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 guile perl apache"
  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 guile perl apache"
  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   m68k-*-linux*)          host_makefile_frag=config/mh-linux ;;
 101   m88k-dg-dgux*)          host_makefile_frag=config/mh-dgux ;;
 102   m88k-harris-cxux*)      host_makefile_frag=config/mh-cxux ;;
 103   m88k-motorola-sysv*)    host_makefile_frag=config/mh-delta88;;
 104   mips*-dec-ultrix*)      host_makefile_frag=config/mh-decstation ;;
 105   mips*-nec-sysv4*)       host_makefile_frag=config/mh-necv4 ;;
 106   mips*-sgi-irix[56]*)    host_makefile_frag=config/mh-irix5 ;;
 107   mips*-sgi-irix4*)       host_makefile_frag=config/mh-irix4 ;;
 108   mips*-sgi-irix3*)       host_makefile_frag=config/mh-sysv ;;
 109   mips*-*-sysv4*)         host_makefile_frag=config/mh-sysv4 ;;
 110   mips*-*-sysv*)          host_makefile_frag=config/mh-riscos ;;
 111   i[345]86-ncr-sysv4.3)   host_makefile_frag=config/mh-ncrsvr43 ;;
 112   i[345]86-ncr-sysv4*)    host_makefile_frag=config/mh-ncr3000 ;;
 113   i[345]86-*-sco3.2v5*)   host_makefile_frag=config/mh-sysv ;;
 114   i[345]86-*-sco*)        host_makefile_frag=config/mh-sco ;;
 115   i[345]86-*-isc*)        host_makefile_frag=config/mh-sysv ;;
 116   i[345]86-*-linux*)      host_makefile_frag=config/mh-linux ;;
 117   i[345]86-*-solaris2*)   host_makefile_frag=config/mh-sysv4 ;;
 118   i[345]86-*-aix*)        host_makefile_frag=config/mh-aix386 ;;
 119   i[345]86-*-go32*)       host_makefile_frag=config/mh-go32 ;;
 120   vax-*-ultrix2*)         host_makefile_frag=config/mh-vaxult2 ;;
 121   *-*-solaris2*)          host_makefile_frag=config/mh-solaris ;;
 122   m68k-sun-sunos*)        host_makefile_frag=config/mh-sun3 ;;
 123   *-hp-hpux[78]*)         host_makefile_frag=config/mh-hpux8 ;;
 124   *-hp-hpux*)             host_makefile_frag=config/mh-hpux ;;
 125   *-*-hiux*)              host_makefile_frag=config/mh-hpux ;;
 126   rs6000-*-lynxos*)       host_makefile_frag=config/mh-lynxrs6k ;;
 127   *-*-lynxos*)            host_makefile_frag=config/mh-lynxos ;;
 128   *-*-sysv4*)             host_makefile_frag=config/mh-sysv4 ;;
 129   *-*-sysv*)              host_makefile_frag=config/mh-sysv ;;
 130 esac
 131 fi
 132
 133 # If we aren't going to be using gcc, see if we can extract a definition
 134 # of CC from the fragment.
 135 if [ -z "${CC}" -a "${build}" = "${host}" ]; then
 136   IFS="${IFS=   }"; save_ifs="$IFS"; IFS="${IFS}:"
 137   found=
 138   for dir in $PATH; do
 139     test -z "$dir" && dir=.
 140     if test -f $dir/gcc; then
 141       found=yes
 142       break
 143     fi
 144   done
 145   IFS="$save_ifs"
 146   if [ -z "${found}" -a -n "${host_makefile_frag}" -a -f "${srcdir}/${host_makefile_frag}" ]; then
 147     xx=`sed -n -e 's/^[         ]*CC[   ]*=[    ]*\(.*\)$/\1/p' < ${srcdir}/${host_makefile_frag}`
 148     if [ -n "${xx}" ] ; then
 149       CC=$xx
 150     fi
 151   fi
 152 fi
 153
 154 # We default to --with-shared on platforms where -fpic is meaningless.
 155 # Well, we don't yet, but we will.
