config-ml.in

   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   # strip single quotes surrounding individual options
 112   case $option in
 113   \'*\') eval option=$option ;;
 114   esac
 115
 116   case $option in
 117   --*) ;;
 118   -*) option=-$option ;;
 119   esac
 120
 121   case $option in
 122   --*=*)
 123         optarg=`echo $option | sed -e 's/^[^=]*=//'`
 124         ;;
 125   esac
 126
 127   case $option in
 128   --disable-*)
 129         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
 130         eval $enableopt=no
 131         ;;
 132   --enable-*)
 133         case "$option" in
 134         *=*)    ;;
 135         *)      optarg=yes ;;
 136         esac
 137         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 138         eval $enableopt="$optarg"
 139         ;;
 140   --norecursion | --no-recursion)
 141         ml_norecursion=yes
 142         ;;
 143   --silent | --sil* | --quiet | --q*)
 144         ml_verbose=--silent
 145         ;;
 146   --verbose | --v | --verb*)
 147         ml_verbose=--verbose
 148         ;;
 149   --with-*)
 150         case "$option" in
 151         *=*)    ;;
 152         *)      optarg=yes ;;
 153         esac
 154         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 155         eval $withopt="$optarg"
 156         ;;
 157   --without-*)
 158         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 159         eval $withopt=no
 160         ;;
 161   esac
 162 done
 163
 164 # Only do this if --enable-multilib.
 165 if [ "${enable_multilib}" = yes ]; then
 166
 167 # Compute whether this is the library's top level directory
 168 # (ie: not a multilib subdirectory, and not a subdirectory like newlib/src).
 169 # ${with_multisubdir} tells us we're in the right branch, but we could be
 170 # in a subdir of that.
 171 # ??? The previous version could void this test by separating the process into
 172 # two files: one that only the library's toplevel configure.in ran (to
 173 # configure the multilib subdirs), and another that all configure.in's ran to
 174 # update the Makefile.  It seemed reasonable to collapse all multilib support
 175 # into one file, but it does leave us with having to perform this test.
 176 ml_toplevel_p=no
 177 if [ -z "${with_multisubdir}" ]; then
 178   if [ "${srcdir}" = "." ]; then
 179     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 180     # ${with_target_subdir} = "." for native, otherwise target alias.
 181     if [ "${with_target_subdir}" = "." ]; then
 182       if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 183         ml_toplevel_p=yes
 184       fi
 185     else
 186       if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
 187         ml_toplevel_p=yes
 188       fi
 189     fi
 190   else
 191     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 192     if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 193       ml_toplevel_p=yes
 194     fi
 195   fi
 196 fi
 197
 198 # If this is the library's top level directory, set multidirs to the
 199 # multilib subdirs to support.  This lives at the top because we need
 200 # `multidirs' set right away.
 201
 202 if [ "${ml_toplevel_p}" = yes ]; then
 203
 204 multidirs=
 205 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 206   dir=`echo $i | sed -e 's/;.*$//'`
 207   if [ "${dir}" = "." ]; then
 208     true
 209   else
 210     if [ -z "${multidirs}" ]; then
 211       multidirs="${dir}"
 212     else
 213       multidirs="${multidirs} ${dir}"
 214     fi
 215   fi
 216 done
 217
 218 # Target libraries are configured for the host they run on, so we check
 219 # $host here, not $target.
