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 # Remove more programs from consideration, based on the host or
 261 # target this usually means that a port of the program doesn't
 262 # exist yet.
 263
 264 case "${host}" in
 265   hppa*64*-*-*)
 266     noconfigdirs="$noconfigdirs byacc"
 267     ;;
 268   i[[3456789]]86-*-vsta)
 269     noconfigdirs="$noconfigdirs tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl itcl gnuserv gettext"
 270     ;;
 271   i[[3456789]]86-*-go32* | i[[3456789]]86-*-msdosdjgpp*)
 272     noconfigdirs="$noconfigdirs tcl tk expect dejagnu send-pr uudecode guile itcl gnuserv libffi"
 273     ;;
 274   i[[3456789]]86-*-mingw32*)
 275     # noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl itcl gnuserv"
 276     noconfigdirs="$noconfigdirs expect dejagnu autoconf automake send-pr rcs guile perl texinfo libtool"
 277     ;;
 278   i[[3456789]]86-*-beos*)
 279     noconfigdirs="$noconfigdirs tk itcl libgui gdb"
 280     ;;
 281   *-*-cygwin*)
 282     noconfigdirs="$noconfigdirs autoconf automake send-pr rcs guile perl"
 283     ;;
 284   *-*-netbsd*)
 285     noconfigdirs="$noconfigdirs rcs"
 286     ;;
 287   ppc*-*-pe)
 288     noconfigdirs="$noconfigdirs patch diff make tk tcl expect dejagnu autoconf automake texinfo bison send-pr gprof rcs guile perl itcl gnuserv"
 289     ;;
 290   powerpc-*-beos*)
 291     noconfigdirs="$noconfigdirs tk itcl libgui gdb dejagnu readline"
 292     ;;
 293 esac
 294
 295
 296 AC_ARG_ENABLE(libada,
 297 [  --enable-libada        Builds libada directory],
 298 ENABLE_LIBADA=$enableval,
 299 ENABLE_LIBADA=yes)
 300 if test "${ENABLE_LIBADA}" != "yes" ; then
 301   noconfigdirs="$noconfigdirs target-libada"
 302   noconfigdirs="$noconfigdirs gnattools"
 303 fi
 304
 305 # Save it here so that, even in case of --enable-libgcj, if the Java
 306 # front-end isn't enabled, we still get libgcj disabled.
 307 libgcj_saved=$libgcj
 308 case $enable_libgcj in
 309 yes)
 310   # If we reset it here, it won't get added to noconfigdirs in the
 311   # target-specific build rules, so it will be forcibly enabled
 312   # (unless the Java language itself isn't enabled).
 313   libgcj=
 314   ;;
 315 no)
 316   # Make sure we get it printed in the list of not supported target libs.
 317   noconfigdirs="$noconfigdirs ${libgcj}"
 318   ;;
 319 esac
 320
 321
 322 # Allow --disable-libmudflap to exclude target-libmudflap
 323 case $enable_libmudflap in
 324 yes)
 325     ;;
 326 no)
 327     noconfigdirs="$noconfigdirs target-libmudflap"
 328     ;;
 329 "")
 330     case "${target}" in
 331     *-*-linux*-gnu | *-*-gnu* | *-*-k*bsd*-gnu)
 332         # Enable libmudflap by default in GNU and friends.
 333         ;;
 334     *-*-freebsd*)
 335         # Enable libmudflap by default in FreeBSD.
 336         ;;
 337     *)
 338         # Disable it by default everywhere else.
 339         noconfigdirs="$noconfigdirs target-libmudflap"
 340         ;;
 341     esac
 342 esac
 343
 344
 345 case "${target}" in
 346   *-*-chorusos)
 347     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 348     ;;
 349   powerpc-*-darwin*)
 350     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes gdb gprof"
 351     ;;
 352   *-*-darwin*)
 353     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes gdb gprof"
 354     noconfigdirs="$noconfigdirs ${libgcj}"
 355     ;;
 356   *-*-freebsd[[12]] | *-*-freebsd[[12]].* | *-*-freebsd*aout*)
 357     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 358     ;;
 359   *-*-freebsd*)
 360     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 361     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 362         && test -f /usr/local/include/gmp.h; then
 363       with_gmp=/usr/local
 364     fi
 365
 366     # Skip some stuff that's unsupported on some FreeBSD configurations.
 367     case "${target}" in
 368       i*86-*-*) ;;
 369       alpha*-*-*) ;;
 370       *)
 371         noconfigdirs="$noconfigdirs ${libgcj}"
 372         ;;
 373     esac
 374     ;;
 375   *-*-kaos*)
 376     # Remove unsupported stuff on all kaOS configurations.
 377     skipdirs="target-libiberty ${libgcj} target-libstdc++-v3 target-librx"
 378     skipdirs="$skipdirs target-libobjc target-examples target-groff target-gperf"
 379     skipdirs="$skipdirs zlib fastjar target-libjava target-boehm-gc target-zlib"
 380     noconfigdirs="$noconfigdirs target-libgloss"
 381     ;;
 382   *-*-netbsd*)
 383     # Skip some stuff on all NetBSD configurations.
 384     noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss"
 385
 386     # Skip some stuff that's unsupported on some NetBSD configurations.
 387     case "${target}" in
 388       i*86-*-netbsdelf*) ;;
 389       arm*-*-netbsdelf*) ;;
 390       *)
 391         noconfigdirs="$noconfigdirs ${libgcj}"
 392         ;;
 393     esac
 394     ;;
 395   *-*-netware*)
 396     noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss ${libgcj} target-libmudflap"
 397     ;;
 398   *-*-rtems*)
 399     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 400     ;;
 401   *-*-uclinux*)
 402     noconfigdirs="$noconfigdirs target-newlib target-libgloss target-rda ${libgcj}"
 403     ;;
 404   *-*-vxworks*)
 405     noconfigdirs="$noconfigdirs target-newlib target-libgloss target-libiberty ${libgcj}"
 406     ;;
 407   alpha*-dec-osf*)
 408     # ld works, but does not support shared libraries.
 409     # newlib is not 64 bit ready.  I'm not sure about fileutils.
 410     # gas doesn't generate exception information.
 411     noconfigdirs="$noconfigdirs gas ld fileutils target-newlib target-libgloss"
 412     ;;
 413   alpha*-*-*vms*)
 414     noconfigdirs="$noconfigdirs gdb ld target-newlib target-libgloss ${libgcj}"
 415     ;;
 416   alpha*-*-linux*)
 417     # newlib is not 64 bit ready
 418     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 419     ;;
 420   alpha*-*-*)
 421     # newlib is not 64 bit ready
 422     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 423     ;;
 424   am33_2.0-*-linux*)
 425     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
 426     ;;
 427   sh-*-linux*)
 428     noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
 429     ;;
 430   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 431     noconfigdirs="$noconfigdirs ${libgcj}"
 432     noconfigdirs="$noconfigdirs target-examples"
 433     noconfigdirs="$noconfigdirs target-libiberty texinfo send-pr"
 434     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 435     noconfigdirs="$noconfigdirs expect dejagnu"
 436     # the C++ libraries don't build on top of CE's C libraries
 437     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 438     noconfigdirs="$noconfigdirs target-newlib"
 439     case "${host}" in
 440       *-*-cygwin*) ;; # keep gdb and readline
 441       *) noconfigdirs="$noconfigdirs gdb readline"
 442          ;;
 443     esac
 444     ;;
 445   arc-*-*)
 446     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 447     ;;
 448   arm-semi-aof )
 449     ;;
 450   arm-*-coff | strongarm-*-coff | xscale-*-coff)
 451     noconfigdirs="$noconfigdirs ${libgcj}"
 452     ;;
 453   arm-*-elf* | strongarm-*-elf* | xscale-*-elf* | arm*-*-eabi* )
 454     noconfigdirs="$noconfigdirs target-libffi target-qthreads"
 455     ;;
 456   arm*-*-symbianelf*)
 457     noconfigdirs="$noconfigdirs ${libgcj} target-libiberty"
 458     ;;
 459   arm-*-pe*)
 460     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 461     ;;
 462   thumb-*-coff)
 463     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 464     ;;
 465   thumb-*-elf)
 466     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 467     ;;
 468   thumb-*-pe)
 469     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 470     ;;
 471   arm-*-riscix*)
 472     noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
 473     ;;
 474   avr-*-*)
 475     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 476     ;;
 477   c4x-*-* | tic4x-*-*)
 478     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 479     ;;
 480   c54x*-*-* | tic54x-*-*)
 481     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj} gcc gdb newlib"
 482     ;;
 483   cris-*-* | crisv32-*-*)
 484     libgcj_ex_libffi=`echo ${libgcj} | sed -e 's/target-libffi//'`
 485     case "${target}" in
 486       *-*-aout)
 487         noconfigdirs="$noconfigdirs ${libgcj}";;
 488       *-*-elf)
 489         noconfigdirs="$noconfigdirs ${libgcj_ex_libffi}";;
 490       *-*-linux*)
 491         noconfigdirs="$noconfigdirs ${libgcj_ex_libffi} target-newlib target-libgloss";;
 492       *)
 493         noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss";;
 494     esac
 495     ;;
 496   crx-*-*)
 497     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-mudflap ${libgcj}"
 498     ;;
 499   d10v-*-*)
 500     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 501     ;;
 502   d30v-*-*)
 503     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 504     ;;
 505   fr30-*-elf*)
 506     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 507     ;;
 508   frv-*-*)
 509     noconfigdirs="$noconfigdirs ${libgcj}"
 510     ;;
 511   h8300*-*-*)
 512     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 513     ;;
 514   h8500-*-*)
 515     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 516     ;;
 517   hppa1.1-*-osf* | hppa1.1-*-bsd* )
 518     ;;
 519   hppa*64*-*-linux* | parisc*64*-*-linux*)
 520     # In this case, it's because the hppa64-linux target is for
 521     # the kernel only at this point and has no libc, and thus no
 522     # headers, crt*.o, etc., all of which are needed by these.
