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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-1.3.6,v 1.2 2004/07/15 00:59:42 agriffis Exp $
# Author: Martin Schlemmer <azarah@gentoo.org>
source /etc/init.d/functions.sh || {
echo "$0: Could not source /etc/init.d/functions.sh!"
exit 1
}
usage() {
cat << "USAGE_END"
Usage: gcc-config [options] [CC Profile]
Change the current cc/gcc profile, or give info about profiles.
Options:
-O, --use-old Use the old profile if one was selected.
-P, --use-portage-chost Only set to given profile if its CHOST is the
same as that set for portage in /etc/make.conf
(or one of other portage config files...).
-c, --get-current-profile Print current used gcc profile.
-l, --list-profiles Print a list of available profiles.
-E, --print-environ Print environment that can be used to setup the
current gcc profile, or a specified one.
-B, --get-bin-path Print path where binaries of the given/current
profile are located.
-L, --get-lib-path Print path where libraries of the given/current
profile are located.
-X, --get-stdcxx-incdir Print path where g++ include files of the
given/current profile are located.
Profile names are of the form: <CHOST>-<gcc version>
For example: i686-pc-linux-gnu-3.2.1
USAGE_END
exit 1
}
if [ "$#" -lt 1 ]
then
usage
fi
HAVE_WHICH="no"
if [ -n "$(which which 2> /dev/null)" ]
then
HAVE_WHICH="yes"
fi
find_path() {
[ -z "$1" ] && return 0
if [ "${HAVE_WHICH}" = "yes" ]
then
local fullpath="$(which $1 2> /dev/null)"
if [ -x "${fullpath}" ]
then
echo "${fullpath}"
return 0
fi
fi
for x in /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin
do
if [ -x "${x}/$1" -a -r "${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="$(find_path env-update)"
}
CC_COMP=
get_real_chost() {
[ -n "${REAL_CHOST}" ] && return 0
# Use absolute path until all protage versions have portageq in /usr/bin
export REAL_CHOST="$(/usr/lib/portage/bin/portageq envvar CHOST)"
if [ -z "${REAL_CHOST}" ]
then
eerror "$0: Could not get portage CHOST!"
return 1
fi
}
switch_profile() {
local MY_LDPATH=
local GCC_PROFILES=
local OLD_CC_COMP=
local GCC_BIN_PATH=
if [ -r /etc/env.d/gcc/config ]
then
source /etc/env.d/gcc/config
if [ -n "${CURRENT}" ]
then
OLD_CC_COMP="${CURRENT}"
fi
fi
if [ "$(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
# 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} /etc/env.d/gcc/ -name "${REAL_CHOST}-*")"
GCC_PROFILES="${GCC_PROFILES/\/etc\/env.d\/gcc\/${CC_COMP}}"
GCC_PROFILES="/etc/env.d/gcc/${CC_COMP} ${GCC_PROFILES}"
# Extract all LDPATH's for our CHOST
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 ${LDPATH}
do
if [ -z "${MY_LDPATH}" ]
then
if [ -d "${sub_ldpath}" ]
then
MY_LDPATH="${sub_ldpath}"
fi
else
if [ -d "${sub_ldpath}" ]
then
MY_LDPATH="${MY_LDPATH}:${sub_ldpath}"
fi
fi
done
export IFS="${old_IFS}"
fi
done
# Setup things properly again for this profile
source "/etc/env.d/gcc/${CC_COMP}"
# Setup /etc/env.d/05gcc
${AWK} '!/^STDCXX_INCDIR=|^LDPATH=/ {print $0}' \
"/etc/env.d/gcc/${CC_COMP}" > /etc/env.d/05gcc
# Add our custom LDPATH
echo "LDPATH=\"${MY_LDPATH}\"" >> /etc/env.d/05gcc
# Make sure we do not recreate /lib/cpp and /usr/bin/cc ...
# echo "DISABLE_GEN_GCC_WRAPPERS=\"yes\"" >> /etc/env.d/05gcc
echo "CURRENT=${CC_COMP}" > /etc/env.d/gcc/config
# Save PATH
GCC_BIN_PATH="${PATH}"
