configure.in

   1 ##############################################################################
   2
   3 ## This file is a shell script fragment that supplies the information
   4 ## necessary to tailor a template configure script into the configure
   5 ## script appropriate for this directory.  For more information, check
   6 ## any existing configure script.
   7
   8 ## Be warned, there are two types of configure.in files.  There are those
   9 ## used by Autoconf, which are macros which are expanded into a configure
  10 ## script by autoconf.  The other sort, of which this is one, is executed
  11 ## by Cygnus configure.
  12
  13 ## For more information on these two systems, check out the documentation
  14 ## for 'Autoconf' (autoconf.texi) and 'Configure' (configure.texi).
  15
  16 ##############################################################################
  17
  18 ### To add a new directory to the tree, first choose whether it is a target
  19 ### or a host dependent tool.  Then put it into the appropriate list
  20 ### (library or tools, host or target), doing a dependency sort.  For
  21 ### example, gdb requires that byacc (or bison) be built first, so it is in
  22 ### the ${host_tools} list after byacc and bison.
  23
  24
  25 # these libraries are used by various programs built for the host environment
  26 #
  27 host_libs="mmalloc libiberty opcodes bfd readline gash tcl tk tclX"
  28
  29 if [ "${enable_gdbgui}" = "yes" ] ; then
  30         host_libs="${host_libs} libgui"
  31 fi
  32
  33 # these tools are built for the host environment
  34 #
  35 host_tools="texinfo byacc flex bison binutils ld gas gcc gdb make patch
  36             prms send-pr gprof gdbtest tgas etc expect dejagnu sim
  37             m4 autoconf ispell grep diff rcs cvs fileutils shellutils
  38             textutils wdiff find emacs emacs19 uudecode hello tar gzip indent
  39             recode release sed utils"
  40
  41
  42 # these libraries are built for the target environment, and are built after
  43 # the host libraries and the host tools (which may be a cross compiler)
  44 #
  45 target_libs="target-libiberty target-libgloss target-newlib target-libio target-librx target-libstdc++ target-libg++"
  46
  47
  48 # these tools are built using the target libs, and are intended to run only
  49 # in the target environment
  50 #
  51 # note: any program that *uses* libraries that are in the "target_libs"
  52 # list belongs in this list.  those programs are also very likely
  53 # candidates for the "native_only" list which follows
  54 #
  55 target_tools="target-examples target-groff"
  56
  57 ################################################################################
  58
  59 ## These two lists are of directories that are to be removed from the
  60 ## ${configdirs} list for either cross-compilations or for native-
  61 ## compilations.  For example, it doesn't make that much sense to
  62 ## cross-compile Emacs, nor is it terribly useful to compile target-libiberty in
  63 ## a native environment.
  64
  65 # directories to be built in the native environment only
  66 #
  67 native_only="autoconf cvs emacs emacs19 fileutils find grep gzip hello
  68              indent ispell m4 rcs recode sed shellutils tar textutils gash
  69              uudecode wdiff gprof target-groff"
  70
  71 # directories to be built in a cross environment only
  72 #
  73 cross_only="target-libiberty target-libgloss target-newlib"
  74
  75 ## All tools belong in one of the four categories, and are assigned above
  76 ## We assign ${configdirs} this way to remove all embedded newlines.  This
  77 ## is important because configure will choke if they ever get through.
  78 ## ${configdirs} is directories we build using the host tools.
  79 ## ${target_configdirs} is directories we build using the target tools.
  80 #
  81 configdirs=`echo ${host_libs} ${host_tools}`
  82 target_configdirs=`echo ${target_libs} ${target_tools}`
  83
  84 ################################################################################
  85
  86 srctrigger=move-if-change
  87 srcname="gnu development package"
  88
  89 # This gets set non-empty for some net releases of packages.
  90 appdirs=""
  91
  92 # per-host:
  93
  94 # Work in distributions that contain no compiler tools, like Autoconf.
