
CC="${BUILD_DIR}/lib/llvm/${CLANG_SLOT}/bin/clang" \
CFLAGS="$(get_abi_CFLAGS)" \
CPPFLAGS='-I../../../lib/builtins' \
LDFLAGS='-rtlib=compiler-rt' \
LDLIBS='-lm'
done
}
src_install() {
cmake-utils_src_install
# includes are mistakenly installed for all sanitizers and xray
rm -rf "${ED}"usr/lib/clang/*/include || die
}
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