 220
 221 case "${host}" in
 222 arc-*-elf*)
 223         if [ x$enable_biendian != xyes ]
 224         then
 225           old_multidirs=${multidirs}
 226           multidirs=""
 227           for x in ${old_multidirs}; do
 228             case "${x}" in
 229               *be*) : ;;
 230               *) multidirs="${multidirs} ${x}" ;;
 231             esac
 232           done
 233         fi
 234         ;;
 235 arm-*-*)
 236         if [ x"$enable_fpu" = xno ]
 237         then
 238           old_multidirs=${multidirs}
 239           multidirs=""
 240           for x in ${old_multidirs}; do
 241             case "${x}" in
 242               *fpu*) : ;;
 243               *) multidirs="${multidirs} ${x}" ;;
 244             esac
 245           done
 246         fi
 247         if [ x"$enable_26bit" = xno ]
 248         then
 249           old_multidirs=${multidirs}
 250           multidirs=""
 251           for x in ${old_multidirs}; do
 252             case "${x}" in
 253               *26bit*) : ;;
 254               *) multidirs="${multidirs} ${x}" ;;
 255             esac
 256           done
 257         fi
 258         if [ x"$enable_underscore" = xno ]
 259         then
 260           old_multidirs=${multidirs}
 261           multidirs=""
 262           for x in ${old_multidirs}; do
 263             case "${x}" in
 264               *under*) : ;;
 265               *) multidirs="${multidirs} ${x}" ;;
 266             esac
 267           done
 268         fi
 269         if [ x"$enable_interwork" = xno ]
 270         then
 271           old_multidirs=${multidirs}
 272           multidirs=""
 273           for x in ${old_multidirs}; do
 274             case "${x}" in
 275               *interwork*) : ;;
 276               *) multidirs="${multidirs} ${x}" ;;
 277             esac
 278           done
 279         fi
 280         if [ x$enable_biendian = xno ]
 281         then
 282           old_multidirs="${multidirs}"
 283           multidirs=""
 284           for x in ${old_multidirs}; do
 285             case "$x" in
 286               *le* ) : ;;
 287               *be* ) : ;;
 288               *) multidirs="${multidirs} ${x}" ;;
 289             esac
 290           done
 291         fi
 292         if [ x"$enable_nofmult" = xno ]
 293         then
 294           old_multidirs="${multidirs}"
 295           multidirs=""
 296           for x in ${old_multidirs}; do
 297             case "$x" in
 298               *nofmult* ) : ;;
 299               *) multidirs="${multidirs} ${x}" ;;
 300             esac
 301           done
 302         fi
 303         ;;
 304 m68*-*-*)
 305         if [ x$enable_softfloat = xno ]
 306         then
 307           old_multidirs="${multidirs}"
 308           multidirs=""
 309           for x in ${old_multidirs}; do
 310             case "$x" in
 311               *soft-float* ) : ;;
 312               *) multidirs="${multidirs} ${x}" ;;
 313             esac
 314           done
 315         fi
 316         if [ x$enable_m68881 = xno ]
 317         then
 318           old_multidirs="${multidirs}"
 319           multidirs=""
 320           for x in ${old_multidirs}; do
 321             case "$x" in
 322               *m68881* ) : ;;
 323               *) multidirs="${multidirs} ${x}" ;;
 324             esac
 325           done
 326         fi
 327         if [ x$enable_m68000 = xno ]
 328         then
 329           old_multidirs="${multidirs}"
 330           multidirs=""
 331           for x in ${old_multidirs}; do
 332             case "$x" in
 333               *m68000* ) : ;;
 334               *) multidirs="${multidirs} ${x}" ;;
 335             esac
 336           done
 337         fi
 338         if [ x$enable_m68020 = xno ]
 339         then
 340           old_multidirs="${multidirs}"
 341           multidirs=""
 342           for x in ${old_multidirs}; do
 343             case "$x" in
 344               *m68020* ) : ;;
 345               *) multidirs="${multidirs} ${x}" ;;
 346             esac
 347           done
 348         fi
 349         ;;
 350 mips*-*-*)
 351         if [ x$enable_single_float = xno ]
 352         then
 353           old_multidirs="${multidirs}"
 354           multidirs=""
 355           for x in ${old_multidirs}; do
 356             case "$x" in
 357               *single* ) : ;;
 358               *) multidirs="${multidirs} ${x}" ;;
 359             esac
 360           done
 361         fi
 362         if [ x$enable_biendian = xno ]
 363         then
 364           old_multidirs="${multidirs}"
 365           multidirs=""
 366           for x in ${old_multidirs}; do
 367             case "$x" in
 368               *el* ) : ;;
 369               *eb* ) : ;;
 370               *) multidirs="${multidirs} ${x}" ;;
 371             esac
 372           done
 373         fi
 374         if [ x$enable_softfloat = xno ]
 375         then
 376           old_multidirs="${multidirs}"
 377           multidirs=""
 378           for x in ${old_multidirs}; do
 379             case "$x" in
 380               *soft-float* ) : ;;
 381               *) multidirs="${multidirs} ${x}" ;;
 382             esac
 383           done
 384         fi
 385         case " $multidirs " in
 386         *" mabi=64 "*)
 387           # We will not be able to create libraries with -mabi=64 if
 388           # we cannot even link a trivial program.  It usually
 389           # indicates the 64bit libraries are missing.
