1: # Configure fragment invoked in the post-target section for subdirs
    2: # wanting multilib support.
    3: #
    4: # Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
    5: #   Free Software Foundation, Inc.
    6: #
    7: # This file is free software; you can redistribute it and/or modify
    8: # it under the terms of the GNU General Public License as published by
    9: # the Free Software Foundation; either version 2 of the License, or
   10: # (at your option) any later version.
   11: #
   12: # This program is distributed in the hope that it will be useful,
   13: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15: # GNU General Public License for more details.
   16: #
   17: # You should have received a copy of the GNU General Public License
   18: # along with this program; if not, write to the Free Software
   19: # Foundation, Inc., 51 Franklin Street, Fifth Floor,
   20: # Boston, MA 02110-1301, USA.
   21: #
   22: # As a special exception to the GNU General Public License, if you
   23: # distribute this file as part of a program that contains a
   24: # configuration script generated by Autoconf, you may include it under
   25: # the same distribution terms that you use for the rest of that program.
   26: #
   27: # Please report bugs to <gcc-bugs@gnu.org>
   28: # and send patches to <gcc-patches@gnu.org>.
   29: 
   30: # It is advisable to support a few --enable/--disable options to let the
   31: # user select which libraries s/he really wants.
   32: #
   33: # Subdirectories wishing to use multilib should put the following lines
   34: # in the "post-target" section of configure.in.
   35: #
   36: # if [ "${srcdir}" = "." ] ; then
   37: #   if [ "${with_target_subdir}" != "." ] ; then
   38: #     . ${with_multisrctop}../../config-ml.in
   39: #   else
   40: #     . ${with_multisrctop}../config-ml.in
   41: #   fi
   42: # else
   43: #   . ${srcdir}/../config-ml.in
   44: # fi
   45: #
   46: #
   47: # Things are complicated because 6 separate cases must be handled:
   48: # 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
   49: #
   50: # srcdir=. is special.  It must handle make programs that don't handle VPATH.
   51: # To implement this, a symlink tree is built for each library and for each
   52: # multilib subdir.
   53: #
   54: # The build tree is layed out as
   55: #
   56: # ./
   57: #   newlib
   58: #   m68020/
   59: #          newlib
   60: #          m68881/
   61: #                 newlib
   62: #
   63: # The nice feature about this arrangement is that inter-library references
   64: # in the build tree work without having to care where you are.  Note that
   65: # inter-library references also work in the source tree because symlink trees
   66: # are built when srcdir=.
   67: #
   68: # Unfortunately, trying to access the libraries in the build tree requires
   69: # the user to manually choose which library to use as GCC won't be able to
   70: # find the right one.  This is viewed as the lesser of two evils.
   71: #
   72: # Configure variables:
   73: # ${with_target_subdir} = "." for native, or ${target_alias} for cross.
   74: # Set by top level Makefile.
   75: # ${with_multisrctop} = how many levels of multilibs there are in the source
   76: # tree.  It exists to handle the case of configuring in the source tree:
   77: # ${srcdir} is not constant.
   78: # ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
   79: #
   80: # Makefile variables:
   81: # MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
   82: # (FIXME: note that this is different than ${with_multisrctop}.  Check out.).
   83: # MULTIBUILDTOP = number of multilib levels in build tree
   84: # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
   85: # (only defined in each library's main Makefile).
   86: # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
   87: # (only defined in each multilib subdir).
   88: 
   89: # FIXME: Multilib is currently disabled by default for everything other than
   90: # newlib.  It is up to each target to turn on multilib support for the other
   91: # libraries as desired.
   92: 
   93: # Autoconf incoming variables:
   94: # srcdir, host, ac_configure_args
   95: #
   96: # We *could* figure srcdir and host out, but we'd have to do work that
   97: # our caller has already done to figure them out and requiring these two
   98: # seems reasonable.
   99: # Note that `host' in this case is GCC's `target'.  Target libraries are
  100: # configured for a particular host.
  101: 
  102: Makefile=${ac_file-Makefile}
  103: ml_config_shell=${CONFIG_SHELL-/bin/sh}
  104: ml_realsrcdir=${srcdir}
  105: 
  106: # Scan all the arguments and set all the ones we need.
