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|
#!/bin/bash
# Copyright 2002-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# Format of /etc/env.d/gcc/ contents:
# config-<TARGET>: CURRENT=<TARGET>-<VER>
# <TARGET>-<VER>: has gcc-specific variables (provided by sys-devel/gcc)
: ${ROOT:=/}
[[ ${ROOT} != */ ]] && ROOT="${ROOT}/"
[[ ${ROOT} != /* ]] && ROOT="${PWD%/}/${ROOT}"
EPREFIX="@GENTOO_EPREFIX@"
[[ ${EPREFIX} == @*@ ]] && EPREFIX=""
EROOT="${ROOT%/}${EPREFIX}/"
cd /
trap ":" INT QUIT TSTP
argv0=${0##*/}
functions_script="${EPREFIX}/lib/gentoo/functions.sh"
source "${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"
GENTOO_LIBDIR="@GENTOO_LIBDIR@"
[[ ${GENTOO_LIBDIR} == @*@ ]] && GENTOO_LIBDIR="lib"
usage() {
cat <<-EOF
Usage: gcc-config [options] [CC Profile]
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: <CTARGET>-<version>
For example: i686-pc-linux-gnu-3.2.1
EOF
exit ${1:-1}
}
[[ $# -lt 1 ]] && usage 1
# Usage: version_sorted_paths <CHOST>
# 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 <var> <file> [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 ${ret} ]] ; then
# newer portage supports spaces between the var and =
# CHOST = "this-is-retarded"
ret=$(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 ${CHOST} ]] && return 0
export CHOST
# make sure portage isnt broken
if python -V &>/dev/null ; then
CHOST=$(portageq envvar CHOST 2>/dev/null)
else
ewarn "Python 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 <source file> <destination dir> <destination file name>
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+=( "${new_wrappers[@]}" )
# There are a few fun extra progs which we have to handle #412319
all_wrappers+=( cc:gcc f77:g77 )
fi
# Then install wrappers for anything new to this profile.
local ref
for x in "${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 ; 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 ${ref} ]] ; then
atomic_ln "${ref#${ROOT}}" "${EROOT}usr/bin" "${x}"
else
# Make sure we have no stale wrappers
rm -f "${EROOT}usr/bin/${x}"
fi
done
# legacy cruft, make sure we dont leave it laying around #143205
rm -f "${EROOT}usr/bin/${CTARGET}-cc" "${EROOT}usr/bin"/{${CTARGET}-,}g{cc,++}{32,64}
# install 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
}
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.
[[ ! -w ${EROOT} ]] && die "need write access to ${EROOT}"
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
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 ${CTARGET}
# Update LTO plugin for GCC. Supported as of binutils 2.25.
local BFD_PLUGINS_DIR
local LIBLTO_PLUGIN
LIBLTO_PLUGIN="${EROOT}usr/libexec/gcc/${CTARGET}/${CC_COMP_VERSION}/liblto_plugin.so"
if is_cross_compiler; then
BFD_PLUGINS_DIR="${EROOT}usr/${CHOST}/${CTARGET}/binutils-bin/lib/bfd-plugins"
else
BFD_PLUGINS_DIR="${EROOT}usr/${CHOST}/binutils-bin/lib/bfd-plugins"
fi
mkdir -p "${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="${ENV_D}/gcc"
USE_NATIVE_LINKS="@USE_NATIVE_LINKS@"
for x in "$@" ; 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" ;;
-*)
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 # representing the profile
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 a full HOST-gccver
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 gccver ...
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
|