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
  23 AC_INIT(move-if-change)
  24 AC_PREREQ(2.13)
  25 AC_CANONICAL_SYSTEM
  26 AC_ARG_PROGRAM
  27
  28 # Get 'install' or 'install-sh' and its variants.
  29 AC_PROG_INSTALL
  30 ACX_PROG_LN
  31 AC_PROG_LN_S
  32
  33 ### we might need to use some other shell than /bin/sh for running subshells
  34 ### If we are on Windows, search for the shell.  This will permit people
  35 ### to not have /bin/sh, but to be able to see /SOME/PATH/sh configure
  36 ### without also having to set CONFIG_SHELL.  This code will work when
  37 ### using bash, which sets OSTYPE.
  38 case "${OSTYPE}" in
  39 *win32*)
  40   if test x${CONFIG_SHELL} = x ; then
  41     if test ! -f /bin/sh ; then
  42       if test x${SHELL} != x && test -f ${SHELL} ; then
  43         CONFIG_SHELL=${SHELL}
  44         export CONFIG_SHELL
  45       else
  46         for prog in sh sh.exe bash bash.exe; do
  47           IFS="${IFS=   }"; save_ifs="$IFS"; IFS="${IFS}:"
  48           for dir in $PATH; do
  49             test -z "$dir" && dir=.
  50             if test -f $dir/$prog; then
  51               CONFIG_SHELL=$dir/$prog
  52               export CONFIG_SHELL
  53               break
  54             fi
  55           done
  56           IFS="$save_ifs"
  57           test -n "${CONFIG_SHELL}" && break
  58         done
  59       fi
  60     fi
  61   fi
  62   ;;
  63 esac
  64
  65 config_shell=${CONFIG_SHELL-/bin/sh}
  66
  67 progname=$0
  68 # if PWD already has a value, it is probably wrong.
  69 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  70
  71 # Export original configure arguments for use by sub-configures.  These
  72 # will be expanded by make, so quote '$'.
  73 tmp="$progname $@"
  74 sed -e 's,\$,$$,g' <<EOF_SED > conftestsed.out
  75 $tmp
  76 EOF_SED
  77 TOPLEVEL_CONFIGURE_ARGUMENTS=`cat conftestsed.out`
  78 rm -f conftestsed.out
  79 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  80
  81 moveifchange=${srcdir}/move-if-change
  82
  83 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  84
  85 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  86 # a relative path.
  87 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  88   INSTALL="${srcpwd}/install-sh -c"
  89 fi
  90
  91 # Set srcdir to "." if that's what it is.
  92 # This is important for multilib support.
  93 pwd=`${PWDCMD-pwd}`
  94 if test "${pwd}" = "${srcpwd}" ; then
  95   srcdir=.
  96 fi
  97
  98 topsrcdir=$srcpwd
  99
 100 extra_host_args=
 101
 102 ### To add a new directory to the tree, first choose whether it is a target
 103 ### or a host dependent tool.  Then put it into the appropriate list
 104 ### (library or tools, host or target), doing a dependency sort.
 105
 106 # Subdirs will be configured in the order listed in build_configdirs,
 107 # configdirs, or target_configdirs; see the serialization section below.
 108
 109 # Dependency sorting is only needed when *configuration* must be done in
 110 # a particular order.  In all cases a dependency should be specified in
 111 # the Makefile, whether or not it's implicitly specified here.
 112
 113 # Double entries in build_configdirs, configdirs, or target_configdirs may
 114 # cause circular dependencies and break everything horribly.
 115
 116 # these library is used by various programs built for the build
 117 # environment
 118 #
 119 build_libs="build-libiberty"
 120
 121 # these tools are built for the build environment
 122 build_tools="build-texinfo build-byacc build-flex build-bison build-m4 build-fixincludes"
 123
 124 # these libraries are used by various programs built for the host environment
 125 #
 126 host_libs="intl mmalloc libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp"
 127
 128 # these tools are built for the host environment
 129 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 130 # know that we are building the simulator.
 131 # binutils, gas and ld appear in that order because it makes sense to run
 132 # "make check" in that particular order.
 133 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 gnattools"
 134
 135 # libgcj represents the runtime libraries only used by gcj.
 136 libgcj="target-libffi \
 137         target-boehm-gc \
 138         target-zlib \
 139         target-qthreads \
 140         target-libjava"
 141
 142 # these libraries are built for the target environment, and are built after
 143 # the host libraries and the host tools (which may be a cross compiler)
 144 #
 145 target_libraries="target-libiberty \
 146                 target-libgloss \
 147                 target-newlib \
 148                 target-libstdc++-v3 \
 149                 target-libmudflap \
 150                 target-libgfortran \
 151                 ${libgcj} \
 152                 target-libobjc \
 153                 target-libada"
 154
 155 # these tools are built using the target libraries, and are intended to
 156 # run only in the target environment
 157 #
 158 # note: any program that *uses* libraries that are in the "target_libraries"
 159 # list belongs in this list.  those programs are also very likely
 160 # candidates for the "native_only" list which follows
 161 #
 162 target_tools="target-examples target-groff target-gperf target-rda"
 163
 164 ################################################################################
 165
 166 ## All tools belong in one of the four categories, and are assigned above
 167 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 168 ## is important because configure will choke if they ever get through.
 169 ## ${configdirs} is directories we build using the host tools.
 170 ## ${target_configdirs} is directories we build using the target tools.
 171 configdirs=`echo ${host_libs} ${host_tools}`
 172 target_configdirs=`echo ${target_libraries} ${target_tools}`
 173 build_configdirs=`echo ${build_libs} ${build_tools}`
 174
 175 ################################################################################
 176
 177 srcname="gnu development package"
 178
 179 # This gets set non-empty for some net releases of packages.
 180 appdirs=""
 181
 182 # Define is_cross_compiler to save on calls to 'test'.
 183 is_cross_compiler=
 184 if test x"${host}" = x"${target}" ; then
 185   is_cross_compiler=no
 186 else
 187   is_cross_compiler=yes
 188 fi
 189
 190 # Find the build and target subdir names.
 191 GCC_TOPLEV_SUBDIRS
 192
 193 # Skipdirs are removed silently.
 194 skipdirs=
 195 # Noconfigdirs are removed loudly.
 196 noconfigdirs=""
 197
 198 use_gnu_ld=
 199 # Make sure we don't let GNU ld be added if we didn't want it.
 200 if test x$with_gnu_ld = xno ; then
 201   use_gnu_ld=no
 202   noconfigdirs="$noconfigdirs ld"
 203 fi
 204
 205 use_gnu_as=
 206 # Make sure we don't let GNU as be added if we didn't want it.
 207 if test x$with_gnu_as = xno ; then
 208   use_gnu_as=no
 209   noconfigdirs="$noconfigdirs gas"
 210 fi
 211
 212 # some tools are so dependent upon X11 that if we're not building with X,
 213 # it's not even worth trying to configure, much less build, that tool.
 214
 215 case ${with_x} in
 216   yes | "") ;; # the default value for this tree is that X11 is available
 217   no)
 218     skipdirs="${skipdirs} tk itcl libgui"
 219     # We won't be able to build gdbtk without X.
 220     enable_gdbtk=no
 221     ;;
 222   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 223 esac
 224
 225 # Some tools are only suitable for building in a "native" situation.
 226 # Remove these if host!=target.
 227 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"
 228
 229 # Similarly, some are only suitable for cross toolchains.
 230 # Remove these if host=target.
 231 cross_only="target-libgloss target-newlib target-opcodes"
 232
 233 case $is_cross_compiler in
 234   no) skipdirs="${skipdirs} ${cross_only}" ;;
 235   yes) skipdirs="${skipdirs} ${native_only}" ;;
 236 esac
 237
 238 # If both --with-headers and --with-libs are specified, default to
 239 # --without-newlib.
 240 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 241    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 242   if test x"${with_newlib}" = x ; then
 243     with_newlib=no
 244   fi
 245 fi
 246
 247 # Recognize --with-newlib/--without-newlib.
 248 case ${with_newlib} in
 249   no) skipdirs="${skipdirs} target-newlib" ;;
 250   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 251 esac
 252
 253 # Configure extra directories which are host specific
 254
 255 case "${host}" in
 256   *-cygwin*)
 257     configdirs="$configdirs libtermcap" ;;
 258 esac
 259
 260 # A target can indicate whether a language isn't supported for some reason.
 261 # Only spaces may be used in this macro; not newlines or tabs.
 262 unsupported_languages=
 263
 264 # Remove more programs from consideration, based on the host or
 265 # target this usually means that a port of the program doesn't
 266 # exist yet.
 267
 268 case "${host}" in
 269   hppa*64*-*-*)
 270     noconfigdirs="$noconfigdirs byacc"
 271     ;;
 272   i[[3456789]]86-*-vsta)
 273     noconfigdirs="$noconfigdirs tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl itcl gnuserv gettext"
 274     ;;
 275   i[[3456789]]86-*-go32* | i[[3456789]]86-*-msdosdjgpp*)
 276     noconfigdirs="$noconfigdirs tcl tk expect dejagnu send-pr uudecode guile itcl gnuserv libffi"
 277     ;;
 278   i[[3456789]]86-*-mingw32*)
 279     # noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl itcl gnuserv"
 280     noconfigdirs="$noconfigdirs expect dejagnu autoconf automake send-pr rcs guile perl texinfo libtool"
 281     ;;
 282   i[[3456789]]86-*-beos*)
 283     noconfigdirs="$noconfigdirs tk itcl libgui gdb"
 284     ;;
 285   *-*-cygwin*)
 286     noconfigdirs="$noconfigdirs autoconf automake send-pr rcs guile perl"
 287     ;;
 288   *-*-netbsd*)
 289     noconfigdirs="$noconfigdirs rcs"
 290     ;;
 291   ppc*-*-pe)
 292     noconfigdirs="$noconfigdirs patch diff make tk tcl expect dejagnu autoconf automake texinfo bison send-pr gprof rcs guile perl itcl gnuserv"
 293     ;;
 294   powerpc-*-beos*)
 295     noconfigdirs="$noconfigdirs tk itcl libgui gdb dejagnu readline"
 296     ;;
 297 esac
 298
 299
 300 AC_ARG_ENABLE(libada,
 301 [  --enable-libada        Builds libada directory],
 302 ENABLE_LIBADA=$enableval,
 303 ENABLE_LIBADA=yes)
 304 if test "${ENABLE_LIBADA}" != "yes" ; then
 305   noconfigdirs="$noconfigdirs target-libada"
 306   noconfigdirs="$noconfigdirs gnattools"
 307 fi
 308
 309 AC_ARG_ENABLE(libssp,
 310 [  --enable-libssp        Builds libssp directory],
 311 ENABLE_LIBSSP=$enableval,
 312 ENABLE_LIBSSP=yes)
 313 if test "${ENABLE_LIBSSP}" != "yes" ; then
 314   noconfigdirs="$noconfigdirs configure-target-libssp target-libssp"
 315 fi
 316
 317 # Save it here so that, even in case of --enable-libgcj, if the Java
 318 # front-end isn't enabled, we still get libgcj disabled.
 319 libgcj_saved=$libgcj
 320 case $enable_libgcj in
 321 yes)
 322   # If we reset it here, it won't get added to noconfigdirs in the
 323   # target-specific build rules, so it will be forcibly enabled
 324   # (unless the Java language itself isn't enabled).
