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 #     . ${srcdir}/${with_multisrctop}../../config-ml.in
  13 #   else
  14 #     . ${srcdir}/${with_multisrctop}../config-ml.in
  15 #   fi
  16 # else
  17 #   . ${srcdir}/../config-ml.in
  18 # fi
  19 #
  20 # See librx/configure.in in the libg++ distribution for an example of how
  21 # to handle autoconf'd libraries.
  22 #
  23 # Things are complicated because 6 separate cases must be handled:
  24 # 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
  25 #
  26 # srcdir=. is special.  It must handle make programs that don't handle VPATH.
  27 # To implement this, a symlink tree is built for each library and for each
  28 # multilib subdir.
  29 #
  30 # The build tree is layed out as
  31 #
  32 # ./
  33 #   libg++
  34 #   newlib
  35 #   m68020/
  36 #          libg++
  37 #          newlib
  38 #          m68881/
  39 #                 libg++
  40 #                 newlib
  41 #
  42 # The nice feature about this arrangement is that inter-library references
  43 # in the build tree work without having to care where you are.  Note that
  44 # inter-library references also work in the source tree because symlink trees
  45 # are built when srcdir=.
  46 #
  47 # Configure variables:
  48 # ${with_target_subdir} = "." for native, or ${target_alias} for cross.
  49 # Set by top level Makefile.
  50 # ${with_multisrctop} = how many levels of multilibs there are in the source
  51 # tree.  It exists to handle the case of configuring in the source tree:
  52 # ${srcdir} is not constant.
  53 # ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
  54 #
  55 # Makefile variables:
  56 # MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
  57 # MULITBUILDTOP = number of multilib levels in build tree
  58 # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
  59 # (only defined in each library's main Makefile).
  60 # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
  61 # (only defined in each multilib subdir).
  62
  63 # FIXME: Multilib is currently disabled by default for everything other than
  64 # newlib.  It is up to each target to turn on multilib support for the other
  65 # libraries as desired.
  66
  67 # We have to handle being invoked by both Cygnus configure and Autoconf.
  68 # We except both to define `srcdir' and `target' (we *could* figure them
  69 # out, but we'd have to do work that they're already done to figure them out).
  70 # We expect Cygnus configure to define `arguments' and Autoconf to define
  71 # `ac_configure_args'.
  72
  73 if [ -n "${ac_configure_args}" ]; then
  74   Makefile=${ac_file-Makefile}
  75   ml_config_shell=${CONFIG_SHELL-/bin/sh}
  76   ml_arguments="${ac_configure_args}"
  77 else
  78   Makefile=${Makefile-Makefile}
  79   ml_config_shell=${config_shell-/bin/sh}
  80   ml_arguments="${arguments}"
  81 fi
  82
  83 # Scan all the arguments and set all the ones we need.
  84
  85 for option in ${ml_arguments}
  86 do
  87   case $option in
  88   --*) ;;
  89   -*) option=-$option ;;
  90   esac
  91
  92   case $option in
  93   --*=*)
  94         optarg=`echo $option | sed -e 's/^[^=]*=//'`
  95         ;;
  96   esac
  97
  98   case $option in
  99   --disable-*)
 100         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
 101         eval $enableopt=no
 102         ;;
 103   --enable-*)
 104         case "$option" in
 105         *=*)    ;;
 106         *)      optarg=yes ;;
 107         esac
 108         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 109         eval $enableopt="$optarg"
 110         ;;
 111   --norecursion | --no*)
 112         ml_norecursion=yes
 113         ;;
 114   --verbose | --v | --verb*)
 115         ml_verbose=--verbose
 116         ;;
 117   --with-*)
 118         case "$option" in
 119         *=*)    ;;
 120         *)      optarg=yes ;;
 121         esac
 122         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 123         eval $withopt="$optarg"
 124         ;;
 125   --without-*)
 126         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 127         eval $withopt=no
 128         ;;
 129   esac
 130 done
 131
 132 # Only do this if --enable-multilib.
 133 if [ "${enable_multilib}" = yes ]; then
 134
 135 # Compute whether this is the library's top level directory
 136 # (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).
 137 # ${with_multisubdir} tells us we're in the right branch, but we could be
 138 # in a subdir of that.
 139 # ??? The previous version could void this test by separating the process into
 140 # two files: one that only the library's toplevel configure.in ran (to
 141 # configure the multilib subdirs), and another that all configure.in's ran to
 142 # update the Makefile.  It seemed reasonable to collapse all multilib support
 143 # into one file, but it does leave us with having to perform this test.
