path: root/configure

#!/bin/sh

# Configuration script
#   Copyright (C) 1988, 1990, 1991 Free Software Foundation, Inc.

#This file is part of GNU.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

# $Id$

# Please email any bugs, comments, and/or additions to this file to:
# configure@cygnus.com

#
# Shell script to create proper links to machine-dependent files in
# preparation for compilation.
#
# If configure succeeds, it leaves its status in config.status.
# If configure fails after disturbing the status quo, 
# 	config.status is removed.
#

# NOTE: This script contains support for a Cygnus experimental feature, called
# +subdirs, which is currently, tentatively, de-supported.

export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0 $argv; kill $$)

remove=rm
hard_link=ln
symbolic_link='ln -s'

#for Test
#remove="echo rm"
#hard_link="echo ln"
#symbolic_link="echo ln -s"

# clear some things potentially inherited from environment.

Makefile=Makefile
Makefile_in=Makefile.in
ansi=
arguments=$*
commontargets=
configdirs=
datadir=
datadiroption=
defaulttargets=
fatal=
floating_point=default
gas=default
hosts=
#hostsubdir=
#namesubdir=
next_prefix=
next_host=
#next_namesubdir=
#next_objdir=
next_site=
next_srcdir=
next_target=
next_tmpdir=
norecursion=
#objdir=
#objdiroption=
prefix=/usr/local
progname=
recurring=
removing=
srcdir=
srctrigger=
target=
targets=
#targetsubdir=
undefinedargs=
verbose=
x11=default

# or maybe grab from gcc/version.c
version_path=
next_version_path=

NO_EDIT="This file was generated automatically by configure.  Do not edit."

## this is a little touchy and won't always work, but...
##
## if the argv[0] starts with a slash then it is an absolute name that can be
## used as is.
##
## otherwise, if argv[0] has no slash in it, we can assume that it is on the
## path.  Since PATH might include "." we also add `pwd` to the end of PATH.
##
## otherwise we prepend `pwd` to $0 and hope that will give us an absolute
## path.
##

PWD=`pwd`

if (echo $0 | grep '^/' > /dev/null) ; then
	progname=$0
elif (echo $0 | grep '/' > /dev/null) ; then
	progname=${PWD}/$0
else
	progname=$0
	PATH=$PATH:${PWD} ; export PATH
fi

configsub=`echo ${progname} | sed 's/configure$/config.sub/'`

if ${configsub} none >/dev/null 2>&1 ; then
	true
else
	echo '***' cannot find config.sub.
	echo 1
fi

for arg in $*;
do
	# handle things that might have args following as separate words
	if [ -n "${next_prefix}" ] ; then prefix=${arg} ; prefixoption="-prefix=${prefix}" ; next_prefix=
	elif [ -n "${next_datadir}" ] ; then datadir=${arg} ; datadiroption="-datadir=${datadir}" ; next_datadir=
#	elif [ -n "${next_namesubdir}" ] ; then \
#		namesubdir=${arg} ; namesubdiroption="--namesubdir=${namesubdir}" ; next_namesubdir=
#	elif [ -n "${next_objdir}" ] ; then objdir=${arg} ; objdiroption="--objdir=${objdir}" ; next_objdir=
	elif [ -n "${next_version_path}" ] ; then version_path=${arg} ; next_version_path=
	elif [ -n "${next_site}" ] ; then site=${arg} ; next_site=
	elif [ -n "${next_srcdir}" ] ; then srcdir=${arg} ; next_srcdir=		
	elif [ -n "${next_target}" ] ; then
		next_target=
		if [ -z "${targets}" ] ; then
			newtargets="${targets} ${arg}"
			targets="${newtargets}"
		else
			echo '***' Can only configure for one target at a time.
			fatal=yes
		fi
	elif [ -n "${next_tmpdir}" ] ; then
		next_tmpdir=
		tmpdiroption="--tmpdir=${arg}"
		TMPDIR=${arg}