 523     noconfigdirs="$noconfigdirs target-zlib"
 524     ;;
 525   parisc*-*-linux* | hppa*-*-linux*)
 526     ;;
 527   hppa*-*-*elf* | \
 528   hppa*-*-lites* | \
 529   hppa*-*-openbsd* | \
 530   hppa*64*-*-*)
 531     noconfigdirs="$noconfigdirs ${libgcj}"
 532     ;;
 533   hppa*-*-*)
 534     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 535     # build on HP-UX 10.20.
 536     noconfigdirs="$noconfigdirs ld shellutils ${libgcj}"
 537     ;;
 538   i960-*-*)
 539     noconfigdirs="$noconfigdirs ${libgcj} gdb"
 540     ;;
 541   ia64*-*-elf*)
 542     # No gdb support yet.
 543     noconfigdirs="$noconfigdirs readline mmalloc libgui itcl gdb"
 544     ;;
 545   ia64*-**-hpux*)
 546     # No gdb or ld support yet.
 547     noconfigdirs="$noconfigdirs ${libgcj} readline mmalloc libgui itcl gdb ld"
 548     ;;
 549   i370-*-opened*)
 550     ;;
 551   i[[3456789]]86-*-coff | i[[3456789]]86-*-elf)
 552     noconfigdirs="$noconfigdirs ${libgcj}"
 553     ;;
 554   i[[3456789]]86-*-linux*)
 555     # The GCC port for glibc1 has no MD_FALLBACK_FRAME_STATE_FOR, so let's
 556     # not build java stuff by default.
 557     case "${target}" in
 558       *-*-*libc1*)
 559         noconfigdirs="$noconfigdirs ${libgcj}";;
 560     esac
 561
 562     # This section makes it possible to build newlib natively on linux.
 563     # If we are using a cross compiler then don't configure newlib.
 564     if test x${is_cross_compiler} != xno ; then
 565       noconfigdirs="$noconfigdirs target-newlib"
 566     fi
 567     noconfigdirs="$noconfigdirs target-libgloss"
 568     # If we are not using a cross compiler, do configure newlib.
 569     # Note however, that newlib will only be configured in this situation
 570     # if the --with-newlib option has been given, because otherwise
 571     # 'target-newlib' will appear in skipdirs.
 572     ;;
 573   i[[3456789]]86-*-mingw32*)
 574     target_configdirs="$target_configdirs target-mingw"
 575     noconfigdirs="$noconfigdirs expect target-libgloss ${libgcj}"
 576
 577     # Can't build gdb for mingw32 if not native.
 578     case "${host}" in
 579       i[[3456789]]86-*-mingw32) ;; # keep gdb tcl tk expect etc.
 580       *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl gnuserv"
 581          ;;
 582     esac
 583     ;;
 584   *-*-cygwin*)
 585     target_configdirs="$target_configdirs target-libtermcap target-winsup"
 586     noconfigdirs="$noconfigdirs target-gperf target-libgloss ${libgcj}"
 587     # always build newlib if winsup directory is present.
 588     if test -d "$srcdir/winsup"; then
 589       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 590     elif test -d "$srcdir/newlib"; then
 591       echo "Warning: winsup is missing so newlib can't be built."
 592     fi
 593
 594     # Can't build gdb for Cygwin if not native.
 595     case "${host}" in
 596       *-*-cygwin*) ;; # keep gdb tcl tk expect etc.
 597       *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl libgui gnuserv"
 598          ;;
 599     esac
 600     ;;
 601   i[[3456789]]86-moss-msdos | i[[3456789]]86-*-moss* | \
 602   i[[3456789]]86-*-uwin* | i[[3456789]]86-*-interix* )
 603     ;;
 604   i[[3456789]]86-*-pe)
 605     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
 606     ;;
 607   i[[3456789]]86-*-sco3.2v5*)
 608     # The linker does not yet know about weak symbols in COFF,
 609     # and is not configured to handle mixed ELF and COFF.
 610     noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
 611     ;;
 612   i[[3456789]]86-*-sco*)
 613     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 614     ;;
 615   i[[3456789]]86-*-solaris2*)
 616     noconfigdirs="$noconfigdirs target-libgloss"
 617     ;;
 618   i[[3456789]]86-*-sysv4*)
 619     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 620     ;;
 621   i[[3456789]]86-*-beos*)
 622     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
 623     ;;
 624   m32r-*-*)
 625     noconfigdirs="$noconfigdirs ${libgcj}"
 626     ;;
 627   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 628     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 629     ;;
 630   m68k-*-elf*)
 631     noconfigdirs="$noconfigdirs ${libgcj}"
 632     ;;
 633   m68k-*-coff*)
 634     noconfigdirs="$noconfigdirs ${libgcj}"
 635     ;;
 636   mcore-*-pe*)
 637   # The EPOC C++ environment does not support exceptions or rtti,
 638   # and so building libstdc++-v3 tends not to always work.
 639     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 640     ;;
 641   mmix-*-*)
 642     noconfigdirs="$noconfigdirs ${libgcj} gdb libgloss target-libgfortran"
 643     ;;
 644   mn10200-*-*)
 645     noconfigdirs="$noconfigdirs ${libgcj}"
 646     ;;
 647   mn10300-*-*)
 648     noconfigdirs="$noconfigdirs ${libgcj}"
 649     ;;
 650   powerpc-*-aix*)
 651     # copied from rs6000-*-* entry
 652     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 653     ;;
 654   powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
 655     target_configdirs="$target_configdirs target-winsup"
 656     noconfigdirs="$noconfigdirs gdb tcl tk make expect target-libgloss itcl gnuserv ${libgcj}"
 657     # always build newlib.
 658     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 659     ;;
 660     # This is temporary until we can link against shared libraries
 661   powerpcle-*-solaris*)
 662     noconfigdirs="$noconfigdirs gdb sim make tcl tk expect itcl gnuserv ${libgcj}"
 663     ;;
 664   powerpc-*-beos*)
 665     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
 666     ;;
 667   powerpc-*-eabi)
 668     noconfigdirs="$noconfigdirs ${libgcj}"
 669     ;;
 670   powerpc-*-eabi* | powerpcle-*-eabi* | powerpc-*-rtems* )
 671     ;;
 672   rs6000-*-lynxos*)
 673     noconfigdirs="$noconfigdirs target-newlib gprof ${libgcj}"
 674     ;;
 675   rs6000-*-aix*)
 676     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 677     ;;
 678   rs6000-*-*)
 679     noconfigdirs="$noconfigdirs gprof ${libgcj}"
 680     ;;
 681   m68k-apollo-*)
 682     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss ${libgcj}"
 683     ;;
 684   mips*-*-irix5*)
 685     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 686     ;;
 687   mips*-*-irix6*)
 688     # Linking libjava exceeds command-line length limits on at least
 689     # IRIX 6.2, but not on IRIX 6.5.
 690     # Also, boehm-gc won't build on IRIX 6.5, according to Jeffrey Oldham
 691     # <oldham@codesourcery.com>
 692     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 693     ;;
 694   mips*-dec-bsd*)
 695     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 696     ;;
 697   mips*-*-bsd*)
 698     noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
 699     ;;
 700   mipstx39-*-*)
 701     noconfigdirs="$noconfigdirs gprof ${libgcj}"   # same as generic mips
 702     ;;
 703   mips64*-*-linux*)
 704     noconfigdirs="$noconfigdirs target-newlib ${libgcj}"
 705     ;;
 706   mips*-*-linux*)
 707     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 708     ;;
 709   mips*-*-*)
 710     noconfigdirs="$noconfigdirs gprof ${libgcj}"
 711     ;;
 712   romp-*-*)
 713     noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss ${libgcj}"
 714     ;;
 715   sh-*-* | sh64-*-*)
 716     case "${host}" in
 717       i[[3456789]]86-*-vsta) ;; # don't add gprof back in
 718       i[[3456789]]86-*-go32*) ;; # don't add gprof back in
 719       i[[3456789]]86-*-msdosdjgpp*) ;; # don't add gprof back in
 720       *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
 721     esac
 722     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 723     ;;
 724   sparc-*-elf*)
 725     noconfigdirs="$noconfigdirs ${libgcj}"
 726     ;;
 727   sparc64-*-elf*)
 728     noconfigdirs="$noconfigdirs ${libgcj}"
 729     ;;
 730   sparclite-*-*)
 731     noconfigdirs="$noconfigdirs ${libgcj}"
 732     ;;
 733   sparc-*-sunos4*)
 734     noconfigdirs="$noconfigdirs ${libgcj}"
 735     if test x${is_cross_compiler} != xno ; then
 736            noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 737     else
 738            use_gnu_ld=no
 739     fi
 740     ;;
 741   sparc-*-solaris2.[[0-6]] | sparc-*-solaris2.[[0-6]].*)
 742     noconfigdirs="$noconfigdirs ${libgcj}"
 743     ;;
 744   sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
 745     ;;
 746   v810-*-*)
 747     noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libstdc++-v3 opcodes target-libgloss ${libgcj}"
 748     ;;
 749   v850-*-*)
 750     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 751     ;;
 752   v850e-*-*)
 753     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 754     ;;
 755   v850ea-*-*)
 756     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
 757     ;;
 758   vax-*-vms)
 759     noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes target-libgloss ${libgcj}"
 760     ;;
 761   vax-*-*)
 762     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 763     ;;
 764   xtensa-*-*)
 765     noconfigdirs="$noconfigdirs ${libgcj}"
 766     ;;
 767   ip2k-*-*)
 768     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
 769     ;;
 770   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
 771     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 772     ;;
 773   *-*-lynxos*)
 774     noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
 775     ;;
 776   *-*-*)
 777     noconfigdirs="$noconfigdirs ${libgcj}"
 778     ;;
 779 esac
 780
 781 # If we aren't building newlib, then don't build libgloss, since libgloss
 782 # depends upon some newlib header files.
 783 case "${noconfigdirs}" in
 784   *target-libgloss*) ;;
 785   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
 786 esac
 787
 788 # Work in distributions that contain no compiler tools, like Autoconf.
 789 tentative_cc=""
 790 host_makefile_frag=/dev/null
 791 if test -d ${srcdir}/config ; then
 792 case "${host}" in
 793   m68k-hp-hpux*)
 794     # Avoid "too much defining" errors from HPUX compiler.
 795     tentative_cc="cc -Wp,-H256000"
 796     # If "ar" in $PATH is GNU ar, the symbol table may need rebuilding.