 325   libgcj=
 326   ;;
 327 no)
 328   # Make sure we get it printed in the list of not supported target libs.
 329   noconfigdirs="$noconfigdirs ${libgcj}"
 330   ;;
 331 esac
 332
 333
 334 # Allow --disable-libmudflap to exclude target-libmudflap
 335 case $enable_libmudflap in
 336 yes)
 337     ;;
 338 no)
 339     noconfigdirs="$noconfigdirs target-libmudflap"
 340     ;;
 341 "")
 342     case "${target}" in
 343     *-*-linux*-gnu | *-*-gnu* | *-*-k*bsd*-gnu)
 344         # Enable libmudflap by default in GNU and friends.
 345         ;;
 346     *-*-freebsd*)
 347         # Enable libmudflap by default in FreeBSD.
 348         ;;
 349     *)
 350         # Disable it by default everywhere else.
 351         noconfigdirs="$noconfigdirs target-libmudflap"
 352         ;;
 353     esac
 354 esac
 355
 356
 357 case "${target}" in
 358   *-*-chorusos)
 359     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 360     ;;
 361   powerpc-*-darwin*)
 362     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes gdb gprof"
 363     noconfigdirs="$noconfigdirs sim target-rda"
 364     ;;
 365   *-*-darwin*)
 366     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes gdb gprof"
 367     noconfigdirs="$noconfigdirs sim target-rda"
 368     noconfigdirs="$noconfigdirs ${libgcj}"
 369     ;;
 370   *-*-freebsd[[12]] | *-*-freebsd[[12]].* | *-*-freebsd*aout*)
 371     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 372     ;;
 373   *-*-freebsd*)
 374     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 375     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 376         && test -f /usr/local/include/gmp.h; then
 377       with_gmp=/usr/local
 378     fi
 379
 380     # Skip some stuff that's unsupported on some FreeBSD configurations.
 381     case "${target}" in
 382       i*86-*-*) ;;
 383       alpha*-*-*) ;;
 384       *)
 385         noconfigdirs="$noconfigdirs ${libgcj}"
 386         ;;
 387     esac
 388     ;;
 389   *-*-kaos*)
 390     # Remove unsupported stuff on all kaOS configurations.
 391     skipdirs="target-libiberty ${libgcj} target-libstdc++-v3 target-librx"
 392     skipdirs="$skipdirs target-libobjc target-examples target-groff target-gperf"
 393     skipdirs="$skipdirs zlib fastjar target-libjava target-boehm-gc target-zlib"
 394     noconfigdirs="$noconfigdirs target-libgloss"
 395     ;;
 396   *-*-netbsd*)
 397     # Skip some stuff on all NetBSD configurations.
 398     noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss"
 399
 400     # Skip some stuff that's unsupported on some NetBSD configurations.
 401     case "${target}" in
 402       i*86-*-netbsdelf*) ;;
 403       arm*-*-netbsdelf*) ;;
 404       *)
 405         noconfigdirs="$noconfigdirs ${libgcj}"
 406         ;;
 407     esac
 408     ;;
 409   *-*-netware*)
 410     noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss ${libgcj} target-libmudflap"
 411     ;;
 412   *-*-rtems*)
 413     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 414     ;;
 415   *-*-uclinux*)
 416     noconfigdirs="$noconfigdirs target-newlib target-libgloss target-rda ${libgcj}"
 417     ;;
 418   *-*-vxworks*)
 419     noconfigdirs="$noconfigdirs target-newlib target-libgloss target-libiberty ${libgcj}"
 420     ;;
 421   alpha*-dec-osf*)
 422     # ld works, but does not support shared libraries.
 423     # newlib is not 64 bit ready.  I'm not sure about fileutils.
 424     # gas doesn't generate exception information.
 425     noconfigdirs="$noconfigdirs gas ld fileutils target-newlib target-libgloss"
 426     ;;
 427   alpha*-*-*vms*)
 428     noconfigdirs="$noconfigdirs gdb ld target-newlib target-libgloss ${libgcj}"
 429     ;;
 430   alpha*-*-linux*)
 431     # newlib is not 64 bit ready
 432     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 433     ;;
 434   alpha*-*-*)
 435     # newlib is not 64 bit ready
 436     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 437     ;;
 438   am33_2.0-*-linux*)
 439     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
 440     ;;
 441   sh-*-linux*)
 442     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
 443     ;;
 444   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 445     noconfigdirs="$noconfigdirs ${libgcj}"
 446     noconfigdirs="$noconfigdirs target-examples"
 447     noconfigdirs="$noconfigdirs target-libiberty texinfo send-pr"
 448     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 449     noconfigdirs="$noconfigdirs expect dejagnu"
 450     # the C++ libraries don't build on top of CE's C libraries
 451     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 452     noconfigdirs="$noconfigdirs target-newlib"
 453     case "${host}" in
 454       *-*-cygwin*) ;; # keep gdb and readline
 455       *) noconfigdirs="$noconfigdirs gdb readline"
 456          ;;
 457     esac
 458     ;;
 459   arc-*-*)
 460     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 461     ;;
 462   arm-semi-aof )
 463     ;;
 464   arm-*-coff | strongarm-*-coff | xscale-*-coff)
 465     noconfigdirs="$noconfigdirs ${libgcj}"
 466     ;;
 467   arm-*-elf* | strongarm-*-elf* | xscale-*-elf* | arm*-*-eabi* )
 468     noconfigdirs="$noconfigdirs target-libffi target-qthreads"
 469     ;;
 470   arm*-*-symbianelf*)
 471     noconfigdirs="$noconfigdirs ${libgcj} target-libiberty"
 472     ;;
 473   arm-*-pe*)
 474     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 475     ;;
 476   thumb-*-coff)
 477     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 478     ;;
 479   thumb-*-elf)
 480     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 481     ;;
 482   thumb-*-pe)
 483     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 484     ;;
 485   arm-*-riscix*)
 486     noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
 487     ;;
 488   avr-*-*)
 489     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 490     ;;
 491   c4x-*-* | tic4x-*-*)
 492     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 493     ;;
 494   c54x*-*-* | tic54x-*-*)
 495     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj} gcc gdb newlib"
 496     ;;
 497   cris-*-* | crisv32-*-*)
 498     unsupported_languages="$unsupported_languages java"
 499     case "${target}" in
 500       *-*-aout)
 501         unsupported_languages="$unsupported_languages f95"
 502         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 503       *-*-elf)
 504         unsupported_languages="$unsupported_languages f95"
 505         noconfigdirs="$noconfigdirs target-boehm-gc";;
 506       *-*-linux*)
 507         noconfigdirs="$noconfigdirs target-newlib target-libgloss";;
 508       *)
 509         unsupported_languages="$unsupported_languages f95"
 510         noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss";;
 511     esac
 512     ;;
 513   crx-*-*)
 514     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-mudflap ${libgcj}"
 515     ;;
 516   d10v-*-*)
 517     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 518     ;;
 519   d30v-*-*)
 520     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 521     ;;
 522   fr30-*-elf*)
 523     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 524     ;;
 525   frv-*-*)
 526     noconfigdirs="$noconfigdirs ${libgcj}"
 527     ;;
 528   h8300*-*-*)
 529     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 530     ;;
 531   h8500-*-*)
 532     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 533     ;;
 534   hppa1.1-*-osf* | hppa1.1-*-bsd* )
 535     ;;
 536   hppa*64*-*-linux* | parisc*64*-*-linux*)
 537     # In this case, it's because the hppa64-linux target is for
 538     # the kernel only at this point and has no libc, and thus no
 539     # headers, crt*.o, etc., all of which are needed by these.
 540     noconfigdirs="$noconfigdirs target-zlib"
 541     ;;
 542   parisc*-*-linux* | hppa*-*-linux*)
 543     ;;
 544   hppa*-*-*elf* | \
 545   hppa*-*-lites* | \
 546   hppa*-*-openbsd* | \
 547   hppa*64*-*-*)
 548     noconfigdirs="$noconfigdirs ${libgcj}"
 549     ;;
 550   hppa*-*-*)
 551     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 552     # build on HP-UX 10.20.
 553     noconfigdirs="$noconfigdirs ld shellutils ${libgcj}"
 554     ;;
 555   i960-*-*)
 556     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 557     ;;
 558   ia64*-*-elf*)
 559     # No gdb support yet.
 560     noconfigdirs="$noconfigdirs readline mmalloc libgui itcl gdb"
 561     ;;
 562   ia64*-**-hpux*)
 563     # No gdb or ld support yet.
 564     noconfigdirs="$noconfigdirs ${libgcj} readline mmalloc libgui itcl gdb ld"
 565     ;;
 566   i370-*-opened*)
 567     ;;
 568   i[[3456789]]86-*-coff | i[[3456789]]86-*-elf)
 569     noconfigdirs="$noconfigdirs ${libgcj}"
 570     ;;
 571   i[[3456789]]86-*-linux*)
 572     # The GCC port for glibc1 has no MD_FALLBACK_FRAME_STATE_FOR, so let's
 573     # not build java stuff by default.
 574     case "${target}" in
 575       *-*-*libc1*)
 576         noconfigdirs="$noconfigdirs ${libgcj}";;
 577     esac
 578
 579     # This section makes it possible to build newlib natively on linux.
 580     # If we are using a cross compiler then don't configure newlib.
 581     if test x${is_cross_compiler} != xno ; then
 582       noconfigdirs="$noconfigdirs target-newlib"
 583     fi
 584     noconfigdirs="$noconfigdirs target-libgloss"
 585     # If we are not using a cross compiler, do configure newlib.
 586     # Note however, that newlib will only be configured in this situation
 587     # if the --with-newlib option has been given, because otherwise
 588     # 'target-newlib' will appear in skipdirs.
 589     ;;
 590   i[[3456789]]86-*-mingw32*)
 591     target_configdirs="$target_configdirs target-mingw"
 592     noconfigdirs="$noconfigdirs expect target-libgloss ${libgcj}"
 593
 594     # Can't build gdb for mingw32 if not native.
 595     case "${host}" in
 596       i[[3456789]]86-*-mingw32) ;; # keep gdb tcl tk expect etc.
 597       *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl gnuserv"
 598          ;;
 599     esac
 600     ;;
 601   *-*-cygwin*)
 602     target_configdirs="$target_configdirs target-libtermcap target-winsup"
 603     noconfigdirs="$noconfigdirs target-gperf target-libgloss ${libgcj}"
 604     # always build newlib if winsup directory is present.
 605     if test -d "$srcdir/winsup"; then
 606       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 607     elif test -d "$srcdir/newlib"; then
 608       echo "Warning: winsup is missing so newlib can't be built."
 609     fi
 610
 611     # Can't build gdb for Cygwin if not native.
 612     case "${host}" in
 613       *-*-cygwin*) ;; # keep gdb tcl tk expect etc.
 614       *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl libgui gnuserv"
 615          ;;
 616     esac
 617     ;;
 618   i[[3456789]]86-moss-msdos | i[[3456789]]86-*-moss* | \
 619   i[[3456789]]86-*-uwin* | i[[3456789]]86-*-interix* )
 620     ;;
 621   i[[3456789]]86-*-pe)
 622     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 623     ;;
 624   i[[3456789]]86-*-sco3.2v5*)
 625     # The linker does not yet know about weak symbols in COFF,
 626     # and is not configured to handle mixed ELF and COFF.
