config-ml.in

   1 # Configure fragment invoked in the post-target section for subdirs
   2 # wanting multilib support.
   3 #
   4 # It is advisable to support a few --enable/--disable options to let the
   5 # user select which libraries s/he really wants.
   6 #
   7 # Subdirectories wishing to use multilib should put the following lines
   8 # in the "post-target" section of configure.in.
   9 #
  10 # if [ "${srcdir}" = "." ] ; then
  11 #   if [ "${with_target_subdir}" != "." ] ; then
  12 #     . ${with_multisrctop}../../config-ml.in
  13 #   else
  14 #     . ${with_multisrctop}../config-ml.in
  15 #   fi
  16 # else
  17 #   . ${srcdir}/../config-ml.in
  18 # fi
  19 #
  20 #
  21 # Things are complicated because 6 separate cases must be handled:
  22 # 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
  23 #
  24 # srcdir=. is special.  It must handle make programs that don't handle VPATH.
  25 # To implement this, a symlink tree is built for each library and for each
  26 # multilib subdir.
  27 #
  28 # The build tree is layed out as
  29 #
  30 # ./
  31 #   newlib
  32 #   m68020/
  33 #          newlib
  34 #          m68881/
  35 #                 newlib
  36 #
  37 # The nice feature about this arrangement is that inter-library references
  38 # in the build tree work without having to care where you are.  Note that
  39 # inter-library references also work in the source tree because symlink trees
  40 # are built when srcdir=.
  41 #
  42 # Unfortunately, trying to access the libraries in the build tree requires
  43 # the user to manually choose which library to use as GCC won't be able to
  44 # find the right one.  This is viewed as the lesser of two evils.
  45 #
  46 # Configure variables:
  47 # ${with_target_subdir} = "." for native, or ${target_alias} for cross.
  48 # Set by top level Makefile.
  49 # ${with_multisrctop} = how many levels of multilibs there are in the source
  50 # tree.  It exists to handle the case of configuring in the source tree:
  51 # ${srcdir} is not constant.
  52 # ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
  53 #
  54 # Makefile variables:
  55 # MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
  56 # (FIXME: note that this is different than ${with_multisrctop}.  Check out.).
  57 # MULTIBUILDTOP = number of multilib levels in build tree
  58 # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
  59 # (only defined in each library's main Makefile).
  60 # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
  61 # (only defined in each multilib subdir).
  62
  63 # FIXME: Multilib is currently disabled by default for everything other than
  64 # newlib.  It is up to each target to turn on multilib support for the other
  65 # libraries as desired.
  66
  67 # Autoconf incoming variables:
  68 # srcdir, host, ac_configure_args
  69 #
  70 # We *could* figure srcdir and host out, but we'd have to do work that
  71 # our caller has already done to figure them out and requiring these two
  72 # seems reasonable.
  73 # Note that `host' in this case is GCC's `target'.  Target libraries are
  74 # configured for a particular host.
  75
  76 Makefile=${ac_file-Makefile}
  77 ml_config_shell=${CONFIG_SHELL-/bin/sh}
  78 ml_arguments="${ac_configure_args}"
  79 ml_realsrcdir=${srcdir}
  80
  81 # Scan all the arguments and set all the ones we need.
  82
  83 ml_verbose=--verbose
  84 for option in ${ml_arguments}
  85 do
  86   case $option in
  87   --*) ;;
  88   -*) option=-$option ;;
  89   esac
  90
  91   case $option in
  92   --*=*)
  93         optarg=`echo $option | sed -e 's/^[^=]*=//'`
  94         ;;
  95   esac
  96
  97   case $option in
  98   --disable-*)
  99         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
 100         eval $enableopt=no
 101         ;;
 102   --enable-*)
 103         case "$option" in
 104         *=*)    ;;
 105         *)      optarg=yes ;;
 106         esac
 107         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 108         eval $enableopt="$optarg"
 109         ;;
 110   --norecursion | --no*)
 111         ml_norecursion=yes
 112         ;;
 113   --silent | --sil* | --quiet | --q*)
 114         ml_verbose=--silent
 115         ;;
 116   --verbose | --v | --verb*)
 117         ml_verbose=--verbose
 118         ;;
 119   --with-*)
 120         case "$option" in
 121         *=*)    ;;
 122         *)      optarg=yes ;;
 123         esac
 124         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 125         eval $withopt="$optarg"
 126         ;;
 127   --without-*)
 128         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 129         eval $withopt=no
 130         ;;
 131   esac
 132 done
 133
 134 # Only do this if --enable-multilib.
