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Revision 8789, 31.7 KB checked in by ghudson, 28 years ago (diff)
This commit was generated by cvs2svn to compensate for changes in r8788, which included commits to RCS files with non-trunk default branches.
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1	#!/bin/sh
2
3	### WARNING: this file contains embedded tabs. Do not run untabify on this file.
4
5	# Configuration script
6	# Copyright (C) 1988, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
7
8	# This program is free software; you can redistribute it and/or modify
9	# it under the terms of the GNU General Public License as published by
10	# the Free Software Foundation; either version 2 of the License, or
11	# (at your option) any later version.
12	#
13	# This program is distributed in the hope that it will be useful,
14	# but WITHOUT ANY WARRANTY; without even the implied warranty of
15	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	# GNU General Public License for more details.
17	#
18	# You should have received a copy of the GNU General Public License
19	# along with this program; if not, write to the Free Software
20	# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
22	# This file is based on one written by K. Richard Pixley.
23
24	#
25	# Shell script to create proper links to machine-dependent files in
26	# preparation for compilation.
27	#
28	# If configure succeeds, it leaves its status in config.status.
29	# If configure fails after disturbing the status quo,
30	# config.status is removed.
31	#
32
33	export PATH \|\| (echo "OOPS, this isn't sh. Desperation time. I will feed myself to sh."; sh $0 $argv; kill $$)
34
35	remove=rm
36	hard_link=ln
37	symbolic_link='ln -s'
38
39	#for Test
40	#remove="echo rm"
41	#hard_link="echo ln"
42	#symbolic_link="echo ln -s"
43
44	# clear some things potentially inherited from environment.
45
46	Makefile=Makefile
47	Makefile_in=Makefile.in
48	arguments=$*
49	build_alias=
50	configdirs=
51	exec_prefix=
52	exec_prefixoption=
53	fatal=
54	floating_point=default
55	gas=default
56	host_alias=NOHOST
57	host_makefile_frag=
58	moveifchange=
59	norecursion=
60	other_options=
61	package_makefile_frag=
62	prefix=/usr/kerberos
63	progname=
64	program_prefix=
65	program_prefixoption=
66	program_suffix=
67	program_suffixoption=
68	program_transform_name=
69	program_transform_nameoption=
70	redirect=">/dev/null"
71	removing=
72	site=
73	site_makefile_frag=
74	site_option=
75	srcdir=
76	srctrigger=
77	subdirs=
78	target_alias=NOTARGET
79	target_makefile_frag=
80	undefs=NOUNDEFS
81	version="Kerberos configure"
82	x11=default
83
84	### we might need to use some other shell than /bin/sh for running subshells
85	#
86	config_shell=${CONFIG_SHELL-/bin/sh}
87
88	NO_EDIT="This file was generated automatically by configure. Do not edit."
89
90	## this is a little touchy and won't always work, but...
91	##
92	## if the argv[0] starts with a slash then it is an absolute name that can (and
93	## must) be used as is.
94	##
95	## otherwise, if argv[0] has no slash in it, we can assume that it is on the
96	## path. Since PATH might include "." we also add `pwd` to the end of PATH.
97	##
98
99	progname=$0
100	# if PWD already has a value, it is probably wrong.
101	if [ -n "$PWD" ]; then PWD=`pwd`; fi
102
103	case "${progname}" in
104	/*) ;;
105	/) ;;
106	*)
107	PATH=$PATH:${PWD=`pwd`} ; export PATH
108	;;
109	esac
110
111	# Loop over all args
112
113	while :
114	do
115
116	# Break out if there are no more args
117	case $# in
118	0)
119	break
120	;;
121	esac
122
123	# Get the first arg, and shuffle
124	option=$1
125	shift
126
127	# Make all options have two hyphens
128	orig_option=$option # Save original for error messages
129	case $option in
130	--*) ;;
131	-*) option=-$option ;;
132	esac
133
134	# Split out the argument for options that take them
135	case $option in
136	--=)
137	optarg=`echo $option \| sed -e 's/^[^=]*=//'`
138	;;
139	# These options have mandatory values. Since we didn't find an = sign,
140	# the value must be in the next argument
141	--b* \| --cache* \| --ex* \| --ho* \| --pre* \| --program-p* \| --program-s* \| --program-t* \| --si* \| --sr* \| --ta* \| --tm* \| --x-*)
142	optarg=$1
143	shift
144	;;
145	esac
146
147	# Now, process the options
148	case $option in
149
150	--build* \| --b*)
151	case "$build_alias" in
152	"") build_alias=$optarg ;;
153	) echo '**' Can only configure for one build machine at a time. 1>&2
154	fatal=yes
155	;;
156	esac
157	;;
158	# Accepted for compatibility with new autoconf; ignored.
