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
   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/cloog.m4])
  32
  33 AC_INIT(move-if-change)
  34 AC_PREREQ(2.64)
  35 AC_DISABLE_OPTION_CHECKING
  36
  37 progname=$0
  38 # if PWD already has a value, it is probably wrong.
  39 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  40
  41 # Export original configure arguments for use by sub-configures.
  42 # Quote arguments with shell meta charatcers.
  43 TOPLEVEL_CONFIGURE_ARGUMENTS=
  44 set -- "$progname" "$@"
  45 for ac_arg
  46 do
  47   case "$ac_arg" in
  48   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  49     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  50     # if the argument is of the form -foo=baz, quote the baz part only
  51     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  52   *) ;;
  53   esac
  54   # Add the quoted argument to the list.
  55   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  56 done
  57 if test "$silent" = yes; then
  58   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  59 fi
  60 # Remove the initial space we just introduced and, as these will be
  61 # expanded by make, quote '$'.
  62 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  63 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  64
  65 # Find the build, host, and target systems.
  66 ACX_NONCANONICAL_BUILD
  67 ACX_NONCANONICAL_HOST
  68 ACX_NONCANONICAL_TARGET
  69
  70 dnl Autoconf 2.5x and later will set a default program prefix if
  71 dnl --target was used, even if it was the same as --host.  Disable
  72 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  73 dnl to take effect.
  74 test "$host_noncanonical" = "$target_noncanonical" &&
  75   test "$program_prefix$program_suffix$program_transform_name" = \
  76     NONENONEs,x,x, &&
  77   program_transform_name=s,y,y,
  78
  79 AC_CANONICAL_SYSTEM
  80 AC_ARG_PROGRAM
  81
  82 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  83 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  84
  85 # Get 'install' or 'install-sh' and its variants.
  86 AC_PROG_INSTALL
  87 ACX_PROG_LN
  88 AC_PROG_LN_S
  89 AC_PROG_SED
  90 AC_PROG_AWK
  91
  92 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  93
  94 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  95 # a relative path.
  96 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  97   INSTALL="${srcpwd}/install-sh -c"
  98 fi
  99
 100 # Set srcdir to "." if that's what it is.
 101 # This is important for multilib support.
 102 pwd=`${PWDCMD-pwd}`
 103 if test "${pwd}" = "${srcpwd}" ; then
 104   srcdir=.
 105 fi
 106
 107 topsrcdir=$srcpwd
 108
 109 extra_host_args=
 110
 111 ### To add a new directory to the tree, first choose whether it is a target
 112 ### or a host dependent tool.  Then put it into the appropriate list
 113 ### (library or tools, host or target), doing a dependency sort.
 114
 115 # Subdirs will be configured in the order listed in build_configdirs,
 116 # configdirs, or target_configdirs; see the serialization section below.
 117
 118 # Dependency sorting is only needed when *configuration* must be done in
 119 # a particular order.  In all cases a dependency should be specified in
 120 # the Makefile, whether or not it's implicitly specified here.
 121
 122 # Double entries in build_configdirs, configdirs, or target_configdirs may
 123 # cause circular dependencies and break everything horribly.
 124
 125 # these library is used by various programs built for the build
 126 # environment
 127 #
 128 build_libs="build-libiberty"
 129
 130 # these tools are built for the build environment
 131 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 132
 133 # these libraries are used by various programs built for the host environment
 134 #
 135 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp libdecnumber gmp mpfr mpc ppl cloog libelf libiconv"
 136
 137 # these tools are built for the host environment
 138 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 139 # know that we are building the simulator.
 140 # binutils, gas and ld appear in that order because it makes sense to run
 141 # "make check" in that particular order.
 142 # If --enable-gold is used, "gold" may replace "ld".
 143 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools"
 144
 145 # libgcj represents the runtime libraries only used by gcj.
 146 libgcj="target-libffi \
 147         target-zlib \
 148         target-libjava"
 149
 150 # these libraries are built for the target environment, and are built after
 151 # the host libraries and the host tools (which may be a cross compiler)
 152 # Note that libiberty is not a target library.
 153 target_libraries="target-libgcc \
 154                 target-libgloss \
 155                 target-newlib \
 156                 target-libgomp \
 157                 target-libitm \
 158                 target-libstdc++-v3 \
 159                 target-libmudflap \
 160                 target-libssp \
 161                 target-libquadmath \
 162                 target-libgfortran \
 163                 target-boehm-gc \
 164                 ${libgcj} \
 165                 target-libobjc \
 166                 target-libada \
 167                 target-libgo"
 168
 169 # these tools are built using the target libraries, and are intended to
 170 # run only in the target environment
 171 #
 172 # note: any program that *uses* libraries that are in the "target_libraries"
 173 # list belongs in this list.
 174 #
 175 target_tools="target-rda"
 176
 177 ################################################################################
 178
 179 ## All tools belong in one of the four categories, and are assigned above
 180 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 181 ## is important because configure will choke if they ever get through.
 182 ## ${configdirs} is directories we build using the host tools.
 183 ## ${target_configdirs} is directories we build using the target tools.
 184 configdirs=`echo ${host_libs} ${host_tools}`
 185 target_configdirs=`echo ${target_libraries} ${target_tools}`
 186 build_configdirs=`echo ${build_libs} ${build_tools}`
 187
 188 m4_divert_text([PARSE_ARGS],
 189 [case $srcdir in
 190   *" "*)
 191 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 192     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 193 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 194     ;;
 195 esac
 196 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 197 ])
 198
 199 ################################################################################
 200
 201 srcname="gnu development package"
 202
 203 # This gets set non-empty for some net releases of packages.
 204 appdirs=""
 205
 206 # Define is_cross_compiler to save on calls to 'test'.
 207 is_cross_compiler=
 208 if test x"${host}" = x"${target}" ; then
 209   is_cross_compiler=no
 210 else
 211   is_cross_compiler=yes
 212 fi
 213
 214 # Find the build and target subdir names.
 215 GCC_TOPLEV_SUBDIRS
 216 # Be sure to cover against remnants of an in-tree build.
 217 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 218   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 219 Use a pristine source tree when building in a separate tree])
 220 fi
 221
 222 # Skipdirs are removed silently.
 223 skipdirs=
 224 # Noconfigdirs are removed loudly.
 225 noconfigdirs=""
 226
 227 use_gnu_ld=
 228 # Make sure we don't let GNU ld be added if we didn't want it.
 229 if test x$with_gnu_ld = xno ; then
 230   use_gnu_ld=no
 231   noconfigdirs="$noconfigdirs ld gold"
 232 fi
 233
 234 use_gnu_as=
 235 # Make sure we don't let GNU as be added if we didn't want it.
 236 if test x$with_gnu_as = xno ; then
 237   use_gnu_as=no
 238   noconfigdirs="$noconfigdirs gas"
 239 fi
 240
 241 use_included_zlib=
 242 # Make sure we don't let ZLIB be added if we didn't want it.
 243 if test x$with_system_zlib = xyes ; then
 244   use_included_zlib=no
 245   noconfigdirs="$noconfigdirs zlib"
 246 fi
 247
 248 # some tools are so dependent upon X11 that if we're not building with X,
 249 # it's not even worth trying to configure, much less build, that tool.
 250
 251 case ${with_x} in
 252   yes | "") ;; # the default value for this tree is that X11 is available
 253   no)
 254     skipdirs="${skipdirs} tk itcl libgui"
 255     # We won't be able to build gdbtk without X.
 256     enable_gdbtk=no
 257     ;;
 258   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 259 esac
 260
 261 # Some are only suitable for cross toolchains.
 262 # Remove these if host=target.
 263 cross_only="target-libgloss target-newlib target-opcodes"
 264
 265 case $is_cross_compiler in
 266   no) skipdirs="${skipdirs} ${cross_only}" ;;
 267 esac
 268
 269 # If both --with-headers and --with-libs are specified, default to
 270 # --without-newlib.
 271 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 272    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 273   if test x"${with_newlib}" = x ; then
 274     with_newlib=no
 275   fi
 276 fi
 277
 278 # Recognize --with-newlib/--without-newlib.
 279 case ${with_newlib} in
 280   no) skipdirs="${skipdirs} target-newlib" ;;
 281   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 282 esac
 283
 284 # Handle --enable-gold, --enable-ld.
 285 # --disable-gold [--enable-ld]
 286 #     Build only ld.  Default option.
 287 # --enable-gold [--enable-ld]
 288 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 289 #     as "ld.bfd" and "ld".
 290 # --enable-gold=default [--enable-ld]
 291 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 292 #     install ld as "ld.bfd".
 293 # --enable-gold[=default] --disable-ld
 294 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 295 # --enable-gold --enable-ld=default
 296 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 297 #     and ld.bfd).
 298 #     In other words, ld is default
 299 # --enable-gold=default --enable-ld=default
 300 #     Error.
 301
 302 default_ld=
 303 AC_ARG_ENABLE(gold,
 304 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 305                 [build gold @<:@ARG={default,yes,no}@:>@])],
 306 ENABLE_GOLD=$enableval,
 307 ENABLE_GOLD=no)
 308 case "${ENABLE_GOLD}" in
 309   yes|default)
 310     # Check for ELF target.
 311     is_elf=no
 312     case "${target}" in
 313       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 314       | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 315       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 316       | *-*-solaris2* | *-*-nto*)
 317         case "${target}" in
 318           *-*-linux*aout* | *-*-linux*oldld*)
 319             ;;
 320           *)
 321             is_elf=yes
 322             ;;
 323         esac
 324     esac
 325
 326     if test "$is_elf" = "yes"; then
 327       # Check for target supported by gold.
 328       case "${target}" in
 329         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-*)
 330           configdirs="$configdirs gold"
 331           if test x${ENABLE_GOLD} = xdefault; then
 332             default_ld=gold
 333           fi
 334           ENABLE_GOLD=yes
 335           ;;
 336       esac
 337     fi
 338     ;;
 339   no)
 340     ;;
 341   *)
 342     AC_MSG_ERROR([invalid --enable-gold argument])
 343     ;;
 344 esac
 345
 346 AC_ARG_ENABLE(ld,
 347 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 348                 [build ld @<:@ARG={default,yes,no}@:>@])],
 349 ENABLE_LD=$enableval,
 350 ENABLE_LD=yes)
 351
 352 case "${ENABLE_LD}" in
 353   default)
 354     if test x${default_ld} != x; then
 355       AC_MSG_ERROR([either gold or ld can be the default ld])
 356     fi
 357     ;;
 358   yes)
 359     ;;
 360   no)
 361     if test x${ENABLE_GOLD} != xyes; then
 362       AC_MSG_WARN([neither ld nor gold are enabled])
 363     fi
 364     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 365     ;;
 366   *)
 367     AC_MSG_ERROR([invalid --enable-ld argument])
 368     ;;
 369 esac
 370
 371 # Configure extra directories which are host specific
 372
 373 case "${host}" in
 374   *-cygwin*)
 375     configdirs="$configdirs libtermcap" ;;
 376 esac
 377
 378 # A target can indicate whether a language isn't supported for some reason.
 379 # Only spaces may be used in this macro; not newlines or tabs.
 380 unsupported_languages=
 381
 382 # Remove more programs from consideration, based on the host or
 383 # target this usually means that a port of the program doesn't
 384 # exist yet.
 385
 386 case "${host}" in
 387   i[[3456789]]86-*-msdosdjgpp*)
 388     noconfigdirs="$noconfigdirs tcl tk itcl"
 389     ;;
 390 esac
 391
 392
 393 AC_ARG_ENABLE(libquadmath,
 394 AS_HELP_STRING([--disable-libquadmath],
 395   [do not build libquadmath directory]),
 396 ENABLE_LIBQUADMATH=$enableval,
 397 ENABLE_LIBQUADMATH=yes)
 398 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 399   noconfigdirs="$noconfigdirs target-libquadmath"
 400 fi
 401
 402
 403 AC_ARG_ENABLE(libquadmath-support,
 404 AS_HELP_STRING([--disable-libquadmath-support],
 405   [disable libquadmath support for Fortran]),
 406 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 407 ENABLE_LIBQUADMATH_SUPPORT=yes)
 408 enable_libquadmath_support=
 409 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 410   enable_libquadmath_support=no
 411 fi
 412
 413
 414 AC_ARG_ENABLE(libada,
 415 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 416 ENABLE_LIBADA=$enableval,
 417 ENABLE_LIBADA=yes)
 418 if test "${ENABLE_LIBADA}" != "yes" ; then
 419   noconfigdirs="$noconfigdirs gnattools"
 420 fi
 421
 422 AC_ARG_ENABLE(libssp,
 423 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 424 ENABLE_LIBSSP=$enableval,
 425 ENABLE_LIBSSP=yes)
 426
 427 # Save it here so that, even in case of --enable-libgcj, if the Java
 428 # front-end isn't enabled, we still get libgcj disabled.
 429 libgcj_saved=$libgcj
 430 case $enable_libgcj in
 431 yes)
 432   # If we reset it here, it won't get added to noconfigdirs in the
 433   # target-specific build rules, so it will be forcibly enabled
 434   # (unless the Java language itself isn't enabled).
 435   libgcj=
 436   ;;
 437 no)
 438   # Make sure we get it printed in the list of not supported target libs.
 439   # Don't disable libffi, though, other languages use it.
 440   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 441   # Clear libgcj_saved so that even if java is enabled libffi won't be
 442   # built.
