configure.in

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   2 #   1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
   3 #
   4 # This file is free software; you can redistribute it and/or modify it
   5 # under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful, but
  10 # WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 ##############################################################################
  19 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  20
  21 sinclude(config/acx.m4)
  22 sinclude(config/gcc-version.m4)
  23
  24 AC_INIT(move-if-change)
  25 AC_PREREQ(2.13)
  26 AC_CANONICAL_SYSTEM
  27 AC_ARG_PROGRAM
  28
  29 # Get 'install' or 'install-sh' and its variants.
  30 AC_PROG_INSTALL
  31 ACX_PROG_LN
  32 AC_PROG_LN_S
  33
  34 ### we might need to use some other shell than /bin/sh for running subshells
  35 ### If we are on Windows, search for the shell.  This will permit people
  36 ### to not have /bin/sh, but to be able to see /SOME/PATH/sh configure
  37 ### without also having to set CONFIG_SHELL.  This code will work when
  38 ### using bash, which sets OSTYPE.
  39 case "${OSTYPE}" in
  40 *win32*)
  41   if test x${CONFIG_SHELL} = x ; then
  42     if test ! -f /bin/sh ; then
  43       if test x${SHELL} != x && test -f ${SHELL} ; then
  44         CONFIG_SHELL=${SHELL}
  45         export CONFIG_SHELL
  46       else
  47         for prog in sh sh.exe bash bash.exe; do
  48           IFS="${IFS=   }"; save_ifs="$IFS"; IFS="${IFS}:"
  49           for dir in $PATH; do
  50             test -z "$dir" && dir=.
  51             if test -f $dir/$prog; then
  52               CONFIG_SHELL=$dir/$prog
  53               export CONFIG_SHELL
  54               break
  55             fi
  56           done
  57           IFS="$save_ifs"
  58           test -n "${CONFIG_SHELL}" && break
  59         done
  60       fi
  61     fi
  62   fi
  63   ;;
  64 esac
  65
  66 config_shell=${CONFIG_SHELL-/bin/sh}
  67
  68 progname=$0
  69 # if PWD already has a value, it is probably wrong.
  70 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  71
  72 # Export original configure arguments for use by sub-configures.  These
  73 # will be expanded by make, so quote '$'.
  74 tmp="$progname $@"
  75 sed -e 's,\$,$$,g' <<EOF_SED > conftestsed.out
  76 $tmp
  77 EOF_SED
  78 TOPLEVEL_CONFIGURE_ARGUMENTS=`cat conftestsed.out`
  79 rm -f conftestsed.out
  80 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  81
  82 moveifchange=${srcdir}/move-if-change
  83
  84 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  85
  86 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  87 # a relative path.
  88 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  89   INSTALL="${srcpwd}/install-sh -c"
  90 fi
  91
  92 # Set srcdir to "." if that's what it is.
  93 # This is important for multilib support.
  94 pwd=`${PWDCMD-pwd}`
  95 if test "${pwd}" = "${srcpwd}" ; then
  96   srcdir=.
  97 fi
  98
  99 topsrcdir=$srcpwd
 100
 101 extra_host_args=
 102
 103 # Define the trigger file to make sure configure will re-run whenever
 104 # the gcc version number changes.
 105 TL_AC_GCC_VERSION([$topsrcdir])
 106 if test -f $gcc_version_trigger ; then
 107   case "$ac_configure_args" in
 108     *--with-gcc-version-trigger=$gcc_version_trigger* )
 109       ;;
 110     * )
 111       # Add to all subconfigure arguments: build, host, and target.
 112       ac_configure_args="$ac_configure_args --with-gcc-version-trigger=$gcc_version_trigger"
 113       ;;
 114   esac
 115 fi
 116
 117 ### To add a new directory to the tree, first choose whether it is a target
 118 ### or a host dependent tool.  Then put it into the appropriate list
 119 ### (library or tools, host or target), doing a dependency sort.
 120
 121 # Subdirs will be configured in the order listed in build_configdirs,
 122 # configdirs, or target_configdirs; see the serialization section below.
 123
 124 # Dependency sorting is only needed when *configuration* must be done in
 125 # a particular order.  In all cases a dependency should be specified in
 126 # the Makefile, whether or not it's implicitly specified here.
 127
 128 # Double entries in build_configdirs, configdirs, or target_configdirs may
 129 # cause circular dependencies and break everything horribly.
 130
 131 # these library is used by various programs built for the build
 132 # environment
 133 #
 134 build_libs="build-libiberty"
 135
 136 # these tools are built for the build environment
 137 build_tools="build-texinfo build-byacc build-flex build-bison build-m4 build-fixincludes"
 138
 139 # these libraries are used by various programs built for the host environment
 140 #
 141 host_libs="intl mmalloc libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp"
 142
 143 # these tools are built for the host environment
 144 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 145 # know that we are building the simulator.
 146 # binutils, gas and ld appear in that order because it makes sense to run
 147 # "make check" in that particular order.
 148 host_tools="texinfo byacc flex bison binutils gas ld fixincludes gcc sid sim gdb make patch prms send-pr gprof etc expect dejagnu ash bash bzip2 m4 autoconf automake libtool diff rcs fileutils shellutils time textutils wdiff find uudecode hello tar gzip indent recode release sed utils guile perl gawk findutils gettext zip fastjar"
 149
 150 # libgcj represents the runtime libraries only used by gcj.
 151 libgcj="target-libffi \
 152         target-boehm-gc \
 153         target-zlib \
 154         target-qthreads \
 155         target-libjava"
 156
 157 # these libraries are built for the target environment, and are built after
 158 # the host libraries and the host tools (which may be a cross compiler)
 159 #
 160 target_libraries="target-libiberty \
 161                 target-libgloss \
 162                 target-newlib \
 163                 target-libstdc++-v3 \
 164                 target-libmudflap \
 165                 target-libgfortran \
 166                 ${libgcj} \
 167                 target-libobjc \
 168                 target-libada"
 169
 170 # these tools are built using the target libraries, and are intended to
 171 # run only in the target environment
 172 #
 173 # note: any program that *uses* libraries that are in the "target_libraries"
 174 # list belongs in this list.  those programs are also very likely
 175 # candidates for the "native_only" list which follows
 176 #
 177 target_tools="target-examples target-groff target-gperf target-rda"
 178
 179 ################################################################################
 180
 181 ## All tools belong in one of the four categories, and are assigned above
 182 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 183 ## is important because configure will choke if they ever get through.
 184 ## ${configdirs} is directories we build using the host tools.
 185 ## ${target_configdirs} is directories we build using the target tools.
 186 configdirs=`echo ${host_libs} ${host_tools}`
 187 target_configdirs=`echo ${target_libraries} ${target_tools}`
 188 build_configdirs=`echo ${build_libs} ${build_tools}`
 189
 190 ################################################################################
 191
 192 srcname="gnu development package"
 193
 194 # This gets set non-empty for some net releases of packages.
 195 appdirs=""
 196
 197 # Define is_cross_compiler to save on calls to 'test'.
 198 is_cross_compiler=
 199 if test x"${host}" = x"${target}" ; then
 200   is_cross_compiler=no
 201 else
 202   is_cross_compiler=yes
 203 fi
 204
 205 # Find the build and target subdir names.
 206 GCC_TOPLEV_SUBDIRS
 207
 208 # Skipdirs are removed silently.
 209 skipdirs=
 210 # Noconfigdirs are removed loudly.
 211 noconfigdirs=""
 212
 213 use_gnu_ld=
 214 # Make sure we don't let GNU ld be added if we didn't want it.
 215 if test x$with_gnu_ld = xno ; then
 216   use_gnu_ld=no
 217   noconfigdirs="$noconfigdirs ld"
 218 fi
 219
 220 use_gnu_as=
 221 # Make sure we don't let GNU as be added if we didn't want it.
 222 if test x$with_gnu_as = xno ; then
 223   use_gnu_as=no
 224   noconfigdirs="$noconfigdirs gas"
 225 fi
 226
 227 # some tools are so dependent upon X11 that if we're not building with X,
 228 # it's not even worth trying to configure, much less build, that tool.
 229
 230 case ${with_x} in
 231   yes | "") ;; # the default value for this tree is that X11 is available
 232   no)
 233     skipdirs="${skipdirs} tk itcl libgui"
 234     # We won't be able to build gdbtk without X.
 235     enable_gdbtk=no
 236     ;;
 237   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 238 esac
 239
 240 # Some tools are only suitable for building in a "native" situation.
 241 # Remove these if host!=target.
 242 native_only="autoconf automake libtool fileutils find gawk gettext gzip hello indent m4 rcs recode sed shellutils tar textutils uudecode wdiff gprof target-groff guile perl time ash bash bzip2 prms gnuserv target-gperf"
 243
 244 # Similarly, some are only suitable for cross toolchains.
 245 # Remove these if host=target.
 246 cross_only="target-libgloss target-newlib target-opcodes"
 247
 248 case $is_cross_compiler in
 249   no) skipdirs="${skipdirs} ${cross_only}" ;;
 250   yes) skipdirs="${skipdirs} ${native_only}" ;;
 251 esac
 252
 253 # If both --with-headers and --with-libs are specified, default to
 254 # --without-newlib.
 255 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 256    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 257   if test x"${with_newlib}" = x ; then
 258     with_newlib=no
 259   fi
 260 fi
 261
 262 # Recognize --with-newlib/--without-newlib.
 263 case ${with_newlib} in
 264   no) skipdirs="${skipdirs} target-newlib" ;;
 265   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 266 esac
 267
 268 # Configure extra directories which are host specific
 269
 270 case "${host}" in
 271   *-cygwin*)
 272     configdirs="$configdirs libtermcap" ;;
 273 esac
 274
 275 # Remove more programs from consideration, based on the host or
 276 # target this usually means that a port of the program doesn't
 277 # exist yet.
 278
 279 case "${host}" in
 280   hppa*64*-*-*)
 281     noconfigdirs="$noconfigdirs byacc"
 282     ;;
 283   i[[3456789]]86-*-vsta)
 284     noconfigdirs="$noconfigdirs tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl itcl gnuserv gettext"
 285     ;;
 286   i[[3456789]]86-*-go32* | i[[3456789]]86-*-msdosdjgpp*)
 287     noconfigdirs="$noconfigdirs tcl tk expect dejagnu send-pr uudecode guile itcl gnuserv libffi"
 288     ;;
 289   i[[3456789]]86-*-mingw32*)
 290     # noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl itcl gnuserv"
 291     noconfigdirs="$noconfigdirs expect dejagnu autoconf automake send-pr rcs guile perl texinfo libtool"
 292     ;;
 293   i[[3456789]]86-*-beos*)
 294     noconfigdirs="$noconfigdirs tk itcl libgui gdb"
 295     ;;
 296   *-*-cygwin*)
 297     noconfigdirs="$noconfigdirs autoconf automake send-pr rcs guile perl"
 298     ;;
 299   *-*-netbsd*)
 300     noconfigdirs="$noconfigdirs rcs"
 301     ;;
 302   ppc*-*-pe)
 303     noconfigdirs="$noconfigdirs patch diff make tk tcl expect dejagnu autoconf automake texinfo bison send-pr gprof rcs guile perl itcl gnuserv"
 304     ;;
 305   powerpc-*-beos*)
 306     noconfigdirs="$noconfigdirs tk itcl libgui gdb dejagnu readline"
 307     ;;
 308   *-*-darwin*)
 309     noconfigdirs="$noconfigdirs tk itcl libgui"
 310     ;;
 311 esac
 312
 313
 314 AC_ARG_ENABLE(libada,
 315 [  --enable-libada        Builds libada directory],
 316 ENABLE_LIBADA=$enableval,
 317 ENABLE_LIBADA=yes)
 318 if test "${ENABLE_LIBADA}" != "yes" ; then
 319   noconfigdirs="$noconfigdirs target-libada"
 320 fi
 321
 322 # Save it here so that, even in case of --enable-libgcj, if the Java
 323 # front-end isn't enabled, we still get libgcj disabled.