 797     # If it's HP/UX ar, this should be harmless.
 798     RANLIB="ar ts"
 799     ;;
 800   m68k-apollo-sysv*)
 801     tentative_cc="cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DUSG"
 802     ;;
 803   m68k-apollo-bsd*)
 804     #None of the Apollo compilers can compile gas or binutils.  The preprocessor
 805     # chokes on bfd, the compiler won't let you assign integers to enums, and
 806     # other problems.  Defining CC to gcc is a questionable way to say "don't use
 807     # the apollo compiler" (the preferred version of GCC could be called cc,
 808     # or whatever), but I'm not sure leaving CC as cc is any better...
 809     #CC=cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DNO_STDARG
 810     # Used to have BISON=yacc.
 811     tentative_cc=gcc
 812     ;;
 813   m88k-dg-dgux*)
 814     tentative_cc="gcc -Wall -ansi -D__using_DGUX"
 815     ;;
 816   m88k-harris-cxux*)
 817     # Under CX/UX, we want to tell the compiler to use ANSI mode.
 818     tentative_cc="cc -Xa"
 819     host_makefile_frag="config/mh-cxux"
 820     ;;
 821   m88k-motorola-sysv*)
 822     ;;
 823   mips*-dec-ultrix*)
 824     tentative_cc="cc -Wf,-XNg1000"
 825     host_makefile_frag="config/mh-decstation"
 826     ;;
 827   mips*-nec-sysv4*)
 828     # The C compiler on NEC MIPS SVR4 needs bigger tables.
 829     tentative_cc="cc -ZXNd=5000 -ZXNg=1000"
 830     host_makefile_frag="config/mh-necv4"
 831     ;;
 832   mips*-sgi-irix4*)
 833     # Tell compiler to use K&R C.  We can't compile under the SGI Ansi
 834     # environment.  Also bump switch table size so that cp-parse will
 835     # compile.  Bump string length limit so linker builds.
 836     tentative_cc="cc -cckr -Wf,-XNg1500 -Wf,-XNk1000 -Wf,-XNh2000 -Wf,-XNl8192"
 837     ;;
 838   mips*-*-sysv4*)
 839     host_makefile_frag="config/mh-sysv4"
 840     ;;
 841   mips*-*-sysv*)
 842     # This is for a MIPS running RISC/os 4.52C.
 843
 844     # This is needed for GDB, but needs to be in the top-level make because
 845     # if a library is compiled with the bsd headers and gets linked with the
 846     # sysv system libraries all hell can break loose (e.g. a jmp_buf might be
 847     # a different size).
 848     # ptrace(2) apparently has problems in the BSD environment.  No workaround is
 849     # known except to select the sysv environment.  Could we use /proc instead?
 850     # These "sysv environments" and "bsd environments" often end up being a pain.
 851     #
 852     # This is not part of CFLAGS because perhaps not all C compilers have this
 853     # option.
 854     tentative_cc="cc -systype sysv"
 855     ;;
 856   i370-ibm-opened*)
 857     tentative_cc="c89"
 858     ;;
 859   i[[3456789]]86-*-sysv5*)
 860     host_makefile_frag="config/mh-sysv5"
 861     ;;
 862   i[[3456789]]86-*-dgux*)
 863     tentative_cc="gcc -Wall -ansi -D__using_DGUX"
 864     host_makefile_frag="config/mh-dgux386"
 865     ;;
 866   i[[3456789]]86-ncr-sysv4.3*)
 867     # The MetaWare compiler will generate a copyright message unless you
 868     # turn it off by adding the -Hnocopyr flag.
 869     tentative_cc="cc -Hnocopyr"
 870     ;;
 871   i[[3456789]]86-ncr-sysv4*)
 872     # for an NCR 3000 (i486/SVR4) system.
 873     # The NCR 3000 ships with a MetaWare compiler installed as /bin/cc.
 874     # This compiler not only emits obnoxious copyright messages every time
 875     # you run it, but it chokes and dies on a whole bunch of GNU source
 876     # files.  Default to using the AT&T compiler installed in /usr/ccs/ATT/cc.
 877     tentative_cc="/usr/ccs/ATT/cc"
 878     host_makefile_frag="config/mh-ncr3000"
 879     ;;
 880   i[[3456789]]86-*-sco3.2v5*)
 881     ;;
 882   i[[3456789]]86-*-sco*)
 883     # The native C compiler botches some simple uses of const.  Unfortunately,
 884     # it doesn't defined anything like "__sco__" for us to test for in ansidecl.h.
 885     tentative_cc="cc -Dconst="
 886     host_makefile_frag="config/mh-sco"
 887     ;;
 888   i[[3456789]]86-*-udk*)
 889     host_makefile_frag="config/mh-sysv5"
 890     ;;
 891   i[[3456789]]86-*-solaris2*)
 892     host_makefile_frag="config/mh-sysv4"
 893     ;;
 894   i[[3456789]]86-*-msdosdjgpp*)
 895     host_makefile_frag="config/mh-djgpp"
 896     ;;
 897   *-cygwin*)
 898     host_makefile_frag="config/mh-cygwin"
 899     ;;
 900   *-mingw32*)
 901     ;;
 902   *-interix*)
 903     host_makefile_frag="config/mh-interix"
 904     ;;
 905   vax-*-ultrix2*)
 906     # The old BSD pcc isn't up to compiling parts of gdb so use gcc
 907     tentative_cc=gcc
 908     ;;
 909   *-*-solaris2*)
 910     host_makefile_frag="config/mh-solaris"
 911     ;;
 912   m68k-sun-sunos*)
 913     # Sun's C compiler needs the -J flag to be able to compile cp-parse.c
 914     # without overflowing the jump tables (-J says to use a 32 bit table)
 915     tentative_cc="cc -J"
 916     ;;
 917   *-hp-hpux*)
 918     tentative_cc="cc -Wp,-H256000"
 919     ;;
 920   *-*-hiux*)
 921     tentative_cc="cc -Wp,-H256000"
 922     ;;
 923   rs6000-*-lynxos*)
 924     # /bin/cc is less than useful for our purposes.  Always use GCC
 925     tentative_cc="/usr/cygnus/progressive/bin/gcc"
 926     host_makefile_frag="config/mh-lynxrs6k"
 927     ;;
 928   powerpc-*-darwin*)
 929     host_makefile_frag="config/mh-ppc-darwin"
 930     ;;
 931   *-*-lynxos*)
 932     # /bin/cc is less than useful for our purposes.  Always use GCC
 933     tentative_cc="/bin/gcc"
 934     ;;
 935   *-*-sysv4*)
 936     host_makefile_frag="config/mh-sysv4"
 937     ;;
 938   # This is placed last to prevent interfering with the cases above.
 939   i[[3456789]]86-*-*)
 940     # Build the stage2 and stage3 compilers with -fomit-frame-pointer.
 941     host_makefile_frag="config/mh-x86omitfp"
 942     ;;
 943 esac
 944 fi
 945
 946 # If we aren't going to be using gcc, see if we can extract a definition
 947 # of CC from the fragment.
 948 # Actually, use the 'pre-extracted' version above.
 949 if test -z "${CC}" && test "${build}" = "${host}" ; then
 950   IFS="${IFS=   }"; save_ifs="$IFS"; IFS="${IFS}:"
 951   found=
 952   for dir in $PATH; do
 953     test -z "$dir" && dir=.
 954     if test -f $dir/gcc; then
 955       found=yes
 956       break
 957     fi
 958   done
 959   IFS="$save_ifs"
 960   if test -z "${found}" && test -n "${tentative_cc}" ; then
 961     CC=$tentative_cc
 962   fi
 963 fi
 964
 965 if test "${build}" != "${host}" ; then
 966   # If we are doing a Canadian Cross, in which the host and build systems
 967   # are not the same, we set reasonable default values for the tools.
 968
 969   CC=${CC-${host_alias}-gcc}
 970   CFLAGS=${CFLAGS-"-g -O2"}
 971   CXX=${CXX-${host_alias}-c++}
 972   CXXFLAGS=${CXXFLAGS-"-g -O2"}
 973   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
 974   CC_FOR_TARGET=${CC_FOR_TARGET-${target_alias}-gcc}
 975   CXX_FOR_TARGET=${CXX_FOR_TARGET-${target_alias}-c++}
 976   GCJ_FOR_TARGET=${GCJ_FOR_TARGET-${target_alias}-gcj}
 977   GCC_FOR_TARGET=${GCC_FOR_TARGET-${CC_FOR_TARGET-${target_alias}-gcc}}
 978   BUILD_PREFIX=${build_alias}-
 979   BUILD_PREFIX_1=${build_alias}-
 980
 981 else
 982   # Set reasonable default values for some tools even if not Canadian.
 983   # Of course, these are different reasonable default values, originally
 984   # specified directly in the Makefile.
 985   # We don't export, so that autoconf can do its job.
 986   # Note that all these settings are above the fragment inclusion point
 987   # in Makefile.in, so can still be overridden by fragments.
 988   # This is all going to change when we autoconfiscate...
 989
 990   CC_FOR_BUILD="\$(CC)"
 991   GCC_FOR_TARGET="\$(USUAL_GCC_FOR_TARGET)"
 992   BUILD_PREFIX=
 993   BUILD_PREFIX_1=loser-
 994
 995   AC_PROG_CC
 996
 997   # We must set the default linker to the linker used by gcc for the correct
 998   # operation of libtool.  If LD is not defined and we are using gcc, try to
 999   # set the LD default to the ld used by gcc.
1000   if test -z "$LD"; then
1001     if test "$GCC" = yes; then
1002       case $build in
1003       *-*-mingw*)
1004         gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1005       *)
1006         gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1007       esac
1008       case $gcc_prog_ld in
1009       # Accept absolute paths.
1010       [[\\/]* | [A-Za-z]:[\\/]*)]
1011         LD="$gcc_prog_ld" ;;
1012       esac
1013     fi
1014   fi
1015
1016   CXX=${CXX-"c++"}
1017   CFLAGS=${CFLAGS-"-g"}
1018   CXXFLAGS=${CXXFLAGS-"-g -O2"}
1019 fi
1020
1021 ACX_PROG_GNAT
1022 ACX_PROG_CMP_IGNORE_INITIAL
1023
1024 # Check for GMP and MPFR
1025 gmplibs=
1026 gmpinc=
1027 have_gmp=yes
1028 # Specify a location for mpfr
1029 # check for this first so it ends up on the link line before gmp.