  107: 
  108: ml_verbose=--verbose
  109: for option in ${ac_configure_args}
  110: do
  111:   case $option in
  112:   --*) ;;
  113:   -*) option=-$option ;;
  114:   esac
  115: 
  116:   case $option in
  117:   --*=*)
  118:         optarg=`echo $option | sed -e 's/^[^=]*=//'`
  119:         ;;
  120:   esac
  121: 
  122:   case $option in
  123:   --disable-*)
  124:         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
  125:         eval $enableopt=no
  126:         ;;
  127:   --enable-*)
  128:         case "$option" in
  129:         *=*)   ;;
  130:         *)     optarg=yes ;;
  131:         esac
  132:         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
  133:         eval $enableopt="$optarg"
  134:         ;;
  135:   --norecursion | --no-recursion)
  136:         ml_norecursion=yes
  137:         ;;
  138:   --silent | --sil* | --quiet | --q*)
  139:         ml_verbose=--silent
  140:         ;;
  141:   --verbose | --v | --verb*)
  142:         ml_verbose=--verbose
  143:         ;;
  144:   --with-*)
  145:         case "$option" in
  146:         *=*)   ;;
  147:         *)     optarg=yes ;;
  148:         esac
  149:         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
  150:         eval $withopt="$optarg"
  151:         ;;
  152:   --without-*)
  153:         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
  154:         eval $withopt=no
  155:         ;;
  156:   esac
  157: done
  158: 
  159: # Only do this if --enable-multilib.
  160: if [ "${enable_multilib}" = yes ]; then
  161: 
  162: # Compute whether this is the library's top level directory
  163: # (ie: not a multilib subdirectory, and not a subdirectory like newlib/src).
  164: # ${with_multisubdir} tells us we're in the right branch, but we could be
  165: # in a subdir of that.
  166: # ??? The previous version could void this test by separating the process into
  167: # two files: one that only the library's toplevel configure.in ran (to
  168: # configure the multilib subdirs), and another that all configure.in's ran to
  169: # update the Makefile.  It seemed reasonable to collapse all multilib support
  170: # into one file, but it does leave us with having to perform this test.
  171: ml_toplevel_p=no
  172: if [ -z "${with_multisubdir}" ]; then
  173:   if [ "${srcdir}" = "." ]; then
  174:     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
  175:     # ${with_target_subdir} = "." for native, otherwise target alias.
  176:     if [ "${with_target_subdir}" = "." ]; then
  177:       if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
  178:         ml_toplevel_p=yes
  179:       fi
  180:     else
  181:       if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
  182:         ml_toplevel_p=yes
  183:       fi
  184:     fi
  185:   else
  186:     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
  187:     if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
  188:       ml_toplevel_p=yes
  189:     fi
  190:   fi
  191: fi
  192: 
  193: # If this is the library's top level directory, set multidirs to the
  194: # multilib subdirs to support.  This lives at the top because we need
  195: # `multidirs' set right away.
  196: 
  197: if [ "${ml_toplevel_p}" = yes ]; then
  198: 
  199: multidirs=
  200: for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
  201:   dir=`echo $i | sed -e 's/;.*$//'`
  202:   if [ "${dir}" = "." ]; then
  203:     true
  204:   else
  205:     if [ -z "${multidirs}" ]; then
  206:       multidirs="${dir}"
  207:     else
  208:       multidirs="${multidirs} ${dir}"
  209:     fi
  210:   fi
  211: done
  212: 
  213: # Target libraries are configured for the host they run on, so we check
  214: # $host here, not $target.