 144 ml_toplevel_p=no
 145 if [ -z "${with_multisubdir}" ]; then
 146   if [ "${srcdir}" = "." ]; then
 147     # ${with_target_subdir} = "." for native, otherwise target alias.
 148     if [ "${with_target_subdir}" = "." ]; then
 149       if [ -f ../config-ml.in ]; then
 150         ml_toplevel_p=yes
 151       fi
 152     else
 153       if [ -f ../../config-ml.in ]; then
 154         ml_toplevel_p=yes
 155       fi
 156     fi
 157   else
 158     if [ -f ${srcdir}/../config-ml.in ]; then
 159       ml_toplevel_p=yes
 160     fi
 161   fi
 162 fi
 163
 164 # If this is the library's top level directory, set multidirs to the
 165 # multilib subdirs to support.  This lives at the top because we need
 166 # `multidirs' set right away, and this section is subject to frequent
 167 # editing (addition of new targets, etc.).
 168
 169 if [ "${ml_toplevel_p}" = yes ]; then
 170
 171 case "${target}" in
 172 # start-sanitize-arc
 173 arc-sbp-elf*)
 174         if [ x$enable_biendian = xyes ]
 175         then
 176                 multidirs="be host graphics audio be/host be/graphics be/audio"
 177         else
 178                 multidirs="host graphics audio"
 179         fi
 180         ;;
 181 arc-*-*)
 182         multidirs="be"
 183         ;;
 184 # end-sanitize-arc
 185 hppa*-*-*)
 186         multidirs="soft-float"
 187         ;;
 188 m68*-*-aout* | m68*-*-coff* | m68*-*-elf* | m68*-*-vxworks*)
 189         multidirs="m68000 m68020 m68881 msoft-float m68000/m68881 m68000/msoft-float m68020/m68881 m68020/msoft-float"
 190         ;;
 191 i960-*-*)
 192         multidirs=float
 193         ;;
 194 sparclite-*-* | sparclitefrw*-*-*)
 195         multidirs="mfpu msoft-float mflat mno-flat mfpu/mflat mfpu/mno-flat msoft-float/mflat msoft-float/mno-flat"
 196         ;;
 197 sparc-*-* | sparcfrw*-*-*)
 198         multidirs="soft v8 soft/v8"
 199         ;;
 200 z8k-*-coff)
 201         multidirs="z8001 std z8001/std"
 202         ;;
 203 h8300-*-*)
 204         multidirs=h8300h
 205         ;;
 206 h8500-*-*)
 207         multidirs="mbig msmall mcompact mmedium"
 208         ;;
 209 # start-sanitize-jaguar
 210 jaguar-*-*)
 211         multidirs="be"
 212         ;;
 213 # end-sanitize-jaguar
 214 sh-*-*)
 215         multidirs="ml m2 ml/m2"
 216 # start-sanitize-sh3e
 217         multidirs="ml m2 ml/m2 m3e ml/m3e"
 218 # end-sanitize-sh3e
 219         ;;
 220 mips*-*-*)
 221         # Note that not all of these will be built for a particular
 222         # target; what is build depends upon the output gcc
 223         # --print-multi-lib.  We configure them all, to make our life
 224         # simpler here.  If somebody cares about configuration
 225         # efficiency, they will need to switch off on the various
 226         # targets to configure just the directories needed for that
 227         # target.
 228         #
 229         # In the long run, it would be better to configure based on
 230         # the output of gcc --print-multi-lib, but, to do that, we
 231         # would have to build gcc before configuring newlib.
 232         #
 233         # Default to including the single-float directories.
