1# Configure fragment invoked in the post-target section for subdirs
2# wanting multilib support.
3#
4# Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
5# 2005, 2006, 2007, 2008, 2010, 2011  Free Software Foundation, Inc.
6#
7# This file is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 2 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program; if not, write to the Free Software
19# Foundation, Inc., 51 Franklin Street, Fifth Floor,
20# Boston, MA 02110-1301, USA.
21#
22# As a special exception to the GNU General Public License, if you
23# distribute this file as part of a program that contains a
24# configuration script generated by Autoconf, you may include it under
25# the same distribution terms that you use for the rest of that program.
26#
27# Please report bugs to <gcc-bugs@gnu.org>
28# and send patches to <gcc-patches@gnu.org>.
29
30# It is advisable to support a few --enable/--disable options to let the
31# user select which libraries s/he really wants.
32#
33# Subdirectories wishing to use multilib should put the following lines
34# in the "post-target" section of configure.in.
35#
36# if [ "${srcdir}" = "." ] ; then
37#   if [ "${with_target_subdir}" != "." ] ; then
38#     . ${with_multisrctop}../../config-ml.in
39#   else
40#     . ${with_multisrctop}../config-ml.in
41#   fi
42# else
43#   . ${srcdir}/../config-ml.in
44# fi
45#
46#
47# Things are complicated because 6 separate cases must be handled:
48# 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
49#
50# srcdir=. is special.  It must handle make programs that don't handle VPATH.
51# To implement this, a symlink tree is built for each library and for each
52# multilib subdir.
53#
54# The build tree is layed out as
55#
56# ./
57#   newlib
58#   m68020/
59#          newlib
60#          m68881/
61#                 newlib
62#
63# The nice feature about this arrangement is that inter-library references
64# in the build tree work without having to care where you are.  Note that
65# inter-library references also work in the source tree because symlink trees
66# are built when srcdir=.
67#
68# Unfortunately, trying to access the libraries in the build tree requires
69# the user to manually choose which library to use as GCC won't be able to
70# find the right one.  This is viewed as the lesser of two evils.
71#
72# Configure variables:
73# ${with_target_subdir} = "." for native, or ${target_alias} for cross.
74# Set by top level Makefile.
75# ${with_multisrctop} = how many levels of multilibs there are in the source
76# tree.  It exists to handle the case of configuring in the source tree:
77# ${srcdir} is not constant.
78# ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
79#
80# Makefile variables:
81# MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
82# (FIXME: note that this is different than ${with_multisrctop}.  Check out.).
83# MULTIBUILDTOP = number of multilib levels in build tree
84# MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
85# (only defined in each library's main Makefile).
86# MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
87# (only defined in each multilib subdir).
88
89# FIXME: Multilib is currently disabled by default for everything other than
90# newlib.  It is up to each target to turn on multilib support for the other
91# libraries as desired.
92
93# Autoconf incoming variables:
94# srcdir, host, ac_configure_args
95#
96# We *could* figure srcdir and host out, but we'd have to do work that
97# our caller has already done to figure them out and requiring these two
98# seems reasonable.
99# Note that `host' in this case is GCC's `target'.  Target libraries are
100# configured for a particular host.
101
102Makefile=${ac_file-Makefile}
103ml_config_shell=${CONFIG_SHELL-/bin/sh}
104ml_realsrcdir=${srcdir}
105
106# Scan all the arguments and set all the ones we need.
107
108ml_verbose=--verbose
109for option in ${ac_configure_args}
110do
111  # strip single quotes surrounding individual options
112  case $option in
113  \'*\') eval option=$option ;;
114  esac
115
116  case $option in
117  --*) ;;
118  -*) option=-$option ;;
119  esac
120
121  case $option in
122  --*=*)
123	optarg=`echo $option | sed -e 's/^[^=]*=//'`
124	;;
125  esac
126
127  case $option in
128  --disable-*)
129	enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
130	eval $enableopt=no
131	;;
132  --enable-*)
133	case "$option" in
134	*=*)	;;
135	*)	optarg=yes ;;
136	esac
137	enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
138	# enable_shared and enable_static are handled by configure.
