configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
   3 #   2014, 2015, 2016 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32
  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 build-libcpp"
 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 #f
 135 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl 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 libcc1 gotools"
 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-libbacktrace \
 155                 target-libgloss \
 156                 target-newlib \
 157                 target-libgomp \
 158                 target-libcilkrts \
 159                 target-liboffloadmic \
 160                 target-libatomic \
 161                 target-libitm \
 162                 target-libstdc++-v3 \
 163                 target-libsanitizer \
 164                 target-libvtv \
 165                 target-libmpx \
 166                 target-libssp \
 167                 target-libquadmath \
 168                 target-libgfortran \
 169                 target-boehm-gc \
 170                 ${libgcj} \
 171                 target-libobjc \
 172                 target-libada \
 173                 target-libgo"
 174
 175 # these tools are built using the target libraries, and are intended to
 176 # run only in the target environment
 177 #
 178 # note: any program that *uses* libraries that are in the "target_libraries"
 179 # list belongs in this list.
 180 #
 181 target_tools="target-rda"
 182
 183 ################################################################################
 184
 185 ## All tools belong in one of the four categories, and are assigned above
 186 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 187 ## is important because configure will choke if they ever get through.
 188 ## ${configdirs} is directories we build using the host tools.
 189 ## ${target_configdirs} is directories we build using the target tools.
 190 configdirs=`echo ${host_libs} ${host_tools}`
 191 target_configdirs=`echo ${target_libraries} ${target_tools}`
 192 build_configdirs=`echo ${build_libs} ${build_tools}`
 193
 194 m4_divert_text([PARSE_ARGS],
 195 [case $srcdir in
 196   *" "*)
 197 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 198     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 199 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 200     ;;
 201 esac
 202 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 203 ])
 204
 205 ################################################################################
 206
 207 srcname="gnu development package"
 208
 209 # This gets set non-empty for some net releases of packages.
 210 appdirs=""
 211
 212 # Define is_cross_compiler to save on calls to 'test'.
 213 is_cross_compiler=
 214 if test x"${host}" = x"${target}" ; then
 215   is_cross_compiler=no
 216 else
 217   is_cross_compiler=yes
 218 fi
 219
 220 # Find the build and target subdir names.
 221 GCC_TOPLEV_SUBDIRS
 222 # Be sure to cover against remnants of an in-tree build.
 223 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 224   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 225 Use a pristine source tree when building in a separate tree])
 226 fi
 227
 228 # Skipdirs are removed silently.
 229 skipdirs=
 230 # Noconfigdirs are removed loudly.
 231 noconfigdirs=""
 232
 233 use_gnu_ld=
 234 # Make sure we don't let GNU ld be added if we didn't want it.
 235 if test x$with_gnu_ld = xno ; then
 236   use_gnu_ld=no
 237   noconfigdirs="$noconfigdirs ld gold"
 238 fi
 239
 240 use_gnu_as=
 241 # Make sure we don't let GNU as be added if we didn't want it.
 242 if test x$with_gnu_as = xno ; then
 243   use_gnu_as=no
 244   noconfigdirs="$noconfigdirs gas"
 245 fi
 246
 247 use_included_zlib=
 248 AC_ARG_WITH(system-zlib,
 249 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 250 # Make sure we don't let ZLIB be added if we didn't want it.
 251 if test x$with_system_zlib = xyes ; then
 252   use_included_zlib=no
 253   noconfigdirs="$noconfigdirs zlib"
 254 fi
 255
 256 # some tools are so dependent upon X11 that if we're not building with X,
 257 # it's not even worth trying to configure, much less build, that tool.
 258
 259 case ${with_x} in
 260   yes | "") ;; # the default value for this tree is that X11 is available
 261   no)
 262     skipdirs="${skipdirs} tk itcl libgui"
 263     # We won't be able to build gdbtk without X.
 264     enable_gdbtk=no
 265     ;;
 266   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 267 esac
 268
 269 # Some are only suitable for cross toolchains.
 270 # Remove these if host=target.
 271 cross_only="target-libgloss target-newlib target-opcodes"
 272
 273 case $is_cross_compiler in
 274   no) skipdirs="${skipdirs} ${cross_only}" ;;
 275 esac
 276
 277 # If both --with-headers and --with-libs are specified, default to
 278 # --without-newlib.
 279 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 280    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 281   if test x"${with_newlib}" = x ; then
 282     with_newlib=no
 283   fi
 284 fi
 285
 286 # Recognize --with-newlib/--without-newlib.
 287 case ${with_newlib} in
 288   no) skipdirs="${skipdirs} target-newlib" ;;
 289   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 290 esac
 291
 292 AC_ARG_ENABLE(as-accelerator-for,
 293 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 294                 [build as offload target compiler.
 295                 Specify offload host triple by ARG])])
 296
 297 AC_ARG_ENABLE(offload-targets,
 298 [AS_HELP_STRING([--enable-offload-targets=LIST],
 299                 [enable offloading to devices from comma-separated LIST of
 300                 TARGET[=DIR]. Use optional path to find offload target compiler
 301                 during the build])],
 302 [
 303   if test x"$enable_offload_targets" = x; then
 304     AC_MSG_ERROR([no offload targets specified])
 305   fi
 306 ], [enable_offload_targets=])
 307
 308 # Handle --enable-gold, --enable-ld.
 309 # --disable-gold [--enable-ld]
 310 #     Build only ld.  Default option.
 311 # --enable-gold [--enable-ld]
 312 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 313 #     as "ld.bfd" and "ld".
 314 # --enable-gold=default [--enable-ld]
 315 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 316 #     install ld as "ld.bfd".
 317 # --enable-gold[=default] --disable-ld
 318 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 319 # --enable-gold --enable-ld=default
 320 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 321 #     and ld.bfd).
 322 #     In other words, ld is default
 323 # --enable-gold=default --enable-ld=default
 324 #     Error.
 325
 326 default_ld=
 327 AC_ARG_ENABLE(gold,
 328 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 329                 [build gold @<:@ARG={default,yes,no}@:>@])],
 330 ENABLE_GOLD=$enableval,
 331 ENABLE_GOLD=no)
 332 case "${ENABLE_GOLD}" in
 333   yes|default)
 334     # Check for ELF target.
 335     is_elf=no
 336     case "${target}" in
 337       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 338       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 339       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 340       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 341         case "${target}" in
 342           *-*-linux*aout* | *-*-linux*oldld*)
 343             ;;
 344           *)
 345             is_elf=yes
 346             ;;
 347         esac
 348     esac
 349
 350     if test "$is_elf" = "yes"; then
 351       # Check for target supported by gold.
