darling-gdb/configure

#!/bin/sh

# Configuration script
#   Copyright (C) 1988, 1990, 1991, 1992 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.  */

# 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
arguments=$*
commontargets=
configdirs=
datadir=
datadiroption=
defaulttargets=
fatal=
floating_point=default
gas=default
host_makefile_frag=
hosts=
next_host=
next_prefix=
next_site=
next_srcdir=
next_target=
next_tmpdir=
norecursion=
prefix=/usr/local
progname=
recurring=
removing=
site_makefile_frag=
srcdir=
srctrigger=
target=
target_makefile_frag=
targets=
undefinedargs=
verbose=
version="$Revision$"
x11=default

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

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_site}" ] ; then site=${arg} ; next_site=
	elif [ -n "${next_srcdir}" ] ; then srcdir=${arg} ; next_srcdir=		
	elif [ -n "${next_target}" ] ; then
		next_target=
		case "${targets}" in
		"")
			newtargets="${targets} ${arg}"
			targets="${newtargets}"
			;;
		*)
			echo '***' Can only configure for one target at a time.
			fatal=yes
			;;
		esac
	elif [ -n "${next_tmpdir}" ] ; then
		next_tmpdir=
		tmpdiroption="--tmpdir=${arg}"
		TMPDIR=${arg}

	else
		case ${arg} in
		-datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* | --da=* | --d=*)
			datadir=`echo ${arg} | sed 's/^[-a-z]*=//'`
			datadiroption=${arg}
			;;
		-datadir | --datadir | --datadi | --datad | --data | --dat | --da | --d)
			next_datadir=yes
			;;
		-gas | --g*)
			gas=yes
			;;
		-help | --he*)
			fatal=true
			;;
		-host=* | --host=* | --hos=* | --ho=*)
			case "${hosts}" in
			"")
				newhosts="${hosts} `echo ${arg} | sed 's/^[-a-z]*=//'`"
				hosts="${newhosts}"
				;;
			*)
				echo '***' Can only configure for one host at a time.
				fatal=yes
				;;
			esac
			;;
		-nfp | --nf*)
			floating_point=no
			;;
		-norecursion | --no*)
			norecursion=true
			;;
		-prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
			prefix=`echo ${arg} | sed 's/^[-a-z]*=//'`
			prefixoption=${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/^[-a-z]*=//'`
			;;
		-site | --site | --sit | --si)
			next_site=yes
			;;
		-srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
			srcdir=`echo ${arg} | sed 's/^[-a-z]*=//'`
			;;
		-srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
			next_srcdir=yes
			;;
		-target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=*)
			case "${targets}" in
			"")
				newtargets="${targets} `echo ${arg} | sed 's/^[-a-z]*=//'`"
				targets="${newtargets}"
				;;
			*)
				echo '***' Can only configure for one target at a time.
				fatal=yes
				;;
			esac
			;;
		-target | --target | --targe | --targ | --tar | --ta)
			next_target=yes
			;;
		-tmpdir=* | --tmpdir=* | --tmpdi=* | --tmpd=* | --tmp=* | --tm=*)
			tmpdiroption=${arg}
			TMPDIR=`echo ${arg} | sed 's/^[-a-z]*=//'`
			;;
		-tmpdir | --tmpdir | --tmpdi | --tmpd | --tmp | --tm)
			next_tmpdir=yes
			;;
		-v | -verbose | --v)
			verbose=${arg}
			;;
		-version | -V | --version | --V)
			echo "This is Cygnus Configure version" `echo ${version} | sed 's/[ $:]//g'`
			exit 0
			;;
		-x | --x) ;;
		-* | --*)
			(echo ;
			echo "Unrecognized option: \"${arg}\"". ;
			echo) 1>&2
			fatal=true
			;;
		*)
			case "${undefs}" in
			"")
				newundefs="${undefs} ${arg}"
				undefs=${newundefs}
				;;
			*)
				echo '***' Can only configure for one host and one target at a time.
				fatal=yes
				;;
			esac
			;;
		esac
	fi
done

