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=${CONFIG_SHELL-/bin/sh}
  78 ml_realsrcdir=${srcdir}
  79
  80 # Scan all the arguments and set all the ones we need.
  81
  82 ml_verbose=--verbose
  83 for option in ${ac_configure_args}
  84 do
  85   case $option in
  86   --*) ;;
  87   -*) option=-$option ;;
  88   esac
  89
  90   case $option in
  91   --*=*)
  92         optarg=`echo $option | sed -e 's/^[^=]*=//'`
  93         ;;
  94   esac
  95
  96   case $option in
  97   --disable-*)
  98         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
  99         eval $enableopt=no
 100         ;;
 101   --enable-*)
 102         case "$option" in
 103         *=*)    ;;
 104         *)      optarg=yes ;;
 105         esac
 106         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 107         eval $enableopt="$optarg"
 108         ;;
 109   --norecursion | --no-recursion)
 110         ml_norecursion=yes
 111         ;;
 112   --silent | --sil* | --quiet | --q*)
 113         ml_verbose=--silent
 114         ;;
 115   --verbose | --v | --verb*)
 116         ml_verbose=--verbose
 117         ;;
 118   --with-*)
 119         case "$option" in
 120         *=*)    ;;
 121         *)      optarg=yes ;;
 122         esac
 123         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 124         eval $withopt="$optarg"
 125         ;;
 126   --without-*)
 127         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 128         eval $withopt=no
 129         ;;
 130   esac
 131 done
 132
 133 # Only do this if --enable-multilib.
 134 if [ "${enable_multilib}" = yes ]; then
 135
 136 # Compute whether this is the library's top level directory
 137 # (ie: not a multilib subdirectory, and not a subdirectory like newlib/src).
 138 # ${with_multisubdir} tells us we're in the right branch, but we could be
 139 # in a subdir of that.
 140 # ??? The previous version could void this test by separating the process into
 141 # two files: one that only the library's toplevel configure.in ran (to
 142 # configure the multilib subdirs), and another that all configure.in's ran to
 143 # update the Makefile.  It seemed reasonable to collapse all multilib support
 144 # into one file, but it does leave us with having to perform this test.
 145 ml_toplevel_p=no
 146 if [ -z "${with_multisubdir}" ]; then
 147   if [ "${srcdir}" = "." ]; then
 148     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 149     # ${with_target_subdir} = "." for native, otherwise target alias.
 150     if [ "${with_target_subdir}" = "." ]; then
 151       if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 152         ml_toplevel_p=yes
 153       fi
 154     else
 155       if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
 156         ml_toplevel_p=yes
 157       fi
 158     fi
 159   else
 160     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 161     if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 162       ml_toplevel_p=yes
 163     fi
 164   fi
 165 fi
 166
 167 # If this is the library's top level directory, set multidirs to the
 168 # multilib subdirs to support.  This lives at the top because we need
 169 # `multidirs' set right away.
 170
 171 if [ "${ml_toplevel_p}" = yes ]; then
 172
 173 multidirs=
 174 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 175   dir=`echo $i | sed -e 's/;.*$//'`
 176   if [ "${dir}" = "." ]; then
 177     true
 178   else
 179     if [ -z "${multidirs}" ]; then
 180       multidirs="${dir}"
 181     else
 182       multidirs="${multidirs} ${dir}"
 183     fi
 184   fi
 185 done
 186
 187 # Target libraries are configured for the host they run on, so we check
 188 # $host here, not $target.
