#!/usr/bin/env bash # Copyright 2002-2022 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 # Format of /etc/env.d/gcc/ contents: # config-: CURRENT=- # -: has gcc-specific variables (provided by sys-devel/gcc) : ${ROOT:=/} [[ ${ROOT} != */ ]] && ROOT="${ROOT}/" [[ ${ROOT} != /* ]] && ROOT="${PWD%/}/${ROOT}" BROOT="@GENTOO_EPREFIX@" [[ ${BROOT} == @*@ ]] && BROOT="" : ${EPREFIX="${BROOT}"} EROOT="${ROOT%/}${EPREFIX}/" export PORTAGE_CONFIGROOT="${EROOT}" cd / trap ":" INT QUIT TSTP argv0=${0##*/} functions_script="${BROOT}/lib/gentoo/functions.sh" source "${functions_script}" || { echo "${argv0}: Could not source ${functions_script}!" 1>&2 exit 1 } esyslog() { :; } has() { [[ " ${*:2} " == *" $1 "* ]]; } die() { eerror "${argv0}: $*"; exit 1; } umask 022 # *BSD SED does not work as-is, use GNU SED. TODO: find details. SED=$(type -P gsed) : ${SED:=$(type -P sed)} # Further pain: `tac` is not available everywhere #390179 if ! type -P tac >/dev/null ; then tac() { ${SED} -e '1!G;h;$!d' "$@" ; } fi PV="@PV@" [[ ${PV} == @*@ ]] && PV="git" ABI=${DEFAULT_ABI:-$(portageq envvar DEFAULT_ABI 2>/dev/null)} LIBDIR_VAR=LIBDIR_${ABI} GENTOO_LIBDIR=${!LIBDIR_VAR:-$(portageq envvar "${LIBDIR_VAR}" 2>/dev/null)} [[ $? -ne 0 || -z ${GENTOO_LIBDIR} ]] && GENTOO_LIBDIR="@GENTOO_LIBDIR@" [[ ${GENTOO_LIBDIR} == @*@ ]] && GENTOO_LIBDIR="lib" usage() { cat <<-EOF Usage: gcc-config [options] [CC Profile] gcc-config [options] --get-current-profile [CTARGET] Change the current compiler profile, or give info about profiles. Options: -C, --nocolor Disable color output -O, --use-old Use the old profile if one was selected. -f, --force Make sure all config files are regenerated. -c, --get-current-profile Print current used gcc profile. -l, --list-profiles Print a list of available profiles. -S, --split-profile Split profiles into their components -E, --print-environ Print environment that can be used to setup the current gcc profile, or a specified one. -B, --get-bin-path Print path where binaries of the given/current profile are located. -L, --get-lib-path Print path where libraries of the given/current profile are located. Profile names are of the form: - (like 'i686-pc-linux-gnu-3.2.1') (like '3.2.1') (as specified in '--list-profiles') latest -latest (like mmix-latest) EOF exit ${1:-1} } [[ $# -lt 1 ]] && usage 1 # Usage: version_sorted_paths # Returns paths ordered by version from olders to newest. # We use the following hack: assume the input containst digits only in places of versions # Normalizer: # echo "hello-world-1.2.3.444.56778" | ${SED} -e 's/[0-9]\+/0000&/g' | ${SED} -e 's/0*\([0-9]\{4\}\)/\1/g' # hello-world-0001.0002.0003.0444.56778 # That way we can have 9.0 < 10.0 order. # TODO: explore how portable 'sort -V' is and try using that instead. version_sorted_paths() { local p mangled_v for p in "$@"; do # TODO: avoid -r mangled_v=$(printf "%s" "${p}" | ${SED} -e 's/[0-9]\+/0000&/g' | ${SED} -e 's/0*\([0-9]\{4\}\)/\1/g' ) printf "%s %s\n" "${mangled_v}" "${p}" done | LANG=C sort | $SED -e 's/^.* //g' } # Usage: source_var [default value] source_var() { unset $1 local val=$(source "$2"; echo "${!1}") : ${val:=$3} eval $1=\"${val}\" } show_var() { source_var "$@" echo "${!1}" } source_profile() { # Compatibility with profile files created before 2019-09-05. # These profile files were setting PATH variable. # Sourcing them without restoring previous PATH value breaks gcc-config. local backup_PATH=${PATH} source "$1" PATH=${backup_PATH} } try_real_hard_to_find_CHOST() { # # First we read make.conf # local varname=${1:-CHOST} local conf=${EROOT}/etc/portage/make.conf if [[ ! -e ${conf} && -e ${EROOT}/etc/make.conf ]] ; then conf=${EROOT}/etc/make.conf fi local ret=$(source "${conf}" 2>/dev/null ; echo ${!varname}) if [[ -z ${ret} ]] ; then # newer portage supports spaces between the var and = # CHOST = "this-is-silly" ret=$(eval $( ${SED} -n \ -e 's:[[:space:]]::g' \ -e "/^${varname}=/p" \ "${conf}" ) ; echo ${!varname} ) fi if [[ -n ${ret} ]] ; then echo ${ret} return 0 fi # # Then we try /etc/env.d/gcc/config-${CTARGET} # if [[ -s ${EROOT}/etc/env.d/gcc/config-${CTARGET} ]] ; then ret=$(split_gcc_ver $(show_var CURRENT "${EROOT}"/etc/env.d/gcc/config-${CTARGET})) echo ${ret% *} fi } get_chost() { # If it's set in the env, trust the setting. If it's wrong, # then that's the caller's problem. [[ -n ${CHOST} ]] && return 0 export CHOST # Make sure Portage isn't broken. CHOST=$(portageq envvar CHOST 2>/dev/null) if [[ $? -ne 0 || -z ${CHOST} ]] ; then ewarn "Python or Portage seems to be broken, attempting to locate CHOST ourselves ..." CHOST=$(try_real_hard_to_find_CHOST) fi if [[ -z ${CHOST} ]] ; then eerror "${argv0}: Could not get portage CHOST!" eerror "${argv0}: You should verify that CHOST is set in one of these places:" eerror "${argv0}: - ${EROOT}/etc/portage/make.conf" eerror "${argv0}: - active environment" exit 1 fi } is_cross_compiler() { [[ ${CC_COMP/${CHOST}} == ${CC_COMP} ]] } is_same_mountpoint() { local file1=$1 file2=$2 if type -P findmnt > /dev/null ; then local file1_mountpoint=$(findmnt -n -o TARGET -T "${file1}") local file2_mountpoint=$(findmnt -n -o TARGET -T "${file2}") [[ ${file1_mountpoint} == ${file2_mountpoint} ]] return else local file1_check_file file2_check_file result if [[ -d ${file1} ]] ; then file1_check_file=${file1}/.gcc.config.mountpoint_check_file1.$$ else file1_check_file=${file1%/*}/.gcc.config.mountpoint_check_file1.$$ fi if [[ -d ${file2} ]] ; then file2_check_file=${file2}/.gcc.config.mountpoint_check_file2.$$ else file2_check_file=${file2%/*}/.gcc.config.mountpoint_check_file2.$$ fi rm -f "${file1_check_file}" "${file2_check_file}" touch "${file1_check_file}" ln "${file1_check_file}" "${file2_check_file}" 2> /dev/null result=$? rm -f "${file1_check_file}" "${file2_check_file}" return ${result} fi } # Usage: atomic_ln atomic_ln() { local src=$1 dst=$2 dstfile=$3 tmp tmp="${dst}/.gcc.config.${dstfile}" # `ln` will expand into unlink();symlink(); which # is not atomic for a small amount of time, but # `mv` is a single rename() call ln -sf "${src}" "${tmp}" mv "${tmp}" "${dst}/${dstfile}" } uniq_wrapper_list() { local ver=$1; shift # We want to normalize away existing target prefix. set -- "${@#${CTARGET}-*}" # And we want to filter out any version suffixed progs. set -- "${@//*-${ver}}" # Finally, filter out dupes. printf '%s\n' "$@" | sort -u } update_wrappers() { # Update the wrappers for this profile. We need to clean out # the old wrappers if the functionality no longer exists (like # re-emerging gcc with diff USE flags) and install new wrappers # for new functionality (like a version bump). local x CTARGET=$1 # Facts on gcc's private binary dir contents: # # Native directory looks like: # /usr/x86_64-pc-linux-gnu/gcc-bin/11.0.0 # Contents looks like: # - 'foo' ('gcc', 'c++', 'gcc-ar', 'lto-dump') # - 'foo-${v}' (go-11, gofmt-11) # - ${CTARGET}-foo ('${CTARGET}-gcc', ...) # # Not each 'foo' has it's ${CTARGET}-foo match. # Examples are: # - lto-dump, gcov-dump, gcov-tool (no ${CTARGET}-lto-dump equvalent) # - go-${MAJOR}, gofmt-${MAJOR} (no ${CTARGET}-go-${MAJOR} equivalent) # - ${CTARGET}-gcc-11.0.0 (no gcc-11.0.0 equivalent) # TODO: is it a gcc or toolchain.eclass bug? # # Cross directory looks like: # /usr/x86_64-pc-linux-gnu/ia64-unknown-linux-gnu/gcc-bin/10.1.0 # Contents look like: # - ${CTARGET}-foo ('${CTARGET}-gcc', ...) # # Every tool is prefixed. # Use the old dir to see what we wrapped up previously. local old_wrappers=( $( [[ -n ${OLD_GCC_PATH} ]] || exit 1 uniq_wrapper_list "${OLD_CC_COMP_VERSION}" $( cd "${ROOT}${OLD_GCC_PATH}" 2>/dev/null || exit 1 echo * ) ) ) # See what new stuff we need to wrap up. local new_wrappers=( $( uniq_wrapper_list "${CC_COMP_VERSION}" $( cd "${ROOT}${GCC_PATH}" || exit 1 echo * ) ) ) [[ -z ${new_wrappers} ]] && return 1 # First delete the wrappers that the old one provided but the # new ones do not. for x in "${old_wrappers[@]}" ; do has "${x}" "${new_wrappers[@]}" && continue rm -f "${EROOT}usr/bin/${x}" "${EROOT}usr/bin/${CTARGET}-${x}" done # For all toolchains, we want to create the fully qualified # `tuple-foo`. Only native ones do we want the