159	--cache*)
160	;;
161	--disable-*)
162	enableopt=`echo ${option} \| sed 's:^--disable-:enable_:;s:-:_:g'`
163	eval $enableopt=no
164	disableoptions="$disableoptions $option"
165	;;
166	--enable-*)
167	case "$option" in
168	=) ;;
169	*) optarg=yes ;;
170	esac
171
172	enableopt=`echo ${option} \| sed 's:^--::;s:=.*$::;s:-:_:g'`
173	eval $enableopt="$optarg"
174	enableoptions="$enableoptions $option"
175	;;
176	--exec-prefix* \| --ex*)
177	exec_prefix=$optarg
178	exec_prefixoption="--exec-prefix=$optarg"
179	;;
180	--gas \| --g*)
181	gas=yes
182	;;
183	--help \| --he*)
184	fatal=yes
185	;;
186	--host* \| --ho*)
187	case $host_alias in
188	NOHOST) host_alias=$optarg ;;
189	) echo '**' Can only configure for one host at a time. 1>&2
190	fatal=yes
191	;;
192	esac
193	;;
194	--nfp \| --nf*)
195	floating_point=no
196	;;
197	--norecursion \| --no*)
198	norecursion=yes
199	;;
200	--prefix* \| --pre*)
201	prefix=$optarg
202	prefixoption="--prefix=$optarg"
203	;;
204	--program-prefix* \| --program-p*)
205	program_prefix=$optarg
206	program_prefixoption="--program-prefix=$optarg"
207	;;
208	--program-suffix* \| --program-s*)
209	program_suffix=$optarg
210	program_suffixoption="--program-suffix=$optarg"
211	;;
212	--program-transform-name* \| --program-t*)
213	# Double any backslashes or dollar signs in the argument
214	program_transform_name="${program_transform_name} -e `echo ${optarg} \| sed -e 's/\\\\/\\\\\\\\/g' -e 's/\\\$/$$/g'`"
215	program_transform_nameoption="${program_transform_nameoption} --program-transform-name='$optarg'"
216	;;
217	--rm)
218	removing=--rm
219	;;
220	--silent \| --sil* \| --quiet \| --q*)
221	redirect=">/dev/null"
222	verbose=--silent
223	;;
224	--site* \| --sit*)
225	site=$optarg
226	site_option="--site=$optarg"
227	;;
228	--srcdir/ \| --sr/)
229	# Remove trailing slashes. Otherwise, when the file name gets
230	# bolted into an object file as debug info, it has two slashes
231	# in it. Ordinarily this is ok, but emacs takes double slash
232	# to mean "forget the first part".
233	srcdir=`echo $optarg \| sed -e 's:/$::'`
234	;;
235	--srcdir* \| --sr*)
236	srcdir=$optarg
237	;;
238	--target* \| --ta*)
239	case $target_alias in
240	NOTARGET) target_alias=$optarg ;;
241	) echo '**' Can only configure for one target at a time. 1>&2
242	fatal=yes
243	;;
244	esac
245	;;
246	--tmpdir* \| --tm*)
247	TMPDIR=$optarg
248	tmpdiroption="--tmpdir=$optarg"
249	;;
250	--verbose \| --v \| --verb*)
251	redirect=
252	verbose=--verbose
253	;;
254	--version \| --V \| --vers*)
255	echo "This is Cygnus Configure version" `echo ${version} \| sed 's/[ $:]//g'`
256	exit 0
257	;;
258	--with-*)
259	case "$option" in
260	=) ;;
261	*) optarg=yes ;;
262	esac
263
264	withopt=`echo ${option} \| sed 's:^--::;s:=.*$::;s:-:_:g'`
265	eval $withopt="$optarg"
266	withoptions="$withoptions $option"
267	;;
268	--without-*)
269	withopt=`echo ${option} \| sed 's:^--::;s:out::;s:-:_:g'`
270	eval $withopt=no
271	withoutoptions="$withoutoptions $option"
272	;;
273	--x) with_x=yes
274	withoptions="$withoptions --with-x"
275	;;
276	--x-i* \| --x-l*) other_options="$other_options $orig_option"
277	;;
278	--*)
279	echo "configure: Unrecognized option: \"$orig_option\"; use --help for usage." >&2
280	exit 1
281	;;
282	*)
283	case $undefs in
284	NOUNDEFS) undefs=$option ;;
285	) echo '**' Can only configure for one host and one target at a time. 1>&2
286	fatal=yes
287	;;
288	esac
289	;;
290	esac
291	done
292
293	# process host and target
294
295	# Do some error checking and defaulting for the host and target type.