  95 if [ -d ${srcdir}/config ]; then
  96 case "${host}" in
  97   m68k-hp-hpux*)          host_makefile_frag=config/mh-hp300 ;;
  98   m68k-apollo-sysv*)      host_makefile_frag=config/mh-apollo68 ;;
  99   m68k-apollo-bsd*)       host_makefile_frag=config/mh-a68bsd ;;
 100   m88k-dg-dgux*)          host_makefile_frag=config/mh-dgux ;;
 101   m88k-harris-cxux*)      host_makefile_frag=config/mh-cxux ;;
 102   m88k-motorola-sysv*)    host_makefile_frag=config/mh-delta88;;
 103   mips*-dec-ultrix*)      host_makefile_frag=config/mh-decstation ;;
 104   mips*-sgi-irix[56]*)    host_makefile_frag=config/mh-irix5 ;;
 105   mips*-sgi-irix4*)       host_makefile_frag=config/mh-irix4 ;;
 106   mips*-sgi-irix3*)       host_makefile_frag=config/mh-sysv ;;
 107   mips*-*-sysv4*)         host_makefile_frag=config/mh-sysv4 ;;
 108   mips*-*-sysv*)          host_makefile_frag=config/mh-riscos ;;
 109   i[345]86-ncr-sysv4.3)   host_makefile_frag=config/mh-ncrsvr43 ;;
 110   i[345]86-ncr-sysv4*)    host_makefile_frag=config/mh-ncr3000 ;;
 111   i[345]86-*-sco3.2v5*)   host_makefile_frag=config/mh-sysv ;;
 112   i[345]86-*-sco*)        host_makefile_frag=config/mh-sco ;;
 113   i[345]86-*-isc*)        host_makefile_frag=config/mh-sysv ;;
 114   i[345]86-*-linux*)      host_makefile_frag=config/mh-linux ;;
 115   i[345]86-*-solaris2*)   host_makefile_frag=config/mh-sysv4 ;;
 116   i[345]86-*-aix*)        host_makefile_frag=config/mh-aix386 ;;
 117   i[345]86-*-go32*)       host_makefile_frag=config/mh-go32 ;;
 118   vax-*-ultrix2*)         host_makefile_frag=config/mh-vaxult2 ;;
 119   *-*-solaris2*)          host_makefile_frag=config/mh-solaris ;;
 120   m68k-sun-sunos*)        host_makefile_frag=config/mh-sun3 ;;
 121   *-hp-hpux[78]*)         host_makefile_frag=config/mh-hpux8 ;;
 122   *-hp-hpux*)             host_makefile_frag=config/mh-hpux ;;
 123   *-*-hiux*)              host_makefile_frag=config/mh-hpux ;;
 124   rs6000-*-lynxos*)       host_makefile_frag=config/mh-lynxrs6k ;;
 125   *-*-lynxos*)            host_makefile_frag=config/mh-lynxos ;;
 126   *-*-sysv4*)             host_makefile_frag=config/mh-sysv4 ;;
 127   *-*-sysv*)              host_makefile_frag=config/mh-sysv ;;
 128 esac
 129 fi
 130
 131 # See if we can extract a definition of CC from the fragment.
 132 if [ -z "${CC}" ]; then
 133   if [ -n "${host_makefile_frag}" -a -f "${srcdir}/${host_makefile_frag}" ]; then
 134     xx=`sed -n -e 's/^[         ]*CC[   ]*=[    ]*\(.*\)$/\1/p' < ${srcdir}/${host_makefile_frag}`
 135     if [ -n "${xx}" ] ; then
 136       CC=$xx
 137     fi
 138   fi
 139 fi
 140
 141 # The Solaris /usr/ucb/cc compiler does not appear to work.
