1 # Configure fragment invoked in the post-target section for subdirs
2 # wanting multilib support.
4 # It is advisable to support a few --enable/--disable options to let the
5 # user select which libraries s/he really wants.
7 # Subdirectories wishing to use multilib should put the following lines
8 # in the "post-target" section of configure.in.
10 # if [ "${srcdir}" = "." ] ; then
11 # if [ "${with_target_subdir}" != "." ] ; then
12 # . ${with_multisrctop}../../config-ml.in
14 # . ${with_multisrctop}../config-ml.in
17 # . ${srcdir}/../config-ml.in
20 # See librx/configure.in in the libg++ distribution for an example of how
21 # to handle autoconf'd libraries.
23 # Things are complicated because 6 separate cases must be handled:
24 # 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
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
30 # The build tree is layed out as
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=.
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.
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).
60 # MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
61 # (FIXME: note that this is different than ${with_multisrctop}. Check out.).
62 # MULTIBUILDTOP = number of multilib levels in build tree
63 # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
64 # (only defined in each library's main Makefile).
65 # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
66 # (only defined in each multilib subdir).
68 # FIXME: Multilib is currently disabled by default for everything other than
69 # newlib. It is up to each target to turn on multilib support for the other
70 # libraries as desired.
72 # We have to handle being invoked by both Cygnus configure and Autoconf.
74 # Cygnus configure incoming variables:
75 # srcdir, subdir, target, arguments
77 # Autoconf incoming variables:
78 # srcdir, target, ac_configure_args
80 # We *could* figure srcdir and target out, but we'd have to do work that
81 # our caller has already done to figure them out and requiring these two
84 if [ -n "${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}
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}/${subdir}
96 ml_realsrcdir=${srcdir}
100 # Scan all the arguments and set all the ones we need.
103 for option in ${ml_arguments}
107 -*) option=-$option ;;
112 optarg=`echo $option | sed -e 's/^[^=]*=//'`
118 enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
126 enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
127 eval $enableopt="$optarg"
129 --norecursion | --no*)
132 --silent | --sil* | --quiet | --q*)
135 --verbose | --v | --verb*)
143 withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
144 eval $withopt="$optarg"
147 withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
153 # Only do this if --enable-multilib.
154 if [ "${enable_multilib}" = yes ]; then
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 # ${with_multisubdir} tells us we're in the right branch, but we could be
159 # in a subdir of that.
160 # ??? The previous version could void this test by separating the process into
161 # two files: one that only the library's toplevel configure.in ran (to
162 # configure the multilib subdirs), and another that all configure.in's ran to
163 # update the Makefile. It seemed reasonable to collapse all multilib support
164 # into one file, but it does leave us with having to perform this test.
166 if [ -z "${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
175 if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
180 # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
181 if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
187 # If this is the library's top level directory, set multidirs to the
188 # multilib subdirs to support. This lives at the top because we need
189 # `multidirs' set right away.
191 if [ "${ml_toplevel_p}" = yes ]; then
194 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
195 dir=`echo $i | sed -e 's/;.*$//'`
196 if [ "${dir}" = "." ]; then
199 if [ -z "${multidirs}" ]; then
202 multidirs="${multidirs} ${dir}"
209 if [ x$enable_biendian != xyes ]
211 old_multidirs=${multidirs}
213 for x in ${old_multidirs}; do
216 *) multidirs="${multidirs} ${x}" ;;
222 if [ x"$enable_fpu" = xno ]
224 old_multidirs=${multidirs}
226 for x in ${old_multidirs}; do
229 *) multidirs="${multidirs} ${x}" ;;
233 if [ x"$enable_26bit" = xno ]
235 old_multidirs=${multidirs}
237 for x in ${old_multidirs}; do