1030 AC_ARG_WITH(mpfr-dir, [  --with-mpfr-dir=PATH    Specify source directory for MPFR library])
1031
1032 if test "x$with_mpfr_dir" != x; then
1033   gmpinc="-I$with_mpfr_dir/mpfr"
1034   gmplibs="$with_mpfr_dir/libmpfr.a"
1035 else
1036   gmplibs="-lmpfr"
1037 fi
1038
1039 AC_ARG_WITH(mpfr, [  --with-mpfr=PATH        Specify directory for installed MPFR library])
1040
1041 if test "x$with_mpfr" != x; then
1042   gmplibs="-L$with_mpfr/lib $gmplibs"
1043   gmpinc="-I$with_mpfr/include"
1044 fi
1045
1046 # Specify a location for gmp
1047 AC_ARG_WITH(gmp-dir, [  --with-gmp-dir=PATH     Specify source directory for GMP library])
1048
1049 if test "x$with_gmp_dir" != x; then
1050   gmpinc="$gmpinc -I$with_gmp_dir"
1051   if test -f "$with_gmp_dir/.libs/libgmp.a"; then
1052     gmplibs="$gmplibs $with_gmp_dir/.libs/libgmp.a"
1053   elif test -f "$with_gmp_dir/_libs/libgmp.a"; then
1054     gmplibs="$gmplibs $with_gmp_dir/_libs/libgmp.a"
1055   fi
1056   # One of the later tests will catch the error if neither library is present.
1057 else
1058   gmplibs="$gmplibs -lgmp"
1059 fi
1060
1061 AC_ARG_WITH(gmp, [  --with-gmp=PATH         Specify directory for installed GMP library])
1062
1063 if test "x$with_gmp" != x; then
1064   gmplibs="-L$with_gmp/lib $gmplibs"
1065   gmpinc="-I$with_gmp/include $gmpinc"
1066 fi
1067
1068 saved_CFLAGS="$CFLAGS"
1069 CFLAGS="$CFLAGS $gmpinc"
1070 # Check GMP actually works
1071 AC_MSG_CHECKING([for correct version of gmp.h])
1072 AC_TRY_COMPILE([#include "gmp.h"],[
1073 #if __GNU_MP_VERSION < 3
1074 choke me
1075 #endif
1076 ], [AC_MSG_RESULT([yes])],
1077   [AC_MSG_RESULT([no]); have_gmp=no])
1078
1079 if test x"$have_gmp" = xyes; then
1080   AC_MSG_CHECKING([for MPFR])
1081
1082   saved_LIBS="$LIBS"
1083   LIBS="$LIBS $gmplibs"
1084   AC_TRY_LINK([#include <gmp.h>
1085 #include <mpfr.h>], [mpfr_t n; mpfr_init(n);],
1086     [AC_MSG_RESULT([yes])],  [AC_MSG_RESULT([no]); have_gmp=no])
1087   LIBS="$saved_LIBS"
1088   CFLAGS="$saved_CFLAGS"
1089 fi
1090
1091 # Flags needed for both GMP and/or MPFR
1092 AC_SUBST(gmplibs)
1093 AC_SUBST(gmpinc)
1094
1095 # By default, C is the only stage 1 language.
1096 stage1_languages=c
1097 AC_SUBST(stage1_languages)
1098
1099 # Figure out what language subdirectories are present.
1100 # Look if the user specified --enable-languages="..."; if not, use
1101 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1102 # go away some day.
1103 # NB:  embedded tabs in this IF block -- do not untabify
1104 if test -d ${srcdir}/gcc; then
1105   if test x"${enable_languages+set}" != xset; then
1106     if test x"${LANGUAGES+set}" = xset; then
1107       enable_languages="${LANGUAGES}"
1108         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1109     else
1110       enable_languages=all
1111     fi
1112   else
1113     if test x"${enable_languages}" = x ||
1114        test x"${enable_languages}" = xyes;
1115        then
1116       echo configure.in: --enable-languages needs at least one language argument 1>&2
1117       exit 1
1118     fi
1119   fi
1120   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1121
1122   # First scan to see if an enabled language requires some other language.
1123   # We assume that a given config-lang.in will list all the language
1124   # front ends it requires, even if some are required indirectly.
1125   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1126     case ${lang_frag} in
1127       ..) ;;
1128       # The odd quoting in the next line works around
1129       # an apparent bug in bash 1.12 on linux.
1130       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1131       *)
1132         # From the config-lang.in, get $language, $lang_requires
1133         language=
1134         lang_requires=
1135         . ${lang_frag}
1136         for other in ${lang_requires} ; do
1137           case ,${enable_languages}, in
1138             *,$other,*) ;;
1139             *,all,*) ;;
1140             *,$language,*)
1141               echo " \`$other' language required by \`$language'; enabling" 1>&2
1142               enable_languages="${enable_languages},${other}"
1143               ;;
1144           esac
1145         done
1146         ;;
1147     esac
1148   done
1149
1150   new_enable_languages=c
1151   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1152   potential_languages=c
1153
1154   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1155     case ${lang_frag} in
1156       ..) ;;
1157       # The odd quoting in the next line works around
1158       # an apparent bug in bash 1.12 on linux.
1159       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1160       *)
1161         # From the config-lang.in, get $language, $target_libs,
1162         # $lang_dirs, $boot_language, and $build_by_default
1163         language=
1164         target_libs=
1165         lang_dirs=
1166         boot_language=
1167         build_by_default=
1168         need_gmp=
1169         . ${lang_frag}
1170         potential_languages="${potential_languages},${language}"
1171         # This is quite sensitive to the ordering of the case statement arms.
1172         case ,${enable_languages},:${language}:${have_gnat}:${build_by_default} in
1173           *::*:*)
1174             echo "${lang_frag} doesn't set \$language." 1>&2
1175             exit 1
1176             ;;
1177           *:ada:no:*)
1178             # Ada was requested with no preexisting GNAT.  Disable unconditionally.
1179             add_this_lang=no
1180             ;;
1181           *,${language},*:*:*:*)
1182             # Language was explicitly selected; include it.
1183             add_this_lang=yes
1184             ;;
1185           *,all,*:*:*:no)
1186             # 'all' was selected, but this is not a default language
1187             # so do not include it.
1188             add_this_lang=no
1189             ;;
1190           *,all,*:*:*:*)
1191             # 'all' was selected and this is a default language; include it.
1192             add_this_lang=yes
1193             ;;
1194           *)
1195             add_this_lang=no
1196             ;;
1197         esac
1198
1199         # Disable languages that need GMP if it isn't available.
1200         case ,${enable_languages},:${have_gmp}:${need_gmp} in
1201           *,${language},*:no:yes)
1202             # Specifically requested language; tell them.
1203             AC_MSG_ERROR([GMP with MPFR support is required to build $language])
1204             ;;
1205           *:no:yes)
1206             # Silently disable.
1207             add_this_lang=no
1208             ;;
1209         esac
1210
1211         case $add_this_lang in
1212           no)
1213             # Remove language-dependent dirs.
1214             eval noconfigdirs='"$noconfigdirs "'\"$target_libs $lang_dirs\"
1215             ;;
1216           *)
1217             new_enable_languages="$new_enable_languages,$language"
1218             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1219             case ${boot_language} in
1220               yes)
1221                 # Add to (comma-separated) list of stage 1 languages.
1222                 stage1_languages="${stage1_languages},${language}"
1223                 ;;
1224             esac
1225             ;;
1226         esac
1227         ;;
1228     esac
1229   done
1230
1231   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
1232   if test "x$missing_languages" != x; then
1233     AC_MSG_ERROR([
1234 The following requested languages could not be built: ${missing_languages}
1235 Recognised languages are: ${potential_languages}])
1236   fi
1237
1238   if test "x$new_enable_languages" != "x$enable_languages"; then
1239     echo The following languages will be built: ${new_enable_languages}
1240   fi
1241   enable_languages="$new_enable_languages"
1242   ac_configure_args=`echo " $ac_configure_args" | sed -e 's/ --enable-languages=[[^ ]]*//' -e 's/$/ --enable-languages='"$enable_languages"/ `
1243 fi
1244
1245 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
1246 # $build_configdirs and $target_configdirs.
1247 # If we have the source for $noconfigdirs entries, add them to $notsupp.
1248
1249 notsupp=""
1250 for dir in . $skipdirs $noconfigdirs ; do
1251   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
1252   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1253     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
1254     if test -r $srcdir/$dirname/configure ; then
1255       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1256         true
1257       else
1258         notsupp="$notsupp $dir"
1259       fi
1260     fi
1261   fi
1262   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1263     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
1264     if test -r $srcdir/$dirname/configure ; then
1265       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1266         true
1267       else
1268         notsupp="$notsupp $dir"
1269       fi
1270     fi
1271   fi
1272   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1273     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
1274     if test -r $srcdir/$dirname/configure ; then
1275       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1276         true
1277       else
1278         notsupp="$notsupp $dir"
1279       fi
1280     fi
1281   fi
1282 done
1283
1284 # Sometimes the tools are distributed with libiberty but with no other
1285 # libraries.  In that case, we don't want to build target-libiberty.
1286 if test -n "${target_configdirs}" ; then
1287   others=
1288   for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
1289     if test "$i" != "libiberty" ; then
1290       if test -r $srcdir/$i/configure ; then
1291         others=yes;
1292         break;
1293       fi
1294     fi
1295   done
1296   if test -z "${others}" ; then
1297     target_configdirs=
1298   fi
1299 fi
1300
1301 # Quietly strip out all directories which aren't configurable in this tree.
1302 # This relies on all configurable subdirectories being autoconfiscated, which
1303 # is now the case.