296	# The inputs are:
297	# configure --host=HOST --target=TARGET UNDEFS
298	#
299	# The rules are:
300	# 1. You aren't allowed to specify --host, --target, and undefs at the
301	# same time.
302	# 2. Host defaults to undefs.
303	# 3. If undefs is not specified, then host defaults to the current host,
304	# as determined by config.guess.
305	# 4. Target defaults to undefs.
306	# 5. If undefs is not specified, then target defaults to host.
307
308	case "${fatal}" in
309	"")
310	# Make sure that host, target & undefs aren't all specified at the
311	# same time.
312	case $host_alias---$target_alias---$undefs in
313	NOHOST------ \| ---NOTARGET--- \| ------NOUNDEFS)
314	;;
315	) echo '**' Can only configure for one host and one target at a time. 1>&2
316	fatal=yes
317	break 2
318	;;
319	esac
320
321	# Now, do defaulting for host.
322	case $host_alias in
323	NOHOST)
324	case $undefs in
325	NOUNDEFS)
326	# Neither --host option nor undefs were present.
327	# Call config.guess.
328	guesssys=`echo ${progname} \| sed 's/configure$/config.guess/'`
329	if host_alias=`${guesssys}`
330	then
331	# If the string we are going to use for
332	# the target is a prefix of the string
333	# we just guessed for the host, then
334	# assume we are running native, and force
335	# the same string for both target and host.
336	case $target_alias in
337	NOTARGET) ;;
338	*)
339	if expr $host_alias : $target_alias >/dev/null
340	then
341	host_alias=$target_alias
342	fi
343	;;
344	esac
345	echo "Configuring for a ${host_alias} host." 1>&2
346	arguments="--host=$host_alias $arguments"
347	else
348	echo 'Config.guess failed to determine the host type. You need to specify one.' 1>&2
349	fatal=yes
350	fi
351	;;
352	*)
353	host_alias=$undefs
354	;;
355	esac
356	esac
357
358	# Do defaulting for target. If --target option isn't present, default
359	# to undefs. If undefs isn't present, default to host.
360	case $target_alias in
361	NOTARGET)
362	case $undefs in
363	NOUNDEFS)
364	target_alias=$host_alias
365	;;
366	*)
367	target_alias=$undefs
368	;;
369	esac
370	esac
371	;;
372	*) ;;
373	esac
374
375	if [ -n "${fatal}" -o "${host_alias}" = "help" ] ; then
376	exec 1>&2
377	echo Usage: configure [OPTIONS] [HOST]
378	echo
379	echo Options: [defaults in brackets]
380	echo ' --prefix=MYDIR install into MYDIR [/usr/kerberos]'
381	echo ' --exec-prefix=MYDIR install host-dependent files into MYDIR [/usr/kerberos]'
382	echo ' --help print this message [normal config]'
383	echo ' --build=BUILD configure for building on BUILD [BUILD=HOST]'
384	echo ' --host=HOST configure for HOST [determined via config.guess]'
385	echo ' --norecursion configure this directory only [recurse]'
386	echo ' --program-prefix=FOO prepend FOO to installed program names [""]'
387	echo ' --program-suffix=FOO append FOO to installed program names [""]'
388	echo ' --program-transform-name=P transform installed names by sed pattern P [""]'
389	echo ' --site=SITE configure with site-specific makefile for SITE'
390	echo ' --srcdir=DIR find the sources in DIR [. or ..]'
391	echo ' --target=TARGET configure for TARGET [TARGET=HOST]'
392	echo ' --tmpdir=TMPDIR create temporary files in TMPDIR [/tmp]'
393	echo ' --nfp configure for software floating point [hard float]'
394	echo ' --with-FOO, --with-FOO=BAR package FOO is available (parameter BAR)'
395	echo ' --without-FOO package FOO is NOT available'
396	echo ' --enable-FOO, --enable-FOO=BAR include feature FOO (parameter BAR)'
397	echo ' --disable-FOO do not include feature FOO'
398	echo
399	echo 'Where HOST and TARGET are something like "sparc-sunos", "mips-sgi-irix5", etc.'
400	echo
401	if [ -r config.status ] ; then
402	cat config.status
403	fi
404
405	exit 1
406	fi
407
408	configsub=`echo ${progname} \| sed 's/configure$/config.sub/'`
409	moveifchange=`echo ${progname} \| sed 's/configure$/move-if-change/'`
410
411	# this is a hack. sun4 must always be a valid host alias or this will fail.
412	if ${configsub} sun4 >/dev/null 2>&1 ; then
413	true
414	else
415	echo '***' cannot find config.sub. 1>&2
416	exit 1
417	fi
418
419	touch config.junk
420	if ${moveifchange} config.junk config.trash ; then
421	true
422	else
423	echo '***' cannot find move-if-change. 1>&2
424	exit 1
425	fi
426	rm -f config.junk config.trash
427
428	case "${srcdir}" in
429	"")
430	if [ -r configure.in ] ; then
431	srcdir=.