simple `foo` # and only for USE_NATIVE_LINKS=yes mode. local all_wrappers=( ${new_wrappers[@]/#/${CTARGET}-} ) if ! is_cross_compiler ; then all_wrappers+=( "${new_wrappers[@]}" ) if [[ ${USE_CC_WRAPPERS} == "yes" ]]; then # There are a few fun extra progs which we have to handle #412319 all_wrappers+=( cc:gcc f77:g77 ) fi fi # Then install wrappers for anything new to this profile. local ref for x in "${all_wrappers[@]}" ; do # We want to figure out the 'reference file' for each # wrapper (the binary we're 'wrapping') so that we can # sync mtimes together. This makes things like ccache # happy. See Bug #70548 for more info. # # x=cc:gcc -> ref=/path/to/gcc ref="${ROOT}${GCC_PATH}/${x#*:}" # x=cc:gcc -> x=cc x=${x%:*} if [[ ! -x ${ref} ]] ; then if is_cross_compiler && [[ ${ref} != *-accel-* ]] ; then ewarn "insanity with ${x} and ${ref}" else # For native targets, the ref might not be # fully qualified, so use the short name. ref="${ROOT}${GCC_PATH}/${x#${CTARGET}-}" fi fi # Now do the actual linking to the target binary if [[ ${x#${CTARGET}-} == ${x} && ${USE_NATIVE_LINKS} != yes ]]; then # Delete stale native symlink. rm -f "${EROOT}usr/bin/${x}" elif [[ -x ${ref} ]] ; then # accel/offload compilers are named like 'x86_64-pc-linux-gnu-accel-nvptx-none-gcc'. # # When building the offload compiler, we'll have ${CHOST}-${CTARGET} where # CHOST is the host and CTARGET is whatever the offload target is. gcc-config # doesn't expect this 'double tuple'. # # e.g. when building nvptx-none, we'll have something like 'nvptx-none-x86_64-pc-linux-gnu-accel-nvptx-none-gcc' # and we want to strip that to be just x86_64-pc-linux-gnu-accel-nvptx-none-gcc, as that's # what we want symlinks to be made for in /usr/bin. [[ ${x} == *-accel-* ]] && x="${x#${CTARGET}-}" atomic_ln "${ref#${ROOT}}" "${EROOT}usr/bin" "${x}" else # Make sure we have no stale wrappers rm -f "${EROOT}usr/bin/${x}" fi done # Legacy cruft, make sure we don't leave it laying around, as we used to install # genuine wrappers like python-exec, bug #143205 rm -f "${EROOT}usr/bin/${CTARGET}-cc" "${EROOT}usr/bin"/{${CTARGET}-,}g{cc,++}{32,64} # But create our own ${CTARGET}-cc in /usr/bin to avoid fallbacks # to the symlinks LLVM creates (sys-devel/clang-toolchain-symlinks). # bug #872416. atomic_ln "${CTARGET}-gcc" "${EROOT}usr/bin" "${CTARGET}-cc" # handle the canonical cpp wrapper if ! is_cross_compiler ; then if [[ ${USE_NATIVE_LINKS} == yes ]]; then atomic_ln "${EPREFIX%/}/usr/bin/${CTARGET}-cpp" "${EROOT}lib" "cpp" else rm -f "${EROOT}lib/cpp" fi fi # handle c89 and c99 wrappers if ! is_cross_compiler ; then if [[ ${USE_NATIVE_LINKS} == yes ]]; then # In June 2020 gcc-config taken over file handling from toolchain.eclass. cp -fpP "${EROOT}"usr/share/gcc-config/c89 "${EROOT}"usr/bin/c89 cp -fpP "${EROOT}"usr/share/gcc-config/c99 "${EROOT}"usr/bin/c99 else rm -f "${EROOT}"usr/bin/c89 rm -f "${EROOT}"usr/bin/c99 fi fi } mv_if_diff() { if cmp -s "$1" "$2" ; then rm -f "$1" return 0 else mv -f "$1" "$2" return 1 fi } handle_split_usr() { # We need to make sure that libgcc_s.so / libunwind.so make it into /lib. # On many systems (x86/amd64/etc...), this will probably never matter, # but on other systems (arm/mips/etc...), this is quite critical. # http://bugs.gentoo.org/60190 # # Note: libunwind.so.7 is a DT_NEEDED dependency only on ia64 systems # where libunwind.so.7 is provided by gcc itself, see: # https://bugs.gentoo.org/667020 # https://bugs.gentoo.org/693252 # # The funky move magic is required for proper updating of in-use files. # Gentoo Prefix systems don't "boot", so no need to handle split-/usr [[ -n ${EPREFIX} ]] && return 0 # We use the same ordering logic as mentioned in the MY_LDPATH setup. # We get the libs from the latest version available. local LDPATH eval $(grep -h '^LDPATH=' $(version_sorted_paths "${GCC_ENV_D}"/${CHOST}-*) | tail -1) LDPATH=${LDPATH%%:*} # If GCC directory is not in separate mountpoint than /lib, # then do not bother with copying libraries to /lib. if is_same_mountpoint "${EROOT}/lib" "${ROOT}/${LDPATH}" ; then local lib old_libs=0 