139	# Don't undo its work.
140	case $enableopt in
141	enable_shared | enable_static) ;;
142	*) eval $enableopt="$optarg" ;;
143	esac
144	;;
145  --norecursion | --no-recursion)
146	ml_norecursion=yes
147	;;
148  --silent | --sil* | --quiet | --q*)
149	ml_verbose=--silent
150	;;
151  --verbose | --v | --verb*)
152	ml_verbose=--verbose
153	;;
154  --with-*)
155	case "$option" in
156	*=*)	;;
157	*)	optarg=yes ;;
158	esac
159	withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
160	eval $withopt="$optarg"
161	;;
162  --without-*)
163	withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
164	eval $withopt=no
165	;;
166  esac
167done
168
169# Only do this if --enable-multilib.
170if [ "${enable_multilib}" = yes ]; then
171
172# Compute whether this is the library's top level directory
173# (ie: not a multilib subdirectory, and not a subdirectory like newlib/src).
174# ${with_multisubdir} tells us we're in the right branch, but we could be
175# in a subdir of that.
176# ??? The previous version could void this test by separating the process into
177# two files: one that only the library's toplevel configure.in ran (to
178# configure the multilib subdirs), and another that all configure.in's ran to
179# update the Makefile.  It seemed reasonable to collapse all multilib support
180# into one file, but it does leave us with having to perform this test.
181ml_toplevel_p=no
182if [ -z "${with_multisubdir}" ]; then
183  if [ "${srcdir}" = "." ]; then
184    # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
185    # ${with_target_subdir} = "." for native, otherwise target alias.
186    if [ "${with_target_subdir}" = "." ]; then
187      if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
188	ml_toplevel_p=yes
189      fi
190    else
191      if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
192	ml_toplevel_p=yes
193      fi
194    fi
195  else
196    # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
197    if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
198      ml_toplevel_p=yes
199    fi
200  fi
201fi
202
203# If this is the library's top level directory, set multidirs to the
204# multilib subdirs to support.  This lives at the top because we need
205# `multidirs' set right away.
206
207if [ "${ml_toplevel_p}" = yes ]; then
208
209multidirs=
210for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
211  dir=`echo $i | sed -e 's/;.*$//'`
212  if [ "${dir}" = "." ]; then
213    true
214  else
215    if [ -z "${multidirs}" ]; then
216      multidirs="${dir}"
217    else
218      multidirs="${multidirs} ${dir}"
219    fi
220  fi
221done
222
223# Target libraries are configured for the host they run on, so we check
224# $host here, not $target.
225
226case "${host}" in
227arm-*-*)
228	if [ x"$enable_fpu" = xno ]
229	then
230	  old_multidirs=${multidirs}
231	  multidirs=""
232	  for x in ${old_multidirs}; do
233	    case "${x}" in
234	      *fpu*) : ;;
235	      *) multidirs="${multidirs} ${x}" ;;
236	    esac
237	  done
238	fi
239	if [ x"$enable_26bit" = xno ]
240	then
241	  old_multidirs=${multidirs}
242	  multidirs=""
243	  for x in ${old_multidirs}; do
244	    case "${x}" in
245	      *26bit*) : ;;
246	      *) multidirs="${multidirs} ${x}" ;;
247	    esac
248	  done
249	fi
250	if [ x"$enable_underscore" = xno ]
251	then
252	  old_multidirs=${multidirs}
253	  multidirs=""
254	  for x in ${old_multidirs}; do
255	    case "${x}" in
256	      *under*) : ;;
257	      *) multidirs="${multidirs} ${x}" ;;
