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gcc-config
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#!/bin/bash
# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-devel/gcc-config/files/gcc-config-1.3.13,v 1.7 2006/04/25 00:20:17 vapier Exp $
trap ":" INT QUIT TSTP
argv0=${0##*/}
source /sbin/functions.sh || {
echo "${argv0}: Could not source /sbin/functions.sh!"
exit 1
}
umask 022
usage() {
cat << "USAGE_END"
Usage: gcc-config [options] [CC Profile]
Change the current cc/gcc profile, or give info about profiles.
Options:
-O, --use-old Use the old profile if one was selected.
-f, --force Make sure all config files are regenerated.
-P, --use-portage-chost Only set to given profile if its CHOST is the
same as that set for portage in /etc/make.conf
(or one of other portage config files...).
-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.
-X, --get-stdcxx-incdir Print path where g++ include files of the
given/current profile are located.
Profile names are of the form: <CHOST>-<gcc version>
For example: i686-pc-linux-gnu-3.2.1
USAGE_END
exit $1
}
[[ $# -lt 1 ]] && usage 1
find_path() {
[[ -z $1 ]] && return 0
local fullpath="$(type -P $1)"
if [[ -x ${fullpath} ]] ; then
echo "${fullpath}"
return 0
fi
for x in /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ; do
if [[ -x ${x}/$1 ]] && [[ -r ${x}/$1 ]] ; then
echo "${x}/$1"
return 0
fi
done
return 0
}
cmd_setup() {
# Sourcing /etc/env.d/gcc/${CC_COMP} is going to mess up
# PATH among things...
CP=$(find_path cp)
RM=$(find_path rm)
MV=$(find_path mv)
LN=$(find_path ln)
CAT=$(find_path cat)
ENV=$(find_path env)
SED=$(find_path sed)
AWK=$(find_path gawk)
GREP=$(find_path grep)
FIND=$(find_path find)
CHMOD=$(find_path chmod)
TOUCH=$(find_path touch)
PYTHON=$(find_path python)
PORTAGEQ=$(find_path portageq)
ENV_UPDATE=$(find_path env-update)
}
cheap_portageq_envvar() {
local varname=$1
local conf=${ROOT}/etc/make.conf
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 $(
${SED} -n \
-e 's:[[:space:]]::g' \
-e '/^CHOST=/p' \
"${conf}"
) ; echo ${!varname}
)
fi
echo ${ret}
}
get_real_chost() {
[[ -n ${REAL_CHOST} ]] && return 0
# shortcut for switching compilers in a cross chroot
if [[ -n ${CHOST} && ${ROOT} != "/" ]] ; then
REAL_CHOST=${CHOST}
return 0
fi
# make sure portage isnt broken
if ${PYTHON} -V &>/dev/null ; then
export REAL_CHOST=$(${ENV} -i ${PORTAGEQ} envvar CHOST 2>/dev/null)
else
export REAL_CHOST=$(cheap_portageq_envvar CHOST)
fi
if [[ -z ${REAL_CHOST} ]] ; then
eerror "${argv0}: Could not get portage CHOST!"
eerror "${argv0}: You should verify that CHOST is set in one of these places:"
eerror "${argv0}: - ${ROOT}/etc/make.conf"
eerror "${argv0}: - active environment"
exit 1
fi
}
is_cross_compiler() {
get_real_chost
[[ ${CC_COMP/${REAL_CHOST}} == ${CC_COMP} ]]
}
switch_profile() {
local MY_LDPATH=
local GCC_PROFILES=
local OLD_CC_COMP=
local GCC_BIN_PATH=
if [[ "$(id -u)" -ne 0 ]] ; then
eerror "${argv0}: Must be root."