 352       case "${target}" in
 353         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 354         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 355           configdirs="$configdirs gold"
 356           if test x${ENABLE_GOLD} = xdefault; then
 357             default_ld=gold
 358           fi
 359           ENABLE_GOLD=yes
 360           ;;
 361       esac
 362     fi
 363     ;;
 364   no)
 365     ;;
 366   *)
 367     AC_MSG_ERROR([invalid --enable-gold argument])
 368     ;;
 369 esac
 370
 371 AC_ARG_ENABLE(ld,
 372 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 373                 [build ld @<:@ARG={default,yes,no}@:>@])],
 374 ENABLE_LD=$enableval,
 375 ENABLE_LD=yes)
 376
 377 case "${ENABLE_LD}" in
 378   default)
 379     if test x${default_ld} != x; then
 380       AC_MSG_ERROR([either gold or ld can be the default ld])
 381     fi
 382     ;;
 383   yes)
 384     ;;
 385   no)
 386     if test x${ENABLE_GOLD} != xyes; then
 387       AC_MSG_WARN([neither ld nor gold are enabled])
 388     fi
 389     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 390     ;;
 391   *)
 392     AC_MSG_ERROR([invalid --enable-ld argument])
 393     ;;
 394 esac
 395
 396 # PR gas/19109
 397 # Decide the default method for compressing debug sections.
 398 # Provide a configure time option to override our default.
 399 AC_ARG_ENABLE(compressed_debug_sections,
 400 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 401                 [Enable compressed debug sections for gas, gold or ld by
 402                  default])],
 403 [
 404   if test x"$enable_compressed_debug_sections" = xyes; then
 405     AC_MSG_ERROR([no program with compressed debug sections specified])
 406   fi
 407 ], [enable_compressed_debug_sections=])
 408
 409 # Configure extra directories which are host specific
 410
 411 case "${host}" in
 412   *-cygwin*)
 413     configdirs="$configdirs libtermcap" ;;
 414 esac
 415
 416 # A target can indicate whether a language isn't supported for some reason.
 417 # Only spaces may be used in this macro; not newlines or tabs.
 418 unsupported_languages=
 419
 420 # Remove more programs from consideration, based on the host or
 421 # target this usually means that a port of the program doesn't
 422 # exist yet.
 423
 424 case "${host}" in
 425   i[[3456789]]86-*-msdosdjgpp*)
 426     noconfigdirs="$noconfigdirs tcl tk itcl"
 427     ;;
 428 esac
 429
 430
 431 AC_ARG_ENABLE(libquadmath,
 432 AS_HELP_STRING([--disable-libquadmath],
 433   [do not build libquadmath directory]),
 434 ENABLE_LIBQUADMATH=$enableval,
 435 ENABLE_LIBQUADMATH=yes)
 436 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 437   noconfigdirs="$noconfigdirs target-libquadmath"
 438 fi
 439
 440
 441 AC_ARG_ENABLE(libquadmath-support,
 442 AS_HELP_STRING([--disable-libquadmath-support],
 443   [disable libquadmath support for Fortran]),
 444 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 445 ENABLE_LIBQUADMATH_SUPPORT=yes)
 446 enable_libquadmath_support=
 447 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 448   enable_libquadmath_support=no
 449 fi
 450
 451
 452 AC_ARG_ENABLE(libada,
 453 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 454 ENABLE_LIBADA=$enableval,
 455 ENABLE_LIBADA=yes)
 456 if test "${ENABLE_LIBADA}" != "yes" ; then
 457   noconfigdirs="$noconfigdirs gnattools"
 458 fi
 459
 460 AC_ARG_ENABLE(libssp,
 461 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 462 ENABLE_LIBSSP=$enableval,
 463 ENABLE_LIBSSP=yes)
 464
 465 AC_ARG_ENABLE(libstdcxx,
 466 AS_HELP_STRING([--disable-libstdcxx],
 467   [do not build libstdc++-v3 directory]),
 468 ENABLE_LIBSTDCXX=$enableval,
 469 ENABLE_LIBSTDCXX=default)
 470 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 471   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 472 fi]
 473
 474 # If this is accelerator compiler and its target is intelmic we enable
 475 # target liboffloadmic by default.  If this is compiler with offloading
 476 # for intelmic we enable host liboffloadmic by default.  Otherwise
 477 # liboffloadmic is disabled by default.
 478 AC_ARG_ENABLE([liboffloadmic],
 479 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 480                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 481 [case "$enableval" in
 482   no | host | target)
 483     enable_liboffloadmic=$enableval ;;
 484   *)
 485     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 486 esac],
 487 [if test x"$enable_as_accelerator_for" != x; then
 488   case "${target}" in
 489     *-intelmic-* | *-intelmicemul-*)
 490       enable_liboffloadmic=target
 491       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 492       ;;
 493     *)
 494       enable_liboffloadmic=no
 495       ;;
 496   esac
 497 else
 498   case "${enable_offload_targets}" in
 499     *-intelmic-* | *-intelmicemul-*)
 500       enable_liboffloadmic=host
 501       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 502       ;;
 503     *)
 504       enable_liboffloadmic=no
 505       ;;
 506     esac
 507 fi])
 508 AC_SUBST(extra_liboffloadmic_configure_flags)
 509
 510 # Save it here so that, even in case of --enable-libgcj, if the Java
 511 # front-end isn't enabled, we still get libgcj disabled.
 512 libgcj_saved=$libgcj
 513 case $enable_libgcj in
 514 yes)
 515   # If we reset it here, it won't get added to noconfigdirs in the
 516   # target-specific build rules, so it will be forcibly enabled
 517   # (unless the Java language itself isn't enabled).
 518   libgcj=
 519   ;;
 520 no)
 521   # Make sure we get it printed in the list of not supported target libs.
 522   # Don't disable libffi, though, other languages use it.
 523   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 524   # Clear libgcj_saved so that even if java is enabled libffi won't be
 525   # built.
 526   libgcj_saved=
 527   ;;
 528 esac
 529
 530 AC_ARG_ENABLE(static-libjava,
 531 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 532                 [build static libjava @<:@default=no@:>@])],
 533 ENABLE_STATIC_LIBJAVA=$enableval,
 534 ENABLE_STATIC_LIBJAVA=no)
 535 enable_static_libjava=
 536 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 537   enable_static_libjava=yes
 538 fi
 539
 540 if test x$enable_static_libjava != xyes ; then
 541   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 542 fi
 543 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 544
 545 # Enable libgomp by default on hosted POSIX systems, and a few others.
 546 if test x$enable_libgomp = x ; then
 547     case "${target}" in
 548     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 549         ;;
 550     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 551         ;;
 552     *-*-solaris2* | *-*-hpux11*)
 553         ;;
 554     *-*-darwin* | *-*-aix*)
 555         ;;
 556     nvptx*-*-*)
 557         ;;
 558     *)
 559         noconfigdirs="$noconfigdirs target-libgomp"
 560         ;;
 561     esac
 562 fi
 563
 564 # Disable libatomic on unsupported systems.
