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   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) $${flags}" \
 549                                 FCFLAGS="$(FCFLAGS) $${flags}" \
 550                                 FFLAGS="$(FFLAGS) $${flags}" \
 551                                 ADAFLAGS="$(ADAFLAGS) $${flags}" \
 552                                 prefix="$(prefix)" \
 553                                 exec_prefix="$(exec_prefix)" \
 554                                 GCJFLAGS="$(GCJFLAGS) $${flags}" \
 555                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 556                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 557                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 558                                 LDFLAGS="$(LDFLAGS) $${flags}" \
 559                                 MULTIFLAGS="$${flags}" \
 560                                 DESTDIR="$(DESTDIR)" \
 561                                 INSTALL="$(INSTALL)" \
 562                                 INSTALL_DATA="$(INSTALL_DATA)" \
 563                                 INSTALL_PROGRAM="$(INSTALL_PROGRAM)" \
 564                                 INSTALL_SCRIPT="$(INSTALL_SCRIPT)" \
 565                                 $(DO)); then \
 566                   true; \
 567                 else \
 568                   exit 1; \
 569                 fi; \
 570               else true; \
 571               fi; \
 572             fi; \
 573           done; \
 574         fi
 575
 576 # FIXME: There should be an @-sign in front of the `if'.
 577 # Leave out until this is tested a bit more.
 578 multi-clean:
 579         if [ -z "$(MULTIDIRS)" ]; then \
 580           true; \
 581         else \
 582           lib=`${PWD_COMMAND} | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 583           for dir in Makefile $(MULTIDIRS); do \
 584             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 585               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 586               then true; \
 587               else exit 1; \
 588               fi; \
 589             else true; \
 590             fi; \
 591           done; \
 592         fi
 593 EOF
 594
 595 cat ${Makefile} Multi.tem > Makefile.tem
 596 rm -f ${Makefile} Multi.tem
 597 mv Makefile.tem ${Makefile}
 598
 599 fi # ${ml_toplevel_p} = yes
 600
 601 if [ "${ml_verbose}" = --verbose ]; then
 602   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 603   if [ "${ml_toplevel_p}" = yes ]; then
 604     echo "multidirs=${multidirs}"
 605   fi
 606   echo "with_multisubdir=${with_multisubdir}"
 607 fi
 608
 609 if [ "${srcdir}" = "." ]; then
 610   if [ "${with_target_subdir}" != "." ]; then
 611     ml_srcdotdot="../"
 612   else
 613     ml_srcdotdot=""
 614   fi
 615 else
 616   ml_srcdotdot=""
 617 fi
 618
 619 if [ -z "${with_multisubdir}" ]; then
 620   ml_subdir=
 621   ml_builddotdot=
 622   : # ml_srcdotdot= # already set
 623 else
 624   ml_subdir="/${with_multisubdir}"
 625   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 626   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 627   if [ "$srcdir" = "." ]; then
 628     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 629   else
 630     : # ml_srcdotdot= # already set
 631   fi
 632 fi
 633
 634 if [ "${ml_toplevel_p}" = yes ]; then
 635   ml_do='$(MAKE)'
 636   ml_clean='$(MAKE)'
 637 else
 638   ml_do=true
 639   ml_clean=true
 640 fi
 641
 642 # TOP is used by newlib and should not be used elsewhere for this purpose.
 643 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 644 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 645 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 646 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 647 # of course.
 648 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 649 # and lists the subdirectories to recurse into.
 650 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 651 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 652 # a leading '/'.
 653 # MULTIDO is used for targets like all, install, and check where
 654 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 655 # MULTICLEAN is used for the *clean targets.
 656 #
 657 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 658 # currently kept separate because we don't want the *clean targets to require
 659 # the existence of the compiler (which MULTIDO currently requires) and
 660 # therefore we'd have to record the directory options as well as names
 661 # (currently we just record the names and use --print-multi-lib to get the
 662 # options).
 663
 664 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 665     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 666     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 667     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 668     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 669     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 670     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 671         ${Makefile} > Makefile.tem
 672 rm -f ${Makefile}
 673 mv Makefile.tem ${Makefile}
 674
 675 # If this is the library's top level, configure each multilib subdir.