 443   libgcj_saved=
 444   ;;
 445 esac
 446
 447 AC_ARG_ENABLE(static-libjava,
 448 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 449                 [build static libjava @<:@default=no@:>@])],
 450 ENABLE_STATIC_LIBJAVA=$enableval,
 451 ENABLE_STATIC_LIBJAVA=no)
 452 enable_static_libjava=
 453 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 454   enable_static_libjava=yes
 455 fi
 456
 457 if test x$enable_static_libjava != xyes ; then
 458   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 459 fi
 460 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 461
 462 # Disable libmudflap on some systems.
 463 if test x$enable_libmudflap = x ; then
 464     case "${target}" in
 465     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux* | *-*-kopensolaris*-gnu)
 466         # Enable libmudflap by default in GNU and friends.
 467         ;;
 468     *-*-freebsd*)
 469         # Enable libmudflap by default in FreeBSD.
 470         ;;
 471     *)
 472         # Disable it by default everywhere else.
 473         noconfigdirs="$noconfigdirs target-libmudflap"
 474         ;;
 475     esac
 476 fi
 477
 478 # Disable libgomp on non POSIX hosted systems.
 479 if test x$enable_libgomp = x ; then
 480     # Enable libgomp by default on hosted POSIX systems.
 481     case "${target}" in
 482     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 483         ;;
 484     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 485         ;;
 486     *-*-solaris2* | *-*-irix6* | *-*-osf* | *-*-hpux11*)
 487         ;;
 488     *-*-darwin* | *-*-aix*)
 489         ;;
 490     *)
 491         noconfigdirs="$noconfigdirs target-libgomp"
 492         ;;
 493     esac
 494 fi
 495
 496 # Disable libitm on unsupported hosted systems.
 497 if test x$enable_libitm = x; then
 498    AC_MSG_CHECKING([for libitm support])
 499    if (. ${srcdir}/libitm/configure.tgt; test -n "$UNSUPPORTED"); then
 500         AC_MSG_RESULT([no])
 501         noconfigdirs="$noconfigdirs target-libitm"
 502    else
 503         AC_MSG_RESULT([yes])
 504    fi
 505 fi
 506
 507 # Disable libssp for some systems.
 508 case "${target}" in
 509   avr-*-*)
 510     # No hosted I/O support.
 511     noconfigdirs="$noconfigdirs target-libssp"
 512     ;;
 513   powerpc-*-aix* | rs6000-*-aix*)
 514     noconfigdirs="$noconfigdirs target-libssp"
 515     ;;
 516 esac
 517
 518 # Disable libstdc++-v3 for some systems.
 519 case "${target}" in
 520   *-*-vxworks*)
 521     # VxWorks uses the Dinkumware C++ library.
 522     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 523     ;;
 524   arm*-wince-pe*)
 525     # the C++ libraries don't build on top of CE's C libraries
 526     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 527     ;;
 528   avr-*-*)
 529     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 530     ;;
 531 esac
 532
 533 # Disable Fortran for some systems.
 534 case "${target}" in
 535   mmix-*-*)
 536     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 537     unsupported_languages="$unsupported_languages fortran"
 538     ;;
 539 esac
 540
 541 # Disable Java if libffi is not supported.
 542 case "${target}" in
 543   alpha*-*-*)
 544     ;;
 545   arm*-*-*)
 546     ;;
 547   cris-*-*)
 548     ;;
 549   frv-*-*)
 550     ;;
 551   hppa*-*-linux*)
 552     ;;
 553   hppa*-*-hpux*)
 554     ;;
 555   i?86-*-*)
 556     ;;
 557   ia64*-*-*)
 558     ;;
 559   m32r*-*-*)
 560     ;;
 561   m68k-*-*)
 562     ;;
 563   mips-sgi-irix6.* | mips*-*-rtems*)
 564     ;;
 565   mips*-*-linux*)
 566     ;;
 567   powerpc*-*-linux*)
 568     ;;
 569   powerpc-*-darwin*)
 570     ;;
 571   powerpc-*-aix* | rs6000-*-aix*)
 572     ;;
 573   powerpc-*-freebsd*)
 574     ;;
 575   powerpc64-*-freebsd*)
 576     ;;
 577   powerpc*-*-rtems*)
 578     ;;
 579   s390-*-* | s390x-*-*)
 580     ;;
 581   sh-*-* | sh[[34]]*-*-*)
 582     ;;
 583   sh64-*-* | sh5*-*-*)
 584     ;;
 585   sparc*-*-*)
 586     ;;
 587   x86_64-*-*)
 588     ;;
 589   *-*-*)
 590     unsupported_languages="$unsupported_languages java"
 591     ;;
 592 esac
 593
 594 # Disable Java, libgcj or related libraries for some systems.
 595 case "${target}" in
 596   powerpc-*-darwin*)
 597     ;;
 598   i[[3456789]]86-*-darwin*)
 599     ;;
 600   x86_64-*-darwin[[912]]*)
 601     ;;
 602   *-*-darwin*)
 603     noconfigdirs="$noconfigdirs ${libgcj}"
 604     ;;
 605   *-*-netware*)
 606     noconfigdirs="$noconfigdirs ${libgcj}"
 607     ;;
 608   *-*-rtems*)
 609     noconfigdirs="$noconfigdirs ${libgcj}"
 610     ;;
 611   *-*-tpf*)
 612     noconfigdirs="$noconfigdirs ${libgcj}"
 613     ;;
 614   *-*-uclinux*)
 615     noconfigdirs="$noconfigdirs ${libgcj}"
 616     ;;
 617   *-*-vxworks*)
 618     noconfigdirs="$noconfigdirs ${libgcj}"
 619     ;;
 620   alpha*-*-*vms*)
 621     noconfigdirs="$noconfigdirs ${libgcj}"
 622     ;;
 623   arm-wince-pe)
 624     noconfigdirs="$noconfigdirs ${libgcj}"
 625     ;;
 626   arm*-*-symbianelf*)
 627     noconfigdirs="$noconfigdirs ${libgcj}"
 628     ;;
 629   bfin-*-*)
 630     noconfigdirs="$noconfigdirs target-boehm-gc"
 631     ;;
 632   cris-*-* | crisv32-*-*)
 633     unsupported_languages="$unsupported_languages java"
 634     case "${target}" in
 635       *-*-linux*)
 636         ;;
 637       *) # See PR46792 regarding target-libffi.
 638         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 639     esac
 640     ;;
 641   hppa*64*-*-linux*)
 642     # In this case, it's because the hppa64-linux target is for
 643     # the kernel only at this point and has no libc, and thus no
 644     # headers, crt*.o, etc., all of which are needed by these.
 645     unsupported_languages="$unsupported_languages java"
 646     ;;
 647   hppa*64*-*-hpux*)
 648     noconfigdirs="$noconfigdirs ${libgcj}"
 649     ;;
 650   hppa*-hp-hpux11*)
 651     ;;
 652   hppa*-*-hpux*)
 653     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 654     # build on HP-UX 10.20.
 655     noconfigdirs="$noconfigdirs ${libgcj}"
 656     ;;
 657   ia64*-*-*vms*)
 658     noconfigdirs="$noconfigdirs ${libgcj}"
 659     ;;
 660   i[[3456789]]86-w64-mingw*)
 661     noconfigdirs="$noconfigdirs ${libgcj}"
 662     ;;
 663   i[[3456789]]86-*-mingw*)
 664     noconfigdirs="$noconfigdirs ${libgcj}"
 665     ;;
 666   x86_64-*-mingw*)
 667     noconfigdirs="$noconfigdirs ${libgcj}"
 668     ;;
 669   mmix-*-*)
 670     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 671     ;;
 672   powerpc-*-aix*)
 673     # copied from rs6000-*-* entry
 674     noconfigdirs="$noconfigdirs ${libgcj}"
 675     ;;
 676   rs6000-*-aix*)
 677     noconfigdirs="$noconfigdirs ${libgcj}"
 678     ;;
 679   mips*-*-irix6*)
 680     # Linking libjava exceeds command-line length limits on at least
 681     # IRIX 6.2, but not on IRIX 6.5.
 682     # Also, boehm-gc won't build on IRIX 6.5, according to Jeffrey Oldham
 683     # <oldham@codesourcery.com>
 684     noconfigdirs="$noconfigdirs ${libgcj}"
 685     ;;
 686   *-*-lynxos*)
 687     noconfigdirs="$noconfigdirs ${libgcj}"
 688     ;;
 689 esac
 690
 691 # Default libgloss CPU subdirectory.
 692 libgloss_dir="$target_cpu"
 693
 694 case "${target}" in
 695   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 696     libgloss_dir=wince
 697     ;;
 698   arm*-*-*)
 699     libgloss_dir=arm
 700     ;;
 701   cris-*-* | crisv32-*-*)
 702     libgloss_dir=cris
 703     ;;
 704   hppa*-*-*)
 705     libgloss_dir=pa
 706     ;;
 707   i[[3456789]]86-*-*)
 708     libgloss_dir=i386
 709     ;;
 710   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 711     libgloss_dir=m68hc11
 712     ;;
 713   m68*-*-* | fido-*-*)
 714     libgloss_dir=m68k
 715     ;;
 716   mips*-*-*)
 717     libgloss_dir=mips
 718     ;;
 719   powerpc*-*-*)
 720     libgloss_dir=rs6000
 721     ;;
 722   sparc*-*-*)
 723     libgloss_dir=sparc
 724     ;;
 725 esac
 726
 727 # Disable newlib and libgloss for various target OSes.
 728 case "${target}" in
 729   alpha*-dec-osf*)
 730     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 731     ;;
 732   i[[3456789]]86-*-linux*)
 733     # This section makes it possible to build newlib natively on linux.
 734     # If we are using a cross compiler then don't configure newlib.
 735     if test x${is_cross_compiler} != xno ; then
 736       noconfigdirs="$noconfigdirs target-newlib"
 737     fi
 738     noconfigdirs="$noconfigdirs target-libgloss"
 739     # If we are not using a cross compiler, do configure newlib.
 740     # Note however, that newlib will only be configured in this situation
 741     # if the --with-newlib option has been given, because otherwise
 742     # 'target-newlib' will appear in skipdirs.
 743     ;;
 744   i[[3456789]]86-*-rdos*)
 745     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 746     ;;
 747   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 748     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 749     ;;
 750   sparc-*-sunos4*)
 751     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 752     ;;
 753   *-*-aix*)
 754     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 755     ;;
 756   *-*-beos*)
 757     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 758     ;;
 759   *-*-chorusos)
 760     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 761     ;;
 762   *-*-dragonfly*)
 763     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 764     ;;
 765   *-*-freebsd*)
 766     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 767     ;;
 768   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 769     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 770     ;;
 771   *-*-lynxos*)
 772     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 773     ;;
 774   *-*-mingw*)
 775     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 776     ;;
 777   *-*-netbsd*)
 778     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 779     ;;
 780   *-*-netware*)
 781     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 782     ;;
 783   *-*-tpf*)
 784     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 785     ;;
 786   *-*-uclinux*)
 787     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 788     ;;
 789   *-*-vxworks*)
 790     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 791     ;;
 792 esac
 793
 794 case "${target}" in
 795   *-*-chorusos)
 796     ;;
 797   powerpc-*-darwin*)
 798     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 799     noconfigdirs="$noconfigdirs sim target-rda"
 800     ;;
 801   i[[3456789]]86-*-darwin*)
 802     noconfigdirs="$noconfigdirs ld gprof"
 803     noconfigdirs="$noconfigdirs sim target-rda"
 804     ;;
 805   x86_64-*-darwin[[912]]*)
 806     noconfigdirs="$noconfigdirs ld gas gprof"
 807     noconfigdirs="$noconfigdirs sim target-rda"
 808     ;;
 809   *-*-darwin*)
 810     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 811     noconfigdirs="$noconfigdirs sim target-rda"
 812     ;;
 813   *-*-dragonfly*)
 814     ;;
 815   *-*-freebsd*)
 816     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 817         && test -f /usr/local/include/gmp.h; then
 818       with_gmp=/usr/local
 819     fi
 820     ;;
 821   *-*-kaos*)
 822     # Remove unsupported stuff on all kaOS configurations.
 823     noconfigdirs="$noconfigdirs target-libgloss"
 824     ;;
 825   *-*-netbsd*)
 826     ;;
 827   *-*-netware*)
 828     ;;
 829   *-*-rtems*)
 830     noconfigdirs="$noconfigdirs target-libgloss"
 831     ;;
 832     # The tpf target doesn't support gdb yet.
 833   *-*-tpf*)
 834     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 835     ;;
 836   *-*-uclinux*)
 837     noconfigdirs="$noconfigdirs target-rda"
 838     ;;
 839   *-*-vxworks*)
 840     ;;
 841   alpha*-dec-osf*)
 842     # ld works, but does not support shared libraries.
 843     # gas doesn't generate exception information.