 627     noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
 628     ;;
 629   i[[3456789]]86-*-sco*)
 630     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 631     ;;
 632   i[[3456789]]86-*-solaris2*)
 633     noconfigdirs="$noconfigdirs target-libgloss"
 634     ;;
 635   i[[3456789]]86-*-sysv4*)
 636     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 637     ;;
 638   i[[3456789]]86-*-beos*)
 639     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
 640     ;;
 641   m32r-*-*)
 642     noconfigdirs="$noconfigdirs ${libgcj}"
 643     ;;
 644   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 645     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 646     ;;
 647   m68k-*-elf*)
 648     noconfigdirs="$noconfigdirs ${libgcj}"
 649     ;;
 650   m68k-*-coff*)
 651     noconfigdirs="$noconfigdirs ${libgcj}"
 652     ;;
 653   mcore-*-pe*)
 654   # The EPOC C++ environment does not support exceptions or rtti,
 655   # and so building libstdc++-v3 tends not to always work.
 656     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 657     ;;
 658   mmix-*-*)
 659     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc gdb libgloss"
 660     unsupported_languages="$unsupported_languages f95 java"
 661     ;;
 662   mn10200-*-*)
 663     noconfigdirs="$noconfigdirs ${libgcj}"
 664     ;;
 665   mn10300-*-*)
 666     noconfigdirs="$noconfigdirs ${libgcj}"
 667     ;;
 668   ms1-*-*)
 669     noconfigdirs="$noconfigdirs sim"
 670     ;;
 671   powerpc-*-aix*)
 672     # copied from rs6000-*-* entry
 673     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 674     ;;
 675   powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
 676     target_configdirs="$target_configdirs target-winsup"
 677     noconfigdirs="$noconfigdirs gdb tcl tk make expect target-libgloss itcl gnuserv ${libgcj}"
 678     # always build newlib.
 679     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 680     ;;
 681     # This is temporary until we can link against shared libraries
 682   powerpcle-*-solaris*)
 683     noconfigdirs="$noconfigdirs gdb sim make tcl tk expect itcl gnuserv ${libgcj}"
 684     ;;
 685   powerpc-*-beos*)
 686     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
 687     ;;
 688   powerpc-*-eabi)
 689     noconfigdirs="$noconfigdirs ${libgcj}"
 690     ;;
 691   powerpc-*-eabi* | powerpcle-*-eabi* | powerpc-*-rtems* )
 692     ;;
 693   rs6000-*-lynxos*)
 694     noconfigdirs="$noconfigdirs target-newlib gprof ${libgcj}"
 695     ;;
 696   rs6000-*-aix*)
 697     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 698     ;;
 699   rs6000-*-*)
 700     noconfigdirs="$noconfigdirs gprof ${libgcj}"
 701     ;;
 702   m68k-apollo-*)
 703     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss ${libgcj}"
 704     ;;
 705   mips*-*-irix5*)
 706     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 707     ;;
 708   mips*-*-irix6*)
 709     # Linking libjava exceeds command-line length limits on at least
 710     # IRIX 6.2, but not on IRIX 6.5.
 711     # Also, boehm-gc won't build on IRIX 6.5, according to Jeffrey Oldham
 712     # <oldham@codesourcery.com>
 713     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 714     ;;
 715   mips*-dec-bsd*)
 716     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 717     ;;
 718   mips*-*-bsd*)
 719     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 720     ;;
 721   mipstx39-*-*)
 722     noconfigdirs="$noconfigdirs gprof ${libgcj}"   # same as generic mips
 723     ;;
 724   mips64*-*-linux*)
 725     noconfigdirs="$noconfigdirs target-newlib ${libgcj}"
 726     ;;
 727   mips*-*-linux*)
 728     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 729     ;;
 730   mips*-*-*)
 731     noconfigdirs="$noconfigdirs gprof ${libgcj}"
 732     ;;
 733   romp-*-*)
 734     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss ${libgcj}"
 735     ;;
 736   sh-*-* | sh64-*-*)
 737     case "${host}" in
 738       i[[3456789]]86-*-vsta) ;; # don't add gprof back in
 739       i[[3456789]]86-*-go32*) ;; # don't add gprof back in
 740       i[[3456789]]86-*-msdosdjgpp*) ;; # don't add gprof back in
 741       *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
 742     esac
 743     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 744     ;;
 745   sparc-*-elf*)
 746     noconfigdirs="$noconfigdirs ${libgcj}"
 747     ;;
 748   sparc64-*-elf*)
 749     noconfigdirs="$noconfigdirs ${libgcj}"
 750     ;;
 751   sparclite-*-*)
 752     noconfigdirs="$noconfigdirs ${libgcj}"
 753     ;;
 754   sparc-*-sunos4*)
 755     noconfigdirs="$noconfigdirs ${libgcj}"
 756     if test x${is_cross_compiler} != xno ; then
 757            noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 758     else
 759            use_gnu_ld=no
 760     fi
 761     ;;
 762   sparc-*-solaris2.[[0-6]] | sparc-*-solaris2.[[0-6]].*)
 763     noconfigdirs="$noconfigdirs ${libgcj}"
 764     ;;
 765   sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
 766     ;;
 767   v810-*-*)
 768     noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libstdc++-v3 opcodes target-libgloss ${libgcj}"
 769     ;;
 770   v850-*-*)
 771     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 772     ;;
 773   v850e-*-*)
 774     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 775     ;;
 776   v850ea-*-*)
 777     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 778     ;;
 779   vax-*-vms)
 780     noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes target-libgloss ${libgcj}"
 781     ;;
 782   vax-*-*)
 783     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 784     ;;
 785   xtensa-*-*)
 786     noconfigdirs="$noconfigdirs ${libgcj}"
 787     ;;
 788   ip2k-*-*)
 789     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 790     ;;
 791   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
 792     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 793     ;;
 794   *-*-lynxos*)
 795     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 796     ;;
 797   *-*-*)
 798     noconfigdirs="$noconfigdirs ${libgcj}"
 799     ;;
 800 esac
 801
 802 # If we aren't building newlib, then don't build libgloss, since libgloss
 803 # depends upon some newlib header files.
 804 case "${noconfigdirs}" in
 805   *target-libgloss*) ;;
 806   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
 807 esac
 808
 809 # Work in distributions that contain no compiler tools, like Autoconf.
 810 tentative_cc=""
 811 host_makefile_frag=/dev/null
 812 if test -d ${srcdir}/config ; then
 813 case "${host}" in
 814   m68k-hp-hpux*)
 815     # Avoid "too much defining" errors from HPUX compiler.
 816     tentative_cc="cc -Wp,-H256000"
 817     # If "ar" in $PATH is GNU ar, the symbol table may need rebuilding.
 818     # If it's HP/UX ar, this should be harmless.
 819     RANLIB="ar ts"
 820     ;;
 821   m68k-apollo-sysv*)
 822     tentative_cc="cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DUSG"
 823     ;;
 824   m68k-apollo-bsd*)
 825     #None of the Apollo compilers can compile gas or binutils.  The preprocessor
 826     # chokes on bfd, the compiler won't let you assign integers to enums, and
 827     # other problems.  Defining CC to gcc is a questionable way to say "don't use
 828     # the apollo compiler" (the preferred version of GCC could be called cc,
 829     # or whatever), but I'm not sure leaving CC as cc is any better...
 830     #CC=cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DNO_STDARG
 831     # Used to have BISON=yacc.
 832     tentative_cc=gcc
 833     ;;
 834   m88k-dg-dgux*)
 835     tentative_cc="gcc -Wall -ansi -D__using_DGUX"
 836     ;;
 837   m88k-harris-cxux*)
 838     # Under CX/UX, we want to tell the compiler to use ANSI mode.
 839     tentative_cc="cc -Xa"
 840     host_makefile_frag="config/mh-cxux"
 841     ;;
 842   m88k-motorola-sysv*)
 843     ;;
 844   mips*-dec-ultrix*)
 845     tentative_cc="cc -Wf,-XNg1000"
 846     host_makefile_frag="config/mh-decstation"
 847     ;;
 848   mips*-nec-sysv4*)
 849     # The C compiler on NEC MIPS SVR4 needs bigger tables.
 850     tentative_cc="cc -ZXNd=5000 -ZXNg=1000"
 851     host_makefile_frag="config/mh-necv4"
 852     ;;
 853   mips*-sgi-irix4*)
 854     # Tell compiler to use K&R C.  We can't compile under the SGI Ansi
 855     # environment.  Also bump switch table size so that cp-parse will
 856     # compile.  Bump string length limit so linker builds.
 857     tentative_cc="cc -cckr -Wf,-XNg1500 -Wf,-XNk1000 -Wf,-XNh2000 -Wf,-XNl8192"
 858     ;;
 859   mips*-*-sysv4*)
 860     host_makefile_frag="config/mh-sysv4"
 861     ;;
 862   mips*-*-sysv*)
 863     # This is for a MIPS running RISC/os 4.52C.
 864
 865     # This is needed for GDB, but needs to be in the top-level make because
 866     # if a library is compiled with the bsd headers and gets linked with the
 867     # sysv system libraries all hell can break loose (e.g. a jmp_buf might be
 868     # a different size).
 869     # ptrace(2) apparently has problems in the BSD environment.  No workaround is
 870     # known except to select the sysv environment.  Could we use /proc instead?
 871     # These "sysv environments" and "bsd environments" often end up being a pain.
 872     #
 873     # This is not part of CFLAGS because perhaps not all C compilers have this
 874     # option.
 875     tentative_cc="cc -systype sysv"
 876     ;;
 877   i370-ibm-opened*)
 878     tentative_cc="c89"
 879     ;;
 880   i[[3456789]]86-*-sysv5*)
 881     host_makefile_frag="config/mh-sysv5"
 882     ;;
 883   i[[3456789]]86-*-dgux*)
 884     tentative_cc="gcc -Wall -ansi -D__using_DGUX"
 885     host_makefile_frag="config/mh-dgux386"
 886     ;;
 887   i[[3456789]]86-ncr-sysv4.3*)
 888     # The MetaWare compiler will generate a copyright message unless you
 889     # turn it off by adding the -Hnocopyr flag.
 890     tentative_cc="cc -Hnocopyr"
 891     ;;
 892   i[[3456789]]86-ncr-sysv4*)
 893     # for an NCR 3000 (i486/SVR4) system.
 894     # The NCR 3000 ships with a MetaWare compiler installed as /bin/cc.
 895     # This compiler not only emits obnoxious copyright messages every time
 896     # you run it, but it chokes and dies on a whole bunch of GNU source
 897     # files.  Default to using the AT&T compiler installed in /usr/ccs/ATT/cc.
 898     tentative_cc="/usr/ccs/ATT/cc"
 899     host_makefile_frag="config/mh-ncr3000"
 900     ;;
 901   i[[3456789]]86-*-sco3.2v5*)
 902     ;;
 903   i[[3456789]]86-*-sco*)
 904     # The native C compiler botches some simple uses of const.  Unfortunately,
 905     # it doesn't defined anything like "__sco__" for us to test for in ansidecl.h.