 324 libgcj_saved=$libgcj
 325 case $enable_libgcj in
 326 yes)
 327   # If we reset it here, it won't get added to noconfigdirs in the
 328   # target-specific build rules, so it will be forcibly enabled
 329   # (unless the Java language itself isn't enabled).
 330   libgcj=
 331   ;;
 332 no)
 333   # Make sure we get it printed in the list of not supported target libs.
 334   noconfigdirs="$noconfigdirs ${libgcj}"
 335   ;;
 336 esac
 337
 338
 339 # Allow --disable-libmudflap to exclude target-libmudflap
 340 case $enable_libmudflap in
 341 yes)
 342     ;;
 343 no)
 344     noconfigdirs="$noconfigdirs target-libmudflap"
 345     ;;
 346 "")
 347     case "${target}" in
 348     *-*-linux*-gnu | *-*-gnu* | *-*-k*bsd*-gnu)
 349         # Enable libmudflap by default in GNU and friends.
 350         ;;
 351     *-*-freebsd*)
 352         # Enable libmudflap by default in FreeBSD.
 353         ;;
 354     *)
 355         # Disable it by default everywhere else.
 356         noconfigdirs="$noconfigdirs target-libmudflap"
 357         ;;
 358     esac
 359 esac
 360
 361
 362 case "${target}" in
 363   *-*-chorusos)
 364     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 365     ;;
 366   powerpc-*-darwin*)
 367     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes gdb gprof"
 368     ;;
 369   *-*-darwin*)
 370     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes gdb gprof"
 371     noconfigdirs="$noconfigdirs ${libgcj}"
 372     ;;
 373   *-*-freebsd[[12]] | *-*-freebsd[[12]].* | *-*-freebsd*aout*)
 374     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 375     ;;
 376   *-*-freebsd*)
 377     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 378     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 379         && test -f /usr/local/include/gmp.h; then
 380       with_gmp=/usr/local
 381     fi
 382
 383     # Skip some stuff that's unsupported on some FreeBSD configurations.
 384     case "${target}" in
 385       i*86-*-*) ;;
 386       alpha*-*-*) ;;
 387       *)
 388         noconfigdirs="$noconfigdirs ${libgcj}"
 389         ;;
 390     esac
 391     ;;
 392   *-*-kaos*)
 393     # Remove unsupported stuff on all kaOS configurations.
 394     skipdirs="target-libiberty ${libgcj} target-libstdc++-v3 target-librx"
 395     skipdirs="$skipdirs target-libobjc target-examples target-groff target-gperf"
 396     skipdirs="$skipdirs zlib fastjar target-libjava target-boehm-gc target-zlib"
 397     noconfigdirs="$noconfigdirs target-libgloss"
 398     ;;
 399   *-*-netbsd*)
 400     # Skip some stuff on all NetBSD configurations.
 401     noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss"
 402
 403     # Skip some stuff that's unsupported on some NetBSD configurations.
 404     case "${target}" in
 405       i*86-*-netbsdelf*) ;;
 406       arm*-*-netbsdelf*) ;;
 407       *)
 408         noconfigdirs="$noconfigdirs ${libgcj}"
 409         ;;
 410     esac
 411     ;;
 412   *-*-netware*)
 413     noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss ${libgcj} target-libmudflap"
 414     ;;
 415   *-*-rtems*)
 416     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 417     ;;
 418   *-*-uclinux*)
 419     noconfigdirs="$noconfigdirs target-newlib target-libgloss target-rda ${libgcj}"
 420     ;;
 421   *-*-vxworks*)
 422     noconfigdirs="$noconfigdirs target-newlib target-libgloss target-libiberty ${libgcj}"
 423     ;;
 424   alpha*-dec-osf*)
 425     # ld works, but does not support shared libraries.
 426     # newlib is not 64 bit ready.  I'm not sure about fileutils.
 427     # gas doesn't generate exception information.
 428     noconfigdirs="$noconfigdirs gas ld fileutils target-newlib target-libgloss"
 429     ;;
 430   alpha*-*-*vms*)
 431     noconfigdirs="$noconfigdirs gdb ld target-newlib target-libgloss ${libgcj}"
 432     ;;
 433   alpha*-*-linux*)
 434     # newlib is not 64 bit ready
 435     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 436     ;;
 437   alpha*-*-*)
 438     # newlib is not 64 bit ready
 439     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 440     ;;
 441   am33_2.0-*-linux*)
 442     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
 443     ;;
 444   sh-*-linux*)
 445     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
 446     ;;
 447   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 448     noconfigdirs="$noconfigdirs ${libgcj}"
 449     noconfigdirs="$noconfigdirs target-examples"
 450     noconfigdirs="$noconfigdirs target-libiberty texinfo send-pr"
 451     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 452     noconfigdirs="$noconfigdirs expect dejagnu"
 453     # the C++ libraries don't build on top of CE's C libraries
 454     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 455     noconfigdirs="$noconfigdirs target-newlib"
 456     case "${host}" in
 457       *-*-cygwin*) ;; # keep gdb and readline
 458       *) noconfigdirs="$noconfigdirs gdb readline"
 459          ;;
 460     esac
 461     ;;
 462   arc-*-*)
 463     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 464     ;;
 465   arm-semi-aof )
 466     ;;
 467   arm-*-coff | strongarm-*-coff | xscale-*-coff)
 468     noconfigdirs="$noconfigdirs ${libgcj}"
 469     ;;
 470   arm-*-elf* | strongarm-*-elf* | xscale-*-elf* | arm*-*-eabi* )
 471     noconfigdirs="$noconfigdirs target-libffi target-qthreads"
 472     ;;
 473   arm*-*-symbianelf*)
 474     noconfigdirs="$noconfigdirs ${libgcj} target-libiberty"
 475     ;;
 476   arm-*-pe*)
 477     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 478     ;;
 479   thumb-*-coff)
 480     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 481     ;;
 482   thumb-*-elf)
 483     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 484     ;;
 485   thumb-*-pe)
 486     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 487     ;;
 488   arm-*-riscix*)
 489     noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
 490     ;;
 491   avr-*-*)
 492     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 493     ;;
 494   c4x-*-* | tic4x-*-*)
 495     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 496     ;;
 497   c54x*-*-* | tic54x-*-*)
 498     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj} gcc gdb newlib"
 499     ;;
 500   cris-*-*)
 501     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
 502     ;;
 503   crx-*-*)
 504     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-mudflap ${libgcj}"
 505     ;;
 506   d10v-*-*)
 507     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 508     ;;
 509   d30v-*-*)
 510     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 511     ;;
 512   fr30-*-elf*)
 513     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 514     ;;
 515   frv-*-*)
 516     noconfigdirs="$noconfigdirs ${libgcj}"
 517     ;;
 518   h8300*-*-*)
 519     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 520     ;;
 521   h8500-*-*)
 522     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 523     ;;
 524   hppa1.1-*-osf* | hppa1.1-*-bsd* )
 525     ;;
 526   hppa*64*-*-linux* | parisc*64*-*-linux*)
 527     # In this case, it's because the hppa64-linux target is for
 528     # the kernel only at this point and has no libc, and thus no
 529     # headers, crt*.o, etc., all of which are needed by these.
 530     noconfigdirs="$noconfigdirs target-zlib"
 531     ;;
 532   parisc*-*-linux* | hppa*-*-linux*)
 533     ;;
 534   hppa*-*-*elf* | \
 535   hppa*-*-lites* | \
 536   hppa*-*-openbsd* | \
 537   hppa*64*-*-*)
 538     noconfigdirs="$noconfigdirs ${libgcj}"
 539     ;;
 540   hppa*-*-*)
 541     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 542     # build on HP-UX 10.20.
 543     noconfigdirs="$noconfigdirs ld shellutils ${libgcj}"
 544     ;;
 545   i960-*-*)
 546     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 547     ;;
 548   ia64*-*-elf*)
 549     # No gdb support yet.
 550     noconfigdirs="$noconfigdirs readline mmalloc libgui itcl gdb"
 551     ;;
 552   ia64*-**-hpux*)
 553     # No gdb or ld support yet.
 554     noconfigdirs="$noconfigdirs ${libgcj} readline mmalloc libgui itcl gdb ld"
 555     ;;
 556   i370-*-opened*)
 557     ;;
 558   i[[3456789]]86-*-coff | i[[3456789]]86-*-elf)
 559     noconfigdirs="$noconfigdirs ${libgcj}"
 560     ;;
 561   i[[3456789]]86-*-linux*)
 562     # The GCC port for glibc1 has no MD_FALLBACK_FRAME_STATE_FOR, so let's
 563     # not build java stuff by default.
 564     case "${target}" in
 565       *-*-*libc1*)
 566         noconfigdirs="$noconfigdirs ${libgcj}";;
 567     esac
 568
 569     # This section makes it possible to build newlib natively on linux.
 570     # If we are using a cross compiler then don't configure newlib.
 571     if test x${is_cross_compiler} != xno ; then
 572       noconfigdirs="$noconfigdirs target-newlib"
 573     fi
 574     noconfigdirs="$noconfigdirs target-libgloss"
 575     # If we are not using a cross compiler, do configure newlib.
 576     # Note however, that newlib will only be configured in this situation
 577     # if the --with-newlib option has been given, because otherwise
 578     # 'target-newlib' will appear in skipdirs.
 579     ;;
 580   i[[3456789]]86-*-mingw32*)
 581     target_configdirs="$target_configdirs target-mingw"
 582     noconfigdirs="$noconfigdirs expect target-libgloss ${libgcj}"
 583
 584     # Can't build gdb for mingw32 if not native.
 585     case "${host}" in
 586       i[[3456789]]86-*-mingw32) ;; # keep gdb tcl tk expect etc.
 587       *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl gnuserv"
 588          ;;
 589     esac
 590     ;;
 591   *-*-cygwin*)
 592     target_configdirs="$target_configdirs target-libtermcap target-winsup"
 593     noconfigdirs="$noconfigdirs target-gperf target-libgloss ${libgcj}"
 594     # always build newlib if winsup directory is present.
 595     if test -d "$srcdir/winsup"; then
 596       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 597     elif test -d "$srcdir/newlib"; then
 598       echo "Warning: winsup is missing so newlib can't be built."
 599     fi
 600
 601     # Can't build gdb for Cygwin if not native.
 602     case "${host}" in
 603       *-*-cygwin*) ;; # keep gdb tcl tk expect etc.
 604       *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl libgui gnuserv"
 605          ;;
 606     esac
 607     ;;
 608   i[[3456789]]86-moss-msdos | i[[3456789]]86-*-moss* | \
 609   i[[3456789]]86-*-uwin* | i[[3456789]]86-*-interix* )
 610     ;;
 611   i[[3456789]]86-*-pe)
 612     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 613     ;;
 614   i[[3456789]]86-*-sco3.2v5*)
 615     # The linker does not yet know about weak symbols in COFF,
 616     # and is not configured to handle mixed ELF and COFF.