 844     noconfigdirs="$noconfigdirs gas ld"
 845     ;;
 846   alpha*-*-*vms*)
 847     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 848     ;;
 849   alpha*-*-*)
 850     # newlib is not 64 bit ready
 851     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 852     ;;
 853   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 854     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 855     ;;
 856   arc-*-*)
 857     noconfigdirs="$noconfigdirs target-libgloss"
 858     ;;
 859   arm-*-pe*)
 860     noconfigdirs="$noconfigdirs target-libgloss"
 861     ;;
 862   arm-*-riscix*)
 863     noconfigdirs="$noconfigdirs ld target-libgloss"
 864     ;;
 865   c4x-*-* | tic4x-*-*)
 866     noconfigdirs="$noconfigdirs target-libgloss"
 867     ;;
 868   tic54x-*-*)
 869     noconfigdirs="$noconfigdirs target-libgloss gdb"
 870     ;;
 871   cr16-*-*)
 872     noconfigdirs="$noconfigdirs gdb"
 873     ;;
 874   d10v-*-*)
 875     noconfigdirs="$noconfigdirs target-libgloss"
 876     ;;
 877   d30v-*-*)
 878     noconfigdirs="$noconfigdirs gdb"
 879     ;;
 880   fr30-*-elf*)
 881     noconfigdirs="$noconfigdirs gdb"
 882     ;;
 883   moxie-*-*)
 884     noconfigdirs="$noconfigdirs gprof"
 885     ;;
 886   h8300*-*-*)
 887     noconfigdirs="$noconfigdirs target-libgloss"
 888     ;;
 889   h8500-*-*)
 890     noconfigdirs="$noconfigdirs target-libgloss"
 891     ;;
 892   hppa1.1-*-osf* | hppa1.1-*-bsd* )
 893     ;;
 894   hppa*64*-*-linux*)
 895     ;;
 896   hppa*-*-linux*)
 897     ;;
 898   hppa*-*-*elf* | \
 899   hppa*-*-lites* | \
 900   hppa*-*-openbsd* | \
 901   hppa*64*-*-*)
 902     ;;
 903   hppa*-hp-hpux11*)
 904     noconfigdirs="$noconfigdirs ld"
 905     ;;
 906   hppa*-*-pro*)
 907     ;;
 908   hppa*-*-*)
 909     noconfigdirs="$noconfigdirs ld"
 910     ;;
 911   i960-*-*)
 912     noconfigdirs="$noconfigdirs gdb"
 913     ;;
 914   ia64*-*-elf*)
 915     # No gdb support yet.
 916     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
 917     ;;
 918   ia64*-**-hpux*)
 919     # No ld support yet.
 920     noconfigdirs="$noconfigdirs libgui itcl ld"
 921     ;;
 922   ia64*-*-*vms*)
 923     # No gdb or ld support yet.
 924     noconfigdirs="$noconfigdirs readline libgui itcl gdb ld"
 925     ;;
 926   i[[3456789]]86-w64-mingw*)
 927     ;;
 928   i[[3456789]]86-*-mingw*)
 929     target_configdirs="$target_configdirs target-winsup"
 930     ;;
 931   *-*-cygwin*)
 932     target_configdirs="$target_configdirs target-libtermcap target-winsup"
 933     noconfigdirs="$noconfigdirs target-libgloss"
 934     # always build newlib if winsup directory is present.
 935     if test -d "$srcdir/winsup/cygwin"; then
 936       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 937     elif test -d "$srcdir/newlib"; then
 938       echo "Warning: winsup/cygwin is missing so newlib can't be built."
 939     fi
 940     ;;
 941   i[[3456789]]86-*-pe)
 942     noconfigdirs="$noconfigdirs target-libgloss"
 943     ;;
 944   i[[3456789]]86-*-sco3.2v5*)
 945     # The linker does not yet know about weak symbols in COFF,
 946     # and is not configured to handle mixed ELF and COFF.
 947     noconfigdirs="$noconfigdirs ld target-libgloss"
 948     ;;
 949   i[[3456789]]86-*-sco*)
 950     noconfigdirs="$noconfigdirs gprof target-libgloss"
 951     ;;
 952   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
 953     noconfigdirs="$noconfigdirs target-libgloss"
 954     ;;
 955   i[[3456789]]86-*-sysv4*)
 956     noconfigdirs="$noconfigdirs target-libgloss"
 957     ;;
 958   i[[3456789]]86-*-beos*)
 959     noconfigdirs="$noconfigdirs gdb"
 960     ;;
 961   i[[3456789]]86-*-rdos*)
 962     noconfigdirs="$noconfigdirs gdb"
 963     ;;
 964   mmix-*-*)
 965     noconfigdirs="$noconfigdirs gdb"
 966     ;;
 967   mt-*-*)
 968     noconfigdirs="$noconfigdirs sim"
 969     ;;
 970   powerpc-*-aix*)
 971     # copied from rs6000-*-* entry
 972     noconfigdirs="$noconfigdirs gprof"
 973     ;;
 974   powerpc*-*-winnt* | powerpc*-*-pe*)
 975     target_configdirs="$target_configdirs target-winsup"
 976     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
 977     # always build newlib.
 978     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 979     ;;
 980     # This is temporary until we can link against shared libraries
 981   powerpcle-*-solaris*)
 982     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
 983     ;;
 984   powerpc-*-beos*)
 985     noconfigdirs="$noconfigdirs gdb"
 986     ;;
 987   rs6000-*-lynxos*)
 988     noconfigdirs="$noconfigdirs gprof"
 989     ;;
 990   rs6000-*-aix*)
 991     noconfigdirs="$noconfigdirs gprof"
 992     ;;
 993   rs6000-*-*)
 994     noconfigdirs="$noconfigdirs gprof"
 995     ;;
 996   m68k-apollo-*)
 997     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
 998     ;;
 999   microblaze*)
1000     noconfigdirs="$noconfigdirs gprof"
1001     ;;
1002   mips*-sde-elf*)
1003     if test x$with_newlib = xyes; then
1004       noconfigdirs="$noconfigdirs gprof"
1005     fi
1006     ;;
1007   mips*-*-irix5*)
1008     noconfigdirs="$noconfigdirs gprof target-libgloss"
1009     ;;
1010   mips*-*-irix6*)
1011     noconfigdirs="$noconfigdirs gprof target-libgloss"
1012     ;;
1013   mips*-*-bsd*)
1014     noconfigdirs="$noconfigdirs gprof target-libgloss"
1015     ;;
1016   mips*-*-linux*)
1017     ;;
1018   mips*-*-*)
1019     noconfigdirs="$noconfigdirs gprof"
1020     ;;
1021   sh-*-* | sh64-*-*)
1022     case "${target}" in
1023       sh*-*-elf)
1024          ;;
1025       *)
1026          noconfigdirs="$noconfigdirs target-libgloss" ;;
1027     esac
1028     ;;
1029   sparc-*-sunos4*)
1030     if test x${is_cross_compiler} = xno ; then
1031            use_gnu_ld=no
1032     fi
1033     ;;
1034   tic6x-*-*)
1035     noconfigdirs="$noconfigdirs sim"
1036     ;;
1037   tilepro-*-* | tilegx-*-*)
1038     noconfigdirs="$noconfigdirs sim"
1039     ;;
1040   v810-*-*)
1041     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1042     ;;
1043   vax-*-*)
1044     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1045     ;;
1046 esac
1047
1048 # If we aren't building newlib, then don't build libgloss, since libgloss
1049 # depends upon some newlib header files.
1050 case "${noconfigdirs}" in
1051   *target-libgloss*) ;;
1052   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1053 esac
1054
1055 # Work in distributions that contain no compiler tools, like Autoconf.
1056 host_makefile_frag=/dev/null
1057 if test -d ${srcdir}/config ; then
1058 case "${host}" in
1059   i[[3456789]]86-*-msdosdjgpp*)
1060     host_makefile_frag="config/mh-djgpp"
1061     ;;
1062   *-cygwin*)
1063     ACX_CHECK_CYGWIN_CAT_WORKS
1064     host_makefile_frag="config/mh-cygwin"
1065     ;;
1066   *-mingw*)
1067     host_makefile_frag="config/mh-mingw"
1068     ;;
1069   *-interix*)
1070     host_makefile_frag="config/mh-interix"
1071     ;;
1072   hppa*-hp-hpux10*)
1073     host_makefile_frag="config/mh-pa-hpux10"
1074     ;;
1075   hppa*-hp-hpux*)
1076     host_makefile_frag="config/mh-pa"
1077     ;;
1078   hppa*-*)
1079     host_makefile_frag="config/mh-pa"
1080     ;;
1081   *-*-darwin*)
1082     host_makefile_frag="config/mh-darwin"
1083     ;;
1084   powerpc-*-aix*)
1085     host_makefile_frag="config/mh-ppc-aix"
1086     ;;
1087   rs6000-*-aix*)
1088     host_makefile_frag="config/mh-ppc-aix"
1089     ;;
1090 esac
1091 fi
1092
1093 if test "${build}" != "${host}" ; then
1094   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1095   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1096   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1097   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1098   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1099   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1100   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1101   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1102   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1103   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1104   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1105   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1106   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1107 else
1108   AR_FOR_BUILD="\$(AR)"
1109   AS_FOR_BUILD="\$(AS)"
1110   CC_FOR_BUILD="\$(CC)"
1111   CXX_FOR_BUILD="\$(CXX)"
1112   GCJ_FOR_BUILD="\$(GCJ)"
1113   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1114   GOC_FOR_BUILD="\$(GOC)"
1115   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1116   LD_FOR_BUILD="\$(LD)"
1117   NM_FOR_BUILD="\$(NM)"
1118   RANLIB_FOR_BUILD="\$(RANLIB)"
1119   WINDRES_FOR_BUILD="\$(WINDRES)"
1120   WINDMC_FOR_BUILD="\$(WINDMC)"
1121 fi
1122
1123 AC_PROG_CC
1124 AC_PROG_CXX
1125
1126 # We must set the default linker to the linker used by gcc for the correct
1127 # operation of libtool.  If LD is not defined and we are using gcc, try to
1128 # set the LD default to the ld used by gcc.
1129 if test -z "$LD"; then
1130   if test "$GCC" = yes; then
1131     case $build in
1132     *-*-mingw*)
1133       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1134     *)
1135       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1136     esac
1137     case $gcc_prog_ld in
1138     # Accept absolute paths.
1139     [[\\/]* | [A-Za-z]:[\\/]*)]
1140       LD="$gcc_prog_ld" ;;
1141     esac
1142   fi
1143 fi
1144
1145 ACX_PROG_GNAT
1146 ACX_PROG_CMP_IGNORE_INITIAL
1147
1148 AC_ARG_ENABLE([bootstrap],
1149 [AS_HELP_STRING([--enable-bootstrap],
1150                 [enable bootstrapping @<:@yes if native build@:>@])],,
1151 enable_bootstrap=default)
1152
1153 # Issue errors and warnings for invalid/strange bootstrap combinations.
1154 if test -r $srcdir/gcc/configure; then
1155   have_compiler=yes
1156 else
1157   have_compiler=no
1158 fi
1159
1160 case "$have_compiler:$host:$target:$enable_bootstrap" in
1161   *:*:*:no) ;;
1162
1163   # Default behavior.  Enable bootstrap if we have a compiler
1164   # and we are in a native configuration.
1165   yes:$build:$build:default)
1166     enable_bootstrap=yes ;;
1167
1168   *:*:*:default)
1169     enable_bootstrap=no ;;
1170
1171   # We have a compiler and we are in a native configuration, bootstrap is ok
1172   yes:$build:$build:yes)
1173     ;;
1174
1175   # Other configurations, but we have a compiler.  Assume the user knows
1176   # what he's doing.
1177   yes:*:*:yes)
1178     AC_MSG_WARN([trying to bootstrap a cross compiler])
1179     ;;
1180
1181   # No compiler: if they passed --enable-bootstrap explicitly, fail
1182   no:*:*:yes)
1183     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1184
1185   # Fail if wrong command line
1186   *)
1187     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1188     ;;
1189 esac
1190
1191 # See if we are building gcc with C++.
1192 AC_ARG_ENABLE(build-with-cxx,
1193 [AS_HELP_STRING([--enable-build-with-cxx],
1194                 [build with C++ compiler instead of C compiler])],
1195 ENABLE_BUILD_WITH_CXX=$enableval,
1196 ENABLE_BUILD_WITH_CXX=no)
1197
1198 # Build stage1 with C and build stages 2 and 3 with C++.
1199 AC_ARG_ENABLE(build-poststage1-with-cxx,
1200 [AS_HELP_STRING([--enable-build-poststage1-with-cxx],
1201                 [build stages 2 and 3 with C++, not C])],
1202 ENABLE_BUILD_POSTSTAGE1_WITH_CXX=$enableval,
1203 ENABLE_BUILD_POSTSTAGE1_WITH_CXX=yes)
1204
1205 # Used for setting $lt_cv_objdir
1206 _LT_CHECK_OBJDIR
1207
1208 # Check for GMP, MPFR and MPC
1209 gmplibs="-lmpc -lmpfr -lgmp"
1210 gmpinc=
1211 have_gmp=no
1212
1213 # Specify a location for mpc
1214 # check for this first so it ends up on the link line before mpfr.
1215 AC_ARG_WITH(mpc,
1216 [AS_HELP_STRING([--with-mpc=PATH],
1217                 [specify prefix directory for installed MPC package.
1218                  Equivalent to --with-mpc-include=PATH/include
1219                  plus --with-mpc-lib=PATH/lib])])
1220 AC_ARG_WITH(mpc-include,
1221 [AS_HELP_STRING([--with-mpc-include=PATH],
1222                 [specify directory for installed MPC include files])])
1223 AC_ARG_WITH(mpc-lib,
1224 [AS_HELP_STRING([--with-mpc-lib=PATH],
1225                 [specify directory for the installed MPC library])])
1226
1227 if test "x$with_mpc" != x; then
1228   gmplibs="-L$with_mpc/lib $gmplibs"
1229   gmpinc="-I$with_mpc/include $gmpinc"
1230 fi
1231 if test "x$with_mpc_include" != x; then
1232   gmpinc="-I$with_mpc_include $gmpinc"
1233 fi
1234 if test "x$with_mpc_lib" != x; then
1235   gmplibs="-L$with_mpc_lib $gmplibs"
1236 fi
1237 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1238   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1239   gmpinc='-I$$s/mpc/src '"$gmpinc"
1240   # Do not test the mpc version.  Assume that it is sufficient, since
1241   # it is in the source tree, and the library has not been built yet
1242   # but it would be included on the link line in the version check below
1243   # hence making the test fail.