  215: 
  216: case "${host}" in
  217: arc-*-elf*)
  218:         if [ x$enable_biendian != xyes ]
  219:         then
  220:           old_multidirs=${multidirs}
  221:           multidirs=""
  222:           for x in ${old_multidirs}; do
  223:             case "${x}" in
  224:               *be*) : ;;
  225:               *) multidirs="${multidirs} ${x}" ;;
  226:             esac
  227:           done
  228:         fi
  229:         ;;
  230: arm-*-*)
  231:         if [ x"$enable_fpu" = xno ]
  232:         then
  233:           old_multidirs=${multidirs}
  234:           multidirs=""
  235:           for x in ${old_multidirs}; do
  236:             case "${x}" in
  237:               *fpu*) : ;;
  238:               *) multidirs="${multidirs} ${x}" ;;
  239:             esac
  240:           done
  241:         fi
  242:         if [ x"$enable_26bit" = xno ]
  243:         then
  244:           old_multidirs=${multidirs}
  245:           multidirs=""
  246:           for x in ${old_multidirs}; do
  247:             case "${x}" in
  248:               *26bit*) : ;;
  249:               *) multidirs="${multidirs} ${x}" ;;
  250:             esac
  251:           done
  252:         fi
  253:         if [ x"$enable_underscore" = xno ]
  254:         then
  255:           old_multidirs=${multidirs}
  256:           multidirs=""
  257:           for x in ${old_multidirs}; do
  258:             case "${x}" in
  259:               *under*) : ;;
  260:               *) multidirs="${multidirs} ${x}" ;;
  261:             esac
  262:           done
  263:         fi
  264:         if [ x"$enable_interwork" = xno ]
  265:         then
  266:           old_multidirs=${multidirs}
  267:           multidirs=""
  268:           for x in ${old_multidirs}; do
  269:             case "${x}" in
  270:               *interwork*) : ;;
  271:               *) multidirs="${multidirs} ${x}" ;;
  272:             esac
  273:           done
  274:         fi
  275:         if [ x$enable_biendian = xno ]
  276:         then
  277:           old_multidirs="${multidirs}"
  278:           multidirs=""
  279:           for x in ${old_multidirs}; do
  280:             case "$x" in
  281:               *le* ) : ;;
  282:               *be* ) : ;;
  283:               *) multidirs="${multidirs} ${x}" ;;
  284:             esac
  285:           done
  286:         fi
  287:         if [ x"$enable_nofmult" = xno ]
  288:         then
  289:           old_multidirs="${multidirs}"
  290:           multidirs=""
  291:           for x in ${old_multidirs}; do
  292:             case "$x" in
  293:               *nofmult* ) : ;;
  294:               *) multidirs="${multidirs} ${x}" ;;
  295:             esac
  296:           done
  297:         fi
  298:         ;;
  299: m68*-*-*)
  300:         if [ x$enable_softfloat = xno ]
  301:         then
  302:           old_multidirs="${multidirs}"
  303:           multidirs=""
  304:           for x in ${old_multidirs}; do
  305:             case "$x" in
  306:               *soft-float* ) : ;;
  307:               *) multidirs="${multidirs} ${x}" ;;
  308:             esac
  309:           done
  310:         fi
  311:         if [ x$enable_m68881 = xno ]
  312:         then
  313:           old_multidirs="${multidirs}"
  314:           multidirs=""
  315:           for x in ${old_multidirs}; do
  316:             case "$x" in
  317:               *m68881* ) : ;;
  318:               *) multidirs="${multidirs} ${x}" ;;
  319:             esac
  320:           done
  321:         fi
  322:         if [ x$enable_m68000 = xno ]
  323:         then
  324:           old_multidirs="${multidirs}"
  325:           multidirs=""
  326:           for x in ${old_multidirs}; do
  327:             case "$x" in
  328:               *m68000* ) : ;;
  329:               *) multidirs="${multidirs} ${x}" ;;
  330:             esac
  331:           done
  332:         fi
  333:         if [ x$enable_m68020 = xno ]
  334:         then
  335:           old_multidirs="${multidirs}"
  336:           multidirs=""
  337:           for x in ${old_multidirs}; do
  338:             case "$x" in
  339:               *m68020* ) : ;;
  340:               *) multidirs="${multidirs} ${x}" ;;
  341:             esac
  342:           done
  343:         fi
  344:         ;;
  345: mips*-*-*)
  346:         if [ x$enable_single_float = xno ]
  347:         then
  348:           old_multidirs="${multidirs}"
  349:           multidirs=""
  350:           for x in ${old_multidirs}; do
  351:             case "$x" in
  352:               *single* ) : ;;
  353:               *) multidirs="${multidirs} ${x}" ;;
  354:             esac
  355:           done
  356:         fi
  357:         if [ x$enable_biendian = xno ]
  358:         then
  359:           old_multidirs="${multidirs}"
  360:           multidirs=""
  361:           for x in ${old_multidirs}; do
  362:             case "$x" in
  363:               *el* ) : ;;
  364:               *eb* ) : ;;
  365:               *) multidirs="${multidirs} ${x}" ;;
  366:             esac
  367:           done
  368:         fi
  369:         if [ x$enable_softfloat = xno ]
  370:         then
  371:           old_multidirs="${multidirs}"
  372:           multidirs=""
  373:           for x in ${old_multidirs}; do
  374:             case "$x" in
  375:               *soft-float* ) : ;;
  376:               *) multidirs="${multidirs} ${x}" ;;
  377:             esac
  378:           done
  379:         fi
  380:         case " $multidirs " in
  381:         *" mabi=64 "*)
  382:           # We will not be able to create libraries with -mabi=64 if
  383:           # we cannot even link a trivial program.  It usually
  384:           # indicates the 64bit libraries are missing.