 617     noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
 618     ;;
 619   i[[3456789]]86-*-sco*)
 620     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 621     ;;
 622   i[[3456789]]86-*-solaris2*)
 623     noconfigdirs="$noconfigdirs target-libgloss"
 624     ;;
 625   i[[3456789]]86-*-sysv4*)
 626     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 627     ;;
 628   i[[3456789]]86-*-beos*)
 629     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
 630     ;;
 631   m32r-*-*)
 632     noconfigdirs="$noconfigdirs ${libgcj}"
 633     ;;
 634   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 635     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 636     ;;
 637   m68k-*-elf*)
 638     noconfigdirs="$noconfigdirs ${libgcj}"
 639     ;;
 640   m68k-*-coff*)
 641     noconfigdirs="$noconfigdirs ${libgcj}"
 642     ;;
 643   mcore-*-pe*)
 644   # The EPOC C++ environment does not support exceptions or rtti,
 645   # and so building libstdc++-v3 tends not to always work.
 646     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 647     ;;
 648   mmix-*-*)
 649     noconfigdirs="$noconfigdirs ${libgcj} gdb libgloss target-libgfortran"
 650     ;;
 651   mn10200-*-*)
 652     noconfigdirs="$noconfigdirs ${libgcj}"
 653     ;;
 654   mn10300-*-*)
 655     noconfigdirs="$noconfigdirs ${libgcj}"
 656     ;;
 657   powerpc-*-aix*)
 658     # copied from rs6000-*-* entry
 659     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 660     ;;
 661   powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
 662     target_configdirs="$target_configdirs target-winsup"
 663     noconfigdirs="$noconfigdirs gdb tcl tk make expect target-libgloss itcl gnuserv ${libgcj}"
 664     # always build newlib.
 665     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 666     ;;
 667     # This is temporary until we can link against shared libraries
 668   powerpcle-*-solaris*)
 669     noconfigdirs="$noconfigdirs gdb sim make tcl tk expect itcl gnuserv ${libgcj}"
 670     ;;
 671   powerpc-*-beos*)
 672     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
 673     ;;
 674   powerpc-*-eabi)
 675     noconfigdirs="$noconfigdirs ${libgcj}"
 676     ;;
 677   powerpc-*-eabi* | powerpcle-*-eabi* | powerpc-*-rtems* )
 678     ;;
 679   rs6000-*-lynxos*)
 680     noconfigdirs="$noconfigdirs target-newlib gprof ${libgcj}"
 681     ;;
 682   rs6000-*-aix*)
 683     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 684     ;;
 685   rs6000-*-*)
 686     noconfigdirs="$noconfigdirs gprof ${libgcj}"
 687     ;;
 688   m68k-apollo-*)
 689     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss ${libgcj}"
 690     ;;
 691   mips*-*-irix5*)
 692     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 693     ;;
 694   mips*-*-irix6*)
 695     # Linking libjava exceeds command-line length limits on at least
 696     # IRIX 6.2, but not on IRIX 6.5.
 697     # Also, boehm-gc won't build on IRIX 6.5, according to Jeffrey Oldham
 698     # <oldham@codesourcery.com>
 699     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 700     ;;
 701   mips*-dec-bsd*)
 702     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 703     ;;
 704   mips*-*-bsd*)
 705     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 706     ;;
 707   mipstx39-*-*)
 708     noconfigdirs="$noconfigdirs gprof ${libgcj}"   # same as generic mips
 709     ;;
 710   mips64*-*-linux*)
 711     noconfigdirs="$noconfigdirs target-newlib ${libgcj}"
 712     ;;
 713   mips*-*-linux*)
 714     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 715     ;;
 716   mips*-*-*)
 717     noconfigdirs="$noconfigdirs gprof ${libgcj}"
 718     ;;
 719   romp-*-*)
 720     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss ${libgcj}"
 721     ;;
 722   sh-*-*)
 723     case "${host}" in
 724       i[[3456789]]86-*-vsta) ;; # don't add gprof back in
 725       i[[3456789]]86-*-go32*) ;; # don't add gprof back in
 726       i[[3456789]]86-*-msdosdjgpp*) ;; # don't add gprof back in
 727       *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
 728     esac
 729     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 730     ;;
 731   sh64-*-*)
 732     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 733     ;;
 734   sparc-*-elf*)
 735     noconfigdirs="$noconfigdirs ${libgcj}"
 736     ;;
 737   sparc64-*-elf*)
 738     noconfigdirs="$noconfigdirs ${libgcj}"
 739     ;;
 740   sparclite-*-*)
 741     noconfigdirs="$noconfigdirs ${libgcj}"
 742     ;;
 743   sparc-*-sunos4*)
 744     noconfigdirs="$noconfigdirs ${libgcj}"
 745     if test x${is_cross_compiler} != xno ; then
 746            noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 747     else
 748            use_gnu_ld=no
 749     fi
 750     ;;
 751   sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
 752     ;;
 753   v810-*-*)
 754     noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libstdc++-v3 opcodes target-libgloss ${libgcj}"
 755     ;;
 756   v850-*-*)
 757     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 758     ;;
 759   v850e-*-*)
 760     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 761     ;;
 762   v850ea-*-*)
 763     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 764     ;;
 765   vax-*-vms)
 766     noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes target-libgloss ${libgcj}"
 767     ;;
 768   vax-*-*)
 769     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 770     ;;
 771   xtensa-*-*)
 772     noconfigdirs="$noconfigdirs ${libgcj}"
 773     ;;
 774   ip2k-*-*)
 775     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 776     ;;
 777   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
 778     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 779     ;;
 780   *-*-lynxos*)
 781     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 782     ;;
 783   *-*-*)
 784     noconfigdirs="$noconfigdirs ${libgcj}"
 785     ;;
 786 esac
 787
 788 # If we aren't building newlib, then don't build libgloss, since libgloss
 789 # depends upon some newlib header files.
 790 case "${noconfigdirs}" in
 791   *target-libgloss*) ;;
 792   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
 793 esac
 794
 795 # Work in distributions that contain no compiler tools, like Autoconf.
 796 tentative_cc=""
 797 host_makefile_frag=/dev/null
 798 if test -d ${srcdir}/config ; then
 799 case "${host}" in
 800   m68k-hp-hpux*)
 801     # Avoid "too much defining" errors from HPUX compiler.
 802     tentative_cc="cc -Wp,-H256000"
 803     # If "ar" in $PATH is GNU ar, the symbol table may need rebuilding.
 804     # If it's HP/UX ar, this should be harmless.
 805     RANLIB="ar ts"
 806     ;;
 807   m68k-apollo-sysv*)
 808     tentative_cc="cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DUSG"
 809     ;;
 810   m68k-apollo-bsd*)
 811     #None of the Apollo compilers can compile gas or binutils.  The preprocessor
 812     # chokes on bfd, the compiler won't let you assign integers to enums, and
 813     # other problems.  Defining CC to gcc is a questionable way to say "don't use
 814     # the apollo compiler" (the preferred version of GCC could be called cc,
 815     # or whatever), but I'm not sure leaving CC as cc is any better...
 816     #CC=cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DNO_STDARG
 817     # Used to have BISON=yacc.
 818     tentative_cc=gcc
 819     ;;
 820   m88k-dg-dgux*)
 821     tentative_cc="gcc -Wall -ansi -D__using_DGUX"
 822     ;;
 823   m88k-harris-cxux*)
 824     # Under CX/UX, we want to tell the compiler to use ANSI mode.
 825     tentative_cc="cc -Xa"
 826     host_makefile_frag="config/mh-cxux"
 827     ;;
 828   m88k-motorola-sysv*)
 829     ;;
 830   mips*-dec-ultrix*)
 831     tentative_cc="cc -Wf,-XNg1000"
 832     host_makefile_frag="config/mh-decstation"
 833     ;;
 834   mips*-nec-sysv4*)
 835     # The C compiler on NEC MIPS SVR4 needs bigger tables.
 836     tentative_cc="cc -ZXNd=5000 -ZXNg=1000"
 837     host_makefile_frag="config/mh-necv4"
 838     ;;
 839   mips*-sgi-irix4*)
 840     # Tell compiler to use K&R C.  We can't compile under the SGI Ansi
 841     # environment.  Also bump switch table size so that cp-parse will
 842     # compile.  Bump string length limit so linker builds.
 843     tentative_cc="cc -cckr -Wf,-XNg1500 -Wf,-XNk1000 -Wf,-XNh2000 -Wf,-XNl8192"
 844     ;;
 845   mips*-*-sysv4*)
 846     host_makefile_frag="config/mh-sysv4"
 847     ;;
 848   mips*-*-sysv*)
 849     # This is for a MIPS running RISC/os 4.52C.
 850
 851     # This is needed for GDB, but needs to be in the top-level make because
 852     # if a library is compiled with the bsd headers and gets linked with the
 853     # sysv system libraries all hell can break loose (e.g. a jmp_buf might be
 854     # a different size).
 855     # ptrace(2) apparently has problems in the BSD environment.  No workaround is
 856     # known except to select the sysv environment.  Could we use /proc instead?
 857     # These "sysv environments" and "bsd environments" often end up being a pain.
 858     #
 859     # This is not part of CFLAGS because perhaps not all C compilers have this
 860     # option.
 861     tentative_cc="cc -systype sysv"
 862     ;;
 863   i370-ibm-opened*)
 864     tentative_cc="c89"
 865     ;;
 866   i[[3456789]]86-*-sysv5*)
 867     host_makefile_frag="config/mh-sysv5"
 868     ;;
 869   i[[3456789]]86-*-dgux*)
 870     tentative_cc="gcc -Wall -ansi -D__using_DGUX"
 871     host_makefile_frag="config/mh-dgux386"
 872     ;;
 873   i[[3456789]]86-ncr-sysv4.3*)
 874     # The MetaWare compiler will generate a copyright message unless you
 875     # turn it off by adding the -Hnocopyr flag.
 876     tentative_cc="cc -Hnocopyr"
 877     ;;
 878   i[[3456789]]86-ncr-sysv4*)
 879     # for an NCR 3000 (i486/SVR4) system.
 880     # The NCR 3000 ships with a MetaWare compiler installed as /bin/cc.
 881     # This compiler not only emits obnoxious copyright messages every time
 882     # you run it, but it chokes and dies on a whole bunch of GNU source
 883     # files.  Default to using the AT&T compiler installed in /usr/ccs/ATT/cc.
 884     tentative_cc="/usr/ccs/ATT/cc"
 885     host_makefile_frag="config/mh-ncr3000"
 886     ;;
 887   i[[3456789]]86-*-sco3.2v5*)
 888     ;;
 889   i[[3456789]]86-*-sco*)
 890     # The native C compiler botches some simple uses of const.  Unfortunately,
 891     # it doesn't defined anything like "__sco__" for us to test for in ansidecl.h.
 892     tentative_cc="cc -Dconst="
 893     host_makefile_frag="config/mh-sco"
 894     ;;
 895   i[[3456789]]86-*-udk*)
 896     host_makefile_frag="config/mh-sysv5"
 897     ;;
 898   i[[3456789]]86-*-solaris2*)
 899     host_makefile_frag="config/mh-sysv4"
 900     ;;
 901   i[[3456789]]86-*-msdosdjgpp*)
 902     host_makefile_frag="config/mh-djgpp"
 903     ;;
 904   *-cygwin*)
 905     host_makefile_frag="config/mh-cygwin"
 906     ;;
 907   *-mingw32*)
 908     host_makefile_frag="config/mh-mingw32"
 909     ;;
 910   *-interix*)
 911     host_makefile_frag="config/mh-interix"
 912     ;;
 913   vax-*-ultrix2*)
 914     # The old BSD pcc isn't up to compiling parts of gdb so use gcc
 915     tentative_cc=gcc
 916     ;;
 917   *-*-solaris2*)
 918     host_makefile_frag="config/mh-solaris"
 919     ;;
 920   m68k-sun-sunos*)
 921     # Sun's C compiler needs the -J flag to be able to compile cp-parse.c
 922     # without overflowing the jump tables (-J says to use a 32 bit table)
 923     tentative_cc="cc -J"
 924     ;;
 925   *-hp-hpux*)
 926     tentative_cc="cc -Wp,-H256000"
 927     ;;
 928   *-*-hiux*)
 929     tentative_cc="cc -Wp,-H256000"
 930     ;;
 931   rs6000-*-lynxos*)
 932     # /bin/cc is less than useful for our purposes.  Always use GCC
 933     tentative_cc="/usr/cygnus/progressive/bin/gcc"
 934     host_makefile_frag="config/mh-lynxrs6k"
 935     ;;
 936   powerpc-*-darwin*)
 937     host_makefile_frag="config/mh-ppc-darwin"
 938     ;;
 939   *-*-lynxos*)
 940     # /bin/cc is less than useful for our purposes.  Always use GCC
 941     tentative_cc="/bin/gcc"
 942     ;;
 943   *-*-sysv4*)
 944     host_makefile_frag="config/mh-sysv4"
 945     ;;
 946   # This is placed last to prevent interfering with the cases above.