1244   have_gmp=yes
1245 fi
1246
1247 # Specify a location for mpfr
1248 # check for this first so it ends up on the link line before gmp.
1249 AC_ARG_WITH(mpfr-dir,
1250 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1251 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1252 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1253
1254 AC_ARG_WITH(mpfr,
1255 [AS_HELP_STRING([--with-mpfr=PATH],
1256                 [specify prefix directory for installed MPFR package.
1257                  Equivalent to --with-mpfr-include=PATH/include
1258                  plus --with-mpfr-lib=PATH/lib])])
1259 AC_ARG_WITH(mpfr-include,
1260 [AS_HELP_STRING([--with-mpfr-include=PATH],
1261                 [specify directory for installed MPFR include files])])
1262 AC_ARG_WITH(mpfr-lib,
1263 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1264                 [specify directory for the installed MPFR library])])
1265
1266 if test "x$with_mpfr" != x; then
1267   gmplibs="-L$with_mpfr/lib $gmplibs"
1268   gmpinc="-I$with_mpfr/include $gmpinc"
1269 fi
1270 if test "x$with_mpfr_include" != x; then
1271   gmpinc="-I$with_mpfr_include $gmpinc"
1272 fi
1273 if test "x$with_mpfr_lib" != x; then
1274   gmplibs="-L$with_mpfr_lib $gmplibs"
1275 fi
1276 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1277   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1278   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1279   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1280   # Do not test the mpfr version.  Assume that it is sufficient, since
1281   # it is in the source tree, and the library has not been built yet
1282   # but it would be included on the link line in the version check below
1283   # hence making the test fail.
1284   have_gmp=yes
1285 fi
1286
1287 # Specify a location for gmp
1288 AC_ARG_WITH(gmp-dir,
1289 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1290 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1291 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1292
1293 AC_ARG_WITH(gmp,
1294 [AS_HELP_STRING([--with-gmp=PATH],
1295                 [specify prefix directory for the installed GMP package.
1296                  Equivalent to --with-gmp-include=PATH/include
1297                  plus --with-gmp-lib=PATH/lib])])
1298 AC_ARG_WITH(gmp-include,
1299 [AS_HELP_STRING([--with-gmp-include=PATH],
1300                 [specify directory for installed GMP include files])])
1301 AC_ARG_WITH(gmp-lib,
1302 [AS_HELP_STRING([--with-gmp-lib=PATH],
1303                 [specify directory for the installed GMP library])])
1304
1305
1306 if test "x$with_gmp" != x; then
1307   gmplibs="-L$with_gmp/lib $gmplibs"
1308   gmpinc="-I$with_gmp/include $gmpinc"
1309 fi
1310 if test "x$with_gmp_include" != x; then
1311   gmpinc="-I$with_gmp_include $gmpinc"
1312 fi
1313 if test "x$with_gmp_lib" != x; then
1314   gmplibs="-L$with_gmp_lib $gmplibs"
1315 fi
1316 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1317   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1318   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1319   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1320   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1321   # Do not test the gmp version.  Assume that it is sufficient, since
1322   # it is in the source tree, and the library has not been built yet
1323   # but it would be included on the link line in the version check below
1324   # hence making the test fail.
1325   have_gmp=yes
1326 fi
1327
1328 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1329   have_gmp=yes
1330   saved_CFLAGS="$CFLAGS"
1331   CFLAGS="$CFLAGS $gmpinc"
1332   # Check for the recommended and required versions of GMP.
1333   AC_MSG_CHECKING([for the correct version of gmp.h])
1334   AC_TRY_COMPILE([#include "gmp.h"],[
1335   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1336   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1337   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,0)
1338   choke me
1339   #endif
1340   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1341   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1342   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1343   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1344   choke me
1345   #endif
1346   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1347    [AC_MSG_RESULT([no]); have_gmp=no])
1348
1349   # If we have GMP, check the MPFR version.
1350   if test x"$have_gmp" = xyes; then
1351     # Check for the recommended and required versions of MPFR.
1352     AC_MSG_CHECKING([for the correct version of mpfr.h])
1353     AC_TRY_COMPILE([#include <gmp.h>
1354     #include <mpfr.h>],[
1355     #if MPFR_VERSION < MPFR_VERSION_NUM(2,3,1)
1356     choke me
1357     #endif
1358     ], [AC_TRY_COMPILE([#include <gmp.h>
1359     #include <mpfr.h>],[
1360     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1361     choke me
1362     #endif
1363     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1364      [AC_MSG_RESULT([no]); have_gmp=no])
1365   fi
1366
1367   # Check for the MPC header version.
1368   if test x"$have_gmp" = xyes ; then
1369     # Check for the recommended and required versions of MPC.
1370     AC_MSG_CHECKING([for the correct version of mpc.h])
1371     AC_TRY_COMPILE([#include <mpc.h>],[
1372     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1373     choke me
1374     #endif
1375     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1376     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1377     choke me
1378     #endif
1379     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1380      [AC_MSG_RESULT([no]); have_gmp=no])
1381   fi
1382
1383   # Now check the MPFR library.
1384   if test x"$have_gmp" = xyes; then
1385     saved_LIBS="$LIBS"
1386     LIBS="$LIBS $gmplibs"
1387     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1388     AC_TRY_LINK([#include <mpc.h>],[
1389     mpfr_t n;
1390     mpfr_t x;
1391     mpc_t c;
1392     int t;
1393     mpfr_init (n);
1394     mpfr_init (x);
1395     mpfr_atan2 (n, n, x, GMP_RNDN);
1396     mpfr_erfc (n, x, GMP_RNDN);
1397     mpfr_subnormalize (x, t, GMP_RNDN);
1398     mpfr_clear(n);
1399     mpfr_clear(x);
1400     mpc_init2 (c, 53);
1401     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1402     mpc_cosh (c, c, MPC_RNDNN);
1403     mpc_pow (c, c, c, MPC_RNDNN);
1404     mpc_acosh (c, c, MPC_RNDNN);
1405     mpc_clear (c);
1406     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1407     LIBS="$saved_LIBS"
1408   fi
1409
1410   CFLAGS="$saved_CFLAGS"
1411
1412 # The library versions listed in the error message below should match
1413 # the HARD-minimums enforced above.
1414   if test x$have_gmp != xyes; then
1415     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+.
1416 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1417 their locations.  Source code for these libraries can be found at
1418 their respective hosting sites as well as at
1419 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1420 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1421 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1422 make sure that you have installed both the libraries and the header
1423 files.  They may be located in separate packages.])
1424   fi
1425 fi
1426
1427 # Flags needed for both GMP, MPFR and/or MPC.
1428 AC_SUBST(gmplibs)
1429 AC_SUBST(gmpinc)
1430 AC_SUBST(extra_mpfr_configure_flags)
1431 AC_SUBST(extra_mpc_gmp_configure_flags)
1432 AC_SUBST(extra_mpc_mpfr_configure_flags)
1433
1434 # Allow host libstdc++ to be specified for static linking with PPL.
1435 AC_ARG_WITH(host-libstdcxx,
1436 [AS_HELP_STRING([--with-host-libstdcxx=L],
1437                 [use linker arguments L to link with libstdc++
1438                  when linking with PPL])])
1439
1440 case $with_host_libstdcxx in
1441   no|yes)
1442     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1443     ;;
1444 esac
1445
1446 # Linker flags to use for stage1 or when not boostrapping.
1447 AC_ARG_WITH(stage1-ldflags,
1448 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1449 [if test "$withval" = "no" -o "$withval" = "yes"; then
1450    stage1_ldflags=
1451  else
1452    stage1_ldflags=$withval
1453  fi],
1454 [stage1_ldflags=])
1455 AC_SUBST(stage1_ldflags)
1456
1457 # Libraries to use for stage1 or when not bootstrapping.
1458 AC_ARG_WITH(stage1-libs,
1459 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1460 [if test "$withval" = "no" -o "$withval" = "yes"; then
1461    stage1_libs=
1462  else
1463    stage1_libs=$withval
1464  fi],
1465 [stage1_libs=$with_host_libstdcxx])
1466 AC_SUBST(stage1_libs)
1467
1468 # Libraries to use for stage2 and later builds.  This defaults to the
1469 # argument passed to --with-host-libstdcxx.
1470 AC_ARG_WITH(boot-libs,
1471 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1472 [if test "$withval" = "no" -o "$withval" = "yes"; then
1473    poststage1_libs=
1474  else
1475    poststage1_libs=$withval
1476  fi],
1477 [poststage1_libs=$with_host_libstdcxx])
1478 AC_SUBST(poststage1_libs)
1479
1480 # Linker flags to use for stage2 and later builds.
1481 AC_ARG_WITH(boot-ldflags,
1482 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1483                 [linker flags for stage2 and later])],
1484 [if test "$withval" = "no" -o "$withval" = "yes"; then
1485    poststage1_ldflags=
1486  else
1487    poststage1_ldflags=$withval
1488  fi],
1489 [poststage1_ldflags=
1490  # In stages 2 and 3, default to linking libstdc++ and libgcc
1491  # statically.  But if the user explicitly specified the libraries to
1492  # use, trust that they are doing what they want.
1493  if test "$poststage1_libs" = ""; then
1494    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1495  fi])
1496 AC_SUBST(poststage1_ldflags)
1497
1498 # Check for PPL
1499 ppllibs=
1500 pplinc=
1501 pwllib=
1502
1503 AC_ARG_WITH(ppl,
1504 [AS_HELP_STRING([--with-ppl=PATH],
1505                 [specify prefix directory for the installed PPL package.
1506                  Equivalent to --with-ppl-include=PATH/include
1507                  plus --with-ppl-lib=PATH/lib])])
1508 AC_ARG_WITH(ppl-include,
1509 [AS_HELP_STRING([--with-ppl-include=PATH],
1510                 [specify directory for installed PPL include files])])
1511 AC_ARG_WITH(ppl-lib,
1512 [AS_HELP_STRING([--with-ppl-lib=PATH],
1513                 [specify directory for the installed PPL library])])
1514
1515 AC_ARG_ENABLE(ppl-version-check,
1516 [AS_HELP_STRING([--disable-ppl-version-check],
1517                 [disable check for PPL version])])
1518
1519 case $with_ppl in
1520   yes | no | "")
1521     ;;
1522   *)
1523     ppllibs="-L$with_ppl/lib"
1524     pplinc="-I$with_ppl/include $pplinc"
1525     if test -d "$with_ppl/lib" && test -d "$with_ppl/include"; then
1526       with_ppl=yes
1527     else
1528       AC_MSG_ERROR([cannot find directories "$with_ppl/lib" or "$with_ppl/include"])
1529     fi
1530     ;;
1531 esac
1532
1533 if test x"$with_ppl_include" != x; then
1534   pplinc="-I$with_ppl_include $pplinc"
1535   with_ppl=yes
1536 fi
1537
1538 if test "x$with_ppl_lib" != x; then
1539   ppllibs="-L$with_ppl_lib"
1540   with_ppl=yes
1541 fi
1542
1543 if test x"$with_ppl$with_ppl_include$with_ppl_lib" = x && test -d ${srcdir}/ppl; then
1544   if test x"$enable_watchdog" = xyes; then
1545     pwllib="-lpwl"
1546   fi
1547   ppllibs='-L$$r/$(HOST_SUBDIR)/ppl/interfaces/C/'"$lt_cv_objdir"' -L$$r/$(HOST_SUBDIR)/ppl/src/'"$lt_cv_objdir"
1548   pplinc='-I$$r/$(HOST_SUBDIR)/ppl/src -I$$r/$(HOST_SUBDIR)/ppl/interfaces/C '
1549   enable_ppl_version_check=no
1550   with_ppl=yes
1551 fi
1552
1553 if test "x$with_ppl" != xno; then
1554   if test "x$pwllib" = x; then
1555     saved_LIBS="$LIBS"
1556     LIBS="$LIBS $ppllibs -lstdc++ -lm"
1557     AC_CHECK_LIB(pwl, PWL_handle_timeout, [pwllib="-lpwl"])
1558     LIBS="$saved_LIBS"
1559   fi
1560
1561   ppllibs="$ppllibs -lppl_c -lppl $pwllib -lgmpxx"
1562
1563   if test "$enable_ppl_version_check" != no; then
1564     saved_CFLAGS="$CFLAGS"
1565     CFLAGS="$CFLAGS $pplinc $gmpinc"
1566     AC_MSG_CHECKING([for version 0.11 (revision 0 or later) of PPL])
1567     AC_TRY_COMPILE([#include "ppl_c.h"],[
1568     #if PPL_VERSION_MAJOR != 0 || PPL_VERSION_MINOR < 11
1569     choke me
1570     #endif
1571     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); ppllibs= ; pplinc= ; with_ppl=no ])
1572     CFLAGS="$saved_CFLAGS"
1573   fi
1574 fi
1575
1576 # Flags needed for PPL
1577 AC_SUBST(ppllibs)
1578 AC_SUBST(pplinc)
1579
1580
1581 # Check for CLOOG
1582
1583 dnl Provide configure switches and initialize clooginc & clooglibs
1584 dnl with user input.
1585 CLOOG_INIT_FLAGS
1586 if test "x$with_ppl" = "xno"; then
1587   dnl Only execute fail-action, if CLooG has been requested.