 390           if echo 'main() {}' > conftest.c &&
 391              ${CC-gcc} -mabi=64 conftest.c -o conftest; then
 392             :
 393           else
 394             echo Could not link program with -mabi=64, disabling it.
 395             old_multidirs="${multidirs}"
 396             multidirs=""
 397             for x in ${old_multidirs}; do
 398               case "$x" in
 399               *mabi=64* ) : ;;
 400               *) multidirs="${multidirs} ${x}" ;;
 401               esac
 402             done
 403           fi
 404           rm -f conftest.c conftest
 405           ;;
 406         esac
 407         ;;
 408 powerpc*-*-* | rs6000*-*-*)
 409         if [ x$enable_aix64 = xno ]
 410         then
 411           old_multidirs="${multidirs}"
 412           multidirs=""
 413           for x in ${old_multidirs}; do
 414             case "$x" in
 415               *ppc64* ) : ;;
 416               *) multidirs="${multidirs} ${x}" ;;
 417             esac
 418           done
 419         fi
 420         if [ x$enable_pthread = xno ]
 421         then
 422           old_multidirs="${multidirs}"
 423           multidirs=""
 424           for x in ${old_multidirs}; do
 425             case "$x" in
 426               *pthread* ) : ;;
 427               *) multidirs="${multidirs} ${x}" ;;
 428             esac
 429           done
 430         fi
 431         if [ x$enable_softfloat = xno ]
 432         then
 433           old_multidirs="${multidirs}"
 434           multidirs=""
 435           for x in ${old_multidirs}; do
 436             case "$x" in
 437               *soft-float* ) : ;;
 438               *) multidirs="${multidirs} ${x}" ;;
 439             esac
 440           done
 441         fi
 442         if [ x$enable_powercpu = xno ]
 443         then
 444           old_multidirs="${multidirs}"
 445           multidirs=""
 446           for x in ${old_multidirs}; do
 447             case "$x" in
 448               power | */power | */power/* ) : ;;
 449               *) multidirs="${multidirs} ${x}" ;;
 450             esac
 451           done
 452         fi
 453         if [ x$enable_powerpccpu = xno ]
 454         then
 455           old_multidirs="${multidirs}"
 456           multidirs=""
 457           for x in ${old_multidirs}; do
 458             case "$x" in
 459               *powerpc* ) : ;;
 460               *) multidirs="${multidirs} ${x}" ;;
 461             esac
 462           done
 463         fi
 464         if [ x$enable_powerpcos = xno ]
 465         then
 466           old_multidirs="${multidirs}"
 467           multidirs=""
 468           for x in ${old_multidirs}; do
 469             case "$x" in
 470               *mcall-linux* | *mcall-solaris* ) : ;;
 471               *) multidirs="${multidirs} ${x}" ;;
 472             esac
 473           done
 474         fi
 475         if [ x$enable_biendian = xno ]
 476         then
 477           old_multidirs="${multidirs}"
 478           multidirs=""
 479           for x in ${old_multidirs}; do
 480             case "$x" in
 481               *mlittle* | *mbig* ) : ;;
 482               *) multidirs="${multidirs} ${x}" ;;
 483             esac
 484           done
 485         fi
 486         if [ x$enable_sysv = xno ]
 487         then
 488           old_multidirs="${multidirs}"
 489           multidirs=""
 490           for x in ${old_multidirs}; do
 491             case "$x" in
 492               *mcall-sysv* ) : ;;
 493               *) multidirs="${multidirs} ${x}" ;;
 494             esac
 495           done
 496         fi
 497         ;;
 498 sparc*-*-*)
 499         case " $multidirs " in
 500         *" m64 "*)
 501           # We will not be able to create libraries with -m64 if
 502           # we cannot even link a trivial program.  It usually
 503           # indicates the 64bit libraries are missing.
 504           if echo 'main() {}' > conftest.c &&
 505              ${CC-gcc} -m64 conftest.c -o conftest; then
 506             :
 507           else
 508             echo Could not link program with -m64, disabling it.
 509             old_multidirs="${multidirs}"
 510             multidirs=""
 511             for x in ${old_multidirs}; do
 512               case "$x" in
 513               *m64* ) : ;;
 514               *) multidirs="${multidirs} ${x}" ;;
 515               esac
 516             done
 517           fi
 518           rm -f conftest.c conftest
 519           ;;
 520         esac
 521         ;;
 522 esac
 523
 524 # Remove extraneous blanks from multidirs.
 525 # Tests like `if [ -n "$multidirs" ]' require it.
