configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32 m4_include([config/cloog.m4])
  33
  34 AC_INIT(move-if-change)
  35 AC_PREREQ(2.64)
  36 AC_DISABLE_OPTION_CHECKING
  37
  38 progname=$0
  39 # if PWD already has a value, it is probably wrong.
  40 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  41
  42 # Export original configure arguments for use by sub-configures.
  43 # Quote arguments with shell meta charatcers.
  44 TOPLEVEL_CONFIGURE_ARGUMENTS=
  45 set -- "$progname" "$@"
  46 for ac_arg
  47 do
  48   case "$ac_arg" in
  49   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  50     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  51     # if the argument is of the form -foo=baz, quote the baz part only
  52     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  53   *) ;;
  54   esac
  55   # Add the quoted argument to the list.
  56   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  57 done
  58 if test "$silent" = yes; then
  59   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  60 fi
  61 # Remove the initial space we just introduced and, as these will be
  62 # expanded by make, quote '$'.
  63 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  64 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  65
  66 # Find the build, host, and target systems.
  67 ACX_NONCANONICAL_BUILD
  68 ACX_NONCANONICAL_HOST
  69 ACX_NONCANONICAL_TARGET
  70
  71 dnl Autoconf 2.5x and later will set a default program prefix if
  72 dnl --target was used, even if it was the same as --host.  Disable
  73 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  74 dnl to take effect.
  75 test "$host_noncanonical" = "$target_noncanonical" &&
  76   test "$program_prefix$program_suffix$program_transform_name" = \
  77     NONENONEs,x,x, &&
  78   program_transform_name=s,y,y,
  79
  80 AC_CANONICAL_SYSTEM
  81 AC_ARG_PROGRAM
  82
  83 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  84 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  85
  86 # Get 'install' or 'install-sh' and its variants.
  87 AC_PROG_INSTALL
  88 ACX_PROG_LN
  89 AC_PROG_LN_S
  90 AC_PROG_SED
  91 AC_PROG_AWK
  92
  93 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  94
  95 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  96 # a relative path.
  97 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  98   INSTALL="${srcpwd}/install-sh -c"
  99 fi
 100
 101 # Set srcdir to "." if that's what it is.
 102 # This is important for multilib support.
 103 pwd=`${PWDCMD-pwd}`
 104 if test "${pwd}" = "${srcpwd}" ; then
 105   srcdir=.
 106 fi
 107
 108 topsrcdir=$srcpwd
 109
 110 extra_host_args=
 111
 112 ### To add a new directory to the tree, first choose whether it is a target
 113 ### or a host dependent tool.  Then put it into the appropriate list
 114 ### (library or tools, host or target), doing a dependency sort.
 115
 116 # Subdirs will be configured in the order listed in build_configdirs,
 117 # configdirs, or target_configdirs; see the serialization section below.
 118
 119 # Dependency sorting is only needed when *configuration* must be done in
 120 # a particular order.  In all cases a dependency should be specified in
 121 # the Makefile, whether or not it's implicitly specified here.
 122
 123 # Double entries in build_configdirs, configdirs, or target_configdirs may
 124 # cause circular dependencies and break everything horribly.
 125
 126 # these library is used by various programs built for the build
 127 # environment
 128 #
 129 build_libs="build-libiberty"
 130
 131 # these tools are built for the build environment
 132 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 133
 134 # these libraries are used by various programs built for the host environment
 135 #
 136 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl cloog libelf libiconv"
 137
 138 # these tools are built for the host environment
 139 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 140 # know that we are building the simulator.
 141 # binutils, gas and ld appear in that order because it makes sense to run
 142 # "make check" in that particular order.
 143 # If --enable-gold is used, "gold" may replace "ld".
 144 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools"
 145
 146 # libgcj represents the runtime libraries only used by gcj.
 147 libgcj="target-libffi \
 148         target-zlib \
 149         target-libjava"
 150
 151 # these libraries are built for the target environment, and are built after
 152 # the host libraries and the host tools (which may be a cross compiler)
 153 # Note that libiberty is not a target library.
 154 target_libraries="target-libgcc \
 155                 target-libbacktrace \
 156                 target-libgloss \
 157                 target-newlib \
 158                 target-libgomp \
 159                 target-libatomic \
 160                 target-libitm \
 161                 target-libstdc++-v3 \
 162                 target-libmudflap \
 163                 target-libssp \
 164                 target-libquadmath \
 165                 target-libgfortran \
 166                 target-boehm-gc \
 167                 ${libgcj} \
 168                 target-libobjc \
 169                 target-libada \
 170                 target-libgo"
 171
 172 # these tools are built using the target libraries, and are intended to
 173 # run only in the target environment
 174 #
 175 # note: any program that *uses* libraries that are in the "target_libraries"
 176 # list belongs in this list.
 177 #
 178 target_tools="target-rda"
 179
 180 ################################################################################
 181
 182 ## All tools belong in one of the four categories, and are assigned above
 183 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 184 ## is important because configure will choke if they ever get through.
 185 ## ${configdirs} is directories we build using the host tools.
 186 ## ${target_configdirs} is directories we build using the target tools.
 187 configdirs=`echo ${host_libs} ${host_tools}`
 188 target_configdirs=`echo ${target_libraries} ${target_tools}`
 189 build_configdirs=`echo ${build_libs} ${build_tools}`
 190
 191 m4_divert_text([PARSE_ARGS],
 192 [case $srcdir in
 193   *" "*)
 194 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 195     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 196 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 197     ;;
 198 esac
 199 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 200 ])
 201
 202 ################################################################################
 203
 204 srcname="gnu development package"
 205
 206 # This gets set non-empty for some net releases of packages.
 207 appdirs=""
 208
 209 # Define is_cross_compiler to save on calls to 'test'.
 210 is_cross_compiler=
 211 if test x"${host}" = x"${target}" ; then
 212   is_cross_compiler=no
 213 else
 214   is_cross_compiler=yes
 215 fi
 216
 217 # Find the build and target subdir names.
 218 GCC_TOPLEV_SUBDIRS
 219 # Be sure to cover against remnants of an in-tree build.
 220 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 221   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 222 Use a pristine source tree when building in a separate tree])
 223 fi
 224
 225 # Skipdirs are removed silently.
 226 skipdirs=
 227 # Noconfigdirs are removed loudly.
 228 noconfigdirs=""
 229
 230 use_gnu_ld=
 231 # Make sure we don't let GNU ld be added if we didn't want it.
 232 if test x$with_gnu_ld = xno ; then
 233   use_gnu_ld=no
 234   noconfigdirs="$noconfigdirs ld gold"
 235 fi
 236
 237 use_gnu_as=
 238 # Make sure we don't let GNU as be added if we didn't want it.
 239 if test x$with_gnu_as = xno ; then
 240   use_gnu_as=no
 241   noconfigdirs="$noconfigdirs gas"
 242 fi
 243
 244 use_included_zlib=
 245 # Make sure we don't let ZLIB be added if we didn't want it.
 246 if test x$with_system_zlib = xyes ; then
 247   use_included_zlib=no
 248   noconfigdirs="$noconfigdirs zlib"
 249 fi
 250
 251 # some tools are so dependent upon X11 that if we're not building with X,
 252 # it's not even worth trying to configure, much less build, that tool.
 253
 254 case ${with_x} in
 255   yes | "") ;; # the default value for this tree is that X11 is available
 256   no)
 257     skipdirs="${skipdirs} tk itcl libgui"
 258     # We won't be able to build gdbtk without X.
 259     enable_gdbtk=no
 260     ;;
 261   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 262 esac
 263
 264 # Some are only suitable for cross toolchains.
 265 # Remove these if host=target.
 266 cross_only="target-libgloss target-newlib target-opcodes"
 267
 268 case $is_cross_compiler in
 269   no) skipdirs="${skipdirs} ${cross_only}" ;;
 270 esac
 271
 272 # If both --with-headers and --with-libs are specified, default to
 273 # --without-newlib.
 274 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 275    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 276   if test x"${with_newlib}" = x ; then
 277     with_newlib=no
 278   fi
 279 fi
 280
 281 # Recognize --with-newlib/--without-newlib.
 282 case ${with_newlib} in
 283   no) skipdirs="${skipdirs} target-newlib" ;;
 284   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 285 esac
 286
 287 # Handle --enable-gold, --enable-ld.
 288 # --disable-gold [--enable-ld]
 289 #     Build only ld.  Default option.
 290 # --enable-gold [--enable-ld]
 291 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 292 #     as "ld.bfd" and "ld".
 293 # --enable-gold=default [--enable-ld]
 294 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 295 #     install ld as "ld.bfd".
 296 # --enable-gold[=default] --disable-ld
 297 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 298 # --enable-gold --enable-ld=default
 299 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 300 #     and ld.bfd).
 301 #     In other words, ld is default
 302 # --enable-gold=default --enable-ld=default
 303 #     Error.
 304
 305 default_ld=
 306 AC_ARG_ENABLE(gold,
 307 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 308                 [build gold @<:@ARG={default,yes,no}@:>@])],
 309 ENABLE_GOLD=$enableval,
 310 ENABLE_GOLD=no)
 311 case "${ENABLE_GOLD}" in
 312   yes|default)
 313     # Check for ELF target.
 314     is_elf=no
 315     case "${target}" in
 316       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 317       | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 318       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 319       | *-*-solaris2* | *-*-nto*)
 320         case "${target}" in
 321           *-*-linux*aout* | *-*-linux*oldld*)
 322             ;;
 323           *)
 324             is_elf=yes
 325             ;;
 326         esac
 327     esac
 328
 329     if test "$is_elf" = "yes"; then
 330       # Check for target supported by gold.
 331       case "${target}" in
 332         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* | tilegx*-*-*)
 333           configdirs="$configdirs gold"
 334           if test x${ENABLE_GOLD} = xdefault; then
 335             default_ld=gold
 336           fi
 337           ENABLE_GOLD=yes
 338           ;;
 339       esac
 340     fi
 341     ;;
 342   no)
 343     ;;
 344   *)
 345     AC_MSG_ERROR([invalid --enable-gold argument])
 346     ;;
 347 esac
 348
 349 AC_ARG_ENABLE(ld,
 350 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 351                 [build ld @<:@ARG={default,yes,no}@:>@])],
 352 ENABLE_LD=$enableval,
 353 ENABLE_LD=yes)
 354
 355 case "${ENABLE_LD}" in
 356   default)
 357     if test x${default_ld} != x; then
 358       AC_MSG_ERROR([either gold or ld can be the default ld])
 359     fi
 360     ;;
 361   yes)
 362     ;;
 363   no)
 364     if test x${ENABLE_GOLD} != xyes; then
 365       AC_MSG_WARN([neither ld nor gold are enabled])
 366     fi
 367     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 368     ;;
 369   *)
 370     AC_MSG_ERROR([invalid --enable-ld argument])
 371     ;;
 372 esac
 373
 374 # Configure extra directories which are host specific
 375
 376 case "${host}" in
 377   *-cygwin*)
 378     configdirs="$configdirs libtermcap" ;;
 379 esac
 380
 381 # A target can indicate whether a language isn't supported for some reason.
 382 # Only spaces may be used in this macro; not newlines or tabs.
 383 unsupported_languages=
 384
 385 # Remove more programs from consideration, based on the host or
 386 # target this usually means that a port of the program doesn't
 387 # exist yet.
 388
 389 case "${host}" in
 390   i[[3456789]]86-*-msdosdjgpp*)
 391     noconfigdirs="$noconfigdirs tcl tk itcl"
 392     ;;
 393 esac
 394
 395
 396 AC_ARG_ENABLE(libquadmath,
 397 AS_HELP_STRING([--disable-libquadmath],
 398   [do not build libquadmath directory]),
 399 ENABLE_LIBQUADMATH=$enableval,
 400 ENABLE_LIBQUADMATH=yes)
 401 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 402   noconfigdirs="$noconfigdirs target-libquadmath"
 403 fi
 404
 405
 406 AC_ARG_ENABLE(libquadmath-support,
 407 AS_HELP_STRING([--disable-libquadmath-support],
 408   [disable libquadmath support for Fortran]),
 409 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 410 ENABLE_LIBQUADMATH_SUPPORT=yes)
 411 enable_libquadmath_support=
 412 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 413   enable_libquadmath_support=no
 414 fi
 415
 416
 417 AC_ARG_ENABLE(libada,
 418 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 419 ENABLE_LIBADA=$enableval,
 420 ENABLE_LIBADA=yes)
 421 if test "${ENABLE_LIBADA}" != "yes" ; then
 422   noconfigdirs="$noconfigdirs gnattools"
 423 fi
 424
 425 AC_ARG_ENABLE(libssp,
 426 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 427 ENABLE_LIBSSP=$enableval,
 428 ENABLE_LIBSSP=yes)
 429
 430 # Save it here so that, even in case of --enable-libgcj, if the Java
 431 # front-end isn't enabled, we still get libgcj disabled.
