1# Configure fragment invoked in the post-target section for subdirs
2# wanting multilib support.
3#
4# It is advisable to support a few --enable/--disable options to let the
5# user select which libraries s/he really wants.
6#
7# Subdirectories wishing to use multilib should put the following lines
8# in the "post-target" section of configure.in.
9#
10# if [ "${srcdir}" = "." ] ; then
11#   if [ "${with_target_subdir}" != "." ] ; then
12#     . ${with_multisrctop}../../config-ml.in
13#   else
14#     . ${with_multisrctop}../config-ml.in
15#   fi
16# else
17#   . ${srcdir}/../config-ml.in
18# fi
19#
20# See librx/configure.in in the libg++ distribution for an example of how
21# to handle autoconf'd libraries.
22#
23# Things are complicated because 6 separate cases must be handled:
24# 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
25#
26# srcdir=. is special.  It must handle make programs that don't handle VPATH.
27# To implement this, a symlink tree is built for each library and for each
28# multilib subdir.
29#
30# The build tree is layed out as
31#
32# ./
33#   libg++
34#   newlib
35#   m68020/
36#          libg++
37#          newlib
38#          m68881/
39#                 libg++
40#                 newlib
41#
42# The nice feature about this arrangement is that inter-library references
43# in the build tree work without having to care where you are.  Note that
44# inter-library references also work in the source tree because symlink trees
45# are built when srcdir=.
46#
47# Unfortunately, trying to access the libraries in the build tree requires
48# the user to manually choose which library to use as GCC won't be able to
49# find the right one.  This is viewed as the lesser of two evils.
50#
51# Configure variables:
52# ${with_target_subdir} = "." for native, or ${target_alias} for cross.
53# Set by top level Makefile.
54# ${with_multisrctop} = how many levels of multilibs there are in the source
55# tree.  It exists to handle the case of configuring in the source tree:
56# ${srcdir} is not constant.
57# ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
58#
59# Makefile variables:
60# MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
61# (FIXME: note that this is different than ${with_multisrctop}.  Check out.).
62# MULTIBUILDTOP = number of multilib levels in build tree
63# MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
64# (only defined in each library's main Makefile).
65# MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
66# (only defined in each multilib subdir).
67
68# FIXME: Multilib is currently disabled by default for everything other than
69# newlib.  It is up to each target to turn on multilib support for the other
70# libraries as desired.
71
72# We have to handle being invoked by both Cygnus configure and Autoconf.
73#
74# Cygnus configure incoming variables:
75# srcdir, subdir, target, arguments
76#
77# Autoconf incoming variables:
78# srcdir, target, ac_configure_args
79#
80# We *could* figure srcdir and target out, but we'd have to do work that
81# our caller has already done to figure them out and requiring these two
82# seems reasonable.
83
84if [ -n "${ac_configure_args}" ]; then
85  Makefile=${ac_file-Makefile}
86  ml_config_shell=${CONFIG_SHELL-/bin/sh}
87  ml_arguments="${ac_configure_args}"
88  ml_realsrcdir=${srcdir}
89else
90  Makefile=${Makefile-Makefile}
91  ml_config_shell=${config_shell-/bin/sh}
92  ml_arguments="${arguments}"
93  if [ -n "${subdir}" -a "${subdir}" != "." ] ; then
94    ml_realsrcdir=${srcdir}/${subdir}
95  else
96    ml_realsrcdir=${srcdir}
97  fi
98fi
99
100# Scan all the arguments and set all the ones we need.
