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+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+
+inherit cmake llvm.org llvm-utils multilib multilib-minimal
+inherit prefix python-single-r1 toolchain-funcs
+
+DESCRIPTION="C language family frontend for LLVM"
+HOMEPAGE="https://llvm.org/"
+
+# MSVCSetupApi.h: MIT
+# sorttable.js: MIT
+
+LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA MIT"
+SLOT="${LLVM_MAJOR}/${LLVM_SOABI}"
+IUSE="+debug doc +extra ieee-long-double +pie +static-analyzer test xml"
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+RESTRICT="!test? ( test )"
+
+DEPEND="
+ ~sys-devel/llvm-${PV}:${LLVM_MAJOR}=[debug=,${MULTILIB_USEDEP}]
+ static-analyzer? ( dev-lang/perl:* )
+ xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
+"
+
+RDEPEND="
+ ${PYTHON_DEPS}
+ ${DEPEND}
+ >=sys-devel/clang-common-${PV}
+"
+BDEPEND="
+ ${PYTHON_DEPS}
+ test? ( ~sys-devel/lld-${PV} )
+ xml? ( virtual/pkgconfig )
+"
+PDEPEND="
+ ~sys-devel/clang-runtime-${PV}
+ sys-devel/clang-toolchain-symlinks:${LLVM_MAJOR}
+"
+
+LLVM_COMPONENTS=(
+ clang clang-tools-extra cmake
+ llvm/lib/Transforms/Hello
+)
+LLVM_MANPAGES=1
+LLVM_TEST_COMPONENTS=(
+ llvm/utils
+)
+LLVM_USE_TARGETS=llvm
+llvm.org_set_globals
+
+[[ -n ${LLVM_MANPAGE_DIST} ]] && BDEPEND+=" doc? ( "
+BDEPEND+="
+ $(python_gen_cond_dep '
+ dev-python/myst-parser[${PYTHON_USEDEP}]
+ dev-python/sphinx[${PYTHON_USEDEP}]
+ ')
+"
+[[ -n ${LLVM_MANPAGE_DIST} ]] && BDEPEND+=" ) "
+
+# 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).
+
+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
+
+ # add Gentoo Portage Prefix for Darwin (see prefix-dirs.patch)
+ eprefixify \
+ lib/Lex/InitHeaderSearch.cpp \
+ lib/Driver/ToolChains/Darwin.cpp || die
+
+ if ! use prefix-guest && [[ -n ${EPREFIX} ]]; then
+ sed -i "/LibDir.*Loader/s@return \"\/\"@return \"${EPREFIX}/\"@" lib/Driver/ToolChains/Linux.cpp || die
+ fi
+}
+
+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 ${l} in
+ # meta-targets
+ clang-libraries|distribution)
+ continue
+ ;;
+ # tools
+ clang|clangd|clang-*)
+ ;;
+ # static libraries
+ clang*|findAllSymbols)
+ continue
+ ;;
+ # conditional to USE=doc
+ docs-clang-html|docs-clang-tools-html)
+ use doc || continue
+ ;;
+ esac
+
+ all_targets+=( "${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
+
+ aarch64-resource-headers
+ arm-common-resource-headers
+ arm-resource-headers
+ core-resource-headers
+ cuda-resource-headers
+ hexagon-resource-headers
+ hip-resource-headers
+ hlsl-resource-headers
+ mips-resource-headers
+ opencl-resource-headers
+ openmp-resource-headers
+ ppc-htm-resource-headers
+ ppc-resource-headers
+ riscv-resource-headers
+ systemz-resource-headers
+ utility-resource-headers
+ ve-resource-headers
+ webassembly-resource-headers
+ windows-resource-headers
+ x86-resource-headers
+
+ # libs
+ clang-cpp
+ libclang
+ )
+
+ if multilib_is_native_abi; then
+ out+=(
+ # common stuff
+ bash-autocomplete
+ libclang-python-bindings
+
+ # tools
+ amdgpu-arch
+ c-index-test
+ clang
+ clang-format
+ clang-linker-wrapper
+ clang-offload-bundler