exit 1
fi
if is_cross_compiler ; then
ebegin "Switching cross-compiler to ${CC_COMP}"
else
ebegin "Switching native-compiler to ${CC_COMP}"
fi
# Sourcing /etc/env.d/gcc/${CC_COMP} is going to mess up
# PATH among things...
cmd_setup
if ! is_cross_compiler ; then
# Order our profiles to have the default first ...
# We do this so that we can have them ordered with default
# first in /etc/ld.so.conf, as the logical is that all
# compilers for default CHOST will be used to compile stuff,
# and thus we want all their lib paths in /etc/ld.so.conf ...
get_real_chost
GCC_PROFILES="$(${FIND} "${GCC_ENV_D}" -maxdepth 1 -name "${REAL_CHOST}-*" -a ! -name "${CC_COMP}")"
GCC_PROFILES="${GCC_ENV_D}/${CC_COMP} ${GCC_PROFILES}"
# Extract all LDPATH's for our CHOST
MY_LDPATH=""
for x in ${GCC_PROFILES} ; do
if [[ -f ${x} ]] ; then
source "${x}"
# Handle LDPATH's that have multiple directories
local old_IFS="${IFS}"
export IFS=":"
local sub_ldpath=
for sub_ldpath in ${LDPATH} ; do
if [[ -d ${sub_ldpath} ]] ; then
if [[ ${MY_LDPATH/:${sub_ldpath}} == ${MY_LDPATH} ]] ; then
MY_LDPATH="${MY_LDPATH}:${sub_ldpath}"
fi
fi
done
export IFS="${old_IFS}"
fi
done
MY_LDPATH="${MY_LDPATH:1}" # trim leading :
fi
# Setup things properly again for this profile
unset GCC_SPECS LDPATH
source "${GCC_ENV_D}/${CC_COMP}"
OLD_CC_COMP=$(get_current_profile)
CTARGET="${CTARGET:-${REAL_CHOST}}"
# What kind of env.d entry are we going to generate ?
if is_cross_compiler ; then
# Only keep PATH/ROOTPATH
${AWK} '/^(PATH|ROOTPATH)=/ {print $0}' \
"${GCC_ENV_D}/${CC_COMP}" > "${ENV_D}/05gcc-${CTARGET}"
echo "CURRENT=${CC_COMP}" > "${GCC_ENV_D}/config-${CTARGET}"
else
# Pass all by default
${AWK} '!/^(STDCXX_INCDIR|LDPATH|CC|CXX|CTARGET|GCCBITS|GCC_SPECS)=/ {print $0}' \
"${GCC_ENV_D}/${CC_COMP}" > "${ENV_D}/05gcc"
echo "LDPATH=\"${MY_LDPATH}\"" >> "${ENV_D}/05gcc"
if [[ -n ${GCC_SPECS} ]] && [[ -e ${ROOT}/${GCC_SPECS} ]] ; then
echo "GCC_SPECS=\"${GCC_SPECS}\"" >> "${ENV_D}/05gcc"
else
# People need to rebuild their gcc or setting GCC_SPECS to
# "" will cause issues again :(
if [[ ${ROOT} != "/" ]] ; then
echo "GCC_SPECS=\"\"" >> "${ENV_D}/05gcc"
else
if ! GCC_SPECS="" /usr/bin/gcc -v &>/dev/null ; then
echo
ewarn "Your gcc has a bug with GCC_SPECS."
ewarn "Please re-emerge gcc."
ewarn "http://bugs.gentoo.org/show_bug.cgi?id=68395"
echo
else
echo "GCC_SPECS=\"\"" >> "${ENV_D}/05gcc"
fi
fi
fi
echo "CURRENT=${CC_COMP}" > "${GCC_ENV_D}/config"
fi
# Save PATH
GCC_BIN_PATH="${PATH}"
# Fix environment
source /etc/profile
umask 022
# Find the bin wrapper
local wrapper
for wrapper in lib lib lib64 lib32 lib ; do
wrapper="${ROOT}usr/${wrapper}/misc/gcc-config"
[[ -e ${wrapper} ]] && break
done
# Update the wrappers for this profile
local native="gcc cpp cc c++ g++ f77 g77 gcj"
is_cross_compiler && native=""
for x in ${native} ${CTARGET}-{cpp,gcc,c++,g++,f77,g77,gcj} ; do
# Make sure we have no stale wrappers
${RM} -f "${ROOT}/usr/bin/${x}"