  385:           if echo 'main() {}' > conftest.c &&
  386:              ${CC-gcc} -mabi=64 conftest.c -o conftest; then
  387:             :
  388:           else
  389:             echo Could not link program with -mabi=64, disabling it.
  390:             old_multidirs="${multidirs}"
  391:             multidirs=""
  392:             for x in ${old_multidirs}; do
  393:               case "$x" in
  394:               *mabi=64* ) : ;;
  395:               *) multidirs="${multidirs} ${x}" ;;
  396:               esac
  397:             done
  398:           fi
  399:           rm -f conftest.c conftest
  400:           ;;
  401:         esac
  402:         ;;
  403: powerpc*-*-* | rs6000*-*-*)
  404:         if [ x$enable_aix64 = xno ]
  405:         then
  406:           old_multidirs="${multidirs}"
  407:           multidirs=""
  408:           for x in ${old_multidirs}; do
  409:             case "$x" in
  410:               *ppc64* ) : ;;
  411:               *) multidirs="${multidirs} ${x}" ;;
  412:             esac
  413:           done
  414:         fi
  415:         if [ x$enable_pthread = xno ]
  416:         then
  417:           old_multidirs="${multidirs}"
  418:           multidirs=""
  419:           for x in ${old_multidirs}; do
  420:             case "$x" in
  421:               *pthread* ) : ;;
  422:               *) multidirs="${multidirs} ${x}" ;;
  423:             esac
  424:           done
  425:         fi
  426:         if [ x$enable_softfloat = xno ]
  427:         then
  428:           old_multidirs="${multidirs}"
  429:           multidirs=""
  430:           for x in ${old_multidirs}; do
  431:             case "$x" in
  432:               *soft-float* ) : ;;
  433:               *) multidirs="${multidirs} ${x}" ;;
  434:             esac
  435:           done
  436:         fi
  437:         if [ x$enable_powercpu = xno ]
  438:         then
  439:           old_multidirs="${multidirs}"
  440:           multidirs=""
  441:           for x in ${old_multidirs}; do
  442:             case "$x" in
  443:               power | */power | */power/* ) : ;;
  444:               *) multidirs="${multidirs} ${x}" ;;
  445:             esac
  446:           done
  447:         fi
  448:         if [ x$enable_powerpccpu = xno ]
  449:         then
  450:           old_multidirs="${multidirs}"
  451:           multidirs=""
  452:           for x in ${old_multidirs}; do
  453:             case "$x" in
  454:               *powerpc* ) : ;;
  455:               *) multidirs="${multidirs} ${x}" ;;
  456:             esac
  457:           done
  458:         fi
  459:         if [ x$enable_powerpcos = xno ]
  460:         then
  461:           old_multidirs="${multidirs}"
  462:           multidirs=""
  463:           for x in ${old_multidirs}; do
  464:             case "$x" in
  465:               *mcall-linux* | *mcall-solaris* ) : ;;
  466:               *) multidirs="${multidirs} ${x}" ;;
  467:             esac
  468:           done
  469:         fi
  470:         if [ x$enable_biendian = xno ]
  471:         then
  472:           old_multidirs="${multidirs}"
  473:           multidirs=""
  474:           for x in ${old_multidirs}; do
  475:             case "$x" in
  476:               *mlittle* | *mbig* ) : ;;
  477:               *) multidirs="${multidirs} ${x}" ;;
  478:             esac
  479:           done
  480:         fi
  481:         if [ x$enable_sysv = xno ]
  482:         then
  483:           old_multidirs="${multidirs}"
  484:           multidirs=""
  485:           for x in ${old_multidirs}; do
  486:             case "$x" in
  487:               *mcall-sysv* ) : ;;
  488:               *) multidirs="${multidirs} ${x}" ;;
  489:             esac
  490:           done
  491:         fi
  492:         ;;
  493: sparc*-*-*)
  494:         case " $multidirs " in
  495:         *" m64 "*)
  496:           # We will not be able to create libraries with -m64 if
  497:           # we cannot even link a trivial program.  It usually
  498:           # indicates the 64bit libraries are missing.