101
102ml_verbose=--verbose
103for option in ${ml_arguments}
104do
105  case $option in
106  --*) ;;
107  -*) option=-$option ;;
108  esac
109
110  case $option in
111  --*=*)
112	optarg=`echo $option | sed -e 's/^[^=]*=//'`
113	;;
114  esac
115
116  case $option in
117  --disable-*)
118	enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
119	eval $enableopt=no
120	;;
121  --enable-*)
122	case "$option" in
123	*=*)	;;
124	*)	optarg=yes ;;
125	esac
126	enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
127	eval $enableopt="$optarg"
128	;;
129  --norecursion | --no*)
130	ml_norecursion=yes
131	;;
132  --silent | --sil* | --quiet | --q*)
133	ml_verbose=--silent
134	;;
135  --verbose | --v | --verb*)
136	ml_verbose=--verbose
137	;;
138  --with-*)
139	case "$option" in
140	*=*)	;;
141	*)	optarg=yes ;;
142	esac
143	withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
144	eval $withopt="$optarg"
145	;;
146  --without-*)
147	withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
148	eval $withopt=no
149	;;
150  esac
151done
152
153# Only do this if --enable-multilib.
154if [ "${enable_multilib}" = yes ]; then
155
156# Compute whether this is the library's top level directory
157# (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).
158# ${with_multisubdir} tells us we're in the right branch, but we could be
159# in a subdir of that.
160# ??? The previous version could void this test by separating the process into
161# two files: one that only the library's toplevel configure.in ran (to
162# configure the multilib subdirs), and another that all configure.in's ran to
163# update the Makefile.  It seemed reasonable to collapse all multilib support
164# into one file, but it does leave us with having to perform this test.
165ml_toplevel_p=no
166if [ -z "${with_multisubdir}" ]; then
167  if [ "${srcdir}" = "." ]; then
168    # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
169    # ${with_target_subdir} = "." for native, otherwise target alias.
170    if [ "${with_target_subdir}" = "." ]; then
171      if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
172	ml_toplevel_p=yes
173      fi
174    else
175      if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
176	ml_toplevel_p=yes
177      fi
178    fi
179  else
180    # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
181    if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
182      ml_toplevel_p=yes
183    fi
184  fi
185fi
186
187# If this is the library's top level directory, set multidirs to the
188# multilib subdirs to support.  This lives at the top because we need
189# `multidirs' set right away.
190
191if [ "${ml_toplevel_p}" = yes ]; then
192
193multidirs=
194for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
195  dir=`echo $i | sed -e 's/;.*$//'`
196  if [ "${dir}" = "." ]; then
197    true
198  else
199    if [ -z "${multidirs}" ]; then
200      multidirs="${dir}"
201    else
202      multidirs="${multidirs} ${dir}"
203    fi
204  fi
205done
206
207case "${target}" in
208arc-*-elf*)
209	if [ x$enable_biendian != xyes ]
210	then
211	  old_multidirs=${multidirs}
212	  multidirs=""
213	  for x in ${old_multidirs}; do
214	    case "${x}" in
215	      *be*) : ;;
216	      *) multidirs="${multidirs} ${x}" ;;
217	    esac
218	  done
219	fi
220	;;
221m68*-*-*)
222	if [ x$enable_softfloat = xno ]
223	then
224	  old_multidirs="${multidirs}"
225	  multidirs=""
226	  for x in ${old_multidirs}; do
227	    case "$x" in
228	      *soft-float* ) : ;;
229	      *) multidirs="${multidirs} ${x}" ;;
230	    esac
231	  done
232	fi
233	if [ x$enable_m68881 = xno ]
234	then
235	  old_multidirs="${multidirs}"
236	  multidirs=""
237	  for x in ${old_multidirs}; do
238	    case "$x" in
239	      *m68881* ) : ;;
240	      *) multidirs="${multidirs} ${x}" ;;
241	    esac
242	  done
243	fi
244	if [ x$enable_m68000 = xno ]
245	then
246	  old_multidirs="${multidirs}"