 142 case "${host}" in
 143   sparc-sun-solaris2*)
 144       if [ "`/usr/bin/which ${CC-cc}`" = "/usr/ucb/cc" ] ; then
 145           could_use=
 146           [ -d /opt/SUNWspro/bin ] && could_use="/opt/SUNWspro/bin"
 147           if [ -d /opt/cygnus/bin ] ; then
 148               if [ "$could_use" = "" ] ; then
 149                   could_use="/opt/cygnus/bin"
 150               else
 151                   could_use="$could_use or /opt/cygnus/bin"
 152               fi
 153           fi
 154         if [ "$could_use" = "" ] ; then
 155             echo "Warning: compilation may fail because you're using"
 156             echo "/usr/ucb/cc.  You should change your PATH or CC "
 157             echo "variable and rerun configure."
 158         else
 159             echo "Warning: compilation may fail because you're using"
 160             echo "/usr/ucb/cc, when you should use the C compiler from"
 161             echo "$could_use.  You should change your"
 162             echo "PATH or CC variable and rerun configure."
 163         fi
 164       fi
 165   ;;
 166 esac
 167
 168 # We default to --with-shared on platforms where -fpic is meaningless.
 169 # Well, we don't yet, but we will.
 170 if false && [ "${host}" = "${target}" ] && [ x${enable_shared} = x ]; then
 171   case "${target}" in
 172     alpha-dec-osf*)     enable_shared=yes ;;
 173     mips-sgi-irix5*)    enable_shared=yes ;;
 174     *)                  enable_shared=no ;;
 175   esac
 176 fi
 177
 178 if [ x${enable_shared} = xyes ]; then
 179   waugh=
 180   case "${host}" in
 181     hppa*)              waugh=config/mh-papic ;;
 182     i[345]86-*)         waugh=config/mh-x86pic ;;
 183     *)                  waugh=config/mh-${host_cpu}pic ;;
 184   esac
 185   if [ -f ${srcdir}/${waugh} ]; then
 186     if [ -n "${host_makefile_frag}" ] ; then
 187       cat ${srcdir}/${host_makefile_frag} > mh-frag
 188       cat ${srcdir}/${waugh} >> mh-frag
 189       host_makefile_frag=mh-frag
 190     else
 191       host_makefile_frag=${waugh}
 192     fi
 193   fi
 194 fi
 195
 196 # per-target:
 197
 198 case "${target}" in
 199   v810*)                target_makefile_frag=config/mt-v810 ;;
 200   i[345]86-*-netware*)  target_makefile_frag=config/mt-netware ;;
 201   powerpc-*-netware*)   target_makefile_frag=config/mt-netware ;;
 202 esac
 203
 204 skipdirs=
 205 gasdir=gas
 206 use_gnu_ld=
 207 use_gnu_as=
 208
 209 # some tools are so dependent upon X11 that if we're not building with X,
 210 # it's not even worth trying to configure, much less build, that tool.
 211
 212 case ${with_x} in
 213   yes | "")  # the default value for this tree is that X11 is available
 214         ;;
 215   no)
 216         skipdirs="${skipdirs} tk gash"
 217         ;;
 218   *)
 219         echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2
 220         ;;
 221 esac
 222
 223 # Some tools are only suitable for building in a "native" situation.
 224 # Those are added when we have a host==target configuration.  For cross
 225 # toolchains, we add some directories that should only be useful in a
 226 # cross-compiler.
 227
 228 is_cross_compiler=
 229
 230 if [ x"${host}" = x"${target}" ] ; then
 231         # when doing a native toolchain, don't build the targets
 232         # that are in the 'cross only' list
 233         skipdirs="${skipdirs} ${cross_only}"
 234         is_cross_compiler=no
 235         target_subdir=.