 432 libgcj_saved=$libgcj
 433 case $enable_libgcj in
 434 yes)
 435   # If we reset it here, it won't get added to noconfigdirs in the
 436   # target-specific build rules, so it will be forcibly enabled
 437   # (unless the Java language itself isn't enabled).
 438   libgcj=
 439   ;;
 440 no)
 441   # Make sure we get it printed in the list of not supported target libs.
 442   # Don't disable libffi, though, other languages use it.
 443   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 444   # Clear libgcj_saved so that even if java is enabled libffi won't be
 445   # built.
 446   libgcj_saved=
 447   ;;
 448 esac
 449
 450 AC_ARG_ENABLE(static-libjava,
 451 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 452                 [build static libjava @<:@default=no@:>@])],
 453 ENABLE_STATIC_LIBJAVA=$enableval,
 454 ENABLE_STATIC_LIBJAVA=no)
 455 enable_static_libjava=
 456 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 457   enable_static_libjava=yes
 458 fi
 459
 460 if test x$enable_static_libjava != xyes ; then
 461   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 462 fi
 463 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 464
 465 # Disable libmudflap on some systems.
 466 if test x$enable_libmudflap = x ; then
 467     case "${target}" in
 468     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux* | *-*-kopensolaris*-gnu)
 469         # Enable libmudflap by default in GNU and friends.
 470         ;;
 471     *-*-freebsd*)
 472         # Enable libmudflap by default in FreeBSD.
 473         ;;
 474     *)
 475         # Disable it by default everywhere else.
 476         noconfigdirs="$noconfigdirs target-libmudflap"
 477         ;;
 478     esac
 479 fi
 480
 481 # Disable libgomp on non POSIX hosted systems.
 482 if test x$enable_libgomp = x ; then
 483     # Enable libgomp by default on hosted POSIX systems.
 484     case "${target}" in
 485     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 486         ;;
 487     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 488         ;;
 489     *-*-solaris2* | *-*-hpux11*)
 490         ;;
 491     *-*-darwin* | *-*-aix*)
 492         ;;
 493     *)
 494         noconfigdirs="$noconfigdirs target-libgomp"
 495         ;;
 496     esac
 497 fi
 498
 499 # Disable libatomic on unsupported systems.
 500 if test -d ${srcdir}/libatomic; then
 501     if test x$enable_libatomic = x; then
 502         AC_MSG_CHECKING([for libatomic support])
 503         if (srcdir=${srcdir}/libatomic; \
 504                 . ${srcdir}/configure.tgt; \
 505                 test -n "$UNSUPPORTED")
 506         then
 507             AC_MSG_RESULT([no])
 508             noconfigdirs="$noconfigdirs target-libatomic"
 509         else
 510             AC_MSG_RESULT([yes])
 511         fi
 512     fi
 513 fi
 514
 515 # Disable libitm on unsupported systems.
 516 if test -d ${srcdir}/libitm; then
 517     if test x$enable_libitm = x; then
 518         AC_MSG_CHECKING([for libitm support])
 519         if (srcdir=${srcdir}/libitm; \
 520                 . ${srcdir}/configure.tgt; \
 521                 test -n "$UNSUPPORTED")
 522         then
 523             AC_MSG_RESULT([no])
 524             noconfigdirs="$noconfigdirs target-libitm"
 525         else
 526             AC_MSG_RESULT([yes])
 527         fi
 528     fi
 529 fi
 530
 531 # Disable libquadmath for some systems.
 532 case "${target}" in
 533   # libquadmath is unused on AIX and libquadmath build process use of
 534   # LD_LIBRARY_PATH can break AIX bootstrap.
 535   powerpc-*-aix* | rs6000-*-aix*)
 536     noconfigdirs="$noconfigdirs target-libquadmath"
 537     ;;
 538 esac
 539
 540 # Disable libssp for some systems.
 541 case "${target}" in
 542   avr-*-*)
 543     # No hosted I/O support.
 544     noconfigdirs="$noconfigdirs target-libssp"
 545     ;;
 546   powerpc-*-aix* | rs6000-*-aix*)
 547     noconfigdirs="$noconfigdirs target-libssp"
 548     ;;
 549   rl78-*-*)
 550     # libssp uses a misaligned load to trigger a fault, but the RL78
 551     # doesn't fault for those - instead, it gives a build-time error
 552     # for explicit misaligned loads.
 553     noconfigdirs="$noconfigdirs target-libssp"
 554     ;;
 555 esac
 556
 557 # Disable libstdc++-v3 for some systems.
 558 case "${target}" in
 559   *-*-vxworks*)
 560     # VxWorks uses the Dinkumware C++ library.
 561     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 562     ;;
 563   arm*-wince-pe*)
 564     # the C++ libraries don't build on top of CE's C libraries
 565     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 566     ;;
 567   avr-*-*)
 568     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 569     ;;
 570 esac
 571
 572 # Disable Fortran for some systems.
 573 case "${target}" in
 574   mmix-*-*)
 575     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 576     unsupported_languages="$unsupported_languages fortran"
 577     ;;
 578 esac
 579
 580 # Disable Java if libffi is not supported.
 581 case "${target}" in
 582   alpha*-*-*)
 583     ;;
 584   arm*-*-*)
 585     ;;
 586   cris-*-*)
 587     ;;
 588   frv-*-*)
 589     ;;
 590   hppa*-*-linux*)
 591     ;;
 592   hppa*-*-hpux*)
 593     ;;
 594   i?86-*-*)
 595     ;;
 596   ia64*-*-*)
 597     ;;
 598   m32r*-*-*)
 599     ;;
 600   m68k-*-*)
 601     ;;
 602   mips*-*-rtems*)
 603     ;;
 604   mips*-*-linux*)
 605     ;;
 606   powerpc*-*-linux*)
 607     ;;
 608   powerpc-*-darwin*)
 609     ;;
 610   powerpc-*-aix* | rs6000-*-aix*)
 611     ;;
 612   powerpc-*-freebsd*)
 613     ;;
 614   powerpc64-*-freebsd*)
 615     ;;
 616   powerpc*-*-rtems*)
 617     ;;
 618   s390-*-* | s390x-*-*)
 619     ;;
 620   sh-*-* | sh[[34]]*-*-*)
 621     ;;
 622   sh64-*-* | sh5*-*-*)
 623     ;;
 624   sparc*-*-*)
 625     ;;
 626   x86_64-*-*)
 627     ;;
 628   *-*-*)
 629     unsupported_languages="$unsupported_languages java"
 630     ;;
 631 esac
 632
 633 # Disable Java, libgcj or related libraries for some systems.
 634 case "${target}" in
 635   powerpc-*-darwin*)
 636     ;;
 637   i[[3456789]]86-*-darwin*)
 638     ;;
 639   x86_64-*-darwin[[912]]*)
 640     ;;
 641   *-*-darwin*)
 642     noconfigdirs="$noconfigdirs ${libgcj}"
 643     ;;
 644   *-*-netware*)
 645     noconfigdirs="$noconfigdirs ${libgcj}"
 646     ;;
 647   *-*-rtems*)
 648     noconfigdirs="$noconfigdirs ${libgcj}"
 649     ;;
 650   *-*-tpf*)
 651     noconfigdirs="$noconfigdirs ${libgcj}"
 652     ;;
 653   *-*-uclinux*)
 654     noconfigdirs="$noconfigdirs ${libgcj}"
 655     ;;
 656   *-*-vxworks*)
 657     noconfigdirs="$noconfigdirs ${libgcj}"
 658     ;;
 659   alpha*-*-*vms*)
 660     noconfigdirs="$noconfigdirs ${libgcj}"
 661     ;;
 662   arm-wince-pe)
 663     noconfigdirs="$noconfigdirs ${libgcj}"
 664     ;;
 665   arm*-*-symbianelf*)
 666     noconfigdirs="$noconfigdirs ${libgcj}"
 667     ;;
 668   bfin-*-*)
 669     noconfigdirs="$noconfigdirs target-boehm-gc"
 670     ;;
 671   cris-*-* | crisv32-*-*)
 672     unsupported_languages="$unsupported_languages java"
 673     case "${target}" in
 674       *-*-linux*)
 675         ;;
 676       *) # See PR46792 regarding target-libffi.
 677         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 678     esac
 679     ;;
 680   hppa*64*-*-linux*)
 681     # In this case, it's because the hppa64-linux target is for
 682     # the kernel only at this point and has no libc, and thus no
 683     # headers, crt*.o, etc., all of which are needed by these.
 684     unsupported_languages="$unsupported_languages java"
 685     ;;
 686   hppa*64*-*-hpux*)
 687     noconfigdirs="$noconfigdirs ${libgcj}"
 688     ;;
 689   hppa*-hp-hpux11*)
 690     ;;
 691   hppa*-*-hpux*)
 692     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 693     # build on HP-UX 10.20.
 694     noconfigdirs="$noconfigdirs ${libgcj}"
 695     ;;
 696   ia64*-*-*vms*)
 697     noconfigdirs="$noconfigdirs ${libgcj}"
 698     ;;
 699   i[[3456789]]86-w64-mingw*)
 700     noconfigdirs="$noconfigdirs ${libgcj}"
 701     ;;
 702   i[[3456789]]86-*-mingw*)
 703     noconfigdirs="$noconfigdirs ${libgcj}"
 704     ;;
 705   x86_64-*-mingw*)
 706     noconfigdirs="$noconfigdirs ${libgcj}"
 707     ;;
 708   mmix-*-*)
 709     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 710     ;;
 711   powerpc-*-aix*)
 712     # copied from rs6000-*-* entry
 713     noconfigdirs="$noconfigdirs ${libgcj}"
 714     ;;
 715   rs6000-*-aix*)
 716     noconfigdirs="$noconfigdirs ${libgcj}"
 717     ;;
 718   *-*-lynxos*)
 719     noconfigdirs="$noconfigdirs ${libgcj}"
 720     ;;
 721 esac
 722
 723 # Default libgloss CPU subdirectory.
 724 libgloss_dir="$target_cpu"
 725
 726 case "${target}" in
 727   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 728     libgloss_dir=wince
 729     ;;
 730   arm*-*-*)
 731     libgloss_dir=arm
 732     ;;
 733   cris-*-* | crisv32-*-*)
 734     libgloss_dir=cris
 735     ;;
 736   hppa*-*-*)
 737     libgloss_dir=pa
 738     ;;
 739   i[[3456789]]86-*-*)
 740     libgloss_dir=i386
 741     ;;
 742   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 743     libgloss_dir=m68hc11
 744     ;;
 745   m68*-*-* | fido-*-*)
 746     libgloss_dir=m68k
 747     ;;
 748   mips*-*-*)
 749     libgloss_dir=mips
 750     ;;
 751   powerpc*-*-*)
 752     libgloss_dir=rs6000
 753     ;;
 754   sparc*-*-*)
 755     libgloss_dir=sparc
 756     ;;
 757 esac
 758
 759 # Disable newlib and libgloss for various target OSes.
 760 case "${target}" in
 761   alpha*-dec-osf*)
 762     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 763     ;;
 764   i[[3456789]]86-*-linux*)
 765     # This section makes it possible to build newlib natively on linux.
 766     # If we are using a cross compiler then don't configure newlib.
 767     if test x${is_cross_compiler} != xno ; then
 768       noconfigdirs="$noconfigdirs target-newlib"
 769     fi
 770     noconfigdirs="$noconfigdirs target-libgloss"
 771     # If we are not using a cross compiler, do configure newlib.
 772     # Note however, that newlib will only be configured in this situation
 773     # if the --with-newlib option has been given, because otherwise
 774     # 'target-newlib' will appear in skipdirs.
 775     ;;
 776   i[[3456789]]86-*-rdos*)
 777     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 778     ;;
 779   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 780     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 781     ;;
 782   sparc-*-sunos4*)
 783     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 784     ;;
 785   *-*-aix*)
 786     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 787     ;;
 788   *-*-beos*)
 789     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 790     ;;
 791   *-*-chorusos)
 792     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 793     ;;
 794   *-*-dragonfly*)
 795     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 796     ;;
 797   *-*-freebsd*)
 798     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 799     ;;
 800   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 801     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 802     ;;
 803   *-*-lynxos*)
 804     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 805     ;;
 806   *-*-mingw*)
 807     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 808     ;;
 809   *-*-netbsd*)
 810     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 811     ;;
 812   *-*-netware*)
 813     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 814     ;;
 815   *-*-tpf*)
 816     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 817     ;;
 818   *-*-uclinux*)
 819     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 820     ;;
 821   *-*-vxworks*)
 822     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 823     ;;
 824 esac
 825
 826 case "${target}" in
 827   *-*-chorusos)
 828     ;;
 829   powerpc-*-darwin*)
 830     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 831     noconfigdirs="$noconfigdirs sim target-rda"
 832     ;;
 833   i[[3456789]]86-*-darwin*)
 834     noconfigdirs="$noconfigdirs ld gprof"
 835     noconfigdirs="$noconfigdirs sim target-rda"
 836     ;;
 837   x86_64-*-darwin[[912]]*)
 838     noconfigdirs="$noconfigdirs ld gas gprof"
 839     noconfigdirs="$noconfigdirs sim target-rda"
 840     ;;
 841   *-*-darwin*)
 842     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 843     noconfigdirs="$noconfigdirs sim target-rda"
 844     ;;
 845   *-*-dragonfly*)
 846     ;;
 847   *-*-freebsd*)
 848     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 849         && test -f /usr/local/include/gmp.h; then
 850       with_gmp=/usr/local
 851     fi
 852     ;;
 853   *-*-kaos*)
 854     # Remove unsupported stuff on all kaOS configurations.