 565 if test -d ${srcdir}/libatomic; then
 566     if test x$enable_libatomic = x; then
 567         AC_MSG_CHECKING([for libatomic support])
 568         if (srcdir=${srcdir}/libatomic; \
 569                 . ${srcdir}/configure.tgt; \
 570                 test -n "$UNSUPPORTED")
 571         then
 572             AC_MSG_RESULT([no])
 573             noconfigdirs="$noconfigdirs target-libatomic"
 574         else
 575             AC_MSG_RESULT([yes])
 576         fi
 577     fi
 578 fi
 579
 580 # Disable libcilkrts on unsupported systems.
 581 if test -d ${srcdir}/libcilkrts; then
 582     if test x$enable_libcilkrts = x; then
 583         AC_MSG_CHECKING([for libcilkrts support])
 584         if (srcdir=${srcdir}/libcilkrts; \
 585                 . ${srcdir}/configure.tgt; \
 586                 test -n "$UNSUPPORTED")
 587         then
 588             AC_MSG_RESULT([no])
 589             noconfigdirs="$noconfigdirs target-libcilkrts"
 590         else
 591             AC_MSG_RESULT([yes])
 592         fi
 593     fi
 594 fi
 595
 596 # Disable liboffloadmic on unsupported systems.
 597 if test -d ${srcdir}/liboffloadmic; then
 598     if test x$enable_liboffloadmic != xno; then
 599         AC_MSG_CHECKING([for liboffloadmic support])
 600         if (srcdir=${srcdir}/liboffloadmic; \
 601                 . ${srcdir}/configure.tgt; \
 602                 test -n "$UNSUPPORTED")
 603         then
 604             AC_MSG_RESULT([no])
 605             noconfigdirs="$noconfigdirs target-liboffloadmic"
 606         else
 607             AC_MSG_RESULT([yes])
 608         fi
 609     fi
 610 fi
 611
 612 # Disable libitm on unsupported systems.
 613 if test -d ${srcdir}/libitm; then
 614     if test x$enable_libitm = x; then
 615         AC_MSG_CHECKING([for libitm support])
 616         if (srcdir=${srcdir}/libitm; \
 617                 . ${srcdir}/configure.tgt; \
 618                 test -n "$UNSUPPORTED")
 619         then
 620             AC_MSG_RESULT([no])
 621             noconfigdirs="$noconfigdirs target-libitm"
 622         else
 623             AC_MSG_RESULT([yes])
 624         fi
 625     fi
 626 fi
 627
 628 # Disable libsanitizer on unsupported systems.
 629 if test -d ${srcdir}/libsanitizer; then
 630     if test x$enable_libsanitizer = x; then
 631         AC_MSG_CHECKING([for libsanitizer support])
 632         if (srcdir=${srcdir}/libsanitizer; \
 633                 . ${srcdir}/configure.tgt; \
 634                 test -n "$UNSUPPORTED")
 635         then
 636             AC_MSG_RESULT([no])
 637             noconfigdirs="$noconfigdirs target-libsanitizer"
 638         else
 639             AC_MSG_RESULT([yes])
 640         fi
 641     fi
 642 fi
 643
 644 # Disable libvtv on unsupported systems.
 645 if test -d ${srcdir}/libvtv; then
 646     if test x$enable_libvtv = x; then
 647         AC_MSG_CHECKING([for libvtv support])
 648         if (srcdir=${srcdir}/libvtv; \
 649                 . ${srcdir}/configure.tgt; \
 650                 test "$VTV_SUPPORTED" != "yes")
 651         then
 652             AC_MSG_RESULT([no])
 653             noconfigdirs="$noconfigdirs target-libvtv"
 654         else
 655             AC_MSG_RESULT([yes])
 656         fi
 657     fi
 658 fi
 659
 660
 661 # Enable libmpx on supported systems by request.
 662 if test -d ${srcdir}/libmpx; then
 663     if test x$enable_libmpx = x; then
 664        AC_MSG_CHECKING([for libmpx support])
 665        if (srcdir=${srcdir}/libmpx; \
 666                . ${srcdir}/configure.tgt; \
 667                test "$LIBMPX_SUPPORTED" != "yes")
 668        then
 669            AC_MSG_RESULT([no])
 670            noconfigdirs="$noconfigdirs target-libmpx"
 671        else
 672            AC_MSG_RESULT([yes])
 673        fi
 674     fi
 675 fi
 676
 677
 678
 679 # Disable libquadmath for some systems.
 680 case "${target}" in
 681   avr-*-*)
 682     noconfigdirs="$noconfigdirs target-libquadmath"
 683     ;;
 684   # libquadmath is unused on AIX and libquadmath build process use of
 685   # LD_LIBRARY_PATH can break AIX bootstrap.
 686   powerpc-*-aix* | rs6000-*-aix*)
 687     noconfigdirs="$noconfigdirs target-libquadmath"
 688     ;;
 689 esac
 690
 691 # Disable libssp for some systems.
 692 case "${target}" in
 693   avr-*-*)
 694     # No hosted I/O support.
 695     noconfigdirs="$noconfigdirs target-libssp"
 696     ;;
 697   powerpc-*-aix* | rs6000-*-aix*)
 698     noconfigdirs="$noconfigdirs target-libssp"
 699     ;;
 700   rl78-*-*)
 701     # libssp uses a misaligned load to trigger a fault, but the RL78
 702     # doesn't fault for those - instead, it gives a build-time error
 703     # for explicit misaligned loads.
 704     noconfigdirs="$noconfigdirs target-libssp"
 705     ;;
 706   visium-*-*)
 707     # No hosted I/O support.
 708     noconfigdirs="$noconfigdirs target-libssp"
 709     ;;
 710 esac
 711
 712 # Disable libstdc++-v3 for some systems.
 713 # Allow user to override this if they pass --enable-libstdc++-v3
 714 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 715   case "${target}" in
 716     *-*-vxworks*)
 717       # VxWorks uses the Dinkumware C++ library.
 718       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 719       ;;
 720     arm*-wince-pe*)
 721       # the C++ libraries don't build on top of CE's C libraries
 722       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 723       ;;
 724     avr-*-*)
 725       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 726       ;;
 727     ft32-*-*)
 728       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 729       ;;
 730   esac
 731 fi
 732
 733 # Disable Fortran for some systems.
 734 case "${target}" in
 735   mmix-*-*)
 736     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 737     unsupported_languages="$unsupported_languages fortran"
 738     ;;
 739 esac
 740
 741 # Disable Java if libffi is not supported.