saved_nullglob=$(shopt -p nullglob) shopt -s nullglob for lib in "${EROOT}"/lib*/libgcc_s{.so*,*dylib} "${EROOT}"/lib*/libunwind.so.7* ; do # If we previously had stuff in /, make sure ldconfig gets re-run. einfo "Removing '${lib}'" rm -f "${lib}" old_libs=1 done ${saved_nullglob} return ${old_libs} fi # Only bother with this stuff for the native ABI. We assume the user # doesn't have critical binaries for non-native ABIs which is fair. local gcclib local libdir="${EROOT}${GENTOO_LIBDIR}" mkdir -p "${libdir}"/.gcc.config.new || return 0 # !?!?! for gcclib in gcc_s unwind ; do # This assumes that we always have the .so symlink, # but for now, that should be safe ... for gcclib in "${ROOT}${LDPATH}"/lib${gcclib}.so.* ; do [[ -e ${gcclib} ]] || continue einfo "Backing up '${gcclib}' to '${libdir}'" cp -pP "${gcclib}" "${libdir}"/.gcc.config.new/ # no need to sanity `rm` this as the `mv` should take care # of it. we also need this step to be completely atomic # for systems that have even `mv` linked against libgcc_s.so. # http://bugs.gentoo.org/150257 mv -f "${libdir}"/.gcc.config.new/* "${libdir}"/ done done rmdir "${libdir}"/.gcc.config.new return 0 } prefix_copy_gcc_libs() { # no business here if not Prefix [[ -z ${EPREFIX} ]] && return 0 # To emulate properly what ld.so.conf magic does for non-prefix, # we have to copy the libs of all installed (native) GCC's and # make sure we do the current one as last, such that the # pointers for the unversioned libs point to the currently # selected version. This is only necessary for platforms that use # shared libs, and only record the object name (not the full path). case ${CHOST} in *-mint*) # static only, nothing to do here return 0 ;; *-darwin*) # Mach-O records all references with full path, hence each # object has links to the GCC-specific version of the lib. return 0 ;; esac # dstlibgcc location is added to RPATH by the binutils wrapper local dstlibgcc=${EROOT}/usr/${CHOST}/lib/gcc # Prepare empty directories first local temporary=.gcc.config.new rm -rf "${dstlibgcc}"/${temporary} || return 1 mkdir -p "${dstlibgcc}"/${temporary} || return 1 local LIBSUFFIX case ${CHOST} in *-aix*) LIBSUFFIX="a" AIXLIBS= do_single_runtime() { local sourcedir=$1; shift local libname=$1; shift local targetdir=$1; shift local finaldir=$1; shift aixdll \ --merge-runtime \ --finish=false \ --target="${targetdir}"/lib${libname}.${LIBSUFFIX} \ "${sourcedir}"/lib${libname}.${LIBSUFFIX} \ || return 1 [[ ${AIXLIBS} == *":${targetdir}/lib${libname}.${LIBSUFFIX}:"* ]] \ || AIXLIBS="${AIXLIBS}:${targetdir}/lib${libname}.${LIBSUFFIX}:" } finish_runtime_dir() { local sourcedir=$1; shift local targetdir=$1; shift local cleanup=$1; shift local f save_IFS save_IFS=$IFS; IFS=: for f in ${AIXLIBS}; do IFS=$save_IFS [[ -n ${f} ]] || continue aixdll \ --finish-merge \ --keepdir=false \ "${f}" \ || return 1 done IFS=$save_IFS unset AIXLIBS finish_runtime_dir_elf \ "${sourcedir}" \ "${targetdir}" \ ${cleanup} \ || return 1 } ;; hppa64*-hpux*) LIBSUFFIX="sl" do_single_runtime() { do_single_runtime_elf "$@" } finish_runtime_dir() { finish_runtime_dir_elf "$@" } ;; hppa*-hpux*) LIBSUFFIX="sl" do_single_runtime() { local sourcedir=$1; shift local libname=$1; shift local targetdir=$1; shift local finaldir=$1; shift # when using some simple shell script wrappers (again :)), # there may be no libs around! if [[ -n $(ls "${sourcedir}"/lib${libname}.*${LIBSUFFIX}* 2>/dev/null) ]]; then cp -fpP "${sourcedir}"/lib${libname}.*${LIBSUFFIX}* "${targetdir}" || return 1 # gcc creates "libgcc_s.4" with symlink "libgcc_s.sl -> libgcc_s.4", and # we patch it to also set the 'internal name' (=soname) (gcc-PR40913). if [[ ${libname} == 'gcc_s' ]]; then if [[ -n $(ls "${sourcedir}"/lib${libname}.[0-9] 2>/dev/null) ]]; then cp -fpP "${sourcedir}"/lib${libname}.[0-9] "${targetdir}" || return 1 fi fi # we do not need the unversioned lib, as linking # is done against the used gcc's private copy. rm -f "${targetdir}"/lib${libname}.