1588   CLOOG_REQUESTED([graphite_requested=yes], [graphite_requested=no])
1589   if test "${graphite_requested}" = yes; then
1590     AC_MSG_ERROR([Unable to find a usable PPL.  See config.log for details.])
1591   fi
1592   with_cloog=no
1593 fi
1594 if test "x${with_cloog}" = x && test "x${with_cloog_include}" = x \
1595   && test "x${with_cloog_lib}" = x && test -d ${srcdir}/cloog; then
1596   clooglibs='-L$$r/$(HOST_SUBDIR)/cloog/'"$lt_cv_objdir"' '
1597   clooginc='-I$$r/$(HOST_SUBDIR)/cloog/include -I$$s/cloog/include '
1598 fi
1599 if test "x$with_cloog" != "xno"; then
1600   dnl The minimal version of CLooG required for Graphite.
1601   dnl
1602   dnl If we use CLooG-Legacy, the provided version information is
1603   dnl ignored.
1604   CLOOG_CHECK_VERSION(0,16,1)
1605
1606   dnl Only execute fail-action, if CLooG has been requested.
1607   CLOOG_IF_FAILED([
1608     AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
1609 fi
1610
1611 # Check for LTO support.
1612 AC_ARG_ENABLE(lto,
1613 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1614 enable_lto=$enableval,
1615 enable_lto=yes; default_enable_lto=yes)
1616
1617 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1618   build_lto_plugin=yes
1619 ],[if test x"$default_enable_lto" = x"yes" ; then
1620     case $target in
1621       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1622       # On other non-ELF platforms, LTO has yet to be validated.
1623       *) enable_lto=no ;;
1624     esac
1625   else
1626   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1627   # It would also be nice to check the binutils support, but we don't
1628   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1629   # warn during gcc/ subconfigure; unless you're bootstrapping with
1630   # -flto it won't be needed until after installation anyway.
1631     case $target in
1632       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1633       *) if test x"$enable_lto" = x"yes"; then
1634         AC_MSG_ERROR([LTO support is not enabled for this target.])
1635         fi
1636       ;;
1637     esac
1638   fi
1639   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1640   # Build it unless LTO was explicitly disabled.
1641   case $target in
1642     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1643     *) ;;
1644   esac
1645 ])
1646
1647
1648 # By default, C is the only stage 1 language.
1649 stage1_languages=,c,
1650
1651 # Target libraries that we bootstrap.
1652 bootstrap_target_libs=,target-libgcc,
1653
1654 # Figure out what language subdirectories are present.
1655 # Look if the user specified --enable-languages="..."; if not, use
1656 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1657 # go away some day.
1658 # NB:  embedded tabs in this IF block -- do not untabify
1659 if test -d ${srcdir}/gcc; then
1660   if test x"${enable_languages+set}" != xset; then
1661     if test x"${LANGUAGES+set}" = xset; then
1662       enable_languages="${LANGUAGES}"
1663         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1664     else
1665       enable_languages=all
1666     fi
1667   else
1668     if test x"${enable_languages}" = x ||
1669        test x"${enable_languages}" = xyes;
1670        then
1671       echo configure.in: --enable-languages needs at least one language argument 1>&2
1672       exit 1
1673     fi
1674   fi
1675   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1676
1677   # 'f95' is the old name for the 'fortran' language. We issue a warning
1678   # and make the substitution.
1679   case ,${enable_languages}, in
1680     *,f95,*)
1681       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1682       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1683       ;;
1684   esac
1685
1686   # If bootstrapping, then using --enable-build-with-cxx or
1687   # --enable-build-poststage1-with-cxx requires enabling C++.
1688   case ",$enable_languages,:,$ENABLE_BUILD_WITH_CXX,$ENABLE_BUILD_POSTSTAGE1_WITH_CXX,:$enable_bootstrap" in
1689     *,c++,*:*:*) ;;
1690     *:*,yes,*:yes)
1691       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1692         enable_languages="${enable_languages},c++"
1693       else
1694         AC_MSG_ERROR([bootstrapping with --enable-build-with-cxx or --enable-build-poststage1-with-cxx requires c++ sources])
1695       fi
1696       ;;
1697   esac
1698
1699   # First scan to see if an enabled language requires some other language.
1700   # We assume that a given config-lang.in will list all the language
1701   # front ends it requires, even if some are required indirectly.
1702   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1703     case ${lang_frag} in
1704       ..) ;;
1705       # The odd quoting in the next line works around
1706       # an apparent bug in bash 1.12 on linux.
1707       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1708       *)
1709         # From the config-lang.in, get $language, $lang_requires, and
1710         # $lang_requires_boot_languages.
1711         language=
1712         lang_requires=
1713         lang_requires_boot_languages=
1714         . ${lang_frag}
1715         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1716           case ,${enable_languages}, in
1717             *,$other,*) ;;
1718             *,all,*) ;;
1719             *,$language,*)
1720               echo " \`$other' language required by \`$language'; enabling" 1>&2
1721               enable_languages="${enable_languages},${other}"
1722               ;;
1723           esac
1724         done
1725         for other in ${lang_requires_boot_languages} ; do
1726           if test "$other" != "c"; then
1727             case ,${enable_stage1_languages}, in
1728               *,$other,*) ;;
1729               *,all,*) ;;
1730               *)
1731                 case ,${enable_languages}, in
1732                   *,$language,*)
1733                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1734                     enable_stage1_languages="$enable_stage1_languages,${other}"
1735                     ;;
1736                 esac
1737                 ;;
1738             esac
1739           fi
1740         done
1741         ;;
1742     esac
1743   done
1744
1745   new_enable_languages=,c,
1746
1747   # If LTO is enabled, add the LTO front end.
1748   extra_host_libiberty_configure_flags=
1749   if test "$enable_lto" = "yes" ; then
1750     case ,${enable_languages}, in
1751       *,lto,*) ;;
1752       *) enable_languages="${enable_languages},lto" ;;
1753     esac
1754     if test "${build_lto_plugin}" = "yes" ; then
1755       configdirs="$configdirs lto-plugin"
1756       extra_host_libiberty_configure_flags=--enable-shared
1757     fi
1758   fi
1759   AC_SUBST(extra_host_libiberty_configure_flags)
1760
1761   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1762   potential_languages=,c,
1763
1764   enabled_target_libs=
1765   disabled_target_libs=
1766
1767   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1768     case ${lang_frag} in
1769       ..) ;;
1770       # The odd quoting in the next line works around
1771       # an apparent bug in bash 1.12 on linux.
1772       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1773       *)
1774         # From the config-lang.in, get $language, $target_libs,
1775         # $lang_dirs, $boot_language, and $build_by_default
1776         language=
1777         target_libs=
1778         lang_dirs=
1779         subdir_requires=
1780         boot_language=no
1781         build_by_default=yes
1782         . ${lang_frag}
1783         if test x${language} = x; then
1784           echo "${lang_frag} doesn't set \$language." 1>&2
1785           exit 1
1786         fi
1787
1788         if test "$language" = "c++"; then
1789           if test "$ENABLE_BUILD_WITH_CXX" = "yes" \
1790              || test "$ENABLE_BUILD_POSTSTAGE1_WITH_CXX" = "yes"; then
1791             boot_language=yes
1792           fi
1793         fi
1794
1795         case ,${enable_languages}, in
1796           *,${language},*)
1797             # Language was explicitly selected; include it.
1798             add_this_lang=yes
1799             ;;
1800           *,all,*)
1801             # 'all' was selected, select it if it is a default language
1802             add_this_lang=${build_by_default}
1803             ;;
1804           *)
1805             add_this_lang=no
1806             ;;
1807         esac
1808
1809         # Disable languages that need other directories if these aren't available.
1810         for i in $subdir_requires; do
1811           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1812           case ,${enable_languages}, in
1813             *,${language},*)
1814               # Specifically requested language; tell them.
1815               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1816               ;;
1817             *)
1818               # Silently disable.
1819               add_this_lang=unsupported
1820               ;;
1821           esac
1822         done
1823
1824         # Disable Ada if no preexisting GNAT is available.
1825         case ,${enable_languages},:${language}:${have_gnat} in
1826           *,${language},*:ada:no)
1827             # Specifically requested language; tell them.
1828             AC_MSG_ERROR([GNAT is required to build $language])
1829             ;;
1830           *:ada:no)
1831             # Silently disable.
1832             add_this_lang=unsupported
1833             ;;
1834         esac
1835
1836         # Disable a language that is unsupported by the target.
1837         case " $unsupported_languages " in
1838           *" $language "*)
1839             add_this_lang=unsupported
1840             ;;
1841         esac
1842
1843         case $add_this_lang in
1844           unsupported)
1845             # Remove language-dependent dirs.
1846             disabled_target_libs="$disabled_target_libs $target_libs"
1847             noconfigdirs="$noconfigdirs $lang_dirs"
1848             ;;
1849           no)
1850             # Remove language-dependent dirs; still show language as supported.
1851             disabled_target_libs="$disabled_target_libs $target_libs"
1852             noconfigdirs="$noconfigdirs $lang_dirs"
1853             potential_languages="${potential_languages}${language},"
1854             ;;
1855           yes)
1856             new_enable_languages="${new_enable_languages}${language},"
1857             potential_languages="${potential_languages}${language},"
1858             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1859             enabled_target_libs="$enabled_target_libs $target_libs"
1860             case "${boot_language}:,$enable_stage1_languages," in
1861               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1862                 # Add to (comma-separated) list of stage 1 languages.
1863                 case ",$stage1_languages," in
1864                   *,$language,* | ,yes, | ,all,) ;;
1865                   *) stage1_languages="${stage1_languages}${language}," ;;
1866                 esac
1867                 # We need to bootstrap any supporting libraries.
1868                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1869                 ;;
1870             esac
1871             ;;
1872         esac
1873         ;;
1874     esac
1875   done
1876
1877   # Add target libraries which are only needed for disabled languages
1878   # to noconfigdirs.
1879   if test -n "$disabled_target_libs"; then
1880     for dir in $disabled_target_libs; do
1881       case " $enabled_target_libs " in
1882       *" ${dir} "*) ;;
1883       *) noconfigdirs="$noconfigdirs $dir" ;;
1884       esac
1885     done
1886   fi
1887
1888   AC_ARG_ENABLE(stage1-languages,
1889   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1890                   [choose additional languages to build during
1891                   stage1.  Mostly useful for compiler development])],
1892   [case ,${enable_stage1_languages}, in
1893     ,no,|,,)
1894       # Set it to something that will have no effect in the loop below
1895       enable_stage1_languages=c ;;
1896     ,yes,)
1897       enable_stage1_languages=`echo $new_enable_languages | \
1898         sed -e "s/^,//" -e "s/,$//" ` ;;
1899     *,all,*)
1900       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
1901         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
1902   esac
1903
1904   # Add "good" languages from enable_stage1_languages to stage1_languages,
1905   # while "bad" languages go in missing_languages.  Leave no duplicates.
1906   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
1907     case $potential_languages in
1908       *,$i,*)
1909         case $stage1_languages in
1910           *,$i,*) ;;
1911           *) stage1_languages="$stage1_languages$i," ;;
1912         esac ;;
1913       *)
1914         case $missing_languages in
1915           *,$i,*) ;;
1916           *) missing_languages="$missing_languages$i," ;;
1917         esac ;;
1918      esac
1919   done])
1920
1921   # Remove leading/trailing commas that were added for simplicity
1922   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
1923   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
1924   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
1925   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
1926
1927   if test "x$missing_languages" != x; then
1928     AC_MSG_ERROR([
1929 The following requested languages could not be built: ${missing_languages}
1930 Supported languages are: ${potential_languages}])
1931   fi
1932   if test "x$new_enable_languages" != "x$enable_languages"; then
1933     echo The following languages will be built: ${new_enable_languages}
1934     enable_languages="$new_enable_languages"
1935   fi
1936
1937   AC_SUBST(stage1_languages)
1938   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
1939 fi
1940
1941 # Handle --disable-<component> generically.
1942 for dir in $configdirs $build_configdirs $target_configdirs ; do
1943   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
1944   varname=`echo $dirname | sed -e s/+/_/g`
1945   if eval test x\${enable_${varname}} "=" xno ; then
1946     noconfigdirs="$noconfigdirs $dir"
1947   fi
1948 done
1949
1950 # Check for Boehm's garbage collector
1951 AC_ARG_ENABLE(objc-gc,
1952 [AS_HELP_STRING([--enable-objc-gc],
1953                 [enable use of Boehm's garbage collector with the
1954                  GNU Objective-C runtime])],
1955 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
1956   *,objc,*:*:yes:*target-boehm-gc*)
1957     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
1958     ;;
1959 esac])
1960
1961 # Make sure we only build Boehm's garbage collector if required.
1962 case ,${enable_languages},:${enable_objc_gc} in
1963   *,objc,*:yes)
1964     # Keep target-boehm-gc if requested for Objective-C.
1965     ;;
1966   *)
1967     # Otherwise remove target-boehm-gc depending on target-libjava.
1968     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
1969       noconfigdirs="$noconfigdirs target-boehm-gc"
1970     fi
1971     ;;
1972 esac
1973
1974 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
1975 # $build_configdirs and $target_configdirs.
1976 # If we have the source for $noconfigdirs entries, add them to $notsupp.
1977
1978 notsupp=""
1979 for dir in . $skipdirs $noconfigdirs ; do
1980   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
1981   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1982     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
1983     if test -r $srcdir/$dirname/configure ; then
1984       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1985         true
1986       else
1987         notsupp="$notsupp $dir"
1988       fi
1989     fi
1990   fi
1991   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1992     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
1993     if test -r $srcdir/$dirname/configure ; then
1994       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1995         true
1996       else
1997         notsupp="$notsupp $dir"
1998       fi
1999     fi
2000   fi
2001   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2002     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2003     if test -r $srcdir/$dirname/configure ; then
2004       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2005         true
2006       else
2007         notsupp="$notsupp $dir"
2008       fi
2009     fi
2010   fi
2011 done
2012
2013 # Quietly strip out all directories which aren't configurable in this tree.
