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.
102 for option in ${ml_arguments}
106 -*) option=-$option ;;
111 optarg=`echo $option | sed -e 's/^[^=]*=//'`
117 enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
125 enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
126 eval $enableopt="$optarg"
128 --norecursion | --no*)
131 --verbose | --v | --verb*)
139 withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
140 eval $withopt="$optarg"
143 withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
149 # Only do this if --enable-multilib.
150 if [ "${enable_multilib}" = yes ]; then
152 # Compute whether this is the library's top level directory
153 # (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).
154 # ${with_multisubdir} tells us we're in the right branch, but we could be
155 # in a subdir of that.
156 # ??? The previous version could void this test by separating the process into
157 # two files: one that only the library's toplevel configure.in ran (to
158 # configure the multilib subdirs), and another that all configure.in's ran to
159 # update the Makefile. It seemed reasonable to collapse all multilib support
160 # into one file, but it does leave us with having to perform this test.
162 if [ -z "${with_multisubdir}" ]; then
163 if [ "${srcdir}" = "." ]; then
164 # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
165 # ${with_target_subdir} = "." for native, otherwise target alias.
166 if [ "${with_target_subdir}" = "." ]; then
167 if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
171 if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
176 # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
177 if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
183 # If this is the library's top level directory, set multidirs to the
184 # multilib subdirs to support. This lives at the top because we need
185 # `multidirs' set right away.
187 if [ "${ml_toplevel_p}" = yes ]; then
190 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
191 dir=`echo $i | sed -e 's/;.*$//'`
192 if [ "${dir}" = "." ]; then
195 if [ -z "${multidirs}" ]; then
198 multidirs="${multidirs} ${dir}"
205 if [ x$enable_biendian != xyes ]
207 old_multidirs=${multidirs}
209 for x in ${old_multidirs}; do
212 *) multidirs="${multidirs} ${x}" ;;
218 if [ x$enable_softfloat = xno ]
220 old_multidirs="${multidirs}"
222 for x in ${old_multidirs}; do
225 *) multidirs="${multidirs} ${x}" ;;
229 if [ x$enable_m68881 = xno ]
231 old_multidirs="${multidirs}"
233 for x in ${old_multidirs}; do
236 *) multidirs="${multidirs} ${x}" ;;
240 if [ x$enable_m68000 = xno ]
242 old_multidirs="${multidirs}"
244 for x in ${old_multidirs}; do
247 *) multidirs="${multidirs} ${x}" ;;
251 if [ x$enable_m68020 = xno ]
253 old_multidirs="${multidirs}"
255 for x in ${old_multidirs}; do
258 *) multidirs="${multidirs} ${x}" ;;
264 if [ x$enable_single_float = xno ]
266 old_multidirs="${multidirs}"
268 for x in ${old_multidirs}; do
271 *) multidirs="${multidirs} ${x}" ;;
275 if [ x$enable_biendian = xno ]
277 old_multidirs="${multidirs}"
279 for x in ${old_multidirs}; do
283 *) multidirs="${multidirs} ${x}" ;;
287 if [ x$enable_softfloat = xno ]
289 old_multidirs="${multidirs}"
291 for x in ${old_multidirs}; do
294 *) multidirs="${multidirs} ${x}" ;;
299 powerpc*-*-* | rs6000*-*-*)
300 if [ x$enable_softfloat = xno ]
302 old_multidirs="${multidirs}"
304 for x in ${old_multidirs}; do
307 *) multidirs="${multidirs} ${x}" ;;
311 if [ x$enable_powercpu = xno ]
313 old_multidirs="${multidirs}"
315 for x in ${old_multidirs}; do
317 power | */power | */power/* ) : ;;
318 *) multidirs="${multidirs} ${x}" ;;
322 if [ x$enable_powerpccpu = xno ]
324 old_multidirs="${multidirs}"
326 for x in ${old_multidirs}; do
329 *) multidirs="${multidirs} ${x}" ;;
333 if [ x$enable_powerpcos = xno ]
335 old_multidirs="${multidirs}"
337 for x in ${old_multidirs}; do
339 *mcall-linux* | *mcall-solaris* ) : ;;
340 *) multidirs="${multidirs} ${x}" ;;
344 if [ x$enable_biendian = xno ]
346 old_multidirs="${multidirs}"
348 for x in ${old_multidirs}; do
350 *mlittle* | *mbig* ) : ;;
351 *) multidirs="${multidirs} ${x}" ;;
355 if [ x$enable_sysv = xno ]
357 old_multidirs="${multidirs}"
359 for x in ${old_multidirs}; do
362 *) multidirs="${multidirs} ${x}" ;;
366 if [ x$enable_aix = xno ]
368 old_multidirs="${multidirs}"
370 for x in ${old_multidirs}; do
373 *) multidirs="${multidirs} ${x}" ;;
380 # Remove extraneous blanks from multidirs.
381 # Tests like `if [ -n "$multidirs" ]' require it.
382 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
384 # Add code to library's top level makefile to handle building the multilib
387 cat > Multi.tem <<\EOF
389 # FIXME: There should be an @-sign in front of the `if'.
390 # Leave out until this is tested a bit more.
