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-*-sco*)        host_makefile_frag=config/mh-sco ;;
 112   i[345]86-*-isc*)        host_makefile_frag=config/mh-sysv ;;
 113   i[345]86-*-linux*)      host_makefile_frag=config/mh-linux ;;
 114   i[345]86-*-solaris2*)   host_makefile_frag=config/mh-sysv4 ;;
 115   i[345]86-*-aix*)        host_makefile_frag=config/mh-aix386 ;;
 116   i[345]86-*-go32*)       host_makefile_frag=config/mh-go32 ;;
 117   i[345]86-*-win32)       host_makefile_frag=config/mh-i386win32 ;;
 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-*-win32* | 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   i[345]86-*-win32)
 362      noconfigdirs="patch diff flex make tk tcl expect dejagnu cvs autoconf texinfo bison send-pr gprof rcs"
 363     ;;
 364 esac
 365
 366
 367 case "${target}" in
 368   *-*-netware)
 369     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-librx target-newlib target-libiberty"
 370     ;;
 371   *-*-vxworks5.1)
 372     noconfigdirs="$noconfigdirs target-newlib"
 373     ;;
 374   alpha-dec-osf*)
 375     # ld works, but does not support shared libraries.  emacs doesn't
 376     # work.  newlib is not 64 bit ready.  I'm not sure about fileutils or grep.
 377     noconfigdirs="$noconfigdirs ld emacs fileutils grep target-newlib"
 378     ;;
 379   alpha*-*-*)
 380     # newlib is not 64 bit ready
 381     noconfigdirs="$noconfigdirs target-newlib"
 382     ;;
 383 # start-sanitize-arc
 384   arc-*-*)
 385     ;;
 386 # end-sanitize-arc
 387 # start-sanitize-psion
 388   arm-*-pe*)
 389     ;;
 390 # end-sanitize-psion
 391   arm-*-riscix*)
 392     noconfigdirs="$noconfigdirs ld"
 393     ;;
 394   h8300*-*-* | \
 395   h8500-*-*)
 396     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx"
 397     ;;
 398   hppa*-*-*elf* | \
 399   hppa*-*-lites*)
 400     # Do configure ld/binutils/gas for this case.
 401     ;;
 402   hppa*-*-*)
 403     # HP's C compiler doesn't handle Emacs correctly (but on BSD and Mach
 404     # cc is gcc, and on any system a user should be able to link cc to
 405     # whatever they want.  FIXME, emacs emacs19).
 406     case "${CC}" in
 407         "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
 408         *) ;;
 409     esac
 410     noconfigdirs="$noconfigdirs ld shellutils"
 411     ;;
 412   i[345]86-*-go32)
 413     # but don't build gdb
 414     noconfigdirs="$noconfigdirs gdb target-libg++ target-libstdc++ target-libio target-librx"
 415     ;;
 416
 417   i[345]86-*-win32)
 418     # Can't build gdb for win32 if not native.
 419     # make/glob's configure uses some AC_TRY_RUN type tests
 420     target_configdirs="$target_configdirs target-winsup"
 421     if [ x${is_cross_compiler} = xyes ]; then
 422             noconfigdirs="$noconfigdirs gdb tk make"
 423     fi
 424     # always build newlib.
 425     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 426     ;;
 427   i[345]86-*-pe)
 428     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx"
 429     ;;
 430   i[345]86-*-sco*)
 431     noconfigdirs="$noconfigdirs gprof"
 432     ;;
 433   i[345]86-*-solaris2*)
 434     # The linker does static linking correctly, but the Solaris C library
 435     # has bugs such that some important functions won't work when statically
 436     # linked.  (See man pages for getpwuid, for example.)
 437     noconfigdirs="$noconfigdirs ld"
 438     ;;
 439   i[345]86-*-sysv4*)
 440     # The SYSV4 C compiler doesn't handle Emacs correctly
 441     case "${CC}" in
 442         "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
 443         *) ;;
 444     esac
 445     # but that's okay since emacs doesn't work anyway
 446     noconfigdirs="$noconfigdirs emacs emacs19"
 447     ;;
 448 # start-sanitize-jaguar
 449   jaguar-*-*)
 450     ;;
 451 # end-sanitize-jaguar
 452   powerpc-*-aix*)
 453     # copied from rs6000-*-* entry
 454     noconfigdirs="$noconfigdirs gprof cvs"
 455     ;;
 456   powerpc*-*-winnt* | powerpc*-*-pe*)
 457     noconfigdirs="$noconfigdirs gdb"
 458     ;;
 459   rs6000-*-lynxos*)
 460     # The CVS server code doesn't work on the RS/6000
 461     # Newlib makes problems for libg++ in crosses.
