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 ${with_multisrctop}. Check out.).
62 # MULTIBUILDTOP = number of multilib levels in build tree
63 # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
64 # (only defined in each library's main Makefile).
65 # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
66 # (only defined in each multilib subdir).
68 # FIXME: Multilib is currently disabled by default for everything other than
69 # newlib. It is up to each target to turn on multilib support for the other
70 # libraries as desired.
72 # We have to handle being invoked by both Cygnus configure and Autoconf.
74 # Cygnus configure incoming variables:
75 # srcdir, subdir, host, arguments
77 # Autoconf incoming variables:
78 # srcdir, host, ac_configure_args
80 # We *could* figure srcdir and host out, but we'd have to do work that
81 # our caller has already done to figure them out and requiring these two
83 # Note that `host' in this case is GCC's `target'. Target libraries are
84 # configured for a particular host.
86 if [ -n "${ac_configure_args}" ]; then
87 Makefile=${ac_file-Makefile}
88 ml_config_shell=${CONFIG_SHELL-/bin/sh}
89 ml_arguments="${ac_configure_args}"
90 ml_realsrcdir=${srcdir}
92 Makefile=${Makefile-Makefile}
93 ml_config_shell=${config_shell-/bin/sh}
94 ml_arguments="${arguments}"
95 if [ -n "${subdir}" -a "${subdir}" != "." ] ; then
96 ml_realsrcdir=${srcdir}/${subdir}
98 ml_realsrcdir=${srcdir}
102 # Scan all the arguments and set all the ones we need.
105 for option in ${ml_arguments}
109 -*) option=-$option ;;
114 optarg=`echo $option | sed -e 's/^[^=]*=//'`
120 enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
128 enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
129 eval $enableopt="$optarg"
131 --norecursion | --no*)
134 --silent | --sil* | --quiet | --q*)
137 --verbose | --v | --verb*)
145 withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
146 eval $withopt="$optarg"
149 withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
155 # Only do this if --enable-multilib.
156 if [ "${enable_multilib}" = yes ]; then
158 # Compute whether this is the library's top level directory
159 # (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).
160 # ${with_multisubdir} tells us we're in the right branch, but we could be
161 # in a subdir of that.
162 # ??? The previous version could void this test by separating the process into
163 # two files: one that only the library's toplevel configure.in ran (to
164 # configure the multilib subdirs), and another that all configure.in's ran to
165 # update the Makefile. It seemed reasonable to collapse all multilib support
166 # into one file, but it does leave us with having to perform this test.
168 if [ -z "${with_multisubdir}" ]; then
169 if [ "${srcdir}" = "." ]; then
170 # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
171 # ${with_target_subdir} = "." for native, otherwise target alias.
172 if [ "${with_target_subdir}" = "." ]; then
173 if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
177 if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
182 # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
183 if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
189 # If this is the library's top level directory, set multidirs to the
190 # multilib subdirs to support. This lives at the top because we need
191 # `multidirs' set right away.
193 if [ "${ml_toplevel_p}" = yes ]; then
196 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
197 dir=`echo $i | sed -e 's/;.*$//'`
198 if [ "${dir}" = "." ]; then
201 if [ -z "${multidirs}" ]; then
204 multidirs="${multidirs} ${dir}"
209 # Target libraries are configured for the host they run on, so we check
210 # $host here, not $target.
214 if [ x$enable_biendian != xyes ]
216 old_multidirs=${multidirs}
218 for x in ${old_multidirs}; do
221 *) multidirs="${multidirs} ${x}" ;;
227 if [ x"$enable_fpu" = xno ]
229 old_multidirs=${multidirs}
231 for x in ${old_multidirs}; do
234 *) multidirs="${multidirs} ${x}" ;;
238 if [ x"$enable_26bit" = xno ]
240 old_multidirs=${multidirs}
242 for x in ${old_multidirs}; do
245 *) multidirs="${multidirs} ${x}" ;;
249 if [ x"$enable_underscore" = xno ]
251 old_multidirs=${multidirs}
253 for x in ${old_multidirs}; do
256 *) multidirs="${multidirs} ${x}" ;;
260 if [ x"$enable_interwork" = xno ]
262 old_multidirs=${multidirs}
264 for x in ${old_multidirs}; do
267 *) multidirs="${multidirs} ${x}" ;;
271 if [ x$enable_biendian = xno ]
273 old_multidirs="${multidirs}"
275 for x in ${old_multidirs}; do
279 *) multidirs="${multidirs} ${x}" ;;
283 if [ x"$enable_nofmult" = xno ]
285 old_multidirs="${multidirs}"
287 for x in ${old_multidirs}; do
290 *) multidirs="${multidirs} ${x}" ;;
296 if [ x$enable_softfloat = xno ]
298 old_multidirs="${multidirs}"
300 for x in ${old_multidirs}; do
303 *) multidirs="${multidirs} ${x}" ;;
307 if [ x$enable_m68881 = xno ]
309 old_multidirs="${multidirs}"
311 for x in ${old_multidirs}; do
314 *) multidirs="${multidirs} ${x}" ;;
318 if [ x$enable_m68000 = xno ]
320 old_multidirs="${multidirs}"
322 for x in ${old_multidirs}; do
325 *) multidirs="${multidirs} ${x}" ;;
329 if [ x$enable_m68020 = xno ]
331 old_multidirs="${multidirs}"
333 for x in ${old_multidirs}; do
336 *) multidirs="${multidirs} ${x}" ;;
342 if [ x$enable_single_float = xno ]
344 old_multidirs="${multidirs}"
346 for x in ${old_multidirs}; do
349 *) multidirs="${multidirs} ${x}" ;;
353 if [ x$enable_biendian = xno ]
355 old_multidirs="${multidirs}"
357 for x in ${old_multidirs}; do
361 *) multidirs="${multidirs} ${x}" ;;
365 if [ x$enable_softfloat = xno ]
367 old_multidirs="${multidirs}"
369 for x in ${old_multidirs}; do
372 *) multidirs="${multidirs} ${x}" ;;
376 case " $multidirs " in
378 # We will not be able to create libraries with -mabi=64 if
379 # we cannot even link a trivial program. It usually
380 # indicates the 64bit libraries are missing.