 526 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
 527
 528 # Add code to library's top level makefile to handle building the multilib
 529 # subdirs.
 530
 531 cat > Multi.tem <<\EOF
 532
 533 PWD_COMMAND=$${PWDCMD-pwd}
 534
 535 # FIXME: There should be an @-sign in front of the `if'.
 536 # Leave out until this is tested a bit more.
 537 multi-do:
 538         if [ -z "$(MULTIDIRS)" ]; then \
 539           true; \
 540         else \
 541           rootpre=`${PWD_COMMAND}`/; export rootpre; \
 542           srcrootpre=`cd $(srcdir); ${PWD_COMMAND}`/; export srcrootpre; \
 543           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 544           compiler="$(CC)"; \
 545           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 546             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 547             if [ "$${dir}" = "." ]; then \
 548               true; \
 549             else \
 550               if [ -d ../$${dir}/$${lib} ]; then \
 551                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 552                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 553                                 CFLAGS="$(CFLAGS) $${flags}" \
 554                                 CCASFLAGS="$(CCASFLAGS) $${flags}" \
 555                                 FCFLAGS="$(FCFLAGS) $${flags}" \
 556                                 FFLAGS="$(FFLAGS) $${flags}" \
 557                                 ADAFLAGS="$(ADAFLAGS) $${flags}" \
 558                                 prefix="$(prefix)" \
 559                                 exec_prefix="$(exec_prefix)" \
 560                                 GCJFLAGS="$(GCJFLAGS) $${flags}" \
 561                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 562                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 563                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 564                                 LDFLAGS="$(LDFLAGS) $${flags}" \
 565                                 MULTIFLAGS="$${flags}" \
 566                                 DESTDIR="$(DESTDIR)" \
 567                                 INSTALL="$(INSTALL)" \
 568                                 INSTALL_DATA="$(INSTALL_DATA)" \
 569                                 INSTALL_PROGRAM="$(INSTALL_PROGRAM)" \
 570                                 INSTALL_SCRIPT="$(INSTALL_SCRIPT)" \
 571                                 $(DO)); then \
 572                   true; \
 573                 else \
 574                   exit 1; \
 575                 fi; \
 576               else true; \
 577               fi; \
 578             fi; \
 579           done; \
 580         fi
 581
 582 # FIXME: There should be an @-sign in front of the `if'.
 583 # Leave out until this is tested a bit more.
 584 multi-clean:
 585         if [ -z "$(MULTIDIRS)" ]; then \
 586           true; \
 587         else \
 588           lib=`${PWD_COMMAND} | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 589           for dir in Makefile $(MULTIDIRS); do \
 590             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 591               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 592               then true; \
 593               else exit 1; \
 594               fi; \
 595             else true; \
 596             fi; \
 597           done; \
 598         fi
 599 EOF
 600
 601 cat ${Makefile} Multi.tem > Makefile.tem
 602 rm -f ${Makefile} Multi.tem
 603 mv Makefile.tem ${Makefile}
 604
 605 fi # ${ml_toplevel_p} = yes
 606
 607 if [ "${ml_verbose}" = --verbose ]; then
 608   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 609   if [ "${ml_toplevel_p}" = yes ]; then
 610     echo "multidirs=${multidirs}"
 611   fi
 612   echo "with_multisubdir=${with_multisubdir}"
 613 fi
 614
 615 if [ "${srcdir}" = "." ]; then
 616   if [ "${with_target_subdir}" != "." ]; then
 617     ml_srcdotdot="../"
 618   else
 619     ml_srcdotdot=""
 620   fi
 621 else
 622   ml_srcdotdot=""
 623 fi
 624
 625 if [ -z "${with_multisubdir}" ]; then
 626   ml_subdir=
 627   ml_builddotdot=
 628   : # ml_srcdotdot= # already set
 629 else
 630   ml_subdir="/${with_multisubdir}"
 631   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 632   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 633   if [ "$srcdir" = "." ]; then
 634     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 635   else
 636     : # ml_srcdotdot= # already set
 637   fi
 638 fi
 639
 640 if [ "${ml_toplevel_p}" = yes ]; then
 641   ml_do='$(MAKE)'
 642   ml_clean='$(MAKE)'
 643 else
 644   ml_do=true
 645   ml_clean=true
 646 fi
 647
 648 # TOP is used by newlib and should not be used elsewhere for this purpose.