	else
		case ${arg} in
		-ansi | --a*)
			ansi=true
			clib=clib
			;;
		-datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* | --da=* | --d=*)
			datadir=`echo ${arg} | sed 's/-\{1,2\}d[a-z]*=//'`
			datadiroption=${arg}
			;;
		-datadir | --datadir | --datadi | --datad | --data | --dat | --da | --d)
			next_datadir=yes
			;;
		-gas | --g*)
			gas=yes
			;;
		-help | --he*)
			fatal=true
			;;
		-host=* | --host=* | --hos=* | --ho=*)
#			if [ -n "${hosts}" ] ; then
#				subdirs="--subdirs"
#			fi

			if [ -z "${hosts}" ] ; then
				newhosts="${hosts} `echo ${arg} | sed 's/-\{1,2\}h[a-z]*=//'`"
				hosts="${newhosts}"
			else
				echo '***' Can only configure for one host at a time.
				fatal=yes
			fi
			;;
		-languages=* | --languages=* | --language=* | --languag=* \
			| --langua=* | --langu=* | --lang=* | --lan=* | --la=* \
			| --l=*)
			languages="${languages} `echo ${arg} | sed 's/-\{1,2\}l[a-z]*=//'`"
			;;
#		-namesubdir | --namesubdir | --namesubdi | --namesubd | --namesub | --namesu | --names | --name | --nam | --na)
#			next_namesubdir=yes
#			;;
#		-namesubdir=* | --namesubdir=* | --namesubdi=* | --namesubd=* | --namesub=* | --namesu=* | --names=* | --name=* | --nam=* | --na=*)
#			namesubdir=`echo ${arg} | sed 's/-\{1,2\}na[a-z]*=//'`
#			namesubdiroption=${arg}
#			;;
		-nfp | --nf*)
			floating_point=no
			;;
		-norecursion | --no*)
			norecursion=true
			;;
#		-objdir=* | --objdir=* | --objdi=* | --objd=* | --obj=* | --ob=* | --o=*)
#			objdiroption=${arg}
#			objdir=`echo ${arg} | sed 's/-\{1,2\}o[a-z]*=//'`
#			;;
#		-objdir | --objdir | --objdi | --objd | --obj | --ob | --o)
#			next_objdir=yes
#			;;
		-prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
			prefix=`echo ${arg} | sed 's/-\{1,2\}p[a-z]*=//'`
			prefixoption=${arg}
			;;
		-prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
			next_prefix=yes
			;;
		-recurring | --recurring | --recurrin | --recurri | --recurr | --recur | --recu | --rec | --re)
			recurring=true
			arguments=`echo ${arguments} | sed "s:${arg}::"`
			;;
		-rm | --rm)
			removing=${arg}
			;;
		-site=* | --site=* | --sit=* | --si=*)
			site=`echo ${arg} | sed 's/-\{1,2\}s[a-z]*=//'`
			;;
		-site | --site | --sit | --si)
			next_site=yes
			;;
		-srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
			srcdir=`echo ${arg} | sed 's/-\{1,2\}s[a-z]*=//'`
			;;
		-srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
			next_srcdir=yes
			;;
#		-subdirs | --su*)
#			subdirs=${arg}
#			;;
		-target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=*)
#			if [ -n "${targets}" ] ; then
#				subdirs="--subdirs"
#			fi

			if [ -z "${targets}" ] ; then
				newtargets="${targets} `echo ${arg} | sed 's/-\{1,2\}t[a-z]*=//'`"
				targets="${newtargets}"
			else
				echo '***' Can only configure for one target at a time.
				fatal=yes
			fi
			;;
		-target | --target | --targe | --targ | --tar | --ta)
			next_target=yes
			;;
		-tmpdir=* | --tmpdir=* | --tmpdi=* | --tmpd=* | --tmp=* | --tm=*)
			tmpdiroption=${arg}
			TMPDIR=`echo ${arg} | sed 's/-\{1,2\}t[a-z]*=//'`
			;;
		-tmpdir | --tmpdir | --tmpdi | --tmpd | --tmp | --tm)
			next_tmpdir=yes
			;;
		-v | -verbose | --v)
			verbose=${arg}
			;;
		-x | --x) ;;
		-* | --*)
			(echo ;
			echo "Unrecognized option: \"${arg}\"". ;
			echo) 1>&2
			fatal=true
			;;
		*)
#			if [ -n "${hosts}" ] ; then
#				subdirs="--subdirs"
#			fi