258	    esac
259	  done
260	fi
261	if [ x"$enable_interwork" = xno ]
262	then
263	  old_multidirs=${multidirs}
264	  multidirs=""
265	  for x in ${old_multidirs}; do
266	    case "${x}" in
267	      *interwork*) : ;;
268	      *) multidirs="${multidirs} ${x}" ;;
269	    esac
270	  done
271	fi
272	if [ x$enable_biendian = xno ]
273	then
274	  old_multidirs="${multidirs}"
275	  multidirs=""
276	  for x in ${old_multidirs}; do
277	    case "$x" in
278	      *le* ) : ;;
279	      *be* ) : ;;
280	      *) multidirs="${multidirs} ${x}" ;;
281	    esac
282	  done
283	fi
284	if [ x"$enable_nofmult" = xno ]
285	then
286	  old_multidirs="${multidirs}"
287	  multidirs=""
288	  for x in ${old_multidirs}; do
289	    case "$x" in
290	      *nofmult* ) : ;;
291	      *) multidirs="${multidirs} ${x}" ;;
292	    esac
293	  done
294	fi
295	;;
296m68*-*-*)
297	if [ x$enable_softfloat = xno ]
298	then
299	  old_multidirs="${multidirs}"
300	  multidirs=""
301	  for x in ${old_multidirs}; do
302	    case "$x" in
303	      *soft-float* ) : ;;
304	      *) multidirs="${multidirs} ${x}" ;;
305	    esac
306	  done
307	fi
308	if [ x$enable_m68881 = xno ]
309	then
310	  old_multidirs="${multidirs}"
311	  multidirs=""
312	  for x in ${old_multidirs}; do
313	    case "$x" in
314	      *m68881* ) : ;;
315	      *) multidirs="${multidirs} ${x}" ;;
316	    esac
317	  done
318	fi
319	if [ x$enable_m68000 = xno ]
320	then
321	  old_multidirs="${multidirs}"
322	  multidirs=""
323	  for x in ${old_multidirs}; do
324	    case "$x" in
325	      *m68000* ) : ;;
326	      *) multidirs="${multidirs} ${x}" ;;
327	    esac
328	  done
329	fi
330	if [ x$enable_m68020 = xno ]
331	then
332	  old_multidirs="${multidirs}"
333	  multidirs=""
334	  for x in ${old_multidirs}; do
335	    case "$x" in
336	      *m68020* ) : ;;
337	      *) multidirs="${multidirs} ${x}" ;;
338	    esac
339	  done
340	fi
341	;;
342mips*-*-*)
343	if [ x$enable_single_float = xno ]
344	then
345	  old_multidirs="${multidirs}"
346	  multidirs=""
347	  for x in ${old_multidirs}; do
348	    case "$x" in
349	      *single* ) : ;;
350	      *) multidirs="${multidirs} ${x}" ;;
351	    esac
352	  done
353	fi
354	if [ x$enable_biendian = xno ]
355	then
356	  old_multidirs="${multidirs}"
357	  multidirs=""
358	  for x in ${old_multidirs}; do
359	    case "$x" in
360	      *el* ) : ;;
361	      *eb* ) : ;;
362	      *) multidirs="${multidirs} ${x}" ;;
363	    esac
364	  done
365	fi
366	if [ x$enable_softfloat = xno ]
367	then
368	  old_multidirs="${multidirs}"
369	  multidirs=""
370	  for x in ${old_multidirs}; do
371	    case "$x" in
372	      *soft-float* ) : ;;
373	      *) multidirs="${multidirs} ${x}" ;;
374	    esac
375	  done
376	fi
377	;;
378powerpc*-*-* | rs6000*-*-*)
379	if [ x$enable_aix64 = xno ]
380	then
381	  old_multidirs="${multidirs}"
382	  multidirs=""
383	  for x in ${old_multidirs}; do
384	    case "$x" in
385	      *ppc64* ) : ;;
386	      *) multidirs="${multidirs} ${x}" ;;
387	    esac
388	  done
389	fi
390	if [ x$enable_pthread = xno ]
391	then
392	  old_multidirs="${multidirs}"
393	  multidirs=""
394	  for x in ${old_multidirs}; do
395	    case "$x" in
396	      *pthread* ) : ;;
397	      *) multidirs="${multidirs} ${x}" ;;
398	    esac
399	  done
400	fi
401	if [ x$enable_softfloat = xno ]
402	then
403	  old_multidirs="${multidirs}"
404	  multidirs=""
405	  for x in ${old_multidirs}; do
406	    case "$x" in
407	      *soft-float* ) : ;;
408	      *) multidirs="${multidirs} ${x}" ;;
