clang-common-17.0.2.ebuild
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# Copyright 1999-2023 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=8 inherit bash-completion-r1 llvm.org multilib DESCRIPTION="Common files shared between multiple slots of clang" HOMEPAGE="https://llvm.org/" LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA" SLOT="0" KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~ppc-macos ~x64-macos" IUSE=" default-compiler-rt default-libcxx default-lld llvm-libunwind hardened stricter " PDEPEND=" sys-devel/clang:* default-compiler-rt? ( sys-devel/clang-runtime[compiler-rt] llvm-libunwind? ( sys-libs/llvm-libunwind[static-libs] ) !llvm-libunwind? ( sys-libs/libunwind[static-libs] ) ) !default-compiler-rt? ( sys-devel/gcc ) default-libcxx? ( >=sys-libs/libcxx-${PV}[static-libs] ) !default-libcxx? ( sys-devel/gcc ) default-lld? ( sys-devel/lld ) !default-lld? ( sys-devel/binutils ) " IDEPEND=" !default-compiler-rt? ( sys-devel/gcc-config ) !default-libcxx? ( sys-devel/gcc-config ) " LLVM_COMPONENTS=( clang/utils ) llvm.org_set_globals pkg_pretend() { [[ ${CLANG_IGNORE_DEFAULT_RUNTIMES} ]] && return local flag missing_flags=() for flag in default-{compiler-rt,libcxx,lld}; do if ! use "${flag}" && has_version "sys-devel/clang[${flag}]"; then missing_flags+=( "${flag}" ) fi done if [[ ${missing_flags[@]} ]]; then eerror "It seems that you have the following flags set on sys-devel/clang:" eerror eerror " ${missing_flags[*]}" eerror eerror "The default runtimes are now set via flags on sys-devel/clang-common." eerror "The build is being aborted to prevent breakage. Please either set" eerror "the respective flags on this ebuild, e.g.:" eerror eerror " sys-devel/clang-common ${missing_flags[*]}" eerror eerror "or build with CLANG_IGNORE_DEFAULT_RUNTIMES=1." die "Mismatched defaults detected between sys-devel/clang and sys-devel/clang-common" fi } doclang_cfg() { local triple="${1}" local tool for tool in ${triple}-clang{,++}; do newins - "${tool}.cfg" <<-EOF # This configuration file is used by ${tool} driver. @gentoo-common.cfg @gentoo-common-ld.cfg EOF done newins - "${triple}-clang-cpp.cfg" <<-EOF # This configuration file is used by the ${triple}-clang-cpp driver. @gentoo-common.cfg EOF # Install symlinks for triples with other vendor strings since some # programs insist on mangling the triple. local vendor for vendor in gentoo pc unknown; do local vendor_triple="${triple%%-*}-${vendor}-${triple#*-*-}" for tool in clang{,++,-cpp}; do if [[ ! -f "${ED}/etc/clang/${vendor_triple}-${tool}.cfg" ]]; then dosym "${triple}-${tool}.cfg" "/etc/clang/${vendor_triple}-${tool}.cfg" fi done done } src_install() { newbashcomp bash-autocomplete.sh clang insinto /etc/clang newins - gentoo-runtimes.cfg <<-EOF # This file is initially generated by sys-devel/clang-runtime. # It is used to control the default runtimes using by clang. --rtlib=$(usex default-compiler-rt compiler-rt libgcc) --unwindlib=$(usex default-compiler-rt libunwind libgcc) --stdlib=$(usex default-libcxx libc++ libstdc++) -fuse-ld=$(usex default-lld lld bfd) EOF newins - gentoo-gcc-install.cfg <<-EOF # This file is maintained by gcc-config. # It is used to specify the selected GCC installation. EOF newins - gentoo-common.cfg <<-EOF # This file contains flags common to clang, clang++ and clang-cpp. @gentoo-runtimes.cfg @gentoo-gcc-install.cfg @gentoo-hardened.cfg # bug #870001 -include "${EPREFIX}/usr/include/gentoo/maybe-stddefs.h" EOF # clang-cpp does not like link args being passed to it