1304 build_configdirs_all="$build_configdirs"
1305 build_configdirs=
1306 for i in ${build_configdirs_all} ; do
1307   j=`echo $i | sed -e s/build-//g`
1308   if test -f ${srcdir}/$j/configure ; then
1309     build_configdirs="${build_configdirs} $i"
1310   fi
1311 done
1312
1313 configdirs_all="$configdirs"
1314 configdirs=
1315 for i in ${configdirs_all} ; do
1316   if test -f ${srcdir}/$i/configure ; then
1317     configdirs="${configdirs} $i"
1318   fi
1319 done
1320
1321 target_configdirs_all="$target_configdirs"
1322 target_configdirs=
1323 for i in ${target_configdirs_all} ; do
1324   j=`echo $i | sed -e s/target-//g`
1325   if test -f ${srcdir}/$j/configure ; then
1326     target_configdirs="${target_configdirs} $i"
1327   fi
1328 done
1329
1330 # Produce a warning message for the subdirs we can't configure.
1331 # This isn't especially interesting in the Cygnus tree, but in the individual
1332 # FSF releases, it's important to let people know when their machine isn't
1333 # supported by the one or two programs in a package.
1334
1335 if test -n "${notsupp}" && test -z "${norecursion}" ; then
1336   # If $appdirs is non-empty, at least one of those directories must still
1337   # be configured, or we error out.  (E.g., if the gas release supports a
1338   # specified target in some subdirs but not the gas subdir, we shouldn't
1339   # pretend that all is well.)
1340   if test -n "$appdirs" ; then
1341     for dir in $appdirs ; do
1342       if test -r $dir/Makefile.in ; then
1343         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1344           appdirs=""
1345           break
1346         fi
1347         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
1348           appdirs=""
1349           break
1350         fi
1351       fi
1352     done
1353     if test -n "$appdirs" ; then
1354       echo "*** This configuration is not supported by this package." 1>&2
1355       exit 1
1356     fi
1357   fi
1358   # Okay, some application will build, or we don't care to check.  Still
1359   # notify of subdirs not getting built.
1360   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
1361   echo "    ${notsupp}" 1>&2
1362   echo "    (Any other directories should still work fine.)" 1>&2
1363 fi
1364
1365 case "$host" in
1366   *msdosdjgpp*)
1367     enable_gdbtk=no ;;
1368 esac
1369
1370 copy_dirs=
1371
1372 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
1373 # the named directory are copied to $(tooldir)/sys-include.
1374 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
1375   if test x${is_cross_compiler} = xno ; then
1376     echo 1>&2 '***' --with-headers is only supported when cross compiling
1377     exit 1
1378   fi
1379   if test x"${with_headers}" != xyes ; then
1380     case "${exec_prefixoption}" in
1381     "") x=${prefix} ;;
1382     *) x=${exec_prefix} ;;
1383     esac
1384     copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/sys-include"
1385   fi
1386 fi
1387
1388 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
1389 # the name directories are copied to $(tooldir)/lib.  Multiple directories
1390 # are permitted.
1391 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
1392   if test x${is_cross_compiler} = xno ; then
1393     echo 1>&2 '***' --with-libs is only supported when cross compiling
1394     exit 1
1395   fi
1396   if test x"${with_libs}" != xyes ; then
1397     # Copy the libraries in reverse order, so that files in the first named
1398     # library override files in subsequent libraries.
1399     case "${exec_prefixoption}" in
1400     "") x=${prefix} ;;
1401     *) x=${exec_prefix} ;;
1402     esac
1403     for l in ${with_libs}; do
1404       copy_dirs="$l $x/${target_alias}/lib ${copy_dirs}"
1405     done
1406   fi
1407 fi
1408
1409 # Handle ${copy_dirs}
1410 set fnord ${copy_dirs}
1411 shift
1412 while test $# != 0 ; do
1413   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
1414     :
1415   else
1416     echo Copying $1 to $2
1417
1418     # Use the install script to create the directory and all required
1419     # parent directories.
1420     if test -d $2 ; then
1421       :
1422     else
1423       echo >config.temp
1424       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
1425     fi
1426
1427     # Copy the directory, assuming we have tar.
1428     # FIXME: Should we use B in the second tar?  Not all systems support it.
1429     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
1430
1431     # It is the responsibility of the user to correctly adjust all
1432     # symlinks.  If somebody can figure out how to handle them correctly
1433     # here, feel free to add the code.
1434
1435     echo $1 > $2/COPIED
1436   fi
1437   shift; shift
1438 done
1439
1440 extra_arflags_for_target=
1441 extra_nmflags_for_target=
1442 extra_ranlibflags_for_target=
1443 target_makefile_frag=/dev/null
1444 case "${target}" in
1445   *-*-netware*)
1446     target_makefile_frag="config/mt-netware"
1447     ;;
1448   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
1449     target_makefile_frag="config/mt-gnu"
1450     ;;
1451   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
1452     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
1453     # commands to handle both 32-bit and 64-bit objects.  These flags are
1454     # harmless if we're using GNU nm or ar.
1455     extra_arflags_for_target=" -X32_64"
1456     extra_nmflags_for_target=" -B -X32_64"
1457     ;;
1458   *-*-darwin*)
1459     # ranlib from Darwin requires the -c flag to look at common symbols.
1460     extra_ranlibflags_for_target=" -c"
1461     ;;
1462   mips*-*-pe | sh*-*-pe | *arm-wince-pe)
1463     target_makefile_frag="config/mt-wince"
1464     ;;
1465 esac
1466
1467 alphaieee_frag=/dev/null
1468 case $target in
1469   alpha*-*-*)
1470     # This just makes sure to use the -mieee option to build target libs.
1471     # This should probably be set individually by each library.
1472     alphaieee_frag="config/mt-alphaieee"
1473     ;;
1474 esac
1475
1476 # If --enable-target-optspace always use -Os instead of -O2 to build
1477 # the target libraries, similarly if it is not specified, use -Os
1478 # on selected platforms.
1479 ospace_frag=/dev/null
1480 case "${enable_target_optspace}:${target}" in
1481   yes:*)
1482     ospace_frag="config/mt-ospace"
1483     ;;
1484   :d30v-*)
1485     ospace_frag="config/mt-d30v"
1486     ;;
1487   :m32r-* | :d10v-* | :fr30-*)
1488     ospace_frag="config/mt-ospace"
1489     ;;
1490   no:* | :*)
1491     ;;
1492   *)
1493     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
1494     ;;
1495 esac
1496
1497 # Set with_gnu_as and with_gnu_ld as appropriate.
1498 #
1499 # This is done by determining whether or not the appropriate directory
1500 # is available, and by checking whether or not specific configurations
1501 # have requested that this magic not happen.
1502 #
1503 # The command line options always override the explicit settings in
1504 # configure.in, and the settings in configure.in override this magic.
1505 #
1506 # If the default for a toolchain is to use GNU as and ld, and you don't
1507 # want to do that, then you should use the --without-gnu-as and
1508 # --without-gnu-ld options for the configure script.
1509
1510 if test x${use_gnu_as} = x &&
1511    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
1512   with_gnu_as=yes
1513   extra_host_args="$extra_host_args --with-gnu-as"
1514 fi
1515
1516 if test x${use_gnu_ld} = x &&
1517    echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 ; then
1518   with_gnu_ld=yes
1519   extra_host_args="$extra_host_args --with-gnu-ld"
1520 fi
1521
1522 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
1523 # can detect this case.
1524
1525 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
1526   with_newlib=yes
1527   extra_host_args="$extra_host_args --with-newlib"
1528 fi
1529
1530 # Default to using --with-stabs for certain targets.
1531 if test x${with_stabs} = x ; then
1532   case "${target}" in
1533   mips*-*-irix[[56]]*)
1534     ;;
1535   mips*-*-* | alpha*-*-osf*)
1536     with_stabs=yes;
1537     extra_host_args="${extra_host_args} --with-stabs"
1538     ;;
1539   esac
1540 fi
1541
1542 # hpux11 in 64bit mode has libraries in a weird place.  Arrange to find
1543 # them automatically.
1544 case "${host}" in
1545   hppa*64*-*-hpux11*)
1546     extra_host_args="$extra_host_args -x-libraries=/usr/lib/pa20_64 -x-includes=/usr/X11R6/include"
1547     ;;
1548 esac
1549
1550 # Some systems (e.g., one of the i386-aix systems the gas testers are
1551 # using) don't handle "\$" correctly, so don't use it here.
1552 tooldir='${exec_prefix}'/${target_alias}
1553 build_tooldir=${tooldir}
1554
1555 # Generate default definitions for YACC, M4, LEX and other programs that run
1556 # on the build machine.  These are used if the Makefile can't locate these
1557 # programs in objdir.
1558 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
1559 AC_CHECK_PROGS([CONFIGURED_BISON], [bison], [$MISSING bison])
1560 AC_CHECK_PROGS([CONFIGURED_YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
1561 AC_CHECK_PROGS([CONFIGURED_M4], [gm4 gnum4 m4], [$MISSING m4])
1562 AC_CHECK_PROGS([CONFIGURED_FLEX], [flex], [$MISSING flex])
1563 AC_CHECK_PROGS([CONFIGURED_LEX], [flex lex], [$MISSING flex])
1564 AC_CHECK_PROGS([CONFIGURED_MAKEINFO], makeinfo, [$MISSING makeinfo])
1565
1566 # Create a .gdbinit file which runs the one in srcdir
1567 # and tells GDB to look there for source files.
1568
1569 if test -r ${srcdir}/.gdbinit ; then
1570   case ${srcdir} in
1571     .) ;;
1572     *) cat > ./.gdbinit <<EOF
1573 # ${NO_EDIT}
1574 dir ${srcdir}
1575 dir .
1576 source ${srcdir}/.gdbinit
1577 EOF
1578     ;;
1579   esac
1580 fi
1581
1582 # Make sure that the compiler is able to generate an executable.  If it
1583 # can't, we are probably in trouble.  We don't care whether we can run the
1584 # executable--we might be using a cross compiler--we only care whether it
1585 # can be created.  At this point the main configure script has set CC.
1586 we_are_ok=no
1587 echo "int main () { return 0; }" > conftest.c
1588 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
1589 if test $? = 0 ; then
1590   if test -s conftest || test -s conftest.exe ; then
1591     we_are_ok=yes
1592   fi
1593 fi
1594 case $we_are_ok in
1595   no)
1596     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
1597     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
1598     rm -f conftest*
1599     exit 1
1600     ;;
1601 esac
1602 rm -f conftest*
1603
1604 # The Solaris /usr/ucb/cc compiler does not appear to work.