  499:           if echo 'main() {}' > conftest.c &&
  500:              ${CC-gcc} -m64 conftest.c -o conftest; then
  501:             :
  502:           else
  503:             echo Could not link program with -m64, disabling it.
  504:             old_multidirs="${multidirs}"
  505:             multidirs=""
  506:             for x in ${old_multidirs}; do
  507:               case "$x" in
  508:               *m64* ) : ;;
  509:               *) multidirs="${multidirs} ${x}" ;;
  510:               esac
  511:             done
  512:           fi
  513:           rm -f conftest.c conftest
  514:           ;;
  515:         esac
  516:         ;;
  517: esac
  518: 
  519: # Remove extraneous blanks from multidirs.
  520: # Tests like `if [ -n "$multidirs" ]' require it.
  521: multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
  522: 
  523: # Add code to library's top level makefile to handle building the multilib
  524: # subdirs.
  525: 
  526: cat > Multi.tem <<\EOF
  527: 
  528: PWD_COMMAND=$${PWDCMD-pwd}
  529: 
  530: # FIXME: There should be an @-sign in front of the `if'.
  531: # Leave out until this is tested a bit more.
  532: multi-do:
  533:         if [ -z "$(MULTIDIRS)" ]; then \
  534:           true; \
  535:         else \
  536:           rootpre=`${PWD_COMMAND}`/; export rootpre; \
  537:           srcrootpre=`cd $(srcdir); ${PWD_COMMAND}`/; export srcrootpre; \
  538:           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
  539:           compiler="$(CC)"; \
  540:           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
  541:             dir=`echo $$i | sed -e 's/;.*$$//'`; \
  542:             if [ "$${dir}" = "." ]; then \
  543:               true; \
  544:             else \
  545:               if [ -d ../$${dir}/$${lib} ]; then \
  546:                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
  547:                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
  548:                                 CFLAGS="$(CFLAGS) $${flags}" \
  549:                                 CCASFLAGS="$(CCASFLAGS) $${flags}" \
  550:                                 FCFLAGS="$(FCFLAGS) $${flags}" \
  551:                                 FFLAGS="$(FFLAGS) $${flags}" \
  552:                                 ADAFLAGS="$(ADAFLAGS) $${flags}" \
  553:                                 prefix="$(prefix)" \
  554:                                 exec_prefix="$(exec_prefix)" \
  555:                                 GCJFLAGS="$(GCJFLAGS) $${flags}" \
  556:                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
  557:                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
  558:                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
  559:                                 LDFLAGS="$(LDFLAGS) $${flags}" \
  560:                                 MULTIFLAGS="$${flags}" \
  561:                                 DESTDIR="$(DESTDIR)" \
  562:                                 INSTALL="$(INSTALL)" \
  563:                                 INSTALL_DATA="$(INSTALL_DATA)" \
  564:                                 INSTALL_PROGRAM="$(INSTALL_PROGRAM)" \
  565:                                 INSTALL_SCRIPT="$(INSTALL_SCRIPT)" \
  566:                                 $(DO)); then \
  567:                   true; \
  568:                 else \
  569:                   exit 1; \
  570:                 fi; \
  571:               else true; \
  572:               fi; \
  573:             fi; \
  574:           done; \
  575:         fi
  576: 
  577: # FIXME: There should be an @-sign in front of the `if'.
  578: # Leave out until this is tested a bit more.