when directly # invoked, so use a separate configuration file. newins - gentoo-common-ld.cfg <<-EOF # This file contains flags common to clang and clang++ @gentoo-hardened-ld.cfg EOF # Baseline hardening (bug #851111) newins - gentoo-hardened.cfg <<-EOF # Some of these options are added unconditionally, regardless of # USE=hardened, for parity with sys-devel/gcc. -fstack-clash-protection -fstack-protector-strong -fPIE -include "${EPREFIX}/usr/include/gentoo/fortify.h" EOF newins - gentoo-hardened-ld.cfg <<-EOF # Some of these options are added unconditionally, regardless of # USE=hardened, for parity with sys-devel/gcc. -Wl,-z,relro EOF dodir /usr/include/gentoo cat >> "${ED}/usr/include/gentoo/maybe-stddefs.h" <<-EOF || die /* __has_include is an extension, but it's fine, because this is only for Clang anyway. */ #if defined __has_include && __has_include (<stdc-predef.h>) && !defined(__GLIBC__) # include <stdc-predef.h> #endif EOF local fortify_level=$(usex hardened 3 2) # We have to do this because glibc's headers warn if F_S is set # without optimization and that would at the very least be very noisy # during builds and at worst trigger many -Werror builds. cat >> "${ED}/usr/include/gentoo/fortify.h" <<- EOF || die #ifdef __clang__ # pragma clang system_header #endif #ifndef _FORTIFY_SOURCE # if defined(__has_feature) # define __GENTOO_HAS_FEATURE(x) __has_feature(x) # else # define __GENTOO_HAS_FEATURE(x) 0 # endif # # if defined(__STDC_HOSTED__) && __STDC_HOSTED__ == 1 # define __GENTOO_NOT_FREESTANDING 1 # else # define __GENTOO_NOT_FREESTANDING 0 # endif # # if defined(__OPTIMIZE__) && __OPTIMIZE__ > 0 && __GENTOO_NOT_FREESTANDING > 0 # if !defined(__SANITIZE_ADDRESS__) && !__GENTOO_HAS_FEATURE(address_sanitizer) && !__GENTOO_HAS_FEATURE(memory_sanitizer) # define _FORTIFY_SOURCE ${fortify_level} # endif # endif # undef __GENTOO_HAS_FEATURE # undef __GENTOO_NOT_FREESTANDING #endif EOF if use hardened ; then cat >> "${ED}/etc/clang/gentoo-hardened.cfg" <<-EOF || die # Options below are conditional on USE=hardened. -D_GLIBCXX_ASSERTIONS # Analogue to GLIBCXX_ASSERTIONS # https://libcxx.llvm.org/UsingLibcxx.html#assertions-mode # https://libcxx.llvm.org/Hardening.html#using-hardened-mode -D_LIBCPP_ENABLE_ASSERTIONS=1 EOF cat >> "${ED}/etc/clang/gentoo-hardened-ld.cfg" <<-EOF || die # Options below are conditional on USE=hardened. -Wl,-z,now EOF fi if use stricter; then newins - gentoo-stricter.cfg <<-EOF # This file increases the strictness of older clang versions # to match the newest upstream version. # clang-16 defaults -Werror=implicit-function-declaration -Werror=implicit-int -Werror=incompatible-function-pointer-types # constructs banned by C2x -Werror=deprecated-non-prototype # deprecated but large blast radius #-Werror=strict-prototypes EOF cat >> "${ED}/etc/clang/gentoo-common.cfg" <<-EOF || die @gentoo-stricter.cfg EOF fi # We only install config files for supported ABIs because unprefixed tools # might be used for crosscompilation where e.g. PIE may not be supported. # See bug #912237 and bug #901247. doclang_cfg "${CHOST}" # Just ${CHOST} won't do due to bug #912685. local abi for abi in $(get_all_abis); do local abi_chost=$(get_abi_CHOST "${abi}") doclang_cfg "${abi_chost}" done } pkg_preinst() { if has_version -b sys-devel/gcc-config && has_version sys-devel/gcc then local gcc_path=$(gcc-config --get-lib-path 2>/dev/null) if [[ -n ${gcc_path} ]]; then cat >> "${ED}/etc/clang/gentoo-gcc-install.cfg" <<-EOF --gcc-install-dir="${gcc_path%%:*}" EOF fi fi } | ||