2014 # This relies on all configurable subdirectories being autoconfiscated, which
2015 # is now the case.
2016 build_configdirs_all="$build_configdirs"
2017 build_configdirs=
2018 for i in ${build_configdirs_all} ; do
2019   j=`echo $i | sed -e s/build-//g`
2020   if test -f ${srcdir}/$j/configure ; then
2021     build_configdirs="${build_configdirs} $i"
2022   fi
2023 done
2024
2025 configdirs_all="$configdirs"
2026 configdirs=
2027 for i in ${configdirs_all} ; do
2028   if test -f ${srcdir}/$i/configure ; then
2029     configdirs="${configdirs} $i"
2030   fi
2031 done
2032
2033 target_configdirs_all="$target_configdirs"
2034 target_configdirs=
2035 for i in ${target_configdirs_all} ; do
2036   j=`echo $i | sed -e s/target-//g`
2037   if test -f ${srcdir}/$j/configure ; then
2038     target_configdirs="${target_configdirs} $i"
2039   fi
2040 done
2041
2042 # Produce a warning message for the subdirs we can't configure.
2043 # This isn't especially interesting in the Cygnus tree, but in the individual
2044 # FSF releases, it's important to let people know when their machine isn't
2045 # supported by the one or two programs in a package.
2046
2047 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2048   # If $appdirs is non-empty, at least one of those directories must still
2049   # be configured, or we error out.  (E.g., if the gas release supports a
2050   # specified target in some subdirs but not the gas subdir, we shouldn't
2051   # pretend that all is well.)
2052   if test -n "$appdirs" ; then
2053     for dir in $appdirs ; do
2054       if test -r $dir/Makefile.in ; then
2055         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2056           appdirs=""
2057           break
2058         fi
2059         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2060           appdirs=""
2061           break
2062         fi
2063       fi
2064     done
2065     if test -n "$appdirs" ; then
2066       echo "*** This configuration is not supported by this package." 1>&2
2067       exit 1
2068     fi
2069   fi
2070   # Okay, some application will build, or we don't care to check.  Still
2071   # notify of subdirs not getting built.
2072   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2073   echo "    ${notsupp}" 1>&2
2074   echo "    (Any other directories should still work fine.)" 1>&2
2075 fi
2076
2077 case "$host" in
2078   *msdosdjgpp*)
2079     enable_gdbtk=no ;;
2080 esac
2081
2082 # To find our prefix, in gcc_cv_tool_prefix.
2083 ACX_TOOL_DIRS
2084
2085 copy_dirs=
2086
2087 AC_ARG_WITH([build-sysroot],
2088   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2089                   [use sysroot as the system root during the build])],
2090   [if test x"$withval" != x ; then
2091      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2092    fi],
2093   [SYSROOT_CFLAGS_FOR_TARGET=])
2094 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2095
2096 AC_ARG_WITH([debug-prefix-map],
2097   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2098                   [map A to B, C to D ... in debug information])],
2099   [if test x"$withval" != x; then
2100      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2101      for debug_map in $withval; do
2102        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2103      done
2104    fi],
2105   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2106 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2107
2108 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2109 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2110 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2111 # We want to ensure that TARGET libraries (which we know are built with
2112 # gcc) are built with "-O2 -g", so include those options when setting
2113 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2114 if test "x$CFLAGS_FOR_TARGET" = x; then
2115   CFLAGS_FOR_TARGET=$CFLAGS
2116   case " $CFLAGS " in
2117     *" -O2 "*) ;;
2118     *) CFLAGS_FOR_TARGET="-O2 $CFLAGS" ;;
2119   esac
2120   case " $CFLAGS " in
2121     *" -g "* | *" -g3 "*) ;;
2122     *) CFLAGS_FOR_TARGET="-g $CFLAGS" ;;
2123   esac
2124 fi
2125 AC_SUBST(CFLAGS_FOR_TARGET)
2126
2127 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2128   CXXFLAGS_FOR_TARGET=$CXXFLAGS
2129   case " $CXXFLAGS " in
2130     *" -O2 "*) ;;
2131     *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS" ;;
2132   esac
2133   case " $CXXFLAGS " in
2134     *" -g "* | *" -g3 "*) ;;
2135     *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS" ;;
2136   esac
2137 fi
2138 AC_SUBST(CXXFLAGS_FOR_TARGET)
2139
2140 AC_SUBST(LDFLAGS_FOR_TARGET)
2141
2142 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2143 # the named directory are copied to $(tooldir)/sys-include.
2144 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2145   if test x${is_cross_compiler} = xno ; then
2146     echo 1>&2 '***' --with-headers is only supported when cross compiling
2147     exit 1
2148   fi
2149   if test x"${with_headers}" != xyes ; then
2150     x=${gcc_cv_tool_prefix}
2151     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2152   fi
2153 fi
2154
2155 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2156 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2157 # are permitted.
2158 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2159   if test x${is_cross_compiler} = xno ; then
2160     echo 1>&2 '***' --with-libs is only supported when cross compiling
2161     exit 1
2162   fi
2163   if test x"${with_libs}" != xyes ; then
2164     # Copy the libraries in reverse order, so that files in the first named
2165     # library override files in subsequent libraries.
2166     x=${gcc_cv_tool_prefix}
2167     for l in ${with_libs}; do
2168       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2169     done
2170   fi
2171 fi
2172
2173 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2174 #
2175 # This is done by determining whether or not the appropriate directory
2176 # is available, and by checking whether or not specific configurations
2177 # have requested that this magic not happen.
2178 #
2179 # The command line options always override the explicit settings in
2180 # configure.in, and the settings in configure.in override this magic.
2181 #
2182 # If the default for a toolchain is to use GNU as and ld, and you don't
2183 # want to do that, then you should use the --without-gnu-as and
2184 # --without-gnu-ld options for the configure script.  Similarly, if
2185 # the default is to use the included zlib and you don't want to do that,
2186 # you should use the --with-system-zlib option for the configure script.
2187
2188 if test x${use_gnu_as} = x &&
2189    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2190   with_gnu_as=yes
2191   extra_host_args="$extra_host_args --with-gnu-as"
2192 fi
2193
2194 if test x${use_gnu_ld} = x &&
2195    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2196   with_gnu_ld=yes
2197   extra_host_args="$extra_host_args --with-gnu-ld"
2198 fi
2199
2200 if test x${use_included_zlib} = x &&
2201    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2202   :
2203 else
2204   with_system_zlib=yes
2205   extra_host_args="$extra_host_args --with-system-zlib"
2206 fi
2207
2208 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2209 # can detect this case.
2210
2211 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2212   with_newlib=yes
2213   extra_host_args="$extra_host_args --with-newlib"
2214 fi
2215
2216 # Handle ${copy_dirs}
2217 set fnord ${copy_dirs}
2218 shift
2219 while test $# != 0 ; do
2220   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2221     :
2222   else
2223     echo Copying $1 to $2
2224
2225     # Use the install script to create the directory and all required
2226     # parent directories.
2227     if test -d $2 ; then
2228       :
2229     else
2230       echo >config.temp
2231       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2232     fi
2233
2234     # Copy the directory, assuming we have tar.
2235     # FIXME: Should we use B in the second tar?  Not all systems support it.
2236     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2237
2238     # It is the responsibility of the user to correctly adjust all
2239     # symlinks.  If somebody can figure out how to handle them correctly
2240     # here, feel free to add the code.
2241
2242     echo $1 > $2/COPIED
2243   fi
2244   shift; shift
2245 done
2246
2247 # Determine a target-dependent exec_prefix that the installed
2248 # gcc will search in.  Keep this list sorted by triplet, with
2249 # the *-*-osname triplets last.
2250 md_exec_prefix=
2251 case "${target}" in
2252   i[[34567]]86-pc-msdosdjgpp*)
2253     md_exec_prefix=/dev/env/DJDIR/bin
2254     ;;
2255   *-*-hpux* | \
2256   *-*-nto-qnx* | \
2257   *-*-solaris2*)
2258     md_exec_prefix=/usr/ccs/bin
2259     ;;
2260 esac
2261
2262 extra_arflags_for_target=
2263 extra_nmflags_for_target=
2264 extra_ranlibflags_for_target=
2265 target_makefile_frag=/dev/null
2266 case "${target}" in
2267   spu-*-*)
2268     target_makefile_frag="config/mt-spu"
2269     ;;
2270   mips*-sde-elf*)
2271     target_makefile_frag="config/mt-sde"
2272     ;;
2273   mipsisa*-*-elfoabi*)
2274     target_makefile_frag="config/mt-mips-elfoabi"
2275     ;;
2276   mips*-*-*linux* | mips*-*-gnu*)
2277     target_makefile_frag="config/mt-mips-gnu"
2278     ;;
2279   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2280     target_makefile_frag="config/mt-gnu"
2281     ;;
2282   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2283     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2284     # commands to handle both 32-bit and 64-bit objects.  These flags are
2285     # harmless if we're using GNU nm or ar.
2286     extra_arflags_for_target=" -X32_64"
2287     extra_nmflags_for_target=" -B -X32_64"
2288     ;;
2289   *-*-darwin[[3-9]]*)
2290     # ranlib before Darwin10 requires the -c flag to look at common symbols.
2291     extra_ranlibflags_for_target=" -c"
2292     ;;
2293 esac
2294
2295 alphaieee_frag=/dev/null
2296 case $target in
2297   alpha*-*-*)
2298     # This just makes sure to use the -mieee option to build target libs.
2299     # This should probably be set individually by each library.
2300     alphaieee_frag="config/mt-alphaieee"
2301     ;;
2302 esac
2303
2304 # If --enable-target-optspace always use -Os instead of -O2 to build
2305 # the target libraries, similarly if it is not specified, use -Os
2306 # on selected platforms.
2307 ospace_frag=/dev/null
2308 case "${enable_target_optspace}:${target}" in
2309   yes:*)
2310     ospace_frag="config/mt-ospace"
2311     ;;
2312   :d30v-*)
2313     ospace_frag="config/mt-d30v"
2314     ;;
2315   :m32r-* | :d10v-* | :fr30-*)
2316     ospace_frag="config/mt-ospace"
2317     ;;
2318   no:* | :*)
2319     ;;
2320   *)
2321     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2322     ;;
2323 esac
2324
2325 # Default to using --with-stabs for certain targets.
2326 if test x${with_stabs} = x ; then
2327   case "${target}" in
2328   mips*-*-irix[[56]]*)
2329     ;;
2330   mips*-*-* | alpha*-*-osf*)
2331     with_stabs=yes;
2332     extra_host_args="${extra_host_args} --with-stabs"
2333     ;;
2334   esac
2335 fi
2336
2337 # Some systems (e.g., one of the i386-aix systems the gas testers are
2338 # using) don't handle "\$" correctly, so don't use it here.
2339 tooldir='${exec_prefix}'/${target_noncanonical}
2340 build_tooldir=${tooldir}
2341
2342 # Create a .gdbinit file which runs the one in srcdir
2343 # and tells GDB to look there for source files.
2344
2345 if test -r ${srcdir}/.gdbinit ; then
2346   case ${srcdir} in
2347     .) ;;
2348     *) cat > ./.gdbinit <<EOF
2349 # ${NO_EDIT}
2350 dir ${srcdir}
2351 dir .
2352 source ${srcdir}/.gdbinit
2353 EOF
2354     ;;
2355   esac
2356 fi
2357
2358 # Make sure that the compiler is able to generate an executable.  If it
2359 # can't, we are probably in trouble.  We don't care whether we can run the
2360 # executable--we might be using a cross compiler--we only care whether it
2361 # can be created.  At this point the main configure script has set CC.
2362 we_are_ok=no
2363 echo "int main () { return 0; }" > conftest.c
2364 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2365 if test $? = 0 ; then
2366   if test -s conftest || test -s conftest.exe ; then
2367     we_are_ok=yes
2368   fi
2369 fi
2370 case $we_are_ok in
2371   no)
2372     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2373     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2374     rm -f conftest*
2375     exit 1
2376     ;;
2377 esac
2378 rm -f conftest*
2379
2380 # Decide which environment variable is used to find dynamic libraries.
2381 case "${host}" in
2382   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2383   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2384   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2385   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2386 esac
2387
2388 # On systems where the dynamic library environment variable is PATH,
2389 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2390 # built executables to PATH.
2391 if test "$RPATH_ENVVAR" = PATH; then
2392   GCC_SHLIB_SUBDIR=/shlib
2393 else
2394   GCC_SHLIB_SUBDIR=
2395 fi
2396
2397 # Record target_configdirs and the configure arguments for target and
2398 # build configuration in Makefile.
2399 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2400 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2401
2402 # If we are building libgomp, bootstrap it.
2403 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2404   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2405 fi
2406
2407 # Determine whether gdb needs tk/tcl or not.
2408 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2409 # and in that case we want gdb to be built without tk.  Ugh!
2410 # In fact I believe gdb is the *only* package directly dependent on tk,
2411 # so we should be able to put the 'maybe's in unconditionally and
2412 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2413 # 100% sure that that's safe though.
2414
2415 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2416 case "$enable_gdbtk" in
2417   no)
2418     GDB_TK="" ;;
2419   yes)
2420     GDB_TK="${gdb_tk}" ;;
2421   *)
2422     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2423     # distro.  Eventually someone will fix this and move Insight, nee
2424     # gdbtk to a separate directory.
2425     if test -d ${srcdir}/gdb/gdbtk ; then
2426       GDB_TK="${gdb_tk}"
2427     else
2428       GDB_TK=""
2429     fi
2430     ;;
2431 esac
2432 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2433 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2434
2435 # Strip out unwanted targets.