 234         if [ x$enable_single_float = x ]; then
 235           enable_single_float=yes
 236         fi
 237         if [ x$enable_single_float = xyes ]; then
 238           multidirs="soft-float single el eb mips1 mips3 soft-float/el soft-float/eb soft-float/mips1 soft-float/mips3 soft-float/el/mips1 soft-float/el/mips3 soft-float/eb/mips1 soft-float/eb/mips3 single/el single/eb single/mips1 single/mips3 single/el/mips1 single/el/mips3 single/eb/mips1 single/eb/mips3 el/mips1 el/mips3 eb/mips1 eb/mips3"
 239         else
 240           multidirs="soft-float el eb mips1 mips3 soft-float/el soft-float/eb soft-float/mips1 soft-float/mips3 soft-float/el/mips1 soft-float/el/mips3 soft-float/eb/mips1 soft-float/eb/mips3 el/mips1 el/mips3 eb/mips1 eb/mips3"
 241         fi
 242         if [ x$enable_biendian = xno ]
 243         then
 244           old_multidirs="${multidirs}"
 245           multidirs=""
 246           for x in ${old_multidirs}; do
 247             case "$x" in
 248               *endian* ) : ;;
 249               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 250             esac
 251           done
 252         fi
 253         if [ x$enable_softfloat = xno ]
 254         then
 255           old_multidirs="${multidirs}"
 256           multidirs=""
 257           for x in ${old_multidirs}; do
 258             case "$x" in
 259               *soft-float* ) : ;;
 260               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 261             esac
 262           done
 263         fi
 264         if [ x$enable_relocatable = xno ]
 265         then
 266           old_multidirs="${multidirs}"
 267           multidirs=""
 268           for x in ${old_multidirs}; do
 269             case "$x" in
 270               *relocatable* ) : ;;
 271               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 272             esac
 273           done
 274         fi
 275         if [ x$enable_sysv = xno ]
 276         then
 277           old_multidirs="${multidirs}"
 278           multidirs=""
 279           for x in ${old_multidirs}; do
 280             case "$x" in
 281               *sysv* ) : ;;
 282               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 283             esac
 284           done
 285         fi
 286         ;;
 287 powerpc-ibm-aix* | rs6000-ibm-aix*)
 288         multidirs="soft-float common soft-float/common"
 289         if [ x$enable_softfloat = xno ]
 290         then
 291           old_multidirs="${multidirs}"
 292           multidirs=""
 293           for x in ${old_multidirs}; do
 294             case "$x" in
 295               *soft-float* ) : ;;
 296               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 297             esac
 298           done
 299         fi
 300         if [ x$enable_commoncpu = xno ]
 301         then
 302           old_multidirs="${multidirs}"
 303           multidirs=""
 304           for x in ${old_multidirs}; do
 305             case "$x" in
 306               *common* ) : ;;
 307               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 308             esac
 309           done
 310         fi
 311         ;;
 312 powerpc-*-eabiaix*)
 313         multidirs="soft-float relocatable little sysv little/sysv relocatable/little relocatable/sysv relocatable/little/sysv soft-float/relocatable soft-float/little soft-float/sysv soft-float/little/sysv soft-float/relocatable/little soft-float/relocatable/sysv soft-float/relocatable/little/sysv"
 314         if [ x$enable_biendian = xno ]
 315         then
 316           old_multidirs="${multidirs}"
 317           multidirs=""
 318           for x in ${old_multidirs}; do
 319             case "$x" in
 320               *endian* ) : ;;
 321               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 322             esac
 323           done
 324         fi
 325         if [ x$enable_softfloat = xno ]
 326         then
 327           old_multidirs="${multidirs}"
 328           multidirs=""
 329           for x in ${old_multidirs}; do
 330             case "$x" in
 331               *soft-float* ) : ;;
 332               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 333             esac
 334           done
 335         fi
 336         if [ x$enable_relocatable = xno ]
 337         then
 338           old_multidirs="${multidirs}"
 339           multidirs=""
 340           for x in ${old_multidirs}; do
 341             case "$x" in
 342               *relocatable* ) : ;;
 343               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 344             esac
 345           done
 346         fi
 347         if [ x$enable_sysv = xno ]
 348         then
 349           old_multidirs="${multidirs}"
 350           multidirs=""
 351           for x in ${old_multidirs}; do
 352             case "$x" in
 353               *sysv* ) : ;;
 354               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 355             esac
 356           done
 357         fi
 358         ;;
 359 powerpc-*-eabi* | powerpc-*-elf* | powerpc-*-sysv4*)
 360         multidirs="soft-float relocatable little aix little/aix relocatable/little relocatable/aix relocatable/little/aix soft-float/relocatable soft-float/little soft-float/aix soft-float/little/aix soft-float/relocatable/little soft-float/relocatable/aix soft-float/relocatable/little/aix aixdesc soft-float/aixdesc"
 361         if [ x$enable_biendian = xno ]
 362         then
 363           old_multidirs="${multidirs}"
 364           multidirs=""
 365           for x in ${old_multidirs}; do
 366             case "$x" in
 367               *endian* ) : ;;
 368               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 369             esac
 370           done
 371         fi
 372         if [ x$enable_softfloat = xno ]
 373         then
 374           old_multidirs="${multidirs}"
 375           multidirs=""
 376           for x in ${old_multidirs}; do
 377             case "$x" in
 378               *soft-float* ) : ;;
 379               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 380             esac
 381           done
 382         fi
 383         if [ x$enable_relocatable = xno ]
 384         then