[[ ${x:${#x}-3} == "gcc" || ${x:${#x}-3} == "g++" ]] \
&& ${RM} -f "${ROOT}/usr/bin/${x}"{32,64}
# Only install a wrapper if the binary exists ...
# 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.
local ref
case ${x} in
cc) ref=${ROOT}/${GCC_BIN_PATH}/gcc;;
f77) ref=${ROOT}/${GCC_BIN_PATH}/g77;;
*) ref=${ROOT}/${GCC_BIN_PATH}/${x};;
esac
if [[ -x ${ref} ]] ; then
${CP} -f "${wrapper}" "${ROOT}/usr/bin/${x}"
${TOUCH} -r "${ref}" "${ROOT}/usr/bin/${x}"
# Install 32bit and 64bit wrappers if need be
# This should probably get folded back into the wrapper ...
if [[ ${x:${#x}-3} == "gcc" ]] || [[ ${x:${#x}-3} == "g++" ]] ; then
for bits in ${GCCBITS} ; do
${CP} -f "${wrapper}" "${ROOT}/usr/bin/${x}${bits}"
done
fi
fi
done
# Only install cpp if switching to a native one
if ! is_cross_compiler && [[ ${CTARGET} != *-solaris* ]] ; then
${RM} -f "${ROOT}/lib/cpp"
${CP} -f "${wrapper}" "${ROOT}/lib/cpp"
fi
# We need to make sure that libgcc_s.so / libunwind.so make it into /lib.
# On many systems (x86/amd64/etc...), this will probably never matter,
# but on other systems (arm/mips/etc...), this is quite critical.
# http://bugs.gentoo.org/60190
#
# The funky move magic is required for proper updating of in-use files.
if ! is_cross_compiler ; then
# Need to cut out extra paths in multilib case and pray the first path
# is the "root" multilib path ... maybe some day change this to use
# `gcc -print-file-name` ...
LDPATH=${LDPATH%%:*}
for multilib in $("${ROOT}/${GCC_BIN_PATH}"/gcc -print-multi-lib); do
multiarg=${multilib#*;}
multiarg=${multiarg/@/-}
multilibdir=${multilib%;*}
libdir="lib/"$("${ROOT}/${GCC_BIN_PATH}"/gcc ${multiarg} -print-multi-os-directory)
if mkdir -p "${ROOT}/${libdir}"/.gcc.config.new ; then
for gcclib in gcc_s unwind ; do
if [[ -n $(ls "${ROOT}/${LDPATH}/${multilibdir}"/lib${gcclib}.so.* 2>/dev/null) ]]; then
${CP} -pP "${ROOT}/${LDPATH}/${multilibdir}"/lib${gcclib}.so.* "${ROOT}/${libdir}"/.gcc.config.new/
${RM} -f "${ROOT}/${libdir}"/lib${gcclib}.so*
${MV} -f "${ROOT}/${libdir}"/.gcc.config.new/* "${ROOT}/${libdir}"/
fi
done
rmdir "${ROOT}/${libdir}"/.gcc.config.new
fi
done
unset multilib
unset multilibdir
unset multiarg
unset libdir
fi
if [[ ${ROOT} == "/" ]] && [[ ${OLD_CC_COMP} != ${CC_COMP} || ${FORCE} == "yes" ]] ; 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 ""
${GREP} -h ^LDPATH= "${ROOT}"/etc/env.d/05gcc \
| ${SED} -e 's:^LDPATH=::' -e 's:"::g' -e 's|:|\n|g' \
>> /etc/ld.so.conf
ldconfig
fi
fi
eend 0
if [[ ${ROOT} == "/" ]] && [[ ${OLD_CC_COMP} != ${CC_COMP} ]] ; then
echo
ewarn "If you intend to use the gcc from the new profile in an already"
ewarn "running shell, please remember to do:"
echo
ewarn " # source /etc/profile"
echo
fi
return 0
}
get_current_profile() {
local conf="${GCC_ENV_D}/config"
if [[ -n ${CTARGET} ]] ; then
conf="${conf}-${CTARGET}"
elif [[ -n ${CC_COMP} ]] && is_cross_compiler ; then
conf="${conf}-${CC_COMP}"
fi
if [[ ! -f ${conf} ]] ; then
eerror "${argv0}: No gcc profile is active!"