432	else
433	if [ -r ${progname}.in ] ; then
434	srcdir=`echo ${progname} \| sed 's:/configure$::'`
435	else
436	echo '***' "Can't find configure.in. Try using --srcdir=some_dir" 1>&2
437	exit 1
438	fi
439	fi
440	;;
441	*) ;;
442	esac
443
444	### warn about some conflicting configurations.
445
446	case "${srcdir}" in
447	".") ;;
448	*)
449	if [ -f ${srcdir}/config.status ] ; then
450	echo '***' Cannot configure here in \"${PWD=`pwd`}\" when \"${srcdir}\" is currently configured. 1>&2
451	exit 1
452	fi
453	esac
454
455	# default exec_prefix
456	case "${exec_prefixoption}" in
457	"") exec_prefix="\$(prefix)" ;;
458	*) ;;
459	esac
460
461	### break up ${srcdir}/configure.in.
462	case "`grep '^# per\-host:' ${srcdir}/configure.in`" in
463	"")
464	echo '***' ${srcdir}/configure.in has no \"per-host:\" line. 1>&2
465	exit 1
466	;;
467	*) ;;
468	esac
469
470	case "`grep '^# per\-target:' ${srcdir}/configure.in`" in
471	"")
472	echo '***' ${srcdir}/configure.in has no \"per-target:\" line. 1>&2
473	exit 1
474	;;
475	*) ;;
476	esac
477
478	case "${TMPDIR}" in
479	"") TMPDIR=/tmp ; export TMPDIR ;;
480	*) ;;
481	esac
482
483	# keep this filename short for &%%$# 14 char file names
484	tmpfile=${TMPDIR}/cONf$$
485	# Note that under many versions of sh a trap handler for 0 will override any
486	# exit status you explicitly specify! At this point, the only non-error exit
487	# is at the end of the script; these actions are duplicated there, minus
488	# the "exit 1". Don't use "exit 0" anywhere after this without resetting the
489	# trap handler, or you'll lose.
490	trap "rm -f ${tmpfile}.com ${tmpfile}.tgt ${tmpfile}.hst ${tmpfile}.pos; exit 1" 0 1 2 15
491
492	# split ${srcdir}/configure.in into common, per-host, per-target,
493	# and post-target parts. Post-target is optional.
494	sed -e '/^# per\-host:/,$d' ${srcdir}/configure.in > ${tmpfile}.com
495	sed -e '1,/^# per\-host:/d' -e '/^# per\-target:/,$d' ${srcdir}/configure.in > ${tmpfile}.hst
496	if grep '^# post-target:' ${srcdir}/configure.in >/dev/null ; then
497	sed -e '1,/^# per\-target:/d' -e '/^# post\-target:/,$d' ${srcdir}/configure.in > ${tmpfile}.tgt
498	sed -e '1,/^# post\-target:/d' ${srcdir}/configure.in > ${tmpfile}.pos
499	else
500	sed -e '1,/^# per\-target:/d' ${srcdir}/configure.in > ${tmpfile}.tgt
501	echo >${tmpfile}.pos
502	fi
503
504	### do common part of configure.in
505
506	. ${tmpfile}.com
507
508	# some sanity checks on configure.in
509	case "${srctrigger}" in
510	"")
511	echo '***' srctrigger not set in ${PWD=`pwd`}/configure.in. 1>&2
512	exit 1
513	;;
514	*) ;;
515	esac
516
517	case "${build_alias}" in
518	"") ;;
519	*)
520	if result=`${config_shell} ${configsub} ${build_alias}` ; then
521	buildopt="--build=${build_alias}"
522	build_cpu=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\1/'`
523	build_vendor=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\2/'`
524	build_os=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\3/'`
525	build=${build_cpu}-${build_vendor}-${build_os}
526	else
527	echo "Unrecognized build system name ${build_alias}." 1>&2
528	exit 1
529	fi
530	;;
531	esac
532
533	if result=`${config_shell} ${configsub} ${host_alias}` ; then
534	true
535	else
536	echo "Unrecognized host system name ${host_alias}." 1>&2
537	exit 1
538	fi
539	host_cpu=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\1/'`
540	host_vendor=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\2/'`
541	host_os=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\3/'`
542	host=${host_cpu}-${host_vendor}-${host_os}
543
544	. ${tmpfile}.hst
545
546	if result=`${config_shell} ${configsub} ${target_alias}` ; then
547	true
548	else
549	echo "Unrecognized target system name ${target_alias}." 1>&2
550	exit 1
551	fi
552	target_cpu=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\1/'`
553	target_vendor=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\2/'`
554	target_os=`echo $result \| sed 's/^\(.\)-\(.\)-\(.*\)$/\3/'`
555	target=${target_cpu}-${target_vendor}-${target_os}
556
557	. ${tmpfile}.tgt
558
559	# Find the source files, if location was not specified.
