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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 ${with_multisrctop}. Check out.).
62 # MULTIBUILDTOP = number of multilib levels in build tree
63 # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
64 # (only defined in each library's main Makefile).
65 # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
66 # (only defined in each multilib subdir).
67
68 # FIXME: Multilib is currently disabled by default for everything other than
69 # newlib. It is up to each target to turn on multilib support for the other
70 # libraries as desired.
71
72 # We have to handle being invoked by both Cygnus configure and Autoconf.
73 #
74 # Cygnus configure incoming variables:
75 # srcdir, subdir, target, arguments
76 #
77 # Autoconf incoming variables:
78 # srcdir, target, ac_configure_args
79 #
80 # We *could* figure srcdir and target out, but we'd have to do work that
81 # our caller has already done to figure them out and requiring these two
82 # seems reasonable.
83
84 if [ -n "${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}
89 else
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
98 fi
99
100 # Scan all the arguments and set all the ones we need.
101
102 ml_verbose=--verbose
103 for option in ${ml_arguments}
104 do
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 $withopt=no
149 ;;
150 esac
151 done
152
153 # Only do this if --enable-multilib.
154 if [ "${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 # ${with_multisubdir} tells us we're in the right branch, but we could be
159 # in a subdir of that.
160 # ??? The previous version could void this test by separating the process into
161 # two files: one that only the library's toplevel configure.in ran (to
162 # configure the multilib subdirs), and another that all configure.in's ran to
163 # update the Makefile. It seemed reasonable to collapse all multilib support
164 # into one file, but it does leave us with having to perform this test.
165 ml_toplevel_p=no
166 if [ -z "${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 ${ml_realsrcdir}/../config-ml.in ]; then
182 ml_toplevel_p=yes
183 fi
184 fi
185 fi
186
187 # If this is the library's top level directory, set multidirs to the
188 # multilib subdirs to support. This lives at the top because we need
189 # `multidirs' set right away.
190
191 if [ "${ml_toplevel_p}" = yes ]; then
192
193 multidirs=
194 for 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} ${dir}"
203 fi
204 fi
205 done
206
207 case "${target}" in
208 arc-*-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} ${x}" ;;
217 esac
218 done
219 fi
220 ;;
221 m68*-*-*)
222 if [ x$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} ${x}" ;;
263 esac
264 done
265 fi
266 ;;
267 mips*-*-*)
268 if [ x$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} ${x}" ;;
318 esac
319 done
320 fi
321 rm -f conftest.c conftest
322 ;;
323 esac
324 ;;
325 powerpc*-*-* | rs6000*-*-*)
326 if [ x$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} ${x}" ;;
400 esac
401 done
402 fi
403 ;;
404 esac
405
406 # Remove extraneous blanks from multidirs.
407 # Tests like `if [ -n "$multidirs" ]' require it.
408 multidirs=`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
413 cat > 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.
417 multi-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 $(DO)); then \
439 true; \
440 else \
441 exit 1; \
442 fi; \
443 else true; \
444 fi; \
445 fi; \
446 done; \
447 fi
448
449 # FIXME: There should be an @-sign in front of the `if'.
450 # Leave out until this is tested a bit more.
451 multi-clean:
452 if [ -z "$(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
466 EOF
467
468 cat ${Makefile} Multi.tem > Makefile.tem
469 rm -f ${Makefile} Multi.tem
470 mv Makefile.tem ${Makefile}
471
472 fi # ${ml_toplevel_p} = yes
473
474 if [ "${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}"
480 fi
481
482 if [ "${srcdir}" = "." ]; then
483 if [ "${with_target_subdir}" != "." ]; then
484 ml_srcdotdot="../"
485 else
486 ml_srcdotdot=""
487 fi
488 else
489 ml_srcdotdot=""
490 fi
491
492 if [ -z "${with_multisubdir}" ]; then
493 ml_subdir=
494 ml_builddotdot=
495 : # ml_srcdotdot= # already set
496 else
497 ml_subdir="/${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
505 fi
506
507 if [ "${ml_toplevel_p}" = yes ]; then
508 ml_do='$(MAKE)'
509 ml_clean='$(MAKE)'
510 else
511 ml_do=true
512 ml_clean=true
513 fi
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
537 sed -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
545 rm -f ${Makefile}
546 mv Makefile.tem ${Makefile}
547
548 # If this is the library's top level, configure each multilib subdir.
549 # This is done at the end because this is the loop that runs configure
550 # in each multilib subdir and it seemed reasonable to finish updating the
551 # Makefile before going on to configure the subdirs.
552
553 if [ "${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
558 if [ -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}
643 fi
644
645 fi # ${ml_toplevel_p} = yes
646 fi # ${enable_multilib} = yes
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