409	    esac
410	  done
411	fi
412	if [ x$enable_powercpu = xno ]
413	then
414	  old_multidirs="${multidirs}"
415	  multidirs=""
416	  for x in ${old_multidirs}; do
417	    case "$x" in
418	      power | */power | */power/* ) : ;;
419	      *) multidirs="${multidirs} ${x}" ;;
420	    esac
421	  done
422	fi
423	if [ x$enable_powerpccpu = xno ]
424	then
425	  old_multidirs="${multidirs}"
426	  multidirs=""
427	  for x in ${old_multidirs}; do
428	    case "$x" in
429	      *powerpc* ) : ;;
430	      *) multidirs="${multidirs} ${x}" ;;
431	    esac
432	  done
433	fi
434	if [ x$enable_powerpcos = xno ]
435	then
436	  old_multidirs="${multidirs}"
437	  multidirs=""
438	  for x in ${old_multidirs}; do
439	    case "$x" in
440	      *mcall-linux* | *mcall-solaris* ) : ;;
441	      *) multidirs="${multidirs} ${x}" ;;
442	    esac
443	  done
444	fi
445	if [ x$enable_biendian = xno ]
446	then
447	  old_multidirs="${multidirs}"
448	  multidirs=""
449	  for x in ${old_multidirs}; do
450	    case "$x" in
451	      *mlittle* | *mbig* ) : ;;
452	      *) multidirs="${multidirs} ${x}" ;;
453	    esac
454	  done
455	fi
456	if [ x$enable_sysv = xno ]
457	then
458	  old_multidirs="${multidirs}"
459	  multidirs=""
460	  for x in ${old_multidirs}; do
461	    case "$x" in
462	      *mcall-sysv* ) : ;;
463	      *) multidirs="${multidirs} ${x}" ;;
464	    esac
465	  done
466	fi
467	;;
468esac
469
470# Remove extraneous blanks from multidirs.
471# Tests like `if [ -n "$multidirs" ]' require it.
472multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
473
474# Add code to library's top level makefile to handle building the multilib
475# subdirs.
476
477cat > Multi.tem <<\EOF
478
479PWD_COMMAND=$${PWDCMD-pwd}
480
481# FIXME: There should be an @-sign in front of the `if'.
482# Leave out until this is tested a bit more.
483multi-do:
484	if [ -z "$(MULTIDIRS)" ]; then \
485	  true; \
486	else \
487	  rootpre=`${PWD_COMMAND}`/; export rootpre; \
488	  srcrootpre=`cd $(srcdir); ${PWD_COMMAND}`/; export srcrootpre; \
489	  lib=`echo "$${rootpre}" | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
490	  compiler="$(CC)"; \
491	  for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
492	    dir=`echo $$i | sed -e 's/;.*$$//'`; \
493	    if [ "$${dir}" = "." ]; then \
494	      true; \
495	    else \
496	      if [ -d ../$${dir}/$${lib} ]; then \
497		flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
498		if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
499				CFLAGS="$(CFLAGS) $${flags}" \
500				CCASFLAGS="$(CCASFLAGS) $${flags}" \
501				FCFLAGS="$(FCFLAGS) $${flags}" \
502				FFLAGS="$(FFLAGS) $${flags}" \
503				ADAFLAGS="$(ADAFLAGS) $${flags}" \
504				prefix="$(prefix)" \
505				exec_prefix="$(exec_prefix)" \
506				GCJFLAGS="$(GCJFLAGS) $${flags}" \
507				GOCFLAGS="$(GOCFLAGS) $${flags}" \
508				CXXFLAGS="$(CXXFLAGS) $${flags}" \
509				LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
510				LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
511				LDFLAGS="$(LDFLAGS) $${flags}" \
512				MULTIFLAGS="$${flags}" \
513				DESTDIR="$(DESTDIR)" \
514				INSTALL="$(INSTALL)" \
515				INSTALL_DATA="$(INSTALL_DATA)" \
516				INSTALL_PROGRAM="$(INSTALL_PROGRAM)" \
517				INSTALL_SCRIPT="$(INSTALL_SCRIPT)" \
518				$(DO)); then \
519		  true; \
520		else \
521		  exit 1; \
522		fi; \
523	      else true; \
524	      fi; \
525	    fi; \
526	  done; \
527	fi
528
529# FIXME: There should be an @-sign in front of the `if'.