 947   i[[3456789]]86-*-*)
 948     # Build the stage2 and stage3 compilers with -fomit-frame-pointer.
 949     host_makefile_frag="config/mh-x86omitfp"
 950     ;;
 951 esac
 952 fi
 953
 954 # If we aren't going to be using gcc, see if we can extract a definition
 955 # of CC from the fragment.
 956 # Actually, use the 'pre-extracted' version above.
 957 if test -z "${CC}" && test "${build}" = "${host}" ; then
 958   IFS="${IFS=   }"; save_ifs="$IFS"; IFS="${IFS}:"
 959   found=
 960   for dir in $PATH; do
 961     test -z "$dir" && dir=.
 962     if test -f $dir/gcc; then
 963       found=yes
 964       break
 965     fi
 966   done
 967   IFS="$save_ifs"
 968   if test -z "${found}" && test -n "${tentative_cc}" ; then
 969     CC=$tentative_cc
 970   fi
 971 fi
 972
 973 if test "${build}" != "${host}" ; then
 974   # If we are doing a Canadian Cross, in which the host and build systems
 975   # are not the same, we set reasonable default values for the tools.
 976
 977   CC=${CC-${host_alias}-gcc}
 978   CFLAGS=${CFLAGS-"-g -O2"}
 979   CXX=${CXX-${host_alias}-c++}
 980   CXXFLAGS=${CXXFLAGS-"-g -O2"}
 981   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
 982   CC_FOR_TARGET=${CC_FOR_TARGET-${target_alias}-gcc}
 983   CXX_FOR_TARGET=${CXX_FOR_TARGET-${target_alias}-c++}
 984   GCJ_FOR_TARGET=${GCJ_FOR_TARGET-${target_alias}-gcj}
 985   GCC_FOR_TARGET=${GCC_FOR_TARGET-${CC_FOR_TARGET-${target_alias}-gcc}}
 986   BUILD_PREFIX=${build_alias}-
 987   BUILD_PREFIX_1=${build_alias}-
 988
 989 else
 990   # Set reasonable default values for some tools even if not Canadian.
 991   # Of course, these are different reasonable default values, originally
 992   # specified directly in the Makefile.
 993   # We don't export, so that autoconf can do its job.
 994   # Note that all these settings are above the fragment inclusion point
 995   # in Makefile.in, so can still be overridden by fragments.
 996   # This is all going to change when we autoconfiscate...
 997
 998   CC_FOR_BUILD="\$(CC)"
 999   GCC_FOR_TARGET="\$(USUAL_GCC_FOR_TARGET)"
1000   BUILD_PREFIX=
1001   BUILD_PREFIX_1=loser-
1002
1003   AC_PROG_CC
1004
1005   # We must set the default linker to the linker used by gcc for the correct
1006   # operation of libtool.  If LD is not defined and we are using gcc, try to
1007   # set the LD default to the ld used by gcc.
1008   if test -z "$LD"; then
1009     if test "$GCC" = yes; then
1010       case $build in
1011       *-*-mingw*)
1012         gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1013       *)
1014         gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1015       esac
1016       case $gcc_prog_ld in
1017       # Accept absolute paths.
1018       [[\\/]* | [A-Za-z]:[\\/]*)]
1019         LD="$gcc_prog_ld" ;;
1020       esac
1021     fi
1022   fi
1023
1024   CXX=${CXX-"c++"}
1025   CFLAGS=${CFLAGS-"-g"}
1026   CXXFLAGS=${CXXFLAGS-"-g -O2"}
1027 fi
1028
1029 ACX_PROG_GNAT
1030 ACX_PROG_CMP_IGNORE_INITIAL
1031
1032 # Check for GMP and MPFR
1033 gmplibs=
1034 gmpinc=
1035 have_gmp=yes
1036 # Specify a location for mpfr
1037 # check for this first so it ends up on the link line before gmp.
1038 AC_ARG_WITH(mpfr-dir, [  --with-mpfr-dir=PATH    Specify source directory for MPFR library])
1039
1040 if test "x$with_mpfr_dir" != x; then
1041   gmpinc="-I$with_mpfr_dir/mpfr"
1042   gmplibs="$with_mpfr_dir/libmpfr.a"
1043 else
1044   gmplibs="-lmpfr"
1045 fi
1046
1047 AC_ARG_WITH(mpfr, [  --with-mpfr=PATH        Specify directory for installed MPFR library])
1048
1049 if test "x$with_mpfr" != x; then
1050   gmplibs="-L$with_mpfr/lib $gmplibs"
1051   gmpinc="-I$with_mpfr/include"
1052 fi
1053
1054 # Specify a location for gmp
1055 AC_ARG_WITH(gmp-dir, [  --with-gmp-dir=PATH     Specify source directory for GMP library])
1056
1057 if test "x$with_gmp_dir" != x; then
1058   gmpinc="$gmpinc -I$with_gmp_dir"
1059   if test -f "$with_gmp_dir/.libs/libgmp.a"; then
1060     gmplibs="$gmplibs $with_gmp_dir/.libs/libgmp.a"
1061   elif test -f "$with_gmp_dir/_libs/libgmp.a"; then
1062     gmplibs="$gmplibs $with_gmp_dir/_libs/libgmp.a"
1063   fi
1064   # One of the later tests will catch the error if neither library is present.
1065 else
1066   gmplibs="$gmplibs -lgmp"
1067 fi
1068
1069 AC_ARG_WITH(gmp, [  --with-gmp=PATH         Specify directory for installed GMP library])
1070
1071 if test "x$with_gmp" != x; then
1072   gmplibs="-L$with_gmp/lib $gmplibs"
1073   gmpinc="-I$with_gmp/include $gmpinc"
1074 fi
1075
1076 saved_CFLAGS="$CFLAGS"
1077 CFLAGS="$CFLAGS $gmpinc"
1078 # Check GMP actually works
1079 AC_MSG_CHECKING([for correct version of gmp.h])
1080 AC_TRY_COMPILE([#include "gmp.h"],[
1081 #if __GNU_MP_VERSION < 3
1082 choke me
1083 #endif
1084 ], [AC_MSG_RESULT([yes])],
1085   [AC_MSG_RESULT([no]); have_gmp=no])
1086
1087 if test x"$have_gmp" = xyes; then
1088   AC_MSG_CHECKING([for MPFR])
1089
1090   saved_LIBS="$LIBS"
1091   LIBS="$LIBS $gmplibs"
1092   AC_TRY_LINK([#include <gmp.h>
1093 #include <mpfr.h>], [mpfr_t n; mpfr_init(n);],
1094     [AC_MSG_RESULT([yes])],  [AC_MSG_RESULT([no]); have_gmp=no])
1095   LIBS="$saved_LIBS"
1096   CFLAGS="$saved_CFLAGS"
1097 fi
1098
1099 # Flags needed for both GMP and/or MPFR
1100 AC_SUBST(gmplibs)
1101 AC_SUBST(gmpinc)
1102
1103 # By default, C is the only stage 1 language.
1104 stage1_languages=c
1105 AC_SUBST(stage1_languages)
1106
1107 # Figure out what language subdirectories are present.
1108 # Look if the user specified --enable-languages="..."; if not, use
1109 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1110 # go away some day.
1111 # NB:  embedded tabs in this IF block -- do not untabify
1112 if test -d ${srcdir}/gcc; then
1113   if test x"${enable_languages+set}" != xset; then
1114     if test x"${LANGUAGES+set}" = xset; then
1115       enable_languages="${LANGUAGES}"
1116         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1117     else
1118       enable_languages=all
1119     fi
1120   else
1121     if test x"${enable_languages}" = x ||
1122        test x"${enable_languages}" = xyes;
1123        then
1124       echo configure.in: --enable-languages needs at least one language argument 1>&2
1125       exit 1
1126     fi
1127   fi
1128   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1129
1130   # First scan to see if an enabled language requires some other language.
1131   # We assume that a given config-lang.in will list all the language
1132   # front ends it requires, even if some are required indirectly.
1133   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1134     case ${lang_frag} in
1135       ..) ;;
1136       # The odd quoting in the next line works around
1137       # an apparent bug in bash 1.12 on linux.
1138       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1139       *)
1140         # From the config-lang.in, get $language, $lang_requires
1141         language=
1142         lang_requires=
1143         . ${lang_frag}
1144         for other in ${lang_requires} ; do
1145           case ,${enable_languages}, in
1146             *,$other,*) ;;
1147             *,all,*) ;;
1148             *,$language,*)
1149               echo " \`$other' language required by \`$language'; enabling" 1>&2
1150               enable_languages="${enable_languages},${other}"
1151               ;;
1152           esac
1153         done
1154         ;;
1155     esac
1156   done
1157
1158   new_enable_languages=c
1159   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1160   potential_languages=c
1161
1162   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1163     case ${lang_frag} in
1164       ..) ;;
1165       # The odd quoting in the next line works around
1166       # an apparent bug in bash 1.12 on linux.
1167       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1168       *)
1169         # From the config-lang.in, get $language, $target_libs,
1170         # $lang_dirs, $boot_language, and $build_by_default
1171         language=
1172         target_libs=
1173         lang_dirs=
1174         boot_language=
1175         build_by_default=
1176         need_gmp=
1177         . ${lang_frag}
1178         potential_languages="${potential_languages},${language}"
1179         # This is quite sensitive to the ordering of the case statement arms.
1180         case ,${enable_languages},:${language}:${have_gnat}:${build_by_default} in
1181           *::*:*)
1182             echo "${lang_frag} doesn't set \$language." 1>&2
1183             exit 1
1184             ;;
1185           *:ada:no:*)
1186             # Ada was requested with no preexisting GNAT.  Disable unconditionally.
1187             add_this_lang=no
1188             ;;
1189           *,${language},*:*:*:*)
1190             # Language was explicitly selected; include it.
1191             add_this_lang=yes
1192             ;;
1193           *,all,*:*:*:no)
1194             # 'all' was selected, but this is not a default language
1195             # so do not include it.
1196             add_this_lang=no
1197             ;;
1198           *,all,*:*:*:*)
1199             # 'all' was selected and this is a default language; include it.
1200             add_this_lang=yes
1201             ;;
1202           *)
1203             add_this_lang=no
1204             ;;
1205         esac
1206
1207         # Disable languages that need GMP if it isn't available.
1208         case ,${enable_languages},:${have_gmp}:${need_gmp} in
1209           *,${language},*:no:yes)
1210             # Specifically requested language; tell them.
1211             AC_MSG_ERROR([GMP with MPFR support is required to build $language])
1212             ;;
1213           *:no:yes)
1214             # Silently disable.