 135 if [ "${enable_multilib}" = yes ]; then
 136
 137 # Compute whether this is the library's top level directory
 138 # (ie: not a multilib subdirectory, and not a subdirectory like newlib/src).
 139 # ${with_multisubdir} tells us we're in the right branch, but we could be
 140 # in a subdir of that.
 141 # ??? The previous version could void this test by separating the process into
 142 # two files: one that only the library's toplevel configure.in ran (to
 143 # configure the multilib subdirs), and another that all configure.in's ran to
 144 # update the Makefile.  It seemed reasonable to collapse all multilib support
 145 # into one file, but it does leave us with having to perform this test.
 146 ml_toplevel_p=no
 147 if [ -z "${with_multisubdir}" ]; then
 148   if [ "${srcdir}" = "." ]; then
 149     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 150     # ${with_target_subdir} = "." for native, otherwise target alias.
 151     if [ "${with_target_subdir}" = "." ]; then
 152       if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 153         ml_toplevel_p=yes
 154       fi
 155     else
 156       if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
 157         ml_toplevel_p=yes
 158       fi
 159     fi
 160   else
 161     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 162     if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 163       ml_toplevel_p=yes
 164     fi
 165   fi
 166 fi
 167
 168 # If this is the library's top level directory, set multidirs to the
 169 # multilib subdirs to support.  This lives at the top because we need
 170 # `multidirs' set right away.
 171
 172 if [ "${ml_toplevel_p}" = yes ]; then
 173
 174 multidirs=
 175 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 176   dir=`echo $i | sed -e 's/;.*$//'`
 177   if [ "${dir}" = "." ]; then
 178     true
 179   else
 180     if [ -z "${multidirs}" ]; then
 181       multidirs="${dir}"
 182     else
 183       multidirs="${multidirs} ${dir}"
 184     fi
 185   fi
 186 done
 187
 188 # Target libraries are configured for the host they run on, so we check
 189 # $host here, not $target.
 190
 191 case "${host}" in
 192 arc-*-elf*)
 193         if [ x$enable_biendian != xyes ]
 194         then
 195           old_multidirs=${multidirs}
 196           multidirs=""
 197           for x in ${old_multidirs}; do
 198             case "${x}" in
 199               *be*) : ;;
 200               *) multidirs="${multidirs} ${x}" ;;
 201             esac
 202           done
 203         fi
 204         ;;
 205 arm-*-*)
 206         if [ x"$enable_fpu" = xno ]
 207         then
 208           old_multidirs=${multidirs}
 209           multidirs=""
 210           for x in ${old_multidirs}; do
 211             case "${x}" in
 212               *fpu*) : ;;
 213               *) multidirs="${multidirs} ${x}" ;;
 214             esac
 215           done
 216         fi
 217         if [ x"$enable_26bit" = xno ]
 218         then
 219           old_multidirs=${multidirs}
 220           multidirs=""
 221           for x in ${old_multidirs}; do
 222             case "${x}" in
 223               *26bit*) : ;;
 224               *) multidirs="${multidirs} ${x}" ;;
 225             esac
 226           done
 227         fi
 228         if [ x"$enable_underscore" = xno ]
 229         then
 230           old_multidirs=${multidirs}
 231           multidirs=""
 232           for x in ${old_multidirs}; do
 233             case "${x}" in
 234               *under*) : ;;
 235               *) multidirs="${multidirs} ${x}" ;;
 236             esac
 237           done
 238         fi
 239         if [ x"$enable_interwork" = xno ]
 240         then
 241           old_multidirs=${multidirs}
 242           multidirs=""
 243           for x in ${old_multidirs}; do