530# Leave out until this is tested a bit more.
531multi-clean:
532	if [ -z "$(MULTIDIRS)" ]; then \
533	  true; \
534	else \
535	  lib=`${PWD_COMMAND} | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
536	  for dir in : $(MULTIDIRS); do \
537	    test $$dir != : || continue; \
538EOF
539cat >>Multi.tem <<EOF
540	    if [ -f ../\$\${dir}/\$\${lib}/${Makefile} ]; then \\
541EOF
542cat >>Multi.tem <<\EOF
543	      if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
544	      then true; \
545	      else exit 1; \
546	      fi; \
547	    else true; \
548	    fi; \
549	  done; \
550	fi
551EOF
552
553cat ${Makefile} Multi.tem > Makefile.tem
554rm -f ${Makefile} Multi.tem
555mv Makefile.tem ${Makefile}
556
557fi # ${ml_toplevel_p} = yes
558
559if [ "${ml_verbose}" = --verbose ]; then
560  echo "Adding multilib support to ${Makefile} in ${ml_realsrcdir}"
561  if [ "${ml_toplevel_p}" = yes ]; then
562    echo "multidirs=${multidirs}"
563  fi
564  echo "with_multisubdir=${with_multisubdir}"
565fi
566
567if [ "${srcdir}" = "." ]; then
568  if [ "${with_target_subdir}" != "." ]; then
569    ml_srcdotdot="../"
570  else
571    ml_srcdotdot=""
572  fi
573else
574  ml_srcdotdot=""
575fi
576
577if [ -z "${with_multisubdir}" ]; then
578  ml_subdir=
579  ml_builddotdot=
580  : # ml_srcdotdot= # already set
581else
582  ml_subdir="/${with_multisubdir}"
583  # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
584  ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
585  if [ "$srcdir" = "." ]; then
586    ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
587  else
588    : # ml_srcdotdot= # already set
589  fi
590fi
591
592if [ "${ml_toplevel_p}" = yes ]; then
593  ml_do='$(MAKE)'
594  ml_clean='$(MAKE)'
595else
596  ml_do=true
597  ml_clean=true
598fi
599
600# TOP is used by newlib and should not be used elsewhere for this purpose.
601# MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
602# when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
603# FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
604# delete TOP.  Newlib may wish to continue to use TOP for its own purposes
605# of course.
606# MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
607# and lists the subdirectories to recurse into.
608# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
609# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
610# a leading '/'.
611# MULTIDO is used for targets like all, install, and check where
612# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
613# MULTICLEAN is used for the *clean targets.
614#
615# ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
616# currently kept separate because we don't want the *clean targets to require
617# the existence of the compiler (which MULTIDO currently requires) and
618# therefore we'd have to record the directory options as well as names
619# (currently we just record the names and use --print-multi-lib to get the
620# options).
621
622sed -e "s:^TOP[ 	]*=[ 	]*\([./]*\)[ 	]*$:TOP = ${ml_builddotdot}\1:" \
623    -e "s:^MULTISRCTOP[ 	]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
624    -e "s:^MULTIBUILDTOP[ 	]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
625    -e "s:^MULTIDIRS[ 	]*=.*$:MULTIDIRS = ${multidirs}:" \
626    -e "s:^MULTISUBDIR[ 	]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
627    -e "s:^MULTIDO[ 	]*=.*$:MULTIDO = $ml_do:" \
628    -e "s:^MULTICLEAN[ 	]*=.*$:MULTICLEAN = $ml_clean:" \
629	${Makefile} > Makefile.tem
630rm -f ${Makefile}
631mv Makefile.tem ${Makefile}
632
633# If this is the library's top level, configure each multilib subdir.
634# This is done at the end because this is the loop that runs configure
635# in each multilib subdir and it seemed reasonable to finish updating the
636# Makefile before going on to configure the subdirs.