 742 case "${target}" in
 743   aarch64-*-*)
 744     ;;
 745   alpha*-*-*)
 746     ;;
 747   arm*-*-*)
 748     ;;
 749   cris-*-*)
 750     ;;
 751   frv-*-*)
 752     ;;
 753   hppa*-*-linux*)
 754     ;;
 755   hppa*-*-hpux*)
 756     ;;
 757   i?86-*-*)
 758     ;;
 759   ia64*-*-*)
 760     ;;
 761   m32r*-*-*)
 762     ;;
 763   m68k-*-*)
 764     ;;
 765   mips*-*-rtems*)
 766     ;;
 767   mips*-*-linux*)
 768     ;;
 769   powerpc*-*-linux*)
 770     ;;
 771   powerpc-*-darwin*)
 772     ;;
 773   powerpc-*-aix* | rs6000-*-aix*)
 774     ;;
 775   powerpc-*-freebsd*)
 776     ;;
 777   powerpc64-*-freebsd*)
 778     ;;
 779   powerpc*-*-rtems*)
 780     ;;
 781   s390-*-* | s390x-*-*)
 782     ;;
 783   sh-*-* | sh[[34]]*-*-*)
 784     ;;
 785   sparc*-*-*)
 786     ;;
 787   x86_64-*-*)
 788     ;;
 789   *-*-*)
 790     unsupported_languages="$unsupported_languages java"
 791     ;;
 792 esac
 793
 794 # Disable Java, libgcj or related libraries for some systems.
 795 case "${target}" in
 796   powerpc-*-darwin*)
 797     ;;
 798   i[[3456789]]86-*-darwin*)
 799     ;;
 800   x86_64-*-darwin[[912]]*)
 801     ;;
 802   *-*-darwin*)
 803     noconfigdirs="$noconfigdirs ${libgcj}"
 804     ;;
 805   *-*-netware*)
 806     noconfigdirs="$noconfigdirs ${libgcj}"
 807     ;;
 808   *-*-rtems*)
 809     noconfigdirs="$noconfigdirs ${libgcj}"
 810     ;;
 811   *-*-tpf*)
 812     noconfigdirs="$noconfigdirs ${libgcj}"
 813     ;;
 814   *-*-uclinux*)
 815     noconfigdirs="$noconfigdirs ${libgcj}"
 816     ;;
 817   *-*-vxworks*)
 818     noconfigdirs="$noconfigdirs ${libgcj}"
 819     ;;
 820   alpha*-*-*vms*)
 821     noconfigdirs="$noconfigdirs ${libgcj}"
 822     ;;
 823   arm*-*-freebsd*)
 824     noconfigdirs="$noconfigdirs ${libgcj}"
 825     ;;
 826   arm-wince-pe)
 827     noconfigdirs="$noconfigdirs ${libgcj}"
 828     ;;
 829   arm*-*-symbianelf*)
 830     noconfigdirs="$noconfigdirs ${libgcj}"
 831     ;;
 832   bfin-*-*)
 833     noconfigdirs="$noconfigdirs target-boehm-gc"
 834     ;;
 835   cris-*-* | crisv32-*-*)
 836     unsupported_languages="$unsupported_languages java"
 837     case "${target}" in
 838       *-*-linux*)
 839         ;;
 840       *) # See PR46792 regarding target-libffi.
 841         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 842     esac
 843     ;;
 844   hppa*64*-*-linux*)
 845     # In this case, it's because the hppa64-linux target is for
 846     # the kernel only at this point and has no libc, and thus no
 847     # headers, crt*.o, etc., all of which are needed by these.
 848     unsupported_languages="$unsupported_languages java"
 849     ;;
 850   hppa*64*-*-hpux*)
 851     noconfigdirs="$noconfigdirs ${libgcj}"
 852     ;;
 853   hppa*-hp-hpux11*)
 854     ;;
 855   hppa*-*-hpux*)
 856     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 857     # build on HP-UX 10.20.
 858     noconfigdirs="$noconfigdirs ${libgcj}"
 859     ;;
 860   ia64*-*-*vms*)
 861     noconfigdirs="$noconfigdirs ${libgcj}"
 862     ;;
 863   i[[3456789]]86-w64-mingw*)
 864     noconfigdirs="$noconfigdirs ${libgcj}"
 865     ;;
 866   i[[3456789]]86-*-mingw*)
 867     noconfigdirs="$noconfigdirs ${libgcj}"
 868     ;;
 869   x86_64-*-mingw*)
 870     noconfigdirs="$noconfigdirs ${libgcj}"
 871     ;;
 872   mmix-*-*)
 873     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 874     ;;
 875   powerpc-*-aix*)
 876     # copied from rs6000-*-* entry
 877     noconfigdirs="$noconfigdirs ${libgcj}"
 878     ;;
 879   rs6000-*-aix*)
 880     noconfigdirs="$noconfigdirs ${libgcj}"
 881     ;;
 882   ft32-*-*)
 883     noconfigdirs="$noconfigdirs ${libgcj}"
 884     ;;
 885   *-*-lynxos*)
 886     noconfigdirs="$noconfigdirs ${libgcj}"
 887     ;;
 888 esac
 889
 890 # Disable the go frontend on systems where it is known to not work. Please keep
 891 # this in sync with contrib/config-list.mk.
 892 case "${target}" in
 893 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 894     unsupported_languages="$unsupported_languages go"
 895     ;;
 896 esac
 897
 898 # Disable libgo for some systems where it is known to not work.
 899 # For testing, you can easily override this with --enable-libgo.
 900 if test x$enable_libgo = x; then
 901     case "${target}" in
 902     *-*-darwin*)
 903         # PR 46986
 904         noconfigdirs="$noconfigdirs target-libgo"
 905         ;;
 906     *-*-cygwin* | *-*-mingw*)
 907         noconfigdirs="$noconfigdirs target-libgo"
 908         ;;
 909     *-*-aix*)
 910         noconfigdirs="$noconfigdirs target-libgo"
 911         ;;
 912     esac
 913 fi
 914
 915 # Default libgloss CPU subdirectory.
 916 libgloss_dir="$target_cpu"
 917
 918 case "${target}" in
 919   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 920     libgloss_dir=wince
 921     ;;
 922   aarch64*-*-* )
 923     libgloss_dir=aarch64
 924     ;;
 925   arm*-*-*)
 926     libgloss_dir=arm
 927     ;;
 928   cris-*-* | crisv32-*-*)
 929     libgloss_dir=cris
 930     ;;
 931   hppa*-*-*)
 932     libgloss_dir=pa
 933     ;;
 934   i[[3456789]]86-*-*)
 935     libgloss_dir=i386
 936     ;;
 937   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 938     libgloss_dir=m68hc11
 939     ;;
 940   m68*-*-* | fido-*-*)
 941     libgloss_dir=m68k
 942     ;;
 943   mips*-*-*)
 944     libgloss_dir=mips
 945     ;;
 946   powerpc*-*-*)
 947     libgloss_dir=rs6000
 948     ;;
 949   sparc*-*-*)
 950     libgloss_dir=sparc
 951     ;;
 952 esac
 953
 954 # Disable newlib and libgloss for various target OSes.
 955 case "${target}" in
 956   alpha*-dec-osf*)
 957     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 958     ;;
 959   i[[3456789]]86-*-linux*)
 960     # This section makes it possible to build newlib natively on linux.
 961     # If we are using a cross compiler then don't configure newlib.