			if [ -z "${undefs}" ] ; then
				newundefs="${undefs} ${arg}"
				undefs=${newundefs}
			else
				echo '***' Can only configure for one host and one target at a time.
				fatal=yes
			fi
			;;
		esac
	fi
done

if [ -n "${verbose}" ] ; then
	echo $0 $*
fi

# process host and target
if [ -z "${fatal}" ] ; then
#	# Complain if an arg is missing
#	if [ -z "${hosts}" ] ; then
#		(echo ;
#		echo "configure: No HOST specified." ;
#		echo) 1>&2
#		fatal=true
#	fi

### This is a bit twisted.
### * if all three are specified, this is an error.
### * if we have neither hosts, nor unadorned args, this is an error.
### * if no hosts are specified, then the unadorned args are hosts, but if
### there were none, this is an error.
### * if no targets are specified, then the unadorned args are targets, but if
### there were no unadorned args, then the hosts are also targets.

	if [ -n "${hosts}" -a -n "${targets}" -a -n "${undefs}" ] ; then
		echo '***' Can only configure for one host and one target at a time.
		fatal=yes
	elif [ -z "${hosts}" -a -z "${undefs}" ] ; then
		echo '***' You must tell me for which host you want to configure.
		fatal=yes
	else
		if [ -z "${hosts}" ] ; then
			hosts=${undefs}
		fi

		if [ -z "${targets}" ] ; then
			if [ -n "${undefs}" ] ; then
				targets=${undefs}
			else
				targets=${hosts}
			fi
		fi
	fi
fi

if [ -n "${fatal}" -o "${hosts}" = "help" ] ; then
	(echo "Usage: configure HOST" ;
	echo ;
	echo "Options: [defaults in brackets]" ;
	echo " -ansi		configure w/ANSI library. [no ansi lib]" ;
	echo " -datadir=MYDIR	configure for installation of host dependent files into MYDIR. [\"/usr/local\"]" ;
	echo " -gas		configure the compilers for use with gas. [native as]" ;
	echo " -help		print this message. [normal config]" ;
	echo " -lang=LANG	configure to build LANG. [gcc]" ;
	echo " -nfp		configure the compilers default to soft floating point. [hard float]" ;
	echo " -norecursion	configure this directory only. [recurse]" ;
#	echo " -objdir=ODIR	configure in a parallel tree rooted in ODIR. [rooted in \".\"]" ;
	echo " -prefix=MYDIR	configure for installation of host dependent files into MYDIR. [\"/usr/local\"]" ;
	echo " -rm		remove this configuration. [build a configuration]" ;
	echo " -site		configure with site specific makefile" ;
	echo " -srcdir=DIR	find the sources in DIR. [\".\" or \"..\"]" ;
# This is correctly aligned in the output, even though it isn't here.
#	echo " -subdirs	configure in subdirectories.  [in source directories]" ;
	echo " -target=TARGET	configure for TARGET.  [TARGET = HOST]" ;
	echo " -tmpdir=TMPDIR	create temporary files in TMPDIR.  [ TMPDIR = \"/tmp\" ]" ;
	echo ;
	echo "Where HOST and TARGET are something like \"vax\", \"sun3\", \"encore\", etc." ;
#	echo "Asking for more than one \"--target\" implies \"--subdirs\".  Any other" ;
#	echo "options given will apply to all targets."
	) 1>&2

	if [ -r config.status ] ; then
		cat config.status
	fi

	exit 1
fi

if [ -z "${srcdir}" ] ; then
	if [ -r configure.in ] ; then
		srcdir=.
	elif [ -r ../configure.in ] ; then
		srcdir=..
	else
		echo '***' "Can't find configure.in.  Try using -srcdir=some_dir"
		exit 1
	fi
fi