 906     tentative_cc="cc -Dconst="
 907     host_makefile_frag="config/mh-sco"
 908     ;;
 909   i[[3456789]]86-*-udk*)
 910     host_makefile_frag="config/mh-sysv5"
 911     ;;
 912   i[[3456789]]86-*-solaris2*)
 913     host_makefile_frag="config/mh-sysv4"
 914     ;;
 915   i[[3456789]]86-*-msdosdjgpp*)
 916     host_makefile_frag="config/mh-djgpp"
 917     ;;
 918   *-cygwin*)
 919     host_makefile_frag="config/mh-cygwin"
 920     ;;
 921   *-mingw32*)
 922     ;;
 923   *-interix*)
 924     host_makefile_frag="config/mh-interix"
 925     ;;
 926   vax-*-ultrix2*)
 927     # The old BSD pcc isn't up to compiling parts of gdb so use gcc
 928     tentative_cc=gcc
 929     ;;
 930   *-*-solaris2*)
 931     host_makefile_frag="config/mh-solaris"
 932     ;;
 933   m68k-sun-sunos*)
 934     # Sun's C compiler needs the -J flag to be able to compile cp-parse.c
 935     # without overflowing the jump tables (-J says to use a 32 bit table)
 936     tentative_cc="cc -J"
 937     ;;
 938   *-hp-hpux*)
 939     tentative_cc="cc -Wp,-H256000"
 940     ;;
 941   *-*-hiux*)
 942     tentative_cc="cc -Wp,-H256000"
 943     ;;
 944   rs6000-*-lynxos*)
 945     # /bin/cc is less than useful for our purposes.  Always use GCC
 946     tentative_cc="/usr/cygnus/progressive/bin/gcc"
 947     host_makefile_frag="config/mh-lynxrs6k"
 948     ;;
 949   powerpc-*-darwin*)
 950     host_makefile_frag="config/mh-ppc-darwin"
 951     ;;
 952   *-*-lynxos*)
 953     # /bin/cc is less than useful for our purposes.  Always use GCC
 954     tentative_cc="/bin/gcc"
 955     ;;
 956   *-*-sysv4*)
 957     host_makefile_frag="config/mh-sysv4"
 958     ;;
 959   # This is placed last to prevent interfering with the cases above.
 960   i[[3456789]]86-*-*)
 961     # Build the stage2 and stage3 compilers with -fomit-frame-pointer.
 962     host_makefile_frag="config/mh-x86omitfp"
 963     ;;
 964 esac
 965 fi
 966
 967 # If we aren't going to be using gcc, see if we can extract a definition
 968 # of CC from the fragment.
 969 # Actually, use the 'pre-extracted' version above.
 970 if test -z "${CC}" && test "${build}" = "${host}" ; then
 971   IFS="${IFS=   }"; save_ifs="$IFS"; IFS="${IFS}:"
 972   found=
 973   for dir in $PATH; do
 974     test -z "$dir" && dir=.
 975     if test -f $dir/gcc; then
 976       found=yes
 977       break
 978     fi
 979   done
 980   IFS="$save_ifs"
 981   if test -z "${found}" && test -n "${tentative_cc}" ; then
 982     CC=$tentative_cc
 983   fi
 984 fi
 985
 986 if test "${build}" != "${host}" ; then
 987   # If we are doing a Canadian Cross, in which the host and build systems
 988   # are not the same, we set reasonable default values for the tools.
 989
 990   CC=${CC-${host_alias}-gcc}
 991   CFLAGS=${CFLAGS-"-g -O2"}
 992   CXX=${CXX-${host_alias}-c++}
 993   CXXFLAGS=${CXXFLAGS-"-g -O2"}
 994   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
 995   CC_FOR_TARGET=${CC_FOR_TARGET-${target_alias}-gcc}
 996   CXX_FOR_TARGET=${CXX_FOR_TARGET-${target_alias}-c++}
 997   GCJ_FOR_TARGET=${GCJ_FOR_TARGET-${target_alias}-gcj}
 998   GCC_FOR_TARGET=${GCC_FOR_TARGET-${CC_FOR_TARGET-${target_alias}-gcc}}
 999   BUILD_PREFIX=${build_alias}-
1000   BUILD_PREFIX_1=${build_alias}-
1001
1002 else
1003   # Set reasonable default values for some tools even if not Canadian.
1004   # Of course, these are different reasonable default values, originally
1005   # specified directly in the Makefile.
1006   # We don't export, so that autoconf can do its job.
1007   # Note that all these settings are above the fragment inclusion point
1008   # in Makefile.in, so can still be overridden by fragments.
1009   # This is all going to change when we autoconfiscate...
1010
1011   CC_FOR_BUILD="\$(CC)"
1012   GCC_FOR_TARGET="\$(USUAL_GCC_FOR_TARGET)"
1013   BUILD_PREFIX=
1014   BUILD_PREFIX_1=loser-
1015
1016   AC_PROG_CC
1017
1018   # We must set the default linker to the linker used by gcc for the correct
1019   # operation of libtool.  If LD is not defined and we are using gcc, try to
1020   # set the LD default to the ld used by gcc.
1021   if test -z "$LD"; then
1022     if test "$GCC" = yes; then
1023       case $build in
1024       *-*-mingw*)
1025         gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1026       *)
1027         gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1028       esac
1029       case $gcc_prog_ld in
1030       # Accept absolute paths.
1031       [[\\/]* | [A-Za-z]:[\\/]*)]
1032         LD="$gcc_prog_ld" ;;
1033       esac
1034     fi
1035   fi
1036
1037   CXX=${CXX-"c++"}
1038   CFLAGS=${CFLAGS-"-g"}
1039   CXXFLAGS=${CXXFLAGS-"-g -O2"}
1040 fi
1041
1042 ACX_PROG_GNAT
1043 ACX_PROG_CMP_IGNORE_INITIAL
1044
1045 # Check for GMP and MPFR
1046 gmplibs=
1047 gmpinc=
1048 have_gmp=yes
1049 # Specify a location for mpfr
1050 # check for this first so it ends up on the link line before gmp.
1051 AC_ARG_WITH(mpfr-dir, [  --with-mpfr-dir=PATH    Specify source directory for MPFR library])
1052
1053 if test "x$with_mpfr_dir" != x; then
1054   gmpinc="-I$with_mpfr_dir"
1055   gmplibs="$with_mpfr_dir/libmpfr.a"
1056 else
1057   gmplibs="-lmpfr"
1058 fi
1059
1060 AC_ARG_WITH(mpfr, [  --with-mpfr=PATH        Specify directory for installed MPFR library])
1061
1062 if test "x$with_mpfr" != x; then
1063   gmplibs="-L$with_mpfr/lib $gmplibs"
1064   gmpinc="-I$with_mpfr/include"
1065 fi
1066
1067 # Specify a location for gmp
1068 AC_ARG_WITH(gmp-dir, [  --with-gmp-dir=PATH     Specify source directory for GMP library])
1069
1070 if test "x$with_gmp_dir" != x; then
1071   gmpinc="$gmpinc -I$with_gmp_dir"
1072   if test -f "$with_gmp_dir/.libs/libgmp.a"; then
1073     gmplibs="$gmplibs $with_gmp_dir/.libs/libgmp.a"
1074   elif test -f "$with_gmp_dir/_libs/libgmp.a"; then
1075     gmplibs="$gmplibs $with_gmp_dir/_libs/libgmp.a"
1076   fi
1077   # One of the later tests will catch the error if neither library is present.
1078 else
1079   gmplibs="$gmplibs -lgmp"
1080 fi
1081
1082 AC_ARG_WITH(gmp, [  --with-gmp=PATH         Specify directory for installed GMP library])
1083
1084 if test "x$with_gmp" != x; then
1085   gmplibs="-L$with_gmp/lib $gmplibs"
1086   gmpinc="-I$with_gmp/include $gmpinc"
1087 fi
1088
1089 saved_CFLAGS="$CFLAGS"
1090 CFLAGS="$CFLAGS $gmpinc"
1091 # Check GMP actually works
1092 AC_MSG_CHECKING([for correct version of gmp.h])
1093 AC_TRY_COMPILE([#include "gmp.h"],[
1094 #if __GNU_MP_VERSION < 3
1095 choke me
1096 #endif
1097 ], [AC_MSG_RESULT([yes])],
1098   [AC_MSG_RESULT([no]); have_gmp=no])
1099
1100 if test x"$have_gmp" = xyes; then
1101   AC_MSG_CHECKING([for MPFR])
1102
1103   saved_LIBS="$LIBS"
1104   LIBS="$LIBS $gmplibs"
1105   AC_TRY_LINK([#include <gmp.h>
1106 #include <mpfr.h>], [mpfr_t n; mpfr_init(n);],
1107     [AC_MSG_RESULT([yes])],  [AC_MSG_RESULT([no]); have_gmp=no])
1108   LIBS="$saved_LIBS"
1109   CFLAGS="$saved_CFLAGS"
1110 fi
1111
1112 # Flags needed for both GMP and/or MPFR
1113 AC_SUBST(gmplibs)
1114 AC_SUBST(gmpinc)
1115
1116 # By default, C is the only stage 1 language.
1117 stage1_languages=c
1118 AC_SUBST(stage1_languages)
1119
1120 # Figure out what language subdirectories are present.
1121 # Look if the user specified --enable-languages="..."; if not, use
1122 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1123 # go away some day.
1124 # NB:  embedded tabs in this IF block -- do not untabify
1125 if test -d ${srcdir}/gcc; then
1126   if test x"${enable_languages+set}" != xset; then
1127     if test x"${LANGUAGES+set}" = xset; then
1128       enable_languages="${LANGUAGES}"
1129         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1130     else
1131       enable_languages=all
1132     fi
1133   else
1134     if test x"${enable_languages}" = x ||
1135        test x"${enable_languages}" = xyes;
1136        then
1137       echo configure.in: --enable-languages needs at least one language argument 1>&2
1138       exit 1
1139     fi
1140   fi
1141   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1142
1143   # First scan to see if an enabled language requires some other language.
1144   # We assume that a given config-lang.in will list all the language
1145   # front ends it requires, even if some are required indirectly.
1146   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1147     case ${lang_frag} in
1148       ..) ;;
1149       # The odd quoting in the next line works around
1150       # an apparent bug in bash 1.12 on linux.
1151       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1152       *)
1153         # From the config-lang.in, get $language, $lang_requires
1154         language=
1155         lang_requires=
1156         . ${lang_frag}
1157         for other in ${lang_requires} ; do
1158           case ,${enable_languages}, in
1159             *,$other,*) ;;
1160             *,all,*) ;;
1161             *,$language,*)
1162               echo " \`$other' language required by \`$language'; enabling" 1>&2
1163               enable_languages="${enable_languages},${other}"
1164               ;;
1165           esac
1166         done
1167         ;;
1168     esac
1169   done
1170
1171   new_enable_languages=c
1172   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1173   potential_languages=c
1174
1175   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1176     case ${lang_frag} in
1177       ..) ;;
1178       # The odd quoting in the next line works around
1179       # an apparent bug in bash 1.12 on linux.