return 1
fi
source "${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=1
if [[ ${ROOT} != "/" ]] ; then
echo "Using gcc-config info in ${ROOT}"
fi
if [[ ! -f ${GCC_ENV_D}/config ]] ; then
eerror "${argv0}: No gcc profile is active; please select one!"
fi
eval $(grep -s ^CURRENT= "${GCC_ENV_D}"/config)
CURRENT_NATIVE=${CURRENT}
local target=
for x in "${GCC_ENV_D}"/* ; do
if [[ -f ${x} ]] && [[ ${x/\/config} == ${x} ]] ; then
source "${x}"
if [[ ${target} != ${CTARGET} ]] ; then
[[ -n ${target} ]] && echo
target=${CTARGET}
CTARGET=""
fi
x=${x##*/}
if [[ ${x} == ${CURRENT_NATIVE} ]] ; then
x="${x} ${GOOD}*${NORMAL}"
elif [[ -e ${GCC_ENV_D}/config-${target} ]] ; then
source "${GCC_ENV_D}/config-${target}"
[[ ${x} == ${CURRENT} ]] && x="${x} ${HILITE}*${NORMAL}"
fi
echo " [${i}] ${x}"
((++i))
fi
done
}
print_environ() {
local OLDPATH="${PATH}"
local ENV_CMD=
local SET_ELEMENT=
source "${GCC_ENV_D}/${CC_COMP}"
case ${SHELL} in
*/csh|*/tsch)
ENV_CMD="setenv"
SET_ELEMENT=" "
;;
*)
ENV_CMD="export"
SET_ELEMENT="="
;;
esac
echo "${ENV_CMD} PATH${SET_ELEMENT}\"${PATH}:${OLDPATH}\""
}
get_bin_path() {
if [[ -e ${GCC_ENV_D}/${CC_COMP} ]] ; then
source "${GCC_ENV_D}/${CC_COMP}"
echo "${PATH}"
else
echo "no-config"
echo "${GCC_ENV_D}/${CC_COMP} doesnt exist" 1>&2
fi
return 0
}
get_lib_path() {
if [[ -e ${GCC_ENV_D}/${CC_COMP} ]] ; then
source "${GCC_ENV_D}/${CC_COMP}"
echo "${LDPATH}"
else
echo "no-config"
echo "${GCC_ENV_D}/${CC_COMP} doesnt exist" 1>&2
fi
return 0
}
get_stdcxx_incdir() {
if [[ -e ${GCC_ENV_D}/${CC_COMP} ]] ; then
source "${GCC_ENV_D}/${CC_COMP}"
echo "${LDPATH}/include/${STDCXX_INCDIR}"
else
echo "no-config"
echo "${GCC_ENV_D}/${CC_COMP} doesnt exist" 1>&2
fi
return 0
}
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
}
NEED_ACTION="yes"
DOIT="switch_profile"
CHECK_CHOST="no"
FORCE="no"
CC_COMP=
[[ -z ${ROOT} ]] && ROOT="/"
[[ ${ROOT:0-1} != "/" ]] && ROOT="${ROOT}/"
ENV_D="${ROOT}etc/env.d"
GCC_ENV_D="${ENV_D}/gcc"