### break up ${srcdir}/configure.in.
if [ -z "`grep '^# per\-host:' ${srcdir}/configure.in`" ] ; then
	echo '***' ${srcdir}/configure.in has no "per-host:" line. 1>&2
	exit 1
fi

if [ -z "`grep '^# per\-target:' ${srcdir}/configure.in`" ] ; then
	echo '***' ${srcdir}/configure.in has no "per-target:" line. 1>&2
	exit 1
fi

if [ -z "${TMPDIR}" ] ; then
	TMPDIR=/tmp ; export TMPDIR
fi

# keep this filename short for &%*%$*# 14 char file names
tmpfile=${TMPDIR}/cONf$$
trap "rm -f ${tmpfile}.com ${tmpfile}.tgt ${tmpfile}.hst ${tmpfile}.pos" 0

# split ${srcdir}/configure.in into common, per-host, per-target,
# and post-target parts.  Post-target is optional.
sed -e '/^# per\-host:/,$d' ${srcdir}/configure.in > ${tmpfile}.com
sed -e '1,/^# per\-host:/d' -e '/^# per\-target:/,$d' ${srcdir}/configure.in > ${tmpfile}.hst
if grep '^# post-target:' ${srcdir}/configure.in >/dev/null ; then
  sed -e '1,/^# per\-target:/d' -e '/^# post\-target:/,$d' ${srcdir}/configure.in > ${tmpfile}.tgt
  sed -e '1,/^# post\-target:/d' ${srcdir}/configure.in > ${tmpfile}.pos
else
  sed -e '1,/^# per\-target:/d' ${srcdir}/configure.in > ${tmpfile}.tgt
  echo >${tmpfile}.pos
fi

### do common part of configure.in

. ${tmpfile}.com

# some sanity checks on configure.in
if [ -z "${srctrigger}" ] ; then
	echo '***' srctrigger not set in ${PWD}/configure.in.
	exit 1
fi

for host in ${hosts} ; do
	# Default other arg
	if [ -z "${targets}" -o -n "${defaulttargets}" ] ; then
		targets=${host}
		defaulttargets=true
	fi

	host_alias=${host}

	result=`${configsub} ${host}`
	host_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
	host_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
	host_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
	host=${host_cpu}-${host_vendor}-${host_os}
	host_makefile_frag=config/mh-${host}
	if [ ! -f ${host_makefile_frag} ]
	then
		host_makefile_frag=config/mh-${host_alias}
	fi

	. ${tmpfile}.hst

	for target in ${targets} ; do

		target_alias=${target}
		result=`${configsub} ${target}`
		target_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
		target_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
		target_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
		target=${target_cpu}-${target_vendor}-${target_os}
		target_makefile_frag=config/mt-${target}
		if [ ! -f ${target_makefile_frag} ]
		then
			target_makefile_frag=config/mt-${target_alias}
		fi

		. ${tmpfile}.tgt

		if [ "${host_alias}" = "${target_alias}" ] ; then
			subdirname=H-${host_alias}
		else
			subdirname=X-${host_alias}-${target_alias}
		fi

		if [ -n "${namesubdir}" ] ; then
			subdirname=${namesubdir}
		fi

		if [ -n "${removing}" ] ; then
#			if [ -n "${objdir}" ] ; then
#				echo '***' --rm not supported for --objdir.  Just \"rm -rf ${objdir}\" by hand.
#				exit 1
#			fi

#			if [ -n "${subdirs}" ] ; then
#				if [ -d "${subdirname}" ] ; then
#					rm -rf ${hostsubdir}
#				else
#					echo Warning: no ${PWD}/${hostsubdir} to remove.
#				fi
#			else
				rm -f ${Makefile} config.status ${links}
#			fi
		else
#			if [ -n "${objdir}" ]; then
#				srcdir=${PWD}
#				cd ${objdir}
#			fi