560	case "${srcdir}" in
561	"")
562	srcdirdefaulted=1
563	srcdir=.
564	if [ ! -r ${srctrigger} ] ; then
565	srcdir=..
566	fi
567	;;
568	*) ;;
569	esac
570
571	if [ ! -r ${srcdir}/${srctrigger} ] ; then
572	case "${srcdirdefaulted}" in
573	"") echo '***' "${progname}: Can't find ${srcname} sources in ${PWD=`pwd`}/${srcdir}" 1>&2 ;;
574	) echo '**' "${progname}: Can't find ${srcname} sources in ${PWD=`pwd`}/. or ${PWD=`pwd`}/.." 1>&2 ;;
575	esac
576
577	echo '***' \(At least ${srctrigger} is missing.\) 1>&2
578	exit 1
579	fi
580
581	# Some systems (e.g., one of the i386-aix systems the gas testers are
582	# using) don't handle "\$" correctly, so don't use it here.
583	tooldir='$(exec_prefix)'/${target_alias}
584
585	if [ "${host_alias}" != "${target_alias}" ] ; then
586	if [ "${program_prefixoption}" = "" ] ; then
587	if [ "${program_suffixoption}" = "" ] ; then
588	if [ "${program_transform_nameoption}" = "" ] ; then
589	program_prefix=${target_alias}- ;
590	fi
591	fi
592	fi
593	fi
594
595	# Merge program_prefix and program_suffix onto program_transform_name
596	# Use a double $ so that make ignores it
597	if [ "${program_suffix}" != "" ] ; then
598	program_transform_name="-e s,\$\$,${program_suffix}, ${program_transform_name}"
599	fi
600
601	if [ "${program_prefix}" != "" ] ; then
602	program_transform_name="-e s,^,${program_prefix}, ${program_transform_name}"
603	fi
604
605	for subdir in . ${subdirs} ; do
606
607	# ${subdir} is relative path from . to the directory we're currently
608	# configuring.
609	# ${invsubdir} is inverse of ${subdir), with trailing /, if needed.
610	invsubdir=`echo ${subdir}/ \| sed -e 's\|\./\|\|g' -e 's\|[^/]*/\|../\|g'`
611
612	### figure out what to do with srcdir
613	case "${srcdir}" in
614	".") # no -srcdir option. We're building in place.
615	makesrcdir=. ;;
616	/*) # absolute path
617	makesrcdir=`echo ${srcdir}/${subdir} \| sed -e 's\|/\.$\|\|'`
618	;;
619	*) # otherwise relative
620	case "${subdir}" in
621	.) makesrcdir=${srcdir} ;;
622	*) makesrcdir=${invsubdir}${srcdir}/${subdir} ;;
623	esac
624	;;
625	esac
626
627	if [ "${subdir}/" != "./" ] ; then
628	Makefile=${subdir}/Makefile
629	fi
630
631	if [ ! -d ${subdir} ] ; then
632	if mkdir ${subdir} ; then
633	true
634	else
635	echo '***' "${progname}: could not make ${PWD=`pwd`}/${subdir}" 1>&2
636	exit 1
637	fi
638	fi
639
640	case "${removing}" in
641	"")
642	case "${subdir}" in
643	.) ;;
644	*) eval echo Building in ${subdir} ${redirect} ;;
645	esac
646
647	# FIXME Should this be done recursively ??? (Useful for e.g. gdbtest)
648	# Set up the list of links to be made.
649	# ${links} is the list of link names, and ${files} is the list of names to link to.
650
651	# Make the links.
652	configlinks="${links}"
653	if [ -r ${subdir}/config.status ] ; then
654	mv -f ${subdir}/config.status ${subdir}/config.back
655	fi
656	while [ -n "${files}" ] ; do
657	# set file to car of files, files to cdr of files
658	set ${files}; file=$1; shift; files=$*
659	set ${links}; link=$1; shift; links=$*
660
661	if [ ! -r ${srcdir}/${file} ] ; then
662	echo '***' "${progname}: cannot create a link \"${link}\"," 1>&2
663	echo '***' "since the file \"${srcdir}/${file}\" does not exist." 1>&2
664	exit 1
665	fi
666
667	${remove} -f ${link}
668	# Make a symlink if possible, otherwise try a hard link
669	if ${symbolic_link} ${srcdir}/${file} ${link} >/dev/null 2>&1 ; then
670	true
671	else
672	# We need to re-remove the file because Lynx leaves a
673	# very strange directory there when it fails an NFS symlink.