${LIBSUFFIX} || return 1 fi } finish_runtime_dir() { finish_runtime_dir_elf "$@" } ;; *) LIBSUFFIX="so" do_single_runtime() { do_single_runtime_elf "$@" } finish_runtime_dir() { finish_runtime_dir_elf "$@" } ;; esac do_single_runtime_elf() { local sourcedir=$1; shift local libname=$1; shift local targetdir=$1; shift local finaldir=$1; shift # when using some simple shell script wrappers (again :)), # there may be no libs around! if [[ -n $(ls "${sourcedir}"/lib${libname}.*${LIBSUFFIX}* 2>/dev/null) ]]; then cp -fpP "${sourcedir}"/lib${libname}.*${LIBSUFFIX}* "${targetdir}" || return 1 # we do not need the unversioned lib, as linking # is done against the used gcc's private copy. rm -f "${targetdir}"/lib${libname}.${LIBSUFFIX} || return 1 fi } finish_runtime_dir_elf() { local sourcedir=$1; shift local targetdir=$1; shift local cleanup=$1; shift if [[ ${cleanup} == clean ]]; then for f in "${targetdir}"/*; do [[ ${f} == ${sourcedir} ]] && continue [[ -e "${sourcedir}/${f##*/}" ]] && continue rm -f "${f}" done fi # move symlinks first: # because of file ordering, the real files may be # moved before the symlinks, causing the symlinks # going broken. for f in "${sourcedir}"/*; do [[ -e ${f} && -L ${f} ]] || continue # use backups: hpux cannot overwrite sharedlibs in use: "Text file busy" rm -f "${targetdir}"/${f##*/}*'~' >/dev/null 2>&1 mv -f --backup=numbered --suffix='~' "${f}" "${targetdir}"/${f##*/} || return 1 rm -f "${targetdir}"/${f##*/}*'~' >/dev/null 2>&1 done for f in "${sourcedir}"/*; do [[ -f "${f}" ]] || continue # use backups: hpux cannot overwrite sharedlibs in use: "Text file busy" rm -f "${targetdir}"/${f##*/}*'~' >/dev/null 2>&1 mv -f --backup=numbered --suffix='~' "${f}" "${targetdir}"/${f##*/} || return 1 rm -f "${targetdir}"/${f##*/}*'~' >/dev/null 2>&1 done rmdir "${sourcedir}" } # We don't rely on iteration order here. local GCC_PROFILES=$(LC_ALL="C" ls ${GCC_ENV_D}/${CHOST}-*) local targetdirs= GCC_PATH= LDPATH= for x in ${GCC_PROFILES} ; do unset GCC_PATH LDPATH eval $( source_profile "${x}" echo "GCC_PATH='${GCC_PATH}'" echo "LDPATH='${LDPATH%%:*}'" ) pushd "${ROOT%/}${LDPATH}" > /dev/null || return 1 local donelibs= lib= gcclib= for lib in lib*.${LIBSUFFIX}; do gcclib=${lib#lib} gcclib=${gcclib%.${LIBSUFFIX}} gcclib=${gcclib%%.[0-9]*} # we need the unversioned libname. [[ ${donelibs} != *" ${gcclib} "* ]] || continue donelibs="${donelibs} ${gcclib} " [[ ${targetdirs} == *":${dstlibgcc},clean:"* ]] || targetdirs="${targetdirs}:${dstlibgcc},clean:" do_single_runtime \ "${ROOT%/}${LDPATH}" \ ${gcclib} \ "${dstlibgcc}"/${temporary} \ "${dstlibgcc}" \ || return 1 done popd > /dev/null done local clean= targetdir= local save_IFS=$IFS IFS=: for targetdir in ${targetdirs}; do IFS=${save_IFS} [[ -n ${targetdir} ]] || continue # eventually cleanup old files clean=${targetdir##*,} targetdir=${targetdir%,*} finish_runtime_dir \ "${targetdir}"/${temporary} \ "${targetdir}" \ ${clean} \ || return 1 done IFS=${save_IFS} } switch_profile() { local OLD_CC_COMP OLD_CC_COMP_VERSION OLD_GCC_PATH OLD_GCC_VER local GCC_PATH # Make sure we have write access to the dirs. Do not require `root` # so that we work with prefix/cross/etc... setups that run as user. # # [It's important we use ${ENV_D} and not e.g. ${EROOT} because for, say # SELinux, we may not actually be able to write to ${EROOT}, but would # be allowed for specific paths like the gcc wrappers we need to # modify. bug #823203.] [[ ! -w ${ENV_D} ]] && die "need write access to ${ENV_D}" if is_cross_compiler ; then ebegin "Switching cross-compiler to ${CC_COMP}" else ebegin "Switching native-compiler to ${CC_COMP}" fi # Setup things properly again for this profile unset GCC_SPECS LDPATH MULTIOSDIRS source_profile "${GCC_ENV_D}/${CC_COMP}" # Support older configs that did not setup MULTIOSDIRS for us. : ${MULTIOSDIRS:=../${GENTOO_LIBDIR}} # Ignore active profile errors here since we're switching away OLD_CC_COMP=$(get_current_profile 2>/dev/null) if [[ -f ${GCC_ENV_D}/${OLD_CC_COMP} ]] ; then OLD_GCC_PATH=$(show_var GCC_PATH "${GCC_ENV_D}/${OLD_CC_COMP}") OLD_GCC_VER=$(show_var GCC_VER "${GCC_ENV_D}/${OLD_CC_COMP}") fi OLD_CC_COMP_VERSION=${OLD_GCC_VER:-$(chop_gcc_ver_spec ${OLD_CC_COMP})} # GCC_SPECS have long been stable, and people messing with # them know better than to install bad paths, so don't bother # with sanity checks anymore. echo "CURRENT=${CC_COMP}" > "${GCC_ENV_D}/config-${CTARGET}" # Give native configs slight distinction from cross-compilers # by giving it higher priority. local envd envd_num envd_changed=0 is_cross_compiler && envd_num="05" || envd_num="04" envd="${ENV_D}/${envd_num}gcc-${CTARGET}" cat <<-EOF > "${envd}.tmp" # Autogenerated by 'gcc-config'. EOF if ! is_cross_compiler ; then # Only write GCC_SPECS for the native compiler. #420097 # Otherwise, the env.d of cross-compilers come after the # native one and overrides the native setting. Further, # we don't support GCC_SPECS with cross-compilers, so # writing out that settings doesn't make much sense. printf 'GCC_SPECS="%s"\n' "${GCC_SPECS}" >> "${envd}.tmp" # Regardless of the profile selected, keep the runtime lookup # paths stable. Otherwise, all the apps that were built with # a new compiler will start trying to use older versions of # the libs, and life gets sad. We work off the assumption # that every shared library gcc ships is ABI compatible (as # is the point of SONAMEs). We don't have to worry about # static libraries here as gcc itself will take care of # linking against its own internal paths first. #297685 local MY_LDPATH MY_LDPATH=$(${SED} -n \ -e '/^LDPATH=/{s|LDPATH=||;s|"||g;s|:|\n|g;p}' \ $(version_sorted_paths "${GCC_ENV_D}"/${CHOST}-* | tac) ) # Pass all by default awk '!/^(STDCXX_INCDIR|LDPATH|CC|CXX|CTARGET|GCCBITS|GCC_SPECS|GCC_PATH|MULTIOSDIRS)=/ {print $0}' \ "${GCC_ENV_D}/${CC_COMP}" >> "${envd}.tmp" if [[ -d ${EROOT}/etc/ld.so.conf.d ]] ; then echo "${MY_LDPATH}" > "${EROOT}"/etc/ld.so.conf.d/05gcc-${CTARGET}.conf else echo "LDPATH=\"${MY_LDPATH}\"" >> "${envd}.tmp" fi # Punt old files; maybe globs too much, but oh well # 'NATIVE' and '.NATIVE' were used by gcc-wrapper before Aug 2018 # and are not used as wrapper is removed. # '.NATIVE' was created before Sept 2019. # We clean up both for now. Should be safe to remove in 2021. rm -f \ "${GCC_ENV_D}/NATIVE" "${GCC_ENV_D}/.NATIVE" \ "${ENV_D}/05gcc" "${ENV_D}/05gcc-${CTARGET}" \ "${ENV_D}/05gcc-${CTARGET}"-* "${GCC_ENV_D}/config-${CTARGET}"-* # Relocate random crap local x libdir pkgconfdir local mver=${CC_COMP_VERSION:0:3} for libdir in ${MULTIOSDIRS//:/ } ; do pkgconfdir="${EROOT}/usr/lib/${libdir}/pkgconfig" for x in "" "-${mver}" ; do x="${pkgconfdir}/libgcj${x}.pc" if [[ -e ${pkgconfdir}/libgcj-${CC_COMP_VERSION}.pc ]] ; then ln -sf libgcj-${CC_COMP_VERSION}.pc "${x}" else # Maybe we selected a version that lacks gcj support. rm -f "${x}" fi done # Clean out anything left over from older versions. #430932 find "${pkgconfdir}"/libgcj*.pc -xtype l -delete 2>/dev/null done # Only update the file if it already exists to allow us to # walk it back if necessary by dropping it from clang-common. # See bug #868639 for background. if [[ -f "${EROOT}/etc/clang/gentoo-gcc-install.cfg" ]] ; then local gcc_lib_path="$(get_lib_path)" gcc_lib_path="${gcc_lib_path%%:*}" cat > "${EROOT}/etc/clang/gentoo-gcc-install.cfg.tmp" <<-EOF # This file is maintained by gcc-config. # It is used to specify the selected GCC installation. --gcc-install-dir="${gcc_lib_path}" EOF mv_if_diff "${EROOT}/etc/clang/gentoo-gcc-install.cfg.tmp" "${EROOT}/etc/clang/gentoo-gcc-install.cfg" fi prefix_copy_gcc_libs handle_split_usr : $(( envd_changed += $? )) mv_if_diff "${envd}.tmp" "${envd}" : $(( envd_changed += $? )) else # cross-case # env.d file is empty since Aug 2018 and is cleaned up by # gcc-config since Sept 2019. Should be safe to remove in 2021. rm -f "${envd}.tmp" "${envd}" fi update_wrappers ${CTARGET} # Update LTO plugin for GCC. Supported as of binutils 2.25. local BFD_PLUGINS_DIR local LIBLTO_PLUGIN if is_cross_compiler; then BFD_PLUGINS_DIR="${EROOT}usr/${CHOST}/${CTARGET}/binutils-bin/lib/bfd-plugins" LIBLTO_PLUGIN="../../../../../libexec/gcc/${CTARGET}/${CC_COMP_VERSION}/liblto_plugin.so" else