 855     noconfigdirs="$noconfigdirs target-libgloss"
 856     ;;
 857   *-*-netbsd*)
 858     ;;
 859   *-*-netware*)
 860     ;;
 861   *-*-rtems*)
 862     noconfigdirs="$noconfigdirs target-libgloss"
 863     ;;
 864     # The tpf target doesn't support gdb yet.
 865   *-*-tpf*)
 866     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 867     ;;
 868   *-*-uclinux*)
 869     noconfigdirs="$noconfigdirs target-rda"
 870     ;;
 871   *-*-vxworks*)
 872     ;;
 873   alpha*-dec-osf*)
 874     # ld works, but does not support shared libraries.
 875     # gas doesn't generate exception information.
 876     noconfigdirs="$noconfigdirs gas ld"
 877     ;;
 878   alpha*-*-*vms*)
 879     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 880     ;;
 881   alpha*-*-*)
 882     # newlib is not 64 bit ready
 883     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 884     ;;
 885   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 886     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 887     ;;
 888   arc-*-*)
 889     noconfigdirs="$noconfigdirs target-libgloss"
 890     ;;
 891   arm-*-pe*)
 892     noconfigdirs="$noconfigdirs target-libgloss"
 893     ;;
 894   arm-*-riscix*)
 895     noconfigdirs="$noconfigdirs ld target-libgloss"
 896     ;;
 897   c4x-*-* | tic4x-*-*)
 898     noconfigdirs="$noconfigdirs target-libgloss"
 899     ;;
 900   tic54x-*-*)
 901     noconfigdirs="$noconfigdirs target-libgloss gdb"
 902     ;;
 903   d10v-*-*)
 904     noconfigdirs="$noconfigdirs target-libgloss"
 905     ;;
 906   d30v-*-*)
 907     noconfigdirs="$noconfigdirs gdb"
 908     ;;
 909   fr30-*-elf*)
 910     noconfigdirs="$noconfigdirs gdb"
 911     ;;
 912   moxie-*-*)
 913     noconfigdirs="$noconfigdirs gprof"
 914     ;;
 915   h8300*-*-*)
 916     noconfigdirs="$noconfigdirs target-libgloss"
 917     ;;
 918   h8500-*-*)
 919     noconfigdirs="$noconfigdirs target-libgloss"
 920     ;;
 921   hppa1.1-*-osf* | hppa1.1-*-bsd* )
 922     ;;
 923   hppa*64*-*-linux*)
 924     ;;
 925   hppa*-*-linux*)
 926     ;;
 927   hppa*-*-*elf* | \
 928   hppa*-*-lites* | \
 929   hppa*-*-openbsd* | \
 930   hppa*64*-*-*)
 931     ;;
 932   hppa*-hp-hpux11*)
 933     noconfigdirs="$noconfigdirs ld"
 934     ;;
 935   hppa*-*-pro*)
 936     ;;
 937   hppa*-*-*)
 938     noconfigdirs="$noconfigdirs ld"
 939     ;;
 940   i960-*-*)
 941     noconfigdirs="$noconfigdirs gdb"
 942     ;;
 943   ia64*-*-elf*)
 944     # No gdb support yet.
 945     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
 946     ;;
 947   ia64*-**-hpux*)
 948     # No ld support yet.
 949     noconfigdirs="$noconfigdirs libgui itcl ld"
 950     ;;
 951   ia64*-*-*vms*)
 952     # No ld support yet.
 953     noconfigdirs="$noconfigdirs libgui itcl ld"
 954     ;;
 955   i[[3456789]]86-w64-mingw*)
 956     ;;
 957   i[[3456789]]86-*-mingw*)
 958     target_configdirs="$target_configdirs target-winsup"
 959     ;;
 960   *-*-cygwin*)
 961     target_configdirs="$target_configdirs target-libtermcap target-winsup"
 962     noconfigdirs="$noconfigdirs target-libgloss"
 963     # always build newlib if winsup directory is present.
 964     if test -d "$srcdir/winsup/cygwin"; then
 965       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 966     elif test -d "$srcdir/newlib"; then
 967       echo "Warning: winsup/cygwin is missing so newlib can't be built."
 968     fi
 969     ;;
 970   i[[3456789]]86-*-pe)
 971     noconfigdirs="$noconfigdirs target-libgloss"
 972     ;;
 973   i[[3456789]]86-*-sco3.2v5*)
 974     # The linker does not yet know about weak symbols in COFF,
 975     # and is not configured to handle mixed ELF and COFF.
 976     noconfigdirs="$noconfigdirs ld target-libgloss"
 977     ;;
 978   i[[3456789]]86-*-sco*)
 979     noconfigdirs="$noconfigdirs gprof target-libgloss"
 980     ;;
 981   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
 982     noconfigdirs="$noconfigdirs target-libgloss"
 983     ;;
 984   i[[3456789]]86-*-sysv4*)
 985     noconfigdirs="$noconfigdirs target-libgloss"
 986     ;;
 987   i[[3456789]]86-*-beos*)
 988     noconfigdirs="$noconfigdirs gdb"
 989     ;;
 990   i[[3456789]]86-*-rdos*)
 991     noconfigdirs="$noconfigdirs gdb"
 992     ;;
 993   mmix-*-*)
 994     noconfigdirs="$noconfigdirs gdb"
 995     ;;
 996   mt-*-*)
 997     noconfigdirs="$noconfigdirs sim"
 998     ;;
 999   powerpc-*-aix*)
1000     # copied from rs6000-*-* entry
1001     noconfigdirs="$noconfigdirs gprof"
1002     ;;
1003   powerpc*-*-winnt* | powerpc*-*-pe*)
1004     target_configdirs="$target_configdirs target-winsup"
1005     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1006     # always build newlib.
1007     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1008     ;;
1009     # This is temporary until we can link against shared libraries
1010   powerpcle-*-solaris*)
1011     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1012     ;;
1013   powerpc-*-beos*)
1014     noconfigdirs="$noconfigdirs gdb"
1015     ;;
1016   rs6000-*-lynxos*)
1017     noconfigdirs="$noconfigdirs gprof"
1018     ;;
1019   rs6000-*-aix*)
1020     noconfigdirs="$noconfigdirs gprof"
1021     ;;
1022   rs6000-*-*)
1023     noconfigdirs="$noconfigdirs gprof"
1024     ;;
1025   m68k-apollo-*)
1026     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1027     ;;
1028   microblaze*)
1029     noconfigdirs="$noconfigdirs gprof"
1030     ;;
1031   mips*-sde-elf* | mips*-mti-elf*)
1032     if test x$with_newlib = xyes; then
1033       noconfigdirs="$noconfigdirs gprof"
1034     fi
1035     ;;
1036   mips*-*-irix5*)
1037     noconfigdirs="$noconfigdirs gprof target-libgloss"
1038     ;;
1039   mips*-*-irix6*)
1040     noconfigdirs="$noconfigdirs gprof target-libgloss"
1041     ;;
1042   mips*-*-bsd*)
1043     noconfigdirs="$noconfigdirs gprof target-libgloss"
1044     ;;
1045   mips*-*-linux*)
1046     ;;
1047   mips*-*-*)
1048     noconfigdirs="$noconfigdirs gprof"
1049     ;;
1050   sh-*-* | sh64-*-*)
1051     case "${target}" in
1052       sh*-*-elf)
1053          ;;
1054       *)
1055          noconfigdirs="$noconfigdirs target-libgloss" ;;
1056     esac
1057     ;;
1058   sparc-*-sunos4*)
1059     if test x${is_cross_compiler} = xno ; then
1060            use_gnu_ld=no
1061     fi
1062     ;;
1063   tic6x-*-*)
1064     noconfigdirs="$noconfigdirs sim"
1065     ;;
1066   tilepro-*-* | tilegx-*-*)
1067     noconfigdirs="$noconfigdirs sim"
1068     ;;
1069   v810-*-*)
1070     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1071     ;;
1072   vax-*-*)
1073     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1074     ;;
1075 esac
1076
1077 # If we aren't building newlib, then don't build libgloss, since libgloss
1078 # depends upon some newlib header files.
1079 case "${noconfigdirs}" in
1080   *target-libgloss*) ;;
1081   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1082 esac
1083
1084 # Work in distributions that contain no compiler tools, like Autoconf.
1085 host_makefile_frag=/dev/null
1086 if test -d ${srcdir}/config ; then
1087 case "${host}" in
1088   i[[3456789]]86-*-msdosdjgpp*)
1089     host_makefile_frag="config/mh-djgpp"
1090     ;;
1091   *-cygwin*)
1092     ACX_CHECK_CYGWIN_CAT_WORKS
1093     host_makefile_frag="config/mh-cygwin"
1094     ;;
1095   *-mingw*)
1096     host_makefile_frag="config/mh-mingw"
1097     ;;
1098   hppa*-hp-hpux10*)
1099     host_makefile_frag="config/mh-pa-hpux10"
1100     ;;
1101   hppa*-hp-hpux*)
1102     host_makefile_frag="config/mh-pa"
1103     ;;
1104   hppa*-*)
1105     host_makefile_frag="config/mh-pa"
1106     ;;
1107   *-*-darwin*)
1108     host_makefile_frag="config/mh-darwin"
1109     ;;
1110   powerpc-*-aix*)
1111     host_makefile_frag="config/mh-ppc-aix"
1112     ;;
1113   rs6000-*-aix*)
1114     host_makefile_frag="config/mh-ppc-aix"
1115     ;;
1116 esac
1117 fi
1118
1119 if test "${build}" != "${host}" ; then
1120   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1121   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1122   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1123   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1124   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1125   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1126   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1127   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1128   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1129   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1130   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1131   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1132   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1133 else
1134   AR_FOR_BUILD="\$(AR)"
1135   AS_FOR_BUILD="\$(AS)"
1136   CC_FOR_BUILD="\$(CC)"
1137   CXX_FOR_BUILD="\$(CXX)"
1138   GCJ_FOR_BUILD="\$(GCJ)"
1139   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1140   GOC_FOR_BUILD="\$(GOC)"
1141   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1142   LD_FOR_BUILD="\$(LD)"
1143   NM_FOR_BUILD="\$(NM)"
1144   RANLIB_FOR_BUILD="\$(RANLIB)"
1145   WINDRES_FOR_BUILD="\$(WINDRES)"
1146   WINDMC_FOR_BUILD="\$(WINDMC)"
1147 fi
1148
1149 AC_PROG_CC
1150 AC_PROG_CXX
1151
1152 # We must set the default linker to the linker used by gcc for the correct
1153 # operation of libtool.  If LD is not defined and we are using gcc, try to
1154 # set the LD default to the ld used by gcc.
1155 if test -z "$LD"; then
1156   if test "$GCC" = yes; then
1157     case $build in
1158     *-*-mingw*)
1159       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1160     *)
1161       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1162     esac
1163     case $gcc_prog_ld in
1164     # Accept absolute paths.
1165     [[\\/]* | [A-Za-z]:[\\/]*)]
1166       LD="$gcc_prog_ld" ;;
1167     esac
1168   fi
1169 fi
1170
1171 ACX_PROG_GNAT
1172 ACX_PROG_CMP_IGNORE_INITIAL
1173
1174 AC_ARG_ENABLE([bootstrap],
1175 [AS_HELP_STRING([--enable-bootstrap],
1176                 [enable bootstrapping @<:@yes if native build@:>@])],,
1177 enable_bootstrap=default)
1178
1179 # Issue errors and warnings for invalid/strange bootstrap combinations.
1180 if test -r $srcdir/gcc/configure; then
1181   have_compiler=yes
1182 else
1183   have_compiler=no
1184 fi
1185
1186 case "$have_compiler:$host:$target:$enable_bootstrap" in
1187   *:*:*:no) ;;
1188
1189   # Default behavior.  Enable bootstrap if we have a compiler
1190   # and we are in a native configuration.
1191   yes:$build:$build:default)
1192     enable_bootstrap=yes ;;
1193
1194   *:*:*:default)
1195     enable_bootstrap=no ;;
1196
1197   # We have a compiler and we are in a native configuration, bootstrap is ok
1198   yes:$build:$build:yes)
1199     ;;
1200
1201   # Other configurations, but we have a compiler.  Assume the user knows
1202   # what he's doing.
