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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 cmake flag-o-matic llvm llvm.org python-any-r1 toolchain-funcs
DESCRIPTION="Compiler runtime library for clang (built-in part)"
HOMEPAGE="https://llvm.org/"
LLVM_COMPONENTS=( compiler-rt )
llvm.org_set_globals
LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
SLOT="$(ver_cut 1-3)"
KEYWORDS="amd64 arm arm64 ppc64 x86 ~amd64-linux ~ppc-macos ~x64-macos"
IUSE="+clang test"
RESTRICT="!test? ( test ) !clang? ( test )"
CLANG_SLOT=${SLOT%%.*}
# llvm-6 for new lit options
DEPEND="
>=sys-devel/llvm-6"
BDEPEND="
clang? ( sys-devel/clang )
test? (
$(python_gen_any_dep ">=dev-python/lit-9.0.1[\${PYTHON_USEDEP}]")
=sys-devel/clang-${PV%_*}*:${CLANG_SLOT} )
${PYTHON_DEPS}"
python_check_deps() {
use test || return 0
has_version "dev-python/lit[${PYTHON_USEDEP}]"
}
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++
strip-unsupported-flags
# ensure we can use clang before installing compiler-rt
local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
elif ! test_compiler; then
if test_compiler "${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/${SLOT}"
-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
-DCOMPILER_RT_BUILD_LIBFUZZER=OFF
-DCOMPILER_RT_BUILD_PROFILE=OFF
-DCOMPILER_RT_BUILD_SANITIZERS=OFF
-DCOMPILER_RT_BUILD_XRAY=OFF
)
if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
mycmakeargs+=(
# disable use of SDK for the system itself
-DDARWIN_macosx_CACHED_SYSROOT=/
)
fi
if use test; then
mycmakeargs+=(
-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
-DLLVM_LIT_ARGS="$(get_lit_flags)"
-DCOMPILER_RT_TEST_COMPILER="${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang"
-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang++"
)
fi
cmake_src_configure
}
src_test() {
# respect TMPDIR!
local -x LIT_PRESERVES_TMP=1
cmake_build check-builtins
}
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