1605 case "${host}" in
1606   sparc-sun-solaris2*)
1607       CCBASE="`echo ${CC-cc} | sed 's/ .*$//'`"
1608       if test "`type $CCBASE | sed 's/^[[^/]]*//'`" = "/usr/ucb/cc" ; then
1609           could_use=
1610           test -d /opt/SUNWspro/bin && could_use="/opt/SUNWspro/bin"
1611           if test -d /opt/cygnus/bin ; then
1612               if test "$could_use" = "" ; then
1613                   could_use="/opt/cygnus/bin"
1614               else
1615                   could_use="$could_use or /opt/cygnus/bin"
1616               fi
1617           fi
1618         if test "$could_use" = "" ; then
1619             echo "Warning: compilation may fail because you're using"
1620             echo "/usr/ucb/cc.  You should change your PATH or CC "
1621             echo "variable and rerun configure."
1622         else
1623             echo "Warning: compilation may fail because you're using"
1624             echo "/usr/ucb/cc, when you should use the C compiler from"
1625             echo "$could_use.  You should change your"
1626             echo "PATH or CC variable and rerun configure."
1627         fi
1628       fi
1629   ;;
1630 esac
1631
1632 case "${host}" in
1633   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
1634   *-*-darwin* | *-*-rhapsody* ) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
1635   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
1636 esac
1637
1638 # Record target_configdirs and the configure arguments for target and
1639 # build configuration in Makefile.
1640 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
1641 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
1642
1643 # Determine whether gdb needs tk/tcl or not.
1644 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
1645 # and in that case we want gdb to be built without tk.  Ugh!
1646 # In fact I believe gdb is the *only* package directly dependent on tk,
1647 # so we should be able to put the 'maybe's in unconditionally and
1648 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
1649 # 100% sure that that's safe though.
1650
1651 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
1652 case "$enable_gdbtk" in
1653   no)
1654     GDB_TK="" ;;
1655   yes)
1656     GDB_TK="${gdb_tk}" ;;
1657   *)
1658     # Only add the dependency on gdbtk when GDBtk is part of the gdb
1659     # distro.  Eventually someone will fix this and move Insight, nee
1660     # gdbtk to a separate directory.
1661     if test -d ${srcdir}/gdb/gdbtk ; then
1662       GDB_TK="${gdb_tk}"
1663     else
1664       GDB_TK=""
1665     fi
1666     ;;
1667 esac
1668
1669 # Strip out unwanted targets.
1670
1671 # While at that, we remove Makefiles if we were started for recursive
1672 # configuration, so that the top-level Makefile reconfigures them,
1673 # like we used to do when configure itself was recursive.
1674
1675 # Loop over modules.  $extrasub must be used with care, limiting as
1676 # much as possible the usage of range addresses.  That's because autoconf
1677 # splits the sed script to overcome limits in the number of commands,
1678 # and relying on carefully-timed sed passes may turn out to be very hard
1679 # to maintain later.  In this particular case, you just have to be careful
1680 # not to nest @if/@endif pairs, because configure will not warn you at all.
1681
1682 AC_ARG_ENABLE([bootstrap],
1683 [  --enable-bootstrap[=lean]     Enable bootstrapping [no]],,
1684 enable_bootstrap=default)
1685
1686 # Issue errors and warnings for invalid/strange bootstrap combinations.
1687 case "$configdirs" in
1688   *gcc*) have_compiler=yes ;;
1689   *) have_compiler=no ;;
1690 esac
1691
1692 case "$have_compiler:$host:$target:$enable_bootstrap" in
1693   *:*:*:no) ;;
1694
1695   # Default behavior.  (We'll) enable bootstrap if we have a compiler
1696   # and we are in a native configuration.
1697   yes:$build:$build:default)
1698     # This will become 'yes'
1699     enable_bootstrap=no ;;
1700
1701   *:*:*:default)
1702     enable_bootstrap=no ;;
1703
1704   # We have a compiler and we are in a native configuration, bootstrap is ok
1705   yes:$build:$build:yes | yes:$build:$build:lean)
1706     ;;
1707
1708   # Other configurations, but we have a compiler.  Assume the user knows
1709   # what he's doing.
1710   yes:*:*:yes | yes:*:*:lean)
1711     AC_MSG_WARN([trying to bootstrap a cross compiler])
1712     ;;
1713
1714   # No compiler: if they passed --enable-bootstrap explicitly, fail
1715   no:*:*:yes | no:*:*:lean)
1716     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1717
1718   # Fail if wrong command line
1719   *)
1720     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1721     ;;
1722 esac
1723
1724 # Adjust the toplevel makefile according to whether bootstrap was selected.
1725 case "$enable_bootstrap" in
1726   yes)
1727     bootstrap_lean='#'
1728     default_target=bootstrap
1729     bootstrap_suffix=bootstrap ;;
1730   lean)
1731     bootstrap_lean=''
1732     default_target=bootstrap
1733     bootstrap_suffix=bootstrap ;;
1734   no)
1735     default_target=all
1736     bootstrap_suffix=no-bootstrap ;;
1737 esac
1738 AC_SUBST(bootstrap_lean)
1739 AC_SUBST(default_target)
1740
1741 for module in ${build_configdirs} ; do
1742   if test -z "${no_recursion}" \
1743      && test -f ${build_subdir}/${module}/Makefile; then
1744     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
1745     rm -f ${build_subdir}/${module}/Makefile
1746   fi
1747   extrasub="$extrasub
1748 /^@if build-$module\$/d
1749 /^@endif build-$module\$/d
1750 /^@if build-$module-$bootstrap_suffix\$/d
1751 /^@endif build-$module-$bootstrap_suffix\$/d"
1752 done
1753 for module in ${configdirs} ; do
1754   if test -z "${no_recursion}" \
1755      && test -f ${module}/Makefile; then
1756     echo 1>&2 "*** removing ${module}/Makefile to force reconfigure"
1757     rm -f ${module}/Makefile
1758   fi
1759   extrasub="$extrasub
1760 /^@if $module\$/d
1761 /^@endif $module\$/d
1762 /^@if $module-$bootstrap_suffix\$/d
1763 /^@endif $module-$bootstrap_suffix\$/d"
1764 done
1765 for module in ${target_configdirs} ; do
1766   if test -z "${no_recursion}" \
1767      && test -f ${target_subdir}/${module}/Makefile; then
1768     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
1769     rm -f ${target_subdir}/${module}/Makefile
1770   fi
1771   extrasub="$extrasub
1772 /^@if target-$module\$/d
1773 /^@endif target-$module\$/d
1774 /^@if target-$module-$bootstrap_suffix\$/d
1775 /^@endif target-$module-$bootstrap_suffix\$/d"
1776 done
1777
1778 extrasub="$extrasub
1779 /^@if /,/^@endif /d"
1780
1781 # Create the serialization dependencies.  This uses a temporary file.
1782
1783 AC_ARG_ENABLE([serial-configure],
1784 [  --enable-serial-[{host,target,build}-]configure
1785                           Force sequential configuration of
1786                           sub-packages for the host, target or build
1787                           machine, or all sub-packages])
1788
1789 case ${enable_serial_configure} in
1790   yes)
1791     enable_serial_build_configure=yes
1792     enable_serial_host_configure=yes
1793     enable_serial_target_configure=yes
1794     ;;
1795 esac
1796
1797 # These force 'configure's to be done one at a time, to avoid problems
1798 # with contention over a shared config.cache.
1799 rm -f serdep.tmp
1800 echo '# serdep.tmp' > serdep.tmp
1801 olditem=
1802 test "x${enable_serial_build_configure}" = xyes &&
1803 for item in ${build_configdirs} ; do
1804   case ${olditem} in
1805     "") ;;
1806     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
1807   esac
1808   olditem=${item}
1809 done
1810 olditem=
1811 test "x${enable_serial_host_configure}" = xyes &&
1812 for item in ${configdirs} ; do
1813   case ${olditem} in
1814     "") ;;
1815     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
1816   esac
1817   olditem=${item}
1818 done
1819 olditem=
1820 test "x${enable_serial_target_configure}" = xyes &&
1821 for item in ${target_configdirs} ; do
1822   case ${olditem} in
1823     "") ;;
1824     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
1825   esac
1826   olditem=${item}
1827 done
1828 serialization_dependencies=serdep.tmp
1829 AC_SUBST_FILE(serialization_dependencies)
1830
1831 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
1832 # target and nonopt.  These are the ones we might not want to pass
1833 # down to subconfigures.  Also strip program-prefix, program-suffix,
1834 # and program-transform-name, so that we can pass down a consistent
1835 # program-transform-name.  If autoconf has put single quotes around
1836 # any of these arguments (because they contain shell metacharacters)
1837 # then this will fail; in practice this only happens for
1838 # --program-transform-name, so be sure to override --program-transform-name
1839 # at the end of the argument list.
1840 # These will be expanded by make, so quote '$'.
1841 cat <<\EOF_SED > conftestsed
1842 s/ --no[[^ ]]*/ /g
1843 s/ --c[[a-z-]]*[[= ]][[^ ]]*//g
1844 s/ --sr[[a-z-]]*[[= ]][[^ ]]*//g
1845 s/ --ho[[a-z-]]*[[= ]][[^ ]]*//g
1846 s/ --bu[[a-z-]]*[[= ]][[^ ]]*//g
1847 s/ --t[[a-z-]]*[[= ]][[^ ]]*//g
1848 s/ --program-[[pst]][[a-z-]]*[[= ]][[^ ]]*//g
1849 s/ -cache-file[[= ]][[^ ]]*//g
1850 s/ -srcdir[[= ]][[^ ]]*//g
1851 s/ -host[[= ]][[^ ]]*//g
1852 s/ -build[[= ]][[^ ]]*//g
1853 s/ -target[[= ]][[^ ]]*//g
1854 s/ -program-prefix[[= ]][[^ ]]*//g
1855 s/ -program-suffix[[= ]][[^ ]]*//g
1856 s/ -program-transform-name[[= ]][[^ ]]*//g
1857 s/ [[^' -][^ ]*] / /
1858 s/^ *//;s/ *$//
1859 s,\$,$$,g
1860 EOF_SED
1861 sed -f conftestsed <<EOF_SED > conftestsed.out
1862  ${ac_configure_args}
1863 EOF_SED
1864 baseargs=`cat conftestsed.out`
1865 rm -f conftestsed conftestsed.out
1866
1867 # Add in --program-transform-name, after --program-prefix and
1868 # --program-suffix have been applied to it.  Autoconf has already
1869 # doubled dollar signs and backslashes in program_transform_name; we want
1870 # the backslashes un-doubled, and then the entire thing wrapped in single
1871 # quotes, because this will be expanded first by make and then by the shell.