1203   yes:*:*:yes)
1204     AC_MSG_WARN([trying to bootstrap a cross compiler])
1205     ;;
1206
1207   # No compiler: if they passed --enable-bootstrap explicitly, fail
1208   no:*:*:yes)
1209     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1210
1211   # Fail if wrong command line
1212   *)
1213     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1214     ;;
1215 esac
1216
1217 # Used for setting $lt_cv_objdir
1218 _LT_CHECK_OBJDIR
1219
1220 # Check for GMP, MPFR and MPC
1221 gmplibs="-lmpc -lmpfr -lgmp"
1222 gmpinc=
1223 have_gmp=no
1224
1225 # Specify a location for mpc
1226 # check for this first so it ends up on the link line before mpfr.
1227 AC_ARG_WITH(mpc,
1228 [AS_HELP_STRING([--with-mpc=PATH],
1229                 [specify prefix directory for installed MPC package.
1230                  Equivalent to --with-mpc-include=PATH/include
1231                  plus --with-mpc-lib=PATH/lib])])
1232 AC_ARG_WITH(mpc-include,
1233 [AS_HELP_STRING([--with-mpc-include=PATH],
1234                 [specify directory for installed MPC include files])])
1235 AC_ARG_WITH(mpc-lib,
1236 [AS_HELP_STRING([--with-mpc-lib=PATH],
1237                 [specify directory for the installed MPC library])])
1238
1239 if test "x$with_mpc" != x; then
1240   gmplibs="-L$with_mpc/lib $gmplibs"
1241   gmpinc="-I$with_mpc/include $gmpinc"
1242 fi
1243 if test "x$with_mpc_include" != x; then
1244   gmpinc="-I$with_mpc_include $gmpinc"
1245 fi
1246 if test "x$with_mpc_lib" != x; then
1247   gmplibs="-L$with_mpc_lib $gmplibs"
1248 fi
1249 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1250   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1251   gmpinc='-I$$s/mpc/src '"$gmpinc"
1252   # Do not test the mpc version.  Assume that it is sufficient, since
1253   # it is in the source tree, and the library has not been built yet
1254   # but it would be included on the link line in the version check below
1255   # hence making the test fail.
1256   have_gmp=yes
1257 fi
1258
1259 # Specify a location for mpfr
1260 # check for this first so it ends up on the link line before gmp.
1261 AC_ARG_WITH(mpfr-dir,
1262 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1263 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1264 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1265
1266 AC_ARG_WITH(mpfr,
1267 [AS_HELP_STRING([--with-mpfr=PATH],
1268                 [specify prefix directory for installed MPFR package.
1269                  Equivalent to --with-mpfr-include=PATH/include
1270                  plus --with-mpfr-lib=PATH/lib])])
1271 AC_ARG_WITH(mpfr-include,
1272 [AS_HELP_STRING([--with-mpfr-include=PATH],
1273                 [specify directory for installed MPFR include files])])
1274 AC_ARG_WITH(mpfr-lib,
1275 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1276                 [specify directory for the installed MPFR library])])
1277
1278 if test "x$with_mpfr" != x; then
1279   gmplibs="-L$with_mpfr/lib $gmplibs"
1280   gmpinc="-I$with_mpfr/include $gmpinc"
1281 fi
1282 if test "x$with_mpfr_include" != x; then
1283   gmpinc="-I$with_mpfr_include $gmpinc"
1284 fi
1285 if test "x$with_mpfr_lib" != x; then
1286   gmplibs="-L$with_mpfr_lib $gmplibs"
1287 fi
1288 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1289   # MPFR v3.1.0 moved the sources into a src sub-directory.
1290   if test -d ${srcdir}/mpfr/src; then
1291     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1292     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1293     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1294   else
1295     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1296     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1297     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1298   fi
1299   # Do not test the mpfr version.  Assume that it is sufficient, since
1300   # it is in the source tree, and the library has not been built yet
1301   # but it would be included on the link line in the version check below
1302   # hence making the test fail.
1303   have_gmp=yes
1304 fi
1305
1306 # Specify a location for gmp
1307 AC_ARG_WITH(gmp-dir,
1308 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1309 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1310 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1311
1312 AC_ARG_WITH(gmp,
1313 [AS_HELP_STRING([--with-gmp=PATH],
1314                 [specify prefix directory for the installed GMP package.
1315                  Equivalent to --with-gmp-include=PATH/include
1316                  plus --with-gmp-lib=PATH/lib])])
1317 AC_ARG_WITH(gmp-include,
1318 [AS_HELP_STRING([--with-gmp-include=PATH],
1319                 [specify directory for installed GMP include files])])
1320 AC_ARG_WITH(gmp-lib,
1321 [AS_HELP_STRING([--with-gmp-lib=PATH],
1322                 [specify directory for the installed GMP library])])
1323
1324
1325 if test "x$with_gmp" != x; then
1326   gmplibs="-L$with_gmp/lib $gmplibs"
1327   gmpinc="-I$with_gmp/include $gmpinc"
1328 fi
1329 if test "x$with_gmp_include" != x; then
1330   gmpinc="-I$with_gmp_include $gmpinc"
1331 fi
1332 if test "x$with_gmp_lib" != x; then
1333   gmplibs="-L$with_gmp_lib $gmplibs"
1334 fi
1335 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1336   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1337   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1338   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1339   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1340   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1341   # Do not test the gmp version.  Assume that it is sufficient, since
1342   # it is in the source tree, and the library has not been built yet
1343   # but it would be included on the link line in the version check below
1344   # hence making the test fail.
1345   have_gmp=yes
1346 fi
1347
1348 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1349   have_gmp=yes
1350   saved_CFLAGS="$CFLAGS"
1351   CFLAGS="$CFLAGS $gmpinc"
1352   # Check for the recommended and required versions of GMP.
1353   AC_MSG_CHECKING([for the correct version of gmp.h])
1354   AC_TRY_COMPILE([#include "gmp.h"],[
1355   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1356   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1357   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,0)
1358   choke me
1359   #endif
1360   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1361   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1362   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1363   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1364   choke me
1365   #endif
1366   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1367    [AC_MSG_RESULT([no]); have_gmp=no])
1368
1369   # If we have GMP, check the MPFR version.
1370   if test x"$have_gmp" = xyes; then
1371     # Check for the recommended and required versions of MPFR.
1372     AC_MSG_CHECKING([for the correct version of mpfr.h])
1373     AC_TRY_COMPILE([#include <gmp.h>
1374     #include <mpfr.h>],[
1375     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1376     choke me
1377     #endif
1378     ], [AC_TRY_COMPILE([#include <gmp.h>
1379     #include <mpfr.h>],[
1380     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1381     choke me
1382     #endif
1383     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1384      [AC_MSG_RESULT([no]); have_gmp=no])
1385   fi
1386
1387   # Check for the MPC header version.
1388   if test x"$have_gmp" = xyes ; then
1389     # Check for the recommended and required versions of MPC.
1390     AC_MSG_CHECKING([for the correct version of mpc.h])
1391     AC_TRY_COMPILE([#include <mpc.h>],[
1392     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1393     choke me
1394     #endif
1395     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1396     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1397     choke me
1398     #endif
1399     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1400      [AC_MSG_RESULT([no]); have_gmp=no])
1401   fi
1402
1403   # Now check the MPFR library.
1404   if test x"$have_gmp" = xyes; then
1405     saved_LIBS="$LIBS"
1406     LIBS="$LIBS $gmplibs"
1407     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1408     AC_TRY_LINK([#include <mpc.h>],[
1409     mpfr_t n;
1410     mpfr_t x;
1411     mpc_t c;
1412     int t;
1413     mpfr_init (n);
1414     mpfr_init (x);
1415     mpfr_atan2 (n, n, x, GMP_RNDN);
1416     mpfr_erfc (n, x, GMP_RNDN);
1417     mpfr_subnormalize (x, t, GMP_RNDN);
1418     mpfr_clear(n);
1419     mpfr_clear(x);
1420     mpc_init2 (c, 53);
1421     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1422     mpc_cosh (c, c, MPC_RNDNN);
1423     mpc_pow (c, c, c, MPC_RNDNN);
1424     mpc_acosh (c, c, MPC_RNDNN);
1425     mpc_clear (c);
1426     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1427     LIBS="$saved_LIBS"
1428   fi
1429
1430   CFLAGS="$saved_CFLAGS"
1431
1432 # The library versions listed in the error message below should match
1433 # the HARD-minimums enforced above.
1434   if test x$have_gmp != xyes; then
1435     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1436 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1437 their locations.  Source code for these libraries can be found at
1438 their respective hosting sites as well as at
1439 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1440 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1441 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1442 make sure that you have installed both the libraries and the header
1443 files.  They may be located in separate packages.])
1444   fi
1445 fi
1446
1447 # Flags needed for both GMP, MPFR and/or MPC.
1448 AC_SUBST(gmplibs)
1449 AC_SUBST(gmpinc)
1450 AC_SUBST(extra_mpfr_configure_flags)
1451 AC_SUBST(extra_mpc_gmp_configure_flags)
1452 AC_SUBST(extra_mpc_mpfr_configure_flags)
1453 AC_SUBST(extra_isl_gmp_configure_flags)
1454
1455 # Allow host libstdc++ to be specified for static linking with PPL.
1456 AC_ARG_WITH(host-libstdcxx,
1457 [AS_HELP_STRING([--with-host-libstdcxx=L],
1458                 [use linker arguments L to link with libstdc++
1459                  when linking with PPL])])
1460
1461 case $with_host_libstdcxx in
1462   no|yes)
1463     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1464     ;;
1465 esac
1466
1467 # Linker flags to use for stage1 or when not boostrapping.
1468 AC_ARG_WITH(stage1-ldflags,
1469 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1470 [if test "$withval" = "no" -o "$withval" = "yes"; then
1471    stage1_ldflags=
1472  else
1473    stage1_ldflags=$withval
1474  fi],
1475 [stage1_ldflags=])
1476 AC_SUBST(stage1_ldflags)
1477
1478 # Libraries to use for stage1 or when not bootstrapping.
1479 AC_ARG_WITH(stage1-libs,
1480 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1481 [if test "$withval" = "no" -o "$withval" = "yes"; then
1482    stage1_libs=
1483  else
1484    stage1_libs=$withval
1485  fi],
1486 [stage1_libs=$with_host_libstdcxx])
1487 AC_SUBST(stage1_libs)
1488
1489 # Libraries to use for stage2 and later builds.  This defaults to the
1490 # argument passed to --with-host-libstdcxx.
1491 AC_ARG_WITH(boot-libs,
1492 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1493 [if test "$withval" = "no" -o "$withval" = "yes"; then
1494    poststage1_libs=
1495  else
1496    poststage1_libs=$withval
1497  fi],
1498 [poststage1_libs=$with_host_libstdcxx])
1499 AC_SUBST(poststage1_libs)
1500
1501 # Linker flags to use for stage2 and later builds.
1502 AC_ARG_WITH(boot-ldflags,
1503 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1504                 [linker flags for stage2 and later])],
1505 [if test "$withval" = "no" -o "$withval" = "yes"; then
1506    poststage1_ldflags=
1507  else
1508    poststage1_ldflags=$withval
1509  fi],
1510 [poststage1_ldflags=
1511  # In stages 2 and 3, default to linking libstdc++ and libgcc
1512  # statically.  But if the user explicitly specified the libraries to
1513  # use, trust that they are doing what they want.
1514  if test "$poststage1_libs" = ""; then
1515    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1516  fi])
1517 AC_SUBST(poststage1_ldflags)
1518
1519 # Check for ISL
1520 dnl Provide configure switches and initialize islinc & isllibs
1521 dnl with user input.
1522 ISL_INIT_FLAGS
1523 if test "x$with_isl" != "xno"; then
1524   dnl The minimal version of ISL required for Graphite.
1525   ISL_CHECK_VERSION(0,10)
1526
1527   dnl Only execute fail-action, if ISL has been requested.
1528   ISL_IF_FAILED([
1529     AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
1530 fi
1531
1532 # Check for CLOOG
1533 dnl Provide configure switches and initialize clooginc & clooglibs
1534 dnl with user input.
1535 CLOOG_INIT_FLAGS
1536 if test "x$isllibs" = x && test "x$islinc" = x; then
1537   clooglibs=
1538   clooginc=
1539 elif test "x$with_cloog" != "xno"; then
1540   dnl The minimal version of CLooG required for Graphite.
1541   dnl
1542   dnl If we use CLooG-Legacy, the provided version information is
1543   dnl ignored.
1544   CLOOG_CHECK_VERSION(0,17,0)
1545
1546   dnl Only execute fail-action, if CLooG has been requested.