 244             case "${x}" in
 245               *interwork*) : ;;
 246               *) multidirs="${multidirs} ${x}" ;;
 247             esac
 248           done
 249         fi
 250         if [ x$enable_biendian = xno ]
 251         then
 252           old_multidirs="${multidirs}"
 253           multidirs=""
 254           for x in ${old_multidirs}; do
 255             case "$x" in
 256               *le* ) : ;;
 257               *be* ) : ;;
 258               *) multidirs="${multidirs} ${x}" ;;
 259             esac
 260           done
 261         fi
 262         if [ x"$enable_nofmult" = xno ]
 263         then
 264           old_multidirs="${multidirs}"
 265           multidirs=""
 266           for x in ${old_multidirs}; do
 267             case "$x" in
 268               *nofmult* ) : ;;
 269               *) multidirs="${multidirs} ${x}" ;;
 270             esac
 271           done
 272         fi
 273         ;;
 274 m68*-*-*)
 275         if [ x$enable_softfloat = xno ]
 276         then
 277           old_multidirs="${multidirs}"
 278           multidirs=""
 279           for x in ${old_multidirs}; do
 280             case "$x" in
 281               *soft-float* ) : ;;
 282               *) multidirs="${multidirs} ${x}" ;;
 283             esac
 284           done
 285         fi
 286         if [ x$enable_m68881 = xno ]
 287         then
 288           old_multidirs="${multidirs}"
 289           multidirs=""
 290           for x in ${old_multidirs}; do
 291             case "$x" in
 292               *m68881* ) : ;;
 293               *) multidirs="${multidirs} ${x}" ;;
 294             esac
 295           done
 296         fi
 297         if [ x$enable_m68000 = xno ]
 298         then
 299           old_multidirs="${multidirs}"
 300           multidirs=""
 301           for x in ${old_multidirs}; do
 302             case "$x" in
 303               *m68000* ) : ;;
 304               *) multidirs="${multidirs} ${x}" ;;
 305             esac
 306           done
 307         fi
 308         if [ x$enable_m68020 = xno ]
 309         then
 310           old_multidirs="${multidirs}"
 311           multidirs=""
 312           for x in ${old_multidirs}; do
 313             case "$x" in
 314               *m68020* ) : ;;
 315               *) multidirs="${multidirs} ${x}" ;;
 316             esac
 317           done
 318         fi
 319         ;;
 320 mips*-*-*)
 321         if [ x$enable_single_float = xno ]
 322         then
 323           old_multidirs="${multidirs}"
 324           multidirs=""
 325           for x in ${old_multidirs}; do
 326             case "$x" in
 327               *single* ) : ;;
 328               *) multidirs="${multidirs} ${x}" ;;
 329             esac
 330           done
 331         fi
 332         if [ x$enable_biendian = xno ]
 333         then
 334           old_multidirs="${multidirs}"
 335           multidirs=""
 336           for x in ${old_multidirs}; do
 337             case "$x" in
 338               *el* ) : ;;
 339               *eb* ) : ;;
 340               *) multidirs="${multidirs} ${x}" ;;
 341             esac
 342           done
 343         fi
 344         if [ x$enable_softfloat = xno ]
 345         then
 346           old_multidirs="${multidirs}"
 347           multidirs=""
 348           for x in ${old_multidirs}; do
 349             case "$x" in
 350               *soft-float* ) : ;;
 351               *) multidirs="${multidirs} ${x}" ;;
 352             esac
 353           done
 354         fi
 355         case " $multidirs " in
 356         *" mabi=64 "*)
 357           # We will not be able to create libraries with -mabi=64 if
 358           # we cannot even link a trivial program.  It usually
 359           # indicates the 64bit libraries are missing.