674	${remove} -r -f ${link}
675	${hard_link} ${srcdir}/${file} ${link}
676	fi
677	if [ ! -r ${link} ] ; then
678	echo '***' "${progname}: unable to link \"${link}\" to \"${srcdir}/${file}\"." 1>&2
679	exit 1
680	fi
681
682	echo "Linked \"${link}\" to \"${srcdir}/${file}\"."
683	done
684
685	# Create a .gdbinit file which runs the one in srcdir
686	# and tells GDB to look there for source files.
687
688	if [ -r ${srcdir}/${subdir}/.gdbinit ] ; then
689	case ${srcdir} in
690	.) ;;
691	*) cat > ${subdir}/.gdbinit <<EOF
692	# ${NO_EDIT}
693	dir ${makesrcdir}
694	dir .
695	source ${makesrcdir}/.gdbinit
696	EOF
697	;;
698	esac
699	fi
700
701	# Install a makefile, and make it set VPATH
702	# if necessary so that the sources are found.
703	# Also change its value of srcdir.
704	# NOTE: Makefile generation constitutes the majority of the time in configure. Hence, this section has
705	# been somewhat optimized and is perhaps a bit twisty.
706
707	# code is order so as to try to sed the smallest input files we know.
708
709	# the four makefile fragments MUST end up in the resulting Makefile in this order:
710	# package, target, host, and site. so do these separately because I don't trust the
711	# order of sed -e expressions.
712
713	if [ -f ${srcdir}/${subdir}/${Makefile_in} ] ; then
714
715	# Conditionalize for this site from "Makefile.in" (or whatever it's called) into Makefile.tem
716	rm -f ${subdir}/Makefile.tem
717	case "${site}" in
718	"") cp ${srcdir}/${subdir}/${Makefile_in} ${subdir}/Makefile.tem ;;
719	*)
720	site_makefile_frag=${srcdir}/config/ms-${site}
721
722	if [ -f ${site_makefile_frag} ] ; then
723	sed -e "/^####/ r ${site_makefile_frag}" ${srcdir}/${subdir}/${Makefile_in} \
724	> ${subdir}/Makefile.tem
725	else
726	cp ${srcdir}/${subdir}/${Makefile_in} ${subdir}/Makefile.tem
727	site_makefile_frag=
728	fi
729	;;
730	esac
731	# working copy now in ${subdir}/Makefile.tem
732
733	# Conditionalize the makefile for this host.
734	rm -f ${Makefile}
735	case "${host_makefile_frag}" in
736	"") mv ${subdir}/Makefile.tem ${Makefile} ;;
737	*)
738	if [ ! -f ${host_makefile_frag} ] ; then
739	host_makefile_frag=${srcdir}/${host_makefile_frag}
740	fi
741	if [ -f ${host_makefile_frag} ] ; then
742	sed -e "/^####/ r ${host_makefile_frag}" ${subdir}/Makefile.tem > ${Makefile}
743	else
744	echo '***' Expected host makefile fragment \"${host_makefile_frag}\" 1>&2
745	echo '***' is missing in ${PWD=`pwd`}. 1>&2
746	mv ${subdir}/Makefile.tem ${Makefile}
747	fi
748	esac
749	# working copy now in ${Makefile}
750
751	# Conditionalize the makefile for this target.
752	rm -f ${subdir}/Makefile.tem
753	case "${target_makefile_frag}" in
754	"") mv ${Makefile} ${subdir}/Makefile.tem ;;
755	*)
756	if [ ! -f ${target_makefile_frag} ] ; then
757	target_makefile_frag=${srcdir}/${target_makefile_frag}
758	fi
759	if [ -f ${target_makefile_frag} ] ; then
760	sed -e "/^####/ r ${target_makefile_frag}" ${Makefile} > ${subdir}/Makefile.tem
761	else
762	mv ${Makefile} ${subdir}/Makefile.tem
763	target_makefile_frag=
764	fi
765	;;
766	esac
767	# real copy now in ${subdir}/Makefile.tem
768
769	# Conditionalize the makefile for this package.