 156 if false && [ "${host}" = "${target}" ] && [ x${enable_shared} = x ]; then
 157   case "${target}" in
 158     alpha-dec-osf*)     enable_shared=yes ;;
 159     mips-sgi-irix5*)    enable_shared=yes ;;
 160     *)                  enable_shared=no ;;
 161   esac
 162 fi
 163
 164 case "${enable_shared}" in
 165   yes) shared=yes ;;
 166   no) shared=no ;;
 167   "") shared=no ;;
 168   *) shared=yes ;;
 169 esac
 170
 171 if [ x${shared} = xyes ]; then
 172   waugh=
 173   case "${host}" in
 174     hppa*)              waugh=config/mh-papic ;;
 175     i[345]86-*)         waugh=config/mh-x86pic ;;
 176     sparc64-*)          waugh=config/mh-sparcpic ;;
 177     *)                  waugh=config/mh-${host_cpu}pic ;;
 178   esac
 179   if [ -f ${srcdir}/${waugh} ]; then
 180     if [ -n "${host_makefile_frag}" ] ; then
 181       cat ${srcdir}/${host_makefile_frag} > mh-frag
 182       cat ${srcdir}/${waugh} >> mh-frag
 183       host_makefile_frag=mh-frag
 184     else
 185       host_makefile_frag=${waugh}
 186     fi
 187   fi
 188 fi
 189
 190 # per-target:
 191
 192 case "${target}" in
 193   v810*)                target_makefile_frag=config/mt-v810 ;;
 194   i[345]86-*-netware*)  target_makefile_frag=config/mt-netware ;;
 195   powerpc-*-netware*)   target_makefile_frag=config/mt-netware ;;
 196 esac
 197
 198 skipdirs=
 199 gasdir=gas
 200 use_gnu_ld=
 201 use_gnu_as=
 202
 203 # some tools are so dependent upon X11 that if we're not building with X,
 204 # it's not even worth trying to configure, much less build, that tool.
 205
 206 case ${with_x} in
 207   yes | "")  # the default value for this tree is that X11 is available
 208         ;;
 209   no)
 210         skipdirs="${skipdirs} tk gash"
 211         ;;
 212   *)
 213         echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2
 214         ;;
 215 esac
 216
 217 # Some tools are only suitable for building in a "native" situation.
 218 # Those are added when we have a host==target configuration.  For cross
 219 # toolchains, we add some directories that should only be useful in a
 220 # cross-compiler.
 221
 222 is_cross_compiler=
 223
 224 if [ x"${host}" = x"${target}" ] ; then
 225         # when doing a native toolchain, don't build the targets
 226         # that are in the 'cross only' list
 227         skipdirs="${skipdirs} ${cross_only}"
 228         is_cross_compiler=no
 229         target_subdir=.
 230 else
 231         # similarly, don't build the targets in the 'native only'
 232         # list when building a cross compiler
 233         skipdirs="${skipdirs} ${native_only}"
 234         is_cross_compiler=yes
 235         target_subdir=${target_alias}
 236         if [ ! -d ${target_subdir} ] ; then
 237             if mkdir ${target_subdir} ; then true
 238             else
 239                 echo "'*** could not make ${PWD=`pwd`}/${target_subdir}" 1>&2
 240                 exit 1
 241             fi
 242         fi
 243 fi
 244
 245 copy_dirs=
 246
 247 # Handle --with-headers=XXX.  The contents of the named directory are
 248 # copied to $(tooldir)/sys-include.
 249 if [ x"${with_headers}" != x ]; then
 250   if [ x${is_cross_compiler} = xno ]; then
 251     echo 1>&2 '***' --with-headers is only supported when cross compiling
 252     exit 1
 253   fi
 254   case "${exec_prefixoption}" in
 255   "") x=${prefix} ;;
 256   *) x=${exec_prefix} ;;
 257   esac
 258   copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/sys-include"
 259 fi
 260
 261 # Handle --with-libs=XXX.  Multiple directories are permitted.  The
 262 # contents are copied to $(tooldir)/lib.