  579: multi-clean:
  580:         if [ -z "$(MULTIDIRS)" ]; then \
  581:           true; \
  582:         else \
  583:           lib=`${PWD_COMMAND} | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
  584:           for dir in Makefile $(MULTIDIRS); do \
  585:             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
  586:               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
  587:               then true; \
  588:               else exit 1; \
  589:               fi; \
  590:             else true; \
  591:             fi; \
  592:           done; \
  593:         fi
  594: EOF
  595: 
  596: cat ${Makefile} Multi.tem > Makefile.tem
  597: rm -f ${Makefile} Multi.tem
  598: mv Makefile.tem ${Makefile}
  599: 
  600: fi # ${ml_toplevel_p} = yes
  601: 
  602: if [ "${ml_verbose}" = --verbose ]; then
  603:   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
  604:   if [ "${ml_toplevel_p}" = yes ]; then
  605:     echo "multidirs=${multidirs}"
  606:   fi
  607:   echo "with_multisubdir=${with_multisubdir}"
  608: fi
  609: 
  610: if [ "${srcdir}" = "." ]; then
  611:   if [ "${with_target_subdir}" != "." ]; then
  612:     ml_srcdotdot="../"
  613:   else
  614:     ml_srcdotdot=""
  615:   fi
  616: else
  617:   ml_srcdotdot=""
  618: fi
  619: 
  620: if [ -z "${with_multisubdir}" ]; then
  621:   ml_subdir=
  622:   ml_builddotdot=
  623:   : # ml_srcdotdot= # already set
  624: else
  625:   ml_subdir="/${with_multisubdir}"
  626:   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
  627:   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
  628:   if [ "$srcdir" = "." ]; then
  629:     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
  630:   else
  631:     : # ml_srcdotdot= # already set
  632:   fi
  633: fi
  634: 
  635: if [ "${ml_toplevel_p}" = yes ]; then
  636:   ml_do='$(MAKE)'
  637:   ml_clean='$(MAKE)'
  638: else
  639:   ml_do=true
  640:   ml_clean=true
  641: fi
  642: 
  643: # TOP is used by newlib and should not be used elsewhere for this purpose.
  644: # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
  645: # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
  646: # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
  647: # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
  648: # of course.
  649: # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
  650: # and lists the subdirectories to recurse into.
  651: # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
  652: # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
  653: # a leading '/'.
  654: # MULTIDO is used for targets like all, install, and check where
  655: # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
  656: # MULTICLEAN is used for the *clean targets.
  657: #
  658: # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
  659: # currently kept separate because we don't want the *clean targets to require
  660: # the existence of the compiler (which MULTIDO currently requires) and
  661: # therefore we'd have to record the directory options as well as names
  662: # (currently we just record the names and use --print-multi-lib to get the
  663: # options).
  664: 
  665: sed -e "s:^TOP[         ]*=[   ]*\([./]*\)[     ]*$:TOP = ${ml_builddotdot}\1:" \
  666:     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
  667:     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
  668:     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
  669:     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
  670:     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
  671:     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
  672:         ${Makefile} > Makefile.tem
  673: rm -f ${Makefile}
  674: mv Makefile.tem ${Makefile}
  675: 
  676: # If this is the library's top level, configure each multilib subdir.
  677: # This is done at the end because this is the loop that runs configure
  678: # in each multilib subdir and it seemed reasonable to finish updating the
  679: # Makefile before going on to configure the subdirs.
  680: 
  681: if [ "${ml_toplevel_p}" = yes ]; then
  682: 
  683: # We must freshly configure each subdirectory.  This bit of code is
  684: # actually partially stolen from the main configure script.  FIXME.
  685: 
  686: if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
  687: 
  688:   if [ "${ml_verbose}" = --verbose ]; then
  689:     echo "Running configure in multilib subdirs ${multidirs}"
  690:     echo "pwd: `${PWDCMD-pwd}`"
  691:   fi
  692: 
  693:   ml_origdir=`${PWDCMD-pwd}`
  694:   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
  695:   # cd to top-level-build-dir/${with_target_subdir}
  696:   cd ..