770	rm -f ${Makefile}
771	case "${package_makefile_frag}" in
772	"") mv ${subdir}/Makefile.tem ${Makefile} ;;
773	*)
774	if [ ! -f ${package_makefile_frag} ] ; then
775	package_makefile_frag=${srcdir}/${package_makefile_frag}
776	fi
777	if [ -f ${package_makefile_frag} ] ; then
778	sed -e "/^####/ r ${package_makefile_frag}" ${subdir}/Makefile.tem > ${Makefile}
779	rm -f ${subdir}/Makefile.tem
780	else
781	echo '***' Expected package makefile fragment \"${package_makefile_frag}\" 1>&2
782	echo '***' is missing in ${PWD=`pwd`}. 1>&2
783	mv ${subdir}/Makefile.tem ${Makefile}
784	fi
785	esac
786	# working copy now in ${Makefile}
787
788	mv ${Makefile} ${subdir}/Makefile.tem
789
790	# real copy now in ${subdir}/Makefile.tem
791
792	# prepend warning about editting, and a bunch of variables.
793	rm -f ${Makefile}
794	cat > ${Makefile} <<EOF
795	# ${NO_EDIT}
796	VPATH = ${makesrcdir}
797	links = ${configlinks}
798	host_alias = ${host_alias}
799	host_cpu = ${host_cpu}
800	host_vendor = ${host_vendor}
801	host_os = ${host_os}
802	host_canonical = ${host_cpu}-${host_vendor}-${host_os}
803	target_alias = ${target_alias}
804	target_cpu = ${target_cpu}
805	target_vendor = ${target_vendor}
806	target_os = ${target_os}
807	target_canonical = ${target_cpu}-${target_vendor}-${target_os}
808	EOF
809	case "${build}" in
810	"") ;;
811	*) cat >> ${Makefile} << EOF
812	build_alias = ${build_alias}
813	build_cpu = ${build_cpu}
814	build_vendor = ${build_vendor}
815	build_os = ${build_os}
816	build_canonical = ${build_cpu}-${build_vendor}-${build_os}
817	EOF
818	esac
819
820	case "${package_makefile_frag}" in
821	"") ;;
822	/*) echo package_makefile_frag = ${package_makefile_frag} >>${Makefile} ;;
823	*) echo package_makefile_frag = ${invsubdir}${package_makefile_frag} >>${Makefile} ;;
824	esac
825
826	case "${target_makefile_frag}" in
827	"") ;;
828	/*) echo target_makefile_frag = ${target_makefile_frag} >>${Makefile} ;;
829	*) echo target_makefile_frag = ${invsubdir}${target_makefile_frag} >>${Makefile} ;;
830	esac
831
832	case "${host_makefile_frag}" in
833	"") ;;
834	/*) echo host_makefile_frag = ${host_makefile_frag} >>${Makefile} ;;
835	*) echo host_makefile_frag = ${invsubdir}${host_makefile_frag} >>${Makefile} ;;
836	esac
837
838	if [ "${site_makefile_frag}" != "" ] ; then
839	echo site_makefile_frag = ${invsubdir}${site_makefile_frag} >>${Makefile}
840	fi
841
842	# make sure that some sort of reasonable default exists for these
843	# two variables
844	CXX=${CXX-"g++ -O"}
845	CC=${CC-cc}
846
847	# reset prefix, exec_prefix, srcdir, SUBDIRS, NONSUBDIRS,
848	# remove any form feeds.
849	if [ -z "${subdirs}" ]; then
850	rm -f ${subdir}/Makefile.tem2
851	sed -e "s:^SUBDIRS[ ]=.$:SUBDIRS = ${configdirs}:" \
852	-e "s:^NONSUBDIRS[ ]=.$:NONSUBDIRS = ${noconfigdirs}:" \
853	${subdir}/Makefile.tem > ${subdir}/Makefile.tem2
854	rm -f ${subdir}/Makefile.tem
855	mv ${subdir}/Makefile.tem2 ${subdir}/Makefile.tem
856	fi
857	sed -e "s:^prefix[ ]=.$:prefix = ${prefix}:" \
858	-e "s:^exec_prefix[ ]=.$:exec_prefix = ${exec_prefix}:" \
859	-e "s:^SHELL[ ]=.$:SHELL = ${config_shell}:" \
860	-e "s:^srcdir[ ]=.$:srcdir = ${makesrcdir}:" \
861	-e "s///" \
862	-e "s:^program_prefix[ ]=.$:program_prefix = ${program_prefix}:" \
863	-e "s:^program_suffix[ ]=.$:program_suffix = ${program_suffix}:" \
864	-e "s:^program_transform_name[ ]=.$:program_transform_name = ${program_transform_name}:" \
865	-e "s:^tooldir[ ]=.$:tooldir = ${tooldir}:" \
866	${subdir}/Makefile.tem >> ${Makefile}
867	# final copy now in ${Makefile}
868
869	else
870	echo "No Makefile.in found in ${srcdir}/${subdir}, unable to configure" 1>&2
871	fi
872
873	rm -f ${subdir}/Makefile.tem
874
875	case "${host_makefile_frag}" in
876	"") using= ;;
877	*) using="and \"${host_makefile_frag}\"" ;;
878	esac
879
880	case "${target_makefile_frag}" in
881	"") ;;
882	*) using="${using} and \"${target_makefile_frag}\"" ;;
883	esac
884
885	case "${site_makefile_frag}" in
886	"") ;;
887	*) using="${using} and \"${site_makefile_frag}\"" ;;
888	esac
889
890	newusing=`echo "${using}" \| sed 's/and/using/'`
891	using=${newusing}
892	echo "Created \"${Makefile}\" in" ${PWD=`pwd`} ${using}
893
894	. ${tmpfile}.pos
895
896	# describe the chosen configuration in config.status.