381 if echo 'main() {}' > conftest.c &&
382 ${CC-gcc} -mabi=64 conftest.c -o conftest; then
385 echo Could not link program with -mabi=64, disabling it.
386 old_multidirs="${multidirs}"
388 for x in ${old_multidirs}; do
391 *) multidirs="${multidirs} ${x}" ;;
395 rm -f conftest.c conftest
399 powerpc*-*-* | rs6000*-*-*)
400 if [ x$enable_softfloat = xno ]
402 old_multidirs="${multidirs}"
404 for x in ${old_multidirs}; do
407 *) multidirs="${multidirs} ${x}" ;;
411 if [ x$enable_powercpu = xno ]
413 old_multidirs="${multidirs}"
415 for x in ${old_multidirs}; do
417 power | */power | */power/* ) : ;;
418 *) multidirs="${multidirs} ${x}" ;;
422 if [ x$enable_powerpccpu = xno ]
424 old_multidirs="${multidirs}"
426 for x in ${old_multidirs}; do
429 *) multidirs="${multidirs} ${x}" ;;
433 if [ x$enable_powerpcos = xno ]
435 old_multidirs="${multidirs}"
437 for x in ${old_multidirs}; do
439 *mcall-linux* | *mcall-solaris* ) : ;;
440 *) multidirs="${multidirs} ${x}" ;;
444 if [ x$enable_biendian = xno ]
446 old_multidirs="${multidirs}"
448 for x in ${old_multidirs}; do
450 *mlittle* | *mbig* ) : ;;
451 *) multidirs="${multidirs} ${x}" ;;
455 if [ x$enable_sysv = xno ]
457 old_multidirs="${multidirs}"
459 for x in ${old_multidirs}; do
462 *) multidirs="${multidirs} ${x}" ;;
466 if [ x$enable_aix = xno ]
468 old_multidirs="${multidirs}"
470 for x in ${old_multidirs}; do
473 *) multidirs="${multidirs} ${x}" ;;
479 case " $multidirs " in
481 # We will not be able to create libraries with -m64 if
482 # we cannot even link a trivial program. It usually
483 # indicates the 64bit libraries are missing.
484 if echo 'main() {}' > conftest.c &&
485 ${CC-gcc} -m64 conftest.c -o conftest; then
488 echo Could not link program with -m64, disabling it.
489 old_multidirs="${multidirs}"
491 for x in ${old_multidirs}; do
494 *) multidirs="${multidirs} ${x}" ;;
498 rm -f conftest.c conftest
504 # Remove extraneous blanks from multidirs.
505 # Tests like `if [ -n "$multidirs" ]' require it.
506 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
508 # Add code to library's top level makefile to handle building the multilib
511 cat > Multi.tem <<\EOF
513 # FIXME: There should be an @-sign in front of the `if'.
514 # Leave out until this is tested a bit more.
516 if [ -z "$(MULTIDIRS)" ]; then \
519 rootpre=`pwd`/; export rootpre; \
520 srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
521 lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
523 for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
524 dir=`echo $$i | sed -e 's/;.*$$//'`; \
525 if [ "$${dir}" = "." ]; then \
528 if [ -d ../$${dir}/$${lib} ]; then \
529 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
530 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
531 CFLAGS="$(CFLAGS) $${flags}" \
533 exec_prefix="$(exec_prefix)" \
534 CXXFLAGS="$(CXXFLAGS) $${flags}" \
535 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
536 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
537 LDFLAGS="$(LDFLAGS) $${flags}" \
549 # FIXME: There should be an @-sign in front of the `if'.
550 # Leave out until this is tested a bit more.