240 *) multidirs="${multidirs} ${x}" ;;
244 if [ x"$enable_underscore" = xno ]
246 old_multidirs=${multidirs}
248 for x in ${old_multidirs}; do
251 *) multidirs="${multidirs} ${x}" ;;
255 if [ x"$enable_interwork" = xno ]
257 old_multidirs=${multidirs}
259 for x in ${old_multidirs}; do
262 *) multidirs="${multidirs} ${x}" ;;
266 if [ x$enable_biendian = xno ]
268 old_multidirs="${multidirs}"
270 for x in ${old_multidirs}; do
274 *) multidirs="${multidirs} ${x}" ;;
278 if [ x"$enable_nofmult" = xno ]
280 old_multidirs="${multidirs}"
282 for x in ${old_multidirs}; do
285 *) multidirs="${multidirs} ${x}" ;;
291 if [ x$enable_softfloat = xno ]
293 old_multidirs="${multidirs}"
295 for x in ${old_multidirs}; do
298 *) multidirs="${multidirs} ${x}" ;;
302 if [ x$enable_m68881 = xno ]
304 old_multidirs="${multidirs}"
306 for x in ${old_multidirs}; do
309 *) multidirs="${multidirs} ${x}" ;;
313 if [ x$enable_m68000 = xno ]
315 old_multidirs="${multidirs}"
317 for x in ${old_multidirs}; do
320 *) multidirs="${multidirs} ${x}" ;;
324 if [ x$enable_m68020 = xno ]
326 old_multidirs="${multidirs}"
328 for x in ${old_multidirs}; do
331 *) multidirs="${multidirs} ${x}" ;;
337 if [ x$enable_single_float = xno ]
339 old_multidirs="${multidirs}"
341 for x in ${old_multidirs}; do
344 *) multidirs="${multidirs} ${x}" ;;
348 if [ x$enable_biendian = xno ]
350 old_multidirs="${multidirs}"
352 for x in ${old_multidirs}; do
356 *) multidirs="${multidirs} ${x}" ;;
360 if [ x$enable_softfloat = xno ]
362 old_multidirs="${multidirs}"
364 for x in ${old_multidirs}; do
367 *) multidirs="${multidirs} ${x}" ;;
371 case " $multidirs " in
373 # We will not be able to create libraries with -mabi=64 if
374 # we cannot even link a trivial program. It usually
375 # indicates the 64bit libraries are missing.
376 if echo 'main() {}' > conftest.c &&
377 ${CC-gcc} -mabi=64 conftest.c -o conftest; then
380 echo Could not link program with -mabi=64, disabling it.
381 old_multidirs="${multidirs}"
383 for x in ${old_multidirs}; do
386 *) multidirs="${multidirs} ${x}" ;;
390 rm -f conftest.c conftest
394 powerpc*-*-* | rs6000*-*-*)
395 if [ x$enable_softfloat = xno ]
397 old_multidirs="${multidirs}"
399 for x in ${old_multidirs}; do
402 *) multidirs="${multidirs} ${x}" ;;
406 if [ x$enable_powercpu = xno ]
408 old_multidirs="${multidirs}"
410 for x in ${old_multidirs}; do
412 power | */power | */power/* ) : ;;
413 *) multidirs="${multidirs} ${x}" ;;
417 if [ x$enable_powerpccpu = xno ]
419 old_multidirs="${multidirs}"
421 for x in ${old_multidirs}; do
424 *) multidirs="${multidirs} ${x}" ;;
428 if [ x$enable_powerpcos = xno ]
430 old_multidirs="${multidirs}"
432 for x in ${old_multidirs}; do
434 *mcall-linux* | *mcall-solaris* ) : ;;
435 *) multidirs="${multidirs} ${x}" ;;
439 if [ x$enable_biendian = xno ]
441 old_multidirs="${multidirs}"
443 for x in ${old_multidirs}; do
445 *mlittle* | *mbig* ) : ;;
446 *) multidirs="${multidirs} ${x}" ;;
450 if [ x$enable_sysv = xno ]
452 old_multidirs="${multidirs}"
454 for x in ${old_multidirs}; do
457 *) multidirs="${multidirs} ${x}" ;;
461 if [ x$enable_aix = xno ]
463 old_multidirs="${multidirs}"
465 for x in ${old_multidirs}; do
468 *) multidirs="${multidirs} ${x}" ;;
475 # Remove extraneous blanks from multidirs.
476 # Tests like `if [ -n "$multidirs" ]' require it.
477 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
479 # Add code to library's top level makefile to handle building the multilib
482 cat > Multi.tem <<\EOF
484 # FIXME: There should be an @-sign in front of the `if'.
485 # Leave out until this is tested a bit more.
487 if [ -z "$(MULTIDIRS)" ]; then \
490 rootpre=`pwd`/; export rootpre; \
491 srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
492 lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
494 for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
495 dir=`echo $$i | sed -e 's/;.*$$//'`; \
496 if [ "$${dir}" = "." ]; then \
499 if [ -d ../$${dir}/$${lib} ]; then \
500 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
501 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
502 CFLAGS="$(CFLAGS) $${flags}" \
503 CXXFLAGS="$(CXXFLAGS) $${flags}" \
504 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
505 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
506 LDFLAGS="$(LDFLAGS) $${flags}" \
518 # FIXME: There should be an @-sign in front of the `if'.
519 # Leave out until this is tested a bit more.