1547   CLOOG_IF_FAILED([
1548     AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
1549 fi
1550
1551 # If either the ISL or the CLooG check failed, disable builds of in-tree
1552 # variants of both
1553 if test "x$clooglibs" = x && test "x$clooginc" = x; then
1554   noconfigdirs="$noconfigdirs cloog isl"
1555 fi
1556
1557 # Check for LTO support.
1558 AC_ARG_ENABLE(lto,
1559 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1560 enable_lto=$enableval,
1561 enable_lto=yes; default_enable_lto=yes)
1562
1563 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1564   build_lto_plugin=yes
1565 ],[if test x"$default_enable_lto" = x"yes" ; then
1566     case $target in
1567       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1568       # On other non-ELF platforms, LTO has yet to be validated.
1569       *) enable_lto=no ;;
1570     esac
1571   else
1572   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1573   # It would also be nice to check the binutils support, but we don't
1574   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1575   # warn during gcc/ subconfigure; unless you're bootstrapping with
1576   # -flto it won't be needed until after installation anyway.
1577     case $target in
1578       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1579       *) if test x"$enable_lto" = x"yes"; then
1580         AC_MSG_ERROR([LTO support is not enabled for this target.])
1581         fi
1582       ;;
1583     esac
1584   fi
1585   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1586   # Build it unless LTO was explicitly disabled.
1587   case $target in
1588     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1589     *) ;;
1590   esac
1591 ])
1592
1593
1594 # By default, C and C++ are the only stage 1 languages.
1595 stage1_languages=,c,
1596
1597 # Target libraries that we bootstrap.
1598 bootstrap_target_libs=,target-libgcc,
1599
1600 # Figure out what language subdirectories are present.
1601 # Look if the user specified --enable-languages="..."; if not, use
1602 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1603 # go away some day.
1604 # NB:  embedded tabs in this IF block -- do not untabify
1605 if test -d ${srcdir}/gcc; then
1606   if test x"${enable_languages+set}" != xset; then
1607     if test x"${LANGUAGES+set}" = xset; then
1608       enable_languages="${LANGUAGES}"
1609         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1610     else
1611       enable_languages=all
1612     fi
1613   else
1614     if test x"${enable_languages}" = x ||
1615        test x"${enable_languages}" = xyes;
1616        then
1617       echo configure.in: --enable-languages needs at least one language argument 1>&2
1618       exit 1
1619     fi
1620   fi
1621   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1622
1623   # 'f95' is the old name for the 'fortran' language. We issue a warning
1624   # and make the substitution.
1625   case ,${enable_languages}, in
1626     *,f95,*)
1627       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1628       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1629       ;;
1630   esac
1631
1632   # If bootstrapping, C++ must be enabled.
1633   case ",$enable_languages,:$enable_bootstrap" in
1634     *,c++,*:*) ;;
1635     *:yes)
1636       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1637         enable_languages="${enable_languages},c++"
1638       else
1639         AC_MSG_ERROR([bootstrapping requires c++ sources])
1640       fi
1641       ;;
1642   esac
1643
1644   # First scan to see if an enabled language requires some other language.
1645   # We assume that a given config-lang.in will list all the language
1646   # front ends it requires, even if some are required indirectly.
1647   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1648     case ${lang_frag} in
1649       ..) ;;
1650       # The odd quoting in the next line works around
1651       # an apparent bug in bash 1.12 on linux.
1652       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1653       *)
1654         # From the config-lang.in, get $language, $lang_requires, and
1655         # $lang_requires_boot_languages.
1656         language=
1657         lang_requires=
1658         lang_requires_boot_languages=
1659         . ${lang_frag}
1660         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1661           case ,${enable_languages}, in
1662             *,$other,*) ;;
1663             *,all,*) ;;
1664             *,$language,*)
1665               echo " \`$other' language required by \`$language'; enabling" 1>&2
1666               enable_languages="${enable_languages},${other}"
1667               ;;
1668           esac
1669         done
1670         for other in ${lang_requires_boot_languages} ; do
1671           if test "$other" != "c"; then
1672             case ,${enable_stage1_languages}, in
1673               *,$other,*) ;;
1674               *,all,*) ;;
1675               *)
1676                 case ,${enable_languages}, in
1677                   *,$language,*)
1678                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1679                     enable_stage1_languages="$enable_stage1_languages,${other}"
1680                     ;;
1681                 esac
1682                 ;;
1683             esac
1684           fi
1685         done
1686         ;;
1687     esac
1688   done
1689
1690   new_enable_languages=,c,
1691
1692   # If LTO is enabled, add the LTO front end.
1693   extra_host_libiberty_configure_flags=
1694   if test "$enable_lto" = "yes" ; then
1695     case ,${enable_languages}, in
1696       *,lto,*) ;;
1697       *) enable_languages="${enable_languages},lto" ;;
1698     esac
1699     if test "${build_lto_plugin}" = "yes" ; then
1700       configdirs="$configdirs lto-plugin"
1701       extra_host_libiberty_configure_flags=--enable-shared
1702     fi
1703   fi
1704   AC_SUBST(extra_host_libiberty_configure_flags)
1705
1706   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1707   potential_languages=,c,
1708
1709   enabled_target_libs=
1710   disabled_target_libs=
1711
1712   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1713     case ${lang_frag} in
1714       ..) ;;
1715       # The odd quoting in the next line works around
1716       # an apparent bug in bash 1.12 on linux.
1717       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1718       *)
1719         # From the config-lang.in, get $language, $target_libs,
1720         # $lang_dirs, $boot_language, and $build_by_default
1721         language=
1722         target_libs=
1723         lang_dirs=
1724         subdir_requires=
1725         boot_language=no
1726         build_by_default=yes
1727         . ${lang_frag}
1728         if test x${language} = x; then
1729           echo "${lang_frag} doesn't set \$language." 1>&2
1730           exit 1
1731         fi
1732
1733         if test "$language" = "c++"; then
1734           boot_language=yes
1735         fi
1736
1737         case ,${enable_languages}, in
1738           *,${language},*)
1739             # Language was explicitly selected; include it
1740             # unless it is C, which is enabled by default.
1741             if test "$language" != "c"; then
1742               add_this_lang=yes
1743             fi
1744             ;;
1745           *,all,*)
1746             # 'all' was selected, select it if it is a default language
1747             add_this_lang=${build_by_default}
1748             ;;
1749           *)
1750             add_this_lang=no
1751             ;;
1752         esac
1753
1754         # Disable languages that need other directories if these aren't available.
1755         for i in $subdir_requires; do
1756           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1757           case ,${enable_languages}, in
1758             *,${language},*)
1759               # Specifically requested language; tell them.
1760               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1761               ;;
1762             *)
1763               # Silently disable.
1764               add_this_lang=unsupported
1765               ;;
1766           esac
1767         done
1768
1769         # Disable Ada if no preexisting GNAT is available.
1770         case ,${enable_languages},:${language}:${have_gnat} in
1771           *,${language},*:ada:no)
1772             # Specifically requested language; tell them.
1773             AC_MSG_ERROR([GNAT is required to build $language])
1774             ;;
1775           *:ada:no)
1776             # Silently disable.
1777             add_this_lang=unsupported
1778             ;;
1779         esac
1780
1781         # Disable a language that is unsupported by the target.
1782         case " $unsupported_languages " in
1783           *" $language "*)
1784             add_this_lang=unsupported
1785             ;;
1786         esac
1787
1788         case $add_this_lang in
1789           unsupported)
1790             # Remove language-dependent dirs.
1791             disabled_target_libs="$disabled_target_libs $target_libs"
1792             noconfigdirs="$noconfigdirs $lang_dirs"
1793             ;;
1794           no)
1795             # Remove language-dependent dirs; still show language as supported.
1796             disabled_target_libs="$disabled_target_libs $target_libs"
1797             noconfigdirs="$noconfigdirs $lang_dirs"
1798             potential_languages="${potential_languages}${language},"
1799             ;;
1800           yes)
1801             new_enable_languages="${new_enable_languages}${language},"
1802             potential_languages="${potential_languages}${language},"
1803             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1804             enabled_target_libs="$enabled_target_libs $target_libs"
1805             case "${boot_language}:,$enable_stage1_languages," in
1806               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1807                 # Add to (comma-separated) list of stage 1 languages.
1808                 case ",$stage1_languages," in
1809                   *,$language,* | ,yes, | ,all,) ;;
1810                   *) stage1_languages="${stage1_languages}${language}," ;;
1811                 esac
1812                 # We need to bootstrap any supporting libraries.
1813                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1814                 ;;
1815             esac
1816             ;;
1817         esac
1818         ;;
1819     esac
1820   done
1821
1822   # Add target libraries which are only needed for disabled languages
1823   # to noconfigdirs.
1824   if test -n "$disabled_target_libs"; then
1825     for dir in $disabled_target_libs; do
1826       case " $enabled_target_libs " in
1827       *" ${dir} "*) ;;
1828       *) noconfigdirs="$noconfigdirs $dir" ;;
1829       esac
1830     done
1831   fi
1832
1833   AC_ARG_ENABLE(stage1-languages,
1834   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1835                   [choose additional languages to build during
1836                   stage1.  Mostly useful for compiler development])],
1837   [case ,${enable_stage1_languages}, in
1838     ,no,|,,)
1839       # Set it to something that will have no effect in the loop below
1840       enable_stage1_languages=c ;;
1841     ,yes,)
1842       enable_stage1_languages=`echo $new_enable_languages | \
1843         sed -e "s/^,//" -e "s/,$//" ` ;;
1844     *,all,*)
1845       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
1846         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
1847   esac
1848
1849   # Add "good" languages from enable_stage1_languages to stage1_languages,
1850   # while "bad" languages go in missing_languages.  Leave no duplicates.
1851   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
1852     case $potential_languages in
1853       *,$i,*)
1854         case $stage1_languages in
1855           *,$i,*) ;;
1856           *) stage1_languages="$stage1_languages$i," ;;
1857         esac ;;
1858       *)
1859         case $missing_languages in
1860           *,$i,*) ;;
1861           *) missing_languages="$missing_languages$i," ;;
1862         esac ;;
1863      esac
1864   done])
1865
1866   # Remove leading/trailing commas that were added for simplicity
1867   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
1868   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
1869   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
1870   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
1871
1872   if test "x$missing_languages" != x; then
1873     AC_MSG_ERROR([
1874 The following requested languages could not be built: ${missing_languages}
1875 Supported languages are: ${potential_languages}])
1876   fi
1877   if test "x$new_enable_languages" != "x$enable_languages"; then
1878     echo The following languages will be built: ${new_enable_languages}
1879     enable_languages="$new_enable_languages"
1880   fi
1881
1882   AC_SUBST(stage1_languages)
1883   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
1884 fi
1885
1886 # Handle --disable-<component> generically.
1887 for dir in $configdirs $build_configdirs $target_configdirs ; do
1888   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
1889   varname=`echo $dirname | sed -e s/+/_/g`
1890   if eval test x\${enable_${varname}} "=" xno ; then
1891     noconfigdirs="$noconfigdirs $dir"
1892   fi
1893 done
1894
1895 # Check for Boehm's garbage collector
1896 AC_ARG_ENABLE(objc-gc,
1897 [AS_HELP_STRING([--enable-objc-gc],
1898                 [enable use of Boehm's garbage collector with the
1899                  GNU Objective-C runtime])],
1900 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
1901   *,objc,*:*:yes:*target-boehm-gc*)
1902     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
1903     ;;
1904 esac])
1905
1906 # Make sure we only build Boehm's garbage collector if required.
1907 case ,${enable_languages},:${enable_objc_gc} in
1908   *,objc,*:yes)
1909     # Keep target-boehm-gc if requested for Objective-C.
1910     ;;
1911   *)
1912     # Otherwise remove target-boehm-gc depending on target-libjava.
1913     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
1914       noconfigdirs="$noconfigdirs target-boehm-gc"
1915     fi
1916     ;;
1917 esac
1918
1919 # Disable libitm if we're not building C++
1920 case ,${enable_languages}, in
1921   *,c++,*) ;;
1922   *)
1923     noconfigdirs="$noconfigdirs target-libitm"
1924     ;;
1925 esac
1926
1927 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
1928 # $build_configdirs and $target_configdirs.
1929 # If we have the source for $noconfigdirs entries, add them to $notsupp.
1930
1931 notsupp=""
1932 for dir in . $skipdirs $noconfigdirs ; do
1933   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
1934   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1935     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
1936     if test -r $srcdir/$dirname/configure ; then
1937       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1938         true
1939       else
1940         notsupp="$notsupp $dir"
1941       fi
1942     fi
1943   fi
1944   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1945     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
1946     if test -r $srcdir/$dirname/configure ; then
1947       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1948         true
1949       else
1950         notsupp="$notsupp $dir"
1951       fi
1952     fi
1953   fi
1954   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1955     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
1956     if test -r $srcdir/$dirname/configure ; then
1957       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1958         true
1959       else
1960         notsupp="$notsupp $dir"
1961       fi
1962     fi
1963   fi
1964 done
1965
1966 # Quietly strip out all directories which aren't configurable in this tree.