 189
 190 case "${host}" in
 191 arc-*-elf*)
 192         if [ x$enable_biendian != xyes ]
 193         then
 194           old_multidirs=${multidirs}
 195           multidirs=""
 196           for x in ${old_multidirs}; do
 197             case "${x}" in
 198               *be*) : ;;
 199               *) multidirs="${multidirs} ${x}" ;;
 200             esac
 201           done
 202         fi
 203         ;;
 204 arm-*-*)
 205         if [ x"$enable_fpu" = xno ]
 206         then
 207           old_multidirs=${multidirs}
 208           multidirs=""
 209           for x in ${old_multidirs}; do
 210             case "${x}" in
 211               *fpu*) : ;;
 212               *) multidirs="${multidirs} ${x}" ;;
 213             esac
 214           done
 215         fi
 216         if [ x"$enable_26bit" = xno ]
 217         then
 218           old_multidirs=${multidirs}
 219           multidirs=""
 220           for x in ${old_multidirs}; do
 221             case "${x}" in
 222               *26bit*) : ;;
 223               *) multidirs="${multidirs} ${x}" ;;
 224             esac
 225           done
 226         fi
 227         if [ x"$enable_underscore" = xno ]
 228         then
 229           old_multidirs=${multidirs}
 230           multidirs=""
 231           for x in ${old_multidirs}; do
 232             case "${x}" in
 233               *under*) : ;;
 234               *) multidirs="${multidirs} ${x}" ;;
 235             esac
 236           done
 237         fi
 238         if [ x"$enable_interwork" = xno ]
 239         then
 240           old_multidirs=${multidirs}
 241           multidirs=""
 242           for x in ${old_multidirs}; do
 243             case "${x}" in
 244               *interwork*) : ;;
 245               *) multidirs="${multidirs} ${x}" ;;
 246             esac
 247           done
 248         fi
 249         if [ x$enable_biendian = xno ]
 250         then
 251           old_multidirs="${multidirs}"
 252           multidirs=""
 253           for x in ${old_multidirs}; do
 254             case "$x" in
 255               *le* ) : ;;
 256               *be* ) : ;;
 257               *) multidirs="${multidirs} ${x}" ;;
 258             esac
 259           done
 260         fi
 261         if [ x"$enable_nofmult" = xno ]
 262         then
 263           old_multidirs="${multidirs}"
 264           multidirs=""
 265           for x in ${old_multidirs}; do
 266             case "$x" in
 267               *nofmult* ) : ;;
 268               *) multidirs="${multidirs} ${x}" ;;
 269             esac
 270           done
 271         fi
 272         ;;
 273 m68*-*-*)
 274         if [ x$enable_softfloat = xno ]
 275         then
 276           old_multidirs="${multidirs}"
 277           multidirs=""
 278           for x in ${old_multidirs}; do
 279             case "$x" in
 280               *soft-float* ) : ;;
 281               *) multidirs="${multidirs} ${x}" ;;
 282             esac
 283           done
 284         fi
 285         if [ x$enable_m68881 = xno ]
 286         then
 287           old_multidirs="${multidirs}"
 288           multidirs=""
 289           for x in ${old_multidirs}; do
 290             case "$x" in
 291               *m68881* ) : ;;
 292               *) multidirs="${multidirs} ${x}" ;;
 293             esac
 294           done
 295         fi
 296         if [ x$enable_m68000 = xno ]
 297         then
 298           old_multidirs="${multidirs}"
 299           multidirs=""
 300           for x in ${old_multidirs}; do
 301             case "$x" in
 302               *m68000* ) : ;;
 303               *) multidirs="${multidirs} ${x}" ;;
 304             esac
 305           done
 306         fi
 307         if [ x$enable_m68020 = xno ]
 308         then
 309           old_multidirs="${multidirs}"
 310           multidirs=""
 311           for x in ${old_multidirs}; do
 312             case "$x" in
 313               *m68020* ) : ;;
 314               *) multidirs="${multidirs} ${x}" ;;
 315             esac
 316           done
 317         fi
 318         ;;
 319 mips*-*-*)
 320         if [ x$enable_single_float = xno ]
 321         then
 322           old_multidirs="${multidirs}"
 323           multidirs=""
 324           for x in ${old_multidirs}; do
 325             case "$x" in
 326               *single* ) : ;;
 327               *) multidirs="${multidirs} ${x}" ;;
 328             esac
 329           done
 330         fi
 331         if [ x$enable_biendian = xno ]
 332         then
 333           old_multidirs="${multidirs}"
 334           multidirs=""
 335           for x in ${old_multidirs}; do
 336             case "$x" in
 337               *el* ) : ;;
 338               *eb* ) : ;;
 339               *) multidirs="${multidirs} ${x}" ;;
 340             esac
 341           done
 342         fi
 343         if [ x$enable_softfloat = xno ]
 344         then
 345           old_multidirs="${multidirs}"
 346           multidirs=""
 347           for x in ${old_multidirs}; do
 348             case "$x" in
 349               *soft-float* ) : ;;
 350               *) multidirs="${multidirs} ${x}" ;;
 351             esac
 352           done
 353         fi
 354         case " $multidirs " in
 355         *" mabi=64 "*)
 356           # We will not be able to create libraries with -mabi=64 if
 357           # we cannot even link a trivial program.  It usually
 358           # indicates the 64bit libraries are missing.