 263 if [ x"${with_libs}" != x ]; then
 264   if [ x${is_cross_compiler} = xno ]; then
 265     echo 1>&2 '***' --with-libs is only supported when cross compiling
 266     exit 1
 267   fi
 268   # Copy the libraries in reverse order, so that files in the first named
 269   # library override files in subsequent libraries.
 270   case "${exec_prefixoption}" in
 271   "") x=${prefix} ;;
 272   *) x=${exec_prefix} ;;
 273   esac
 274   for l in ${with_libs}; do
 275     copy_dirs="$l $x/${target_alias}/lib ${copy_dirs}"
 276   done
 277 fi
 278
 279 # If both --with-headers and --with-libs are specified, default to
 280 # --without-newlib.
 281 if [ x"${with_headers}" != x ] && [ x"${with_libs}" != x ]; then
 282   if [ x"${with_newlib}" = x ]; then
 283     with_newlib=no
 284   fi
 285 fi
 286
 287 # Recognize --with-newlib/--without-newlib.
 288 if [ x${with_newlib} = xno ]; then
 289   skipdirs="${skipdirs} target-newlib"
 290 elif [ x${with_newlib} = xyes ]; then
 291   skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 292 fi
 293
 294 # Default to using --with-stabs for certain targets.
 295 if [ x${with_stabs} = x ]; then
 296   case "${target}" in
 297   mips*-*-* | alpha*-*-osf* | i[345]86*-*-sysv4* | i[345]86*-*-unixware*)
 298     with_stabs=yes;
 299     withoptions="${withoptions} --with-stabs"
 300     ;;
 301   esac
 302 fi
 303
 304 # Handle ${copy_dirs}
 305 set fnord ${copy_dirs}
 306 shift
 307 while [ $# != 0 ]; do
 308   if [ -f $2/COPIED ] && [ x"`cat $2/COPIED`" = x"$1" ]; then
 309     :
 310   else
 311     echo Copying $1 to $2
 312
 313     # Use the install script to create the directory and all required
 314     # parent directories.
 315     if [ -d $2 ]; then
 316       :
 317     else
 318       echo >config.temp
 319       ${srcdir}/install.sh -c -m 644 config.temp $2/COPIED
 320     fi
 321
 322     # Copy the directory, assuming we have tar.
 323     # FIXME: Should we use B in the second tar?  Not all systems support it.
 324     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
 325
 326     # It is the responsibility of the user to correctly adjust all
 327     # symlinks.  If somebody can figure out how to handle them correctly
 328     # here, feel free to add the code.
 329
 330     echo $1 > $2/COPIED
 331   fi
 332   shift; shift
 333 done
 334
 335 # Configure extra directories which are host specific
 336
 337 case "${host}" in
 338         i[345]86-*-go32*)
 339           configdirs="$configdirs dosrel" ;;
 340 esac
 341
 342 # Remove more programs from consideration, based on the host or
 343 # target this usually means that a port of the program doesn't
 344 # exist yet.
 345
 346 noconfigdirs=""
 347
 348 case "${host}" in
 349   i[345]86-*-vsta)
 350     noconfigdirs="tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl apache"
 351     ;;
 352   i[345]86-*-go32)
 353     noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl apache"
 354         ;;
 355   *-*-cygwin32)
 356      noconfigdirs="patch diff make tk tcl expect dejagnu cvs autoconf texinfo bison send-pr gprof rcs guile perl apache"
 357     ;;
 358   ppc*-*-pe)
 359      noconfigdirs="patch diff  make tk tcl expect dejagnu cvs autoconf texinfo bison send-pr gprof rcs guile perl apache"
 360     ;;
 361 esac
 362
 363
 364 case "${target}" in
 365   *-*-netware)
 366     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-librx target-newlib target-libiberty target-libgloss"
 367     ;;
 368   *-*-vxworks*)
 369     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 370     ;;
 371   *-*-ose)
 372     noconfigdirs="$noconfigdirs target-libgloss"
 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     # gas doesn't generate exception information.