for x in "$@" ; do
case "${x}" in
# Only use specified compiler if one is not already selected.
-O|--use-old)
if get_current_profile &>/dev/null ; then
CC_COMP="$(get_current_profile)"
else
eerror "No profile selected, unable to utilize --use-old"
exit 1
fi
;;
-f|--force)
FORCE="yes"
;;
-P|--use-portage-chost)
CHECK_CHOST="yes"
;;
-c|--get-current-profile)
if [[ ${NEED_ACTION} == "yes" ]] ; then
NEED_ACTION="no"
DOIT="get_current_profile"
fi
;;
-l|--list-profiles)
if [[ ${NEED_ACTION} == "yes" ]] ; then
NEED_ACTION="no"
DOIT="list_profiles"
fi
;;
-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)
if [[ ${NEED_ACTION} == "yes" ]] ; then
NEED_ACTION="no"
DOIT="print_environ"
fi
;;
-B|--get-bin-path)
if [[ ${NEED_ACTION} == "yes" ]] ; then
NEED_ACTION="no"
DOIT="get_bin_path"
fi
;;
-L|--get-lib-path)
if [[ ${NEED_ACTION} == "yes" ]] ; then
NEED_ACTION="no"
DOIT="get_lib_path"
fi
;;
-X|--get-stdcxx-incdir)
if [[ ${NEED_ACTION} == "yes" ]] ; then
NEED_ACTION="no"
DOIT="get_stdcxx_incdir"
fi
;;
-h|--help)
usage 0
;;
-V|--version)
echo "gcc-config-1.3.13-r2"
exit 0
;;
-*)
eerror "${argv0}: Invalid switch! Run ${argv0} without parameters for help."
exit 1
;;
*)
if [[ -z ${CC_COMP} ]] ; then
if [[ -z $(echo ${x} | tr -d '[:digit:]') ]] ; then
# User gave us a # representing the profile
i=1
for y in "${GCC_ENV_D}"/* ; do
[[ -f ${y} ]] || continue
[[ ${y/\/config} != ${y} ]] && continue
if [[ -f ${y} ]] && [[ ${x} == ${i} ]] ; then
CC_COMP=${y##*/}
break
fi
((++i))
done
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_real_chost
if [[ -f ${GCC_ENV_D}/${REAL_CHOST}-${x} ]] ; then
x=${REAL_CHOST}-${x}
else
eerror "${argv0}: Could not locate '$x' in '${GCC_ENV_D}/' !"
exit 1
fi
fi
CC_COMP=${x}
fi
else
eerror "${argv0}: Too many arguments! Run ${argv0} without parameters for help."
exit 1
fi
;;
esac
done
if [[ ${DOIT} == "switch_profile" ]] && [[ -z ${CC_COMP} ]] ; then
usage 1
fi
cmd_setup
if [[ -z ${CC_COMP} ]] ; then
CC_COMP=$(get_current_profile)
if [[ $? -ne 0 ]] ; then
echo "${CC_COMP}"
list_profiles
exit 1
fi
fi
if [[ ${DOIT} != "get_current_profile" ]] ; then
GCC_LIB=$(
source "${GCC_ENV_D}/${CC_COMP}"
echo ${LDPATH} | ${AWK} -F/ '{ print "/"$2"/"$3"/"$4"/" }'
)
CC_COMP_VERSION=$(chop_gcc_ver_spec ${CC_COMP})
CC_COMP_TARGET=${CC_COMP%-${CC_COMP_VERSION}*}
if [[ ! -d ${ROOT}/${GCC_LIB}/${CC_COMP_TARGET}/${CC_COMP_VERSION} ]]; then
CC_COMP_VERSION=${CC_COMP_VERSION%-*}
fi
if [[ ! -d ${ROOT}/${GCC_LIB}/${CC_COMP_TARGET}/${CC_COMP_VERSION} ]] || \
[[ ! -f ${GCC_ENV_D}/${CC_COMP} ]]
then
eerror "${argv0}: Profile does not exist or invalid setting for ${GCC_ENV_D}/${CC_COMP}" 1>&2
#exit 1
fi
fi
if [[ ${CHECK_CHOST} == "yes" ]] ; then
# Chosen CHOST are not the same as the real CHOST according to
# make.conf, and --use-portage-chost option was given, so do nothing
get_real_chost
CC_COMP_VERSION=$(chop_gcc_ver_spec ${CC_COMP})
CC_COMP_TARGET=${CC_COMP:0:${#CC_COMP}-${#CC_COMP_VERSION}-1}
[[ ${CC_COMP_TARGET} != ${REAL_CHOST} ]] && exit 0
fi
eval ${DOIT}
# vim:ts=4