 360           if echo 'main() {}' > conftest.c &&
 361              ${CC-gcc} -mabi=64 conftest.c -o conftest; then
 362             :
 363           else
 364             echo Could not link program with -mabi=64, disabling it.
 365             old_multidirs="${multidirs}"
 366             multidirs=""
 367             for x in ${old_multidirs}; do
 368               case "$x" in
 369               *mabi=64* ) : ;;
 370               *) multidirs="${multidirs} ${x}" ;;
 371               esac
 372             done
 373           fi
 374           rm -f conftest.c conftest
 375           ;;
 376         esac
 377         ;;
 378 powerpc*-*-* | rs6000*-*-*)
 379         if [ x$enable_aix64 = xno ]
 380         then
 381           old_multidirs="${multidirs}"
 382           multidirs=""
 383           for x in ${old_multidirs}; do
 384             case "$x" in
 385               *ppc64* ) : ;;
 386               *) multidirs="${multidirs} ${x}" ;;
 387             esac
 388           done
 389         fi
 390         if [ x$enable_pthread = xno ]
 391         then
 392           old_multidirs="${multidirs}"
 393           multidirs=""
 394           for x in ${old_multidirs}; do
 395             case "$x" in
 396               *pthread* ) : ;;
 397               *) multidirs="${multidirs} ${x}" ;;
 398             esac
 399           done
 400         fi
 401         if [ x$enable_softfloat = xno ]
 402         then
 403           old_multidirs="${multidirs}"
 404           multidirs=""
 405           for x in ${old_multidirs}; do
 406             case "$x" in
 407               *soft-float* ) : ;;
 408               *) multidirs="${multidirs} ${x}" ;;
 409             esac
 410           done
 411         fi
 412         if [ x$enable_powercpu = xno ]
 413         then
 414           old_multidirs="${multidirs}"
 415           multidirs=""
 416           for x in ${old_multidirs}; do
 417             case "$x" in
 418               power | */power | */power/* ) : ;;
 419               *) multidirs="${multidirs} ${x}" ;;
 420             esac
 421           done
 422         fi
 423         if [ x$enable_powerpccpu = xno ]
 424         then
 425           old_multidirs="${multidirs}"
 426           multidirs=""
 427           for x in ${old_multidirs}; do
 428             case "$x" in
 429               *powerpc* ) : ;;
 430               *) multidirs="${multidirs} ${x}" ;;
 431             esac
 432           done
 433         fi
 434         if [ x$enable_powerpcos = xno ]
 435         then
 436           old_multidirs="${multidirs}"
 437           multidirs=""
 438           for x in ${old_multidirs}; do
 439             case "$x" in
 440               *mcall-linux* | *mcall-solaris* ) : ;;
 441               *) multidirs="${multidirs} ${x}" ;;
 442             esac
 443           done
 444         fi
 445         if [ x$enable_biendian = xno ]
 446         then
 447           old_multidirs="${multidirs}"
 448           multidirs=""
 449           for x in ${old_multidirs}; do
 450             case "$x" in
 451               *mlittle* | *mbig* ) : ;;
 452               *) multidirs="${multidirs} ${x}" ;;
 453             esac
 454           done
 455         fi
 456         if [ x$enable_sysv = xno ]
 457         then
 458           old_multidirs="${multidirs}"
 459           multidirs=""
 460           for x in ${old_multidirs}; do
 461             case "$x" in
 462               *mcall-sysv* ) : ;;
 463               *) multidirs="${multidirs} ${x}" ;;
 464             esac
 465           done
 466         fi
 467         ;;
 468 sparc*-*-*)
 469         case " $multidirs " in
 470         *" m64 "*)
 471           # We will not be able to create libraries with -m64 if
 472           # we cannot even link a trivial program.  It usually
 473           # indicates the 64bit libraries are missing.
 474           if echo 'main() {}' > conftest.c &&
 475              ${CC-gcc} -m64 conftest.c -o conftest; then
 476             :
 477           else
 478             echo Could not link program with -m64, disabling it.