BFD_PLUGINS_DIR="${EROOT}usr/${CHOST}/binutils-bin/lib/bfd-plugins" LIBLTO_PLUGIN="../../../../libexec/gcc/${CTARGET}/${CC_COMP_VERSION}/liblto_plugin.so" fi mkdir -p "${BFD_PLUGINS_DIR}" ln -sf "${LIBLTO_PLUGIN}" "${BFD_PLUGINS_DIR}" if [[ ${ROOT} == "/" ]] && \ [[ ${FORCE} == "yes" || ${envd_changed} -gt 0 ]] then # in case python is broken ... if ! env-update ; then echo "" ewarn "env-update failed to work properly; making sure ld.so.conf paths" ewarn "are setup properly. Please rerun gcc-config with the -f option." echo "" if [[ -z ${EPREFIX} ]] ; then if [[ ! -d /etc/ld.so.conf.d ]] ; then show_var LDPATH "${ROOT}"/etc/env.d/05gcc-${CTARGET} \ | ${SED} -e 's|:|\n|g' >> /etc/ld.so.conf fi ldconfig fi fi else envd_changed=0 fi eend 0 # This is needed mainly for MANPATH and INFOPATH updates. if [[ ${envd_changed} -ne 0 ]] ; then echo ewarn "If you intend to use the gcc from the new profile in an already" ewarn "running shell, please remember to do:" echo ewarn " . ${EPREFIX}/etc/profile" echo fi return 0 } get_current_profile() { local conf="${GCC_ENV_D}/config-${CTARGET}" if [[ ! -f ${conf} ]] ; then eerror "${argv0}: No gcc profile is active!" return 1 fi source_var CURRENT "${conf}" if [[ -z ${CURRENT} ]] ; then eerror "${argv0}: No gcc profile is active!" return 1 elif [[ ! -f ${GCC_ENV_D}/${CURRENT} ]] ; then eerror "${argv0}: Active gcc profile is invalid!" return 1 fi echo "${CURRENT}" return 0 } list_profiles() { local i=0 local filter= if [[ ${ROOT} != "/" ]] ; then echo "Using gcc-config info in ${ROOT}" fi if [[ ! -f ${GCC_ENV_D}/config-${CTARGET} ]] ; then # get_current_profile already warns #eerror "${argv0}: No gcc profile is active; please select one!" filter=${CTARGET} fi source_var CURRENT "${GCC_ENV_D}"/config-${CTARGET} CURRENT_NATIVE=${CURRENT} local target= for x in $(version_sorted_paths "${GCC_ENV_D}"/*) ; do [[ -f ${x} ]] || continue [[ ${x} == */config* ]] && continue source_var CTARGET "${x}" # Older native profiles would not set CTARGET. if [[ -z ${CTARGET} ]] ; then if [[ ${x} == */${CHOST}-* ]] ; then CTARGET=${CHOST} else ewarn "broken config file: ${x}" fi fi ((++i)) [[ -n ${filter} ]] && [[ ${filter} != ${CTARGET} ]] && continue if [[ ${target} != ${CTARGET} ]] ; then [[ ${i} -gt 1 ]] && echo target=${CTARGET} CTARGET="" fi x=${x##*/} if [[ ${x} == ${CURRENT_NATIVE} ]] ; then x="${x} ${GOOD}*${NORMAL}" elif [[ -e ${GCC_ENV_D}/config-${target} ]] ; then source_profile "${GCC_ENV_D}/config-${target}" [[ ${x} == ${CURRENT} ]] && x="${x} ${HILITE}*${NORMAL}" fi echo " [${i}] ${x}" done } print_environ() { local ENV_CMD SET_ELEMENT case ${SHELL} in */csh|*/tcsh) ENV_CMD="setenv" SET_ELEMENT=" " ;; *) ENV_CMD="export" SET_ELEMENT="=" ;; esac local var for var in GCC_SPECS GCC_PATH ; do local ${var} source_var ${var} "${GCC_ENV_D}/${CC_COMP}" done ( [[ -n ${GCC_PATH} ]] && PATH=${GCC_PATH}:${PATH} for var in PATH GCC_SPECS ; do echo "${ENV_CMD} ${var}${SET_ELEMENT}\"${!var}\"" done ) } get_bin_path() { show_var GCC_PATH "${GCC_ENV_D}/${CC_COMP}" ; } get_lib_path() { show_var LDPATH "${GCC_ENV_D}/${CC_COMP}" ; } split_gcc_ver() { # Split up the gcc profile into components: # TARGET-VER[-specs] -> TARGET VER [specs] # arm-linux-3.3.6 -> arm-linux 3.3.6 # x86_64-linux-4.0.1-pre1234 -> x86_64-linux 4.0.1-pre1234 # sh-linux-3.4.4-hardened -> sh-linux 3.4.4 hardened # # So below we will start at the end and run a small state machine ... # specs [3] # accept everything # specs -> version transition [3->2] # when we find a version component # version [2] # accept only version components (see the regex) # version -> target transition [2->1] # when we hit a non version component # target [1] # accept everything we have left # echo "$@" | awk -F- ' function pushit(onme, pushee) { return (onme == "" ? pushee : pushee"-"onme); } { state=3 targ="" ver="" spec="" for (i=NF; i > 0; --i) { if (state >= 2) { if ($i ~ /^(alpha|beta|pre|rc|p)?[[:digit:].]