1215             add_this_lang=no
1216             ;;
1217         esac
1218
1219         case $add_this_lang in
1220           no)
1221             # Remove language-dependent dirs.
1222             eval noconfigdirs='"$noconfigdirs "'\"$target_libs $lang_dirs\"
1223             ;;
1224           *)
1225             new_enable_languages="$new_enable_languages,$language"
1226             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1227             case ${boot_language} in
1228               yes)
1229                 # Add to (comma-separated) list of stage 1 languages.
1230                 stage1_languages="${stage1_languages},${language}"
1231                 ;;
1232             esac
1233             ;;
1234         esac
1235         ;;
1236     esac
1237   done
1238
1239   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
1240   if test "x$missing_languages" != x; then
1241     AC_MSG_ERROR([
1242 The following requested languages were not found: ${missing_languages}
1243 The available languages are: ${potential_languages}])
1244   fi
1245
1246   if test "x$new_enable_languages" != "x$enable_languages"; then
1247     echo The following languages will be built: ${new_enable_languages}
1248   fi
1249   enable_languages="$new_enable_languages"
1250   ac_configure_args=`echo " $ac_configure_args" | sed -e 's/ --enable-languages=[[^ ]]*//' -e 's/$/ --enable-languages='"$enable_languages"/ `
1251 fi
1252
1253 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
1254 # $build_configdirs and $target_configdirs.
1255 # If we have the source for $noconfigdirs entries, add them to $notsupp.
1256
1257 notsupp=""
1258 for dir in . $skipdirs $noconfigdirs ; do
1259   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
1260   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1261     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
1262     if test -r $srcdir/$dirname/configure ; then
1263       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1264         true
1265       else
1266         notsupp="$notsupp $dir"
1267       fi
1268     fi
1269   fi
1270   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1271     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
1272     if test -r $srcdir/$dirname/configure ; then
1273       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1274         true
1275       else
1276         notsupp="$notsupp $dir"
1277       fi
1278     fi
1279   fi
1280   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1281     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
1282     if test -r $srcdir/$dirname/configure ; then
1283       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1284         true
1285       else
1286         notsupp="$notsupp $dir"
1287       fi
1288     fi
1289   fi
1290 done
1291
1292 # Sometimes the tools are distributed with libiberty but with no other
1293 # libraries.  In that case, we don't want to build target-libiberty.
1294 if test -n "${target_configdirs}" ; then
1295   others=
1296   for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
1297     if test "$i" != "libiberty" ; then
1298       if test -r $srcdir/$i/configure ; then
1299         others=yes;
1300         break;
1301       fi
1302     fi
1303   done
1304   if test -z "${others}" ; then
1305     target_configdirs=
1306   fi
1307 fi
1308
1309 # Quietly strip out all directories which aren't configurable in this tree.
1310 # This relies on all configurable subdirectories being autoconfiscated, which
1311 # is now the case.
1312 build_configdirs_all="$build_configdirs"
1313 build_configdirs=
1314 for i in ${build_configdirs_all} ; do
1315   j=`echo $i | sed -e s/build-//g`
1316   if test -f ${srcdir}/$j/configure ; then
1317     build_configdirs="${build_configdirs} $i"
1318   fi
1319 done
1320
1321 configdirs_all="$configdirs"
1322 configdirs=
1323 for i in ${configdirs_all} ; do
1324   if test -f ${srcdir}/$i/configure ; then
1325     configdirs="${configdirs} $i"
1326   fi
1327 done
1328
1329 target_configdirs_all="$target_configdirs"
1330 target_configdirs=
1331 for i in ${target_configdirs_all} ; do
1332   j=`echo $i | sed -e s/target-//g`
1333   if test -f ${srcdir}/$j/configure ; then
1334     target_configdirs="${target_configdirs} $i"
1335   fi
1336 done
1337
1338 # Produce a warning message for the subdirs we can't configure.
1339 # This isn't especially interesting in the Cygnus tree, but in the individual
1340 # FSF releases, it's important to let people know when their machine isn't
1341 # supported by the one or two programs in a package.
1342
1343 if test -n "${notsupp}" && test -z "${norecursion}" ; then
1344   # If $appdirs is non-empty, at least one of those directories must still
1345   # be configured, or we error out.  (E.g., if the gas release supports a
1346   # specified target in some subdirs but not the gas subdir, we shouldn't
1347   # pretend that all is well.)
1348   if test -n "$appdirs" ; then
1349     for dir in $appdirs ; do
1350       if test -r $dir/Makefile.in ; then
1351         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1352           appdirs=""
1353           break
1354         fi
1355         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
1356           appdirs=""
1357           break
1358         fi
1359       fi
1360     done
1361     if test -n "$appdirs" ; then
1362       echo "*** This configuration is not supported by this package." 1>&2
1363       exit 1
1364     fi
1365   fi
1366   # Okay, some application will build, or we don't care to check.  Still
1367   # notify of subdirs not getting built.
1368   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
1369   echo "    ${notsupp}" 1>&2
1370   echo "    (Any other directories should still work fine.)" 1>&2
1371 fi
1372
1373 case "$host" in
1374   *msdosdjgpp*)
1375     enable_gdbtk=no ;;
1376 esac
1377
1378 copy_dirs=
1379
1380 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
1381 # the named directory are copied to $(tooldir)/sys-include.
1382 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
1383   if test x${is_cross_compiler} = xno ; then
1384     echo 1>&2 '***' --with-headers is only supported when cross compiling
1385     exit 1
1386   fi
1387   if test x"${with_headers}" != xyes ; then
1388     case "${exec_prefixoption}" in
1389     "") x=${prefix} ;;
1390     *) x=${exec_prefix} ;;
1391     esac
1392     copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/sys-include"
1393   fi
1394 fi
1395
1396 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
1397 # the name directories are copied to $(tooldir)/lib.  Multiple directories
1398 # are permitted.
1399 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
1400   if test x${is_cross_compiler} = xno ; then
1401     echo 1>&2 '***' --with-libs is only supported when cross compiling
1402     exit 1
1403   fi
1404   if test x"${with_libs}" != xyes ; then
1405     # Copy the libraries in reverse order, so that files in the first named
1406     # library override files in subsequent libraries.
1407     case "${exec_prefixoption}" in
1408     "") x=${prefix} ;;
1409     *) x=${exec_prefix} ;;
1410     esac
1411     for l in ${with_libs}; do
1412       copy_dirs="$l $x/${target_alias}/lib ${copy_dirs}"
1413     done
1414   fi
1415 fi
1416
1417 # Handle ${copy_dirs}
1418 set fnord ${copy_dirs}
1419 shift
1420 while test $# != 0 ; do
1421   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
1422     :
1423   else
1424     echo Copying $1 to $2
1425
1426     # Use the install script to create the directory and all required
1427     # parent directories.
1428     if test -d $2 ; then
1429       :
1430     else
1431       echo >config.temp
1432       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
1433     fi
1434
1435     # Copy the directory, assuming we have tar.
1436     # FIXME: Should we use B in the second tar?  Not all systems support it.
1437     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
1438
1439     # It is the responsibility of the user to correctly adjust all
1440     # symlinks.  If somebody can figure out how to handle them correctly
1441     # here, feel free to add the code.
1442
1443     echo $1 > $2/COPIED
1444   fi
1445   shift; shift
1446 done
1447
1448 extra_arflags_for_target=
1449 extra_nmflags_for_target=
1450 extra_ranlibflags_for_target=
1451 target_makefile_frag=/dev/null
1452 case "${target}" in
1453   *-*-netware*)
1454     target_makefile_frag="config/mt-netware"
1455     ;;
1456   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
1457     target_makefile_frag="config/mt-gnu"
1458     ;;
1459   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
1460     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
1461     # commands to handle both 32-bit and 64-bit objects.  These flags are
1462     # harmless if we're using GNU nm or ar.
1463     extra_arflags_for_target=" -X32_64"
1464     extra_nmflags_for_target=" -B -X32_64"
1465     ;;
1466   *-*-darwin*)
1467     # ranlib from Darwin requires the -c flag to look at common symbols.
1468     extra_ranlibflags_for_target=" -c"
1469     ;;
1470   mips*-*-pe | sh*-*-pe | *arm-wince-pe)
1471     target_makefile_frag="config/mt-wince"
1472     ;;
1473 esac
1474
1475 alphaieee_frag=/dev/null
1476 case $target in
1477   alpha*-*-*)
1478     # This just makes sure to use the -mieee option to build target libs.
1479     # This should probably be set individually by each library.
1480     alphaieee_frag="config/mt-alphaieee"
1481     ;;
1482 esac
1483
1484 # If --enable-target-optspace always use -Os instead of -O2 to build
1485 # the target libraries, similarly if it is not specified, use -Os
1486 # on selected platforms.
1487 ospace_frag=/dev/null
1488 case "${enable_target_optspace}:${target}" in
1489   yes:*)
1490     ospace_frag="config/mt-ospace"
1491     ;;
1492   :d30v-*)
1493     ospace_frag="config/mt-d30v"
1494     ;;
1495   :m32r-* | :d10v-* | :fr30-*)
1496     ospace_frag="config/mt-ospace"
1497     ;;
1498   no:* | :*)
1499     ;;
1500   *)
1501     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
1502     ;;
1503 esac
1504
1505 # Set with_gnu_as and with_gnu_ld as appropriate.
1506 #
1507 # This is done by determining whether or not the appropriate directory
1508 # is available, and by checking whether or not specific configurations
1509 # have requested that this magic not happen.
1510 #
1511 # The command line options always override the explicit settings in
1512 # configure.in, and the settings in configure.in override this magic.
1513 #
1514 # If the default for a toolchain is to use GNU as and ld, and you don't
1515 # want to do that, then you should use the --without-gnu-as and
1516 # --without-gnu-ld options for the configure script.
1517
1518 if test x${use_gnu_as} = x &&
1519    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
1520   with_gnu_as=yes
1521   extra_host_args="$extra_host_args --with-gnu-as"
1522 fi
1523
1524 if test x${use_gnu_ld} = x &&
1525    echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 ; then
1526   with_gnu_ld=yes
1527   extra_host_args="$extra_host_args --with-gnu-ld"
1528 fi
1529
1530 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
1531 # can detect this case.
1532
1533 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
1534   with_newlib=yes
1535   extra_host_args="$extra_host_args --with-newlib"
1536 fi
1537
1538 # Default to using --with-stabs for certain targets.
1539 if test x${with_stabs} = x ; then
1540   case "${target}" in
1541   mips*-*-irix[[56]]*)
1542     ;;
1543   mips*-*-* | alpha*-*-osf*)
1544     with_stabs=yes;
1545     extra_host_args="${extra_host_args} --with-stabs"
1546     ;;
1547   esac
1548 fi
1549
1550 # hpux11 in 64bit mode has libraries in a weird place.  Arrange to find
1551 # them automatically.
1552 case "${host}" in
1553   hppa*64*-*-hpux11*)
1554     extra_host_args="$extra_host_args -x-libraries=/usr/lib/pa20_64 -x-includes=/usr/X11R6/include"
1555     ;;
1556 esac
1557
1558 # Some systems (e.g., one of the i386-aix systems the gas testers are
1559 # using) don't handle "\$" correctly, so don't use it here.
1560 tooldir='${exec_prefix}'/${target_alias}
1561 build_tooldir=${tooldir}
1562
1563 # Generate default definitions for YACC, M4, LEX and other programs that run
1564 # on the build machine.  These are used if the Makefile can't locate these
1565 # programs in objdir.
