#!/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/binutils-config/files/binutils-config-1.5,v 1.2 2004/12/31 10:24:58 eradicator Exp $

# Format of /etc/env.d/binutils/:
#  config-TARGET:	CURRENT=version for TARGET
#  TARGET-VER:		has a TARGET and VER variable

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: binutils-config [options] [binutils profile]
Change the current binutils profile, or give info about profiles.

Options:
  -c, --get-current-profile  Print current profile
  -l, --list-profiles        Print a list of available profiles
  -u, --uninstall            Remove all signs of specified target

Profile names are of the form:  <CHOST>-<binutils version>
For example:                    x86_64-pc-linux-gnu-2.15.92.0.2
USAGE_END
}

[[ $# -lt 1 ]] && usage && exit 1

switch_profile() {
	unset TARGET VER LIBPATH FAKE_TARGETS
	source "${ENV_D}/${PROFILE}"
	if [[ -z ${TARGET} ]] ; then
		eerror "${PROFILE} is invalid (no \$TARGET defined) :("
		return 1
	fi
	if [[ -z ${VER} ]] ; then
		eerror "${PROFILE} is invalid (no \$VER defined) :("
		return 1
	fi

	ebegin "Switching to ${PROFILE}"

	#
	# Generate binary symlinks
	# On systems that do 32bit/64bit, we need to fake an 
	# extra set of binary names (${FAKE_TARGETS})
	#
	BINPATH="/usr/${TARGET}/binutils-bin/${VER}"
	cd "${ROOT}/${BINPATH}" || exit 1
	mkdir -p "${ROOT}"/usr/${TARGET}/bin
	for x in * ; do
		ln -sf "${BINPATH}/${x}" "${ROOT}"/usr/${TARGET}/bin/${x}
		ln -sf ../${TARGET}/bin/${x} "${ROOT}"/usr/bin/${TARGET}-${x}
		if [[ ${TARGET} = "${HOST}" ]] ; then
			ln -sf ${TARGET}-${x} "${ROOT}"/usr/bin/${x}

			for fake in ${FAKE_TARGETS} ; do
				ln -sf ../${TARGET}/bin/${x} "${ROOT}"/usr/bin/${fake}-${x}
			done
		fi
	done

	#
	# Generate library / ldscripts symlinks
	#
	LIBPATH="${LIBPATH:-/usr/lib/binutils/${TARGET}/${VER}}"
	cd "${ROOT}/${LIBPATH}" || exit 1
	mkdir -p "${ROOT}"/usr/${TARGET}/lib
	if [[ -d ${ROOT}/usr/${TARGET}/lib/ldscripts ]] ; then
		# When upgrading, we need to clean up ldscripts
		rm -r "${ROOT}"/usr/${TARGET}/lib/ldscripts
	else
		rm -f "${ROOT}"/usr/${TARGET}/lib/ldscripts
	fi
	ln -sf "${LIBPATH}/ldscripts" "${ROOT}"/usr/${TARGET}/lib/ldscripts
	if [[ ${TARGET} = "${HOST}" ]] ; then
		dstlib="${ROOT}"/usr/${HOST}/lib
	else
		dstlib="${ROOT}"/usr/${HOST}/${TARGET}/lib
	fi
	mkdir -p "${dstlib}"
	for x in lib* ; do
		ln -sf "${LIBPATH}/${x}" "${dstlib}/${x}"
	done

	#
	# Generate include symlinks
	#
	INCPATH="${LIBPATH}/include"
	cd "${ROOT}/${INCPATH}" || exit 1
	if [[ ${TARGET} = "${HOST}" ]] ; then
		dstinc="${ROOT}"/usr/include
	else
		dstinc="${ROOT}"/usr/${TARGET}/include
	fi
	mkdir -p "${dstinc}"
	for x in * ; do
		ln -sf "${INCPATH}/${x}" "${dstinc}/${x}"
	done

	#
	# Make sure proper paths get updated
	#
	if [[ ${TARGET} = "${HOST}" ]] ; then
		DATAPATH="/usr/share/binutils-data/${TARGET}/${VER}"
		echo "MANPATH=${DATAPATH}/man" > "${ROOT}"/etc/env.d/05binutils
		echo "INFOPATH=${DATAPATH}/info" >> "${ROOT}"/etc/env.d/05binutils
		echo "LDPATH=/usr/${TARGET}/lib" >> "${ROOT}"/etc/env.d/05binutils
	fi

	eend 0

	echo "CURRENT=${VER}" > "${ENV_D}/config-${TARGET}"

