diff options
Diffstat (limited to 'llvm-core/clang-common/clang-common-20.0.0_pre20241221.ebuild')
| -rw-r--r-- | llvm-core/clang-common/clang-common-20.0.0_pre20241221.ebuild | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/llvm-core/clang-common/clang-common-20.0.0_pre20241221.ebuild b/llvm-core/clang-common/clang-common-20.0.0_pre20241221.ebuild new file mode 100644 index 000000000000..8e66cf2865d9 --- /dev/null +++ b/llvm-core/clang-common/clang-common-20.0.0_pre20241221.ebuild @@ -0,0 +1,310 @@ +# Copyright 1999-2024 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" +IUSE=" + default-compiler-rt default-libcxx default-lld + bootstrap-prefix cet hardened llvm-libunwind +" + +PDEPEND=" + default-compiler-rt? ( + llvm-core/clang-runtime:${LLVM_MAJOR}[compiler-rt] + llvm-libunwind? ( llvm-runtimes/libunwind[static-libs] ) + !llvm-libunwind? ( sys-libs/libunwind[static-libs] ) + ) + !default-compiler-rt? ( sys-devel/gcc ) + default-libcxx? ( >=llvm-runtimes/libcxx-${PV}[static-libs] ) + !default-libcxx? ( sys-devel/gcc ) + default-lld? ( >=llvm-core/lld-${PV} ) + !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 "llvm-core/clang[${flag}]"; then + missing_flags+=( "${flag}" ) + fi + done + + if [[ ${missing_flags[@]} ]]; then + eerror "It seems that you have the following flags set on llvm-core/clang:" + eerror + eerror " ${missing_flags[*]}" + eerror + eerror "The default runtimes are now set via flags on llvm-core/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 " llvm-core/clang-common ${missing_flags[*]}" + eerror + eerror "or build with CLANG_IGNORE_DEFAULT_RUNTIMES=1." + die "Mismatched defaults detected between llvm-core/clang and llvm-core/clang-common" + fi +} + +_doclang_cfg() { + local triple="${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 + if [[ ${triple} == x86_64* ]]; then + cat >> "${ED}/etc/clang/${tool}.cfg" <<-EOF || die + @gentoo-cet.cfg + EOF + fi + done + + if use kernel_Darwin; then + cat >> "${ED}/etc/clang/${triple}-clang++.cfg" <<-EOF || die + -lc++abi + EOF + fi + + newins - "${triple}-clang-cpp.cfg" <<-EOF + # This configuration file is used by the ${triple}-clang-cpp driver. + @gentoo-common.cfg + EOF + if [[ ${triple} == x86_64* ]]; then + cat >> "${ED}/etc/clang/${triple}-clang-cpp.cfg" <<-EOF || die + @gentoo-cet.cfg + EOF + fi + + # Install symlinks for triples with other vendor strings since some + # programs insist on mangling the triple. + local vendor + for vendor in gentoo pc unknown; do + local vendor_triple="${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}-${tool}.cfg" + fi + done + done +} + +doclang_cfg() { + local triple="${1}" + + _doclang_cfg ${triple} + + # LLVM may have different arch names in some cases. For example in x86 + # profiles the triple uses i686, but llvm will prefer i386 if invoked + # with "clang" on x86 or "clang -m32" on x86_64. The gentoo triple will + # be used if invoked through ${CHOST}-clang{,++,-cpp} though. + # + # To make sure the correct triples are installed, + # see Triple::getArchTypeName() in llvm/lib/TargetParser/Triple.cpp + # and compare with CHOST values in profiles. + + local abi=${triple%%-*} + case ${abi} in + armv4l|armv4t|armv5tel|armv6j|armv7a) + _doclang_cfg ${triple/${abi}/arm} + ;; + i686) + _doclang_cfg ${triple/${abi}/i386} + ;; + sparc) + _doclang_cfg ${triple/${abi}/sparcel} + ;; + sparc64) + _doclang_cfg ${triple/${abi}/sparcv9} + ;; + esac +} + +src_install() { + newbashcomp bash-autocomplete.sh clang + + insinto /etc/clang + newins - gentoo-runtimes.cfg <<-EOF + # This file is initially generated by