 479             old_multidirs="${multidirs}"
 480             multidirs=""
 481             for x in ${old_multidirs}; do
 482               case "$x" in
 483               *m64* ) : ;;
 484               *) multidirs="${multidirs} ${x}" ;;
 485               esac
 486             done
 487           fi
 488           rm -f conftest.c conftest
 489           ;;
 490         esac
 491         ;;
 492 esac
 493
 494 # Remove extraneous blanks from multidirs.
 495 # Tests like `if [ -n "$multidirs" ]' require it.
 496 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
 497
 498 # Add code to library's top level makefile to handle building the multilib
 499 # subdirs.
 500
 501 cat > Multi.tem <<\EOF
 502
 503 PWD_COMMAND=$${PWDCMD-pwd}
 504
 505 # FIXME: There should be an @-sign in front of the `if'.
 506 # Leave out until this is tested a bit more.
 507 multi-do:
 508         if [ -z "$(MULTIDIRS)" ]; then \
 509           true; \
 510         else \
 511           rootpre=`${PWD_COMMAND}`/; export rootpre; \
 512           srcrootpre=`cd $(srcdir); ${PWD_COMMAND}`/; export srcrootpre; \
 513           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 514           compiler="$(CC)"; \
 515           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 516             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 517             if [ "$${dir}" = "." ]; then \
 518               true; \
 519             else \
 520               if [ -d ../$${dir}/$${lib} ]; then \
 521                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 522                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 523                                 CFLAGS="$(CFLAGS) $${flags}" \
 524                                 prefix="$(prefix)" \
 525                                 exec_prefix="$(exec_prefix)" \
 526                                 GCJFLAGS="$(GCJFLAGS) $${flags}" \
 527                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 528                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 529                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 530                                 LDFLAGS="$(LDFLAGS) $${flags}" \
 531                                 DESTDIR="$(DESTDIR)" \
 532                                 $(DO)); then \
 533                   true; \
 534                 else \
 535                   exit 1; \
 536                 fi; \
 537               else true; \
 538               fi; \
 539             fi; \
 540           done; \
 541         fi
 542
 543 # FIXME: There should be an @-sign in front of the `if'.
 544 # Leave out until this is tested a bit more.
 545 multi-clean:
 546         if [ -z "$(MULTIDIRS)" ]; then \
 547           true; \
 548         else \
 549           lib=`${PWD_COMMAND} | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 550           for dir in Makefile $(MULTIDIRS); do \
 551             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 552               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 553               then true; \
 554               else exit 1; \
 555               fi; \
 556             else true; \
 557             fi; \
 558           done; \
 559         fi
 560 EOF
 561
 562 cat ${Makefile} Multi.tem > Makefile.tem
 563 rm -f ${Makefile} Multi.tem
 564 mv Makefile.tem ${Makefile}
 565
 566 fi # ${ml_toplevel_p} = yes
 567
 568 if [ "${ml_verbose}" = --verbose ]; then
 569   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 570   if [ "${ml_toplevel_p}" = yes ]; then
 571     echo "multidirs=${multidirs}"
 572   fi
 573   echo "with_multisubdir=${with_multisubdir}"
 574 fi
 575
 576 if [ "${srcdir}" = "." ]; then
 577   if [ "${with_target_subdir}" != "." ]; then
 578     ml_srcdotdot="../"
 579   else
 580     ml_srcdotdot=""
 581   fi
 582 else
 583   ml_srcdotdot=""
 584 fi
 585
 586 if [ -z "${with_multisubdir}" ]; then
 587   ml_subdir=
 588   ml_builddotdot=
 589   : # ml_srcdotdot= # already set
 590 else
 591   ml_subdir="/${with_multisubdir}"
 592   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 593   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 594   if [ "$srcdir" = "." ]; then
 595     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 596   else
 597     : # ml_srcdotdot= # already set
 598   fi
 599 fi
 600
 601 if [ "${ml_toplevel_p}" = yes ]; then
 602   ml_do='$(MAKE)'
 603   ml_clean='$(MAKE)'
 604 else
 605   ml_do=true
 606   ml_clean=true
 607 fi
 608
 609 # TOP is used by newlib and should not be used elsewhere for this purpose.