 378     noconfigdirs="$noconfigdirs gas ld emacs fileutils grep target-newlib target-libgloss"
 379     ;;
 380   alpha*-*-*)
 381     # newlib is not 64 bit ready
 382     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 383     ;;
 384 # start-sanitize-arc
 385   arc-*-*)
 386     noconfigdirs="$noconfigdirs target-libgloss"
 387     ;;
 388 # end-sanitize-arc
 389   arm-*-pe*)
 390     noconfigdirs="$noconfigdirs target-libgloss"
 391     ;;
 392   arm-*-riscix*)
 393     noconfigdirs="$noconfigdirs ld target-libgloss"
 394     ;;
 395   h8300*-*-* | \
 396   h8500-*-*)
 397     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx target-libgloss"
 398     ;;
 399   hppa*-*-*elf* | \
 400   hppa*-*-lites*)
 401     # Do configure ld/binutils/gas for this case.
 402     ;;
 403   hppa*-*-*)
 404     # HP's C compiler doesn't handle Emacs correctly (but on BSD and Mach
 405     # cc is gcc, and on any system a user should be able to link cc to
 406     # whatever they want.  FIXME, emacs emacs19).
 407     case "${CC}" in
 408         "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
 409         *) ;;
 410     esac
 411     noconfigdirs="$noconfigdirs ld shellutils"
 412     ;;
 413   i[345]86-*-go32)
 414     # but don't build gdb
 415     noconfigdirs="$noconfigdirs gdb target-libg++ target-libstdc++ target-libio target-librx"
 416     ;;
 417   *-*-cygwin32)
 418
 419     # make/glob's configure uses some AC_TRY_RUN type tests
 420     target_configdirs="$target_configdirs target-winsup"
 421     noconfigdirs="$noconfigdirs tcl tk expect make target-libgloss"
 422     # always build newlib.
 423     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 424
 425     # Can't build gdb for cygwin32 if not native.
 426     case "${host}:${build}" in
 427       *-*-cygwin32 | *-*-cygwin32:*-*-cygwin32) ;; # keep gdb
 428       *) noconfigdirs="$noconfigdirs gdb"
 429     esac
 430
 431     ;;
 432   i[345]86-*-pe)
 433     noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx target-libgloss"
 434     ;;
 435   i[345]86-*-sco3.2v5*)
 436     # The linker does not yet know about weak symbols in COFF,
 437     # and is not configured to handle mixed ELF and COFF.
 438     noconfigdirs="$noconfigdirs gprof ld target-libgloss"
 439     ;;
 440   i[345]86-*-sco*)
 441     noconfigdirs="$noconfigdirs gprof target-libgloss"
 442     ;;
 443   i[345]86-*-solaris2*)
 444     # The linker does static linking correctly, but the Solaris C library
 445     # has bugs such that some important functions won't work when statically
 446     # linked.  (See man pages for getpwuid, for example.)
 447     noconfigdirs="$noconfigdirs ld target-libgloss"
 448     ;;
 449   i[345]86-*-sysv4*)
 450     # The SYSV4 C compiler doesn't handle Emacs correctly
 451     case "${CC}" in
 452         "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
 453         *) ;;
 454     esac
 455     # but that's okay since emacs doesn't work anyway
 456     noconfigdirs="$noconfigdirs emacs emacs19 target-libgloss"
 457     ;;
 458   powerpc-*-aix*)
 459     # copied from rs6000-*-* entry
 460     noconfigdirs="$noconfigdirs gprof cvs target-libgloss"
 461     ;;
 462   powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
 463     target_configdirs="$target_configdirs target-winsup"
 464     noconfigdirs="$noconfigdirs gdb tcl tk make expect target-libgloss"
 465     # always build newlib.
 466     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 467     ;;
 468   rs6000-*-lynxos*)
 469     # The CVS server code doesn't work on the RS/6000
 470     # Newlib makes problems for libg++ in crosses.
 471     noconfigdirs="$noconfigdirs target-newlib gprof cvs"
 472     ;;
 473   rs6000-*-*)
 474     noconfigdirs="$noconfigdirs gprof"
 475     ;;
 476   m68k-apollo-*)
 477     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
 478     ;;
 479   mips*-*-irix5*)
 480     # The GNU linker does not support shared libraries.