llvm-core/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 "${EPREFIX}/usr/include/gentoo/maybe-stddefs.h" + EOF + + # clang-cpp does not like link args being passed to it when directly + # invoked, so use a separate configuration file. + newins - gentoo-common-ld.cfg <<-EOF + # This file contains flags common to clang and clang++ + @gentoo-hardened-ld.cfg + EOF + + # Baseline hardening (bug #851111) + newins - gentoo-hardened.cfg <<-EOF + # Some of these options are added unconditionally, regardless of + # USE=hardened, for parity with sys-devel/gcc. + -Xarch_host -fstack-clash-protection + -Xarch_host -fstack-protector-strong + -fPIE + -include "${EPREFIX}/usr/include/gentoo/fortify.h" + EOF + + newins - gentoo-cet.cfg <<-EOF + -Xarch_host -fcf-protection=$(usex cet full none) + EOF + + if use kernel_Darwin; then + newins - gentoo-hardened-ld.cfg <<-EOF + # There was -Wl,-z,relro here, but it's not supported on Mac + # TODO: investigate whether -bind_at_load or -read_only_stubs will do the job + EOF + else + newins - gentoo-hardened-ld.cfg <<-EOF + # Some of these options are added unconditionally, regardless of + # USE=hardened, for parity with sys-devel/gcc. + -Wl,-z,relro + -Wl,-z,now + EOF + fi + + dodir /usr/include/gentoo + + cat >> "${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(__OPTIMIZE__) || __OPTIMIZE__ == 0 + # elif !defined(__STDC_HOSTED__) || __STDC_HOSTED__ != 1 + # elif defined(__SANITIZE_ADDRESS__) + # elif __GENTOO_HAS_FEATURE(address_sanitizer) + # elif __GENTOO_HAS_FEATURE(hwaddress_sanitizer) + # elif __GENTOO_HAS_FEATURE(memory_sanitizer) + # elif __GENTOO_HAS_FEATURE(numerical_stability_sanitizer) + # elif __GENTOO_HAS_FEATURE(realtime_sanitizer) + # elif __GENTOO_HAS_FEATURE(thread_sanitizer) + # else + # define _FORTIFY_SOURCE ${fortify_level} + # endif + # + # undef __GENTOO_HAS_FEATURE + #endif + EOF + + # TODO: Maybe -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_FAST for + # non-hardened? + if use hardened ; then + cat >> "${ED}/etc/clang/gentoo-hardened.cfg" <<-EOF || die + # Options below are conditional on USE=hardened. + -Xarch_host -D_GLIBCXX_ASSERTIONS + + # Analogue to GLIBCXX_ASSERTIONS + # https://libcxx.llvm.org/UsingLibcxx.html#assertions-mode + # https://libcxx.llvm.org/Hardening.html#using-hardened-mode + -Xarch_host -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE + EOF + + cat >> "${ED}/etc/clang/gentoo-hardened-ld.cfg" <<-EOF || die + # Options below are conditional on USE=hardened. + 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. 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 + + if use kernel_Darwin; then + cat >> "${ED}/etc/clang/gentoo-common.cfg" <<-EOF || die + # Gentoo Prefix on Darwin + -Wl,-search_paths_first + EOF + if use bootstrap-prefix ; then + # bootstrap-prefix is only set during stage2 of bootstrapping + # Prefix, where EPREFIX is set to EPREFIX/tmp. + # Here we need to point it at the future lib dir of the stage3's + # EPREFIX. + cat >> "${ED}/etc/clang/gentoo-common.cfg" <<-EOF || die + -Wl,-rpath,${EPREFIX}/../usr/lib + -Wl,-L,${EPREFIX}/../usr/lib + -isystem ${EPREFIX}/../usr/include + EOF + fi + # Using -Wl,-L instead of -L to trick compiler driver to put it + # after -isysroot's internal -L + cat >> "${ED}/etc/clang/gentoo-common.cfg" <<-EOF || die + -Wl,-rpath,${EPREFIX}/usr/lib + -Wl,-L,${EPREFIX}/usr/lib + -isystem ${EPREFIX}/usr/include + -isysroot ${EPREFIX}/MacOSX.sdk + EOF + fi +} + +pkg_preinst() { + if has_version -b sys-devel/gcc-config && has_version sys-devel/gcc + then + local gcc_path=$(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 +} |