 462     noconfigdirs="$noconfigdirs target-newlib gprof cvs"
 463     ;;
 464   rs6000-*-*)
 465     noconfigdirs="$noconfigdirs gprof"
 466     ;;
 467   m68k-*-netbsd*)
 468     noconfigdirs="$noconfigdirs gdb"
 469     ;;
 470   m68k-apollo-*)
 471     noconfigdirs="$noconfigdirs ld binutils gprof"
 472     ;;
 473   mips*-*-irix5*)
 474     # The GNU linker does not support shared libraries.
 475     # emacs is emacs 18, which does not work on Irix 5 (emacs19 does work)
 476     noconfigdirs="$noconfigdirs ld gprof emacs"
 477     ;;
 478   mips*-dec-bsd*)
 479     noconfigdirs="$noconfigdirs gprof"
 480     ;;
 481   mips*-*-bsd*)
 482     noconfigdirs="$noconfigdirs gprof"
 483     ;;
 484   mips*-*-*)
 485     noconfigdirs="$noconfigdirs gprof"
 486     ;;
 487   romp-*-*)
 488     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes"
 489     ;;
 490   sh-*-*)
 491     case "${host}" in
 492       i[345]86-*-vsta) ;; # don't add gprof back in
 493       i[345]86-*-go32) ;; # don't add gprof back in
 494       *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
 495     esac
 496     ;;
 497   sparc-*-sunos4*)
 498     if [ x${is_cross_compiler} != xno ] ; then
 499            noconfigdirs="$noconfigdirs gdb gdbtest target-newlib"
 500     else
 501            use_gnu_ld=no
 502     fi
 503     ;;
 504   v810-*-*)
 505     noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libg++ target-libstdc++ opcodes"
 506     ;;
 507   vax-*-vms)
 508     noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes"
 509     ;;
 510   vax-*-*)
 511     noconfigdirs="$noconfigdirs target-newlib"
 512     ;;
 513   *-*-lynxos*)
 514     # Newlib makes problems for libg++ in crosses.
 515     noconfigdirs="$noconfigdirs target-newlib"
 516     ;;
 517   *-*-macos* | \
 518   *-*-mpw*)
 519     # Macs want a resource compiler.
 520     configdirs="$configdirs grez"
 521     ;;
 522 esac
 523
 524 # If we are building a Canadian Cross, discard tools that can not be built
 525 # using a cross compiler.  FIXME: These tools should be fixed.
 526 if [ "${build}" != "${host}" ]; then
 527   noconfigdirs="$noconfigdirs expect dejagnu make texinfo diff"
 528 fi
 529
 530 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs and
 531 # $target_configdirs.
 532 # If we have the source for $noconfigdirs entries, add them to $notsupp.
 533
 534 notsupp=""
 535 for dir in . $skipdirs $noconfigdirs ; do
 536   dirname=`echo $dir | sed -e s/target-//g`
 537   if [ $dir != . ]  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 538     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
 539     if [ -r $srcdir/$dirname/configure ] \
 540         || [ -r $srcdir/$dirname/configure.in ]; then
 541       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 542         true
 543       else
 544         notsupp="$notsupp $dir"
 545       fi
 546     fi
 547   fi
 548   if [ $dir != . ]  && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 549     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
 550     if [ -r $srcdir/$dirname/configure ] \
 551         || [ -r $srcdir/$dirname/configure.in ]; then
 552       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 553         true
 554       else
 555         notsupp="$notsupp $dir"
 556       fi
 557     fi
 558   fi
 559 done
 560
 561 # Sometimes the tools are distributed with libiberty but with no other
 562 # libraries.  In that case, we don't want to build target-libiberty.
 563 if [ -n "${target_configdirs}" ]; then
 564   others=
 565   for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
 566     if [ "$i" != "libiberty" ]; then
 567       if [ -r $srcdir/$i/configure ] || [ -r $srcdir/$i/configure.in ]; then
 568         others=yes;
 569         break;
 570       fi
 571     fi
 572   done
 573   if [ -z "${others}" ]; then
 574     target_configdirs=
 575   fi
 576 fi
 577
 578 # Deconfigure all subdirectories, in case we are changing the
 579 # configuration from one where a subdirectory is supported to one where it
 580 # is not.
 581 if [ -z "${norecursion}" -a -n "${configdirs}" ]; then
 582   for i in `echo ${configdirs} | sed -e s/target-//g` ; do
 583     rm -f $i/Makefile
 584   done
 585 fi
 586 if [ -z "${norecursion}" -a -n "${target_configdirs}" ]; then
 587   for i in `echo ${target_configdirs} | sed -e s/target-//` ; do
 588     rm -f ${target_subdir}/$i/Makefile
 589   done
 590 fi
 591
 592 # Produce a warning message for the subdirs we can't configure.