1180       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1181       *)
1182         # From the config-lang.in, get $language, $target_libs,
1183         # $lang_dirs, $boot_language, and $build_by_default
1184         language=
1185         target_libs=
1186         lang_dirs=
1187         boot_language=
1188         build_by_default=
1189         need_gmp=
1190         . ${lang_frag}
1191         potential_languages="${potential_languages},${language}"
1192         # This is quite sensitive to the ordering of the case statement arms.
1193         case ,${enable_languages},:${language}:${have_gnat}:${build_by_default} in
1194           *::*:*)
1195             echo "${lang_frag} doesn't set \$language." 1>&2
1196             exit 1
1197             ;;
1198           *:ada:no:*)
1199             # Ada was requested with no preexisting GNAT.  Disable unconditionally.
1200             add_this_lang=no
1201             ;;
1202           *,${language},*:*:*:*)
1203             # Language was explicitly selected; include it.
1204             add_this_lang=yes
1205             ;;
1206           *,all,*:*:*:no)
1207             # 'all' was selected, but this is not a default language
1208             # so do not include it.
1209             add_this_lang=no
1210             ;;
1211           *,all,*:*:*:*)
1212             # 'all' was selected and this is a default language; include it.
1213             add_this_lang=yes
1214             ;;
1215           *)
1216             add_this_lang=no
1217             ;;
1218         esac
1219
1220         # Disable languages that need GMP if it isn't available.
1221         case ,${enable_languages},:${have_gmp}:${need_gmp} in
1222           *,${language},*:no:yes)
1223             # Specifically requested language; tell them.
1224             AC_MSG_ERROR([GMP with MPFR support is required to build $language])
1225             ;;
1226           *:no:yes)
1227             # Silently disable.
1228             add_this_lang=no
1229             ;;
1230         esac
1231
1232         # Disable a language that is unsupported by the target.
1233         case " $unsupported_languages " in
1234           *" $language "*)
1235             add_this_lang=no
1236             ;;
1237         esac
1238
1239         case $add_this_lang in
1240           no)
1241             # Remove language-dependent dirs.
1242             eval noconfigdirs='"$noconfigdirs "'\"$target_libs $lang_dirs\"
1243             ;;
1244           *)
1245             new_enable_languages="$new_enable_languages,$language"
1246             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1247             case ${boot_language} in
1248               yes)
1249                 # Add to (comma-separated) list of stage 1 languages.
1250                 stage1_languages="${stage1_languages},${language}"
1251                 ;;
1252             esac
1253             ;;
1254         esac
1255         ;;
1256     esac
1257   done
1258
1259   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
1260   if test "x$missing_languages" != x; then
1261     AC_MSG_ERROR([
1262 The following requested languages could not be built: ${missing_languages}
1263 Recognised languages are: ${potential_languages}])
1264   fi
1265
1266   if test "x$new_enable_languages" != "x$enable_languages"; then
1267     echo The following languages will be built: ${new_enable_languages}
1268   fi
1269   enable_languages="$new_enable_languages"
1270   ac_configure_args=`echo " $ac_configure_args" | sed -e 's/ --enable-languages=[[^ ]]*//' -e 's/$/ --enable-languages='"$enable_languages"/ `
1271 fi
1272
1273 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
1274 # $build_configdirs and $target_configdirs.
1275 # If we have the source for $noconfigdirs entries, add them to $notsupp.
1276
1277 notsupp=""
1278 for dir in . $skipdirs $noconfigdirs ; do
1279   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
1280   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1281     configdirs=`echo " ${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   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1291     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
1292     if test -r $srcdir/$dirname/configure ; then
1293       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1294         true
1295       else
1296         notsupp="$notsupp $dir"
1297       fi
1298     fi
1299   fi
1300   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1301     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
1302     if test -r $srcdir/$dirname/configure ; then
1303       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1304         true
1305       else
1306         notsupp="$notsupp $dir"
1307       fi
1308     fi
1309   fi
1310 done
1311
1312 # Sometimes the tools are distributed with libiberty but with no other
1313 # libraries.  In that case, we don't want to build target-libiberty.
1314 if test -n "${target_configdirs}" ; then
1315   others=
1316   for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
1317     if test "$i" != "libiberty" ; then
1318       if test -r $srcdir/$i/configure ; then
1319         others=yes;
1320         break;
1321       fi
1322     fi
1323   done
1324   if test -z "${others}" ; then
1325     target_configdirs=
1326   fi
1327 fi
1328
1329 # Quietly strip out all directories which aren't configurable in this tree.
1330 # This relies on all configurable subdirectories being autoconfiscated, which
1331 # is now the case.
1332 build_configdirs_all="$build_configdirs"
1333 build_configdirs=
1334 for i in ${build_configdirs_all} ; do
1335   j=`echo $i | sed -e s/build-//g`
1336   if test -f ${srcdir}/$j/configure ; then
1337     build_configdirs="${build_configdirs} $i"
1338   fi
1339 done
1340
1341 configdirs_all="$configdirs"
1342 configdirs=
1343 for i in ${configdirs_all} ; do
1344   if test -f ${srcdir}/$i/configure ; then
1345     configdirs="${configdirs} $i"
1346   fi
1347 done
1348
1349 target_configdirs_all="$target_configdirs"
1350 target_configdirs=
1351 for i in ${target_configdirs_all} ; do
1352   j=`echo $i | sed -e s/target-//g`
1353   if test -f ${srcdir}/$j/configure ; then
1354     target_configdirs="${target_configdirs} $i"
1355   fi
1356 done
1357
1358 # Produce a warning message for the subdirs we can't configure.
1359 # This isn't especially interesting in the Cygnus tree, but in the individual
1360 # FSF releases, it's important to let people know when their machine isn't
1361 # supported by the one or two programs in a package.
1362
1363 if test -n "${notsupp}" && test -z "${norecursion}" ; then
1364   # If $appdirs is non-empty, at least one of those directories must still
1365   # be configured, or we error out.  (E.g., if the gas release supports a
1366   # specified target in some subdirs but not the gas subdir, we shouldn't
1367   # pretend that all is well.)
1368   if test -n "$appdirs" ; then
1369     for dir in $appdirs ; do
1370       if test -r $dir/Makefile.in ; then
1371         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1372           appdirs=""
1373           break
1374         fi
1375         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
1376           appdirs=""
1377           break
1378         fi
1379       fi
1380     done
1381     if test -n "$appdirs" ; then
1382       echo "*** This configuration is not supported by this package." 1>&2
1383       exit 1
1384     fi
1385   fi
1386   # Okay, some application will build, or we don't care to check.  Still
1387   # notify of subdirs not getting built.
1388   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
1389   echo "    ${notsupp}" 1>&2
1390   echo "    (Any other directories should still work fine.)" 1>&2
1391 fi
1392
1393 case "$host" in
1394   *msdosdjgpp*)
1395     enable_gdbtk=no ;;
1396 esac
1397
1398 copy_dirs=
1399
1400 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
1401 # the named directory are copied to $(tooldir)/sys-include.
1402 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
1403   if test x${is_cross_compiler} = xno ; then
1404     echo 1>&2 '***' --with-headers is only supported when cross compiling
1405     exit 1
1406   fi
1407   if test x"${with_headers}" != xyes ; then
1408     case "${exec_prefixoption}" in
1409     "") x=${prefix} ;;
1410     *) x=${exec_prefix} ;;
1411     esac
1412     copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/sys-include"
1413   fi
1414 fi
1415
1416 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
1417 # the name directories are copied to $(tooldir)/lib.  Multiple directories
1418 # are permitted.
1419 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
1420   if test x${is_cross_compiler} = xno ; then
1421     echo 1>&2 '***' --with-libs is only supported when cross compiling
1422     exit 1
1423   fi
1424   if test x"${with_libs}" != xyes ; then
1425     # Copy the libraries in reverse order, so that files in the first named
1426     # library override files in subsequent libraries.
1427     case "${exec_prefixoption}" in
1428     "") x=${prefix} ;;
1429     *) x=${exec_prefix} ;;
1430     esac
1431     for l in ${with_libs}; do
1432       copy_dirs="$l $x/${target_alias}/lib ${copy_dirs}"
1433     done
1434   fi
1435 fi
1436
1437 # Handle ${copy_dirs}
1438 set fnord ${copy_dirs}
1439 shift
1440 while test $# != 0 ; do
1441   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
1442     :
1443   else
1444     echo Copying $1 to $2
1445
1446     # Use the install script to create the directory and all required
1447     # parent directories.
1448     if test -d $2 ; then
1449       :
1450     else
1451       echo >config.temp
1452       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
1453     fi
1454
1455     # Copy the directory, assuming we have tar.
1456     # FIXME: Should we use B in the second tar?  Not all systems support it.
1457     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
1458
1459     # It is the responsibility of the user to correctly adjust all
1460     # symlinks.  If somebody can figure out how to handle them correctly
1461     # here, feel free to add the code.
1462
1463     echo $1 > $2/COPIED
1464   fi
1465   shift; shift
1466 done
1467
1468 extra_arflags_for_target=
1469 extra_nmflags_for_target=
1470 extra_ranlibflags_for_target=
1471 target_makefile_frag=/dev/null
1472 case "${target}" in
1473   *-*-netware*)
1474     target_makefile_frag="config/mt-netware"
1475     ;;
1476   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
1477     target_makefile_frag="config/mt-gnu"
1478     ;;
1479   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
1480     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
1481     # commands to handle both 32-bit and 64-bit objects.  These flags are
1482     # harmless if we're using GNU nm or ar.
1483     extra_arflags_for_target=" -X32_64"
1484     extra_nmflags_for_target=" -B -X32_64"
1485     ;;
1486   *-*-darwin*)
1487     # ranlib from Darwin requires the -c flag to look at common symbols.
1488     extra_ranlibflags_for_target=" -c"
1489     ;;
1490   mips*-*-pe | sh*-*-pe | *arm-wince-pe)
1491     target_makefile_frag="config/mt-wince"
1492     ;;
1493 esac
1494
1495 alphaieee_frag=/dev/null
1496 case $target in
1497   alpha*-*-*)
1498     # This just makes sure to use the -mieee option to build target libs.
1499     # This should probably be set individually by each library.
1500     alphaieee_frag="config/mt-alphaieee"
1501     ;;
1502 esac
1503
1504 # If --enable-target-optspace always use -Os instead of -O2 to build
1505 # the target libraries, similarly if it is not specified, use -Os
1506 # on selected platforms.
1507 ospace_frag=/dev/null
1508 case "${enable_target_optspace}:${target}" in
1509   yes:*)
1510     ospace_frag="config/mt-ospace"
1511     ;;
1512   :d30v-*)
1513     ospace_frag="config/mt-d30v"
1514     ;;
1515   :m32r-* | :d10v-* | :fr30-*)
1516     ospace_frag="config/mt-ospace"
1517     ;;
1518   no:* | :*)
1519     ;;
1520   *)
1521     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
1522     ;;
1523 esac
1524
1525 # Set with_gnu_as and with_gnu_ld as appropriate.
1526 #
1527 # This is done by determining whether or not the appropriate directory
1528 # is available, and by checking whether or not specific configurations
1529 # have requested that this magic not happen.
1530 #
1531 # The command line options always override the explicit settings in
1532 # configure.in, and the settings in configure.in override this magic.
1533 #
1534 # If the default for a toolchain is to use GNU as and ld, and you don't
1535 # want to do that, then you should use the --without-gnu-as and
1536 # --without-gnu-ld options for the configure script.