 385           old_multidirs="${multidirs}"
 386           multidirs=""
 387           for x in ${old_multidirs}; do
 388             case "$x" in
 389               *relocatable* ) : ;;
 390               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 391             esac
 392           done
 393         fi
 394         if [ x$enable_aix = xno ]
 395         then
 396           old_multidirs="${multidirs}"
 397           multidirs=""
 398           for x in ${old_multidirs}; do
 399             case "$x" in
 400               *aix* ) : ;;
 401               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 402             esac
 403           done
 404         fi
 405         ;;
 406 powerpcle-*-eabi* | powerpcle-*-elf* | powerpcle-*-sysv4*)
 407         multidirs="soft-float relocatable big aix big/aix relocatable/big relocatable/aix relocatable/big/aix soft-float/relocatable soft-float/big soft-float/aix soft-float/big/aix soft-float/relocatable/big soft-float/relocatable/aix soft-float/relocatable/big/aix"
 408         if [ x$enable_biendian = xno ]
 409         then
 410           old_multidirs="${multidirs}"
 411           multidirs=""
 412           for x in ${old_multidirs}; do
 413             case "$x" in
 414               *endian* ) : ;;
 415               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 416             esac
 417           done
 418         fi
 419         if [ x$enable_softfloat = xno ]
 420         then
 421           old_multidirs="${multidirs}"
 422           multidirs=""
 423           for x in ${old_multidirs}; do
 424             case "$x" in
 425               *soft-float* ) : ;;
 426               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 427             esac
 428           done
 429         fi
 430         if [ x$enable_relocatable = xno ]
 431         then
 432           old_multidirs="${multidirs}"
 433           multidirs=""
 434           for x in ${old_multidirs}; do
 435             case "$x" in
 436               *relocatable* ) : ;;
 437               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 438             esac
 439           done
 440         fi
 441         if [ x$enable_aix = xno ]
 442         then
 443           old_multidirs="${multidirs}"
 444           multidirs=""
 445           for x in ${old_multidirs}; do
 446             case "$x" in
 447               *aix* ) : ;;
 448               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 449             esac
 450           done
 451         fi
 452         ;;
 453 *)
 454         multidirs=
 455         ;;
 456 esac
 457
 458 # Add code to library's top level makefile to handle building the multilib
 459 # subdirs.
 460
 461 cat > Multi.tem <<\EOF
 462
 463 # FIXME: There should be an @-sign in front of the `if'.
 464 # Leave out until this is tested a bit more.
 465 multi-do:
 466         if [ -z "$(MULTIDIRS)" ]; then \
 467           true; \
 468         else \
 469           rootpre=`pwd`/; export rootpre; \
 470           srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
 471           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 472           compiler="$(CC)"; \
 473           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 474             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 475             if [ "$${dir}" = "." ]; then \
 476               true; \
 477             else \
 478               if [ -d ../$${dir}/$${lib} ]; then \
 479                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 480                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 481                                 CFLAGS="$(CFLAGS) $${flags}" \
 482                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 483                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 484                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 485                                 $(DO)); then \
 486                   true; \
 487                 else \
 488                   exit 1; \
 489                 fi; \
 490               else true; \
 491               fi; \
 492             fi; \
 493           done; \
 494         fi
 495
 496 # FIXME: There should be an @-sign in front of the `if'.
 497 # Leave out until this is tested a bit more.
 498 multi-clean:
 499         if [ -z "$(MULTIDIRS)" ]; then \
 500           true; \
 501         else \
 502           lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 503           for dir in Makefile $(MULTIDIRS); do \
 504             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 505               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 506               then true; \
 507               else exit 1; \
 508               fi; \
 509             else true; \
 510             fi; \
 511           done; \
 512         fi
 513 EOF
 514
 515 cat ${Makefile} Multi.tem > Makefile.tem
 516 rm -f ${Makefile} Multi.tem
 517 mv Makefile.tem ${Makefile}
 518
 519 fi # ${ml_toplevel_p} = yes
 520
 521 if [ "${ml_verbose}" = --verbose ]; then
 522   echo "Adding multilib support to Makefile in `pwd`"
 523   if [ "${ml_toplevel_p}" = yes ]; then
 524     echo "multidirs=${multidirs}"
 525   fi
 526   echo "with_multisubdir=${with_multisubdir}"
 527 fi
 528
 529 if [ "${srcdir}" = "." ]; then
 530   if [ "${with_target_subdir}" != "." ]; then
 531     ml_srcdotdot="../"
 532   else
 533     ml_srcdotdot=""
 534   fi
 535 else
 536   ml_srcdotdot=""
 537 fi
 538
 539 if [ -z "${with_multisubdir}" ]; then
 540   ml_subdir=
 541   ml_builddotdot=
 542   : # ml_srcdotdot= # already set
 543 else
 544   ml_subdir="/${with_multisubdir}"
 545   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 546   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 547   if [ "$srcdir" = "." ]; then
 548     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 549   else
 550     : # ml_srcdotdot= # already set
 551   fi
 552 fi
 553
 554 if [ "${ml_toplevel_p}" = yes ]; then
 555   ml_do='$(MAKE)'
 556   ml_clean='$(MAKE)'
 557 else
 558   ml_do=true
 559   ml_clean=true
 560 fi
 561
 562 # TOP is used by newlib and should not be used elsewhere for this purpose.
