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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_{7..9} )
inherit cmake llvm llvm.org multilib multilib-minimal \
python-single-r1 toolchain-funcs
DESCRIPTION="C language family frontend for LLVM"
HOMEPAGE="https://llvm.org/"
LLVM_COMPONENTS=( clang clang-tools-extra )
LLVM_MANPAGES=pregenerated
LLVM_TEST_COMPONENTS=(
llvm/lib/Testing/Support
llvm/utils/{lit,llvm-lit,unittest}
)
LLVM_PATCHSET=10.0.1-1
llvm.org_set_globals
# Keep in sync with sys-devel/llvm
ALL_LLVM_EXPERIMENTAL_TARGETS=( ARC AVR )
ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Lanai Mips MSP430
NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore
"${ALL_LLVM_EXPERIMENTAL_TARGETS[@]}" )
ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
# MSVCSetupApi.h: MIT
# sorttable.js: MIT
LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA MIT"
SLOT="$(ver_cut 1)"
KEYWORDS="amd64 arm arm64 ppc64 x86 ~amd64-linux"
IUSE="debug default-compiler-rt default-libcxx default-lld doc
+static-analyzer test xml kernel_FreeBSD ${ALL_LLVM_TARGETS[*]}"
REQUIRED_USE="${PYTHON_REQUIRED_USE}
|| ( ${ALL_LLVM_TARGETS[*]} )"
RESTRICT="!test? ( test )"
RDEPEND="
~sys-devel/llvm-${PV}:${SLOT}=[debug=,${MULTILIB_USEDEP}]
static-analyzer? ( dev-lang/perl:* )
xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
${PYTHON_DEPS}"
for x in "${ALL_LLVM_TARGETS[@]}"; do
RDEPEND+="
${x}? ( ~sys-devel/llvm-${PV}:${SLOT}[${x}] )"
done
unset x
DEPEND="${RDEPEND}"
BDEPEND="
doc? ( dev-python/sphinx )
xml? ( virtual/pkgconfig )
${PYTHON_DEPS}"
PDEPEND="
sys-devel/clang-common
~sys-devel/clang-runtime-${PV}
default-compiler-rt? ( =sys-libs/compiler-rt-${PV%_*}* )
default-libcxx? ( >=sys-libs/libcxx-${PV} )
default-lld? ( sys-devel/lld )"
# Multilib notes:
# 1. ABI_* flags control ABIs libclang* is built for only.
# 2. clang is always capable of compiling code for all ABIs for enabled
# target. However, you will need appropriate crt* files (installed
# e.g. by sys-devel/gcc and sys-libs/glibc).
# 3. ${CHOST}-clang wrappers are always installed for all ABIs included
# in the current profile (i.e. alike supported by sys-devel/gcc).
#
# Therefore: use sys-devel/clang[${MULTILIB_USEDEP}] only if you need
# multilib clang* libraries (not runtime, not wrappers).
pkg_setup() {
LLVM_MAX_SLOT=${SLOT} llvm_pkg_setup
python-single-r1_pkg_setup
}
src_prepare() {
# create extra parent dir for relative CLANG_RESOURCE_DIR access
mkdir -p x/y || die
BUILD_DIR=${WORKDIR}/x/y/clang
llvm.org_src_prepare
mv ../clang-tools-extra tools/extra || die
}
check_distribution_components() {
if [[ ${CMAKE_MAKEFILE_GENERATOR} == ninja ]]; then
local all_targets=() my_targets=() l
cd "${BUILD_DIR}" || die
while read -r l; do
if [[ ${l} == install-*-stripped:* ]]; then
l=${l#install-}
l=${l%%-stripped*}
case ${l} in
# meta-targets
clang-libraries|distribution)
continue
;;
# tools
clang|clangd|clang-*)
;;
# static libraries
clang*|findAllSymbols)
continue
;;
# headers for clang-tidy static library
clang-tidy-headers)
continue
;;
# conditional to USE=doc
docs-clang-html|docs-clang-tools-html)
use doc || continue
;;
esac
all_targets+=( "${l}" )
fi
done < <(ninja -t targets all)
while read -r l; do
my_targets+=( "${l}" )
done < <(get_distribution_components $"\n")
local add=() remove=()
for l in "${all_targets[@]}"; do
if ! has "${l}" "${my_targets[@]}"; then
add+=( "${l}" )
fi
done
for l in "${my_targets[@]}"; do
if ! has "${l}" "${all_targets[@]}"; then
remove+=( "${l}" )
fi
done
if [[ ${#add[@]} -gt 0 || ${#remove[@]} -gt 0 ]]; then
eqawarn "get_distribution_components() is outdated!"