#			if [ -n "${subdirs}" ] ; then
#				# check for existing status before allowing forced subdirs.
#				if [ -f ${Makefile} ] ; then
#					echo '***' "${Makefile} already exists in source directory.  ${PWD} not configured." 1>&2
#					exit 1
#				fi
#
#				# use a subdir common to all targets for this host iff: this is a cross AND
#				# this tool does not claim to be target dependent AND we have not been asked to name the subdir.
#				if [ ${host_alias} != ${target_alias} -a -z "${target_dependent}" -a -z "${namesubdiroption}" ]
#				then
#					if [ ! -d H-${host_alias} ] ; then mkdir H-${host_alias} ; fi
#
#					if (${symbolic_link} ${subdirname} H-${host_alias} 2> /dev/null) ; then
#						true
#					else # just give up. they lose.
#						rmdir H-${host_alias}
#						if [ ! -d ${subdirname} ] ; then mkdir ${subdirname} ; fi
#					fi
#				elif [ ! -d ${subdirname} ] ; then
#					mkdir ${subdirname}
#				fi
#
#				cd ${subdirname}
#
#				if [ -z "${srcdir}" ] ; then
#					srcdir=..
#				fi
#			elif [ "`echo H-*`" != "H-*" -a "`echo X-*`" != "X-*" ] ; then
#				# if not subdir builds, then make sure none exist.
#				# We might miss if there are explicitly named subdirs.
#				echo '***' "Configured subdirs exist.  ${PWD} not configured." 1>&2
#				exit 1
#			else
#				true
#			fi

			# Find the source files, if location was not specified.
			if [ -z "${srcdir}" ] ; then
				srcdirdefaulted=1
				srcdir=.
				if [ ! -r ${srctrigger} ] ; then
					srcdir=..
				fi
			fi

			if [ ! -r ${srcdir}/${srctrigger} ] ; then
				if [ -z "${srcdirdefaulted}" ] ; then
					echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/${srcdir}" 1>&2
				else
					echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/. or ${PWD}/.." 1>&2
				fi

				echo '***' \(At least ${srctrigger} is missing.\) 1>&2
				exit 1
			fi

			# Set up the list of links to be made.
			# ${links} is the list of link names, and ${files} is the list of names to link to.

			# Make the links.
			while [ -n "${files}" ] ; do
				# set file to car of files, files to cdr of files
				set ${files}; file=$1; shift; files=$*
				set ${links}; link=$1; shift; links=$*

				if [ ! -r ${srcdir}/${file} ] ; then
					echo '***' "${progname}: cannot create a link \"${link}\"," 1>&2
					echo '***' "since the file \"${file}\" does not exist." 1>&2
					exit 1
				fi

				${remove} -f ${link}
				rm -f config.status
				# Make a symlink if possible, otherwise try a hard link
				${symbolic_link} ${srcdir}/${file} ${link} 2>/dev/null || ${hard_link} ${srcdir}/${file} ${link}

				if [ ! -r ${link} ] ; then
					echo '***' "${progname}: unable to link \"${link}\" to \"${srcdir}/${file}\"." 1>&2
					exit 1
				fi

				if [ -n "${verbose}" ] ; then
					echo "Linked \"${link}\" to \"${srcdir}/${file}\"."
				fi
			done

			# Create a .gdbinit file which runs the one in srcdir
			# and tells GDB to look there for source files.

			if [ -r ${srcdir}/.gdbinit ] ; then
				case ${srcdir} in
				.)
					;;
				*)
					echo "# "${NO_EDIT} > .gdbinit
					echo "dir ." >> .gdbinit
					echo "dir ${srcdir}" >> .gdbinit
					echo "source ${srcdir}/.gdbinit" >> .gdbinit
					;;
				esac
			fi

			# Install a makefile, and make it set VPATH
			# if necessary so that the sources are found.
			# Also change its value of srcdir.

		# FIXME-someday: This business of always writing to .tem and mv back
		# is so that I don't screw things up while developing.  Once this
		# template is stable, these should be optimized. xoxorich.

			# Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
			if [ "${host}" != "${target}" ] ; then
				echo "CROSS=-DCROSS_COMPILE" > ${Makefile}
				echo "ALL=start.encap" >> ${Makefile}
			else
				echo "ALL=all.internal" > ${Makefile}
			fi

			# set target, host, VPATH
			echo "host_alias = ${host_alias}" >> ${Makefile}
			echo "host_cpu = ${host_cpu}" >> ${Makefile}
			echo "host_vendor = ${host_vendor}" >> ${Makefile}
			echo "host_os = ${host_os}" >> ${Makefile}
			echo "version_path = ${version_path}" >> ${Makefile}
			echo "target_alias = ${target_alias}" >> ${Makefile}
			echo "target_cpu = ${target_cpu}" >> ${Makefile}
			echo "target_vendor = ${target_vendor}" >> ${Makefile}
			echo "target_os = ${target_os}" >> ${Makefile}

#			if [ -n "${subdirs}" ] ; then
#				(echo "subdir = /${subdirname}" ;
#					echo "unsubdir = ..") >> ${Makefile}
#			else
				(echo "subdir =" ;
					echo "unsubdir = .") >> ${Makefile}
#			fi

		#	echo "workdir = ${PWD}" >> ${Makefile}
			echo "VPATH = ${srcdir}" >> ${Makefile}

			# add "Makefile.in" (or whatever it's called)
			cat ${srcdir}/${Makefile_in} >> ${Makefile}

			# Conditionalize the makefile for this site.
			if [ -n "${site}" ] ; then
				site_makefile_frag=config/ms-${site}

				if [ -f ${srcdir}/${site_makefile_frag} ] ; then
					(echo "site_makefile_frag = ${srcdir}/${site_makefile_frag}" ; 
						sed -e "/^####/  r ${srcdir}/${site_makefile_frag}" ${Makefile}) > Makefile.tem
				else
					(echo "site_makefile_frag =" ; 
						cat ${Makefile}) > Makefile.tem
				fi
				mv Makefile.tem ${Makefile}
			fi

			# Conditionalize the makefile for this host.
			if [ -f ${srcdir}/${host_makefile_frag} ] ; then
				(echo "host_makefile_frag = ${srcdir}/${host_makefile_frag}" ;
					sed -e "/^####/  r ${srcdir}/${host_makefile_frag}" ${Makefile}) > Makefile.tem
			else
				(echo "host_makefile_frag =" ;
					cat ${Makefile}) > Makefile.tem
			fi
			mv Makefile.tem ${Makefile}

			# Conditionalize the makefile for this target.
			if [ -f ${srcdir}/${target_makefile_frag} ] ; then
				(echo "target_makefile_frag = ${srcdir}/${target_makefile_frag}" ; 
					sed -e "/^####/  r ${srcdir}/${target_makefile_frag}" ${Makefile}) > Makefile.tem
			else
				(echo "target_makefile_frag =" ; 
					cat ${Makefile}) > Makefile.tem
			fi
			mv Makefile.tem ${Makefile}

			# set srcdir
			sed "s@^srcdir = \.@srcdir = ${srcdir}@" ${Makefile} > Makefile.tem
			mv Makefile.tem ${Makefile}

			# set prefix
			if [ -n "${prefix}" ] ; then
				sed "s:^prefix =.*$:prefix = ${prefix}:" ${Makefile} > Makefile.tem
				mv Makefile.tem ${Makefile}
			fi

			# set datadir
			if [ -n "${datadir}" ] ; then
				sed "s:^datadir =.*$:datadir = ${datadir}:" ${Makefile} > Makefile.tem
				mv Makefile.tem ${Makefile}
			fi

			# reset SUBDIRS
			sed "s:^SUBDIRS =.*$:SUBDIRS = ${configdirs}:" ${Makefile} > Makefile.tem
			mv Makefile.tem ${Makefile}