1872 # Also, because we want to override the logic in subdir configure scripts to
1873 # choose program_transform_name, replace any s,x,x, with s,y,y,.
1874 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
1875 ${program_transform_name}
1876 EOF_SED
1877 gcc_transform_name=`cat conftestsed.out`
1878 rm -f conftestsed.out
1879 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
1880
1881 # For the build-side libraries, we just need to pretend we're native,
1882 # and not use the same cache file.  Multilibs are neither needed nor
1883 # desired.
1884 build_configargs="--cache-file=../config.cache --build=${build_alias} --host=${build_alias} --target=${target_alias} ${baseargs}"
1885
1886 # For host modules, accept cache file option, or specification as blank.
1887 case "${cache_file}" in
1888 "") # empty
1889   cache_file_option="" ;;
1890 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
1891   cache_file_option="--cache-file=${cache_file}" ;;
1892 *) # relative path
1893   cache_file_option="--cache-file=../${cache_file}" ;;
1894 esac
1895
1896 # Host dirs don't like to share a cache file either, horribly enough.
1897 # This seems to be due to autoconf 2.5x stupidity.
1898 host_configargs="--cache-file=./config.cache --build=${build_alias} --host=${host_alias} --target=${target_alias} ${extra_host_args} ${baseargs}"
1899
1900 target_configargs=${baseargs}
1901
1902 # Passing a --with-cross-host argument lets the target libraries know
1903 # whether they are being built with a cross-compiler or being built
1904 # native.  However, it would be better to use other mechanisms to make the
1905 # sorts of decisions they want to make on this basis.  Please consider
1906 # this option to be deprecated.  FIXME.
1907 if test x${is_cross_compiler} = xyes ; then
1908   target_configargs="--with-cross-host=${host_alias} ${target_configargs}"
1909 fi
1910
1911 # Default to --enable-multilib.
1912 if test x${enable_multilib} = x ; then
1913   target_configargs="--enable-multilib ${target_configargs}"
1914 fi
1915
1916 # Pass --with-newlib if appropriate.  Note that target_configdirs has
1917 # changed from the earlier setting of with_newlib.
1918 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
1919   target_configargs="--with-newlib ${target_configargs}"
1920 fi
1921
1922 # Different target subdirs use different values of certain variables
1923 # (notably CXX).  Worse, multilibs use *lots* of different values.
1924 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
1925 # it doesn't automatically accept command-line overrides of them.
1926 # This means it's not safe for target subdirs to share a cache file,
1927 # which is disgusting, but there you have it.  Hopefully this can be
1928 # fixed in future.  It's still worthwhile to use a cache file for each
1929 # directory.  I think.
1930
1931 # Pass the appropriate --build, --host, --target and --cache-file arguments.
1932 # We need to pass --target, as newer autoconf's requires consistency
1933 # for target_alias and gcc doesn't manage it consistently.
1934 target_configargs="--cache-file=./config.cache --build=${build_alias} --host=${target_alias} --target=${target_alias} ${target_configargs}"
1935
1936 FLAGS_FOR_TARGET=
1937 case " $target_configdirs " in
1938  *" newlib "*)
1939   case " $target_configargs " in
1940   *" --with-newlib "*)
1941    case "$target" in
1942    *-cygwin*)
1943      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' ;;
1944    esac
1945
1946    # If we're not building GCC, don't discard standard headers.
1947    if test -d ${srcdir}/gcc; then
1948      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
1949
1950      if test "${build}" != "${host}"; then
1951        # On Canadian crosses, CC_FOR_TARGET will have already been set
1952        # by `configure', so we won't have an opportunity to add -Bgcc/
1953        # to it.  This is right: we don't want to search that directory
1954        # for binaries, but we want the header files in there, so add
1955        # them explicitly.
1956        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include'
1957
1958        # Someone might think of using the pre-installed headers on
1959        # Canadian crosses, in case the installed compiler is not fully
1960        # compatible with the compiler being built.  In this case, it
1961        # would be better to flag an error than risking having
1962        # incompatible object files being constructed.  We can't
1963        # guarantee that an error will be flagged, but let's hope the
1964        # compiler will do it, when presented with incompatible header
1965        # files.
1966      fi
1967    fi
1968
1969    case "${target}-${is_cross_compiler}" in
1970    i[[3456789]]86-*-linux*-no)
1971       # Here host == target, so we don't need to build gcc,
1972       # so we don't want to discard standard headers.
1973       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
1974       ;;
1975    *)
1976       # If we're building newlib, use its generic headers last, but search
1977       # for any libc-related directories first (so make it the last -B
1978       # switch).
1979       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
1980       ;;
1981    esac
1982    ;;
1983   esac
1984   ;;
1985 esac
1986
1987 # Allow the user to override the flags for
1988 # our build compiler if desired.
1989 CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
1990
1991 # On Canadian crosses, we'll be searching the right directories for
1992 # the previously-installed cross compiler, so don't bother to add
1993 # flags for directories within the install tree of the compiler
1994 # being built; programs in there won't even run.
1995 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
1996   # Search for pre-installed headers if nothing else fits.
1997   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
1998 fi
1999
2000 if test "x${use_gnu_ld}" = x &&
2001    echo " ${configdirs} " | grep " ld " > /dev/null ; then
2002   # Arrange for us to find uninstalled linker scripts.
2003   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
2004 fi
2005
2006 if test "x${CC_FOR_TARGET+set}" = xset; then
2007   :
2008 elif test -d ${srcdir}/gcc; then
2009   CC_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/'
2010 elif test "$host" = "$target"; then
2011   CC_FOR_TARGET='$(CC)'
2012 else
2013   CC_FOR_TARGET=`echo gcc | sed "${program_transform_name}"`
2014 fi
2015 CC_FOR_TARGET=$CC_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2016
2017 if test "x${GCJ_FOR_TARGET+set}" = xset; then
2018   :
2019 elif test -d ${srcdir}/gcc; then
2020   GCJ_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/'
2021 elif test "$host" = "$target"; then
2022   GCJ_FOR_TARGET='gcj'
2023 else
2024   GCJ_FOR_TARGET=`echo gcj | sed "${program_transform_name}"`
2025 fi
2026 GCJ_FOR_TARGET=$GCJ_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2027
2028 if test "x${GFORTRAN_FOR_TARGET+set}" = xset; then
2029   :
2030 elif test -d ${srcdir}/gcc; then
2031   GFORTRAN_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/'
2032 elif test "$host" = "$target"; then
2033   GFORTRAN_FOR_TARGET='gfortran'
2034 else
2035   GFORTRAN_FOR_TARGET=`echo gfortran | sed "${program_transform_name}"`
2036 fi
2037 case $GFORTRAN_FOR_TARGET in
2038 *' $(FLAGS_FOR_TARGET)') ;;
2039 *) GFORTRAN_FOR_TARGET=$GFORTRAN_FOR_TARGET' $(FLAGS_FOR_TARGET)' ;;
2040 esac
2041
2042 # Don't use libstdc++-v3's flags to configure/build itself.
2043 libstdcxx_flags='`test ! -f $$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs'
2044 raw_libstdcxx_flags='-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs'
2045
2046 if test "x${CXX_FOR_TARGET+set}" = xset; then
2047   if test "x${RAW_CXX_FOR_TARGET+set}" != xset; then
2048     RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2049   fi
2050 elif test -d ${srcdir}/gcc; then
2051   # We add -shared-libgcc to CXX_FOR_TARGET whenever we use xgcc instead
2052   # of g++ for linking C++ or Java, because g++ has -shared-libgcc by
2053   # default whereas gcc does not.
2054   # RAW_CXX_FOR_TARGET is for linking C++ or java; CXX_FOR_TARGET is for
2055   # all other cases.
2056   CXX_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/g++ -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ '$libstdcxx_flags
2057   RAW_CXX_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ '$raw_libstdcxx_flags
2058 elif test "$host" = "$target"; then
2059   CXX_FOR_TARGET='$(CXX)'
2060   RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2061 else
2062   CXX_FOR_TARGET=`echo c++ | sed "${program_transform_name}"`
2063   RAW_CXX_FOR_TARGET=${CXX_FOR_TARGET}
2064 fi
2065 CXX_FOR_TARGET=$CXX_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2066 RAW_CXX_FOR_TARGET=$RAW_CXX_FOR_TARGET' $(FLAGS_FOR_TARGET)'
2067
2068 qCXX_FOR_TARGET=`echo "$CXX_FOR_TARGET" | sed 's,[[&%]],\\\&,g'`
2069 qRAW_CXX_FOR_TARGET=`echo "$RAW_CXX_FOR_TARGET" | sed 's,[[&%]],\\\&,g'`
2070
2071 # We want to defer the evaluation of `cmd`s and shell variables in
2072 # CXX_FOR_TARGET when recursing in the top-level Makefile, such as for
2073 # bootstrap.  We'll enclose CXX_FOR_TARGET_FOR_RECURSIVE_MAKE in single
2074 # quotes, but we still have to duplicate `$'s so that shell variables
2075 # can be expanded by the nested make as shell variables, not as make
2076 # macros.
2077 qqCXX_FOR_TARGET=`echo "$qCXX_FOR_TARGET" | sed -e 's,[[$]][[$]],$$$$,g'`
2078 qqRAW_CXX_FOR_TARGET=`echo "$qRAW_CXX_FOR_TARGET" | sed -e 's,[[$]][[$]],$$$$,g'`
2079
2080 # Wrap CC_FOR_TARGET and friends, for certain types of builds.