392 if [ -z "$(MULTIDIRS)" ]; then \
395 rootpre=`pwd`/; export rootpre; \
396 srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
397 lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
399 for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
400 dir=`echo $$i | sed -e 's/;.*$$//'`; \
401 if [ "$${dir}" = "." ]; then \
404 if [ -d ../$${dir}/$${lib} ]; then \
405 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
406 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
407 CFLAGS="$(CFLAGS) $${flags}" \
408 CXXFLAGS="$(CXXFLAGS) $${flags}" \
409 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
410 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
422 # FIXME: There should be an @-sign in front of the `if'.
423 # Leave out until this is tested a bit more.
425 if [ -z "$(MULTIDIRS)" ]; then \
428 lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
429 for dir in Makefile $(MULTIDIRS); do \
430 if [ -f ../$${dir}/$${lib}/Makefile ]; then \
431 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
441 cat ${Makefile} Multi.tem > Makefile.tem
442 rm -f ${Makefile} Multi.tem
443 mv Makefile.tem ${Makefile}
445 fi # ${ml_toplevel_p} = yes
447 if [ "${ml_verbose}" = --verbose ]; then
448 echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
449 if [ "${ml_toplevel_p}" = yes ]; then
450 echo "multidirs=${multidirs}"
452 echo "with_multisubdir=${with_multisubdir}"
455 if [ "${srcdir}" = "." ]; then
456 if [ "${with_target_subdir}" != "." ]; then
465 if [ -z "${with_multisubdir}" ]; then
468 : # ml_srcdotdot= # already set
470 ml_subdir="/${with_multisubdir}"
471 # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
472 ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
473 if [ "$srcdir" = "." ]; then
474 ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
476 : # ml_srcdotdot= # already set
480 if [ "${ml_toplevel_p}" = yes ]; then
488 # TOP is used by newlib and should not be used elsewhere for this purpose.
489 # MULTI{SRC,BUILD}TOP are the proper ones to use. MULTISRCTOP is empty
490 # when srcdir != builddir. MULTIBUILDTOP is always some number of ../'s.
491 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
492 # delete TOP. Newlib may wish to continue to use TOP for its own purposes
494 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
495 # and lists the subdirectories to recurse into.
496 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
497 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
499 # MULTIDO is used for targets like all, install, and check where
500 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
501 # MULTICLEAN is used for the *clean targets.
503 # ??? It is possible to merge MULTIDO and MULTICLEAN into one. They are
504 # currently kept separate because we don't want the *clean targets to require
505 # the existence of the compiler (which MULTIDO currently requires) and
506 # therefore we'd have to record the directory options as well as names
507 # (currently we just record the names and use --print-multi-lib to get the
510 sed -e "s:^TOP[ ]*=[ ]*\([./]*\)[ ]*$:TOP = ${ml_builddotdot}\1:" \
511 -e "s:^MULTISRCTOP[ ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
512 -e "s:^MULTIBUILDTOP[ ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
513 -e "s:^MULTIDIRS[ ]*=.*$:MULTIDIRS = ${multidirs}:" \
514 -e "s:^MULTISUBDIR[ ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
515 -e "s:^MULTIDO[ ]*=.*$:MULTIDO = $ml_do:" \
516 -e "s:^MULTICLEAN[ ]*=.*$:MULTICLEAN = $ml_clean:" \
517 ${Makefile} > Makefile.tem
519 mv Makefile.tem ${Makefile}
521 # If this is the library's top level, configure each multilib subdir.
522 # This is done at the end because this is the loop that runs configure
523 # in each multilib subdir and it seemed reasonable to finish updating the
524 # Makefile before going on to configure the subdirs.
526 if [ "${ml_toplevel_p}" = yes ]; then
528 # We must freshly configure each subdirectory. This bit of code is
529 # actually partially stolen from the main configure script. FIXME.
531 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
533 if [ "${ml_verbose}" = --verbose ]; then
534 echo "Running configure in multilib subdirs ${multidirs}"
539 ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
540 # cd to top-level-build-dir/${with_target_subdir}
543 for ml_dir in ${multidirs}; do
545 if [ "${ml_verbose}" = --verbose ]; then
546 echo "Running configure in multilib subdir ${ml_dir}"
550 if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
551 if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
553 # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
554 dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
558 echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
559 if [ "${with_target_subdir}" != "." ]; then
564 (cd ${ml_dir}/${ml_libdir};
565 ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
568 multisrctop=${dotdot}
573 ml_newsrcdir=${srcdir}
575 *) # otherwise relative
576 ml_newsrcdir=${dotdot}${srcdir}
579 ml_srcdiroption="-srcdir=${ml_newsrcdir}"
584 case "${progname}" in
585 /*) ml_recprog=${progname} ;;
586 *) ml_recprog=${dotdot}${progname} ;;
589 # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
591 cd ${ml_dir}/${ml_libdir}
593 if [ -f ${ml_newsrcdir}/configure ]; then
594 ml_recprog=${ml_newsrcdir}/configure
596 if eval ${ml_config_shell} ${ml_recprog} \
597 --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
598 ${ml_arguments} ${ml_srcdiroption} ; then
611 fi # ${ml_toplevel_p} = yes
612 fi # ${enable_multilib} = yes