1967 # This relies on all configurable subdirectories being autoconfiscated, which
1968 # is now the case.
1969 build_configdirs_all="$build_configdirs"
1970 build_configdirs=
1971 for i in ${build_configdirs_all} ; do
1972   j=`echo $i | sed -e s/build-//g`
1973   if test -f ${srcdir}/$j/configure ; then
1974     build_configdirs="${build_configdirs} $i"
1975   fi
1976 done
1977
1978 configdirs_all="$configdirs"
1979 configdirs=
1980 for i in ${configdirs_all} ; do
1981   if test -f ${srcdir}/$i/configure ; then
1982     configdirs="${configdirs} $i"
1983   fi
1984 done
1985
1986 target_configdirs_all="$target_configdirs"
1987 target_configdirs=
1988 for i in ${target_configdirs_all} ; do
1989   j=`echo $i | sed -e s/target-//g`
1990   if test -f ${srcdir}/$j/configure ; then
1991     target_configdirs="${target_configdirs} $i"
1992   fi
1993 done
1994
1995 # Produce a warning message for the subdirs we can't configure.
1996 # This isn't especially interesting in the Cygnus tree, but in the individual
1997 # FSF releases, it's important to let people know when their machine isn't
1998 # supported by the one or two programs in a package.
1999
2000 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2001   # If $appdirs is non-empty, at least one of those directories must still
2002   # be configured, or we error out.  (E.g., if the gas release supports a
2003   # specified target in some subdirs but not the gas subdir, we shouldn't
2004   # pretend that all is well.)
2005   if test -n "$appdirs" ; then
2006     for dir in $appdirs ; do
2007       if test -r $dir/Makefile.in ; then
2008         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2009           appdirs=""
2010           break
2011         fi
2012         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2013           appdirs=""
2014           break
2015         fi
2016       fi
2017     done
2018     if test -n "$appdirs" ; then
2019       echo "*** This configuration is not supported by this package." 1>&2
2020       exit 1
2021     fi
2022   fi
2023   # Okay, some application will build, or we don't care to check.  Still
2024   # notify of subdirs not getting built.
2025   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2026   echo "    ${notsupp}" 1>&2
2027   echo "    (Any other directories should still work fine.)" 1>&2
2028 fi
2029
2030 case "$host" in
2031   *msdosdjgpp*)
2032     enable_gdbtk=no ;;
2033 esac
2034
2035 # To find our prefix, in gcc_cv_tool_prefix.
2036 ACX_TOOL_DIRS
2037
2038 copy_dirs=
2039
2040 AC_ARG_WITH([build-sysroot],
2041   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2042                   [use sysroot as the system root during the build])],
2043   [if test x"$withval" != x ; then
2044      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2045    fi],
2046   [SYSROOT_CFLAGS_FOR_TARGET=])
2047 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2048
2049 AC_ARG_WITH([debug-prefix-map],
2050   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2051                   [map A to B, C to D ... in debug information])],
2052   [if test x"$withval" != x; then
2053      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2054      for debug_map in $withval; do
2055        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2056      done
2057    fi],
2058   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2059 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2060
2061 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2062 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2063 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2064 # We want to ensure that TARGET libraries (which we know are built with
2065 # gcc) are built with "-O2 -g", so include those options when setting
2066 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2067 if test "x$CFLAGS_FOR_TARGET" = x; then
2068   CFLAGS_FOR_TARGET=$CFLAGS
2069   case " $CFLAGS " in
2070     *" -O2 "*) ;;
2071     *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2072   esac
2073   case " $CFLAGS " in
2074     *" -g "* | *" -g3 "*) ;;
2075     *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2076   esac
2077 fi
2078 AC_SUBST(CFLAGS_FOR_TARGET)
2079
2080 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2081   CXXFLAGS_FOR_TARGET=$CXXFLAGS
2082   case " $CXXFLAGS " in
2083     *" -O2 "*) ;;
2084     *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2085   esac
2086   case " $CXXFLAGS " in
2087     *" -g "* | *" -g3 "*) ;;
2088     *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2089   esac
2090 fi
2091 AC_SUBST(CXXFLAGS_FOR_TARGET)
2092
2093 AC_SUBST(LDFLAGS_FOR_TARGET)
2094
2095 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2096 # the named directory are copied to $(tooldir)/sys-include.
2097 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2098   if test x${is_cross_compiler} = xno ; then
2099     echo 1>&2 '***' --with-headers is only supported when cross compiling
2100     exit 1
2101   fi
2102   if test x"${with_headers}" != xyes ; then
2103     x=${gcc_cv_tool_prefix}
2104     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2105   fi
2106 fi
2107
2108 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2109 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2110 # are permitted.
2111 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2112   if test x${is_cross_compiler} = xno ; then
2113     echo 1>&2 '***' --with-libs is only supported when cross compiling
2114     exit 1
2115   fi
2116   if test x"${with_libs}" != xyes ; then
2117     # Copy the libraries in reverse order, so that files in the first named
2118     # library override files in subsequent libraries.
2119     x=${gcc_cv_tool_prefix}
2120     for l in ${with_libs}; do
2121       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2122     done
2123   fi
2124 fi
2125
2126 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2127 #
2128 # This is done by determining whether or not the appropriate directory
2129 # is available, and by checking whether or not specific configurations
2130 # have requested that this magic not happen.
2131 #
2132 # The command line options always override the explicit settings in
2133 # configure.in, and the settings in configure.in override this magic.
2134 #
2135 # If the default for a toolchain is to use GNU as and ld, and you don't
2136 # want to do that, then you should use the --without-gnu-as and
2137 # --without-gnu-ld options for the configure script.  Similarly, if
2138 # the default is to use the included zlib and you don't want to do that,
2139 # you should use the --with-system-zlib option for the configure script.
2140
2141 if test x${use_gnu_as} = x &&
2142    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2143   with_gnu_as=yes
2144   extra_host_args="$extra_host_args --with-gnu-as"
2145 fi
2146
2147 if test x${use_gnu_ld} = x &&
2148    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2149   with_gnu_ld=yes
2150   extra_host_args="$extra_host_args --with-gnu-ld"
2151 fi
2152
2153 if test x${use_included_zlib} = x &&
2154    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2155   :
2156 else
2157   with_system_zlib=yes
2158   extra_host_args="$extra_host_args --with-system-zlib"
2159 fi
2160
2161 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2162 # can detect this case.
2163
2164 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2165   with_newlib=yes
2166   extra_host_args="$extra_host_args --with-newlib"
2167 fi
2168
2169 # Handle ${copy_dirs}
2170 set fnord ${copy_dirs}
2171 shift
2172 while test $# != 0 ; do
2173   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2174     :
2175   else
2176     echo Copying $1 to $2
2177
2178     # Use the install script to create the directory and all required
2179     # parent directories.
2180     if test -d $2 ; then
2181       :
2182     else
2183       echo >config.temp
2184       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2185     fi
2186
2187     # Copy the directory, assuming we have tar.
2188     # FIXME: Should we use B in the second tar?  Not all systems support it.
2189     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2190
2191     # It is the responsibility of the user to correctly adjust all
2192     # symlinks.  If somebody can figure out how to handle them correctly
2193     # here, feel free to add the code.
2194
2195     echo $1 > $2/COPIED
2196   fi
2197   shift; shift
2198 done
2199
2200 # Determine a target-dependent exec_prefix that the installed
2201 # gcc will search in.  Keep this list sorted by triplet, with
2202 # the *-*-osname triplets last.
2203 md_exec_prefix=
2204 case "${target}" in
2205   i[[34567]]86-pc-msdosdjgpp*)
2206     md_exec_prefix=/dev/env/DJDIR/bin
2207     ;;
2208   *-*-hpux* | \
2209   *-*-nto-qnx* | \
2210   *-*-solaris2*)
2211     md_exec_prefix=/usr/ccs/bin
2212     ;;
2213 esac
2214
2215 extra_arflags_for_target=
2216 extra_nmflags_for_target=
2217 extra_ranlibflags_for_target=
2218 target_makefile_frag=/dev/null
2219 case "${target}" in
2220   spu-*-*)
2221     target_makefile_frag="config/mt-spu"
2222     ;;
2223   mips*-sde-elf* | mips*-mti-elf*)
2224     target_makefile_frag="config/mt-sde"
2225     ;;
2226   mipsisa*-*-elfoabi*)
2227     target_makefile_frag="config/mt-mips-elfoabi"
2228     ;;
2229   mips*-*-*linux* | mips*-*-gnu*)
2230     target_makefile_frag="config/mt-mips-gnu"
2231     ;;
2232   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2233     target_makefile_frag="config/mt-gnu"
2234     ;;
2235   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2236     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2237     # commands to handle both 32-bit and 64-bit objects.  These flags are
2238     # harmless if we're using GNU nm or ar.
2239     extra_arflags_for_target=" -X32_64"
2240     extra_nmflags_for_target=" -B -X32_64"
2241     ;;
2242 esac
2243
2244 alphaieee_frag=/dev/null
2245 case $target in
2246   alpha*-*-*)
2247     # This just makes sure to use the -mieee option to build target libs.
2248     # This should probably be set individually by each library.
2249     alphaieee_frag="config/mt-alphaieee"
2250     ;;
2251 esac
2252
2253 # If --enable-target-optspace always use -Os instead of -O2 to build
2254 # the target libraries, similarly if it is not specified, use -Os
2255 # on selected platforms.
2256 ospace_frag=/dev/null
2257 case "${enable_target_optspace}:${target}" in
2258   yes:*)
2259     ospace_frag="config/mt-ospace"
2260     ;;
2261   :d30v-*)
2262     ospace_frag="config/mt-d30v"
2263     ;;
2264   :m32r-* | :d10v-* | :fr30-*)
2265     ospace_frag="config/mt-ospace"
2266     ;;
2267   no:* | :*)
2268     ;;
2269   *)
2270     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2271     ;;
2272 esac
2273
2274 # Some systems (e.g., one of the i386-aix systems the gas testers are
2275 # using) don't handle "\$" correctly, so don't use it here.
2276 tooldir='${exec_prefix}'/${target_noncanonical}
2277 build_tooldir=${tooldir}
2278
2279 # Create a .gdbinit file which runs the one in srcdir
2280 # and tells GDB to look there for source files.
2281
2282 if test -r ${srcdir}/.gdbinit ; then
2283   case ${srcdir} in
2284     .) ;;
2285     *) cat > ./.gdbinit <<EOF
2286 # ${NO_EDIT}
2287 dir ${srcdir}
2288 dir .
2289 source ${srcdir}/.gdbinit
2290 EOF
2291     ;;
2292   esac
2293 fi
2294
2295 # Make sure that the compiler is able to generate an executable.  If it
2296 # can't, we are probably in trouble.  We don't care whether we can run the
2297 # executable--we might be using a cross compiler--we only care whether it
2298 # can be created.  At this point the main configure script has set CC.
2299 we_are_ok=no
2300 echo "int main () { return 0; }" > conftest.c
2301 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2302 if test $? = 0 ; then
2303   if test -s conftest || test -s conftest.exe ; then
2304     we_are_ok=yes
2305   fi
2306 fi
2307 case $we_are_ok in
2308   no)
2309     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2310     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2311     rm -f conftest*
2312     exit 1
2313     ;;
2314 esac
2315 rm -f conftest*
2316
2317 # Decide which environment variable is used to find dynamic libraries.
2318 case "${host}" in
2319   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2320   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2321   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2322   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2323 esac
2324
2325 # On systems where the dynamic library environment variable is PATH,
2326 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2327 # built executables to PATH.
2328 if test "$RPATH_ENVVAR" = PATH; then
2329   GCC_SHLIB_SUBDIR=/shlib
2330 else
2331   GCC_SHLIB_SUBDIR=
2332 fi
2333
2334 # Record target_configdirs and the configure arguments for target and
2335 # build configuration in Makefile.
2336 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2337 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2338
2339 # If we are building libgomp, bootstrap it.
2340 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2341   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2342 fi
2343
2344 # Determine whether gdb needs tk/tcl or not.
2345 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2346 # and in that case we want gdb to be built without tk.  Ugh!
2347 # In fact I believe gdb is the *only* package directly dependent on tk,
2348 # so we should be able to put the 'maybe's in unconditionally and
2349 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2350 # 100% sure that that's safe though.
2351
2352 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2353 case "$enable_gdbtk" in
2354   no)
2355     GDB_TK="" ;;
2356   yes)
2357     GDB_TK="${gdb_tk}" ;;
2358   *)
2359     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2360     # distro.  Eventually someone will fix this and move Insight, nee
2361     # gdbtk to a separate directory.
2362     if test -d ${srcdir}/gdb/gdbtk ; then
2363       GDB_TK="${gdb_tk}"
2364     else
2365       GDB_TK=""
2366     fi
2367     ;;
2368 esac
2369 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2370 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2371
2372 # Strip out unwanted targets.