247	  multidirs=""
248	  for x in ${old_multidirs}; do
249	    case "$x" in
250	      *m68000* ) : ;;
251	      *) multidirs="${multidirs} ${x}" ;;
252	    esac
253	  done
254	fi
255	if [ x$enable_m68020 = xno ]
256	then
257	  old_multidirs="${multidirs}"
258	  multidirs=""
259	  for x in ${old_multidirs}; do
260	    case "$x" in
261	      *m68020* ) : ;;
262	      *) multidirs="${multidirs} ${x}" ;;
263	    esac
264	  done
265	fi
266	;;
267mips*-*-*)
268	if [ x$enable_single_float = xno ]
269	then
270	  old_multidirs="${multidirs}"
271	  multidirs=""
272	  for x in ${old_multidirs}; do
273	    case "$x" in
274	      *single* ) : ;;
275	      *) multidirs="${multidirs} ${x}" ;;
276	    esac
277	  done
278	fi
279	if [ x$enable_biendian = xno ]
280	then
281	  old_multidirs="${multidirs}"
282	  multidirs=""
283	  for x in ${old_multidirs}; do
284	    case "$x" in
285	      *el* ) : ;;
286	      *eb* ) : ;;
287	      *) multidirs="${multidirs} ${x}" ;;
288	    esac
289	  done
290	fi
291	if [ x$enable_softfloat = xno ]
292	then
293	  old_multidirs="${multidirs}"
294	  multidirs=""
295	  for x in ${old_multidirs}; do
296	    case "$x" in
297	      *soft-float* ) : ;;
298	      *) multidirs="${multidirs} ${x}" ;;
299	    esac
300	  done
301	fi
302	case " $multidirs " in
303	*" mabi=64 "*)
304	  # We will not be able to create libraries with -mabi=64 if
305	  # we cannot even link a trivial program.  It usually
306	  # indicates the 64bit libraries are missing.
307	  if echo 'main() {}' > conftest.c &&
308	     ${CC-gcc} -mabi=64 conftest.c -o conftest; then
309	    :
310	  else
311	    echo Could not link program with -mabi=64, disabling it.
312	    old_multidirs="${multidirs}"
313	    multidirs=""
314	    for x in ${old_multidirs}; do
315	      case "$x" in
316	      *mabi=64* ) : ;;
317	      *) multidirs="${multidirs} ${x}" ;;
318	      esac
319	    done
320	  fi
321	  rm -f conftest.c conftest
322	  ;;
323	esac
324	;;
325powerpc*-*-* | rs6000*-*-*)
326	if [ x$enable_softfloat = xno ]
327	then
328	  old_multidirs="${multidirs}"
329	  multidirs=""
330	  for x in ${old_multidirs}; do
331	    case "$x" in
332	      *soft-float* ) : ;;
333	      *) multidirs="${multidirs} ${x}" ;;
334	    esac
335	  done
336	fi
337	if [ x$enable_powercpu = xno ]
338	then
339	  old_multidirs="${multidirs}"
340	  multidirs=""
341	  for x in ${old_multidirs}; do
342	    case "$x" in
343	      power | */power | */power/* ) : ;;
344	      *) multidirs="${multidirs} ${x}" ;;
345	    esac
346	  done
347	fi
348	if [ x$enable_powerpccpu = xno ]
349	then
350	  old_multidirs="${multidirs}"
351	  multidirs=""
352	  for x in ${old_multidirs}; do
353	    case "$x" in
354	      *powerpc* ) : ;;
355	      *) multidirs="${multidirs} ${x}" ;;
356	    esac
357	  done
358	fi
359	if [ x$enable_powerpcos = xno ]
360	then
361	  old_multidirs="${multidirs}"
362	  multidirs=""
363	  for x in ${old_multidirs}; do
364	    case "$x" in
365	      *mcall-linux* | *mcall-solaris* ) : ;;
366	      *) multidirs="${multidirs} ${x}" ;;
367	    esac
368	  done
369	fi
370	if [ x$enable_biendian = xno ]
371	then
372	  old_multidirs="${multidirs}"
373	  multidirs=""
374	  for x in ${old_multidirs}; do
375	    case "$x" in
376	      *mlittle* | *mbig* ) : ;;
377	      *) multidirs="${multidirs} ${x}" ;;
378	    esac
379	  done
380	fi
381	if [ x$enable_sysv = xno ]
382	then
383	  old_multidirs="${multidirs}"
384	  multidirs=""
385	  for x in ${old_multidirs}; do
386	    case "$x" in
387	      *mcall-sysv* ) : ;;
388	      *) multidirs="${multidirs} ${x}" ;;
389	    esac
390	  done
391	fi
392	if [ x$enable_aix = xno ]
393	then
394	  old_multidirs="${multidirs}"
395	  multidirs=""
396	  for x in ${old_multidirs}; do
397	    case "$x" in
398	      *mcall-aix* ) : ;;
399	      *) multidirs="${multidirs} ${x}" ;;
400	    esac
401	  done
402	fi
403	;;
404esac
405
406# Remove extraneous blanks from multidirs.