 676 # This is done at the end because this is the loop that runs configure
 677 # in each multilib subdir and it seemed reasonable to finish updating the
 678 # Makefile before going on to configure the subdirs.
 679
 680 if [ "${ml_toplevel_p}" = yes ]; then
 681
 682 # We must freshly configure each subdirectory.  This bit of code is
 683 # actually partially stolen from the main configure script.  FIXME.
 684
 685 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 686
 687   if [ "${ml_verbose}" = --verbose ]; then
 688     echo "Running configure in multilib subdirs ${multidirs}"
 689     echo "pwd: `${PWDCMD-pwd}`"
 690   fi
 691
 692   ml_origdir=`${PWDCMD-pwd}`
 693   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 694   # cd to top-level-build-dir/${with_target_subdir}
 695   cd ..
 696
 697   for ml_dir in ${multidirs}; do
 698
 699     if [ "${ml_verbose}" = --verbose ]; then
 700       echo "Running configure in multilib subdir ${ml_dir}"
 701       echo "pwd: `${PWDCMD-pwd}`"
 702     fi
 703
 704     if [ -d ${ml_dir} ]; then true; else
 705       # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
 706       pathcomp=""
 707       for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
 708         pathcomp="$pathcomp$d"
 709         case "$pathcomp" in
 710           -* ) pathcomp=./$pathcomp ;;
 711         esac
 712         if test ! -d "$pathcomp"; then
 713            echo "mkdir $pathcomp" 1>&2
 714            mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
 715         fi
 716         if test ! -d "$pathcomp"; then
 717            exit $lasterr
 718         fi
 719         pathcomp="$pathcomp/"
 720       done
 721     fi
 722     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 723
 724     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 725     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 726
 727     case ${srcdir} in
 728     ".")
 729       echo Building symlink tree in `${PWDCMD-pwd}`/${ml_dir}/${ml_libdir}
 730       if [ "${with_target_subdir}" != "." ]; then
 731         ml_unsubdir="../"
 732       else
 733         ml_unsubdir=""
 734       fi
 735       (cd ${ml_dir}/${ml_libdir};
 736        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 737       if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
 738         if [ x"${MAKE}" = x ]; then
 739           (cd ${ml_dir}/${ml_libdir}; make distclean)
 740         else
 741           (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
 742         fi
 743       fi
 744       ml_newsrcdir="."
 745       ml_srcdiroption=
 746       multisrctop=${dotdot}
 747       ;;
 748     *)
 749       case "${srcdir}" in
 750       /* | [A-Za-z]:[\\/]* ) # absolute path
 751         ml_newsrcdir=${srcdir}
 752         ;;
 753       *) # otherwise relative
 754         ml_newsrcdir=${dotdot}${srcdir}
 755         ;;
 756       esac
 757       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 758       multisrctop=
 759       ;;
 760     esac
 761
 762     case "${progname}" in
 763     /* | [A-Za-z]:[\\/]* )     ml_recprog=${progname} ;;
 764     *)      ml_recprog=${dotdot}${progname} ;;
 765     esac
 766
 767     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 768     ML_POPDIR=`${PWDCMD-pwd}`
 769     cd ${ml_dir}/${ml_libdir}
 770
 771     if [ -f ${ml_newsrcdir}/configure ]; then
 772       ml_recprog="${ml_newsrcdir}/configure"
 773     fi
 774
 775     # find compiler flag corresponding to ${ml_dir}
 776     for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 777       dir=`echo $i | sed -e 's/;.*$//'`
 778       if [ "${dir}" = "${ml_dir}" ]; then
 779         flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
 780         break
 781       fi
 782     done
 783     ml_config_env='CC="${CC_}$flags" CXX="${CXX_}$flags" F77="${F77_}$flags" GCJ="${GCJ_}$flags" GFORTRAN="${GFORTRAN_}$flags"'
 784
 785     if [ "${with_target_subdir}" = "." ]; then
 786         CC_=$CC' '
 787         CXX_=$CXX' '
 788         F77_=$F77' '
 789         GCJ_=$GCJ' '
 790         GFORTRAN_=$GFORTRAN' '
 791     else
 792         # Create a regular expression that matches any string as long
 793         # as ML_POPDIR.