 359           if echo 'main() {}' > conftest.c &&
 360              ${CC-gcc} -mabi=64 conftest.c -o conftest; then
 361             :
 362           else
 363             echo Could not link program with -mabi=64, disabling it.
 364             old_multidirs="${multidirs}"
 365             multidirs=""
 366             for x in ${old_multidirs}; do
 367               case "$x" in
 368               *mabi=64* ) : ;;
 369               *) multidirs="${multidirs} ${x}" ;;
 370               esac
 371             done
 372           fi
 373           rm -f conftest.c conftest
 374           ;;
 375         esac
 376         ;;
 377 powerpc*-*-* | rs6000*-*-*)
 378         if [ x$enable_aix64 = xno ]
 379         then
 380           old_multidirs="${multidirs}"
 381           multidirs=""
 382           for x in ${old_multidirs}; do
 383             case "$x" in
 384               *ppc64* ) : ;;
 385               *) multidirs="${multidirs} ${x}" ;;
 386             esac
 387           done
 388         fi
 389         if [ x$enable_pthread = xno ]
 390         then
 391           old_multidirs="${multidirs}"
 392           multidirs=""
 393           for x in ${old_multidirs}; do
 394             case "$x" in
 395               *pthread* ) : ;;
 396               *) multidirs="${multidirs} ${x}" ;;
 397             esac
 398           done
 399         fi
 400         if [ x$enable_softfloat = xno ]
 401         then
 402           old_multidirs="${multidirs}"
 403           multidirs=""
 404           for x in ${old_multidirs}; do
 405             case "$x" in
 406               *soft-float* ) : ;;
 407               *) multidirs="${multidirs} ${x}" ;;
 408             esac
 409           done
 410         fi
 411         if [ x$enable_powercpu = xno ]
 412         then
 413           old_multidirs="${multidirs}"
 414           multidirs=""
 415           for x in ${old_multidirs}; do
 416             case "$x" in
 417               power | */power | */power/* ) : ;;
 418               *) multidirs="${multidirs} ${x}" ;;
 419             esac
 420           done
 421         fi
 422         if [ x$enable_powerpccpu = xno ]
 423         then
 424           old_multidirs="${multidirs}"
 425           multidirs=""
 426           for x in ${old_multidirs}; do
 427             case "$x" in
 428               *powerpc* ) : ;;
 429               *) multidirs="${multidirs} ${x}" ;;
 430             esac
 431           done
 432         fi
 433         if [ x$enable_powerpcos = xno ]
 434         then
 435           old_multidirs="${multidirs}"
 436           multidirs=""
 437           for x in ${old_multidirs}; do
 438             case "$x" in
 439               *mcall-linux* | *mcall-solaris* ) : ;;
 440               *) multidirs="${multidirs} ${x}" ;;
 441             esac
 442           done
 443         fi
 444         if [ x$enable_biendian = xno ]
 445         then
 446           old_multidirs="${multidirs}"
 447           multidirs=""
 448           for x in ${old_multidirs}; do
 449             case "$x" in
 450               *mlittle* | *mbig* ) : ;;
 451               *) multidirs="${multidirs} ${x}" ;;
 452             esac
 453           done
 454         fi
 455         if [ x$enable_sysv = xno ]
 456         then
 457           old_multidirs="${multidirs}"
 458           multidirs=""
 459           for x in ${old_multidirs}; do
 460             case "$x" in
 461               *mcall-sysv* ) : ;;
 462               *) multidirs="${multidirs} ${x}" ;;
 463             esac
 464           done
 465         fi
 466         ;;
 467 sparc*-*-*)
 468         case " $multidirs " in
 469         *" m64 "*)
 470           # We will not be able to create libraries with -m64 if
 471           # we cannot even link a trivial program.  It usually
 472           # indicates the 64bit libraries are missing.