# process host and target
case "${fatal}" in
"")
#	# Complain if an arg is missing
#	if [ -z "${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 "${undefs}" ] ; then
		echo '***' You must tell me for which host you want to configure.
		fatal=yes
	else
		case "${hosts}" in
		"") hosts=${undefs} ;;
		*) ;;
		esac

		case "${targets}" in
		"")
			case "${undefs}" in
			"")	targets=${hosts} ;;
			*)	targets=${undefs} ;;
			esac
			;;
		*) ;;
		esac
	fi
	;;
*) ;;
esac

if [ -n "${fatal}" -o "${hosts}" = "help" ] ; then
	(echo "Usage: configure HOST" ;
	echo ;
	echo "Options: [defaults in brackets]" ;
	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 " -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 \"..\"]" ;
	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." ;
	) 1>&2

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

	exit 1
fi

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

if ${configsub} `echo ${hosts} | sed -e 's/ .*//'` >/dev/null 2>&1 ; then
	true
else
	echo '***' cannot find config.sub.
	exit 1
fi

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


# default datadir
case "${datadir}" in
"") datadir="$(prefix)/lib" ;;
*) ;;
esac

### break up ${srcdir}/configure.in.
case "`grep '^# per\-host:' ${srcdir}/configure.in`" in
"")
	echo '***' ${srcdir}/configure.in has no "per-host:" line. 1>&2
	exit 1
	;;
*) ;;
esac

case "`grep '^# per\-target:' ${srcdir}/configure.in`" in
"")
	echo '***' ${srcdir}/configure.in has no "per-target:" line. 1>&2
	exit 1
	;;
*) ;;
esac

case "${TMPDIR}" in
"") TMPDIR=/tmp ; export TMPDIR ;;
*) ;;
esac

# 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
case "${srctrigger}" in
"")
	echo '***' srctrigger not set in ${PWD}/configure.in.
	exit 1
	;;
*) ;;
esac

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}

	. ${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}

		. ${tmpfile}.tgt

		case "${host_alias}" in
		"${target_alias}")	subdirname=H-${host_alias} ;;
		*)			subdirname=X-${host_alias}-${target_alias} ;;
		esac

		case "${namesubdir}" in
		"") ;;
		*) subdirname=${namesubdir} ;;
		esac

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

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

				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

				case "${verbose}" in
				"") ;;
				*)  echo "Linked \"${link}\" to \"${srcdir}/${file}\"." ;;
				esac
			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
				.)
					;;
				*) cat > .gdbinit <<EOF
# ${NO_EDIT} > .gdbinit
dir .
dir ${srcdir}
source ${srcdir}/.gdbinit
EOF
					;;
				esac
			fi

			# Install a makefile, and make it set VPATH
			# if necessary so that the sources are found.
			# Also change its value of srcdir.
			# NOTE: Makefile generation constitutes the majority of the time in configure.  Hence, this section has
			# been somewhat optimized and is perhaps a bit twisty.

			# code is order so as to try to sed the smallest input files we know.

			# the three makefile fragments MUST end up in the resulting Makefile in this order: target, host, and site.
			# so do these separately because I don't trust the order of sed -e expressions.

			# Conditionalize for this site from "Makefile.in" (or whatever it's called) into Makefile.tem
			case "${site}" in
			"") cp ${srcdir}/${Makefile_in} Makefile.tem ;;
			*)
				site_makefile_frag=${srcdir}/config/ms-${site}

				if [ -f ${site_makefile_frag} ] ; then
					sed -e "/^####/  r ${site_makefile_frag}" ${srcdir}/${Makefile_in} \
						>> Makefile.tem
				else
					cp ${srcdir}/${Makefile_in} Makefile.tem
					site_makefile_frag=
				fi
				;;
			esac
			# working copy now in Makefile.tem

			# Conditionalize the makefile for this host.
			case "${host_makefile_frag}" in
			"") mv Makefile.tem ${Makefile} ;;
			*)
				host_makefile_frag=${srcdir}/${host_makefile_frag}
				if [ -f ${host_makefile_frag} ] ; then
					sed -e "/^####/  r ${host_makefile_frag}" Makefile.tem > ${Makefile}
				else
					echo '***' Expected host makefile fragment \"${host_makefile_frag}\" 1>&2
					echo '***' is missing in ${PWD}. 1>&2
					mv Makefile.tem ${Makefile}
				fi
			esac
			# working copy now in ${Makefile}

			# Conditionalize the makefile for this target.
			case "${target_makefile_frag}" in
			"") mv ${Makefile} Makefile.tem ;;
			*)
				target_makefile_frag=${srcdir}/${target_makefile_frag}
				if [ -f ${target_makefile_frag} ] ; then
					sed -e "/^####/  r ${target_makefile_frag}" ${Makefile} >> Makefile.tem
				else
					mv ${Makefile} Makefile.tem
					target_makefile_frag=
				fi
				;;
			esac
			# real copy now in Makefile.tem

