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#!/bin/bash
# Copyright 1999-2004 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-1.3.9,v 1.4 2005/01/19 23:26:13 vapier Exp $
# Author: Martin Schlemmer <azarah@gentoo.org>
trap ":" INT QUIT TSTP
source /etc/init.d/functions.sh || {
echo "$0: Could not source /etc/init.d/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.
-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.
-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="$(find_path cat)"
AWK="$(find_path gawk)"
GREP="$(find_path grep)"
FIND="$(find_path find)"
CHMOD="$(find_path chmod)"
TOUCH="$(find_path touch)"
ENV_UPDATE="$(find_path env-update)"
}
get_real_chost() {
[[ -n ${REAL_CHOST} ]] && return 0
export REAL_CHOST="$(env -u CHOST portageq envvar CHOST)"
if [[ -z ${REAL_CHOST} ]] ; then
eerror "$0: Could not get portage CHOST!"
return 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 "$0: Must be root."
exit 1
fi
ebegin "Switching to ${CC_COMP} compiler"
# Sourcing /etc/env.d/gcc/${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} "${GCC_ENV_D}" -name "${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
# 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}-{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/${x}"{32,64}
# Only install a wrapper if the binary exists ...
# We want to figure out the 'reference file' for each
# wrapper (the binary we're 'wrapping') so that we can
# sync mtimes together. This makes things like ccache
# happy. See Bug #70548 for more info.
local ref=${ROOT}/${GCC_BIN_PATH}/${x}
[[ ${x} = "cc" ]] && ref=${ROOT}/${GCC_BIN_PATH}/gcc
if [[ -x ${ref} ]] ; then
${CP} -f "${ROOT}/usr/lib/gcc-config/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 ${GCCBITS} ; do
cp -f "${ROOT}/usr/lib/gcc-config/wrapper" \
"${ROOT}/usr/bin/${x}${bits}"
done
fi
fi
done
# Only install cpp if switching to a native one
if ! is_cross_compiler ; then
${RM} -f "${ROOT}/lib/cpp"
${CP} -f "${ROOT}/usr/lib/gcc-config/wrapper" "${ROOT}/lib/cpp"
fi
# We need to make sure that libgcc_s.so makes 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/show_bug.cgi?id=60190
if ! is_cross_compiler && [[ -e ${ROOT}/${LDPATH}/libgcc_s.so ]] ; then
rm -f "${ROOT}"/lib/libgcc_so.so*
cp -a "${ROOT}/${LDPATH}"/libgcc_s.so* "${ROOT}"/lib/
fi
if [[ ${ROOT} = "/" ]] && [[ ${OLD_CC_COMP} != ${CC_COMP} ]] ; then
${ENV_UPDATE} &>/dev/null
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 [[ -f ${GCC_ENV_D}/config-${CC_COMP} ]] ; then
conf="${conf}-${CC_COMP}"
fi
if [[ ! -f ${conf} ]] ; then
eerror "$0: No gcc profile is active!"
return 1
fi
source "${conf}"
if [[ -z ${CURRENT} ]] ; then
eerror "$0: No gcc profile is active!"
return 1
fi
echo "${CURRENT}"
return 0
}
list_profiles() {
local i=1
if [[ ! -f ${GCC_ENV_D}/config ]] ; then
eerror "$0: No gcc profile is active; please select one!"
else
get_current_profile >/dev/null
fi
if [[ ${ROOT} != "/" ]] ; then
echo "Using gcc-config info in ${ROOT}"
fi
for x in "${GCC_ENV_D}"/* ; do
if [[ -f ${x} ]] && [[ ${x/\/config} = ${x} ]] ; then
x=${x##*/}
[[ ${x} = ${CURRENT} ]] && x="${x} *"
echo "[${i}] ${x}"
i=$((i + 1))
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
}
NEED_ACTION="yes"
DOIT="switch_profile"
CHECK_CHOST="no"
CC_COMP=
[[ -z ${ROOT} ]] && ROOT="/"
[[ ${ROOT:-1} != "/" ]] && ROOT="${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)"
fi
;;
-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
;;
-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
exit 0
;;
-v|--version)
echo "gcc-config-PORTAGE-VERSION"
exit 0
;;
-*)
eerror "$0: Invalid switch! Run $0 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
[[ ${y/\/config} != ${y} ]] && continue
if [[ -f ${y} ]] && [[ ${x} = ${i} ]] ; then
CC_COMP="${y##*/}"
break
fi
i=$((i + 1))
done
else
# User gave us a full HOST-gccver
x=${x##*/}
if [[ ${DOIT} != "get_current_profile" ]] && \
[[ ! -f ${GCC_ENV_D}/${x} ]]
then
eerror "$0: Could not locate '$x' in '${GCC_ENV_D}/'!"
exit 1
fi
CC_COMP="${x}"
fi
else
eerror "$0: Too many arguments! Run $0 without parameters for help."
exit 1
fi
;;
esac
done
if [[ ${DOIT} = "switch_profile" ]] && [[ -z ${CC_COMP} ]] ; then
usage 1
fi
if [[ -z ${CC_COMP} ]] ; then
if get_current_profile &>/dev/null
then
CC_COMP="$(get_current_profile)"
else
list_profiles
exit 1
fi
fi
if [[ ${DOIT} != "get_current_profile" ]] ; then
CC_COMP_NO_SPECS=$(echo ${CC_COMP} | awk -F- '{ print $1"-"$2"-"$3"-"$4"-"$5 }')
GCC_LIB=$(source "${GCC_ENV_D}/${CC_COMP}"
cmd_setup
echo ${LDPATH} | ${AWK} -F/ '{ print "/"$2"/"$3"/"$4"/" }')
if [[ ! -d ${ROOT}/${GCC_LIB}/${CC_COMP_NO_SPECS%-*}/${CC_COMP_NO_SPECS##*-} ]] || \
[[ ! -f ${GCC_ENV_D}/${CC_COMP} ]]
then
eerror "$0: 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%-*} != ${REAL_CHOST} ]] && exit 0
fi
eval ${DOIT}
# vim:ts=4
|