 481     # emacs is emacs 18, which does not work on Irix 5 (emacs19 does work)
 482     noconfigdirs="$noconfigdirs ld gprof emacs target-libgloss"
 483     ;;
 484   mips*-dec-bsd*)
 485     noconfigdirs="$noconfigdirs gprof target-libgloss"
 486     ;;
 487   mips*-*-bsd*)
 488     noconfigdirs="$noconfigdirs gprof target-libgloss"
 489     ;;
 490   mips*-*-*)
 491     noconfigdirs="$noconfigdirs gprof"
 492     ;;
 493   romp-*-*)
 494     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss"
 495     ;;
 496   sh-*-*)
 497     case "${host}" in
 498       i[345]86-*-vsta) ;; # don't add gprof back in
 499       i[345]86-*-go32) ;; # don't add gprof back in
 500       *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
 501     esac
 502     noconfigdirs="$noconfigdirs target-libgloss"
 503     ;;
 504   sparc-*-sunos4*)
 505     if [ x${is_cross_compiler} != xno ] ; then
 506            noconfigdirs="$noconfigdirs gdb gdbtest target-newlib target-libgloss"
 507     else
 508            use_gnu_ld=no
 509     fi
 510     ;;
 511   v810-*-*)
 512     noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libio target-libg++ target-libstdc++ opcodes target-libgloss"
 513     ;;
 514   vax-*-vms)
 515     noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes target-libgloss"
 516     ;;
 517   vax-*-*)
 518     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 519     ;;
 520   *-*-lynxos*)
 521     # Newlib makes problems for libg++ in crosses.
 522     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 523     ;;
 524   *-*-macos* | \
 525   *-*-mpw*)
 526     # Macs want a resource compiler.
 527     configdirs="$configdirs grez"
 528     ;;
 529 esac
 530
 531 # targets that need a second pass
 532 case "${target}" in
 533   *-gm-magic*)
 534     noconfigdirs="$noconfigdirs target-libgloss"
 535     ;;
 536 esac
 537
 538 # If we aren't building newlib, then don't build libgloss, since libgloss
 539 # depends upon some newlib header files.
 540 case "${noconfigdirs}" in
 541   *target-libgloss*) ;;
 542   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
 543 esac
 544
 545 # If we are building a Canadian Cross, discard tools that can not be built
 546 # using a cross compiler.  FIXME: These tools should be fixed.
 547 if [ "${build}" != "${host}" ]; then
 548   noconfigdirs="$noconfigdirs expect dejagnu make texinfo diff"
 549 fi
 550
 551 # Make sure we don't let GNU ld be added if we didn't want it.
 552 if [ x$with_gnu_ld = xno ]; then
 553   use_gnu_ld=no
 554   noconfigdirs="$noconfigdirs ld"
 555 fi
 556
 557 # Make sure we don't let GNU as be added if we didn't want it.
 558 if [ x$with_gnu_as = xno ]; then
 559   use_gnu_as=no
 560   noconfigdirs="$noconfigdirs gas"
 561 fi
 562
 563 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs and
 564 # $target_configdirs.
 565 # If we have the source for $noconfigdirs entries, add them to $notsupp.
 566
 567 notsupp=""
 568 for dir in . $skipdirs $noconfigdirs ; do
 569   dirname=`echo $dir | sed -e s/target-//g`
 570   if [ $dir != . ]  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 571     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
 572     if [ -r $srcdir/$dirname/configure ] \
 573         || [ -r $srcdir/$dirname/configure.in ]; then
 574       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 575         true
 576       else
 577         notsupp="$notsupp $dir"
 578       fi
 579     fi
 580   fi
 581   if [ $dir != . ]  && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 582     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
 583     if [ -r $srcdir/$dirname/configure ] \
 584         || [ -r $srcdir/$dirname/configure.in ]; then
 585       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 586         true
 587       else
 588         notsupp="$notsupp $dir"
 589       fi
 590     fi
 591   fi
 592 done
 593
 594 # Sometimes the tools are distributed with libiberty but with no other
 595 # libraries.  In that case, we don't want to build target-libiberty.