407# Tests like `if [ -n "$multidirs" ]' require it.
408multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
409
410# Add code to library's top level makefile to handle building the multilib
411# subdirs.
412
413cat > Multi.tem <<\EOF
414
415# FIXME: There should be an @-sign in front of the `if'.
416# Leave out until this is tested a bit more.
417multi-do:
418	if [ -z "$(MULTIDIRS)" ]; then \
419	  true; \
420	else \
421	  rootpre=`pwd`/; export rootpre; \
422	  srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
423	  lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
424	  compiler="$(CC)"; \
425	  for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
426	    dir=`echo $$i | sed -e 's/;.*$$//'`; \
427	    if [ "$${dir}" = "." ]; then \
428	      true; \
429	    else \
430	      if [ -d ../$${dir}/$${lib} ]; then \
431		flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
432		if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
433				CFLAGS="$(CFLAGS) $${flags}" \
434				CXXFLAGS="$(CXXFLAGS) $${flags}" \
435				LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
436				LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
437				LDFLAGS="$(LDFLAGS) $${flags}" \
438				$(DO)); then \
439		  true; \
440		else \
441		  exit 1; \
442		fi; \
443	      else true; \
444	      fi; \
445	    fi; \
446	  done; \
447	fi
448
449# FIXME: There should be an @-sign in front of the `if'.
450# Leave out until this is tested a bit more.
451multi-clean:
452	if [ -z "$(MULTIDIRS)" ]; then \
453	  true; \
454	else \
455	  lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
456	  for dir in Makefile $(MULTIDIRS); do \
457	    if [ -f ../$${dir}/$${lib}/Makefile ]; then \
458	      if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
459	      then true; \
460	      else exit 1; \
461	      fi; \
462	    else true; \
463	    fi; \
464	  done; \
465	fi
466EOF
467
468cat ${Makefile} Multi.tem > Makefile.tem
469rm -f ${Makefile} Multi.tem
470mv Makefile.tem ${Makefile}
471
472fi # ${ml_toplevel_p} = yes
473
474if [ "${ml_verbose}" = --verbose ]; then
475  echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
476  if [ "${ml_toplevel_p}" = yes ]; then
477    echo "multidirs=${multidirs}"
478  fi
479  echo "with_multisubdir=${with_multisubdir}"
480fi
481
482if [ "${srcdir}" = "." ]; then
483  if [ "${with_target_subdir}" != "." ]; then
484    ml_srcdotdot="../"
485  else
486    ml_srcdotdot=""
487  fi
488else
489  ml_srcdotdot=""
490fi
491
492if [ -z "${with_multisubdir}" ]; then
493  ml_subdir=
494  ml_builddotdot=
495  : # ml_srcdotdot= # already set
496else
497  ml_subdir="/${with_multisubdir}"
498  # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
499  ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
500  if [ "$srcdir" = "." ]; then
501    ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
502  else
503    : # ml_srcdotdot= # already set
504  fi
505fi
506
507if [ "${ml_toplevel_p}" = yes ]; then
508  ml_do='$(MAKE)'
509  ml_clean='$(MAKE)'
510else
511  ml_do=true
512  ml_clean=true
513fi
514
515# TOP is used by newlib and should not be used elsewhere for this purpose.
516# MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
517# when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
518# FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
519# delete TOP.  Newlib may wish to continue to use TOP for its own purposes
520# of course.
521# MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
522# and lists the subdirectories to recurse into.
523# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
524# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
525# a leading '/'.