2081 CC_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${CC_FOR_TARGET}"
2082 GCJ_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${GCJ_FOR_TARGET}"
2083 GFORTRAN_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${GFORTRAN_FOR_TARGET}"
2084 CXX_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${qCXX_FOR_TARGET}"
2085 RAW_CXX_FOR_TARGET="\$(STAGE_CC_WRAPPER) ${qRAW_CXX_FOR_TARGET}"
2086 CXX_FOR_TARGET_FOR_RECURSIVE_MAKE="\$(STAGE_CC_WRAPPER) ${qqCXX_FOR_TARGET}"
2087 RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE="\$(STAGE_CC_WRAPPER) ${qqRAW_CXX_FOR_TARGET}"
2088
2089 # Makefile fragments.
2090 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
2091 do
2092   eval fragval=\$$frag
2093   if test $fragval != /dev/null; then
2094     eval $frag=${srcdir}/$fragval
2095   fi
2096 done
2097 AC_SUBST_FILE(host_makefile_frag)
2098 AC_SUBST_FILE(target_makefile_frag)
2099 AC_SUBST_FILE(alphaieee_frag)
2100 AC_SUBST_FILE(ospace_frag)
2101
2102 # Miscellanea: directories, flags, etc.
2103 AC_SUBST(RPATH_ENVVAR)
2104 AC_SUBST(BUILD_PREFIX)
2105 AC_SUBST(BUILD_PREFIX_1)
2106 AC_SUBST(tooldir)
2107 AC_SUBST(build_tooldir)
2108 AC_SUBST(GDB_TK)
2109
2110 # Build module lists & subconfigure args.
2111 AC_SUBST(build_configargs)
2112 AC_SUBST(build_configdirs)
2113
2114 # Host module lists & subconfigure args.
2115 AC_SUBST(host_configargs)
2116 AC_SUBST(configdirs)
2117
2118 # Target module lists & subconfigure args.
2119 AC_SUBST(target_configargs)
2120 AC_SUBST(target_configdirs)
2121
2122 # Build tools.
2123 AC_SUBST(CC_FOR_BUILD)
2124 AC_SUBST(config_shell)
2125
2126 # Host tools.
2127 NCN_STRICT_CHECK_TOOL(AR, ar)
2128 NCN_STRICT_CHECK_TOOL(AS, as)
2129 NCN_STRICT_CHECK_TOOL(DLLTOOL, dlltool)
2130 NCN_STRICT_CHECK_TOOL(LD, ld)
2131 NCN_STRICT_CHECK_TOOL(NM, nm)
2132 NCN_STRICT_CHECK_TOOL(RANLIB, ranlib, :)
2133 NCN_STRICT_CHECK_TOOL(WINDRES, windres)
2134 NCN_STRICT_CHECK_TOOL(OBJCOPY, objcopy)
2135 NCN_STRICT_CHECK_TOOL(OBJDUMP, objdump)
2136 AC_SUBST(CC)
2137 AC_SUBST(CXX)
2138 AC_SUBST(CFLAGS)
2139 AC_SUBST(CFLAGS_FOR_BUILD)
2140 AC_SUBST(CXXFLAGS)
2141
2142 # Target tools.
2143 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_AR_FOR_TARGET, ar)
2144 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_AS_FOR_TARGET, as)
2145 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_DLLTOOL_FOR_TARGET, dlltool)
2146 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_LD_FOR_TARGET, ld)
2147 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_NM_FOR_TARGET, nm)
2148 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_RANLIB_FOR_TARGET, ranlib, :)
2149 NCN_STRICT_CHECK_TARGET_TOOL(CONFIGURED_WINDRES_FOR_TARGET, windres)
2150
2151 AC_SUBST(GCC_FOR_TARGET)
2152 AC_SUBST(FLAGS_FOR_TARGET)
2153 AC_SUBST(CC_FOR_TARGET)
2154 AC_SUBST(GCJ_FOR_TARGET)
2155 AC_SUBST(GFORTRAN_FOR_TARGET)
2156 AC_SUBST(CXX_FOR_TARGET)
2157 AC_SUBST(RAW_CXX_FOR_TARGET)
2158 AC_SUBST(CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)
2159 AC_SUBST(RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)
2160
2161 # Fix up target tools.
2162 if test "x${build}" = "x${host}" ; then
2163   # In this case, the newly built tools can and should be used,
2164   # so we override the results of the autoconf tests.
2165   # This should really only happen when the tools are actually being built,
2166   # but that's a further refinement.  The new build scheme, where
2167   # tools are built into a structure paralleling where they're installed,
2168   # should also eliminate all of this cleanly.
2169   AR_FOR_TARGET="\$(USUAL_AR_FOR_TARGET)"
2170   AS_FOR_TARGET="\$(USUAL_AS_FOR_TARGET)"
2171   DLLTOOL_FOR_TARGET="\$(USUAL_DLLTOOL_FOR_TARGET)"
2172   LD_FOR_TARGET="\$(USUAL_LD_FOR_TARGET)"
2173   NM_FOR_TARGET="\$(USUAL_NM_FOR_TARGET)"
2174   RANLIB_FOR_TARGET="\$(USUAL_RANLIB_FOR_TARGET)"
2175   WINDRES_FOR_TARGET="\$(USUAL_WINDRES_FOR_TARGET)"
2176 else
2177   # Just use the ones we found.
2178   AR_FOR_TARGET="\$(CONFIGURED_AR_FOR_TARGET)"
2179   AS_FOR_TARGET="\$(CONFIGURED_AS_FOR_TARGET)"
2180   DLLTOOL_FOR_TARGET="\$(CONFIGURED_DLLTOOL_FOR_TARGET)"
2181   LD_FOR_TARGET="\$(CONFIGURED_LD_FOR_TARGET)"
2182   NM_FOR_TARGET="\$(CONFIGURED_NM_FOR_TARGET)"
2183   RANLIB_FOR_TARGET="\$(CONFIGURED_RANLIB_FOR_TARGET)"
2184   WINDRES_FOR_TARGET="\$(CONFIGURED_WINDRES_FOR_TARGET)"
2185 fi
2186 AC_SUBST(AR_FOR_TARGET)
2187 AC_SUBST(AS_FOR_TARGET)
2188 AC_SUBST(DLLTOOL_FOR_TARGET)
2189 AC_SUBST(LD_FOR_TARGET)
2190 AC_SUBST(NM_FOR_TARGET)
2191 AC_SUBST(RANLIB_FOR_TARGET)
2192 AC_SUBST(WINDRES_FOR_TARGET)
2193
2194 # Certain tools may need extra flags.
2195 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
2196 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
2197 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
2198
2199 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2200 AC_ARG_ENABLE(maintainer-mode,
2201 [  --enable-maintainer-mode enable make rules and dependencies not useful
2202                           (and sometimes confusing) to the casual installer],
2203       USE_MAINTAINER_MODE=$enableval,
2204       USE_MAINTAINER_MODE=no)
2205 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2206 AC_SUBST(MAINTAINER_MODE_TRUE)
2207 AC_SUBST(MAINTAINER_MODE_FALSE)
2208 if test "$USE_MAINTAINER_MODE" = yes; then
2209   MAINTAINER_MODE_TRUE=
2210   MAINTAINER_MODE_FALSE='#'
2211 else
2212   MAINTAINER_MODE_TRUE='#'
2213   MAINTAINER_MODE_FALSE=
2214 fi
2215 MAINT=$MAINTAINER_MODE_TRUE
2216 AC_SUBST(MAINT)dnl
2217
2218 # ---------------------
2219 # GCC bootstrap support
2220 # ---------------------
2221
2222 # Stage specific cflags for build.
2223 stage1_cflags="-g"
2224 case $build in
2225   vax-*-*)
2226     case ${GCC} in
2227       yes) stage1_cflags="-g -Wa,-J" ;;
2228       *) stage1_cflags="-g -J" ;;
2229     esac ;;
2230   powerpc-*-darwin*)
2231     # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
2232     # sources; use -no-cpp-precomp to get to GNU cpp.
2233     # Apple's GCC has bugs in designated initializer handling, so disable
2234     # that too.
2235     stage1_cflags="-g -no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
2236     ;;
2237 esac
2238 AC_SUBST(stage1_cflags)
2239
2240 # It makes debugging easier if we create as symlinks the stage directories
2241 # gcc for stageN-gcc and stagePREV-gcc for stage(N-1).  In case this is not
2242 # possible, however, we can resort to mv.
2243 AC_CACHE_CHECK([if symbolic links between directories work],
2244 [gcc_cv_prog_ln_s_dir],
2245 [if test "${LN_S}" = "ln -s" \
2246    && mkdir confdir.s1 \
2247    && ln -s confdir.s1 confdir.s2 \
2248    && echo timestamp1 > confdir.s1/conftest.1 \
2249    && cmp confdir.s1/conftest.1 confdir.s2/conftest.1 \
2250    && echo timestamp2 > confdir.s2/conftest.2 \
2251    && cmp confdir.s1/conftest.2 confdir.s1/conftest.2 \
2252    && rm -f confdir.s2; then
2253   gcc_cv_prog_ln_s_dir=yes
2254 else
2255   gcc_cv_prog_ln_s_dir=no
2256 fi
2257 rm -rf confdir.s1 confdir.s2])
2258
2259 case ${gcc_cv_prog_ln_s_dir} in
2260   yes)
2261     CREATE_LINK_TO_DIR='ln -s $$1 $$2'
2262     UNDO_LINK_TO_DIR='rm -f $$1' ;;
2263   *)
2264     CREATE_LINK_TO_DIR='mv $$1 $$2'
2265     UNDO_LINK_TO_DIR='mv $$1 $$2' ;;
2266 esac
2267 AC_SUBST(CREATE_LINK_TO_DIR)
2268 AC_SUBST(UNDO_LINK_TO_DIR)
2269
2270 # Enable -Werror in bootstrap stage2 and later.
2271 # Change the default to "no" on release branches.
2272 AC_ARG_ENABLE(werror,
2273 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
2274 [enable_werror=yes])
2275 case ${enable_werror} in
2276   yes) stage2_werror_flag="--enable-werror-always" ;;
2277   *) stage2_werror_flag="" ;;
2278 esac
2279 AC_SUBST(stage2_werror_flag)
2280
2281 AC_OUTPUT(Makefile)