 236 else
 237         # similarly, don't build the targets in the 'native only'
 238         # list when building a cross compiler
 239         skipdirs="${skipdirs} ${native_only}"
 240         is_cross_compiler=yes
 241         target_subdir=${target_alias}
 242         if [ ! -d ${target_subdir} ] ; then
 243             if mkdir ${target_subdir} ; then true
 244             else
 245                 echo "'*** could not make ${PWD=`pwd`}/${target_subdir}" 1>&2
 246                 exit 1
 247             fi
 248         fi
 249 fi
 250
 251 copy_dirs=
 252
 253 # Handle --with-headers=XXX.  The contents of the named directory are
 254 # copied to $(tooldir)/sys-include.
 255 if [ x"${with_headers}" != x ]; then
 256   if [ x${is_cross_compiler} = xno ]; then
 257     echo 1>&2 '***' --with-headers is only supported when cross compiling
 258     exit 1
 259   fi
 260   case "${exec_prefixoption}" in
 261   "") x=${prefix} ;;
 262   *) x=${exec_prefix} ;;
 263   esac
 264   copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/sys-include"
 265 fi
 266
 267 # Handle --with-libs=XXX.  Multiple directories are permitted.  The
 268 # contents are copied to $(tooldir)/lib.
 269 if [ x"${with_libs}" != x ]; then
 270   if [ x${is_cross_compiler} = xno ]; then
 271     echo 1>&2 '***' --with-libs is only supported when cross compiling
 272     exit 1
 273   fi
 274   # Copy the libraries in reverse order, so that files in the first named
 275   # library override files in subsequent libraries.
 276   case "${exec_prefixoption}" in
 277   "") x=${prefix} ;;
 278   *) x=${exec_prefix} ;;
 279   esac
 280   for l in ${with_libs}; do
 281     copy_dirs="$l $x/${target_alias}/lib ${copy_dirs}"
 282   done
 283 fi
 284
 285 # If both --with-headers and --with-libs are specified, default to
 286 # --without-newlib.
 287 if [ x"${with_headers}" != x ] && [ x"${with_libs}" != x ]; then
 288   if [ x"${with_newlib}" = x ]; then
 289     with_newlib=no
 290   fi
 291 fi
 292
 293 # Recognize --with-newlib/--without-newlib.
 294 if [ x${with_newlib} = xno ]; then
 295   skipdirs="${skipdirs} target-newlib"
 296 elif [ x${with_newlib} = xyes ]; then
 297   skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 298 fi
 299
 300 # Default to using --with-stabs for certain targets.
 301 if [ x${with_stabs} = x ]; then
 302   case "${target}" in
 303   mips*-*-* | alpha*-*-osf* | i[345]86*-*-sysv4* | i[345]86*-*-unixware*)
 304     with_stabs=yes;
 305     withoptions="${withoptions} --with-stabs"
 306     ;;
 307   esac
 308 fi
 309
 310 # Handle ${copy_dirs}
 311 set fnord ${copy_dirs}
 312 shift
 313 while [ $# != 0 ]; do
 314   if [ -f $2/COPIED ] && [ x"`cat $2/COPIED`" = x"$1" ]; then
 315     :
 316   else
 317     echo Copying $1 to $2
 318
 319     # Use the install script to create the directory and all required
 320     # parent directories.
 321     if [ -d $2 ]; then
 322       :
 323     else
 324       echo >config.temp
 325       ${srcdir}/install.sh -c -m 644 config.temp $2/COPIED
 326     fi
 327
 328     # Copy the directory, assuming we have tar.
 329     # FIXME: Should we use B in the second tar?  Not all systems support it.
 330     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
 331
 332     # It is the responsibility of the user to correctly adjust all
 333     # symlinks.  If somebody can figure out how to handle them correctly
 334     # here, feel free to add the code.
 335
 336     echo $1 > $2/COPIED
 337   fi
 338   shift; shift
 339 done
 340
 341 # Configure extra directories which are host specific
 342
 343 case "${host}" in
 344         i[345]86-*-go32*)
 345           configdirs="$configdirs dosrel" ;;
 346 esac
 347
 348 # Remove more programs from consideration, based on the host or
 349 # target this usually means that a port of the program doesn't
 350 # exist yet.