1566 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
1567 AC_CHECK_PROGS([CONFIGURED_BISON], [bison], [$MISSING bison])
1568 AC_CHECK_PROGS([CONFIGURED_YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
1569 AC_CHECK_PROGS([CONFIGURED_M4], [gm4 gnum4 m4], [$MISSING m4])
1570 AC_CHECK_PROGS([CONFIGURED_FLEX], [flex], [$MISSING flex])
1571 AC_CHECK_PROGS([CONFIGURED_LEX], [flex lex], [$MISSING flex])
1572 AC_CHECK_PROGS([CONFIGURED_MAKEINFO], makeinfo, [$MISSING makeinfo])
1573
1574 # Create a .gdbinit file which runs the one in srcdir
1575 # and tells GDB to look there for source files.
1576
1577 if test -r ${srcdir}/.gdbinit ; then
1578   case ${srcdir} in
1579     .) ;;
1580     *) cat > ./.gdbinit <<EOF
1581 # ${NO_EDIT}
1582 dir ${srcdir}
1583 dir .
1584 source ${srcdir}/.gdbinit
1585 EOF
1586     ;;
1587   esac
1588 fi
1589
1590 # Make sure that the compiler is able to generate an executable.  If it
1591 # can't, we are probably in trouble.  We don't care whether we can run the
1592 # executable--we might be using a cross compiler--we only care whether it
1593 # can be created.  At this point the main configure script has set CC.
1594 we_are_ok=no
1595 echo "int main () { return 0; }" > conftest.c
1596 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
1597 if test $? = 0 ; then
1598   if test -s conftest || test -s conftest.exe ; then
1599     we_are_ok=yes
1600   fi
1601 fi
1602 case $we_are_ok in
1603   no)
1604     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
1605     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
1606     rm -f conftest*
1607     exit 1
1608     ;;
1609 esac
1610 rm -f conftest*
1611
1612 # The Solaris /usr/ucb/cc compiler does not appear to work.
1613 case "${host}" in
1614   sparc-sun-solaris2*)
1615       CCBASE="`echo ${CC-cc} | sed 's/ .*$//'`"
1616       if test "`type $CCBASE | sed 's/^[[^/]]*//'`" = "/usr/ucb/cc" ; then
1617           could_use=
1618           test -d /opt/SUNWspro/bin && could_use="/opt/SUNWspro/bin"
1619           if test -d /opt/cygnus/bin ; then
1620               if test "$could_use" = "" ; then
1621                   could_use="/opt/cygnus/bin"
1622               else
1623                   could_use="$could_use or /opt/cygnus/bin"
1624               fi
1625           fi
1626         if test "$could_use" = "" ; then
1627             echo "Warning: compilation may fail because you're using"
1628             echo "/usr/ucb/cc.  You should change your PATH or CC "
1629             echo "variable and rerun configure."
1630         else
1631             echo "Warning: compilation may fail because you're using"
1632             echo "/usr/ucb/cc, when you should use the C compiler from"
1633             echo "$could_use.  You should change your"
1634             echo "PATH or CC variable and rerun configure."
1635         fi
1636       fi
1637   ;;
1638 esac
1639
1640 # If no --enable-shared nor --disable-shared is specified, we set up
1641 # LD_LIBRARY_PATH when we build for gcc.
1642 case $enable_shared in
1643 "")
1644   if test -d ${srcdir}/gcc; then
1645     set_lib_path=yes
1646   else
1647     set_lib_path=no
1648   fi
1649   ;;
1650 *)
1651   set_lib_path=$enable_shared
1652   ;;
1653 esac
1654
1655 # If --enable-shared was set, we must set LD_LIBRARY_PATH so that the
1656 # binutils tools will find libbfd.so.
1657 case "${set_lib_path}" in
1658   no) SET_LIB_PATH= ;;
1659   *) SET_LIB_PATH="\$(REALLY_SET_LIB_PATH)" ;;
1660 esac
1661
1662 case "${host}" in
1663   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
1664   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
1665 esac
1666
1667 # Record target_configdirs and the configure arguments for target and
1668 # build configuration in Makefile.
1669 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
1670 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
1671
1672 # Determine whether gdb needs tk/tcl or not.
1673 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
1674 # and in that case we want gdb to be built without tk.  Ugh!
1675 # In fact I believe gdb is the *only* package directly dependent on tk,
1676 # so we should be able to put the 'maybe's in unconditionally and
1677 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
1678 # 100% sure that that's safe though.
1679
1680 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
1681 case "$enable_gdbtk" in
1682   no)
1683     GDB_TK="" ;;
1684   yes)
1685     GDB_TK="${gdb_tk}" ;;
1686   *)
1687     # Only add the dependency on gdbtk when GDBtk is part of the gdb
1688     # distro.  Eventually someone will fix this and move Insight, nee
1689     # gdbtk to a separate directory.
1690     if test -d ${srcdir}/gdb/gdbtk ; then
1691       GDB_TK="${gdb_tk}"
1692     else
1693       GDB_TK=""
1694     fi
1695     ;;
1696 esac
1697
1698 # Strip out unwanted targets.
1699
1700 # While at that, we remove Makefiles if we were started for recursive
1701 # configuration, so that the top-level Makefile reconfigures them,
1702 # like we used to do when configure itself was recursive.
1703
1704 # Loop over modules.  $extrasub must be used with care, limiting as
1705 # much as possible the usage of range addresses.  That's because autoconf
1706 # splits the sed script to overcome limits in the number of commands,
1707 # and relying on carefully-timed sed passes may turn out to be very hard
1708 # to maintain later.  In this particular case, you just have to be careful
1709 # not to nest @if/@endif pairs, because configure will not warn you at all.
1710
1711 AC_ARG_ENABLE([bootstrap],
1712 [  --enable-bootstrap[=lean]     Enable bootstrapping [no]],,
1713 enable_bootstrap=default)
1714
1715 # Issue errors and warnings for invalid/strange bootstrap combinations.
1716 case "$configdirs" in
1717   *gcc*) have_compiler=yes ;;
1718   *) have_compiler=no ;;
1719 esac
1720
1721 case "$have_compiler:$host:$target:$enable_bootstrap" in
1722   *:*:*:no) ;;
1723
1724   # Default behavior.  (We'll) enable bootstrap if we have a compiler
1725   # and we are in a native configuration.
1726   yes:$build:$build:default)
1727     # This will become 'yes'
1728     enable_bootstrap=no ;;
1729
1730   *:*:*:default)
1731     enable_bootstrap=no ;;
1732
1733   # We have a compiler and we are in a native configuration, bootstrap is ok
1734   yes:$build:$build:yes | yes:$build:$build:lean)
1735     ;;
1736
1737   # Other configurations, but we have a compiler.  Assume the user knows
1738   # what he's doing.
1739   yes:*:*:yes | yes:*:*:lean)
1740     AC_MSG_WARN([trying to bootstrap a cross compiler])
1741     ;;
1742
1743   # No compiler: if they passed --enable-bootstrap explicitly, fail
1744   no:*:*:yes | no:*:*:lean)
1745     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1746
1747   # Fail if wrong command line
1748   *)
1749     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1750     ;;
1751 esac
1752
1753 # Adjust the toplevel makefile according to whether bootstrap was selected.
1754 case "$enable_bootstrap" in
1755   yes)
1756     bootstrap_lean='#'
1757     default_target=bootstrap
1758     bootstrap_suffix=bootstrap ;;
1759   lean)
1760     bootstrap_lean=''
1761     default_target=bootstrap
1762     bootstrap_suffix=bootstrap ;;
1763   no)
1764     default_target=all
1765     bootstrap_suffix=no-bootstrap ;;
1766 esac
1767 AC_SUBST(bootstrap_lean)
1768 AC_SUBST(default_target)
1769
1770 for module in ${build_configdirs} ; do
1771   if test -z "${no_recursion}" \
1772      && test -f ${build_subdir}/${module}/Makefile; then
1773     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
1774     rm -f ${build_subdir}/${module}/Makefile
1775   fi
1776   extrasub="$extrasub
1777 /^@if build-$module\$/d
1778 /^@endif build-$module\$/d
1779 /^@if build-$module-$bootstrap_suffix\$/d
1780 /^@endif build-$module-$bootstrap_suffix\$/d"
1781 done
1782 for module in ${configdirs} ; do
1783   if test -z "${no_recursion}" \
1784      && test -f ${module}/Makefile; then
1785     echo 1>&2 "*** removing ${module}/Makefile to force reconfigure"
1786     rm -f ${module}/Makefile
1787   fi
1788   extrasub="$extrasub
1789 /^@if $module\$/d
1790 /^@endif $module\$/d
1791 /^@if $module-$bootstrap_suffix\$/d
1792 /^@endif $module-$bootstrap_suffix\$/d"
1793 done
1794 for module in ${target_configdirs} ; do
1795   if test -z "${no_recursion}" \
1796      && test -f ${target_subdir}/${module}/Makefile; then
1797     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
1798     rm -f ${target_subdir}/${module}/Makefile
1799   fi
1800   extrasub="$extrasub
1801 /^@if target-$module\$/d
1802 /^@endif target-$module\$/d
1803 /^@if target-$module-$bootstrap_suffix\$/d
1804 /^@endif target-$module-$bootstrap_suffix\$/d"
1805 done
1806
1807 extrasub="$extrasub
1808 /^@if /,/^@endif /d"
1809
1810 # Create the serialization dependencies.  This uses a temporary file.
1811
1812 AC_ARG_ENABLE([serial-configure],
1813 [  --enable-serial-[{host,target,build}-]configure
1814                           Force sequential configuration of
1815                           sub-packages for the host, target or build
1816                           machine, or all sub-packages])
1817
1818 case ${enable_serial_configure} in
1819   yes)
1820     enable_serial_build_configure=yes
1821     enable_serial_host_configure=yes
1822     enable_serial_target_configure=yes
1823     ;;
1824 esac
1825
1826 # These force 'configure's to be done one at a time, to avoid problems
1827 # with contention over a shared config.cache.
1828 rm -f serdep.tmp
1829 echo '# serdep.tmp' > serdep.tmp
1830 olditem=
1831 test "x${enable_serial_build_configure}" = xyes &&
1832 for item in ${build_configdirs} ; do
1833   case ${olditem} in
1834     "") ;;
1835     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
1836   esac
1837   olditem=${item}
1838 done
1839 olditem=
1840 test "x${enable_serial_host_configure}" = xyes &&
1841 for item in ${configdirs} ; do
1842   case ${olditem} in
1843     "") ;;
1844     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
1845   esac
1846   olditem=${item}
1847 done
1848 olditem=
1849 test "x${enable_serial_target_configure}" = xyes &&
1850 for item in ${target_configdirs} ; do
1851   case ${olditem} in
1852     "") ;;
1853     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
1854   esac
1855   olditem=${item}
1856 done
1857 serialization_dependencies=serdep.tmp
1858 AC_SUBST_FILE(serialization_dependencies)
1859
1860 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
1861 # target and nonopt.  These are the ones we might not want to pass
1862 # down to subconfigures.  Also strip program-prefix, program-suffix,
1863 # and program-transform-name, so that we can pass down a consistent
1864 # program-transform-name.  If autoconf has put single quotes around
1865 # any of these arguments (because they contain shell metacharacters)
1866 # then this will fail; in practice this only happens for
1867 # --program-transform-name, so be sure to override --program-transform-name
1868 # at the end of the argument list.
1869 # These will be expanded by make, so quote '$'.