526# MULTIDO is used for targets like all, install, and check where
527# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
528# MULTICLEAN is used for the *clean targets.
529#
530# ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
531# currently kept separate because we don't want the *clean targets to require
532# the existence of the compiler (which MULTIDO currently requires) and
533# therefore we'd have to record the directory options as well as names
534# (currently we just record the names and use --print-multi-lib to get the
535# options).
536
537sed -e "s:^TOP[ 	]*=[ 	]*\([./]*\)[ 	]*$:TOP = ${ml_builddotdot}\1:" \
538    -e "s:^MULTISRCTOP[ 	]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
539    -e "s:^MULTIBUILDTOP[ 	]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
540    -e "s:^MULTIDIRS[ 	]*=.*$:MULTIDIRS = ${multidirs}:" \
541    -e "s:^MULTISUBDIR[ 	]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
542    -e "s:^MULTIDO[ 	]*=.*$:MULTIDO = $ml_do:" \
543    -e "s:^MULTICLEAN[ 	]*=.*$:MULTICLEAN = $ml_clean:" \
544	${Makefile} > Makefile.tem
545rm -f ${Makefile}
546mv Makefile.tem ${Makefile}
547
548# If this is the library's top level, configure each multilib subdir.
549# This is done at the end because this is the loop that runs configure
550# in each multilib subdir and it seemed reasonable to finish updating the
551# Makefile before going on to configure the subdirs.
552
553if [ "${ml_toplevel_p}" = yes ]; then
554
555# We must freshly configure each subdirectory.  This bit of code is
556# actually partially stolen from the main configure script.  FIXME.
557
558if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
559
560  if [ "${ml_verbose}" = --verbose ]; then
561    echo "Running configure in multilib subdirs ${multidirs}"
562    echo "pwd: `pwd`"
563  fi
564
565  ml_origdir=`pwd`
566  ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
567  # cd to top-level-build-dir/${with_target_subdir}
568  cd ..
569
570  for ml_dir in ${multidirs}; do
571
572    if [ "${ml_verbose}" = --verbose ]; then
573      echo "Running configure in multilib subdir ${ml_dir}"
574      echo "pwd: `pwd`"
575    fi
576
577    if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
578    if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
579
580    # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
581    dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
582
583    case ${srcdir} in
584    ".")
585      echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
586      if [ "${with_target_subdir}" != "." ]; then
587	ml_unsubdir="../"
588      else
589	ml_unsubdir=""
590      fi
591      (cd ${ml_dir}/${ml_libdir};
592       ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
593      if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
594	if [ x"${MAKE}" = x ]; then
595	  (cd ${ml_dir}/${ml_libdir}; make distclean)
596	else
597	  (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
598	fi
599      fi
600      ml_newsrcdir="."
601      ml_srcdiroption=
602      multisrctop=${dotdot}
603      ;;
604    *)
605      case "${srcdir}" in
606      /*) # absolute path
607        ml_newsrcdir=${srcdir}
608        ;;
609      *) # otherwise relative
610        ml_newsrcdir=${dotdot}${srcdir}
611        ;;
612      esac
613      ml_srcdiroption="-srcdir=${ml_newsrcdir}"
614      multisrctop=
615      ;;
616    esac
617
618    case "${progname}" in
619    /*)     ml_recprog=${progname} ;;
620    *)      ml_recprog=${dotdot}${progname} ;;
621    esac
622
623    # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
624    ML_POPDIR=`pwd`
625    cd ${ml_dir}/${ml_libdir}
626
627    if [ -f ${ml_newsrcdir}/configure ]; then
628      ml_recprog=${ml_newsrcdir}/configure
629    fi
630    if eval ${ml_config_shell} ${ml_recprog} \
631	--with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
632	${ml_arguments} ${ml_srcdiroption} ; then
633      true
634    else
635      exit 1
636    fi
637
638    cd ${ML_POPDIR}
639
640  done
641
642  cd ${ml_origdir}
643fi
644
645fi # ${ml_toplevel_p} = yes
646fi # ${enable_multilib} = yes
647