897	# Make that file a shellscript which will reestablish
898	# the same configuration. Used in Makefiles to rebuild
899	# Makefiles.
900
901	case "${norecursion}" in
902	"") arguments="${arguments} --norecursion" ;;
903	*) ;;
904	esac
905
906	if [ ${subdir} = . ] ; then
907	echo "#!/bin/sh
908	# ${NO_EDIT}
909	# This directory was configured as follows:
910	${progname}" ${arguments} "
911	# ${using}" > ${subdir}/config.new
912	else
913	echo "#!/bin/sh
914	# ${NO_EDIT}
915	# This directory was configured as follows:
916	cd ${invsubdir}
917	${progname}" ${arguments} "
918	# ${using}" > ${subdir}/config.new
919	fi
920	chmod a+x ${subdir}/config.new
921	if [ -r ${subdir}/config.back ] ; then
922	mv -f ${subdir}/config.back ${subdir}/config.status
923	fi
924	${moveifchange} ${subdir}/config.new ${subdir}/config.status
925	;;
926
927	*) rm -f ${Makefile} ${subdir}/config.status ${links} ;;
928	esac
929	done
930
931	# If there are subdirectories, then recur.
932	if [ -z "${norecursion}" -a -n "${configdirs}" ] ; then
933	for configdir in ${configdirs} ; do
934
935	if [ -d ${srcdir}/${configdir} ] ; then
936	eval echo Configuring ${configdir}... ${redirect}
937	case "${srcdir}" in
938	".") ;;
939	*)
940	if [ ! -d ./${configdir} ] ; then
941	if mkdir ./${configdir} ; then
942	true
943	else
944	echo '***' "${progname}: could not make ${PWD=`pwd`}/${configdir}" 1>&2
945	exit 1
946	fi
947	fi
948	;;
949	esac
950
951	POPDIR=${PWD=`pwd`}
952	cd ${configdir}
953
954	### figure out what to do with srcdir
955	case "${srcdir}" in
956	".") newsrcdir=${srcdir} ;; # no -srcdir option. We're building in place.
957	/*) # absolute path
958	newsrcdir=${srcdir}/${configdir}
959	srcdiroption="--srcdir=${newsrcdir}"
960	;;
961	*) # otherwise relative
962	newsrcdir=../${srcdir}/${configdir}
963	srcdiroption="--srcdir=${newsrcdir}"
964	;;
965	esac
966
967	### check for guested configure, otherwise fix possibly relative progname
968	if [ -f ${newsrcdir}/configure ] ; then
969	recprog=${newsrcdir}/configure
970	elif [ -f ${newsrcdir}/configure.in ] ; then
971	case "${progname}" in
972	/*) recprog=${progname} ;;
973	*) recprog=../${progname} ;;
974	esac
975	else
976	eval echo No configuration information in ${configdir} ${redirect}
977	recprog=
978	fi
979
980	### The recursion line is here.
981	if [ ! -z "${recprog}" ] ; then
982	if eval ${config_shell} ${recprog} ${verbose} ${buildopt} --host=${host_alias} --target=${target_alias} \
983	${prefixoption} ${tmpdiroption} ${exec_prefixoption} \
984	${srcdiroption} ${program_prefixoption} ${program_suffixoption} ${program_transform_nameoption} ${site_option} ${withoptions} ${withoutoptions} ${enableoptions} ${disableoptions} ${removing} ${other_options} ${redirect} ; then
985	true
986	else
987	echo Configure in `pwd` failed, exiting. 1>&2
988	exit 1
989	fi
990	fi
991
992	cd ${POPDIR}
993	fi
994	done
995	fi
996
997	# Perform the same cleanup as the trap handler, minus the "exit 1" of course,
998	# and reset the trap handler.
999	rm -f ${tmpfile}.com ${tmpfile}.tgt ${tmpfile}.hst ${tmpfile}.pos
1000	trap 0
1001
1002	exit 0
1003
1004	#
1005	# Local Variables:
1006	# fill-column: 131
1007	# End:
1008	#
1009
1010	# end of configure

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