521 if [ -z "$(MULTIDIRS)" ]; then \
524 lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
525 for dir in Makefile $(MULTIDIRS); do \
526 if [ -f ../$${dir}/$${lib}/Makefile ]; then \
527 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
537 cat ${Makefile} Multi.tem > Makefile.tem
538 rm -f ${Makefile} Multi.tem
539 mv Makefile.tem ${Makefile}
541 fi # ${ml_toplevel_p} = yes
543 if [ "${ml_verbose}" = --verbose ]; then
544 echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
545 if [ "${ml_toplevel_p}" = yes ]; then
546 echo "multidirs=${multidirs}"
548 echo "with_multisubdir=${with_multisubdir}"
551 if [ "${srcdir}" = "." ]; then
552 if [ "${with_target_subdir}" != "." ]; then
561 if [ -z "${with_multisubdir}" ]; then
564 : # ml_srcdotdot= # already set
566 ml_subdir="/${with_multisubdir}"
567 # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
568 ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
569 if [ "$srcdir" = "." ]; then
570 ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
572 : # ml_srcdotdot= # already set
576 if [ "${ml_toplevel_p}" = yes ]; then
584 # TOP is used by newlib and should not be used elsewhere for this purpose.
585 # MULTI{SRC,BUILD}TOP are the proper ones to use. MULTISRCTOP is empty
586 # when srcdir != builddir. MULTIBUILDTOP is always some number of ../'s.
587 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
588 # delete TOP. Newlib may wish to continue to use TOP for its own purposes
590 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
591 # and lists the subdirectories to recurse into.
592 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
593 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
595 # MULTIDO is used for targets like all, install, and check where
596 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
597 # MULTICLEAN is used for the *clean targets.
599 # ??? It is possible to merge MULTIDO and MULTICLEAN into one. They are
600 # currently kept separate because we don't want the *clean targets to require
601 # the existence of the compiler (which MULTIDO currently requires) and
602 # therefore we'd have to record the directory options as well as names
603 # (currently we just record the names and use --print-multi-lib to get the
606 sed -e "s:^TOP[ ]*=[ ]*\([./]*\)[ ]*$:TOP = ${ml_builddotdot}\1:" \
607 -e "s:^MULTISRCTOP[ ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
608 -e "s:^MULTIBUILDTOP[ ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
609 -e "s:^MULTIDIRS[ ]*=.*$:MULTIDIRS = ${multidirs}:" \
610 -e "s:^MULTISUBDIR[ ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
611 -e "s:^MULTIDO[ ]*=.*$:MULTIDO = $ml_do:" \
612 -e "s:^MULTICLEAN[ ]*=.*$:MULTICLEAN = $ml_clean:" \
613 ${Makefile} > Makefile.tem
615 mv Makefile.tem ${Makefile}
617 # If this is the library's top level, configure each multilib subdir.
618 # This is done at the end because this is the loop that runs configure
619 # in each multilib subdir and it seemed reasonable to finish updating the
620 # Makefile before going on to configure the subdirs.
622 if [ "${ml_toplevel_p}" = yes ]; then
624 # We must freshly configure each subdirectory. This bit of code is
625 # actually partially stolen from the main configure script. FIXME.
627 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
629 if [ "${ml_verbose}" = --verbose ]; then
630 echo "Running configure in multilib subdirs ${multidirs}"
635 ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
636 # cd to top-level-build-dir/${with_target_subdir}
639 for ml_dir in ${multidirs}; do
641 if [ "${ml_verbose}" = --verbose ]; then
642 echo "Running configure in multilib subdir ${ml_dir}"
646 if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
647 if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
649 # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
650 dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
654 echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
655 if [ "${with_target_subdir}" != "." ]; then
660 (cd ${ml_dir}/${ml_libdir};
661 ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
662 if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
663 if [ x"${MAKE}" = x ]; then
664 (cd ${ml_dir}/${ml_libdir}; make distclean)
666 (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
671 multisrctop=${dotdot}
676 ml_newsrcdir=${srcdir}
678 *) # otherwise relative
679 ml_newsrcdir=${dotdot}${srcdir}
682 ml_srcdiroption="-srcdir=${ml_newsrcdir}"
687 case "${progname}" in
688 /*) ml_recprog=${progname} ;;
689 *) ml_recprog=${dotdot}${progname} ;;
692 # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
694 cd ${ml_dir}/${ml_libdir}
696 if [ -f ${ml_newsrcdir}/configure ]; then
697 ml_recprog=${ml_newsrcdir}/configure
700 # find compiler flag corresponding to ${ml_dir}
701 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
702 dir=`echo $i | sed -e 's/;.*$//'`
703 if [ "${dir}" = "${ml_dir}" ]; then
704 flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
708 ml_config_env='CC="${CC} $flags"'
710 if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
711 --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
712 ${ml_arguments} ${ml_srcdiroption} ; then
725 fi # ${ml_toplevel_p} = yes
726 fi # ${enable_multilib} = yes