 351
 352 noconfigdirs=""
 353
 354 case "${host}" in
 355   i[345]86-*-vsta)
 356     noconfigdirs="tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff"
 357     ;;
 358   i[345]86-*-go32)
 359     noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff"
 360         ;;
 361   *-*-cygwin32)
 362      noconfigdirs="patch diff make tk tcl expect dejagnu cvs autoconf texinfo bison send-pr gprof rcs"
 363     ;;
 364   ppc*-*-pe)
 365      noconfigdirs="patch diff  make tk tcl expect dejagnu cvs autoconf texinfo bison send-pr gprof rcs"
 366     ;;
 367 esac
 368
 369
 370 case "${target}" in
 371   *-*-netware)
 372     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-librx target-newlib target-libiberty"
 373     ;;
 374   *-*-vxworks*)
 375     noconfigdirs="$noconfigdirs target-newlib"
 376     ;;
 377   alpha-dec-osf*)
 378     # ld works, but does not support shared libraries.  emacs doesn't
 379     # work.  newlib is not 64 bit ready.  I'm not sure about fileutils or grep.
 380     # gas doesn't generate exception information.
 381     noconfigdirs="$noconfigdirs gas ld emacs fileutils grep target-newlib"
 382     ;;
 383   alpha*-*-*)
 384     # newlib is not 64 bit ready
 385     noconfigdirs="$noconfigdirs target-newlib"
 386     ;;
 387 # start-sanitize-arc
 388   arc-*-*)
 389     ;;
 390 # end-sanitize-arc
 391   arm-*-pe*)
 392     ;;
 393   arm-*-riscix*)
 394     noconfigdirs="$noconfigdirs ld"
 395     ;;
 396   h8300*-*-* | \
 397   h8500-*-*)
 398     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx"
 399     ;;
 400   hppa*-*-*elf* | \
 401   hppa*-*-lites*)
 402     # Do configure ld/binutils/gas for this case.
 403     ;;
 404   hppa*-*-*)
 405     # HP's C compiler doesn't handle Emacs correctly (but on BSD and Mach
 406     # cc is gcc, and on any system a user should be able to link cc to
 407     # whatever they want.  FIXME, emacs emacs19).
 408     case "${CC}" in
 409         "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
 410         *) ;;
 411     esac
 412     noconfigdirs="$noconfigdirs ld shellutils"
 413     ;;
 414   i[345]86-*-go32)
 415     # but don't build gdb
 416     noconfigdirs="$noconfigdirs gdb target-libg++ target-libstdc++ target-libio target-librx"
 417     ;;
 418   *-*-cygwin32)
 419
 420     # make/glob's configure uses some AC_TRY_RUN type tests
 421     target_configdirs="$target_configdirs target-winsup"
 422     noconfigdirs="$noconfigdirs tcl tk expect make"
 423     # always build newlib.
 424     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 425
 426     # Can't build gdb for cygwin32 if not native.
 427     case "${host}" in
 428       *-*-cygwin32) ;; # keep gdb
 429       *) noconfigdirs="$noconfigdirs gdb"
 430     esac
 431
 432     ;;
 433   i[345]86-*-pe)
 434     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx"
 435     ;;
 436   i[345]86-*-sco3.2v5*)
 437     # The linker does not yet know about weak symbols in COFF,
 438     # and is not configured to handle mixed ELF and COFF.
 439     noconfigdirs="$noconfigdirs gprof ld"
 440     ;;
 441   i[345]86-*-sco*)
 442     noconfigdirs="$noconfigdirs gprof"
 443     ;;
 444   i[345]86-*-solaris2*)
 445     # The linker does static linking correctly, but the Solaris C library
 446     # has bugs such that some important functions won't work when statically
 447     # linked.  (See man pages for getpwuid, for example.)