 473           if echo 'main() {}' > conftest.c &&
 474              ${CC-gcc} -m64 conftest.c -o conftest; then
 475             :
 476           else
 477             echo Could not link program with -m64, disabling it.
 478             old_multidirs="${multidirs}"
 479             multidirs=""
 480             for x in ${old_multidirs}; do
 481               case "$x" in
 482               *m64* ) : ;;
 483               *) multidirs="${multidirs} ${x}" ;;
 484               esac
 485             done
 486           fi
 487           rm -f conftest.c conftest
 488           ;;
 489         esac
 490         ;;
 491 esac
 492
 493 # Remove extraneous blanks from multidirs.
 494 # Tests like `if [ -n "$multidirs" ]' require it.
 495 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
 496
 497 # Add code to library's top level makefile to handle building the multilib
 498 # subdirs.
 499
 500 cat > Multi.tem <<\EOF
 501
 502 PWD_COMMAND=$${PWDCMD-pwd}
 503
 504 # FIXME: There should be an @-sign in front of the `if'.
 505 # Leave out until this is tested a bit more.
 506 multi-do:
 507         if [ -z "$(MULTIDIRS)" ]; then \
 508           true; \
 509         else \
 510           rootpre=`${PWD_COMMAND}`/; export rootpre; \
 511           srcrootpre=`cd $(srcdir); ${PWD_COMMAND}`/; export srcrootpre; \
 512           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 513           compiler="$(CC)"; \
 514           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 515             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 516             if [ "$${dir}" = "." ]; then \
 517               true; \
 518             else \
 519               if [ -d ../$${dir}/$${lib} ]; then \
 520                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 521                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 522                                 CFLAGS="$(CFLAGS) $${flags}" \
 523                                 prefix="$(prefix)" \
 524                                 exec_prefix="$(exec_prefix)" \
 525                                 GCJFLAGS="$(GCJFLAGS) $${flags}" \
 526                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 527                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 528                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 529                                 LDFLAGS="$(LDFLAGS) $${flags}" \
 530                                 DESTDIR="$(DESTDIR)" \
 531                                 INSTALL="$(INSTALL)" \
 532                                 INSTALL_DATA="$(INSTALL_DATA)" \
 533                                 INSTALL_PROGRAM="$(INSTALL_PROGRAM)" \
 534                                 INSTALL_SCRIPT="$(INSTALL_SCRIPT)" \
 535                                 $(DO)); then \
 536                   true; \
 537                 else \
 538                   exit 1; \
 539                 fi; \
 540               else true; \
 541               fi; \
 542             fi; \
 543           done; \
 544         fi
 545
 546 # FIXME: There should be an @-sign in front of the `if'.
 547 # Leave out until this is tested a bit more.
 548 multi-clean:
 549         if [ -z "$(MULTIDIRS)" ]; then \
 550           true; \
 551         else \
 552           lib=`${PWD_COMMAND} | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 553           for dir in Makefile $(MULTIDIRS); do \
 554             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 555               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 556               then true; \
 557               else exit 1; \
 558               fi; \
 559             else true; \
 560             fi; \
 561           done; \
 562         fi
 563 EOF
 564
 565 cat ${Makefile} Multi.tem > Makefile.tem
 566 rm -f ${Makefile} Multi.tem
 567 mv Makefile.tem ${Makefile}
 568
 569 fi # ${ml_toplevel_p} = yes
 570
 571 if [ "${ml_verbose}" = --verbose ]; then
 572   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 573   if [ "${ml_toplevel_p}" = yes ]; then
 574     echo "multidirs=${multidirs}"
 575   fi
 576   echo "with_multisubdir=${with_multisubdir}"
 577 fi
 578
 579 if [ "${srcdir}" = "." ]; then
 580   if [ "${with_target_subdir}" != "." ]; then
 581     ml_srcdotdot="../"
 582   else
 583     ml_srcdotdot=""
 584   fi
 585 else
 586   ml_srcdotdot=""
 587 fi
 588
 589 if [ -z "${with_multisubdir}" ]; then
 590   ml_subdir=
 591   ml_builddotdot=
 592   : # ml_srcdotdot= # already set
 593 else
 594   ml_subdir="/${with_multisubdir}"
 595   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 596   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 597   if [ "$srcdir" = "." ]; then
 598     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 599   else
 600     : # ml_srcdotdot= # already set
 601   fi
 602 fi
 603
 604 if [ "${ml_toplevel_p}" = yes ]; then
 605   ml_do='$(MAKE)'
 606   ml_clean='$(MAKE)'
 607 else
 608   ml_do=true
 609   ml_clean=true
 610 fi
 611
 612 # TOP is used by newlib and should not be used elsewhere for this purpose.