+ clang-offload-packager
+ clang-refactor
+ clang-repl
+ clang-rename
+ clang-scan-deps
+ diagtool
+ hmaptool
+ nvptx-arch
+
+ # needed for cross-compiling Clang
+ clang-tblgen
+ )
+
+ if use extra; then
+ out+=(
+ # extra tools
+ clang-apply-replacements
+ clang-change-namespace
+ clang-doc
+ clang-include-cleaner
+ clang-include-fixer
+ clang-move
+ clang-pseudo
+ clang-query
+ clang-reorder-fields
+ clang-tidy
+ clang-tidy-headers
+ clangd
+ find-all-symbols
+ modularize
+ pp-trace
+ )
+ fi
+
+ if llvm_are_manpages_built; then
+ out+=( docs-clang-man )
+ use extra && out+=( docs-clang-tools-man )
+ fi
+
+ if use doc; then
+ out+=( docs-clang-html )
+ use extra && out+=( docs-clang-tools-html )
+ fi
+
+ use static-analyzer && out+=(
+ clang-check
+ clang-extdef-mapping
+ scan-build
+ scan-build-py
+ scan-view
+ )
+ fi
+
+ printf "%s${sep}" "${out[@]}"
+}
+
+multilib_src_configure() {
+ llvm_prepend_path "${LLVM_MAJOR}"
+
+ local mycmakeargs=(
+ -DDEFAULT_SYSROOT=$(usex prefix-guest "" "${EPREFIX}")
+ -DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
+ -DCMAKE_INSTALL_MANDIR="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/share/man"
+ -DCLANG_CONFIG_FILE_SYSTEM_DIR="${EPREFIX}/etc/clang"
+ # relative to bindir
+ -DCLANG_RESOURCE_DIR="../../../../lib/clang/${LLVM_MAJOR}"
+
+ -DBUILD_SHARED_LIBS=OFF
+ -DCLANG_LINK_CLANG_DYLIB=ON
+ -DLLVM_DISTRIBUTION_COMPONENTS=$(get_distribution_components)
+ -DCLANG_INCLUDE_TESTS=$(usex test)
+
+ -DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
+
+ # these are not propagated reliably, so redefine them
+ -DLLVM_ENABLE_EH=ON
+ -DLLVM_ENABLE_RTTI=ON
+
+ # libgomp support fails to find headers without explicit -I
+ # furthermore, it provides only syntax checking
+ -DCLANG_DEFAULT_OPENMP_RUNTIME=libomp
+
+ # disable using CUDA to autodetect GPU, just build for all
+ -DCMAKE_DISABLE_FIND_PACKAGE_CUDAToolkit=ON
+ # disable linking to HSA to avoid automagic dep,
+ # load it dynamically instead
+ -DCMAKE_DISABLE_FIND_PACKAGE_hsa-runtime64=ON
+
+ -DCLANG_DEFAULT_PIE_ON_LINUX=$(usex pie)
+
+ -DCLANG_ENABLE_LIBXML2=$(usex xml)
+ -DCLANG_ENABLE_ARCMT=$(usex static-analyzer)
+ -DCLANG_ENABLE_STATIC_ANALYZER=$(usex static-analyzer)
+ # TODO: CLANG_ENABLE_HLSL?
+
+ -DPython3_EXECUTABLE="${PYTHON}"
+ )
+
+ if ! use elibc_musl; then
+ mycmakeargs+=(
+ -DPPC_LINUX_DEFAULT_IEEELONGDOUBLE=$(usex ieee-long-double)
+ )
+ fi
+
+ use test && mycmakeargs+=(
+ -DLLVM_BUILD_TESTS=ON
+ -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/${PF}/html"
+ -DSPHINX_WARNINGS_AS_ERRORS=OFF
+ )
+ if use extra; then
+ mycmakeargs+=(
+ -DCLANG-TOOLS_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/tools-extra"
+ )
+ fi
+ fi
+ mycmakeargs+=(
+ -DCLANG_INCLUDE_DOCS=${build_docs}
+ )
+ fi
+ if multilib_native_use extra; then
+ mycmakeargs+=(
+ -DLLVM_EXTERNAL_CLANG_TOOLS_EXTRA_SOURCE_DIR="${WORKDIR}"/clang-tools-extra
+ -DCLANG_TOOLS_EXTRA_INCLUDE_DOCS=${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
+ has_version -b sys-devel/clang:${LLVM_MAJOR} ||
+ die "sys-devel/clang:${LLVM_MAJOR} is required on the build host."