 448     noconfigdirs="$noconfigdirs ld"
 449     ;;
 450   i[345]86-*-sysv4*)
 451     # The SYSV4 C compiler doesn't handle Emacs correctly
 452     case "${CC}" in
 453         "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
 454         *) ;;
 455     esac
 456     # but that's okay since emacs doesn't work anyway
 457     noconfigdirs="$noconfigdirs emacs emacs19"
 458     ;;
 459   powerpc-*-aix*)
 460     # copied from rs6000-*-* entry
 461     noconfigdirs="$noconfigdirs gprof cvs"
 462     ;;
 463   powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
 464     target_configdirs="$target_configdirs target-winsup"
 465     noconfigdirs="$noconfigdirs gdb tcl tk make expect"
 466     # always build newlib.
 467     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 468     ;;
 469   rs6000-*-lynxos*)
 470     # The CVS server code doesn't work on the RS/6000
 471     # Newlib makes problems for libg++ in crosses.
 472     noconfigdirs="$noconfigdirs target-newlib gprof cvs"
 473     ;;
 474   rs6000-*-*)
 475     noconfigdirs="$noconfigdirs gprof"
 476     ;;
 477   m68k-*-netbsd*)
 478     noconfigdirs="$noconfigdirs gdb"
 479     ;;
 480   m68k-apollo-*)
 481     noconfigdirs="$noconfigdirs ld binutils gprof"
 482     ;;
 483   mips*-*-irix5*)
 484     # The GNU linker does not support shared libraries.
 485     # emacs is emacs 18, which does not work on Irix 5 (emacs19 does work)
 486     noconfigdirs="$noconfigdirs ld gprof emacs"
 487     ;;
 488   mips*-dec-bsd*)
 489     noconfigdirs="$noconfigdirs gprof"
 490     ;;
 491   mips*-*-bsd*)
 492     noconfigdirs="$noconfigdirs gprof"
 493     ;;
 494   mips*-*-*)
 495     noconfigdirs="$noconfigdirs gprof"
 496     ;;
 497   romp-*-*)
 498     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes"
 499     ;;
 500   sh-*-*)
 501     case "${host}" in
 502       i[345]86-*-vsta) ;; # don't add gprof back in
 503       i[345]86-*-go32) ;; # don't add gprof back in
 504       *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
 505     esac
 506     ;;
 507   sparc-*-sunos4*)
 508     if [ x${is_cross_compiler} != xno ] ; then
 509            noconfigdirs="$noconfigdirs gdb gdbtest target-newlib"
 510     else
 511            use_gnu_ld=no
 512     fi
 513     ;;
 514   v810-*-*)
 515     noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libio target-libg++ target-libstdc++ opcodes"
 516     ;;
 517   vax-*-vms)
 518     noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes"
 519     ;;
 520   vax-*-*)
 521     noconfigdirs="$noconfigdirs target-newlib"
 522     ;;
 523   *-*-lynxos*)
 524     # Newlib makes problems for libg++ in crosses.
 525     noconfigdirs="$noconfigdirs target-newlib"
 526     ;;
 527   *-*-macos* | \
 528   *-*-mpw*)
 529     # Macs want a resource compiler.
 530     configdirs="$configdirs grez"
 531     ;;
 532 esac
 533
 534 targets that need a second pass
 535 case "${target}" in
 536   *-gm-magic*)
 537     noconfigdirs="$noconfigdirs libgloss"
 538     ;;
 539 esac
 540
 541 # If we are building a Canadian Cross, discard tools that can not be built
 542 # using a cross compiler.  FIXME: These tools should be fixed.
 543 if [ "${build}" != "${host}" ]; then
 544   noconfigdirs="$noconfigdirs expect dejagnu make texinfo diff"
 545 fi
 546
 547 # Make sure we don't let GNU ld be added if we didn't want it.