# Fix environment
source /etc/profile
# These might not be installed, and we want to update the mtime
# for ccache and distcc anyhow ...
${RM} -f /lib/cpp
${CP} -f /usr/lib/gcc-config/wrapper /lib/cpp
for x in gcc cpp cc c++ g++ f77 gcj \
${REAL_CHOST}-gcc ${REAL_CHOST}-c++ ${REAL_CHOST}-g++ \
${REAL_CHOST}-f77 ${REAL_CHOST}-gcj
do
# Make sure we have no stale wrappers
${RM} -f "/usr/bin/${x}"
if [ -x "${GCC_BIN_PATH}/${x}" -o \
"${x}" = "c++" -o "${x}" = "${REAL_CHOST}-c++" -o \
"${x}" = "cpp" -o "${x}" = "cc" ]
then
# Only install a wrapper if the binary exists ...
${CP} -f /usr/lib/gcc-config/wrapper "/usr/bin/${x}"
if [ "${OLD_CC_COMP}" != "${CC_COMP}" ]
then
${TOUCH} -m "/usr/bin/${x}"
fi
fi
done
${ENV_UPDATE} &> /dev/null
eend 0
if [ "${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() {
if [ ! -f /etc/env.d/gcc/config ]
then
eerror "$0: No gcc profile is active!"
return 1
fi
source /etc/env.d/gcc/config
if [ -z "${CURRENT}" ]
then
eerror "$0: No gcc profile is active!"
return 1
fi
echo "${CURRENT}"
return 0
}
list_profiles() {
local i=1
if [ ! -f /etc/env.d/gcc/config ]
then
eerror "$0: No gcc profile is active!"
return 1
fi
for x in /etc/env.d/gcc/*
do
if [ -f "${x}" -a "${x}" != "/etc/env.d/gcc/config" ]
then
echo "[${i}] ${x##*/}"
i=$((i + 1))
fi
done
}
print_environ() {
local OLDPATH="${PATH}"
local ENV_CMD=
local SET_ELEMENT=
source "/etc/env.d/gcc/${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}:${OLDPATH}\""
# if [ -z "${LD_LIBRARY_PATH}" ]
# then
# echo "${ENV_CMD} LD_LIBRARY_PATH${SET_ELEMENT}\"${LDPATH}\""
# else
# echo "${ENV_CMD} LD_LIBRARY_PATH${SET_ELEMENT}\"${LDPATH}:${LD_LIBRARY_PATH}\""
# fi
echo "${ENV_CMD} CC${SET_ELEMENT}\"${CC}\""
echo "${ENV_CMD} CXX${SET_ELEMENT}\"${CXX}\""
}
get_bin_path() {
source "/etc/env.d/gcc/${CC_COMP}"
echo "${PATH}"
return 0
}
get_lib_path() {
source "/etc/env.d/gcc/${CC_COMP}"
echo "${LDPATH}"
return 0
}
get_stdcxx_incdir() {
source "/etc/env.d/gcc/${CC_COMP}"
echo "${LDPATH}/include/${STDCXX_INCDIR}"
return 0
}
NEED_ACTION="yes"
DOIT="switch_profile"
CHECK_CHOST="no"
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
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 [ -n "`echo ${x} | gawk '/^[[:digit:]]*$/ { print }'`" ]
then
i=1
for y in /etc/env.d/gcc/*
do
[ "${y}" = "/etc/env.d/gcc/config" ] && continue
if [ -f "${y}" -a "${x}" -eq "${i}" ]
then
CC_COMP="${y##*/}"
break
else
i=$((i + 1))
fi
done
else
CC_COMP="${x}"
fi
fi
;;
esac
done
if [ "${DOIT}" = "switch_profile" -a -z "${CC_COMP}" ]
then
usage
fi
if [ -z "${CC_COMP}" ]
then
if get_current_profile &> /dev/null
then
CC_COMP="$(get_current_profile)"
else
eerror "$0: No default profile setup!"
exit 1
fi
fi
if [ ! -d "/usr/lib/gcc-lib/${CC_COMP%-*}/${CC_COMP##*-}" -o \
! -f "/etc/env.d/gcc/${CC_COMP}" ]
then
eerror "$0: Profile does not exist!"
exit 1
fi
if [ "${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
|