 593 # This isn't especially interesting in the Cygnus tree, but in the individual
 594 # FSF releases, it's important to let people know when their machine isn't
 595 # supported by the one or two programs in a package.
 596
 597 if [ -n "${notsupp}" ] && [ -z "${norecursion}" ]; then
 598   # If $appdirs is non-empty, at least one of those directories must still
 599   # be configured, or we error out.  (E.g., if the gas release supports a
 600   # specified target in some subdirs but not the gas subdir, we shouldn't
 601   # pretend that all is well.)
 602   if [ -n "$appdirs" ]; then
 603     for dir in $appdirs ; do
 604       if [ -r $dir/Makefile.in ]; then
 605         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 606           appdirs=""
 607           break
 608         fi
 609         if echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 610           appdirs=""
 611           break
 612         fi
 613       fi
 614     done
 615     if [ -n "$appdirs" ]; then
 616       echo "*** This configuration is not supported by this package." 1>&2
 617       exit 1
 618     fi
 619   fi
 620   # Okay, some application will build, or we don't care to check.  Still
 621   # notify of subdirs not getting built.
 622   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
 623   echo "    ${notsupp}" 1>&2
 624   echo "    (Any other directories should still work fine.)" 1>&2
 625 fi
 626
 627 # Set with_gnu_as and with_gnu_ld as appropriate.
 628 #
 629 # This is done by determining whether or not the appropriate directory
 630 # is available, and by checking whether or not specific configurations
 631 # have requested that this magic not happen.
 632 #
 633 # The command line options always override the explicit settings in
 634 # configure.in, and the settings in configure.in override this magic.
 635 #
 636 # If the default for a toolchain is to use GNU as and ld, and you don't
 637 # want to do that, then you should use the --without-gnu-as and
 638 # --without-gnu-ld options for the configure script.
 639
 640 if [ x${use_gnu_as} = x ] ; then
 641   if [ x${with_gnu_as} != xno ] && echo " ${configdirs} " | grep " ${gasdir} " > /dev/null 2>&1 && [ -d ${srcdir}/${gasdir} ] ; then
 642     with_gnu_as=yes
 643     withoptions="$withoptions --with-gnu-as"
 644   fi
 645 fi
 646
 647 if [ x${use_gnu_ld} = x ] ; then
 648   if [ x${with_gnu_ld} != xno ] && echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 && [ -d ${srcdir}/ld ] ; then
 649     with_gnu_ld=yes
 650     withoptions="$withoptions --with-gnu-ld"
 651   fi
 652 fi
 653
 654 if [ x${enable_shared} = xyes ]; then
 655   case "${target}" in
 656     hppa*)              target_makefile_frag=config/mt-papic ;;
 657     i[345]86-*)         target_makefile_frag=config/mt-x86pic ;;
 658     *)                  target_makefile_frag=config/mt-${target_cpu}pic ;;
 659   esac
 660 fi
 661
 662 # post-target:
 663
 664 # Record target_configdirs and the configure arguments in Makefile.
 665 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
 666 targargs=`echo "${arguments}" | \
 667         sed -e 's/--norecursion//' \
 668             -e 's/--cache[a-z-]*=[^     ]*//' \
 669             -e 's/--ho[a-z-]*=[^        ]*//' \
 670             -e 's/--ta[a-z-]*=[^        ]*//'`
 671
 672 # Passing a --with-cross-host argument lets the target libraries know
 673 # whether they are being built with a cross-compiler or being built
 674 # native.  However, it would be better to use other mechanisms to make the
 675 # sorts of decisions they want to make on this basis.  Please consider
 676 # this option to be deprecated.  FIXME.
 677 if [ x${is_cross_compiler} = xyes ]; then
 678   targargs="--with-cross-host=${host_alias} ${targargs}"
 679 fi
 680
 681 targargs="--host=${target_alias} ${targargs}"
 682 sed -e "s:^TARGET_CONFIGDIRS[   ]*=.*$:TARGET_CONFIGDIRS = ${target_configdirs}:" \
 683     -e "s%^CONFIG_ARGUMENTS[    ]*=.*$%CONFIG_ARGUMENTS = ${targargs}%" \
 684     -e "s%^TARGET_SUBDIR[       ]*=.*$%TARGET_SUBDIR = ${target_subdir}%" \
 685        Makefile > Makefile.tem
 686 rm -f Makefile
 687 mv -f Makefile.tem Makefile
 688
 689 #
 690 # Local Variables:
 691 # fill-column: 131
 692 # End:
 693 #