637
638if [ "${ml_toplevel_p}" = yes ]; then
639
640# We must freshly configure each subdirectory.  This bit of code is
641# actually partially stolen from the main configure script.  FIXME.
642
643if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
644
645  if [ "${ml_verbose}" = --verbose ]; then
646    echo "Running configure in multilib subdirs ${multidirs}"
647    echo "pwd: `${PWDCMD-pwd}`"
648  fi
649
650  ml_origdir=`${PWDCMD-pwd}`
651  ml_libdir=`echo "$ml_origdir" | sed -e 's,^.*/,,'`
652  # cd to top-level-build-dir/${with_target_subdir}
653  cd ..
654
655  for ml_dir in ${multidirs}; do
656
657    if [ "${ml_verbose}" = --verbose ]; then
658      echo "Running configure in multilib subdir ${ml_dir}"
659      echo "pwd: `${PWDCMD-pwd}`"
660    fi
661
662    if [ -d ${ml_dir} ]; then true; else
663      # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
664      pathcomp=""
665      for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
666        pathcomp="$pathcomp$d"
667        case "$pathcomp" in
668          -* ) pathcomp=./$pathcomp ;;
669        esac
670        if test ! -d "$pathcomp"; then
671           echo "mkdir $pathcomp" 1>&2
672           mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
673        fi
674        if test ! -d "$pathcomp"; then
675	   exit $lasterr
676        fi
677        pathcomp="$pathcomp/"
678      done
679    fi
680    if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
681
682    # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
683    dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
684
685    case ${srcdir} in
686    ".")
687      echo "Building symlink tree in `${PWDCMD-pwd}`/${ml_dir}/${ml_libdir}"
688      if [ "${with_target_subdir}" != "." ]; then
689	ml_unsubdir="../"
690      else
691	ml_unsubdir=""
692      fi
693      (cd ${ml_dir}/${ml_libdir};
694       ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
695      if [ -f ${ml_dir}/${ml_libdir}/${Makefile} ]; then
696	if [ x"${MAKE}" = x ]; then
697	  (cd ${ml_dir}/${ml_libdir}; make distclean)
698	else
699	  (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
700	fi
701      fi
702      ml_newsrcdir="."
703      ml_srcdiroption=
704      multisrctop=${dotdot}
705      ;;
706    *)
707      case "${srcdir}" in
708      /* | [A-Za-z]:[\\/]* ) # absolute path
709        ml_newsrcdir=${srcdir}
710        ;;
711      *) # otherwise relative
712        ml_newsrcdir=${dotdot}${srcdir}
713        ;;
714      esac
715      ml_srcdiroption="-srcdir=${ml_newsrcdir}"
716      multisrctop=
717      ;;
718    esac
719
720    case "${progname}" in
721    /* | [A-Za-z]:[\\/]* )     ml_recprog=${progname} ;;
722    *)      ml_recprog=${dotdot}${progname} ;;
723    esac
724
725    # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
726    ML_POPDIR=`${PWDCMD-pwd}`
727    cd ${ml_dir}/${ml_libdir}
728
729    if [ -f ${ml_newsrcdir}/configure ]; then
730      ml_recprog="${ml_newsrcdir}/configure"
731    fi
732
733    # find compiler flag corresponding to ${ml_dir}
734    for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
735      dir=`echo $i | sed -e 's/;.*$//'`
736      if [ "${dir}" = "${ml_dir}" ]; then
737        flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
738        break
739      fi
740    done
741    ml_config_env='CC="${CC_}$flags" CXX="${CXX_}$flags" F77="${F77_}$flags" GCJ="${GCJ_}$flags" GFORTRAN="${GFORTRAN_}$flags" GOC="${GOC_}$flags"'
742
743    if [ "${with_target_subdir}" = "." ]; then
744	CC_=$CC' '
745	CXX_=$CXX' '
746	F77_=$F77' '
747	GCJ_=$GCJ' '
748	GFORTRAN_=$GFORTRAN' '
749	GOC_=$GOC' '
750    else
751	# Create a regular expression that matches any string as long
752	# as ML_POPDIR.