+ local tools_bin=${BROOT}/usr/lib/llvm/${LLVM_MAJOR}/bin
+ mycmakeargs+=(
+ -DLLVM_TOOLS_BINARY_DIR="${tools_bin}"
+ -DCLANG_TABLEGEN="${tools_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_build distribution
+}
+
+multilib_src_test() {
+ # respect TMPDIR!
+ local -x LIT_PRESERVES_TMP=1
+ local test_targets=( check-clang )
+ if multilib_native_use extra; then
+ test_targets+=(
+ check-clang-tools
+ check-clangd
+ )
+ fi
+ cmake_build "${test_targets[@]}"
+}
+
+src_install() {
+ MULTILIB_WRAPPED_HEADERS=(
+ /usr/include/clang/Config/config.h
+ )
+
+ multilib-minimal_src_install
+
+ # Move runtime headers to /usr/lib/clang, where they belong
+ mv "${ED}"/usr/include/clangrt "${ED}"/usr/lib/clang || die
+ # move (remaining) wrapped headers back
+ if use extra; then
+ mv "${T}"/clang-tidy "${ED}"/usr/include/ || die
+ fi
+ mv "${ED}"/usr/include "${ED}"/usr/lib/llvm/${LLVM_MAJOR}/include || die
+
+ # Apply CHOST and version suffix to clang tools
+ 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/${LLVM_MAJOR}/bin/${i}" || die
+ dosym "clang-${LLVM_MAJOR}" "/usr/lib/llvm/${LLVM_MAJOR}/bin/${i}-${LLVM_MAJOR}"
+ dosym "${i}-${LLVM_MAJOR}" "/usr/lib/llvm/${LLVM_MAJOR}/bin/${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 "${i}-${LLVM_MAJOR}" \
+ "/usr/lib/llvm/${LLVM_MAJOR}/bin/${abi_chost}-${i}-${LLVM_MAJOR}"
+ dosym "${abi_chost}-${i}-${LLVM_MAJOR}" \
+ "/usr/lib/llvm/${LLVM_MAJOR}/bin/${abi_chost}-${i}"
+ done
+ done
+}
+
+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 "${ED}"/usr/lib/llvm/${LLVM_MAJOR}/include "${ED}"/usr/include || die
+ mv "${ED}"/usr/lib/clang "${ED}"/usr/include/clangrt || die
+ if multilib_native_use extra; then
+ # don't wrap clang-tidy headers, the list is too long
+ # (they're fine for non-native ABI but enabling the targets is problematic)
+ mv "${ED}"/usr/include/clang-tidy "${T}/" || die
+ fi
+}
+
+multilib_src_install_all() {
+ python_fix_shebang "${ED}"
+ if use static-analyzer; then
+ python_optimize "${ED}"/usr/lib/llvm/${LLVM_MAJOR}/share/scan-view
+ fi
+
+ docompress "/usr/lib/llvm/${LLVM_MAJOR}/share/man"
+ llvm_install_manpages
+ # match 'html' non-compression
+ use doc && docompress -x "/usr/share/doc/${PF}/tools-extra"
+ # +x for some reason; TODO: investigate
+ use static-analyzer && fperms a-x "/usr/lib/llvm/${LLVM_MAJOR}/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 " ${EROOT}/usr/lib/llvm/${LLVM_MAJOR}/share/clang"
+ if use extra; then
+ 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"
+ fi
+}
+
+pkg_postrm() {
+ if [[ -z ${ROOT} && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+ eselect compiler-shadow clean all
+ fi
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-14 03:59:20 +0000