 962     if test x${is_cross_compiler} != xno ; then
 963       noconfigdirs="$noconfigdirs target-newlib"
 964     fi
 965     noconfigdirs="$noconfigdirs target-libgloss"
 966     # If we are not using a cross compiler, do configure newlib.
 967     # Note however, that newlib will only be configured in this situation
 968     # if the --with-newlib option has been given, because otherwise
 969     # 'target-newlib' will appear in skipdirs.
 970     ;;
 971   i[[3456789]]86-*-rdos*)
 972     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 973     ;;
 974   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 975     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 976     ;;
 977   sparc-*-sunos4*)
 978     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 979     ;;
 980   *-*-aix*)
 981     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 982     ;;
 983   *-*-beos*)
 984     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 985     ;;
 986   *-*-chorusos)
 987     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 988     ;;
 989   *-*-dragonfly*)
 990     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 991     ;;
 992   *-*-freebsd*)
 993     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 994     ;;
 995   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 996     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 997     ;;
 998   *-*-lynxos*)
 999     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1000     ;;
1001   *-*-mingw*)
1002     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1003     ;;
1004   *-*-netbsd*)
1005     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1006     ;;
1007   *-*-netware*)
1008     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1009     ;;
1010   *-*-tpf*)
1011     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1012     ;;
1013   *-*-uclinux*)
1014     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1015     ;;
1016   *-*-vxworks*)
1017     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1018     ;;
1019 esac
1020
1021 case "${target}" in
1022   *-*-chorusos)
1023     ;;
1024   aarch64-*-darwin*)
1025     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1026     noconfigdirs="$noconfigdirs sim target-rda"
1027     ;;
1028   arm-*-darwin*)
1029     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1030     noconfigdirs="$noconfigdirs sim target-rda"
1031     ;;
1032   powerpc-*-darwin*)
1033     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1034     noconfigdirs="$noconfigdirs sim target-rda"
1035     ;;
1036   i[[3456789]]86-*-darwin*)
1037     noconfigdirs="$noconfigdirs ld gprof"
1038     noconfigdirs="$noconfigdirs sim target-rda"
1039     ;;
1040   x86_64-*-darwin[[912]]*)
1041     noconfigdirs="$noconfigdirs ld gas gprof"
1042     noconfigdirs="$noconfigdirs sim target-rda"
1043     ;;
1044   *-*-darwin*)
1045     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1046     noconfigdirs="$noconfigdirs sim target-rda"
1047     ;;
1048   *-*-dragonfly*)
1049     ;;
1050   *-*-freebsd*)
1051     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
1052         && test -f /usr/local/include/gmp.h; then
1053       with_gmp=/usr/local
1054     fi
1055     ;;
1056   *-*-kaos*)
1057     # Remove unsupported stuff on all kaOS configurations.
1058     noconfigdirs="$noconfigdirs target-libgloss"
1059     ;;
1060   *-*-netbsd*)
1061     ;;
1062   *-*-netware*)
1063     ;;
1064   *-*-rtems*)
1065     noconfigdirs="$noconfigdirs target-libgloss"
1066     # this is not caught below because this stanza matches earlier
1067     case $target in
1068       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
1069     esac
1070     ;;
1071     # The tpf target doesn't support gdb yet.
1072   *-*-tpf*)
1073     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1074     ;;
1075   *-*-uclinux*)
1076     noconfigdirs="$noconfigdirs target-rda"
1077     ;;
1078   *-*-vxworks*)
1079     ;;
1080   alpha*-dec-osf*)
1081     # ld works, but does not support shared libraries.
1082     # gas doesn't generate exception information.
1083     noconfigdirs="$noconfigdirs gas ld"
1084     ;;
1085   alpha*-*-*vms*)
1086     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1087     ;;
1088   alpha*-*-*)
1089     # newlib is not 64 bit ready
1090     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1091     ;;
1092   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1093     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1094     ;;
1095   arm-*-pe*)
1096     noconfigdirs="$noconfigdirs target-libgloss"
1097     ;;
1098   arm-*-riscix*)
1099     noconfigdirs="$noconfigdirs ld target-libgloss"
1100     ;;
1101   avr-*-*)
1102     if test x${with_avrlibc} != xno; then
1103       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1104     fi
1105     ;;
1106   c4x-*-* | tic4x-*-*)
1107     noconfigdirs="$noconfigdirs target-libgloss"
1108     ;;
1109   tic54x-*-*)
1110     noconfigdirs="$noconfigdirs target-libgloss gdb"
1111     ;;
1112   d10v-*-*)
1113     noconfigdirs="$noconfigdirs target-libgloss"
1114     ;;
1115   d30v-*-*)
1116     noconfigdirs="$noconfigdirs gdb"
1117     ;;
1118   fr30-*-elf*)
1119     noconfigdirs="$noconfigdirs gdb"
1120     ;;
1121   ft32-*-*)
1122     noconfigdirs="$noconfigdirs target-rda gprof"
1123     ;;
1124   moxie-*-*)
1125     noconfigdirs="$noconfigdirs"
1126     ;;
1127   h8300*-*-*)
1128     noconfigdirs="$noconfigdirs target-libgloss"
1129     ;;
1130   h8500-*-*)
1131     noconfigdirs="$noconfigdirs target-libgloss"
1132     ;;
1133   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1134     ;;
1135   hppa*64*-*-hpux*)
1136     noconfigdirs="$noconfigdirs gdb"
1137     ;;
1138   hppa*-*-hpux11*)
1139     noconfigdirs="$noconfigdirs gdb ld"
1140     ;;
1141   hppa*64*-*-linux*)
1142     ;;
1143   hppa*-*-linux*)
1144     ;;
1145   hppa*-*-*elf* | \
1146   hppa*-*-lites* | \
1147   hppa*-*-openbsd* | \
1148   hppa*64*-*-*)
1149     ;;
1150   hppa*-*-pro*)
1151     ;;
1152   hppa*-*-*)
1153     noconfigdirs="$noconfigdirs ld"
1154     ;;
1155   i960-*-*)
1156     noconfigdirs="$noconfigdirs gdb"
1157     ;;
1158   ia64*-*-elf*)
1159     # No gdb support yet.
1160     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1161     ;;
1162   ia64*-**-hpux*)
1163     # No ld support yet.
1164     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1165     ;;
1166   ia64*-*-*vms*)
1167     # No ld support yet.
1168     noconfigdirs="$noconfigdirs libgui itcl ld"
1169     ;;
1170   i[[3456789]]86-w64-mingw*)
1171     ;;
1172   i[[3456789]]86-*-mingw*)
1173     target_configdirs="$target_configdirs target-winsup"
1174     ;;
1175   *-*-cygwin*)
1176     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1177     noconfigdirs="$noconfigdirs target-libgloss"
1178     # always build newlib if winsup directory is present.