 613 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 614 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 615 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 616 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 617 # of course.
 618 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 619 # and lists the subdirectories to recurse into.
 620 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 621 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 622 # a leading '/'.
 623 # MULTIDO is used for targets like all, install, and check where
 624 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 625 # MULTICLEAN is used for the *clean targets.
 626 #
 627 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 628 # currently kept separate because we don't want the *clean targets to require
 629 # the existence of the compiler (which MULTIDO currently requires) and
 630 # therefore we'd have to record the directory options as well as names
 631 # (currently we just record the names and use --print-multi-lib to get the
 632 # options).
 633
 634 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 635     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 636     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 637     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 638     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 639     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 640     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 641         ${Makefile} > Makefile.tem
 642 rm -f ${Makefile}
 643 mv Makefile.tem ${Makefile}
 644
 645 # If this is the library's top level, configure each multilib subdir.
 646 # This is done at the end because this is the loop that runs configure
 647 # in each multilib subdir and it seemed reasonable to finish updating the
 648 # Makefile before going on to configure the subdirs.
 649
 650 if [ "${ml_toplevel_p}" = yes ]; then
 651
 652 # We must freshly configure each subdirectory.  This bit of code is
 653 # actually partially stolen from the main configure script.  FIXME.
 654
 655 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 656
 657   if [ "${ml_verbose}" = --verbose ]; then
 658     echo "Running configure in multilib subdirs ${multidirs}"
 659     echo "pwd: `${PWDCMD-pwd}`"
 660   fi
 661
 662   ml_origdir=`${PWDCMD-pwd}`
 663   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 664   # cd to top-level-build-dir/${with_target_subdir}
 665   cd ..
 666
 667   for ml_dir in ${multidirs}; do
 668
 669     if [ "${ml_verbose}" = --verbose ]; then
 670       echo "Running configure in multilib subdir ${ml_dir}"
 671       echo "pwd: `${PWDCMD-pwd}`"
 672     fi
 673
 674     if [ -d ${ml_dir} ]; then true; else
 675       # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
 676       pathcomp=""
 677       for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
 678         pathcomp="$pathcomp$d"
 679         case "$pathcomp" in
 680           -* ) pathcomp=./$pathcomp ;;
 681         esac
 682         if test ! -d "$pathcomp"; then
 683            echo "mkdir $pathcomp" 1>&2
 684            mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
 685         fi
 686         if test ! -d "$pathcomp"; then
 687            exit $lasterr
 688         fi
 689         pathcomp="$pathcomp/"
 690       done
 691     fi
 692     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 693
 694     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 695     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 696
 697     case ${srcdir} in
 698     ".")
 699       echo Building symlink tree in `${PWDCMD-pwd}`/${ml_dir}/${ml_libdir}
 700       if [ "${with_target_subdir}" != "." ]; then
 701         ml_unsubdir="../"
 702       else
 703         ml_unsubdir=""
 704       fi
 705       (cd ${ml_dir}/${ml_libdir};
 706        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 707       if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
 708         if [ x"${MAKE}" = x ]; then
 709           (cd ${ml_dir}/${ml_libdir}; make distclean)
 710         else
 711           (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
 712         fi
 713       fi
 714       ml_newsrcdir="."