 596 if [ -n "${target_configdirs}" ]; then
 597   others=
 598   for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
 599     if [ "$i" != "libiberty" ]; then
 600       if [ -r $srcdir/$i/configure ] || [ -r $srcdir/$i/configure.in ]; then
 601         others=yes;
 602         break;
 603       fi
 604     fi
 605   done
 606   if [ -z "${others}" ]; then
 607     target_configdirs=
 608   fi
 609 fi
 610
 611 # Deconfigure all subdirectories, in case we are changing the
 612 # configuration from one where a subdirectory is supported to one where it
 613 # is not.
 614 if [ -z "${norecursion}" -a -n "${configdirs}" ]; then
 615   for i in `echo ${configdirs} | sed -e s/target-//g` ; do
 616     rm -f $i/Makefile
 617   done
 618 fi
 619 if [ -z "${norecursion}" -a -n "${target_configdirs}" ]; then
 620   for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
 621     rm -f ${target_subdir}/$i/Makefile
 622   done
 623 fi
 624
 625 # Produce a warning message for the subdirs we can't configure.
 626 # This isn't especially interesting in the Cygnus tree, but in the individual
 627 # FSF releases, it's important to let people know when their machine isn't
 628 # supported by the one or two programs in a package.
 629
 630 if [ -n "${notsupp}" ] && [ -z "${norecursion}" ]; then
 631   # If $appdirs is non-empty, at least one of those directories must still
 632   # be configured, or we error out.  (E.g., if the gas release supports a
 633   # specified target in some subdirs but not the gas subdir, we shouldn't
 634   # pretend that all is well.)
 635   if [ -n "$appdirs" ]; then
 636     for dir in $appdirs ; do
 637       if [ -r $dir/Makefile.in ]; then
 638         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 639           appdirs=""
 640           break
 641         fi
 642         if echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
 643           appdirs=""
 644           break
 645         fi
 646       fi
 647     done
 648     if [ -n "$appdirs" ]; then
 649       echo "*** This configuration is not supported by this package." 1>&2
 650       exit 1
 651     fi
 652   fi
 653   # Okay, some application will build, or we don't care to check.  Still
 654   # notify of subdirs not getting built.
 655   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
 656   echo "    ${notsupp}" 1>&2
 657   echo "    (Any other directories should still work fine.)" 1>&2
 658 fi
 659
 660 # Set with_gnu_as and with_gnu_ld as appropriate.
 661 #
 662 # This is done by determining whether or not the appropriate directory
 663 # is available, and by checking whether or not specific configurations
 664 # have requested that this magic not happen.
 665 #
 666 # The command line options always override the explicit settings in
 667 # configure.in, and the settings in configure.in override this magic.
 668 #
 669 # If the default for a toolchain is to use GNU as and ld, and you don't
 670 # want to do that, then you should use the --without-gnu-as and
 671 # --without-gnu-ld options for the configure script.
 672
 673 if [ x${use_gnu_as} = x ] ; then
 674   if [ x${with_gnu_as} != xno ] && echo " ${configdirs} " | grep " ${gasdir} " > /dev/null 2>&1 && [ -d ${srcdir}/${gasdir} ] ; then
 675     with_gnu_as=yes
 676     withoptions="$withoptions --with-gnu-as"
 677   fi
 678 fi
 679
 680 if [ x${use_gnu_ld} = x ] ; then
 681   if [ x${with_gnu_ld} != xno ] && echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 && [ -d ${srcdir}/ld ] ; then
 682     with_gnu_ld=yes
 683     withoptions="$withoptions --with-gnu-ld"
 684   fi
 685 fi
 686
 687 if [ x${shared} = xyes ]; then
 688   case "${target}" in
 689     hppa*)              target_makefile_frag=config/mt-papic ;;
 690     i[345]86-*)         target_makefile_frag=config/mt-x86pic ;;
 691     *)                  target_makefile_frag=config/mt-${target_cpu}pic ;;
 692   esac
 693 fi
 694
 695 # post-target:
 696
 697 # Make sure that the compiler is able to generate an executable.  If it
 698 # can't, we are probably in trouble.  We don't care whether we can run the
 699 # executable--we might be using a cross compiler--we only care whether it
 700 # can be created.  At this point the main configure script has set CC.