1537
1538 if test x${use_gnu_as} = x &&
1539    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
1540   with_gnu_as=yes
1541   extra_host_args="$extra_host_args --with-gnu-as"
1542 fi
1543
1544 if test x${use_gnu_ld} = x &&
1545    echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 ; then
1546   with_gnu_ld=yes
1547   extra_host_args="$extra_host_args --with-gnu-ld"
1548 fi
1549
1550 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
1551 # can detect this case.
1552
1553 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
1554   with_newlib=yes
1555   extra_host_args="$extra_host_args --with-newlib"
1556 fi
1557
1558 # Default to using --with-stabs for certain targets.
1559 if test x${with_stabs} = x ; then
1560   case "${target}" in
1561   mips*-*-irix[[56]]*)
1562     ;;
1563   mips*-*-* | alpha*-*-osf*)
1564     with_stabs=yes;
1565     extra_host_args="${extra_host_args} --with-stabs"
1566     ;;
1567   esac
1568 fi
1569
1570 # hpux11 in 64bit mode has libraries in a weird place.  Arrange to find
1571 # them automatically.
1572 case "${host}" in
1573   hppa*64*-*-hpux11*)
1574     extra_host_args="$extra_host_args -x-libraries=/usr/lib/pa20_64 -x-includes=/usr/X11R6/include"
1575     ;;
1576 esac
1577
1578 # Some systems (e.g., one of the i386-aix systems the gas testers are
1579 # using) don't handle "\$" correctly, so don't use it here.
1580 tooldir='${exec_prefix}'/${target_alias}
1581 build_tooldir=${tooldir}
1582
1583 # Generate default definitions for YACC, M4, LEX and other programs that run
1584 # on the build machine.  These are used if the Makefile can't locate these
1585 # programs in objdir.
1586 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
1587 AC_CHECK_PROGS([CONFIGURED_BISON], [bison], [$MISSING bison])
1588 AC_CHECK_PROGS([CONFIGURED_YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
1589 AC_CHECK_PROGS([CONFIGURED_M4], [gm4 gnum4 m4], [$MISSING m4])
1590 AC_CHECK_PROGS([CONFIGURED_FLEX], [flex], [$MISSING flex])
1591 AC_CHECK_PROGS([CONFIGURED_LEX], [flex lex], [$MISSING flex])
1592 AC_CHECK_PROGS([CONFIGURED_MAKEINFO], makeinfo, [$MISSING makeinfo])
1593
1594 # Create a .gdbinit file which runs the one in srcdir
1595 # and tells GDB to look there for source files.
1596
1597 if test -r ${srcdir}/.gdbinit ; then
1598   case ${srcdir} in
1599     .) ;;
1600     *) cat > ./.gdbinit <<EOF
1601 # ${NO_EDIT}
1602 dir ${srcdir}
1603 dir .
1604 source ${srcdir}/.gdbinit
1605 EOF
1606     ;;
1607   esac
1608 fi
1609
1610 # Make sure that the compiler is able to generate an executable.  If it
1611 # can't, we are probably in trouble.  We don't care whether we can run the
1612 # executable--we might be using a cross compiler--we only care whether it
1613 # can be created.  At this point the main configure script has set CC.
1614 we_are_ok=no
1615 echo "int main () { return 0; }" > conftest.c
1616 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
1617 if test $? = 0 ; then
1618   if test -s conftest || test -s conftest.exe ; then
1619     we_are_ok=yes
1620   fi
1621 fi
1622 case $we_are_ok in
1623   no)
1624     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
1625     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
1626     rm -f conftest*
1627     exit 1
1628     ;;
1629 esac
1630 rm -f conftest*
1631
1632 # The Solaris /usr/ucb/cc compiler does not appear to work.
1633 case "${host}" in
1634   sparc-sun-solaris2*)
1635       CCBASE="`echo ${CC-cc} | sed 's/ .*$//'`"
1636       if test "`type $CCBASE | sed 's/^[[^/]]*//'`" = "/usr/ucb/cc" ; then
1637           could_use=
1638           test -d /opt/SUNWspro/bin && could_use="/opt/SUNWspro/bin"
1639           if test -d /opt/cygnus/bin ; then
1640               if test "$could_use" = "" ; then
1641                   could_use="/opt/cygnus/bin"
1642               else
1643                   could_use="$could_use or /opt/cygnus/bin"
1644               fi
1645           fi
1646         if test "$could_use" = "" ; then
1647             echo "Warning: compilation may fail because you're using"
1648             echo "/usr/ucb/cc.  You should change your PATH or CC "
1649             echo "variable and rerun configure."
1650         else
1651             echo "Warning: compilation may fail because you're using"
1652             echo "/usr/ucb/cc, when you should use the C compiler from"
1653             echo "$could_use.  You should change your"
1654             echo "PATH or CC variable and rerun configure."
1655         fi
1656       fi
1657   ;;
1658 esac
1659
1660 case "${host}" in
1661   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
1662   *-*-darwin* | *-*-rhapsody* ) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
1663   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
1664 esac
1665
1666 # Record target_configdirs and the configure arguments for target and
1667 # build configuration in Makefile.
1668 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
1669 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
1670
1671 # Determine whether gdb needs tk/tcl or not.
1672 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
1673 # and in that case we want gdb to be built without tk.  Ugh!
1674 # In fact I believe gdb is the *only* package directly dependent on tk,
1675 # so we should be able to put the 'maybe's in unconditionally and
1676 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
1677 # 100% sure that that's safe though.
1678
1679 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
1680 case "$enable_gdbtk" in
1681   no)
1682     GDB_TK="" ;;
1683   yes)
1684     GDB_TK="${gdb_tk}" ;;
1685   *)
1686     # Only add the dependency on gdbtk when GDBtk is part of the gdb
1687     # distro.  Eventually someone will fix this and move Insight, nee
1688     # gdbtk to a separate directory.
1689     if test -d ${srcdir}/gdb/gdbtk ; then
1690       GDB_TK="${gdb_tk}"
1691     else
1692       GDB_TK=""
1693     fi
1694     ;;
1695 esac
1696
1697 # Strip out unwanted targets.
1698
1699 # While at that, we remove Makefiles if we were started for recursive
1700 # configuration, so that the top-level Makefile reconfigures them,
1701 # like we used to do when configure itself was recursive.
1702
1703 # Loop over modules.  $extrasub must be used with care, limiting as
1704 # much as possible the usage of range addresses.  That's because autoconf
1705 # splits the sed script to overcome limits in the number of commands,
1706 # and relying on carefully-timed sed passes may turn out to be very hard
1707 # to maintain later.  In this particular case, you just have to be careful
1708 # not to nest @if/@endif pairs, because configure will not warn you at all.
1709
1710 AC_ARG_ENABLE([bootstrap],
1711 [  --enable-bootstrap[=lean]     Enable bootstrapping [no]],,
1712 enable_bootstrap=default)
1713
1714 # Issue errors and warnings for invalid/strange bootstrap combinations.
1715 case "$configdirs" in
1716   *gcc*) have_compiler=yes ;;
1717   *) have_compiler=no ;;
1718 esac
1719
1720 case "$have_compiler:$host:$target:$enable_bootstrap" in
1721   *:*:*:no) ;;
1722
1723   # Default behavior.  (We'll) enable bootstrap if we have a compiler
1724   # and we are in a native configuration.
1725   yes:$build:$build:default)
1726     # This will become 'yes'
1727     enable_bootstrap=no ;;
1728
1729   *:*:*:default)
1730     enable_bootstrap=no ;;
1731
1732   # We have a compiler and we are in a native configuration, bootstrap is ok
1733   yes:$build:$build:yes | yes:$build:$build:lean)
1734     ;;
1735
1736   # Other configurations, but we have a compiler.  Assume the user knows
1737   # what he's doing.
1738   yes:*:*:yes | yes:*:*:lean)
1739     AC_MSG_WARN([trying to bootstrap a cross compiler])
1740     ;;
1741
1742   # No compiler: if they passed --enable-bootstrap explicitly, fail
1743   no:*:*:yes | no:*:*:lean)
1744     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1745
1746   # Fail if wrong command line
1747   *)
1748     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1749     ;;
1750 esac
1751
1752 # Adjust the toplevel makefile according to whether bootstrap was selected.
1753 case "$enable_bootstrap" in
1754   yes)
1755     bootstrap_lean='#'
1756     default_target=bootstrap
1757     bootstrap_suffix=bootstrap ;;
1758   lean)
1759     bootstrap_lean=''
1760     default_target=bootstrap
1761     bootstrap_suffix=bootstrap ;;
1762   no)
1763     default_target=all
1764     bootstrap_suffix=no-bootstrap ;;
1765 esac
1766 AC_SUBST(bootstrap_lean)
1767 AC_SUBST(default_target)
1768
1769 for module in ${build_configdirs} ; do
1770   if test -z "${no_recursion}" \
1771      && test -f ${build_subdir}/${module}/Makefile; then
1772     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
1773     rm -f ${build_subdir}/${module}/Makefile
1774   fi
1775   extrasub="$extrasub
1776 /^@if build-$module\$/d
1777 /^@endif build-$module\$/d
1778 /^@if build-$module-$bootstrap_suffix\$/d
1779 /^@endif build-$module-$bootstrap_suffix\$/d"
1780 done
1781 for module in ${configdirs} ; do
1782   if test -z "${no_recursion}" \
1783      && test -f ${module}/Makefile; then
1784     echo 1>&2 "*** removing ${module}/Makefile to force reconfigure"
1785     rm -f ${module}/Makefile
1786   fi
1787   extrasub="$extrasub
1788 /^@if $module\$/d
1789 /^@endif $module\$/d
1790 /^@if $module-$bootstrap_suffix\$/d
1791 /^@endif $module-$bootstrap_suffix\$/d"
1792 done
1793 for module in ${target_configdirs} ; do
1794   if test -z "${no_recursion}" \
1795      && test -f ${target_subdir}/${module}/Makefile; then
1796     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
1797     rm -f ${target_subdir}/${module}/Makefile
1798   fi
1799   extrasub="$extrasub
1800 /^@if target-$module\$/d
1801 /^@endif target-$module\$/d
1802 /^@if target-$module-$bootstrap_suffix\$/d
1803 /^@endif target-$module-$bootstrap_suffix\$/d"
1804 done
1805
1806 extrasub="$extrasub
1807 /^@if /,/^@endif /d"
1808
1809 # Create the serialization dependencies.  This uses a temporary file.
1810
1811 AC_ARG_ENABLE([serial-configure],
1812 [  --enable-serial-[{host,target,build}-]configure
1813                           Force sequential configuration of
1814                           sub-packages for the host, target or build
1815                           machine, or all sub-packages])
1816
1817 case ${enable_serial_configure} in
1818   yes)
1819     enable_serial_build_configure=yes
1820     enable_serial_host_configure=yes
1821     enable_serial_target_configure=yes
1822     ;;
1823 esac
1824
1825 # These force 'configure's to be done one at a time, to avoid problems
1826 # with contention over a shared config.cache.