1179     if test -d "$srcdir/winsup/cygwin"; then
1180       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1181     elif test -d "$srcdir/newlib"; then
1182       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1183     fi
1184     ;;
1185   i[[3456789]]86-*-pe)
1186     noconfigdirs="$noconfigdirs target-libgloss"
1187     ;;
1188   i[[3456789]]86-*-sco3.2v5*)
1189     # The linker does not yet know about weak symbols in COFF,
1190     # and is not configured to handle mixed ELF and COFF.
1191     noconfigdirs="$noconfigdirs ld target-libgloss"
1192     ;;
1193   i[[3456789]]86-*-sco*)
1194     noconfigdirs="$noconfigdirs gprof target-libgloss"
1195     ;;
1196   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1197     noconfigdirs="$noconfigdirs target-libgloss"
1198     ;;
1199   i[[3456789]]86-*-sysv4*)
1200     noconfigdirs="$noconfigdirs target-libgloss"
1201     ;;
1202   i[[3456789]]86-*-beos*)
1203     noconfigdirs="$noconfigdirs gdb"
1204     ;;
1205   i[[3456789]]86-*-rdos*)
1206     noconfigdirs="$noconfigdirs gdb"
1207     ;;
1208   mmix-*-*)
1209     noconfigdirs="$noconfigdirs gdb"
1210     ;;
1211   mt-*-*)
1212     noconfigdirs="$noconfigdirs sim"
1213     ;;
1214   powerpc-*-aix*)
1215     # copied from rs6000-*-* entry
1216     noconfigdirs="$noconfigdirs gprof"
1217     ;;
1218   powerpc*-*-winnt* | powerpc*-*-pe*)
1219     target_configdirs="$target_configdirs target-winsup"
1220     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1221     # always build newlib.
1222     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1223     ;;
1224     # This is temporary until we can link against shared libraries
1225   powerpcle-*-solaris*)
1226     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1227     ;;
1228   powerpc-*-beos*)
1229     noconfigdirs="$noconfigdirs gdb"
1230     ;;
1231   rs6000-*-lynxos*)
1232     noconfigdirs="$noconfigdirs gprof"
1233     ;;
1234   rs6000-*-aix*)
1235     noconfigdirs="$noconfigdirs gprof"
1236     ;;
1237   rs6000-*-*)
1238     noconfigdirs="$noconfigdirs gprof"
1239     ;;
1240   m68k-apollo-*)
1241     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1242     ;;
1243   microblaze*)
1244     noconfigdirs="$noconfigdirs gprof"
1245     ;;
1246   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1247     if test x$with_newlib = xyes; then
1248       noconfigdirs="$noconfigdirs gprof"
1249     fi
1250     ;;
1251   mips*-*-irix5*)
1252     noconfigdirs="$noconfigdirs gprof target-libgloss"
1253     ;;
1254   mips*-*-irix6*)
1255     noconfigdirs="$noconfigdirs gprof target-libgloss"
1256     ;;
1257   mips*-*-bsd*)
1258     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1259     ;;
1260   mips*-*-linux*)
1261     ;;
1262   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1263   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1264     noconfigdirs="$noconfigdirs ld gas gprof"
1265     ;;
1266   mips*-*-*)
1267     noconfigdirs="$noconfigdirs gprof"
1268     ;;
1269   nds32*-*-*)
1270     noconfigdirs="$noconfigdirs gdb"
1271     ;;
1272   nvptx*-*-*)
1273     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1274     ;;
1275   or1k*-*-*)
1276     noconfigdirs="$noconfigdirs gdb"
1277     ;;
1278   sh-*-*)
1279     case "${target}" in
1280       sh*-*-elf)
1281          ;;
1282       *)
1283          noconfigdirs="$noconfigdirs target-libgloss" ;;
1284     esac
1285     ;;
1286   sparc-*-sunos4*)
1287     if test x${is_cross_compiler} = xno ; then
1288            use_gnu_ld=no
1289     fi
1290     ;;
1291   tic6x-*-*)
1292     noconfigdirs="$noconfigdirs sim"
1293     ;;
1294   tilepro*-*-* | tilegx*-*-*)
1295     noconfigdirs="$noconfigdirs sim"
1296     ;;
1297   v810-*-*)
1298     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1299     ;;
1300   vax-*-*)
1301     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1302     ;;
1303 esac
1304
1305 # If we aren't building newlib, then don't build libgloss, since libgloss
1306 # depends upon some newlib header files.
1307 case "${noconfigdirs}" in
1308   *target-libgloss*) ;;
1309   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1310 esac
1311
1312 # Work in distributions that contain no compiler tools, like Autoconf.
1313 host_makefile_frag=/dev/null
1314 if test -d ${srcdir}/config ; then
1315 case "${host}" in
1316   i[[3456789]]86-*-msdosdjgpp*)
1317     host_makefile_frag="config/mh-djgpp"
1318     ;;
1319   *-cygwin*)
1320     ACX_CHECK_CYGWIN_CAT_WORKS
1321     host_makefile_frag="config/mh-cygwin"
1322     ;;
1323   *-mingw*)
1324     host_makefile_frag="config/mh-mingw"
1325     ;;
1326   alpha*-linux*)
1327     host_makefile_frag="config/mh-alpha-linux"
1328     ;;
1329   hppa*-hp-hpux10*)
1330     host_makefile_frag="config/mh-pa-hpux10"
1331     ;;
1332   hppa*-hp-hpux*)
1333     host_makefile_frag="config/mh-pa"
1334     ;;
1335   hppa*-*)
1336     host_makefile_frag="config/mh-pa"
1337     ;;
1338   *-*-darwin*)
1339     host_makefile_frag="config/mh-darwin"
1340     ;;
1341   powerpc-*-aix*)
1342     host_makefile_frag="config/mh-ppc-aix"
1343     ;;
1344   rs6000-*-aix*)
1345     host_makefile_frag="config/mh-ppc-aix"
1346     ;;
1347 esac
1348 fi
1349
1350 if test "${build}" != "${host}" ; then
1351   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1352   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1353   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1354   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1355   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1356   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1357   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1358   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1359   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1360   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1361   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1362   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1363   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1364 else
1365   AR_FOR_BUILD="\$(AR)"
1366   AS_FOR_BUILD="\$(AS)"
1367   CC_FOR_BUILD="\$(CC)"
1368   CXX_FOR_BUILD="\$(CXX)"
1369   GCJ_FOR_BUILD="\$(GCJ)"
1370   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1371   GOC_FOR_BUILD="\$(GOC)"
1372   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1373   LD_FOR_BUILD="\$(LD)"
1374   NM_FOR_BUILD="\$(NM)"
1375   RANLIB_FOR_BUILD="\$(RANLIB)"
1376   WINDRES_FOR_BUILD="\$(WINDRES)"
1377   WINDMC_FOR_BUILD="\$(WINDMC)"
1378 fi
1379
1380 AC_PROG_CC
1381 AC_PROG_CXX
1382
1383 # We must set the default linker to the linker used by gcc for the correct
1384 # operation of libtool.  If LD is not defined and we are using gcc, try to
1385 # set the LD default to the ld used by gcc.