  697: 
  698:   for ml_dir in ${multidirs}; do
  699: 
  700:     if [ "${ml_verbose}" = --verbose ]; then
  701:       echo "Running configure in multilib subdir ${ml_dir}"
  702:       echo "pwd: `${PWDCMD-pwd}`"
  703:     fi
  704: 
  705:     if [ -d ${ml_dir} ]; then true; else
  706:       # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
  707:       pathcomp=""
  708:       for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
  709:         pathcomp="$pathcomp$d"
  710:         case "$pathcomp" in
  711:           -* ) pathcomp=./$pathcomp ;;
  712:         esac
  713:         if test ! -d "$pathcomp"; then
  714:            echo "mkdir $pathcomp" 1>&2
  715:            mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
  716:         fi
  717:         if test ! -d "$pathcomp"; then
  718:            exit $lasterr
  719:         fi
  720:         pathcomp="$pathcomp/"
  721:       done
  722:     fi
  723:     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
  724: 
  725:     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
  726:     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
  727: 
  728:     case ${srcdir} in
  729:     ".")
  730:       echo Building symlink tree in `${PWDCMD-pwd}`/${ml_dir}/${ml_libdir}
  731:       if [ "${with_target_subdir}" != "." ]; then
  732:         ml_unsubdir="../"
  733:       else
  734:         ml_unsubdir=""
  735:       fi
  736:       (cd ${ml_dir}/${ml_libdir};
  737:        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
  738:       if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
  739:         if [ x"${MAKE}" = x ]; then
  740:           (cd ${ml_dir}/${ml_libdir}; make distclean)
  741:         else
  742:           (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
  743:         fi
  744:       fi
  745:       ml_newsrcdir="."
  746:       ml_srcdiroption=
  747:       multisrctop=${dotdot}
  748:       ;;
  749:     *)
  750:       case "${srcdir}" in
  751:       /* | [A-Za-z]:[\\/]* ) # absolute path
  752:         ml_newsrcdir=${srcdir}
  753:         ;;
  754:       *) # otherwise relative
  755:         ml_newsrcdir=${dotdot}${srcdir}
  756:         ;;
  757:       esac
  758:       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
  759:       multisrctop=
  760:       ;;
  761:     esac
  762: 
  763:     case "${progname}" in
  764:     /* | [A-Za-z]:[\\/]* )     ml_recprog=${progname} ;;
  765:     *)      ml_recprog=${dotdot}${progname} ;;
  766:     esac
  767: 
  768:     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
  769:     ML_POPDIR=`${PWDCMD-pwd}`
  770:     cd ${ml_dir}/${ml_libdir}
  771: 
  772:     if [ -f ${ml_newsrcdir}/configure ]; then
  773:       ml_recprog="${ml_newsrcdir}/configure"
  774:     fi
  775: 
  776:     # find compiler flag corresponding to ${ml_dir}
  777:     for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
  778:       dir=`echo $i | sed -e 's/;.*$//'`
  779:       if [ "${dir}" = "${ml_dir}" ]; then
  780:         flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
  781:         break
  782:       fi
  783:     done
  784:     ml_config_env='CC="${CC_}$flags" CXX="${CXX_}$flags" F77="${F77_}$flags" GCJ="${GCJ_}$flags" GFORTRAN="${GFORTRAN_}$flags"'
  785: 
  786:     if [ "${with_target_subdir}" = "." ]; then
  787:         CC_=$CC' '
  788:         CXX_=$CXX' '
  789:         F77_=$F77' '
  790:         GCJ_=$GCJ' '
  791:         GFORTRAN_=$GFORTRAN' '
  792:     else
  793:         # Create a regular expression that matches any string as long
  794:         # as ML_POPDIR.
  795:         popdir_rx=`echo ${ML_POPDIR} | sed 's,.,.,g'`
  796:         CC_=
  797:         for arg in ${CC}; do
  798:           case $arg in
  799:           -[BIL]"${ML_POPDIR}"/*)
  800:             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\1/p"`' ' ;;
  801:           "${ML_POPDIR}"/*)
  802:             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
  803:           *)
  804:             CC_="${CC_}${arg} " ;;
  805:           esac
  806:         done
  807: 
  808:         CXX_=
  809:         for arg in ${CXX}; do
  810:           case $arg in
  811:           -[BIL]"${ML_POPDIR}"/*)
  812:             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
  813:           "${ML_POPDIR}"/*)
  814:             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
  815:           *)