1827 rm -f serdep.tmp
1828 echo '# serdep.tmp' > serdep.tmp
1829 olditem=
1830 test "x${enable_serial_build_configure}" = xyes &&
1831 for item in ${build_configdirs} ; do
1832   case ${olditem} in
1833     "") ;;
1834     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
1835   esac
1836   olditem=${item}
1837 done
1838 olditem=
1839 test "x${enable_serial_host_configure}" = xyes &&
1840 for item in ${configdirs} ; do
1841   case ${olditem} in
1842     "") ;;
1843     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
1844   esac
1845   olditem=${item}
1846 done
1847 olditem=
1848 test "x${enable_serial_target_configure}" = xyes &&
1849 for item in ${target_configdirs} ; do
1850   case ${olditem} in
1851     "") ;;
1852     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
1853   esac
1854   olditem=${item}
1855 done
1856 serialization_dependencies=serdep.tmp
1857 AC_SUBST_FILE(serialization_dependencies)
1858
1859 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
1860 # target and nonopt.  These are the ones we might not want to pass
1861 # down to subconfigures.  Also strip program-prefix, program-suffix,
1862 # and program-transform-name, so that we can pass down a consistent
1863 # program-transform-name.  If autoconf has put single quotes around
1864 # any of these arguments (because they contain shell metacharacters)
1865 # then this will fail; in practice this only happens for
1866 # --program-transform-name, so be sure to override --program-transform-name
1867 # at the end of the argument list.
1868 # These will be expanded by make, so quote '$'.
1869 cat <<\EOF_SED > conftestsed
1870 s/ --no[[^ ]]*/ /g
1871 s/ --c[[a-z-]]*[[= ]][[^ ]]*//g
1872 s/ --sr[[a-z-]]*[[= ]][[^ ]]*//g
1873 s/ --ho[[a-z-]]*[[= ]][[^ ]]*//g
1874 s/ --bu[[a-z-]]*[[= ]][[^ ]]*//g
1875 s/ --t[[a-z-]]*[[= ]][[^ ]]*//g
1876 s/ --program-[[pst]][[a-z-]]*[[= ]][[^ ]]*//g
1877 s/ -cache-file[[= ]][[^ ]]*//g
1878 s/ -srcdir[[= ]][[^ ]]*//g
1879 s/ -host[[= ]][[^ ]]*//g
1880 s/ -build[[= ]][[^ ]]*//g
1881 s/ -target[[= ]][[^ ]]*//g
1882 s/ -program-prefix[[= ]][[^ ]]*//g
1883 s/ -program-suffix[[= ]][[^ ]]*//g
1884 s/ -program-transform-name[[= ]][[^ ]]*//g
1885 s/ [[^' -][^ ]*] / /
1886 s/^ *//;s/ *$//
1887 s,\$,$$,g
1888 EOF_SED
1889 sed -f conftestsed <<EOF_SED > conftestsed.out
1890  ${ac_configure_args}
1891 EOF_SED
1892 baseargs=`cat conftestsed.out`
1893 rm -f conftestsed conftestsed.out
1894
1895 # Add in --program-transform-name, after --program-prefix and
1896 # --program-suffix have been applied to it.  Autoconf has already
1897 # doubled dollar signs and backslashes in program_transform_name; we want
1898 # the backslashes un-doubled, and then the entire thing wrapped in single
1899 # quotes, because this will be expanded first by make and then by the shell.
1900 # Also, because we want to override the logic in subdir configure scripts to
1901 # choose program_transform_name, replace any s,x,x, with s,y,y,.
1902 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
1903 ${program_transform_name}
1904 EOF_SED
1905 gcc_transform_name=`cat conftestsed.out`
1906 rm -f conftestsed.out
1907 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
1908
1909 # For the build-side libraries, we just need to pretend we're native,
1910 # and not use the same cache file.  Multilibs are neither needed nor
1911 # desired.
1912 build_configargs="--cache-file=../config.cache --build=${build_alias} --host=${build_alias} --target=${target_alias} ${baseargs}"
1913
1914 # For host modules, accept cache file option, or specification as blank.
1915 case "${cache_file}" in
1916 "") # empty
1917   cache_file_option="" ;;
1918 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
1919   cache_file_option="--cache-file=${cache_file}" ;;
1920 *) # relative path
1921   cache_file_option="--cache-file=../${cache_file}" ;;
1922 esac
1923
1924 # Host dirs don't like to share a cache file either, horribly enough.
1925 # This seems to be due to autoconf 2.5x stupidity.
1926 host_configargs="--cache-file=./config.cache --build=${build_alias} --host=${host_alias} --target=${target_alias} ${extra_host_args} ${baseargs}"
1927
1928 target_configargs=${baseargs}
1929
1930 # Passing a --with-cross-host argument lets the target libraries know
1931 # whether they are being built with a cross-compiler or being built
1932 # native.  However, it would be better to use other mechanisms to make the
1933 # sorts of decisions they want to make on this basis.  Please consider
1934 # this option to be deprecated.  FIXME.
1935 if test x${is_cross_compiler} = xyes ; then
1936   target_configargs="--with-cross-host=${host_alias} ${target_configargs}"
1937 fi
1938
1939 # Default to --enable-multilib.
1940 if test x${enable_multilib} = x ; then
1941   target_configargs="--enable-multilib ${target_configargs}"
1942 fi
1943
1944 # Pass --with-newlib if appropriate.  Note that target_configdirs has
1945 # changed from the earlier setting of with_newlib.
1946 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
1947   target_configargs="--with-newlib ${target_configargs}"
1948 fi
1949
1950 # Different target subdirs use different values of certain variables
1951 # (notably CXX).  Worse, multilibs use *lots* of different values.
1952 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
1953 # it doesn't automatically accept command-line overrides of them.
1954 # This means it's not safe for target subdirs to share a cache file,
1955 # which is disgusting, but there you have it.  Hopefully this can be
1956 # fixed in future.  It's still worthwhile to use a cache file for each
1957 # directory.  I think.
1958
1959 # Pass the appropriate --build, --host, --target and --cache-file arguments.
1960 # We need to pass --target, as newer autoconf's requires consistency
1961 # for target_alias and gcc doesn't manage it consistently.
1962 target_configargs="--cache-file=./config.cache --build=${build_alias} --host=${target_alias} --target=${target_alias} ${target_configargs}"
1963
1964 FLAGS_FOR_TARGET=
1965 case " $target_configdirs " in
1966  *" newlib "*)
1967   case " $target_configargs " in
1968   *" --with-newlib "*)
1969    case "$target" in
1970    *-cygwin*)
1971      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' ;;
1972    esac
1973
1974    # If we're not building GCC, don't discard standard headers.
1975    if test -d ${srcdir}/gcc; then
1976      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
1977
1978      if test "${build}" != "${host}"; then
1979        # On Canadian crosses, CC_FOR_TARGET will have already been set
1980        # by `configure', so we won't have an opportunity to add -Bgcc/
1981        # to it.  This is right: we don't want to search that directory
1982        # for binaries, but we want the header files in there, so add
1983        # them explicitly.
1984        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include'
1985
1986        # Someone might think of using the pre-installed headers on
1987        # Canadian crosses, in case the installed compiler is not fully
1988        # compatible with the compiler being built.  In this case, it
1989        # would be better to flag an error than risking having
1990        # incompatible object files being constructed.  We can't
1991        # guarantee that an error will be flagged, but let's hope the
1992        # compiler will do it, when presented with incompatible header
1993        # files.
1994      fi
1995    fi
1996
1997    case "${target}-${is_cross_compiler}" in
1998    i[[3456789]]86-*-linux*-no)
1999       # Here host == target, so we don't need to build gcc,
2000       # so we don't want to discard standard headers.
2001       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
2002       ;;
2003    *)
2004       # If we're building newlib, use its generic headers last, but search
2005       # for any libc-related directories first (so make it the last -B
2006       # switch).
2007       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
2008       ;;
2009    esac
2010    ;;
2011   esac
2012   ;;
2013 esac
2014
2015 # Allow the user to override the flags for
2016 # our build compiler if desired.
2017 CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
2018
2019 # On Canadian crosses, we'll be searching the right directories for
2020 # the previously-installed cross compiler, so don't bother to add
2021 # flags for directories within the install tree of the compiler
2022 # being built; programs in there won't even run.
2023 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
2024   # Search for pre-installed headers if nothing else fits.
2025   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
2026 fi
2027
2028 if test "x${use_gnu_ld}" = x &&
2029    echo " ${configdirs} " | grep " ld " > /dev/null ; then
2030   # Arrange for us to find uninstalled linker scripts.
2031   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
2032 fi
2033
2034 if test "x${CC_FOR_TARGET+set}" = xset; then
2035   :
2036 elif test -d ${srcdir}/gcc; then
2037   CC_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/'
2038 elif test "$host" = "$target"; then
2039   CC_FOR_TARGET='$(CC)'
2040 else
2041   CC_FOR_TARGET=`echo gcc | sed "${program_transform_name}"`
2042 fi
2043 CC_FOR_TARGET=$CC_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2044
2045 if test "x${GCJ_FOR_TARGET+set}" = xset; then
2046   :
2047 elif test -d ${srcdir}/gcc; then
2048   GCJ_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/'
2049 elif test "$host" = "$target"; then
2050   GCJ_FOR_TARGET='gcj'
2051 else
2052   GCJ_FOR_TARGET=`echo gcj | sed "${program_transform_name}"`
2053 fi
2054 GCJ_FOR_TARGET=$GCJ_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2055
2056 if test "x${GFORTRAN_FOR_TARGET+set}" = xset; then
2057   :
2058 elif test -d ${srcdir}/gcc; then
2059   GFORTRAN_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/'
2060 elif test "$host" = "$target"; then
2061   GFORTRAN_FOR_TARGET='gfortran'
2062 else
2063   GFORTRAN_FOR_TARGET=`echo gfortran | sed "${program_transform_name}"`
2064 fi
2065 case $GFORTRAN_FOR_TARGET in
2066 *' $(FLAGS_FOR_TARGET)') ;;
2067 *) GFORTRAN_FOR_TARGET=$GFORTRAN_FOR_TARGET' $(FLAGS_FOR_TARGET)' ;;
2068 esac
2069
2070 # Don't use libstdc++-v3's flags to configure/build itself.
2071 libstdcxx_flags='`test ! -f $$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs'
2072 raw_libstdcxx_flags='-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs'
2073
2074 if test "x${CXX_FOR_TARGET+set}" = xset; then
2075   if test "x${RAW_CXX_FOR_TARGET+set}" != xset; then
2076     RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2077   fi
2078 elif test -d ${srcdir}/gcc; then
2079   # We add -shared-libgcc to CXX_FOR_TARGET whenever we use xgcc instead
2080   # of g++ for linking C++ or Java, because g++ has -shared-libgcc by
2081   # default whereas gcc does not.
2082   # RAW_CXX_FOR_TARGET is for linking C++ or java; CXX_FOR_TARGET is for
2083   # all other cases.