1870 cat <<\EOF_SED > conftestsed
1871 s/ --no[[^ ]]*/ /g
1872 s/ --c[[a-z-]]*[[= ]][[^ ]]*//g
1873 s/ --sr[[a-z-]]*[[= ]][[^ ]]*//g
1874 s/ --ho[[a-z-]]*[[= ]][[^ ]]*//g
1875 s/ --bu[[a-z-]]*[[= ]][[^ ]]*//g
1876 s/ --t[[a-z-]]*[[= ]][[^ ]]*//g
1877 s/ --program-[[pst]][[a-z-]]*[[= ]][[^ ]]*//g
1878 s/ -cache-file[[= ]][[^ ]]*//g
1879 s/ -srcdir[[= ]][[^ ]]*//g
1880 s/ -host[[= ]][[^ ]]*//g
1881 s/ -build[[= ]][[^ ]]*//g
1882 s/ -target[[= ]][[^ ]]*//g
1883 s/ -program-prefix[[= ]][[^ ]]*//g
1884 s/ -program-suffix[[= ]][[^ ]]*//g
1885 s/ -program-transform-name[[= ]][[^ ]]*//g
1886 s/ [[^' -][^ ]*] / /
1887 s/^ *//;s/ *$//
1888 s,\$,$$,g
1889 EOF_SED
1890 sed -f conftestsed <<EOF_SED > conftestsed.out
1891  ${ac_configure_args}
1892 EOF_SED
1893 baseargs=`cat conftestsed.out`
1894 rm -f conftestsed conftestsed.out
1895
1896 # Add in --program-transform-name, after --program-prefix and
1897 # --program-suffix have been applied to it.  Autoconf has already
1898 # doubled dollar signs and backslashes in program_transform_name; we want
1899 # the backslashes un-doubled, and then the entire thing wrapped in single
1900 # quotes, because this will be expanded first by make and then by the shell.
1901 # Also, because we want to override the logic in subdir configure scripts to
1902 # choose program_transform_name, replace any s,x,x, with s,y,y,.
1903 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
1904 ${program_transform_name}
1905 EOF_SED
1906 gcc_transform_name=`cat conftestsed.out`
1907 rm -f conftestsed.out
1908 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
1909
1910 # For the build-side libraries, we just need to pretend we're native,
1911 # and not use the same cache file.  Multilibs are neither needed nor
1912 # desired.
1913 build_configargs="--cache-file=../config.cache --build=${build_alias} --host=${build_alias} --target=${target_alias} ${baseargs}"
1914
1915 # For host modules, accept cache file option, or specification as blank.
1916 case "${cache_file}" in
1917 "") # empty
1918   cache_file_option="" ;;
1919 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
1920   cache_file_option="--cache-file=${cache_file}" ;;
1921 *) # relative path
1922   cache_file_option="--cache-file=../${cache_file}" ;;
1923 esac
1924
1925 # Host dirs don't like to share a cache file either, horribly enough.
1926 # This seems to be due to autoconf 2.5x stupidity.
1927 host_configargs="--cache-file=./config.cache --build=${build_alias} --host=${host_alias} --target=${target_alias} ${extra_host_args} ${baseargs}"
1928
1929 target_configargs=${baseargs}
1930
1931 # Passing a --with-cross-host argument lets the target libraries know
1932 # whether they are being built with a cross-compiler or being built
1933 # native.  However, it would be better to use other mechanisms to make the
1934 # sorts of decisions they want to make on this basis.  Please consider
1935 # this option to be deprecated.  FIXME.
1936 if test x${is_cross_compiler} = xyes ; then
1937   target_configargs="--with-cross-host=${host_alias} ${target_configargs}"
1938 fi
1939
1940 # Default to --enable-multilib.
1941 if test x${enable_multilib} = x ; then
1942   target_configargs="--enable-multilib ${target_configargs}"
1943 fi
1944
1945 # Pass --with-newlib if appropriate.  Note that target_configdirs has
1946 # changed from the earlier setting of with_newlib.
1947 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
1948   target_configargs="--with-newlib ${target_configargs}"
1949 fi
1950
1951 # Different target subdirs use different values of certain variables
1952 # (notably CXX).  Worse, multilibs use *lots* of different values.
1953 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
1954 # it doesn't automatically accept command-line overrides of them.
1955 # This means it's not safe for target subdirs to share a cache file,
1956 # which is disgusting, but there you have it.  Hopefully this can be
1957 # fixed in future.  It's still worthwhile to use a cache file for each
1958 # directory.  I think.
1959
1960 # Pass the appropriate --host, --build, and --cache-file arguments.
1961 target_configargs="--cache-file=./config.cache --host=${target_alias} --build=${build_alias} ${target_configargs}"
1962
1963 # provide a proper gxx_include_dir.
1964 # Note, if you change the default, make sure to fix both here and in
1965 # the gcc and libstdc++-v3 subdirectories.
1966 # Check whether --with-gxx-include-dir or --without-gxx-include-dir was given.
1967 case "${with_gxx_include_dir}" in
1968   yes)
1969     AC_MSG_ERROR([--with-gxx-include-dir=[[dir]] requires a directory])
1970     ;;
1971   no | "")
1972     case "${enable_version_specific_runtime_libs}" in
1973       yes) gxx_include_dir='${libsubdir}/include/c++' ;;
1974       *)
1975         . ${srcdir}/config.if
1976         gxx_include_dir='${prefix}/include/'${libstdcxx_incdir} ;;
1977     esac ;;
1978   *) gxx_include_dir=${with_gxx_include_dir} ;;
1979 esac
1980
1981 FLAGS_FOR_TARGET=
1982 case " $target_configdirs " in
1983  *" newlib "*)
1984   case " $target_configargs " in
1985   *" --with-newlib "*)
1986    case "$target" in
1987    *-cygwin*)
1988      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/include -isystem $$s/winsup/cygwin/include -isystem $$s/winsup/w32api/include' ;;
1989    esac
1990
1991    # If we're not building GCC, don't discard standard headers.
1992    if test -d ${srcdir}/gcc; then
1993      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
1994
1995      if test "${build}" != "${host}"; then
1996        # On Canadian crosses, CC_FOR_TARGET will have already been set
1997        # by `configure', so we won't have an opportunity to add -Bgcc/
1998        # to it.  This is right: we don't want to search that directory
1999        # for binaries, but we want the header files in there, so add
2000        # them explicitly.
2001        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/gcc/include'
2002
2003        # Someone might think of using the pre-installed headers on
2004        # Canadian crosses, in case the installed compiler is not fully
2005        # compatible with the compiler being built.  In this case, it
2006        # would be better to flag an error than risking having
2007        # incompatible object files being constructed.  We can't
2008        # guarantee that an error will be flagged, but let's hope the
2009        # compiler will do it, when presented with incompatible header
2010        # files.
2011      fi
2012    fi
2013
2014    case "${target}-${is_cross_compiler}" in
2015    i[[3456789]]86-*-linux*-no)
2016       # Here host == target, so we don't need to build gcc,
2017       # so we don't want to discard standard headers.
2018       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
2019       ;;
2020    *)
2021       # If we're building newlib, use its generic headers last, but search
2022       # for any libc-related directories first (so make it the last -B
2023       # switch).
2024       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
2025       ;;
2026    esac
2027    ;;
2028   esac
2029   ;;
2030 esac
2031
2032 # Allow the user to override the flags for
2033 # our build compiler if desired.
2034 CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
2035
2036 # On Canadian crosses, we'll be searching the right directories for
2037 # the previously-installed cross compiler, so don't bother to add
2038 # flags for directories within the install tree of the compiler
2039 # being built; programs in there won't even run.
2040 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
2041   # Search for pre-installed headers if nothing else fits.
2042   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
2043 fi
2044
2045 if test "x${use_gnu_ld}" = x &&
2046    echo " ${configdirs} " | grep " ld " > /dev/null ; then
2047   # Arrange for us to find uninstalled linker scripts.
2048   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/ld'
2049 fi
2050
2051 if test "x${CC_FOR_TARGET+set}" = xset; then
2052   :
2053 elif test -d ${srcdir}/gcc; then
2054   CC_FOR_TARGET='$$r/gcc/xgcc -B$$r/gcc/'
2055 elif test "$host" = "$target"; then
2056   CC_FOR_TARGET='$(CC)'
2057 else
2058   CC_FOR_TARGET=`echo gcc | sed "${program_transform_name}"`
2059 fi
2060 CC_FOR_TARGET=$CC_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2061
2062 if test "x${GCJ_FOR_TARGET+set}" = xset; then
2063   :
2064 elif test -d ${srcdir}/gcc; then
2065   GCJ_FOR_TARGET='$$r/gcc/gcj -B$$r/gcc/'
2066 elif test "$host" = "$target"; then
2067   GCJ_FOR_TARGET='gcj'
2068 else
2069   GCJ_FOR_TARGET=`echo gcj | sed "${program_transform_name}"`
2070 fi
2071 GCJ_FOR_TARGET=$GCJ_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2072
2073 if test "x${GFORTRAN_FOR_TARGET+set}" = xset; then
2074   :
2075 elif test -d ${srcdir}/gcc; then
2076   GFORTRAN_FOR_TARGET='$$r/gcc/gfortran -B$$r/gcc/'
2077 elif test "$host" = "$target"; then
2078   GFORTRAN_FOR_TARGET='gfortran'
2079 else
2080   GFORTRAN_FOR_TARGET=`echo gfortran | sed "${program_transform_name}"`
2081 fi
2082 case $GFORTRAN_FOR_TARGET in
2083 *' $(FLAGS_FOR_TARGET)') ;;
2084 *) GFORTRAN_FOR_TARGET=$GFORTRAN_FOR_TARGET' $(FLAGS_FOR_TARGET)' ;;
2085 esac
2086
2087 # Don't use libstdc++-v3's flags to configure/build itself.
2088 libstdcxx_flags='`test ! -f $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags || $(SHELL) $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags --build-includes` -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs'
2089 raw_libstdcxx_flags='-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs'
2090
2091 if test "x${CXX_FOR_TARGET+set}" = xset; then
2092   if test "x${RAW_CXX_FOR_TARGET+set}" != xset; then
2093     RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2094   fi
2095 elif test -d ${srcdir}/gcc; then
2096   # We add -shared-libgcc to CXX_FOR_TARGET whenever we use xgcc instead
2097   # of g++ for linking C++ or Java, because g++ has -shared-libgcc by
2098   # default whereas gcc does not.
2099   # RAW_CXX_FOR_TARGET is for linking C++ or java; CXX_FOR_TARGET is for
2100   # all other cases.
2101   CXX_FOR_TARGET='$$r/gcc/g++ -B$$r/gcc/ -nostdinc++ '$libstdcxx_flags
2102   RAW_CXX_FOR_TARGET='$$r/gcc/xgcc -shared-libgcc -B$$r/gcc/ -nostdinc++ '$raw_libstdcxx_flags
2103 elif test "$host" = "$target"; then
2104   CXX_FOR_TARGET='$(CXX)'
2105   RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2106 else
2107   CXX_FOR_TARGET=`echo c++ | sed "${program_transform_name}"`
2108   RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2109 fi
2110 CXX_FOR_TARGET=$CXX_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2111 RAW_CXX_FOR_TARGET=$RAW_CXX_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2112
2113 qCXX_FOR_TARGET=`echo "$CXX_FOR_TARGET" | sed 's,[[&%]],\\\&,g'`
2114 qRAW_CXX_FOR_TARGET=`echo "$RAW_CXX_FOR_TARGET" | sed 's,[[&%]],\\\&,g'`
2115
2116 # We want to defer the evaluation of `cmd`s and shell variables in
2117 # CXX_FOR_TARGET when recursing in the top-level Makefile, such as for
2118 # bootstrap.  We'll enclose CXX_FOR_TARGET_FOR_RECURSIVE_MAKE in single
2119 # quotes, but we still have to duplicate `$'s so that shell variables
2120 # can be expanded by the nested make as shell variables, not as make
2121 # macros.