 610 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 611 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 612 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 613 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 614 # of course.
 615 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 616 # and lists the subdirectories to recurse into.
 617 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 618 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 619 # a leading '/'.
 620 # MULTIDO is used for targets like all, install, and check where
 621 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 622 # MULTICLEAN is used for the *clean targets.
 623 #
 624 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 625 # currently kept separate because we don't want the *clean targets to require
 626 # the existence of the compiler (which MULTIDO currently requires) and
 627 # therefore we'd have to record the directory options as well as names
 628 # (currently we just record the names and use --print-multi-lib to get the
 629 # options).
 630
 631 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 632     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 633     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 634     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 635     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 636     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 637     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 638         ${Makefile} > Makefile.tem
 639 rm -f ${Makefile}
 640 mv Makefile.tem ${Makefile}
 641
 642 # If this is the library's top level, configure each multilib subdir.
 643 # This is done at the end because this is the loop that runs configure
 644 # in each multilib subdir and it seemed reasonable to finish updating the
 645 # Makefile before going on to configure the subdirs.
 646
 647 if [ "${ml_toplevel_p}" = yes ]; then
 648
 649 # We must freshly configure each subdirectory.  This bit of code is
 650 # actually partially stolen from the main configure script.  FIXME.
 651
 652 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 653
 654   if [ "${ml_verbose}" = --verbose ]; then
 655     echo "Running configure in multilib subdirs ${multidirs}"
 656     echo "pwd: `${PWDCMD-pwd}`"
 657   fi
 658
 659   ml_origdir=`${PWDCMD-pwd}`
 660   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 661   # cd to top-level-build-dir/${with_target_subdir}
 662   cd ..
 663
 664   for ml_dir in ${multidirs}; do
 665
 666     if [ "${ml_verbose}" = --verbose ]; then
 667       echo "Running configure in multilib subdir ${ml_dir}"
 668       echo "pwd: `${PWDCMD-pwd}`"
 669     fi
 670
 671     if [ -d ${ml_dir} ]; then true; else
 672       # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
 673       pathcomp=""
 674       for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
 675         pathcomp="$pathcomp$d"
 676         case "$pathcomp" in
 677           -* ) pathcomp=./$pathcomp ;;
 678         esac
 679         if test ! -d "$pathcomp"; then
 680            echo "mkdir $pathcomp" 1>&2
 681            mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
 682         fi
 683         if test ! -d "$pathcomp"; then
 684            exit $lasterr
 685         fi
 686         pathcomp="$pathcomp/"
 687       done
 688     fi
 689     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 690
 691     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 692     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 693
 694     case ${srcdir} in
 695     ".")
 696       echo Building symlink tree in `${PWDCMD-pwd}`/${ml_dir}/${ml_libdir}
 697       if [ "${with_target_subdir}" != "." ]; then
 698         ml_unsubdir="../"
 699       else
 700         ml_unsubdir=""
 701       fi
 702       (cd ${ml_dir}/${ml_libdir};
 703        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 704       if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
 705         if [ x"${MAKE}" = x ]; then
 706           (cd ${ml_dir}/${ml_libdir}; make distclean)
 707         else
 708           (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
 709         fi
 710       fi
 711       ml_newsrcdir="."