 649 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 650 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 651 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 652 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 653 # of course.
 654 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 655 # and lists the subdirectories to recurse into.
 656 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 657 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 658 # a leading '/'.
 659 # MULTIDO is used for targets like all, install, and check where
 660 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 661 # MULTICLEAN is used for the *clean targets.
 662 #
 663 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 664 # currently kept separate because we don't want the *clean targets to require
 665 # the existence of the compiler (which MULTIDO currently requires) and
 666 # therefore we'd have to record the directory options as well as names
 667 # (currently we just record the names and use --print-multi-lib to get the
 668 # options).
 669
 670 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 671     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 672     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 673     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 674     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 675     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 676     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 677         ${Makefile} > Makefile.tem
 678 rm -f ${Makefile}
 679 mv Makefile.tem ${Makefile}
 680
 681 # If this is the library's top level, configure each multilib subdir.
 682 # This is done at the end because this is the loop that runs configure
 683 # in each multilib subdir and it seemed reasonable to finish updating the
 684 # Makefile before going on to configure the subdirs.
 685
 686 if [ "${ml_toplevel_p}" = yes ]; then
 687
 688 # We must freshly configure each subdirectory.  This bit of code is
 689 # actually partially stolen from the main configure script.  FIXME.
 690
 691 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 692
 693   if [ "${ml_verbose}" = --verbose ]; then
 694     echo "Running configure in multilib subdirs ${multidirs}"
 695     echo "pwd: `${PWDCMD-pwd}`"
 696   fi
 697
 698   ml_origdir=`${PWDCMD-pwd}`
 699   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 700   # cd to top-level-build-dir/${with_target_subdir}
 701   cd ..
 702
 703   for ml_dir in ${multidirs}; do
 704
 705     if [ "${ml_verbose}" = --verbose ]; then
 706       echo "Running configure in multilib subdir ${ml_dir}"
 707       echo "pwd: `${PWDCMD-pwd}`"
 708     fi
 709
 710     if [ -d ${ml_dir} ]; then true; else
 711       # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
 712       pathcomp=""
 713       for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
 714         pathcomp="$pathcomp$d"
 715         case "$pathcomp" in
 716           -* ) pathcomp=./$pathcomp ;;
 717         esac
 718         if test ! -d "$pathcomp"; then
 719            echo "mkdir $pathcomp" 1>&2
 720            mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
 721         fi
 722         if test ! -d "$pathcomp"; then
 723            exit $lasterr
 724         fi
 725         pathcomp="$pathcomp/"
 726       done
 727     fi
 728     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 729
 730     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 731     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 732
 733     case ${srcdir} in
 734     ".")
 735       echo Building symlink tree in `${PWDCMD-pwd}`/${ml_dir}/${ml_libdir}
 736       if [ "${with_target_subdir}" != "." ]; then
 737         ml_unsubdir="../"
 738       else
 739         ml_unsubdir=""
 740       fi
 741       (cd ${ml_dir}/${ml_libdir};
 742        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 743       if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
 744         if [ x"${MAKE}" = x ]; then
 745           (cd ${ml_dir}/${ml_libdir}; make distclean)
 746         else
 747           (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
 748         fi
 749       fi
 750       ml_newsrcdir="."
 751       ml_srcdiroption=
 752       multisrctop=${dotdot}
 753       ;;
 754     *)
 755       case "${srcdir}" in
 756       /* | [A-Za-z]:[\\/]* ) # absolute path
 757         ml_newsrcdir=${srcdir}
 758         ;;
 759       *) # otherwise relative
 760         ml_newsrcdir=${dotdot}${srcdir}
 761         ;;
 762       esac
 763       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 764       multisrctop=
 765       ;;
 766     esac
 767
 768     case "${progname}" in
 769     /* | [A-Za-z]:[\\/]* )     ml_recprog=${progname} ;;
 770     *)      ml_recprog=${dotdot}${progname} ;;
 771     esac
 772
 773     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 774     ML_POPDIR=`${PWDCMD-pwd}`
 775     cd ${ml_dir}/${ml_libdir}
 776
 777     if [ -f ${ml_newsrcdir}/configure ]; then
 778       ml_recprog="${ml_newsrcdir}/configure"
 779     fi
 780
 781     # find compiler flag corresponding to ${ml_dir}
 782     for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 783       dir=`echo $i | sed -e 's/;.*$//'`
 784       if [ "${dir}" = "${ml_dir}" ]; then
 785         flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
 786         break
 787       fi
 788     done
 789     ml_config_env='CC="${CC_}$flags" CXX="${CXX_}$flags" F77="${F77_}$flags" GCJ="${GCJ_}$flags" GFORTRAN="${GFORTRAN_}$flags"'
 790
 791     if [ "${with_target_subdir}" = "." ]; then
 792         CC_=$CC' '
 793         CXX_=$CXX' '
 794         F77_=$F77' '
 795         GCJ_=$GCJ' '
 796         GFORTRAN_=$GFORTRAN' '
 797     else
 798         # Create a regular expression that matches any string as long
 799         # as ML_POPDIR.