1386 if test -z "$LD"; then
1387   if test "$GCC" = yes; then
1388     case $build in
1389     *-*-mingw*)
1390       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1391     *)
1392       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1393     esac
1394     case $gcc_prog_ld in
1395     # Accept absolute paths.
1396     [[\\/]* | [A-Za-z]:[\\/]*)]
1397       LD="$gcc_prog_ld" ;;
1398     esac
1399   fi
1400 fi
1401
1402 # Check whether -static-libstdc++ -static-libgcc is supported.
1403 have_static_libs=no
1404 if test "$GCC" = yes; then
1405   saved_LDFLAGS="$LDFLAGS"
1406
1407   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1408   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1409   AC_LANG_PUSH(C++)
1410   AC_LINK_IFELSE([
1411 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1412 #error -static-libstdc++ not implemented
1413 #endif
1414 int main() {}],
1415     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1416     [AC_MSG_RESULT([no])])
1417   AC_LANG_POP(C++)
1418
1419   LDFLAGS="$saved_LDFLAGS"
1420 fi
1421
1422 ACX_PROG_GNAT
1423 ACX_PROG_CMP_IGNORE_INITIAL
1424
1425 AC_ARG_ENABLE([bootstrap],
1426 [AS_HELP_STRING([--enable-bootstrap],
1427                 [enable bootstrapping @<:@yes if native build@:>@])],,
1428 enable_bootstrap=default)
1429
1430 # Issue errors and warnings for invalid/strange bootstrap combinations.
1431 if test -r $srcdir/gcc/configure; then
1432   have_compiler=yes
1433 else
1434   have_compiler=no
1435 fi
1436
1437 case "$have_compiler:$host:$target:$enable_bootstrap" in
1438   *:*:*:no) ;;
1439
1440   # Default behavior.  Enable bootstrap if we have a compiler
1441   # and we are in a native configuration.
1442   yes:$build:$build:default)
1443     enable_bootstrap=yes ;;
1444
1445   *:*:*:default)
1446     enable_bootstrap=no ;;
1447
1448   # We have a compiler and we are in a native configuration, bootstrap is ok
1449   yes:$build:$build:yes)
1450     ;;
1451
1452   # Other configurations, but we have a compiler.  Assume the user knows
1453   # what he's doing.
1454   yes:*:*:yes)
1455     AC_MSG_WARN([trying to bootstrap a cross compiler])
1456     ;;
1457
1458   # No compiler: if they passed --enable-bootstrap explicitly, fail
1459   no:*:*:yes)
1460     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1461
1462   # Fail if wrong command line
1463   *)
1464     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1465     ;;
1466 esac
1467
1468 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1469 # C++98 compiler can still start the bootstrap.
1470 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1471   CXX="$CXX -std=gnu++98"
1472 fi
1473
1474 # Used for setting $lt_cv_objdir
1475 _LT_CHECK_OBJDIR
1476
1477 # Check for GMP, MPFR and MPC
1478 gmplibs="-lmpc -lmpfr -lgmp"
1479 gmpinc=
1480 have_gmp=no
1481
1482 # Specify a location for mpc
1483 # check for this first so it ends up on the link line before mpfr.
1484 AC_ARG_WITH(mpc,
1485 [AS_HELP_STRING([--with-mpc=PATH],
1486                 [specify prefix directory for installed MPC package.
1487                  Equivalent to --with-mpc-include=PATH/include
1488                  plus --with-mpc-lib=PATH/lib])])
1489 AC_ARG_WITH(mpc-include,
1490 [AS_HELP_STRING([--with-mpc-include=PATH],
1491                 [specify directory for installed MPC include files])])
1492 AC_ARG_WITH(mpc-lib,
1493 [AS_HELP_STRING([--with-mpc-lib=PATH],
1494                 [specify directory for the installed MPC library])])
1495
1496 if test "x$with_mpc" != x; then
1497   gmplibs="-L$with_mpc/lib $gmplibs"
1498   gmpinc="-I$with_mpc/include $gmpinc"
1499 fi
1500 if test "x$with_mpc_include" != x; then
1501   gmpinc="-I$with_mpc_include $gmpinc"
1502 fi
1503 if test "x$with_mpc_lib" != x; then
1504   gmplibs="-L$with_mpc_lib $gmplibs"
1505 fi
1506 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1507   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1508   gmpinc='-I$$s/mpc/src '"$gmpinc"
1509   # Do not test the mpc version.  Assume that it is sufficient, since
1510   # it is in the source tree, and the library has not been built yet
1511   # but it would be included on the link line in the version check below
1512   # hence making the test fail.
1513   have_gmp=yes
1514 fi
1515
1516 # Specify a location for mpfr
1517 # check for this first so it ends up on the link line before gmp.
1518 AC_ARG_WITH(mpfr-dir,
1519 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1520 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1521 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1522
1523 AC_ARG_WITH(mpfr,
1524 [AS_HELP_STRING([--with-mpfr=PATH],
1525                 [specify prefix directory for installed MPFR package.
1526                  Equivalent to --with-mpfr-include=PATH/include
1527                  plus --with-mpfr-lib=PATH/lib])])
1528 AC_ARG_WITH(mpfr-include,
1529 [AS_HELP_STRING([--with-mpfr-include=PATH],
1530                 [specify directory for installed MPFR include files])])
1531 AC_ARG_WITH(mpfr-lib,
1532 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1533                 [specify directory for the installed MPFR library])])
1534
1535 if test "x$with_mpfr" != x; then
1536   gmplibs="-L$with_mpfr/lib $gmplibs"
1537   gmpinc="-I$with_mpfr/include $gmpinc"
1538 fi
1539 if test "x$with_mpfr_include" != x; then
1540   gmpinc="-I$with_mpfr_include $gmpinc"
1541 fi
1542 if test "x$with_mpfr_lib" != x; then
1543   gmplibs="-L$with_mpfr_lib $gmplibs"
1544 fi
1545 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1546   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1547   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1548   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1549   # Do not test the mpfr version.  Assume that it is sufficient, since
1550   # it is in the source tree, and the library has not been built yet
1551   # but it would be included on the link line in the version check below
1552   # hence making the test fail.
1553   have_gmp=yes
1554 fi
1555
1556 # Specify a location for gmp
1557 AC_ARG_WITH(gmp-dir,
1558 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1559 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1560 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1561
1562 AC_ARG_WITH(gmp,
1563 [AS_HELP_STRING([--with-gmp=PATH],
1564                 [specify prefix directory for the installed GMP package.