2373
2374 # While at that, we remove Makefiles if we were started for recursive
2375 # configuration, so that the top-level Makefile reconfigures them,
2376 # like we used to do when configure itself was recursive.
2377
2378 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2379 # but now we're fixing up the Makefile ourselves with the additional
2380 # commands passed to AC_CONFIG_FILES.  Use separate variables
2381 # extrasub-{build,host,target} not because there is any reason to split
2382 # the substitutions up that way, but only to remain below the limit of
2383 # 99 commands in a script, for HP-UX sed.
2384 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2385
2386 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2387   yes:yes:*\ gold\ *:*,c++,*) ;;
2388   yes:yes:*\ gold\ *:*)
2389     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2390     ;;
2391 esac
2392
2393 # Adjust the toplevel makefile according to whether bootstrap was selected.
2394 case $enable_bootstrap in
2395   yes)
2396     bootstrap_suffix=bootstrap
2397     BUILD_CONFIG=bootstrap-debug
2398     ;;
2399   no)
2400     bootstrap_suffix=no-bootstrap
2401     BUILD_CONFIG=
2402     ;;
2403 esac
2404
2405 AC_MSG_CHECKING(for default BUILD_CONFIG)
2406
2407 AC_ARG_WITH([build-config],
2408   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2409                   [use config/NAME.mk build configuration])],
2410   [case $with_build_config in
2411    yes) with_build_config= ;;
2412    no) with_build_config= BUILD_CONFIG= ;;
2413    esac])
2414
2415 if test "x${with_build_config}" != x; then
2416   BUILD_CONFIG=$with_build_config
2417 else
2418   case $BUILD_CONFIG in
2419   bootstrap-debug)
2420     if echo "int f (void) { return 0; }" > conftest.c &&
2421        ${CC} -c conftest.c &&
2422        mv conftest.o conftest.o.g0 &&
2423        ${CC} -c -g conftest.c &&
2424        mv conftest.o conftest.o.g &&
2425        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2426       :
2427     else
2428       BUILD_CONFIG=
2429     fi
2430     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2431     ;;
2432   esac
2433 fi
2434 AC_MSG_RESULT($BUILD_CONFIG)
2435 AC_SUBST(BUILD_CONFIG)
2436
2437 extrasub_build=
2438 for module in ${build_configdirs} ; do
2439   if test -z "${no_recursion}" \
2440      && test -f ${build_subdir}/${module}/Makefile; then
2441     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2442     rm -f ${build_subdir}/${module}/Makefile
2443   fi
2444   extrasub_build="$extrasub_build
2445 /^@if build-$module\$/d
2446 /^@endif build-$module\$/d
2447 /^@if build-$module-$bootstrap_suffix\$/d
2448 /^@endif build-$module-$bootstrap_suffix\$/d"
2449 done
2450 extrasub_host=
2451 for module in ${configdirs} ; do
2452   if test -z "${no_recursion}"; then
2453     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2454       if test -f ${file}; then
2455         echo 1>&2 "*** removing ${file} to force reconfigure"
2456         rm -f ${file}
2457       fi
2458     done
2459   fi
2460   extrasub_host="$extrasub_host
2461 /^@if $module\$/d
2462 /^@endif $module\$/d
2463 /^@if $module-$bootstrap_suffix\$/d
2464 /^@endif $module-$bootstrap_suffix\$/d"
2465 done
2466 extrasub_target=
2467 for module in ${target_configdirs} ; do
2468   if test -z "${no_recursion}" \
2469      && test -f ${target_subdir}/${module}/Makefile; then
2470     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2471     rm -f ${target_subdir}/${module}/Makefile
2472   fi
2473
2474   # We only bootstrap target libraries listed in bootstrap_target_libs.
2475   case $bootstrap_target_libs in
2476     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2477     *) target_bootstrap_suffix=no-bootstrap ;;
2478   esac
2479
2480   extrasub_target="$extrasub_target
2481 /^@if target-$module\$/d
2482 /^@endif target-$module\$/d
2483 /^@if target-$module-$target_bootstrap_suffix\$/d
2484 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2485 done
2486
2487 # Do the final fixup along with target modules.
2488 extrasub_target="$extrasub_target
2489 /^@if /,/^@endif /d"
2490
2491 # Create the serialization dependencies.  This uses a temporary file.
2492
2493 AC_ARG_ENABLE([serial-configure],
2494 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2495                 [force sequential configuration of
2496                  sub-packages for the host, target or build
2497                  machine, or all sub-packages])])
2498
2499 case ${enable_serial_configure} in
2500   yes)
2501     enable_serial_build_configure=yes
2502     enable_serial_host_configure=yes
2503     enable_serial_target_configure=yes
2504     ;;
2505 esac
2506
2507 # These force 'configure's to be done one at a time, to avoid problems
2508 # with contention over a shared config.cache.
2509 rm -f serdep.tmp
2510 echo '# serdep.tmp' > serdep.tmp
2511 olditem=
2512 test "x${enable_serial_build_configure}" = xyes &&
2513 for item in ${build_configdirs} ; do
2514   case ${olditem} in
2515     "") ;;
2516     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2517   esac
2518   olditem=${item}
2519 done
2520 olditem=
2521 test "x${enable_serial_host_configure}" = xyes &&
2522 for item in ${configdirs} ; do
2523   case ${olditem} in
2524     "") ;;
2525     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2526   esac
2527   olditem=${item}
2528 done
2529 olditem=
2530 test "x${enable_serial_target_configure}" = xyes &&
2531 for item in ${target_configdirs} ; do
2532   case ${olditem} in
2533     "") ;;
2534     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2535   esac
2536   olditem=${item}
2537 done
2538 serialization_dependencies=serdep.tmp
2539 AC_SUBST_FILE(serialization_dependencies)
2540
2541 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2542 # target, nonopt, and variable assignments.  These are the ones we
2543 # might not want to pass down to subconfigures.  The exception being
2544 # --cache-file=/dev/null, which is used to turn off the use of cache
2545 # files altogether, and which should be passed on to subconfigures.
2546 # Also strip program-prefix, program-suffix, and program-transform-name,
2547 # so that we can pass down a consistent program-transform-name.
2548 baseargs=
2549 tbaseargs=
2550 keep_next=no
2551 skip_next=no
2552 eval "set -- $ac_configure_args"
2553 for ac_arg
2554 do
2555   if test X"$skip_next" = X"yes"; then
2556     skip_next=no
2557     continue
2558   fi
2559   if test X"$keep_next" = X"yes"; then
2560     case $ac_arg in
2561       *\'*)
2562         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2563     esac
2564     baseargs="$baseargs '$ac_arg'"
2565     tbaseargs="$tbaseargs '$ac_arg'"
2566     keep_next=no
2567     continue
2568   fi
2569
2570   # Handle separated arguments.  Based on the logic generated by
2571   # autoconf 2.59.
2572   case $ac_arg in
2573     *=* | --config-cache | -C | -disable-* | --disable-* \
2574       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2575       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2576       | -with-* | --with-* | -without-* | --without-* | --x)
2577       separate_arg=no
2578       ;;
2579     -*)
2580       separate_arg=yes
2581       ;;
2582     *)
2583       separate_arg=no
2584       ;;
2585   esac
2586
2587   skip_targ=no
2588   case $ac_arg in
2589 changequote(,)
2590   --with-* | --without-*)
2591     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2592
2593     case $libopt in
2594     *[-_]include)
2595       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2596       ;;
2597     *[-_]lib)
2598       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2599       ;;
2600     *)
2601       lib=$libopt
2602       ;;
2603     esac
2604 changequote([,])
2605
2606     case $lib in
2607     mpc | mpfr | gmp | cloog)
2608       # If we're processing --with-$lib, --with-$lib-include or
2609       # --with-$lib-lib, for one of the libs above, and target is
2610       # different from host, don't pass the current argument to any
2611       # target library's configure.
2612       if test x$is_cross_compiler = xyes; then
2613         skip_targ=yes
2614       fi
2615       ;;
2616     esac
2617     ;;
2618   esac
2619
2620   case "$ac_arg" in
2621     --cache-file=/dev/null | \
2622     -cache-file=/dev/null )
2623       # Handled here to avoid the test to skip args below.
2624       baseargs="$baseargs '$ac_arg'"
2625       tbaseargs="$tbaseargs '$ac_arg'"
2626       # Assert: $separate_arg should always be no.
2627       keep_next=$separate_arg
2628       ;;
2629     --no*)
2630       continue
2631       ;;
2632     --c* | \
2633     --sr* | \
2634     --ho* | \
2635     --bu* | \
2636     --t* | \
2637     --program-* | \
2638     -cache_file* | \
2639     -srcdir* | \
2640     -host* | \
2641     -build* | \
2642     -target* | \
2643     -program-prefix* | \
2644     -program-suffix* | \
2645     -program-transform-name* )
2646       skip_next=$separate_arg
2647       continue
2648       ;;
2649     -*)
2650       # An option.  Add it.
2651       case $ac_arg in
2652         *\'*)
2653           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2654       esac
2655       baseargs="$baseargs '$ac_arg'"
2656       if test X"$skip_targ" = Xno; then
2657         tbaseargs="$tbaseargs '$ac_arg'"
2658       fi
2659       keep_next=$separate_arg
2660       ;;
2661     *)
2662       # Either a variable assignment, or a nonopt (triplet).  Don't
2663       # pass it down; let the Makefile handle this.
2664       continue
2665       ;;
2666   esac
2667 done
2668 # Remove the initial space we just introduced and, as these will be
2669 # expanded by make, quote '$'.
2670 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2671
2672 # Add in --program-transform-name, after --program-prefix and
2673 # --program-suffix have been applied to it.  Autoconf has already
2674 # doubled dollar signs and backslashes in program_transform_name; we want
2675 # the backslashes un-doubled, and then the entire thing wrapped in single
2676 # quotes, because this will be expanded first by make and then by the shell.
2677 # Also, because we want to override the logic in subdir configure scripts to
2678 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2679 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2680 ${program_transform_name}
2681 EOF_SED
2682 gcc_transform_name=`cat conftestsed.out`
2683 rm -f conftestsed.out
2684 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2685 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2686 if test "$silent" = yes; then
2687   baseargs="$baseargs --silent"
2688   tbaseargs="$tbaseargs --silent"
2689 fi
2690 baseargs="$baseargs --disable-option-checking"
2691 tbaseargs="$tbaseargs --disable-option-checking"
2692
2693 # Record and document user additions to sub configure arguments.
2694 AC_ARG_VAR([build_configargs],
2695            [additional configure arguments for build directories])
2696 AC_ARG_VAR([host_configargs],
2697            [additional configure arguments for host directories])
2698 AC_ARG_VAR([target_configargs],
2699            [additional configure arguments for target directories])
2700
2701 # For the build-side libraries, we just need to pretend we're native,
2702 # and not use the same cache file.  Multilibs are neither needed nor
2703 # desired.
2704 build_configargs="$build_configargs --cache-file=../config.cache ${baseargs}"
2705
2706 # For host modules, accept cache file option, or specification as blank.
2707 case "${cache_file}" in
2708 "") # empty
2709   cache_file_option="" ;;
2710 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2711   cache_file_option="--cache-file=${cache_file}" ;;
2712 *) # relative path
2713   cache_file_option="--cache-file=../${cache_file}" ;;
2714 esac
2715
2716 # Host dirs don't like to share a cache file either, horribly enough.
2717 # This seems to be due to autoconf 2.5x stupidity.
2718 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2719
2720 target_configargs="$target_configargs ${tbaseargs}"
2721
2722 # Passing a --with-cross-host argument lets the target libraries know
2723 # whether they are being built with a cross-compiler or being built
2724 # native.  However, it would be better to use other mechanisms to make the
2725 # sorts of decisions they want to make on this basis.  Please consider
2726 # this option to be deprecated.  FIXME.
2727 if test x${is_cross_compiler} = xyes ; then
2728   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
2729 fi
2730
2731 # Default to --enable-multilib.
2732 if test x${enable_multilib} = x ; then
2733   target_configargs="--enable-multilib ${target_configargs}"
2734 fi
2735
2736 # Pass --with-newlib if appropriate.  Note that target_configdirs has
2737 # changed from the earlier setting of with_newlib.
2738 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
2739   target_configargs="--with-newlib ${target_configargs}"
2740 fi
2741
2742 # Different target subdirs use different values of certain variables
2743 # (notably CXX).  Worse, multilibs use *lots* of different values.
2744 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
2745 # it doesn't automatically accept command-line overrides of them.
2746 # This means it's not safe for target subdirs to share a cache file,
2747 # which is disgusting, but there you have it.  Hopefully this can be
2748 # fixed in future.  It's still worthwhile to use a cache file for each
2749 # directory.  I think.