753	popdir_rx=`echo "${ML_POPDIR}" | sed 's,.,.,g'`
754	CC_=
755	for arg in ${CC}; do
756	  case $arg in
757	  -[BIL]"${ML_POPDIR}"/*)
758	    CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\1/p"`' ' ;;
759	  "${ML_POPDIR}"/*)
760	    CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
761	  *)
762	    CC_="${CC_}${arg} " ;;
763	  esac
764	done
765
766	CXX_=
767	for arg in ${CXX}; do
768	  case $arg in
769	  -[BIL]"${ML_POPDIR}"/*)
770	    CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
771	  "${ML_POPDIR}"/*)
772	    CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
773	  *)
774	    CXX_="${CXX_}${arg} " ;;
775	  esac
776	done
777
778	F77_=
779	for arg in ${F77}; do
780	  case $arg in
781	  -[BIL]"${ML_POPDIR}"/*)
782	    F77_="${F77_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
783	  "${ML_POPDIR}"/*)
784	    F77_="${F77_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
785	  *)
786	    F77_="${F77_}${arg} " ;;
787	  esac
788	done
789
790	GCJ_=
791	for arg in ${GCJ}; do
792	  case $arg in
793	  -[BIL]"${ML_POPDIR}"/*)
794	    GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
795	  "${ML_POPDIR}"/*)
796	    GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
797	  *)
798	    GCJ_="${GCJ_}${arg} " ;;
799	  esac
800	done
801
802	GFORTRAN_=
803	for arg in ${GFORTRAN}; do
804	  case $arg in
805	  -[BIL]"${ML_POPDIR}"/*)
806	    GFORTRAN_="${GFORTRAN_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
807	  "${ML_POPDIR}"/*)
808	    GFORTRAN_="${GFORTRAN_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
809	  *)
810	    GFORTRAN_="${GFORTRAN_}${arg} " ;;
811	  esac
812	done
813
814	GOC_=
815	for arg in ${GOC}; do
816	  case $arg in
817	  -[BIL]"${ML_POPDIR}"/*)
818	    GOC_="${GOC_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
819	  "${ML_POPDIR}"/*)
820	    GOC_="${GOC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
821	  *)
822	    GOC_="${GOC_}${arg} " ;;
823	  esac
824	done
825
826	if test "x${LD_LIBRARY_PATH+set}" = xset; then
827	  LD_LIBRARY_PATH_=
828	  for arg in `echo "$LD_LIBRARY_PATH" | tr ':' ' '`; do
829	    case "$arg" in
830	    "${ML_POPDIR}"/*)
831	      arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
832	      ;;
833	    esac
834	    if test "x$LD_LIBRARY_PATH_" != x; then
835	      LD_LIBRARY_PATH_=$LD_LIBRARY_PATH_:$arg
836	    else
837	      LD_LIBRARY_PATH_=$arg
838	    fi
839          done
840	  ml_config_env="$ml_config_env LD_LIBRARY_PATH=$LD_LIBRARY_PATH_"
841	fi
842
843	if test "x${SHLIB_PATH+set}" = xset; then
844	  SHLIB_PATH_=
845	  for arg in `echo "$SHLIB_PATH" | tr ':' ' '`; do
846	    case "$arg" in
847	    "${ML_POPDIR}"/*)
848	      arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
849	      ;;
850	    esac
851	    if test "x$SHLIB_PATH_" != x; then
852	      SHLIB_PATH_=$SHLIB_PATH_:$arg
853	    else
854	      SHLIB_PATH_=$arg
855	    fi
856          done
857	  ml_config_env="$ml_config_env SHLIB_PATH=$SHLIB_PATH_"
858	fi
859    fi
860
861    if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
862	--with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
863	${ac_configure_args} ${ml_config_env} ${ml_srcdiroption} ; then
864      true
865    else
866      exit 1
867    fi
868
869    cd "${ML_POPDIR}"
870
871  done
872
873  cd "${ml_origdir}"
874fi
875
876fi # ${ml_toplevel_p} = yes
877fi # ${enable_multilib} = yes
878