+$/) { ver=pushit(ver, $i) state=2 } else if (state == 3) spec=pushit(spec, $i) else state=1 } if (state == 1) targ = pushit(targ, $i) } if (targ == "") { if (ver == "") { ver=spec spec="" } targ=ver ver="" } print targ " " ver (spec != "" ? " " spec : "") }' } chop_gcc_ver_spec() { local splitTED=$(split_gcc_ver "$@") # target ver spec splitTED=${splitTED#* } # ver spec echo ${splitTED/ /-} # ver-spec } set_doit() { [[ -n ${DOIT} ]] && die "too many actions selected!" DOIT=$1 } DOIT="" FORCE="no" CC_COMP= ENV_D="${EROOT}etc/env.d" GCC_ENV_D="${ENV_D}/gcc" USE_NATIVE_LINKS="@USE_NATIVE_LINKS@" USE_CC_WRAPPERS="@USE_CC_WRAPPERS@" for x in "$@" ; do case "${x}" in # Only use specified compiler if one is not already selected. -O|--use-old) : ${CTARGET:=$(try_real_hard_to_find_CHOST)} if get_current_profile &>/dev/null ; then CC_COMP=$(get_current_profile) else die "No profile selected, unable to utilize --use-old" fi ;; -f|--force) FORCE="yes" ;; -c|--get-current-profile) set_doit get_current_profile ;; -l|--list-profiles) set_doit list_profiles ;; -S|--split-profile) if [[ ( $1 != "-S" && $1 != "--split-profile" ) || $# -eq 1 ]] ; then usage 1 fi shift # push -S out for x in "$@" ; do split_gcc_ver ${x} done exit 0 ;; -E|--print-environ) set_doit print_environ ;; -B|--get-bin-path) set_doit get_bin_path ;; -L|--get-lib-path) set_doit get_lib_path ;; -x|--debug) set -x ;; -C|--nocolor) # nothing to do; functions.sh parsed this for us ;; -h|--help) usage 0 ;; -V|--version) echo "${argv0}: @PV@" exit 0 ;; --enable-native-links) USE_NATIVE_LINKS="yes" ;; --disable-native-links) USE_NATIVE_LINKS="no" ;; --enable-cc-wrappers) USE_CC_WRAPPERS="yes" ;; --disable-cc-wrappers) USE_CC_WRAPPERS="no" ;; -*) die "Invalid switch! Run ${argv0} without parameters for help." ;; *) if [[ -n ${CC_COMP} ]] ; then die "Too many arguments! Run ${argv0} without parameters for help." fi if [[ -z $(echo ${x} | tr -d '[:digit:]') ]] ; then # User gave us a profile index number from '--list-profiles' i=1 for y in $(version_sorted_paths "${GCC_ENV_D}"/*) ; do [[ -f ${y} ]] || continue [[ ${y} == */config* ]] && continue if [[ -f ${y} ]] && [[ ${x} == ${i} ]] ; then CC_COMP=${y##*/} break fi ((++i)) done if [[ -z ${CC_COMP} ]] ; then die "Could not locate profile #$x !" fi else # User gave us "latest" or "-latest". if [[ ${x} == latest ]]; then get_chost x=$(version_sorted_paths "${GCC_ENV_D}"/${CHOST}-* | tail -1) elif [[ ${x} == *-latest ]]; then x=$(version_sorted_paths "${GCC_ENV_D}"/${x%-latest}-* | tail -1) fi # User gave us a full , or x=${x##*/} if [[ ${DOIT} == "get_current_profile" && -z $(ls "${GCC_ENV_D}"/${x}-* 2>/dev/null) ]] || \ [[ ${DOIT} != "get_current_profile" && ! -f ${GCC_ENV_D}/${x} ]] then # Maybe they just gave us a . Infer . get_chost if [[ -f ${GCC_ENV_D}/${CHOST}-${x} ]] ; then x=${CHOST}-${x} else die "Could not locate '$x' in '${GCC_ENV_D}/' !" fi fi CC_COMP=${x} fi ;; esac done [[ -z ${DOIT}${CC_COMP} ]] && usage 1 : ${DOIT:="switch_profile"} get_chost [[ ${DOIT} == "get_current_profile" ]] \ && : ${CTARGET:=${CC_COMP:-${CHOST}}} \ || : ${CTARGET:=${CHOST}} if [[ -z ${CC_COMP} ]] ; then CC_COMP=$(get_current_profile) if [[ $? -ne 0 ]] ; then echo "${CC_COMP}" list_profiles exit 1 fi fi if [[ ${DOIT} != "get_current_profile" ]] ; then GCC_LIB=$( get_lib_path | \ ${SED} -e "s|${EPREFIX:-/}/*|/|g" | \ awk -F/ '{ print "/"$2"/"$3"/"$4"/" }' ) # For people who insist on using funky version strings ("4.6.x" # rather than "4.6.2"), allow them to manually specify it. source_var GCC_VER "${GCC_ENV_D}/${CC_COMP}" CC_COMP_VERSION=${GCC_VER:-$(chop_gcc_ver_spec ${CC_COMP})} CC_COMP_TARGET=$(show_var CTARGET "${GCC_ENV_D}/${CC_COMP}") if [[ -z ${CC_COMP_TARGET} ]] ; then # Native configs don't have CTARGET in there. CC_COMP_TARGET=${CC_COMP%-${CC_COMP_VERSION}*} fi if [[ ! -d ${EROOT}/${GCC_LIB}/${CC_COMP_TARGET}/${CC_COMP_VERSION} ]] ; then CC_COMP_VERSION=${CC_COMP_VERSION%-*} fi if [[ ! -f ${GCC_ENV_D}/${CC_COMP} ]] ; then eerror "${argv0}: Profile '${GCC_ENV_D}/${CC_COMP}' does not exist" 1>&2 #exit 1 fi if [[ ! -d ${EROOT}/${GCC_LIB}/${CC_COMP_TARGET}/${CC_COMP_VERSION} ]] ; then eerror "${argv0}: Did not find compiler at '${EROOT}/${GCC_LIB}/${CC_COMP_TARGET}/${CC_COMP_VERSION}'" 1>&2 #exit 1 fi fi ${DOIT} # vim:ts=4