2750
2751 # Pass the appropriate --build, --host, --target and --cache-file arguments.
2752 # We need to pass --target, as newer autoconf's requires consistency
2753 # for target_alias and gcc doesn't manage it consistently.
2754 target_configargs="--cache-file=./config.cache ${target_configargs}"
2755
2756 FLAGS_FOR_TARGET=
2757 case " $target_configdirs " in
2758  *" newlib "*)
2759   case " $target_configargs " in
2760   *" --with-newlib "*)
2761    case "$target" in
2762     *-cygwin*)
2763       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'
2764       ;;
2765    esac
2766
2767    # If we're not building GCC, don't discard standard headers.
2768    if test -d ${srcdir}/gcc; then
2769      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
2770
2771      if test "${build}" != "${host}"; then
2772        # On Canadian crosses, CC_FOR_TARGET will have already been set
2773        # by `configure', so we won't have an opportunity to add -Bgcc/
2774        # to it.  This is right: we don't want to search that directory
2775        # for binaries, but we want the header files in there, so add
2776        # them explicitly.
2777        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
2778
2779        # Someone might think of using the pre-installed headers on
2780        # Canadian crosses, in case the installed compiler is not fully
2781        # compatible with the compiler being built.  In this case, it
2782        # would be better to flag an error than risking having
2783        # incompatible object files being constructed.  We can't
2784        # guarantee that an error will be flagged, but let's hope the
2785        # compiler will do it, when presented with incompatible header
2786        # files.
2787      fi
2788    fi
2789
2790    case "${target}-${is_cross_compiler}" in
2791    i[[3456789]]86-*-linux*-no)
2792       # Here host == target, so we don't need to build gcc,
2793       # so we don't want to discard standard headers.
2794       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
2795       ;;
2796    *)
2797       # If we're building newlib, use its generic headers last, but search
2798       # for any libc-related directories first (so make it the last -B
2799       # switch).
2800       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
2801
2802       # If we're building libgloss, find the startup file, simulator library
2803       # and linker script.
2804       case " $target_configdirs " in
2805         *" libgloss "*)
2806         # Look for startup file, simulator library and maybe linker script.
2807         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
2808         # Look for libnosys.a in case the target needs it.
2809         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
2810         # Most targets have the linker script in the source directory.
2811         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
2812         ;;
2813       esac
2814       ;;
2815    esac
2816    ;;
2817   esac
2818   ;;
2819 esac
2820
2821 case "$target" in
2822   x86_64-*mingw* | *-w64-mingw*)
2823   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
2824   # however, use a symlink named 'mingw' in ${prefix} .
2825     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
2826     ;;
2827   *-mingw*)
2828   # MinGW can't be handled as Cygwin above since it does not use newlib.
2829     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
2830     ;;
2831 esac
2832
2833 # Allow the user to override the flags for
2834 # our build compiler if desired.
2835 if test x"${build}" = x"${host}" ; then
2836   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
2837   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
2838   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
2839 fi
2840
2841 # On Canadian crosses, we'll be searching the right directories for
2842 # the previously-installed cross compiler, so don't bother to add
2843 # flags for directories within the install tree of the compiler
2844 # being built; programs in there won't even run.
2845 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
2846   # Search for pre-installed headers if nothing else fits.
2847   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
2848 fi
2849
2850 if test "x${use_gnu_ld}" = x &&
2851    echo " ${configdirs} " | grep " ld " > /dev/null ; then
2852   # Arrange for us to find uninstalled linker scripts.
2853   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
2854 fi
2855
2856 # Search for other target-specific linker scripts and such.
2857 case "${target}" in
2858   mep*)
2859     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
2860     ;;
2861 esac
2862
2863 # Makefile fragments.
2864 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
2865 do
2866   eval fragval=\$$frag
2867   if test $fragval != /dev/null; then
2868     eval $frag=${srcdir}/$fragval
2869   fi
2870 done
2871 AC_SUBST_FILE(host_makefile_frag)
2872 AC_SUBST_FILE(target_makefile_frag)
2873 AC_SUBST_FILE(alphaieee_frag)
2874 AC_SUBST_FILE(ospace_frag)
2875
2876 # Miscellanea: directories, flags, etc.
2877 AC_SUBST(RPATH_ENVVAR)
2878 AC_SUBST(GCC_SHLIB_SUBDIR)
2879 AC_SUBST(tooldir)
2880 AC_SUBST(build_tooldir)
2881 AC_SUBST(CONFIGURE_GDB_TK)
2882 AC_SUBST(GDB_TK)
2883 AC_SUBST(INSTALL_GDB_TK)
2884
2885 # Build module lists & subconfigure args.
2886 AC_SUBST(build_configargs)
2887 AC_SUBST(build_configdirs)
2888
2889 # Host module lists & subconfigure args.
2890 AC_SUBST(host_configargs)
2891 AC_SUBST(configdirs)
2892 AC_SUBST(target_configdirs)
2893
2894 # Target module lists & subconfigure args.
2895 AC_SUBST(target_configargs)
2896
2897
2898 # Build tools.
2899 AC_SUBST(AR_FOR_BUILD)
2900 AC_SUBST(AS_FOR_BUILD)
2901 AC_SUBST(CC_FOR_BUILD)
2902 AC_SUBST(CFLAGS_FOR_BUILD)
2903 AC_SUBST(CXXFLAGS_FOR_BUILD)
2904 AC_SUBST(CXX_FOR_BUILD)
2905 AC_SUBST(DLLTOOL_FOR_BUILD)
2906 AC_SUBST(GCJ_FOR_BUILD)
2907 AC_SUBST(GFORTRAN_FOR_BUILD)
2908 AC_SUBST(GOC_FOR_BUILD)
2909 AC_SUBST(LDFLAGS_FOR_BUILD)
2910 AC_SUBST(LD_FOR_BUILD)
2911 AC_SUBST(NM_FOR_BUILD)
2912 AC_SUBST(RANLIB_FOR_BUILD)
2913 AC_SUBST(WINDMC_FOR_BUILD)
2914 AC_SUBST(WINDRES_FOR_BUILD)
2915
2916 # Generate default definitions for YACC, M4, LEX and other programs that run
2917 # on the build machine.  These are used if the Makefile can't locate these
2918 # programs in objdir.
2919 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
2920
2921 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
2922 case " $build_configdirs " in
2923   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
2924 esac
2925
2926 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
2927 case " $build_configdirs " in
2928   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
2929 esac
2930
2931 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
2932 case " $build_configdirs " in
2933   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
2934 esac
2935
2936 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
2937 case " $build_configdirs " in
2938   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
2939   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
2940 esac
2941
2942 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
2943 case " $build_configdirs " in
2944   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
2945 esac
2946
2947 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
2948 case " $build_configdirs " in
2949   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
2950   *)
2951 changequote(,)
2952     # For an installed makeinfo, we require it to be from texinfo 4.7 or
2953     # higher, else we use the "missing" dummy.
2954     if ${MAKEINFO} --version \
2955        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
2956       :
2957     else
2958       MAKEINFO="$MISSING makeinfo"
2959     fi
2960     ;;
2961 changequote([,])
2962 esac
2963
2964 # FIXME: expect and dejagnu may become build tools?
2965
2966 AC_CHECK_PROGS(EXPECT, expect, expect)
2967 case " $configdirs " in
2968   *" expect "*)
2969     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
2970     ;;
2971 esac
2972
2973 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
2974 case " $configdirs " in
2975   *" dejagnu "*)
2976     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
2977     ;;
2978 esac
2979
2980
2981 # Host tools.
2982 NCN_STRICT_CHECK_TOOLS(AR, ar)
2983 NCN_STRICT_CHECK_TOOLS(AS, as)
2984 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
2985 NCN_STRICT_CHECK_TOOLS(LD, ld)
2986 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
2987 NCN_STRICT_CHECK_TOOLS(NM, nm)
2988 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
2989 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
2990 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
2991 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
2992 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
2993 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
2994 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
2995 AC_SUBST(CC)
2996 AC_SUBST(CXX)
2997 AC_SUBST(CFLAGS)
2998 AC_SUBST(CXXFLAGS)
2999
3000 # Target tools.
3001 AC_ARG_WITH([build-time-tools],
3002   [AS_HELP_STRING([--with-build-time-tools=PATH],
3003                   [use given path to find target tools during the build])],
3004   [case x"$withval" in
3005      x/*) ;;
3006      *)
3007        with_build_time_tools=
3008        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3009        ;;
3010    esac],
3011   [with_build_time_tools=])
3012
3013 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3014 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3015 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3016 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3017 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3018 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3019
3020 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3021 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3022 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3023 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3024 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3025 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3026 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3027 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3028 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3029 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3030 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3031 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3032
3033 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3034
3035 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3036 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3037 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3038 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3039 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3040                 [gcc/g++ -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ `if test -f $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags; then $(SHELL) $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags --build-includes; else echo -funconfigured-libstdc++-v3 ; fi` -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs],
3041                 c++)
3042 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3043                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs],
3044                 c++)
3045 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3046 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3047 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3048                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3049 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3050                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3051 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3052                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3053 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3054 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3055 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3056 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3057 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3058 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3059 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3060 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3061 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3062
3063 AC_SUBST(FLAGS_FOR_TARGET)
3064 AC_SUBST(RAW_CXX_FOR_TARGET)
3065
3066 # Certain tools may need extra flags.
3067 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3068 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3069 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3070
3071 # When building target libraries, except in a Canadian cross, we use
3072 # the same toolchain as the compiler we just built.
3073 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3074 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3075 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3076 if test $host = $build; then
3077   case " $configdirs " in
3078     *" gcc "*)
3079       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3080       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3081       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3082       ;;
3083   esac
3084 fi
3085
3086 AC_SUBST(COMPILER_AS_FOR_TARGET)
3087 AC_SUBST(COMPILER_LD_FOR_TARGET)
3088 AC_SUBST(COMPILER_NM_FOR_TARGET)
3089
3090 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3091 AC_ARG_ENABLE(maintainer-mode,
3092 [AS_HELP_STRING([--enable-maintainer-mode],
3093                 [enable make rules and dependencies not useful
3094                  (and sometimes confusing) to the casual installer])],
3095       USE_MAINTAINER_MODE=$enableval,
3096       USE_MAINTAINER_MODE=no)
3097 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3098 AC_SUBST(MAINTAINER_MODE_TRUE)
3099 AC_SUBST(MAINTAINER_MODE_FALSE)
3100 if test "$USE_MAINTAINER_MODE" = yes; then
3101   MAINTAINER_MODE_TRUE=
3102   MAINTAINER_MODE_FALSE='#'
3103 else
3104   MAINTAINER_MODE_TRUE='#'
3105   MAINTAINER_MODE_FALSE=
3106 fi
3107 MAINT=$MAINTAINER_MODE_TRUE
3108 AC_SUBST(MAINT)dnl
3109
3110 # ---------------------
3111 # GCC bootstrap support
3112 # ---------------------
3113
3114 # Stage specific cflags for build.
3115 stage1_cflags="-g"
3116 case $build in
3117   vax-*-*)
3118     case ${GCC} in
3119       yes) stage1_cflags="-g -Wa,-J" ;;
3120       *) stage1_cflags="-g -J" ;;
3121     esac ;;
3122 esac
3123
3124 AC_SUBST(stage1_cflags)
3125
3126 # Enable --enable-checking in stage1 of the compiler.
3127 AC_ARG_ENABLE(stage1-checking,
3128 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3129                 [choose additional checking for stage1 of the compiler])],
3130 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3131 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3132   stage1_checking=--enable-checking=yes,types
3133 else
3134   stage1_checking=--enable-checking=$enable_checking,types
3135 fi])
3136 AC_SUBST(stage1_checking)
3137
3138 # Enable -Werror in bootstrap stage2 and later.
3139 AC_ARG_ENABLE(werror,
3140 [AS_HELP_STRING([--enable-werror],
3141                 [enable -Werror in bootstrap stage2 and later])], [],
3142 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3143   enable_werror=yes
3144 else
3145   enable_werror=no
3146 fi])
3147 case ${enable_werror} in
3148   yes) stage2_werror_flag="--enable-werror-always" ;;
3149   *) stage2_werror_flag="" ;;
3150 esac
3151 AC_SUBST(stage2_werror_flag)
3152
3153 # Specify what files to not compare during bootstrap.
3154
3155 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3156 case "$target" in
3157   hppa*64*-*-hpux*) ;;
3158   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3159   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3160 esac
3161 AC_SUBST(compare_exclusions)
3162
3163 AC_CONFIG_FILES([Makefile],
3164   [sed "$extrasub_build" Makefile |
3165    sed "$extrasub_host" |
3166    sed "$extrasub_target" > mf$$
3167    mv -f mf$$ Makefile],
3168   [extrasub_build="$extrasub_build"
3169    extrasub_host="$extrasub_host"
3170    extrasub_target="$extrasub_target"])
3171 AC_OUTPUT