552 if [ -z "$(MULTIDIRS)" ]; then \
555 lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
556 for dir in Makefile $(MULTIDIRS); do \
557 if [ -f ../$${dir}/$${lib}/Makefile ]; then \
558 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
568 cat ${Makefile} Multi.tem > Makefile.tem
569 rm -f ${Makefile} Multi.tem
570 mv Makefile.tem ${Makefile}
572 fi # ${ml_toplevel_p} = yes
574 if [ "${ml_verbose}" = --verbose ]; then
575 echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
576 if [ "${ml_toplevel_p}" = yes ]; then
577 echo "multidirs=${multidirs}"
579 echo "with_multisubdir=${with_multisubdir}"
582 if [ "${srcdir}" = "." ]; then
583 if [ "${with_target_subdir}" != "." ]; then
592 if [ -z "${with_multisubdir}" ]; then
595 : # ml_srcdotdot= # already set
597 ml_subdir="/${with_multisubdir}"
598 # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
599 ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
600 if [ "$srcdir" = "." ]; then
601 ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
603 : # ml_srcdotdot= # already set
607 if [ "${ml_toplevel_p}" = yes ]; then
615 # TOP is used by newlib and should not be used elsewhere for this purpose.
616 # MULTI{SRC,BUILD}TOP are the proper ones to use. MULTISRCTOP is empty
617 # when srcdir != builddir. MULTIBUILDTOP is always some number of ../'s.
618 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
619 # delete TOP. Newlib may wish to continue to use TOP for its own purposes
621 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
622 # and lists the subdirectories to recurse into.
623 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
624 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
626 # MULTIDO is used for targets like all, install, and check where
627 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
628 # MULTICLEAN is used for the *clean targets.
630 # ??? It is possible to merge MULTIDO and MULTICLEAN into one. They are
631 # currently kept separate because we don't want the *clean targets to require
632 # the existence of the compiler (which MULTIDO currently requires) and
633 # therefore we'd have to record the directory options as well as names
634 # (currently we just record the names and use --print-multi-lib to get the
637 sed -e "s:^TOP[ ]*=[ ]*\([./]*\)[ ]*$:TOP = ${ml_builddotdot}\1:" \
638 -e "s:^MULTISRCTOP[ ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
639 -e "s:^MULTIBUILDTOP[ ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
640 -e "s:^MULTIDIRS[ ]*=.*$:MULTIDIRS = ${multidirs}:" \
641 -e "s:^MULTISUBDIR[ ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
642 -e "s:^MULTIDO[ ]*=.*$:MULTIDO = $ml_do:" \
643 -e "s:^MULTICLEAN[ ]*=.*$:MULTICLEAN = $ml_clean:" \
644 ${Makefile} > Makefile.tem
646 mv Makefile.tem ${Makefile}
648 # If this is the library's top level, configure each multilib subdir.
649 # This is done at the end because this is the loop that runs configure
650 # in each multilib subdir and it seemed reasonable to finish updating the
651 # Makefile before going on to configure the subdirs.
653 if [ "${ml_toplevel_p}" = yes ]; then
655 # We must freshly configure each subdirectory. This bit of code is
656 # actually partially stolen from the main configure script. FIXME.
658 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
660 if [ "${ml_verbose}" = --verbose ]; then
661 echo "Running configure in multilib subdirs ${multidirs}"
666 ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
667 # cd to top-level-build-dir/${with_target_subdir}
670 for ml_dir in ${multidirs}; do
672 if [ "${ml_verbose}" = --verbose ]; then
673 echo "Running configure in multilib subdir ${ml_dir}"
677 if [ -d ${ml_dir} ]; then true; else
678 # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
680 for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
681 pathcomp="$pathcomp$d"
683 -* ) pathcomp=./$pathcomp ;;
685 if test ! -d "$pathcomp"; then
686 echo "mkdir $pathcomp" 1>&2
687 mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
689 if test ! -d "$pathcomp"; then
692 pathcomp="$pathcomp/"
695 if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
697 # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
698 dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
702 echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
703 if [ "${with_target_subdir}" != "." ]; then
708 (cd ${ml_dir}/${ml_libdir};
709 ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
710 if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
711 if [ x"${MAKE}" = x ]; then
712 (cd ${ml_dir}/${ml_libdir}; make distclean)
714 (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
719 multisrctop=${dotdot}
724 ml_newsrcdir=${srcdir}
726 *) # otherwise relative
727 ml_newsrcdir=${dotdot}${srcdir}
730 ml_srcdiroption="-srcdir=${ml_newsrcdir}"
735 case "${progname}" in
736 /*) ml_recprog=${progname} ;;
737 *) ml_recprog=${dotdot}${progname} ;;
740 # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
742 cd ${ml_dir}/${ml_libdir}
744 if [ -f ${ml_newsrcdir}/configure ]; then
745 ml_recprog="${ml_newsrcdir}/configure --cache-file=../config.cache"
748 # find compiler flag corresponding to ${ml_dir}
749 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
750 dir=`echo $i | sed -e 's/;.*$//'`
751 if [ "${dir}" = "${ml_dir}" ]; then
752 flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
756 ml_config_env='CC="${CC} $flags"'
758 if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
759 --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
760 ${ml_arguments} ${ml_srcdiroption} ; then
773 fi # ${ml_toplevel_p} = yes
774 fi # ${enable_multilib} = yes