			# reset NONSUBDIRS
			sed "s:^NONSUBDIRS =.*$:NONSUBDIRS = ${noconfigdirs}:" ${Makefile} > Makefile.tem
			mv Makefile.tem ${Makefile}

			# remove any form feeds.
			sed -e "s///" ${Makefile} > Makefile.tem
			mv Makefile.tem ${Makefile}

			# prepend warning about editting.
			echo "# "${NO_EDIT} > ${Makefile}.tem
			cat ${Makefile} >> ${Makefile}.tem
			mv Makefile.tem ${Makefile}

			using=
			if [ -f ${srcdir}/${host_makefile_frag} ] ; then
				using="${using} and \"${host_makefile_frag}\""
			fi
			if [ -f ${srcdir}/${target_makefile_frag} ] ; then
				using="${using} and \"${target_makefile_frag}\""
			fi
			if [ -n "${site}" -a \
			     -f ${srcdir}/${site_makefile_frag} ] ; then
				using="${using} and \"${site_makefile_frag}\""
			fi
			using=`echo "${using}" | sed 's/and/using/'`
			using="Created \"${Makefile}\" in ${PWD}${using}."

			if [ -n "${verbose}" -o -z "${recurring}" ] ; then
				echo ${using}
			fi

			. ${tmpfile}.pos

			# describe the chosen configuration in config.status.
			# Make that file a shellscript which will reestablish
			# the same configuration.  Used in Makefiles to rebuild
			# Makefiles.

			if [ -z "${norecursion}" ] ; then
				arguments="${arguments} -norecursion"
			fi

			echo "#!/bin/sh
# ${NO_EDIT}
# ${PWD} was configured as follows:
${progname}" ${arguments}  "
# ${using}" > config.status
			chmod a+x config.status

#			originaldir=${PWD}
#			cd ${srcdir}
		fi

		# If there are subdirectories, then recur. 
		if [ -z "${norecursion}" -a -n "${configdirs}" ] ; then 
			for configdir in ${configdirs} ; do
				if [ -n "${verbose}" ] ; then
					echo Configuring ${configdir}...
				fi

				if [ -d ${srcdir}/${configdir} ] ; then
					if [ "${srcdir}" != "." ] ; then
						if [ ! -d ./${configdir} ] ; then
							mkdir ./${configdir}
						fi
					fi

					POPDIR=${PWD}
					cd ${configdir} 

### figure out what to do with srcdir
					case "${srcdir}" in
					".") ;; # do nothing.  We're building in place.
					"..") srcdiroption="-srcdir=../../${configdir}" ;;
					*) srcdiroption="-srcdir=${srcdir}/${configdir}" ;;
					esac

### The recursion line is here.
					if (${progname} -recurring ${host_alias} -target=${target_alias} \
						${verbose} ${subdirs} ${removing} ${prefixoption} \
						${tmpdiroption} ${namesubdiroption} ${datadiroption} \
						${srcdiroption}) ; then
						true
					else
						exit 1
					fi

					cd ${POPDIR}
				elif [ -n "${verbose}" ] ; then
					echo Warning: source directory \"${srcdir}/${configdir}\" is missing.
				fi
			done
		fi
	done # for each target

	# Now build a Makefile for this host.
#	if [ -n "${subdirs}" -a ! -n "${removing}" ] ; then
#		push=${PWD}
#
#		if [ -n "${objdir}" ] ; then
#			cd ${objdir}
#		fi
#
#		cd ${hostsubdir}
#		cat > GNUmakefile << 'E!O!F'
## Makefile generated by configure for host ${host_alias}.
#
#ALL := $(shell ls -d T-*)
#
#%:
#	$(foreach subdir,$(ALL),$(MAKE) -C $(subdir) \$@ &&) true
#
#all:
#E!O!F
#		cd ${push}
#	fi
done # for each host

### clean up.

# trap cmd above handles this now:
#rm -f ${tmpfile}.com ${tmpfile}.tgt ${tmpfile}.hst ${tmpfile}.pos

exit 0

#
# Local Variables:
# fill-column: 131
# End:
#

# end of configure