eqawarn " Add: ${add[*]}"
eqawarn "Remove: ${remove[*]}"
fi
cd - >/dev/null || die
fi
}
get_distribution_components() {
local sep=${1-;}
local out=(
# common stuff
clang-cmake-exports
clang-headers
clang-resource-headers
libclang-headers
# libs
clang-cpp
libclang
)
if multilib_is_native_abi; then
out+=(
# common stuff
bash-autocomplete
libclang-python-bindings
# tools
c-index-test
clang
clang-format
clang-import-test
clang-offload-bundler
clang-offload-wrapper
clang-refactor
clang-rename
clang-scan-deps
diagtool
hmaptool
# extra tools
clang-apply-replacements
clang-change-namespace
clang-doc
clang-include-fixer
clang-move
clang-query
clang-reorder-fields
clang-tidy
clangd
find-all-symbols
modularize
pp-trace
)
if llvm_are_manpages_built; then
out+=(
# manpages
docs-clang-man
docs-clang-tools-man
)
fi
use doc && out+=(
docs-clang-html
docs-clang-tools-html
)
use static-analyzer && out+=(
clang-check
clang-extdef-mapping
scan-build
scan-view
)
fi
printf "%s${sep}" "${out[@]}"
}
multilib_src_configure() {
local llvm_version=$(llvm-config --version) || die
local clang_version=$(ver_cut 1-3 "${llvm_version}")
local mycmakeargs=(
-DLLVM_CMAKE_PATH="${EPREFIX}/usr/lib/llvm/${SLOT}/$(get_libdir)/cmake/llvm"
-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${SLOT}"
-DCMAKE_INSTALL_MANDIR="${EPREFIX}/usr/lib/llvm/${SLOT}/share/man"
# relative to bindir
-DCLANG_RESOURCE_DIR="../../../../lib/clang/${clang_version}"
-DBUILD_SHARED_LIBS=OFF
-DCLANG_LINK_CLANG_DYLIB=ON
-DLLVM_DISTRIBUTION_COMPONENTS=$(get_distribution_components)
-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
-DLLVM_BUILD_TESTS=$(usex test)
# these are not propagated reliably, so redefine them
-DLLVM_ENABLE_EH=ON
-DLLVM_ENABLE_RTTI=ON
-DCMAKE_DISABLE_FIND_PACKAGE_LibXml2=$(usex !xml)
# libgomp support fails to find headers without explicit -I
# furthermore, it provides only syntax checking
-DCLANG_DEFAULT_OPENMP_RUNTIME=libomp
# override default stdlib and rtlib
-DCLANG_DEFAULT_CXX_STDLIB=$(usex default-libcxx libc++ "")
-DCLANG_DEFAULT_RTLIB=$(usex default-compiler-rt compiler-rt "")
-DCLANG_DEFAULT_LINKER=$(usex default-lld lld "")
-DCLANG_ENABLE_ARCMT=$(usex static-analyzer)
-DCLANG_ENABLE_STATIC_ANALYZER=$(usex static-analyzer)
)
use test && mycmakeargs+=(
-DLLVM_MAIN_SRC_DIR="${WORKDIR}/llvm"
-DLLVM_LIT_ARGS="$(get_lit_flags)"
)
if multilib_is_native_abi; then
local build_docs=OFF
if llvm_are_manpages_built; then
build_docs=ON
mycmakeargs+=(
-DLLVM_BUILD_DOCS=ON
-DLLVM_ENABLE_SPHINX=ON
-DCLANG_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/html"
-DCLANG-TOOLS_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/tools-extra"
-DSPHINX_WARNINGS_AS_ERRORS=OFF
)
fi
mycmakeargs+=(
# normally copied from LLVM_INCLUDE_DOCS but the latter
# is lacking value in stand-alone builds
-DCLANG_INCLUDE_DOCS=${build_docs}
-DCLANG_TOOLS_EXTRA_INCLUDE_DOCS=${build_docs}
)
else
mycmakeargs+=(
-DLLVM_TOOL_CLANG_TOOLS_EXTRA_BUILD=OFF
)
fi
if [[ -n ${EPREFIX} ]]; then
mycmakeargs+=(
-DGCC_INSTALL_PREFIX="${EPREFIX}/usr"
)
fi
if tc-is-cross-compiler; then
[[ -x "/usr/bin/clang-tblgen" ]] \
|| die "/usr/bin/clang-tblgen not found or usable"
mycmakeargs+=(
-DCMAKE_CROSSCOMPILING=ON
-DCLANG_TABLEGEN=/usr/bin/clang-tblgen
)
fi
# LLVM can have very high memory consumption while linking,
# exhausting the limit on 32-bit linker executable
use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"
# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
cmake_src_configure
multilib_is_native_abi && check_distribution_components
}
multilib_src_compile() {
cmake_src_compile
# provide a symlink for tests
if [[ ! -L ${WORKDIR}/lib/clang ]]; then
mkdir -p "${WORKDIR}"/lib || die
ln -s "${BUILD_DIR}/$(get_libdir)/clang" "${WORKDIR}"/lib/clang || die
fi
}
multilib_src_test() {
# respect TMPDIR!
local -x LIT_PRESERVES_TMP=1
cmake_build check-clang
multilib_is_native_abi &&
cmake_build check-clang-tools check-clangd
}
src_install() {
MULTILIB_WRAPPED_HEADERS=(
/usr/include/clang/Config/config.h
)
multilib-minimal_src_install
# Move runtime headers to /usr/lib/clang, where they belong
mv "${ED}"/usr/include/clangrt "${ED}"/usr/lib/clang || die
# move (remaining) wrapped headers back
mv "${ED}"/usr/include "${ED}"/usr/lib/llvm/${SLOT}/include || die
# Apply CHOST and version suffix to clang tools
# note: we use two version components here (vs 3 in runtime path)
local llvm_version=$(llvm-config --version) || die
local clang_version=$(ver_cut 1 "${llvm_version}")
local clang_full_version=$(ver_cut 1-3 "${llvm_version}")
local clang_tools=( clang clang++ clang-cl clang-cpp )
local abi i
# cmake gives us:
# - clang-X
# - clang -> clang-X
# - clang++, clang-cl, clang-cpp -> clang
# we want to have:
# - clang-X
# - clang++-X, clang-cl-X, clang-cpp-X -> clang-X
# - clang, clang++, clang-cl, clang-cpp -> clang*-X
# also in CHOST variant
for i in "${clang_tools[@]:1}"; do
rm "${ED}/usr/lib/llvm/${SLOT}/bin/${i}" || die
dosym "clang-${clang_version}" "/usr/lib/llvm/${SLOT}/bin/${i}-${clang_version}"
dosym "${i}-${clang_version}" "/usr/lib/llvm/${SLOT}/bin/${i}"
done
# now create target symlinks for all supported ABIs
for abi in $(get_all_abis); do
local abi_chost=$(get_abi_CHOST "${abi}")
for i in "${clang_tools[@]}"; do
dosym "${i}-${clang_version}" \
"/usr/lib/llvm/${SLOT}/bin/${abi_chost}-${i}-${clang_version}"
dosym "${abi_chost}-${i}-${clang_version}" \
"/usr/lib/llvm/${SLOT}/bin/${abi_chost}-${i}"
done
done
# Remove unnecessary headers on FreeBSD, bug #417171
if use kernel_FreeBSD; then
rm "${ED}"/usr/lib/clang/${clang_full_version}/include/{std,float,iso,limits,tgmath,varargs}*.h || die
fi
}
multilib_src_install() {
DESTDIR=${D} cmake_build install-distribution
# move headers to /usr/include for wrapping & ABI mismatch checks
# (also drop the version suffix from runtime headers)
rm -rf "${ED}"/usr/include || die
mv "${ED}"/usr/lib/llvm/${SLOT}/include "${ED}"/usr/include || die
mv "${ED}"/usr/lib/llvm/${SLOT}/$(get_libdir)/clang "${ED}"/usr/include/clangrt || die
}
multilib_src_install_all() {
python_fix_shebang "${ED}"
if use static-analyzer; then
python_optimize "${ED}"/usr/lib/llvm/${SLOT}/share/scan-view
fi
docompress "/usr/lib/llvm/${SLOT}/share/man"
llvm_install_manpages
# match 'html' non-compression
use doc && docompress -x "/usr/share/doc/${PF}/tools-extra"
# +x for some reason; TODO: investigate
use static-analyzer && fperms a-x "/usr/lib/llvm/${SLOT}/share/man/man1/scan-build.1"
}
pkg_postinst() {
if [[ -z ${ROOT} && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
eselect compiler-shadow update all
fi
elog "You can find additional utility scripts in:"
elog " ${EROOT}/usr/lib/llvm/${SLOT}/share/clang"
elog "Some of them are vim integration scripts (with instructions inside)."
elog "The run-clang-tidy.py script requires the following additional package:"
elog " dev-python/pyyaml"
}
pkg_postrm() {
if [[ -z ${ROOT} && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
eselect compiler-shadow clean all
fi
}