 712       ml_srcdiroption=
 713       multisrctop=${dotdot}
 714       ;;
 715     *)
 716       case "${srcdir}" in
 717       /* | [A-Za-z]:[\\/]* ) # absolute path
 718         ml_newsrcdir=${srcdir}
 719         ;;
 720       *) # otherwise relative
 721         ml_newsrcdir=${dotdot}${srcdir}
 722         ;;
 723       esac
 724       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 725       multisrctop=
 726       ;;
 727     esac
 728
 729     case "${progname}" in
 730     /* | [A-Za-z]:[\\/]* )     ml_recprog=${progname} ;;
 731     *)      ml_recprog=${dotdot}${progname} ;;
 732     esac
 733
 734     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 735     ML_POPDIR=`${PWDCMD-pwd}`
 736     cd ${ml_dir}/${ml_libdir}
 737
 738     if [ -f ${ml_newsrcdir}/configure ]; then
 739       ml_recprog="${ml_newsrcdir}/configure --cache-file=../config.cache"
 740     fi
 741
 742     # find compiler flag corresponding to ${ml_dir}
 743     for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 744       dir=`echo $i | sed -e 's/;.*$//'`
 745       if [ "${dir}" = "${ml_dir}" ]; then
 746         flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
 747         break
 748       fi
 749     done
 750     ml_config_env='CC="${CC_}$flags" CXX="${CXX_}$flags" GCJ="${GCJ_}$flags"'
 751
 752     if [ "${with_target_subdir}" = "." ]; then
 753         CC_=$CC' '
 754         CXX_=$CXX' '
 755         GCJ_=$GCJ' '
 756     else
 757         # Create a regular expression that matches any string as long
 758         # as ML_POPDIR.
 759         popdir_rx=`echo ${ML_POPDIR} | sed 's,.,.,g'`
 760         CC_=
 761         for arg in ${CC}; do
 762           case $arg in
 763           -[BIL]"${ML_POPDIR}"/*)
 764             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"`' ' ;;
 765           "${ML_POPDIR}"/*)
 766             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 767           *)
 768             CC_="${CC_}${arg} " ;;
 769           esac
 770         done
 771
 772         CXX_=
 773         for arg in ${CXX}; do
 774           case $arg in
 775           -[BIL]"${ML_POPDIR}"/*)
 776             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"`' ' ;;
 777           "${ML_POPDIR}"/*)
 778             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 779           *)
 780             CXX_="${CXX_}${arg} " ;;
 781           esac
 782         done
 783
 784         GCJ_=
 785         for arg in ${GCJ}; do
 786           case $arg in
 787           -[BIL]"${ML_POPDIR}"/*)
 788             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"`' ' ;;
 789           "${ML_POPDIR}"/*)
 790             GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 791           *)
 792             GCJ_="${GCJ_}${arg} " ;;
 793           esac
 794         done
 795
 796         if test "x${LD_LIBRARY_PATH+set}" = xset; then
 797           LD_LIBRARY_PATH_=
 798           for arg in `echo "$LD_LIBRARY_PATH" | tr ':' ' '`; do
 799             case "$arg" in
 800             "${ML_POPDIR}"/*)
 801               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 802               ;;
 803             esac
 804             if test "x$LD_LIBRARY_PATH_" != x; then
 805               LD_LIBRARY_PATH_=$LD_LIBRARY_PATH_:$arg
 806             else
 807               LD_LIBRARY_PATH_=$arg
 808             fi
 809           done
 810           ml_config_env="$ml_config_env LD_LIBRARY_PATH=$LD_LIBRARY_PATH_"
 811         fi
 812
 813         if test "x${SHLIB_PATH+set}" = xset; then
 814           SHLIB_PATH_=
 815           for arg in `echo "$SHLIB_PATH" | tr ':' ' '`; do
 816             case "$arg" in
 817             "${ML_POPDIR}"/*)
 818               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 819               ;;
 820             esac
 821             if test "x$SHLIB_PATH_" != x; then
 822               SHLIB_PATH_=$SHLIB_PATH_:$arg
 823             else
 824               SHLIB_PATH_=$arg
 825             fi
 826           done
 827           ml_config_env="$ml_config_env SHLIB_PATH=$SHLIB_PATH_"
 828         fi
 829     fi
 830
 831     if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
 832         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 833         ${ml_arguments} ${ml_srcdiroption} ; then
 834       true
 835     else
 836       exit 1
 837     fi
 838
 839     cd ${ML_POPDIR}
 840
 841   done
 842
 843   cd ${ml_origdir}
 844 fi
 845
 846 fi # ${ml_toplevel_p} = yes
 847 fi # ${enable_multilib} = yes