 701 echo "int main () { return 0; }" > conftest.c
 702 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
 703 if [ $? = 0 ] && [ -s conftest ]; then
 704   :
 705 else
 706   echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
 707   echo 1>&2 "*** You must set the environment variable CC to a working compiler."
 708   rm -f conftest*
 709   exit 1
 710 fi
 711 rm -f conftest*
 712
 713 # The Solaris /usr/ucb/cc compiler does not appear to work.
 714 case "${host}" in
 715   sparc-sun-solaris2*)
 716       CCBASE="`echo ${CC-cc} | sed 's/ .*$//'`"
 717       if [ "`/usr/bin/which $CCBASE`" = "/usr/ucb/cc" ] ; then
 718           could_use=
 719           [ -d /opt/SUNWspro/bin ] && could_use="/opt/SUNWspro/bin"
 720           if [ -d /opt/cygnus/bin ] ; then
 721               if [ "$could_use" = "" ] ; then
 722                   could_use="/opt/cygnus/bin"
 723               else
 724                   could_use="$could_use or /opt/cygnus/bin"
 725               fi
 726           fi
 727         if [ "$could_use" = "" ] ; then
 728             echo "Warning: compilation may fail because you're using"
 729             echo "/usr/ucb/cc.  You should change your PATH or CC "
 730             echo "variable and rerun configure."
 731         else
 732             echo "Warning: compilation may fail because you're using"
 733             echo "/usr/ucb/cc, when you should use the C compiler from"
 734             echo "$could_use.  You should change your"
 735             echo "PATH or CC variable and rerun configure."
 736         fi
 737       fi
 738   ;;
 739 esac
 740
 741 # If --enable-shared was set, we must set LD_LIBRARY_PATH so that the
 742 # binutils tools will find libbfd.so.
 743 if [ "${shared}" = "yes" ]; then
 744   sed -e 's/^SET_LIB_PATH[      ]*=.*$/SET_LIB_PATH = $(REALLY_SET_LIB_PATH)/' \
 745       Makefile > Makefile.tem
 746   rm -f Makefile
 747   mv -f Makefile.tem Makefile
 748
 749   case "${host}" in
 750   *-*-hpux*)
 751     sed -e 's/RPATH_ENVVAR[     ]*=.*$/RPATH_ENVVAR = SHLIB_PATH/' \
 752         Makefile > Makefile.tem
 753     rm -f Makefile
 754     mv -f Makefile.tem Makefile
 755     ;;
 756   esac
 757 fi
 758
 759 # Record target_configdirs and the configure arguments in Makefile.
 760 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
 761 targargs=`echo "${arguments}" | \
 762         sed -e 's/--norecursion//' \
 763             -e 's/--cache[a-z-]*=[^     ]*//' \
 764             -e 's/--ho[a-z-]*=[^        ]*//' \
 765             -e 's/--ta[a-z-]*=[^        ]*//'`
 766
 767 # Passing a --with-cross-host argument lets the target libraries know
 768 # whether they are being built with a cross-compiler or being built
 769 # native.  However, it would be better to use other mechanisms to make the
 770 # sorts of decisions they want to make on this basis.  Please consider
 771 # this option to be deprecated.  FIXME.
 772 if [ x${is_cross_compiler} = xyes ]; then
 773   targargs="--with-cross-host=${host_alias} ${targargs}"
 774 fi
 775
 776 targargs="--host=${target_alias} ${targargs}"
 777 sed -e "s:^TARGET_CONFIGDIRS[   ]*=.*$:TARGET_CONFIGDIRS = ${target_configdirs}:" \
 778     -e "s%^CONFIG_ARGUMENTS[    ]*=.*$%CONFIG_ARGUMENTS = ${targargs}%" \
 779     -e "s%^TARGET_SUBDIR[       ]*=.*$%TARGET_SUBDIR = ${target_subdir}%" \
 780        Makefile > Makefile.tem
 781 rm -f Makefile
 782 mv -f Makefile.tem Makefile
 783
 784 #
 785 # Local Variables:
 786 # fill-column: 131
 787 # End:
 788 #