2084   CXX_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/g++ -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ '$libstdcxx_flags
2085   RAW_CXX_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ '$raw_libstdcxx_flags
2086 elif test "$host" = "$target"; then
2087   CXX_FOR_TARGET='$(CXX)'
2088   RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2089 else
2090   CXX_FOR_TARGET=`echo c++ | sed "${program_transform_name}"`
2091   RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2092 fi
2093 CXX_FOR_TARGET=$CXX_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2094 RAW_CXX_FOR_TARGET=$RAW_CXX_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2095
2096 qCXX_FOR_TARGET=`echo "$CXX_FOR_TARGET" | sed 's,[[&%]],\\\&,g'`
2097 qRAW_CXX_FOR_TARGET=`echo "$RAW_CXX_FOR_TARGET" | sed 's,[[&%]],\\\&,g'`
2098
2099 # We want to defer the evaluation of `cmd`s and shell variables in
2100 # CXX_FOR_TARGET when recursing in the top-level Makefile, such as for
2101 # bootstrap.  We'll enclose CXX_FOR_TARGET_FOR_RECURSIVE_MAKE in single
2102 # quotes, but we still have to duplicate `$'s so that shell variables
2103 # can be expanded by the nested make as shell variables, not as make
2104 # macros.
2105 qqCXX_FOR_TARGET=`echo "$qCXX_FOR_TARGET" | sed -e 's,[[$]][[$]],$$$$,g'`
2106 qqRAW_CXX_FOR_TARGET=`echo "$qRAW_CXX_FOR_TARGET" | sed -e 's,[[$]][[$]],$$$$,g'`
2107
2108 # Wrap CC_FOR_TARGET and friends, for certain types of builds.
2109 CC_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${CC_FOR_TARGET}"
2110 GCJ_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${GCJ_FOR_TARGET}"
2111 GFORTRAN_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${GFORTRAN_FOR_TARGET}"
2112 CXX_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${qCXX_FOR_TARGET}"
2113 RAW_CXX_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${qRAW_CXX_FOR_TARGET}"
2114 CXX_FOR_TARGET_FOR_RECURSIVE_MAKE="\$(STAGE_CC_WRAPPER) ${qqCXX_FOR_TARGET}"
2115 RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE="\$(STAGE_CC_WRAPPER) ${qqRAW_CXX_FOR_TARGET}"
2116
2117 # Makefile fragments.
2118 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
2119 do
2120   eval fragval=\$$frag
2121   if test $fragval != /dev/null; then
2122     eval $frag=${srcdir}/$fragval
2123   fi
2124 done
2125 AC_SUBST_FILE(host_makefile_frag)
2126 AC_SUBST_FILE(target_makefile_frag)
2127 AC_SUBST_FILE(alphaieee_frag)
2128 AC_SUBST_FILE(ospace_frag)
2129
2130 # Miscellanea: directories, flags, etc.
2131 AC_SUBST(RPATH_ENVVAR)
2132 AC_SUBST(BUILD_PREFIX)
2133 AC_SUBST(BUILD_PREFIX_1)
2134 AC_SUBST(tooldir)
2135 AC_SUBST(build_tooldir)
2136 AC_SUBST(GDB_TK)
2137
2138 # Build module lists & subconfigure args.
2139 AC_SUBST(build_configargs)
2140 AC_SUBST(build_configdirs)
2141
2142 # Host module lists & subconfigure args.
2143 AC_SUBST(host_configargs)
2144 AC_SUBST(configdirs)
2145
2146 # Target module lists & subconfigure args.
2147 AC_SUBST(target_configargs)
2148 AC_SUBST(target_configdirs)
2149
2150 # Build tools.
2151 AC_SUBST(CC_FOR_BUILD)
2152 AC_SUBST(config_shell)
2153
2154 # Host tools.
2155 NCN_STRICT_CHECK_TOOL(AR, ar)
2156 NCN_STRICT_CHECK_TOOL(AS, as)
2157 NCN_STRICT_CHECK_TOOL(DLLTOOL, dlltool)
2158 NCN_STRICT_CHECK_TOOL(LD, ld)
2159 NCN_STRICT_CHECK_TOOL(NM, nm)
2160 NCN_STRICT_CHECK_TOOL(RANLIB, ranlib, :)
2161 NCN_STRICT_CHECK_TOOL(WINDRES, windres)
2162 NCN_STRICT_CHECK_TOOL(OBJCOPY, objcopy)
2163 NCN_STRICT_CHECK_TOOL(OBJDUMP, objdump)
2164 AC_SUBST(CC)
2165 AC_SUBST(CXX)
2166 AC_SUBST(CFLAGS)
2167 AC_SUBST(CFLAGS_FOR_BUILD)
2168 AC_SUBST(CXXFLAGS)
2169
2170 # Target tools.
2171 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_AR_FOR_TARGET, ar)
2172 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_AS_FOR_TARGET, as)
2173 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_DLLTOOL_FOR_TARGET, dlltool)
2174 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_LD_FOR_TARGET, ld)
2175 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_NM_FOR_TARGET, nm)
2176 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_RANLIB_FOR_TARGET, ranlib, :)
2177 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_WINDRES_FOR_TARGET, windres)
2178
2179 AC_SUBST(GCC_FOR_TARGET)
2180 AC_SUBST(FLAGS_FOR_TARGET)
2181 AC_SUBST(CC_FOR_TARGET)
2182 AC_SUBST(GCJ_FOR_TARGET)
2183 AC_SUBST(GFORTRAN_FOR_TARGET)
2184 AC_SUBST(CXX_FOR_TARGET)
2185 AC_SUBST(RAW_CXX_FOR_TARGET)
2186 AC_SUBST(CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)
2187 AC_SUBST(RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)
2188
2189 # Fix up target tools.
2190 if test "x${build}" = "x${host}" ; then
2191   # In this case, the newly built tools can and should be used,
2192   # so we override the results of the autoconf tests.
2193   # This should really only happen when the tools are actually being built,
2194   # but that's a further refinement.  The new build scheme, where
2195   # tools are built into a structure paralleling where they're installed,
2196   # should also eliminate all of this cleanly.
2197   AR_FOR_TARGET="\$(USUAL_AR_FOR_TARGET)"
2198   AS_FOR_TARGET="\$(USUAL_AS_FOR_TARGET)"
2199   DLLTOOL_FOR_TARGET="\$(USUAL_DLLTOOL_FOR_TARGET)"
2200   LD_FOR_TARGET="\$(USUAL_LD_FOR_TARGET)"
2201   NM_FOR_TARGET="\$(USUAL_NM_FOR_TARGET)"
2202   RANLIB_FOR_TARGET="\$(USUAL_RANLIB_FOR_TARGET)"
2203   WINDRES_FOR_TARGET="\$(USUAL_WINDRES_FOR_TARGET)"
2204 else
2205   # Just use the ones we found.
2206   AR_FOR_TARGET="\$(CONFIGURED_AR_FOR_TARGET)"
2207   AS_FOR_TARGET="\$(CONFIGURED_AS_FOR_TARGET)"
2208   DLLTOOL_FOR_TARGET="\$(CONFIGURED_DLLTOOL_FOR_TARGET)"
2209   LD_FOR_TARGET="\$(CONFIGURED_LD_FOR_TARGET)"
2210   NM_FOR_TARGET="\$(CONFIGURED_NM_FOR_TARGET)"
2211   RANLIB_FOR_TARGET="\$(CONFIGURED_RANLIB_FOR_TARGET)"
2212   WINDRES_FOR_TARGET="\$(CONFIGURED_WINDRES_FOR_TARGET)"
2213 fi
2214 AC_SUBST(AR_FOR_TARGET)
2215 AC_SUBST(AS_FOR_TARGET)
2216 AC_SUBST(DLLTOOL_FOR_TARGET)
2217 AC_SUBST(LD_FOR_TARGET)
2218 AC_SUBST(NM_FOR_TARGET)
2219 AC_SUBST(RANLIB_FOR_TARGET)
2220 AC_SUBST(WINDRES_FOR_TARGET)
2221
2222 # Certain tools may need extra flags.
2223 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
2224 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
2225 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
2226
2227 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2228 AC_ARG_ENABLE(maintainer-mode,
2229 [  --enable-maintainer-mode enable make rules and dependencies not useful
2230                           (and sometimes confusing) to the casual installer],
2231       USE_MAINTAINER_MODE=$enableval,
2232       USE_MAINTAINER_MODE=no)
2233 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2234 AC_SUBST(MAINTAINER_MODE_TRUE)
2235 AC_SUBST(MAINTAINER_MODE_FALSE)
2236 if test "$USE_MAINTAINER_MODE" = yes; then
2237   MAINTAINER_MODE_TRUE=
2238   MAINTAINER_MODE_FALSE='#'
2239 else
2240   MAINTAINER_MODE_TRUE='#'
2241   MAINTAINER_MODE_FALSE=
2242 fi
2243 MAINT=$MAINTAINER_MODE_TRUE
2244 AC_SUBST(MAINT)dnl
2245
2246 # ---------------------
2247 # GCC bootstrap support
2248 # ---------------------
2249
2250 # Stage specific cflags for build.
2251 stage1_cflags="-g"
2252 case $build in
2253   vax-*-*)
2254     case ${GCC} in
2255       yes) stage1_cflags="-g -Wa,-J" ;;
2256       *) stage1_cflags="-g -J" ;;
2257     esac ;;
2258   powerpc-*-darwin*)
2259     # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
2260     # sources; use -no-cpp-precomp to get to GNU cpp.
2261     # Apple's GCC has bugs in designated initializer handling, so disable
2262     # that too.
2263     stage1_cflags="-g -no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
2264     ;;
2265 esac
2266 AC_SUBST(stage1_cflags)
2267
2268 # It makes debugging easier if we create as symlinks the stage directories
2269 # gcc for stageN-gcc and stagePREV-gcc for stage(N-1).  In case this is not
2270 # possible, however, we can resort to mv.
2271 AC_CACHE_CHECK([if symbolic links between directories work],
2272 [gcc_cv_prog_ln_s_dir],
2273 [if test "${LN_S}" = "ln -s" \
2274    && mkdir confdir.s1 \
2275    && ln -s confdir.s1 confdir.s2 \
2276    && echo timestamp1 > confdir.s1/conftest.1 \
2277    && cmp confdir.s1/conftest.1 confdir.s2/conftest.1 \
2278    && echo timestamp2 > confdir.s2/conftest.2 \
2279    && cmp confdir.s1/conftest.2 confdir.s1/conftest.2 \
2280    && rm -f confdir.s2; then
2281   gcc_cv_prog_ln_s_dir=yes
2282 else
2283   gcc_cv_prog_ln_s_dir=no
2284 fi
2285 rm -rf confdir.s1 confdir.s2])
2286
2287 case ${gcc_cv_prog_ln_s_dir} in
2288   yes)
2289     CREATE_LINK_TO_DIR='ln -s $$1 $$2'
2290     UNDO_LINK_TO_DIR='rm -f $$1' ;;
2291   *)
2292     CREATE_LINK_TO_DIR='mv $$1 $$2'
2293     UNDO_LINK_TO_DIR='mv $$1 $$2' ;;
2294 esac
2295 AC_SUBST(CREATE_LINK_TO_DIR)
2296 AC_SUBST(UNDO_LINK_TO_DIR)
2297
2298 # Enable -Werror in bootstrap stage2 and later.
2299 # Change the default to "no" on release branches.
2300 AC_ARG_ENABLE(werror,
2301 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
2302 [enable_werror=yes])
2303 case ${enable_werror} in
2304   yes) stage2_werror_flag="--enable-werror-always" ;;
2305   *) stage2_werror_flag="" ;;
2306 esac
2307 AC_SUBST(stage2_werror_flag)
2308
2309 AC_OUTPUT(Makefile)