 548 if [ x$with_gnu_ld = xno ]; then
 549   use_gnu_ld=no
 550   noconfigdirs="$noconfigdirs ld"
 551 fi
 552
 553 # Make sure we don't let GNU as be added if we didn't want it.
 554 if [ x$with_gnu_as = xno ]; then
 555   use_gnu_as=no
 556   noconfigdirs="$noconfigdirs gas"
 557 fi
 558
 559 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs and
 560 # $target_configdirs.
 561 # If we have the source for $noconfigdirs entries, add them to $notsupp.
 562
 563 notsupp=""
 564 for dir in . $skipdirs $noconfigdirs ; do
 565   dirname=`echo $dir | sed -e s/target-//g`
 566   if [ $dir != . ]  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 567     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
 568     if [ -r $srcdir/$dirname/configure ] \
 569         || [ -r $srcdir/$dirname/configure.in ]; then
 570       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 571         true
 572       else
 573         notsupp="$notsupp $dir"
 574       fi
 575     fi
 576   fi
 577   if [ $dir != . ]  && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 578     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
 579     if [ -r $srcdir/$dirname/configure ] \
 580         || [ -r $srcdir/$dirname/configure.in ]; then
 581       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 582         true
 583       else
 584         notsupp="$notsupp $dir"
 585       fi
 586     fi
 587   fi
 588 done
 589
 590 # Sometimes the tools are distributed with libiberty but with no other
 591 # libraries.  In that case, we don't want to build target-libiberty.
 592 if [ -n "${target_configdirs}" ]; then
 593   others=
 594   for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
 595     if [ "$i" != "libiberty" ]; then
 596       if [ -r $srcdir/$i/configure ] || [ -r $srcdir/$i/configure.in ]; then
 597         others=yes;
 598         break;
 599       fi
 600     fi
 601   done
 602   if [ -z "${others}" ]; then
 603     target_configdirs=
 604   fi
 605 fi
 606
 607 # Deconfigure all subdirectories, in case we are changing the
 608 # configuration from one where a subdirectory is supported to one where it
 609 # is not.
 610 if [ -z "${norecursion}" -a -n "${configdirs}" ]; then
 611   for i in `echo ${configdirs} | sed -e s/target-//g` ; do
 612     rm -f $i/Makefile
 613   done
 614 fi
 615 if [ -z "${norecursion}" -a -n "${target_configdirs}" ]; then
 616   for i in `echo ${target_configdirs} | sed -e s/target-//` ; do
 617     rm -f ${target_subdir}/$i/Makefile
 618   done
 619 fi
 620
 621 # Produce a warning message for the subdirs we can't configure.
 622 # This isn't especially interesting in the Cygnus tree, but in the individual
 623 # FSF releases, it's important to let people know when their machine isn't
 624 # supported by the one or two programs in a package.
 625
 626 if [ -n "${notsupp}" ] && [ -z "${norecursion}" ]; then
 627   # If $appdirs is non-empty, at least one of those directories must still
 628   # be configured, or we error out.  (E.g., if the gas release supports a
 629   # specified target in some subdirs but not the gas subdir, we shouldn't
 630   # pretend that all is well.)
 631   if [ -n "$appdirs" ]; then
 632     for dir in $appdirs ; do
 633       if [ -r $dir/Makefile.in ]; then
 634         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 635           appdirs=""
 636           break
 637         fi
 638         if echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 639           appdirs=""
 640           break
 641         fi
 642       fi
 643     done
 644     if [ -n "$appdirs" ]; then
 645       echo "*** This configuration is not supported by this package." 1>&2
 646       exit 1
 647     fi
 648   fi
 649   # Okay, some application will build, or we don't care to check.  Still
 650   # notify of subdirs not getting built.
 651   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
 652   echo "    ${notsupp}" 1>&2
 653   echo "    (Any other directories should still work fine.)" 1>&2
 654 fi
 655
 656 # Set with_gnu_as and with_gnu_ld as appropriate.