	#
	# Regen env.d if need/can be
	#
	if [[ ${ROOT} = "/" ]] && [[ ${TARGET} = "${HOST}" ]] ; then
		env-update
		echo
		ewarn "Please remember to run:"
		echo
		ewarn "  # source /etc/profile"
		echo
	fi

	return 0
}

uninstall_target() {
	if [[ ${TARGET} = "${HOST}" ]] ; then
		eerror "$0: Refusing to uninstall native binutils"
		exit 1
	fi

	shopt -s nullglob
	PROFILE=""

	for PROFILE in "${ENV_D}"/${TARGET}-* ; do
		ewarn "Removing all signs of ${PROFILE##*/}"
		rm -f "${ENV_D}"/${PROFILE}
	done
	if [[ -z ${PROFILE} ]] ; then
		eerror "$0: No profiles exist for '${TARGET}'"
		exit 1
	fi

	rm -f "${ENV_D}"/config-${TARGET}

	for x in addr2line ar as c++filt ld nm objcopy \
	         objdump ranlib readelf size strings strip ; do
		rm -f "${ROOT}"/usr/bin/${TARGET}-${x}
		rm -f "${ROOT}"/usr/${TARGET}/bin/${x}
	done
	for x in ansidecl.h bfd.h bfdlink.h dis-asm.h symcat.h ; do
		rm -f "${ROOT}"/usr/${TARGET}/include/${x}
	done
	rm -f "${ROOT}"/usr/${TARGET}/lib/ldscripts
}

get_current_profile() {
	if [[ ! -f ${ENV_D}/config-${PROFILE} ]] ; then
		eerror "$0: No binutils profile is active!"
		return 1
	fi

	source "${ENV_D}/config-${PROFILE}"

	if [[ -z ${CURRENT} ]] ; then
		eerror "$0: No binutils profile is active!"
		return 1
	fi

	echo "${PROFILE}-${CURRENT}"

	return 0
}

list_profiles() {
	local i=1

	if [[ ${ROOT} != / ]] ; then
		echo "Using binutils-config info in ${ROOT}"
	fi
	target=
	for x in "${ENV_D}"/* ; do
		if [[ -f ${x} ]] && [[ ${x/\/config-} = "${x}" ]] ; then
			source "${x}"
			if [[ ${target} != ${TARGET} ]] ; then
				[[ -n ${target} ]] && echo
				target="${TARGET}"
			fi

			x="${x##*/}"
			if [[ -e ${ENV_D}/config-${TARGET} ]] ; then
				source "${ENV_D}/config-${TARGET}"
				[[ ${VER} = "${CURRENT}" ]] && x="${x} *"
			fi
			echo " [${i}] ${x}"
			i=$((i + 1))
		fi
	done
}

[[ -z ${ROOT} ]] && ROOT="/"
ENV_D="${ROOT}etc/env.d/binutils"

NEED_ACTION="yes"
DOIT="switch_profile"
PROFILE=""

while [[ $# -gt 0 ]] ; do
	x=$1
	shift
	case "${x}" in
		-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
			;;
		-u|--uninstall)
			if [[ ${NEED_ACTION} = "yes" ]] ; then
				NEED_ACTION="no"
				DOIT="uninstall_target"
				TARGET="$1"
				shift
			fi
			;;
		-h|--help)
			usage
			exit 0
			;;
		-v|--version)
			echo "binutils-config-1.0"
			exit 0
			;;
		-*)
			eerror "$0: Invalid switch!  Run $0 without parameters for help."
			exit 1
			;;
		*)
			if [[ -n ${PROFILE} ]] ; then
				eerror "$0: Too many arguments!  Run $0 without parameters for help."
				exit 1
			fi

			if [[ -z $(echo ${x} | tr -d '[:digit:]') ]] ; then
				# User gave us a # representing the profile
				i=1
				for y in "${ENV_D}"/* ; do
					[[ ${y/config-} != ${y} ]] && continue

					if [[ -f ${y} ]] && [[ ${x} -eq ${i} ]] ; then
						PROFILE="${y##*/}"
						break
					fi
					i=$((i + 1))
				done
			else
				# User gave us a full HOST-ver
				x="${x##*/}"
				if [[ ! -f ${ENV_D}/${x} ]] && [[ ! -f ${ENV_D}/config-${x} ]] ; then
					eerror "$0: Could not locate '$x' in '${ENV_D}/'!"
					exit 1
				fi
				PROFILE="${x}"
			fi
			;;
	esac
done

if [[ ${DOIT} != "list_profiles" ]] ; then
	if [[ -z ${CHOST} ]] ; then
		HOST="$(portageq envvar CHOST)"
	else
		HOST="${CHOST}"
	fi
fi
[ -z "${PROFILE}" ] && PROFILE="${HOST}"
eval ${DOIT}

# vim:ts=4