 800         popdir_rx=`echo ${ML_POPDIR} | sed 's,.,.,g'`
 801         CC_=
 802         for arg in ${CC}; do
 803           case $arg in
 804           -[BIL]"${ML_POPDIR}"/*)
 805             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"`' ' ;;
 806           "${ML_POPDIR}"/*)
 807             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 808           *)
 809             CC_="${CC_}${arg} " ;;
 810           esac
 811         done
 812
 813         CXX_=
 814         for arg in ${CXX}; do
 815           case $arg in
 816           -[BIL]"${ML_POPDIR}"/*)
 817             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"`' ' ;;
 818           "${ML_POPDIR}"/*)
 819             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 820           *)
 821             CXX_="${CXX_}${arg} " ;;
 822           esac
 823         done
 824
 825         F77_=
 826         for arg in ${F77}; do
 827           case $arg in
 828           -[BIL]"${ML_POPDIR}"/*)
 829             F77_="${F77_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 830           "${ML_POPDIR}"/*)
 831             F77_="${F77_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 832           *)
 833             F77_="${F77_}${arg} " ;;
 834           esac
 835         done
 836
 837         GCJ_=
 838         for arg in ${GCJ}; do
 839           case $arg in
 840           -[BIL]"${ML_POPDIR}"/*)
 841             GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 842           "${ML_POPDIR}"/*)
 843             GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 844           *)
 845             GCJ_="${GCJ_}${arg} " ;;
 846           esac
 847         done
 848
 849         GFORTRAN_=
 850         for arg in ${GFORTRAN}; do
 851           case $arg in
 852           -[BIL]"${ML_POPDIR}"/*)
 853             GFORTRAN_="${GFORTRAN_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 854           "${ML_POPDIR}"/*)
 855             GFORTRAN_="${GFORTRAN_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 856           *)
 857             GFORTRAN_="${GFORTRAN_}${arg} " ;;
 858           esac
 859         done
 860
 861         if test "x${LD_LIBRARY_PATH+set}" = xset; then
 862           LD_LIBRARY_PATH_=
 863           for arg in `echo "$LD_LIBRARY_PATH" | tr ':' ' '`; do
 864             case "$arg" in
 865             "${ML_POPDIR}"/*)
 866               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 867               ;;
 868             esac
 869             if test "x$LD_LIBRARY_PATH_" != x; then
 870               LD_LIBRARY_PATH_=$LD_LIBRARY_PATH_:$arg
 871             else
 872               LD_LIBRARY_PATH_=$arg
 873             fi
 874           done
 875           ml_config_env="$ml_config_env LD_LIBRARY_PATH=$LD_LIBRARY_PATH_"
 876         fi
 877
 878         if test "x${SHLIB_PATH+set}" = xset; then
 879           SHLIB_PATH_=
 880           for arg in `echo "$SHLIB_PATH" | tr ':' ' '`; do
 881             case "$arg" in
 882             "${ML_POPDIR}"/*)
 883               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 884               ;;
 885             esac
 886             if test "x$SHLIB_PATH_" != x; then
 887               SHLIB_PATH_=$SHLIB_PATH_:$arg
 888             else
 889               SHLIB_PATH_=$arg
 890             fi
 891           done
 892           ml_config_env="$ml_config_env SHLIB_PATH=$SHLIB_PATH_"
 893         fi
 894     fi
 895
 896     if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
 897         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 898         ${ac_configure_args} ${ml_config_env} ${ml_srcdiroption} ; then
 899       true
 900     else
 901       exit 1
 902     fi
 903
 904     cd ${ML_POPDIR}
 905
 906   done
 907
 908   cd ${ml_origdir}
 909 fi
 910
 911 fi # ${ml_toplevel_p} = yes
 912 fi # ${enable_multilib} = yes