Make libgcc updates atomic #150257 by Diego.

(Portage version: 2.1.2_pre3-r4)

3 files changed, 716 insertions, 1 deletions

diff --git a/sys-devel/gcc-config/files/digest-gcc-config-1.3.13-r4 b/sys-devel/gcc-config/files/digest-gcc-config-1.3.13-r4
index 8b137891791f..e69de29bb2d1 100644
--- a/sys-devel/gcc-config/files/digest-gcc-config-1.3.13-r4
+++ b/sys-devel/gcc-config/files/digest-gcc-config-1.3.13-r4
@@ -1 +0,0 @@
-
diff --git a/sys-devel/gcc-config/files/digest-gcc-config-1.3.14 b/sys-devel/gcc-config/files/digest-gcc-config-1.3.14
new file mode 100644
index 000000000000..e69de29bb2d1
--- /dev/null
+++ b/sys-devel/gcc-config/files/digest-gcc-config-1.3.14
diff --git a/sys-devel/gcc-config/files/gcc-config-1.3.14 b/sys-devel/gcc-config/files/gcc-config-1.3.14
new file mode 100755
index 000000000000..dde0fce86c9b
--- /dev/null
+++ b/sys-devel/gcc-config/files/gcc-config-1.3.14
@@ -0,0 +1,716 @@
+#!/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-1.3.14,v 1.1 2006/10/19 04:01:49 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)
+}
+
+try_real_hard_to_find_CHOST() {
+	#
+	# First we read make.conf
+	#
+
+	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
+
+	if [[ -n ${ret} ]] ; then
+		echo ${ret}
+		return 0
+	fi
+
+	#
+	# Then we try /etc/env.d/gcc/config
+	#
+	if [[ -s ${ROOT}/etc/env.d/gcc/config ]] ; then
+		ret=$(split_gcc_ver $(eval $(<"${ROOT}"/etc/env.d/gcc/config) ; echo ${CURRENT}))
+		echo ${ret% *}
+	fi
+}
+
+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 ${PORTAGEQ} envvar CHOST 2>/dev/null)
+	else
+		ewarn "Python seems to be broken, attempting to locate CHOST ourselves ..."
+		export REAL_CHOST=$(try_real_hard_to_find_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 GENTOO_LIBDIR 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
+	# legacy cruft, make sure we dont leave it laying around #143205
+	${RM} -f "${ROOT}/usr/bin/${CTARGET}-cc"
+	# 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}/${libdir}"/.gcc.config.new/
+						# no need to sanity remove this as the `mv` should take
+						# care of it.  we also need this step to be completly atomic
+						# for systems that have even `mv` linked against libgcc_s.so.
+						# http://bugs.gentoo.org/150257
+						#${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
+}
+
+cmd_setup
+
+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 [[ ${NEED_ACTION} == "yes" ]] ; then
+				NEED_ACTION="no"
+				DOIT="get_stdcxx_incdir"
+			fi
+			;;
+		-h|--help)
+			usage 0
+			;;
+		-V|--version)
+			echo "gcc-config-PORTAGE-VERSION"
+			exit 0
+			;;
+		-*)
+			eerror "${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
+
+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