 794         popdir_rx=`echo ${ML_POPDIR} | sed 's,.,.,g'`
 795         CC_=
 796         for arg in ${CC}; do
 797           case $arg in
 798           -[BIL]"${ML_POPDIR}"/*)
 799             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"`' ' ;;
 800           "${ML_POPDIR}"/*)
 801             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 802           *)
 803             CC_="${CC_}${arg} " ;;
 804           esac
 805         done
 806
 807         CXX_=
 808         for arg in ${CXX}; do
 809           case $arg in
 810           -[BIL]"${ML_POPDIR}"/*)
 811             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"`' ' ;;
 812           "${ML_POPDIR}"/*)
 813             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 814           *)
 815             CXX_="${CXX_}${arg} " ;;
 816           esac
 817         done
 818
 819         F77_=
 820         for arg in ${F77}; do
 821           case $arg in
 822           -[BIL]"${ML_POPDIR}"/*)
 823             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"`' ' ;;
 824           "${ML_POPDIR}"/*)
 825             F77_="${F77_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 826           *)
 827             F77_="${F77_}${arg} " ;;
 828           esac
 829         done
 830
 831         GCJ_=
 832         for arg in ${GCJ}; do
 833           case $arg in
 834           -[BIL]"${ML_POPDIR}"/*)
 835             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"`' ' ;;
 836           "${ML_POPDIR}"/*)
 837             GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 838           *)
 839             GCJ_="${GCJ_}${arg} " ;;
 840           esac
 841         done
 842
 843         GFORTRAN_=
 844         for arg in ${GFORTRAN}; do
 845           case $arg in
 846           -[BIL]"${ML_POPDIR}"/*)
 847             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"`' ' ;;
 848           "${ML_POPDIR}"/*)
 849             GFORTRAN_="${GFORTRAN_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 850           *)
 851             GFORTRAN_="${GFORTRAN_}${arg} " ;;
 852           esac
 853         done
 854
 855         if test "x${LD_LIBRARY_PATH+set}" = xset; then
 856           LD_LIBRARY_PATH_=
 857           for arg in `echo "$LD_LIBRARY_PATH" | tr ':' ' '`; do
 858             case "$arg" in
 859             "${ML_POPDIR}"/*)
 860               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 861               ;;
 862             esac
 863             if test "x$LD_LIBRARY_PATH_" != x; then
 864               LD_LIBRARY_PATH_=$LD_LIBRARY_PATH_:$arg
 865             else
 866               LD_LIBRARY_PATH_=$arg
 867             fi
 868           done
 869           ml_config_env="$ml_config_env LD_LIBRARY_PATH=$LD_LIBRARY_PATH_"
 870         fi
 871
 872         if test "x${SHLIB_PATH+set}" = xset; then
 873           SHLIB_PATH_=
 874           for arg in `echo "$SHLIB_PATH" | tr ':' ' '`; do
 875             case "$arg" in
 876             "${ML_POPDIR}"/*)
 877               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 878               ;;
 879             esac
 880             if test "x$SHLIB_PATH_" != x; then
 881               SHLIB_PATH_=$SHLIB_PATH_:$arg
 882             else
 883               SHLIB_PATH_=$arg
 884             fi
 885           done
 886           ml_config_env="$ml_config_env SHLIB_PATH=$SHLIB_PATH_"
 887         fi
 888     fi
 889
 890     if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
 891         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 892         ${ac_configure_args} ${ml_srcdiroption} ; then
 893       true
 894     else
 895       exit 1
 896     fi
 897
 898     cd ${ML_POPDIR}
 899
 900   done
 901
 902   cd ${ml_origdir}
 903 fi
 904
 905 fi # ${ml_toplevel_p} = yes
 906 fi # ${enable_multilib} = yes