 715       ml_srcdiroption=
 716       multisrctop=${dotdot}
 717       ;;
 718     *)
 719       case "${srcdir}" in
 720       /* | [A-Za-z]:[\\/]* ) # absolute path
 721         ml_newsrcdir=${srcdir}
 722         ;;
 723       *) # otherwise relative
 724         ml_newsrcdir=${dotdot}${srcdir}
 725         ;;
 726       esac
 727       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 728       multisrctop=
 729       ;;
 730     esac
 731
 732     case "${progname}" in
 733     /* | [A-Za-z]:[\\/]* )     ml_recprog=${progname} ;;
 734     *)      ml_recprog=${dotdot}${progname} ;;
 735     esac
 736
 737     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 738     ML_POPDIR=`${PWDCMD-pwd}`
 739     cd ${ml_dir}/${ml_libdir}
 740
 741     if [ -f ${ml_newsrcdir}/configure ]; then
 742       ml_recprog="${ml_newsrcdir}/configure --cache-file=../config.cache"
 743     fi
 744
 745     # find compiler flag corresponding to ${ml_dir}
 746     for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 747       dir=`echo $i | sed -e 's/;.*$//'`
 748       if [ "${dir}" = "${ml_dir}" ]; then
 749         flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
 750         break
 751       fi
 752     done
 753     ml_config_env='CC="${CC_}$flags" CXX="${CXX_}$flags" GCJ="${GCJ_}$flags"'
 754
 755     if [ "${with_target_subdir}" = "." ]; then
 756         CC_=$CC' '
 757         CXX_=$CXX' '
 758         GCJ_=$GCJ' '
 759     else
 760         # Create a regular expression that matches any string as long
 761         # as ML_POPDIR.
 762         popdir_rx=`echo ${ML_POPDIR} | sed 's,.,.,g'`
 763         CC_=
 764         for arg in ${CC}; do
 765           case $arg in
 766           -[BIL]"${ML_POPDIR}"/*)
 767             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"`' ' ;;
 768           "${ML_POPDIR}"/*)
 769             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 770           *)
 771             CC_="${CC_}${arg} " ;;
 772           esac
 773         done
 774
 775         CXX_=
 776         for arg in ${CXX}; do
 777           case $arg in
 778           -[BIL]"${ML_POPDIR}"/*)
 779             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"`' ' ;;
 780           "${ML_POPDIR}"/*)
 781             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 782           *)
 783             CXX_="${CXX_}${arg} " ;;
 784           esac
 785         done
 786
 787         GCJ_=
 788         for arg in ${GCJ}; do
 789           case $arg in
 790           -[BIL]"${ML_POPDIR}"/*)
 791             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"`' ' ;;
 792           "${ML_POPDIR}"/*)
 793             GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 794           *)
 795             GCJ_="${GCJ_}${arg} " ;;
 796           esac
 797         done
 798
 799         if test "x${LD_LIBRARY_PATH+set}" = xset; then
 800           LD_LIBRARY_PATH_=
 801           for arg in `echo "$LD_LIBRARY_PATH" | tr ':' ' '`; do
 802             case "$arg" in
 803             "${ML_POPDIR}"/*)
 804               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 805               ;;
 806             esac
 807             if test "x$LD_LIBRARY_PATH_" != x; then
 808               LD_LIBRARY_PATH_=$LD_LIBRARY_PATH_:$arg
 809             else
 810               LD_LIBRARY_PATH_=$arg
 811             fi
 812           done
 813           ml_config_env="$ml_config_env LD_LIBRARY_PATH=$LD_LIBRARY_PATH_"
 814         fi
 815
 816         if test "x${SHLIB_PATH+set}" = xset; then
 817           SHLIB_PATH_=
 818           for arg in `echo "$SHLIB_PATH" | tr ':' ' '`; do
 819             case "$arg" in
 820             "${ML_POPDIR}"/*)
 821               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 822               ;;
 823             esac
 824             if test "x$SHLIB_PATH_" != x; then
 825               SHLIB_PATH_=$SHLIB_PATH_:$arg
 826             else
 827               SHLIB_PATH_=$arg
 828             fi
 829           done
 830           ml_config_env="$ml_config_env SHLIB_PATH=$SHLIB_PATH_"
 831         fi
 832     fi
 833
 834     if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
 835         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 836         ${ac_configure_args} ${ml_srcdiroption} ; then
 837       true
 838     else
 839       exit 1
 840     fi
 841
 842     cd ${ML_POPDIR}
 843
 844   done
 845
 846   cd ${ml_origdir}
 847 fi
 848
 849 fi # ${ml_toplevel_p} = yes
 850 fi # ${enable_multilib} = yes