2436
2437 # While at that, we remove Makefiles if we were started for recursive
2438 # configuration, so that the top-level Makefile reconfigures them,
2439 # like we used to do when configure itself was recursive.
2440
2441 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2442 # but now we're fixing up the Makefile ourselves with the additional
2443 # commands passed to AC_CONFIG_FILES.  Use separate variables
2444 # extrasub-{build,host,target} not because there is any reason to split
2445 # the substitutions up that way, but only to remain below the limit of
2446 # 99 commands in a script, for HP-UX sed.
2447 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2448
2449 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2450   yes:yes:*\ gold\ *:*,c++,*) ;;
2451   yes:yes:*\ gold\ *:*)
2452     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2453     ;;
2454 esac
2455
2456 # Adjust the toplevel makefile according to whether bootstrap was selected.
2457 case $enable_bootstrap in
2458   yes)
2459     bootstrap_suffix=bootstrap
2460     BUILD_CONFIG=bootstrap-debug
2461     ;;
2462   no)
2463     bootstrap_suffix=no-bootstrap
2464     BUILD_CONFIG=
2465     ;;
2466 esac
2467
2468 AC_MSG_CHECKING(for default BUILD_CONFIG)
2469
2470 AC_ARG_WITH([build-config],
2471   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2472                   [use config/NAME.mk build configuration])],
2473   [case $with_build_config in
2474    yes) with_build_config= ;;
2475    no) with_build_config= BUILD_CONFIG= ;;
2476    esac])
2477
2478 if test "x${with_build_config}" != x; then
2479   BUILD_CONFIG=$with_build_config
2480 else
2481   case $BUILD_CONFIG in
2482   bootstrap-debug)
2483     if echo "int f (void) { return 0; }" > conftest.c &&
2484        ${CC} -c conftest.c &&
2485        mv conftest.o conftest.o.g0 &&
2486        ${CC} -c -g conftest.c &&
2487        mv conftest.o conftest.o.g &&
2488        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2489       :
2490     else
2491       BUILD_CONFIG=
2492     fi
2493     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2494     ;;
2495   esac
2496 fi
2497 AC_MSG_RESULT($BUILD_CONFIG)
2498 AC_SUBST(BUILD_CONFIG)
2499
2500 extrasub_build=
2501 for module in ${build_configdirs} ; do
2502   if test -z "${no_recursion}" \
2503      && test -f ${build_subdir}/${module}/Makefile; then
2504     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2505     rm -f ${build_subdir}/${module}/Makefile
2506   fi
2507   extrasub_build="$extrasub_build
2508 /^@if build-$module\$/d
2509 /^@endif build-$module\$/d
2510 /^@if build-$module-$bootstrap_suffix\$/d
2511 /^@endif build-$module-$bootstrap_suffix\$/d"
2512 done
2513 extrasub_host=
2514 for module in ${configdirs} ; do
2515   if test -z "${no_recursion}"; then
2516     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2517       if test -f ${file}; then
2518         echo 1>&2 "*** removing ${file} to force reconfigure"
2519         rm -f ${file}
2520       fi
2521     done
2522   fi
2523   extrasub_host="$extrasub_host
2524 /^@if $module\$/d
2525 /^@endif $module\$/d
2526 /^@if $module-$bootstrap_suffix\$/d
2527 /^@endif $module-$bootstrap_suffix\$/d"
2528 done
2529 extrasub_target=
2530 for module in ${target_configdirs} ; do
2531   if test -z "${no_recursion}" \
2532      && test -f ${target_subdir}/${module}/Makefile; then
2533     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2534     rm -f ${target_subdir}/${module}/Makefile
2535   fi
2536
2537   # We only bootstrap target libraries listed in bootstrap_target_libs.
2538   case $bootstrap_target_libs in
2539     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2540     *) target_bootstrap_suffix=no-bootstrap ;;
2541   esac
2542
2543   extrasub_target="$extrasub_target
2544 /^@if target-$module\$/d
2545 /^@endif target-$module\$/d
2546 /^@if target-$module-$target_bootstrap_suffix\$/d
2547 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2548 done
2549
2550 # Do the final fixup along with target modules.
2551 extrasub_target="$extrasub_target
2552 /^@if /,/^@endif /d"
2553
2554 # Create the serialization dependencies.  This uses a temporary file.
2555
2556 AC_ARG_ENABLE([serial-configure],
2557 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2558                 [force sequential configuration of
2559                  sub-packages for the host, target or build
2560                  machine, or all sub-packages])])
2561
2562 case ${enable_serial_configure} in
2563   yes)
2564     enable_serial_build_configure=yes
2565     enable_serial_host_configure=yes
2566     enable_serial_target_configure=yes
2567     ;;
2568 esac
2569
2570 # These force 'configure's to be done one at a time, to avoid problems
2571 # with contention over a shared config.cache.
2572 rm -f serdep.tmp
2573 echo '# serdep.tmp' > serdep.tmp
2574 olditem=
2575 test "x${enable_serial_build_configure}" = xyes &&
2576 for item in ${build_configdirs} ; do
2577   case ${olditem} in
2578     "") ;;
2579     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2580   esac
2581   olditem=${item}
2582 done
2583 olditem=
2584 test "x${enable_serial_host_configure}" = xyes &&
2585 for item in ${configdirs} ; do
2586   case ${olditem} in
2587     "") ;;
2588     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2589   esac
2590   olditem=${item}
2591 done
2592 olditem=
2593 test "x${enable_serial_target_configure}" = xyes &&
2594 for item in ${target_configdirs} ; do
2595   case ${olditem} in
2596     "") ;;
2597     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2598   esac
2599   olditem=${item}
2600 done
2601 serialization_dependencies=serdep.tmp
2602 AC_SUBST_FILE(serialization_dependencies)
2603
2604 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2605 # target, nonopt, and variable assignments.  These are the ones we
2606 # might not want to pass down to subconfigures.  The exception being
2607 # --cache-file=/dev/null, which is used to turn off the use of cache
2608 # files altogether, and which should be passed on to subconfigures.
2609 # Also strip program-prefix, program-suffix, and program-transform-name,
2610 # so that we can pass down a consistent program-transform-name.
2611 baseargs=
2612 tbaseargs=
2613 keep_next=no
2614 skip_next=no
2615 eval "set -- $ac_configure_args"
2616 for ac_arg
2617 do
2618   if test X"$skip_next" = X"yes"; then
2619     skip_next=no
2620     continue
2621   fi
2622   if test X"$keep_next" = X"yes"; then
2623     case $ac_arg in
2624       *\'*)
2625         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2626     esac
2627     baseargs="$baseargs '$ac_arg'"
2628     tbaseargs="$tbaseargs '$ac_arg'"
2629     keep_next=no
2630     continue
2631   fi
2632
2633   # Handle separated arguments.  Based on the logic generated by
2634   # autoconf 2.59.
2635   case $ac_arg in
2636     *=* | --config-cache | -C | -disable-* | --disable-* \
2637       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2638       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2639       | -with-* | --with-* | -without-* | --without-* | --x)
2640       separate_arg=no
2641       ;;
2642     -*)
2643       separate_arg=yes
2644       ;;
2645     *)
2646       separate_arg=no
2647       ;;
2648   esac
2649
2650   skip_targ=no
2651   case $ac_arg in
2652 changequote(,)
2653   --with-* | --without-*)
2654     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2655
2656     case $libopt in
2657     *[-_]include)
2658       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2659       ;;
2660     *[-_]lib)
2661       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2662       ;;
2663     *)
2664       lib=$libopt
2665       ;;
2666     esac
2667 changequote([,])
2668
2669     case $lib in
2670     mpc | mpfr | gmp | ppl | cloog)
2671       # If we're processing --with-$lib, --with-$lib-include or
2672       # --with-$lib-lib, for one of the libs above, and target is
2673       # different from host, don't pass the current argument to any
2674       # target library's configure.
2675       if test x$is_cross_compiler = xyes; then
2676         skip_targ=yes
2677       fi
2678       ;;
2679     esac
2680     ;;
2681   esac
2682
2683   case "$ac_arg" in
2684     --cache-file=/dev/null | \
2685     -cache-file=/dev/null )
2686       # Handled here to avoid the test to skip args below.
2687       baseargs="$baseargs '$ac_arg'"
2688       tbaseargs="$tbaseargs '$ac_arg'"
2689       # Assert: $separate_arg should always be no.
2690       keep_next=$separate_arg
2691       ;;
2692     --no*)
2693       continue
2694       ;;
2695     --c* | \
2696     --sr* | \
2697     --ho* | \
2698     --bu* | \
2699     --t* | \
2700     --program-* | \
2701     -cache_file* | \
2702     -srcdir* | \
2703     -host* | \
2704     -build* | \
2705     -target* | \
2706     -program-prefix* | \
2707     -program-suffix* | \
2708     -program-transform-name* )
2709       skip_next=$separate_arg
2710       continue
2711       ;;
2712     -*)
2713       # An option.  Add it.
2714       case $ac_arg in
2715         *\'*)
2716           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2717       esac
2718       baseargs="$baseargs '$ac_arg'"
2719       if test X"$skip_targ" = Xno; then
2720         tbaseargs="$tbaseargs '$ac_arg'"
2721       fi
2722       keep_next=$separate_arg
2723       ;;
2724     *)
2725       # Either a variable assignment, or a nonopt (triplet).  Don't
2726       # pass it down; let the Makefile handle this.
2727       continue
2728       ;;
2729   esac
2730 done
2731 # Remove the initial space we just introduced and, as these will be
2732 # expanded by make, quote '$'.
2733 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2734
2735 # Add in --program-transform-name, after --program-prefix and
2736 # --program-suffix have been applied to it.  Autoconf has already
2737 # doubled dollar signs and backslashes in program_transform_name; we want
2738 # the backslashes un-doubled, and then the entire thing wrapped in single
2739 # quotes, because this will be expanded first by make and then by the shell.
2740 # Also, because we want to override the logic in subdir configure scripts to
2741 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2742 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2743 ${program_transform_name}
2744 EOF_SED
2745 gcc_transform_name=`cat conftestsed.out`
2746 rm -f conftestsed.out
2747 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2748 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2749 if test "$silent" = yes; then
2750   baseargs="$baseargs --silent"
2751   tbaseargs="$tbaseargs --silent"
2752 fi
2753 baseargs="$baseargs --disable-option-checking"
2754 tbaseargs="$tbaseargs --disable-option-checking"
2755
2756 # Record and document user additions to sub configure arguments.
2757 AC_ARG_VAR([build_configargs],
2758            [additional configure arguments for build directories])
2759 AC_ARG_VAR([host_configargs],
2760            [additional configure arguments for host directories])
2761 AC_ARG_VAR([target_configargs],
2762            [additional configure arguments for target directories])
2763
2764 # For the build-side libraries, we just need to pretend we're native,
2765 # and not use the same cache file.  Multilibs are neither needed nor
2766 # desired.
2767 build_configargs="$build_configargs --cache-file=../config.cache ${baseargs}"
2768
2769 # For host modules, accept cache file option, or specification as blank.
2770 case "${cache_file}" in
2771 "") # empty
2772   cache_file_option="" ;;
2773 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2774   cache_file_option="--cache-file=${cache_file}" ;;
2775 *) # relative path
2776   cache_file_option="--cache-file=../${cache_file}" ;;
2777 esac
2778
2779 # Host dirs don't like to share a cache file either, horribly enough.
2780 # This seems to be due to autoconf 2.5x stupidity.
2781 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2782
2783 target_configargs="$target_configargs ${tbaseargs}"
2784
2785 # Passing a --with-cross-host argument lets the target libraries know
2786 # whether they are being built with a cross-compiler or being built
2787 # native.  However, it would be better to use other mechanisms to make the
2788 # sorts of decisions they want to make on this basis.  Please consider
2789 # this option to be deprecated.  FIXME.
2790 if test x${is_cross_compiler} = xyes ; then
2791   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
2792 fi
2793
2794 # Default to --enable-multilib.
2795 if test x${enable_multilib} = x ; then
2796   target_configargs="--enable-multilib ${target_configargs}"
2797 fi
2798
2799 # Pass --with-newlib if appropriate.  Note that target_configdirs has
2800 # changed from the earlier setting of with_newlib.
2801 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
2802   target_configargs="--with-newlib ${target_configargs}"
2803 fi
2804
2805 # Different target subdirs use different values of certain variables
2806 # (notably CXX).  Worse, multilibs use *lots* of different values.
2807 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
2808 # it doesn't automatically accept command-line overrides of them.
2809 # This means it's not safe for target subdirs to share a cache file,
2810 # which is disgusting, but there you have it.  Hopefully this can be
2811 # fixed in future.  It's still worthwhile to use a cache file for each
2812 # directory.  I think.
2813
2814 # Pass the appropriate --build, --host, --target and --cache-file arguments.
2815 # We need to pass --target, as newer autoconf's requires consistency
2816 # for target_alias and gcc doesn't manage it consistently.
2817 target_configargs="--cache-file=./config.cache ${target_configargs}"
2818
2819 FLAGS_FOR_TARGET=
2820 case " $target_configdirs " in
2821  *" newlib "*)
2822   case " $target_configargs " in
2823   *" --with-newlib "*)
2824    case "$target" in
2825     *-cygwin*)
2826       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 $$s/winsup/w32api/include'
2827       ;;
2828    esac
2829
2830    # If we're not building GCC, don't discard standard headers.