 563 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 564 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 565 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 566 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 567 # of course.
 568 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 569 # and lists the subdirectories to recurse into.
 570 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 571 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 572 # a leading '/'.
 573 # MULTIDO is used for targets like all, install, and check where
 574 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 575 # MULTICLEAN is used for the *clean targets.
 576 #
 577 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 578 # currently kept separate because we don't want the *clean targets to require
 579 # the existence of the compiler (which MULTIDO currently requires) and
 580 # therefore we'd have to record the directory options as well as names
 581 # (currently we just record the names and use --print-multi-lib to get the
 582 # options).
 583
 584 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 585     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 586     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 587     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 588     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 589     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 590     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 591         ${Makefile} > Makefile.tem
 592 rm -f ${Makefile}
 593 mv Makefile.tem ${Makefile}
 594
 595 # If this is the library's top level, configure each multilib subdir.
 596 # This is done at the end because this is the loop that runs configure
 597 # in each multilib subdir and it seemed reasonable to finish updating the
 598 # Makefile before going on to configure the subdirs.
 599
 600 if [ "${ml_toplevel_p}" = yes ]; then
 601
 602 # We must freshly configure each subdirectory.  This bit of code is
 603 # actually partially stolen from the main configure script.  FIXME.
 604
 605 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 606
 607   if [ "${ml_verbose}" = --verbose ]; then
 608     echo "Running configure in multilib subdirs ${multidirs}"
 609     echo "pwd: `pwd`"
 610   fi
 611
 612   ml_origdir=`pwd`
 613   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 614   # cd to top-level-build-dir/${with_target_subdir}
 615   cd ..
 616
 617   for ml_dir in ${multidirs}; do
 618
 619     if [ "${ml_verbose}" = --verbose ]; then
 620       echo "Running configure in multilib subdir ${ml_dir}"
 621       echo "pwd: `pwd`"
 622     fi
 623
 624     if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
 625     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 626
 627     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 628     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 629
 630     case ${srcdir} in
 631     ".")
 632       echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
 633       if [ "${with_target_subdir}" != "." ]; then
 634         ml_unsubdir="../"
 635       else
 636         ml_unsubdir=""
 637       fi
 638       (cd ${ml_dir}/${ml_libdir};
 639        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 640       ml_newsrcdir="."
 641       ml_srcdiroption=
 642       multisrctop=${dotdot}
 643       ;;
 644     *)
 645       case "${srcdir}" in
 646       /*) # absolute path
 647         ml_newsrcdir=${srcdir}
 648         ;;
 649       *) # otherwise relative
 650         ml_newsrcdir=${dotdot}${srcdir}
 651         ;;
 652       esac
 653       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 654       multisrctop=
 655       ;;
 656     esac
 657
 658     case "${progname}" in
 659     /*)     ml_recprog=${progname} ;;
 660     *)      ml_recprog=${dotdot}${progname} ;;
 661     esac
 662
 663     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 664     ML_POPDIR=`pwd`
 665     cd ${ml_dir}/${ml_libdir}
 666
 667     if [ -f ${ml_newsrcdir}/configure ]; then
 668       ml_recprog=${ml_newsrcdir}/configure
 669     fi
 670     if eval ${ml_config_shell} ${ml_recprog} \
 671         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 672         ${ml_arguments} ${ml_srcdiroption} ; then
 673       true
 674     else
 675       exit 1
 676     fi
 677
 678     cd ${ML_POPDIR}
 679
 680   done
 681
 682   cd ${ml_origdir}
 683 fi
 684
 685 fi # ${ml_toplevel_p} = yes
 686 fi # ${enable_multilib} = yes