			# prepend warning about editting, and a bunch of variables.
			# fixme-someday: remove the subdir/unsubdir lines.
			cat > ${Makefile} <<EOF
# ${NO_EDIT}
host_alias = ${host_alias}
host_cpu = ${host_cpu}
host_vendor = ${host_vendor}
host_os = ${host_os}
target_alias = ${target_alias}
target_cpu = ${target_cpu}
target_vendor = ${target_vendor}
target_os = ${target_os}
target_makefile_frag = ${target_makefile_frag}
host_makefile_frag = ${host_makefile_frag}
site_makefile_frag = ${site_makefile_frag}
VPATH = ${srcdir}
subdir =
unsubdir = .
EOF

			# fixme: this shouldn't be in configure.
			# Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
			case "${host}" in
			"${target}") echo "ALL=all.internal" >> ${Makefile} ;;
			*)
				echo "CROSS=-DCROSS_COMPILE" >> ${Makefile}
				echo "ALL=all.cross" >> ${Makefile}
				;;
			esac

			# reset prefix, datadir, srcdir, SUBDIRS, NONSUBDIRS, remove any form
			# feeds.
			sed -e "s:^prefix[ 	]*=.*$:prefix = ${prefix}:" \
				-e "s:^datadir[ 	]*=.*$:datadir = ${datadir}:" \
				-e "s:^srcdir[ 	]*=.*$:srcdir = ${srcdir}:" \
				-e "s:^SUBDIRS[ 	]*=.*$:SUBDIRS = ${configdirs}:" \
				-e "s:^NONSUBDIRS[ 	]*=.*$:NONSUBDIRS = ${noconfigdirs}:" \
				-e "s///" Makefile.tem >> ${Makefile}
			# final copy now in ${Makefile}

			rm Makefile.tem

			if [ -n "${verbose}" -o -z "${recurring}" ] ; then
				case "${host_makefile_frag}" in
				"") using= ;;
				*) using="and \"${host_makefile_frag}\"" ;;
				esac

				case "${target_makefile_frag}" in
				"") ;;
				*) using="${using} and \"${target_makefile_frag}\"" ;;
				esac

				case "${site_makefile_frag}" in
				"") ;;
				*) using="${using} and \"${site_makefile_frag}\"" ;;
				esac

				echo "Created \"${Makefile}\" in" ${PWD} `echo "${using}" | sed 's/and/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.

			case "${norecursion}" in
			"") arguments="${arguments} -norecursion" ;;
			*) ;;
			esac

			echo "#!/bin/sh
# ${NO_EDIT}
# ${PWD} was configured as follows:
${progname}" ${arguments}  "
# ${using}" > config.status
			chmod a+x config.status
			;;
		*) 	rm -f ${Makefile} config.status ${links} ;;
		esac

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

				if [ -d ${srcdir}/${configdir} ] ; then
					case "${srcdir}" in
					".") ;;
					*)
						if [ ! -d ./${configdir} ] ; then
							mkdir ./${configdir}
						fi
						;;
					esac

					POPDIR=${PWD}
					cd ${configdir} 

### figure out what to do with srcdir & guest configure
					case "${srcdir}" in
					".") newsrcdir=${srcdir} ;; # no -srcdir option.  We're building in place.
					/*) # absolute path
						newsrcdir=${srcdir}/${configdir}
						srcdiroption="-srcdir=${newsrcdir}"
						;;
					*) # otherwise relative
						newsrcdir=../${srcdir}/${configdir}
						srcdiroption="-srcdir=${newsrcdir}"
						;;
					esac

### The recursion line is here.
					if [ -f ${newsrcdir}/configure ] ; then
						recprog=${newsrcdir}/configure
					else
						recprog=${progname}
					fi

					if ${recprog} -recurring ${host_alias} -target=${target_alias} \
						${verbose} ${subdirs} ${removing} ${prefixoption} \
						${tmpdiroption} ${namesubdiroption} ${datadiroption} \
						${srcdiroption} ; then
						true
					else
						exit 1
					fi

					cd ${POPDIR}
				else
					case "${verbose}" in
					"") ;;
					*) echo Warning: source directory \"${srcdir}/${configdir}\" is missing. ;;
					esac
				fi
			done
		fi
	done # for each target
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