2831    if test -d ${srcdir}/gcc; then
2832      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
2833
2834      if test "${build}" != "${host}"; then
2835        # On Canadian crosses, CC_FOR_TARGET will have already been set
2836        # by `configure', so we won't have an opportunity to add -Bgcc/
2837        # to it.  This is right: we don't want to search that directory
2838        # for binaries, but we want the header files in there, so add
2839        # them explicitly.
2840        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
2841
2842        # Someone might think of using the pre-installed headers on
2843        # Canadian crosses, in case the installed compiler is not fully
2844        # compatible with the compiler being built.  In this case, it
2845        # would be better to flag an error than risking having
2846        # incompatible object files being constructed.  We can't
2847        # guarantee that an error will be flagged, but let's hope the
2848        # compiler will do it, when presented with incompatible header
2849        # files.
2850      fi
2851    fi
2852
2853    case "${target}-${is_cross_compiler}" in
2854    i[[3456789]]86-*-linux*-no)
2855       # Here host == target, so we don't need to build gcc,
2856       # so we don't want to discard standard headers.
2857       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
2858       ;;
2859    *)
2860       # If we're building newlib, use its generic headers last, but search
2861       # for any libc-related directories first (so make it the last -B
2862       # switch).
2863       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
2864
2865       # If we're building libgloss, find the startup file, simulator library
2866       # and linker script.
2867       case " $target_configdirs " in
2868         *" libgloss "*)
2869         # Look for startup file, simulator library and maybe linker script.
2870         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
2871         # Look for libnosys.a in case the target needs it.
2872         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
2873         # Most targets have the linker script in the source directory.
2874         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
2875         ;;
2876       esac
2877       ;;
2878    esac
2879    ;;
2880   esac
2881   ;;
2882 esac
2883
2884 case "$target" in
2885   x86_64-*mingw* | *-w64-mingw*)
2886   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
2887   # however, use a symlink named 'mingw' in ${prefix} .
2888     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
2889     ;;
2890   *-mingw*)
2891   # MinGW can't be handled as Cygwin above since it does not use newlib.
2892     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
2893     ;;
2894 esac
2895
2896 # Allow the user to override the flags for
2897 # our build compiler if desired.
2898 if test x"${build}" = x"${host}" ; then
2899   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
2900   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
2901   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
2902 fi
2903
2904 # On Canadian crosses, we'll be searching the right directories for
2905 # the previously-installed cross compiler, so don't bother to add
2906 # flags for directories within the install tree of the compiler
2907 # being built; programs in there won't even run.
2908 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
2909   # Search for pre-installed headers if nothing else fits.
2910   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
2911 fi
2912
2913 if test "x${use_gnu_ld}" = x &&
2914    echo " ${configdirs} " | grep " ld " > /dev/null ; then
2915   # Arrange for us to find uninstalled linker scripts.
2916   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
2917 fi
2918
2919 # Search for other target-specific linker scripts and such.
2920 case "${target}" in
2921   mep*)
2922     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
2923     ;;
2924 esac
2925
2926 # Makefile fragments.
2927 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
2928 do
2929   eval fragval=\$$frag
2930   if test $fragval != /dev/null; then
2931     eval $frag=${srcdir}/$fragval
2932   fi
2933 done
2934 AC_SUBST_FILE(host_makefile_frag)
2935 AC_SUBST_FILE(target_makefile_frag)
2936 AC_SUBST_FILE(alphaieee_frag)
2937 AC_SUBST_FILE(ospace_frag)
2938
2939 # Miscellanea: directories, flags, etc.
2940 AC_SUBST(RPATH_ENVVAR)
2941 AC_SUBST(GCC_SHLIB_SUBDIR)
2942 AC_SUBST(tooldir)
2943 AC_SUBST(build_tooldir)
2944 AC_SUBST(CONFIGURE_GDB_TK)
2945 AC_SUBST(GDB_TK)
2946 AC_SUBST(INSTALL_GDB_TK)
2947
2948 # Build module lists & subconfigure args.
2949 AC_SUBST(build_configargs)
2950 AC_SUBST(build_configdirs)
2951
2952 # Host module lists & subconfigure args.
2953 AC_SUBST(host_configargs)
2954 AC_SUBST(configdirs)
2955 AC_SUBST(target_configdirs)
2956
2957 # Target module lists & subconfigure args.
2958 AC_SUBST(target_configargs)
2959
2960
2961 # Build tools.
2962 AC_SUBST(AR_FOR_BUILD)
2963 AC_SUBST(AS_FOR_BUILD)
2964 AC_SUBST(CC_FOR_BUILD)
2965 AC_SUBST(CFLAGS_FOR_BUILD)
2966 AC_SUBST(CXXFLAGS_FOR_BUILD)
2967 AC_SUBST(CXX_FOR_BUILD)
2968 AC_SUBST(DLLTOOL_FOR_BUILD)
2969 AC_SUBST(GCJ_FOR_BUILD)
2970 AC_SUBST(GFORTRAN_FOR_BUILD)
2971 AC_SUBST(GOC_FOR_BUILD)
2972 AC_SUBST(LDFLAGS_FOR_BUILD)
2973 AC_SUBST(LD_FOR_BUILD)
2974 AC_SUBST(NM_FOR_BUILD)
2975 AC_SUBST(RANLIB_FOR_BUILD)
2976 AC_SUBST(WINDMC_FOR_BUILD)
2977 AC_SUBST(WINDRES_FOR_BUILD)
2978
2979 # Generate default definitions for YACC, M4, LEX and other programs that run
2980 # on the build machine.  These are used if the Makefile can't locate these
2981 # programs in objdir.
2982 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
2983
2984 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
2985 case " $build_configdirs " in
2986   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
2987 esac
2988
2989 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
2990 case " $build_configdirs " in
2991   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
2992 esac
2993
2994 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
2995 case " $build_configdirs " in
2996   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
2997 esac
2998
2999 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3000 case " $build_configdirs " in
3001   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3002   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3003 esac
3004
3005 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3006 case " $build_configdirs " in
3007   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3008 esac
3009
3010 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3011 case " $build_configdirs " in
3012   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3013   *)
3014 changequote(,)
3015     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3016     # higher, else we use the "missing" dummy.
3017     if ${MAKEINFO} --version \
3018        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3019       :
3020     else
3021       MAKEINFO="$MISSING makeinfo"
3022     fi
3023     ;;
3024 changequote([,])
3025 esac
3026
3027 # FIXME: expect and dejagnu may become build tools?
3028
3029 AC_CHECK_PROGS(EXPECT, expect, expect)
3030 case " $configdirs " in
3031   *" expect "*)
3032     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3033     ;;
3034 esac
3035
3036 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3037 case " $configdirs " in
3038   *" dejagnu "*)
3039     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3040     ;;
3041 esac
3042
3043
3044 # Host tools.
3045 NCN_STRICT_CHECK_TOOLS(AR, ar)
3046 NCN_STRICT_CHECK_TOOLS(AS, as)
3047 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3048 NCN_STRICT_CHECK_TOOLS(LD, ld)
3049 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3050 NCN_STRICT_CHECK_TOOLS(NM, nm)
3051 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3052 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3053 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3054 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3055 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3056 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3057 AC_SUBST(CC)
3058 AC_SUBST(CXX)
3059 AC_SUBST(CFLAGS)
3060 AC_SUBST(CXXFLAGS)
3061
3062 # Target tools.
3063 AC_ARG_WITH([build-time-tools],
3064   [AS_HELP_STRING([--with-build-time-tools=PATH],
3065                   [use given path to find target tools during the build])],
3066   [case x"$withval" in
3067      x/*) ;;
3068      *)
3069        with_build_time_tools=
3070        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3071        ;;
3072    esac],
3073   [with_build_time_tools=])
3074
3075 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3076 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3077 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3078 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3079 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3080 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3081
3082 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3083 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3084 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3085 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3086 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3087 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3088 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3089 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3090 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3091 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3092 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3093
3094 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3095
3096 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3097 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3098 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3099 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3100 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3101                 [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$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs],
3102                 c++)
3103 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3104                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs],
3105                 c++)
3106 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3107 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3108 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3109                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3110 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3111                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3112 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3113                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3114 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3115 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3116 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3117 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3118 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3119 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3120 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3121 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3122
3123 AC_SUBST(FLAGS_FOR_TARGET)
3124 AC_SUBST(RAW_CXX_FOR_TARGET)
3125
3126 # Certain tools may need extra flags.
3127 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3128 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3129 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3130
3131 # When building target libraries, except in a Canadian cross, we use
3132 # the same toolchain as the compiler we just built.
3133 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3134 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3135 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3136 if test $host = $build; then
3137   case " $configdirs " in
3138     *" gcc "*)
3139       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3140       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3141       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3142       ;;
3143   esac
3144 fi
3145
3146 AC_SUBST(COMPILER_AS_FOR_TARGET)
3147 AC_SUBST(COMPILER_LD_FOR_TARGET)
3148 AC_SUBST(COMPILER_NM_FOR_TARGET)
3149
3150 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3151 AC_ARG_ENABLE(maintainer-mode,
3152 [AS_HELP_STRING([--enable-maintainer-mode],
3153                 [enable make rules and dependencies not useful
3154                  (and sometimes confusing) to the casual installer])],
3155       USE_MAINTAINER_MODE=$enableval,
3156       USE_MAINTAINER_MODE=no)
3157 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3158 AC_SUBST(MAINTAINER_MODE_TRUE)
3159 AC_SUBST(MAINTAINER_MODE_FALSE)
3160 if test "$USE_MAINTAINER_MODE" = yes; then
3161   MAINTAINER_MODE_TRUE=
3162   MAINTAINER_MODE_FALSE='#'
3163 else
3164   MAINTAINER_MODE_TRUE='#'
3165   MAINTAINER_MODE_FALSE=
3166 fi
3167 MAINT=$MAINTAINER_MODE_TRUE
3168 AC_SUBST(MAINT)dnl
3169
3170 # ---------------------
3171 # GCC bootstrap support
3172 # ---------------------
3173
3174 # Stage specific cflags for build.
3175 stage1_cflags="-g"
3176 case $build in
3177   vax-*-*)
3178     case ${GCC} in
3179       yes) stage1_cflags="-g -Wa,-J" ;;
3180       *) stage1_cflags="-g -J" ;;
3181     esac ;;
3182 esac
3183
3184 # This is aimed to mimic bootstrap with a non-GCC compiler to catch problems.
3185 if test "$GCC" = yes -a "$ENABLE_BUILD_WITH_CXX" != yes; then
3186   saved_CFLAGS="$CFLAGS"
3187
3188   # Pass -fkeep-inline-functions for stage 1 if the GCC version supports it.
3189   CFLAGS="$CFLAGS -fkeep-inline-functions"
3190   AC_MSG_CHECKING([whether -fkeep-inline-functions is supported])
3191   AC_TRY_COMPILE([
3192 #if (__GNUC__ < 3) \
3193     || (__GNUC__ == 3 && (__GNUC_MINOR__ < 3 \
3194                           || (__GNUC_MINOR__ == 3 && __GNUC_PATCHLEVEL__ < 1)))
3195 #error http://gcc.gnu.org/PR29382
3196 #endif
3197     ],,
3198     [AC_MSG_RESULT([yes]); stage1_cflags="$stage1_cflags -fkeep-inline-functions"],
3199     [AC_MSG_RESULT([no])])
3200
3201   CFLAGS="$saved_CFLAGS"
3202 fi
3203
3204 AC_SUBST(stage1_cflags)
3205
3206 # Enable --enable-checking in stage1 of the compiler.
3207 AC_ARG_ENABLE(stage1-checking,
3208 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3209                 [choose additional checking for stage1 of the compiler])],
3210 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3211 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3212   stage1_checking=--enable-checking=yes,types
3213 else
3214   stage1_checking=--enable-checking=$enable_checking,types
3215 fi])
3216 AC_SUBST(stage1_checking)
3217
3218 # Enable -Werror in bootstrap stage2 and later.
3219 AC_ARG_ENABLE(werror,
3220 [AS_HELP_STRING([--enable-werror],
3221                 [enable -Werror in bootstrap stage2 and later])], [],
3222 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3223   enable_werror=yes
3224 else
3225   enable_werror=no
3226 fi])
3227 case ${enable_werror} in
3228   yes) stage2_werror_flag="--enable-werror-always" ;;
3229   *) stage2_werror_flag="" ;;
3230 esac
3231 AC_SUBST(stage2_werror_flag)
3232
3233 # If using ENABLE_BUILD_POSTSTAGE1_WITH_CXX, pass
3234 # --enable-build-with-cxx after stage1.
3235 if test "$ENABLE_BUILD_POSTSTAGE1_WITH_CXX" = "yes"; then
3236   POSTSTAGE1_CONFIGURE_FLAGS=--enable-build-with-cxx
3237 else
3238   POSTSTAGE1_CONFIGURE_FLAGS=
3239 fi
3240 AC_SUBST(POSTSTAGE1_CONFIGURE_FLAGS)
3241
3242 # Specify what files to not compare during bootstrap.
3243
3244 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3245 case "$target" in
3246   hppa*64*-*-hpux*) ;;
3247   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3248 esac
3249 case " $configdirs " in
3250 *" ppl "*) compare_exclusions="$compare_exclusions | ppl/src/ppl-config.o" ;;
3251 esac
3252 AC_SUBST(compare_exclusions)
3253
3254 AC_CONFIG_FILES([Makefile],
3255   [sed "$extrasub_build" Makefile |
3256    sed "$extrasub_host" |
3257    sed "$extrasub_target" > mf$$
3258    mv -f mf$$ Makefile],
3259   [extrasub_build="$extrasub_build"
3260    extrasub_host="$extrasub_host"
3261    extrasub_target="$extrasub_target"])
3262 AC_OUTPUT