 657 #
 658 # This is done by determining whether or not the appropriate directory
 659 # is available, and by checking whether or not specific configurations
 660 # have requested that this magic not happen.
 661 #
 662 # The command line options always override the explicit settings in
 663 # configure.in, and the settings in configure.in override this magic.
 664 #
 665 # If the default for a toolchain is to use GNU as and ld, and you don't
 666 # want to do that, then you should use the --without-gnu-as and
 667 # --without-gnu-ld options for the configure script.
 668
 669 if [ x${use_gnu_as} = x ] ; then
 670   if [ x${with_gnu_as} != xno ] && echo " ${configdirs} " | grep " ${gasdir} " > /dev/null 2>&1 && [ -d ${srcdir}/${gasdir} ] ; then
 671     with_gnu_as=yes
 672     withoptions="$withoptions --with-gnu-as"
 673   fi
 674 fi
 675
 676 if [ x${use_gnu_ld} = x ] ; then
 677   if [ x${with_gnu_ld} != xno ] && echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 && [ -d ${srcdir}/ld ] ; then
 678     with_gnu_ld=yes
 679     withoptions="$withoptions --with-gnu-ld"
 680   fi
 681 fi
 682
 683 if [ x${enable_shared} = xyes ]; then
 684   case "${target}" in
 685     hppa*)              target_makefile_frag=config/mt-papic ;;
 686     i[345]86-*)         target_makefile_frag=config/mt-x86pic ;;
 687     *)                  target_makefile_frag=config/mt-${target_cpu}pic ;;
 688   esac
 689 fi
 690
 691 # post-target:
 692
 693 # Make sure that the compiler is able to generate an executable.  If it
 694 # can't, we are probably in trouble.  We don't care whether we can run the
 695 # executable--we might be using a cross compiler--we only care whether it
 696 # can be created.  At this point the main configure script has set CC.
 697 echo "int main () { return 0; }" > conftest.c
 698 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
 699 if [ $? = 0 ] && [ -s conftest ]; then
 700   :
 701 else
 702   echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
 703   echo 1>&2 "*** You must set the environment variable CC to a working compiler."
 704   rm -f conftest*
 705   exit 1
 706 fi
 707 rm -f conftest*
 708
 709 # Record target_configdirs and the configure arguments in Makefile.
 710 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
 711 targargs=`echo "${arguments}" | \
 712         sed -e 's/--norecursion//' \
 713             -e 's/--cache[a-z-]*=[^     ]*//' \
 714             -e 's/--ho[a-z-]*=[^        ]*//' \
 715             -e 's/--ta[a-z-]*=[^        ]*//'`
 716
 717 # Passing a --with-cross-host argument lets the target libraries know
 718 # whether they are being built with a cross-compiler or being built
 719 # native.  However, it would be better to use other mechanisms to make the
 720 # sorts of decisions they want to make on this basis.  Please consider
 721 # this option to be deprecated.  FIXME.
 722 if [ x${is_cross_compiler} = xyes ]; then
 723   targargs="--with-cross-host=${host_alias} ${targargs}"
 724 fi
 725
 726 targargs="--host=${target_alias} ${targargs}"
 727 sed -e "s:^TARGET_CONFIGDIRS[   ]*=.*$:TARGET_CONFIGDIRS = ${target_configdirs}:" \
 728     -e "s%^CONFIG_ARGUMENTS[    ]*=.*$%CONFIG_ARGUMENTS = ${targargs}%" \
 729     -e "s%^TARGET_SUBDIR[       ]*=.*$%TARGET_SUBDIR = ${target_subdir}%" \
 730        Makefile > Makefile.tem
 731 rm -f Makefile
 732 mv -f Makefile.tem Makefile
 733
 734 #
 735 # Local Variables:
 736 # fill-column: 131
 737 # End:
 738 #