2122 qqCXX_FOR_TARGET=`echo "$qCXX_FOR_TARGET" | sed -e 's,[[$]][[$]],$$$$,g'`
2123 qqRAW_CXX_FOR_TARGET=`echo "$qRAW_CXX_FOR_TARGET" | sed -e 's,[[$]][[$]],$$$$,g'`
2124
2125 # Wrap CC_FOR_TARGET and friends, for certain types of builds.
2126 CC_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${CC_FOR_TARGET}"
2127 GCJ_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${GCJ_FOR_TARGET}"
2128 GFORTRAN_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${GFORTRAN_FOR_TARGET}"
2129 CXX_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${qCXX_FOR_TARGET}"
2130 RAW_CXX_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${qRAW_CXX_FOR_TARGET}"
2131 CXX_FOR_TARGET_FOR_RECURSIVE_MAKE="\$(STAGE_CC_WRAPPER) ${qqCXX_FOR_TARGET}"
2132 RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE="\$(STAGE_CC_WRAPPER) ${qqRAW_CXX_FOR_TARGET}"
2133
2134 # Makefile fragments.
2135 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
2136 do
2137   eval fragval=\$$frag
2138   if test $fragval != /dev/null; then
2139     eval $frag=${srcdir}/$fragval
2140   fi
2141 done
2142 AC_SUBST_FILE(host_makefile_frag)
2143 AC_SUBST_FILE(target_makefile_frag)
2144 AC_SUBST_FILE(alphaieee_frag)
2145 AC_SUBST_FILE(ospace_frag)
2146
2147 # Miscellanea: directories, flags, etc.
2148 AC_SUBST(SET_LIB_PATH)
2149 AC_SUBST(RPATH_ENVVAR)
2150 AC_SUBST(BUILD_PREFIX)
2151 AC_SUBST(BUILD_PREFIX_1)
2152 AC_SUBST(tooldir)
2153 AC_SUBST(build_tooldir)
2154 AC_SUBST(GDB_TK)
2155 AC_SUBST(gxx_include_dir)
2156 AC_SUBST(libstdcxx_incdir)
2157
2158 # Build module lists & subconfigure args.
2159 AC_SUBST(build_configargs)
2160 AC_SUBST(build_configdirs)
2161
2162 # Host module lists & subconfigure args.
2163 AC_SUBST(host_configargs)
2164 AC_SUBST(configdirs)
2165
2166 # Target module lists & subconfigure args.
2167 AC_SUBST(target_configargs)
2168 AC_SUBST(target_configdirs)
2169
2170 # Build tools.
2171 AC_SUBST(CC_FOR_BUILD)
2172 AC_SUBST(config_shell)
2173
2174 # Host tools.
2175 NCN_STRICT_CHECK_TOOL(AR, ar)
2176 NCN_STRICT_CHECK_TOOL(AS, as)
2177 NCN_STRICT_CHECK_TOOL(DLLTOOL, dlltool)
2178 NCN_STRICT_CHECK_TOOL(LD, ld)
2179 NCN_STRICT_CHECK_TOOL(NM, nm)
2180 NCN_STRICT_CHECK_TOOL(RANLIB, ranlib, :)
2181 NCN_STRICT_CHECK_TOOL(WINDRES, windres)
2182 NCN_STRICT_CHECK_TOOL(OBJCOPY, objcopy)
2183 NCN_STRICT_CHECK_TOOL(OBJDUMP, objdump)
2184 AC_SUBST(CC)
2185 AC_SUBST(CXX)
2186 AC_SUBST(CFLAGS)
2187 AC_SUBST(CFLAGS_FOR_BUILD)
2188 AC_SUBST(CXXFLAGS)
2189
2190 # Target tools.
2191 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_AR_FOR_TARGET, ar)
2192 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_AS_FOR_TARGET, as)
2193 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_DLLTOOL_FOR_TARGET, dlltool)
2194 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_LD_FOR_TARGET, ld)
2195 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_NM_FOR_TARGET, nm)
2196 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_RANLIB_FOR_TARGET, ranlib, :)
2197 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_WINDRES_FOR_TARGET, windres)
2198
2199 AC_SUBST(GCC_FOR_TARGET)
2200 AC_SUBST(FLAGS_FOR_TARGET)
2201 AC_SUBST(CC_FOR_TARGET)
2202 AC_SUBST(GCJ_FOR_TARGET)
2203 AC_SUBST(GFORTRAN_FOR_TARGET)
2204 AC_SUBST(CXX_FOR_TARGET)
2205 AC_SUBST(RAW_CXX_FOR_TARGET)
2206 AC_SUBST(CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)
2207 AC_SUBST(RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)
2208
2209 # Fix up target tools.
2210 if test "x${build}" = "x${host}" ; then
2211   # In this case, the newly built tools can and should be used,
2212   # so we override the results of the autoconf tests.
2213   # This should really only happen when the tools are actually being built,
2214   # but that's a further refinement.  The new build scheme, where
2215   # tools are built into a structure paralleling where they're installed,
2216   # should also eliminate all of this cleanly.
2217   AR_FOR_TARGET="\$(USUAL_AR_FOR_TARGET)"
2218   AS_FOR_TARGET="\$(USUAL_AS_FOR_TARGET)"
2219   DLLTOOL_FOR_TARGET="\$(USUAL_DLLTOOL_FOR_TARGET)"
2220   LD_FOR_TARGET="\$(USUAL_LD_FOR_TARGET)"
2221   NM_FOR_TARGET="\$(USUAL_NM_FOR_TARGET)"
2222   RANLIB_FOR_TARGET="\$(USUAL_RANLIB_FOR_TARGET)"
2223   WINDRES_FOR_TARGET="\$(USUAL_WINDRES_FOR_TARGET)"
2224 else
2225   # Just use the ones we found.
2226   AR_FOR_TARGET="\$(CONFIGURED_AR_FOR_TARGET)"
2227   AS_FOR_TARGET="\$(CONFIGURED_AS_FOR_TARGET)"
2228   DLLTOOL_FOR_TARGET="\$(CONFIGURED_DLLTOOL_FOR_TARGET)"
2229   LD_FOR_TARGET="\$(CONFIGURED_LD_FOR_TARGET)"
2230   NM_FOR_TARGET="\$(CONFIGURED_NM_FOR_TARGET)"
2231   RANLIB_FOR_TARGET="\$(CONFIGURED_RANLIB_FOR_TARGET)"
2232   WINDRES_FOR_TARGET="\$(CONFIGURED_WINDRES_FOR_TARGET)"
2233 fi
2234 AC_SUBST(AR_FOR_TARGET)
2235 AC_SUBST(AS_FOR_TARGET)
2236 AC_SUBST(DLLTOOL_FOR_TARGET)
2237 AC_SUBST(LD_FOR_TARGET)
2238 AC_SUBST(NM_FOR_TARGET)
2239 AC_SUBST(RANLIB_FOR_TARGET)
2240 AC_SUBST(WINDRES_FOR_TARGET)
2241
2242 # Certain tools may need extra flags.
2243 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
2244 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
2245 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
2246
2247 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2248 AC_ARG_ENABLE(maintainer-mode,
2249 [  --enable-maintainer-mode enable make rules and dependencies not useful
2250                           (and sometimes confusing) to the casual installer],
2251       USE_MAINTAINER_MODE=$enableval,
2252       USE_MAINTAINER_MODE=no)
2253 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2254 AC_SUBST(MAINTAINER_MODE_TRUE)
2255 AC_SUBST(MAINTAINER_MODE_FALSE)
2256 if test "$USE_MAINTAINER_MODE" = yes; then
2257   MAINTAINER_MODE_TRUE=
2258   MAINTAINER_MODE_FALSE='#'
2259 else
2260   MAINTAINER_MODE_TRUE='#'
2261   MAINTAINER_MODE_FALSE=
2262 fi
2263 MAINT=$MAINTAINER_MODE_TRUE
2264 AC_SUBST(MAINT)dnl
2265
2266 # ---------------------
2267 # GCC bootstrap support
2268 # ---------------------
2269
2270 # Stage specific cflags for build.
2271 stage1_cflags="-g"
2272 case $build in
2273   vax-*-*)
2274     case ${GCC} in
2275       yes) stage1_cflags="-g -Wa,-J" ;;
2276       *) stage1_cflags="-g -J" ;;
2277     esac ;;
2278   powerpc-*-darwin*)
2279     # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
2280     # sources; use -no-cpp-precomp to get to GNU cpp.
2281     # Apple's GCC has bugs in designated initializer handling, so disable
2282     # that too.
2283     stage1_cflags="-g -no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
2284     ;;
2285 esac
2286 AC_SUBST(stage1_cflags)
2287
2288 # It makes debugging easier if we create as symlinks the stage directories
2289 # gcc for stageN-gcc and stagePREV-gcc for stage(N-1).  In case this is not
2290 # possible, however, we can resort to mv.
2291 AC_CACHE_CHECK([if symbolic links between directories work],
2292 [gcc_cv_prog_ln_s_dir],
2293 [if test "${LN_S}" = "ln -s" \
2294    && mkdir confdir.s1 \
2295    && ln -s confdir.s1 confdir.s2 \
2296    && echo timestamp1 > confdir.s1/conftest.1 \
2297    && cmp confdir.s1/conftest.1 confdir.s2/conftest.1 \
2298    && echo timestamp2 > confdir.s2/conftest.2 \
2299    && cmp confdir.s1/conftest.2 confdir.s1/conftest.2 \
2300    && rm -f confdir.s2; then
2301   gcc_cv_prog_ln_s_dir=yes
2302 else
2303   gcc_cv_prog_ln_s_dir=yes
2304 fi
2305 rm -rf confdir.s1 confdir.s2])
2306
2307 case ${gcc_cv_prog_ln_s_dir} in
2308   yes)
2309     CREATE_LINK_TO_DIR='ln -s $$1 $$2'
2310     UNDO_LINK_TO_DIR='rm -f $$1' ;;
2311   *)
2312     CREATE_LINK_TO_DIR='mv $$1 $$2'
2313     UNDO_LINK_TO_DIR='mv $$1 $$2' ;;
2314 esac
2315 AC_SUBST(CREATE_LINK_TO_DIR)
2316 AC_SUBST(UNDO_LINK_TO_DIR)
2317
2318 # Enable -Werror in bootstrap stage2 and later.
2319 # Change the default to "no" on release branches.
2320 AC_ARG_ENABLE(werror,
2321 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
2322 [enable_werror=yes])
2323 case ${enable_werror} in
2324   yes) stage2_werror_flag="--enable-werror-always" ;;
2325   *) stage2_werror_flag="" ;;
2326 esac
2327 AC_SUBST(stage2_werror_flag)
2328
2329 # If gcc is built natively with shared library enabled, set
2330 # $RPATH_ENVVAR to make sure the newly built gcc shared librares are
2331 # used.
2332 SET_GCC_LIB_PATH=
2333 if test -d ${srcdir}/gcc && test x${is_cross_compiler} = xno; then
2334   case "${set_lib_path}" in
2335     no) ;;
2336     *)
2337       eval "d=\$$RPATH_ENVVAR"
2338       if test x"$d" != x; then
2339         d="$pwd/gcc:$d"
2340       else
2341         d="$pwd/gcc"
2342     fi
2343     SET_GCC_LIB_PATH="\$(RPATH_ENVVAR)=$d; export \$(RPATH_ENVVAR);"
2344     ;;
2345   esac
2346 fi
2347 AC_SUBST(SET_GCC_LIB_PATH)
2348
2349 AC_OUTPUT(Makefile)