1565                  Equivalent to --with-gmp-include=PATH/include
1566                  plus --with-gmp-lib=PATH/lib])])
1567 AC_ARG_WITH(gmp-include,
1568 [AS_HELP_STRING([--with-gmp-include=PATH],
1569                 [specify directory for installed GMP include files])])
1570 AC_ARG_WITH(gmp-lib,
1571 [AS_HELP_STRING([--with-gmp-lib=PATH],
1572                 [specify directory for the installed GMP library])])
1573
1574
1575 if test "x$with_gmp" != x; then
1576   gmplibs="-L$with_gmp/lib $gmplibs"
1577   gmpinc="-I$with_gmp/include $gmpinc"
1578 fi
1579 if test "x$with_gmp_include" != x; then
1580   gmpinc="-I$with_gmp_include $gmpinc"
1581 fi
1582 if test "x$with_gmp_lib" != x; then
1583   gmplibs="-L$with_gmp_lib $gmplibs"
1584 fi
1585 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1586   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1587   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1588   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1589   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1590   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1591   # Do not test the gmp version.  Assume that it is sufficient, since
1592   # it is in the source tree, and the library has not been built yet
1593   # but it would be included on the link line in the version check below
1594   # hence making the test fail.
1595   have_gmp=yes
1596 fi
1597
1598 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1599   have_gmp=yes
1600   saved_CFLAGS="$CFLAGS"
1601   CFLAGS="$CFLAGS $gmpinc"
1602   # Check for the recommended and required versions of GMP.
1603   AC_MSG_CHECKING([for the correct version of gmp.h])
1604   AC_TRY_COMPILE([#include "gmp.h"],[
1605   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1606   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1607   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1608   choke me
1609   #endif
1610   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1611   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1612   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1613   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1614   choke me
1615   #endif
1616   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1617    [AC_MSG_RESULT([no]); have_gmp=no])
1618
1619   # If we have GMP, check the MPFR version.
1620   if test x"$have_gmp" = xyes; then
1621     # Check for the recommended and required versions of MPFR.
1622     AC_MSG_CHECKING([for the correct version of mpfr.h])
1623     AC_TRY_COMPILE([#include <gmp.h>
1624     #include <mpfr.h>],[
1625     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1626     choke me
1627     #endif
1628     ], [AC_TRY_COMPILE([#include <gmp.h>
1629     #include <mpfr.h>],[
1630     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1631     choke me
1632     #endif
1633     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1634      [AC_MSG_RESULT([no]); have_gmp=no])
1635   fi
1636
1637   # Check for the MPC header version.
1638   if test x"$have_gmp" = xyes ; then
1639     # Check for the recommended and required versions of MPC.
1640     AC_MSG_CHECKING([for the correct version of mpc.h])
1641     AC_TRY_COMPILE([#include <mpc.h>],[
1642     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1643     choke me
1644     #endif
1645     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1646     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1647     choke me
1648     #endif
1649     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1650      [AC_MSG_RESULT([no]); have_gmp=no])
1651   fi
1652
1653   # Now check the MPFR library.
1654   if test x"$have_gmp" = xyes; then
1655     saved_LIBS="$LIBS"
1656     LIBS="$LIBS $gmplibs"
1657     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1658     AC_TRY_LINK([#include <mpc.h>],[
1659     mpfr_t n;
1660     mpfr_t x;
1661     mpc_t c;
1662     int t;
1663     mpfr_init (n);
1664     mpfr_init (x);
1665     mpfr_atan2 (n, n, x, GMP_RNDN);
1666     mpfr_erfc (n, x, GMP_RNDN);
1667     mpfr_subnormalize (x, t, GMP_RNDN);
1668     mpfr_clear(n);
1669     mpfr_clear(x);
1670     mpc_init2 (c, 53);
1671     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1672     mpc_cosh (c, c, MPC_RNDNN);
1673     mpc_pow (c, c, c, MPC_RNDNN);
1674     mpc_acosh (c, c, MPC_RNDNN);
1675     mpc_clear (c);
1676     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1677     LIBS="$saved_LIBS"
1678   fi
1679
1680   CFLAGS="$saved_CFLAGS"
1681
1682 # The library versions listed in the error message below should match
1683 # the HARD-minimums enforced above.
1684   if test x$have_gmp != xyes; then
1685     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1686 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1687 their locations.  Source code for these libraries can be found at
1688 their respective hosting sites as well as at
1689 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1690 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1691 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1692 make sure that you have installed both the libraries and the header
1693 files.  They may be located in separate packages.])
1694   fi
1695 fi
1696
1697 # Flags needed for both GMP, MPFR and/or MPC.
1698 AC_SUBST(gmplibs)
1699 AC_SUBST(gmpinc)
1700 AC_SUBST(extra_mpfr_configure_flags)
1701 AC_SUBST(extra_mpc_gmp_configure_flags)
1702 AC_SUBST(extra_mpc_mpfr_configure_flags)
1703 AC_SUBST(extra_isl_gmp_configure_flags)
1704
1705 # Libraries to use for stage1 or when not bootstrapping.
1706 AC_ARG_WITH(stage1-libs,
1707 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1708 [if test "$withval" = "no" -o "$withval" = "yes"; then
1709    stage1_libs=
1710  else
1711    stage1_libs=$withval
1712  fi],
1713 [stage1_libs=])
1714 AC_SUBST(stage1_libs)
1715
1716 # Linker flags to use for stage1 or when not bootstrapping.
1717 AC_ARG_WITH(stage1-ldflags,
1718 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1719 [if test "$withval" = "no" -o "$withval" = "yes"; then
1720    stage1_ldflags=
1721  else
1722    stage1_ldflags=$withval
1723  fi],
1724 [stage1_ldflags=
1725  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1726  # if supported.  But if the user explicitly specified the libraries to use,
1727  # trust that they are doing what they want.
1728  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1729    stage1_ldflags="-static-libstdc++ -static-libgcc"
1730  fi])
1731 AC_SUBST(stage1_ldflags)
1732
1733 # Libraries to use for stage2 and later builds.
1734 AC_ARG_WITH(boot-libs,
1735 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1736 [if test "$withval" = "no" -o "$withval" = "yes"; then
1737    poststage1_libs=
1738  else
1739    poststage1_libs=$withval
1740  fi],
1741 [poststage1_libs=])
1742 AC_SUBST(poststage1_libs)
1743
1744 # Linker flags to use for stage2 and later builds.
1745 AC_ARG_WITH(boot-ldflags,
1746 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1747                 [linker flags for stage2 and later])],
1748 [if test "$withval" = "no" -o "$withval" = "yes"; then
1749    poststage1_ldflags=
1750  else
1751    poststage1_ldflags=$withval
1752  fi],
1753 [poststage1_ldflags=
1754  # In stages 2 and 3, default to linking libstdc++ and libgcc
1755  # statically.  But if the user explicitly specified the libraries to
1756  # use, trust that they are doing what they want.
1757  if test "$poststage1_libs" = ""; then
1758    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1759  fi])
1760 AC_SUBST(poststage1_ldflags)
1761
1762 # GCC GRAPHITE dependency isl.
1763 # Basic setup is inlined here, actual checks are in config/isl.m4
1764
1765 AC_ARG_WITH(isl,
1766   [AS_HELP_STRING(
1767    [--with-isl=PATH],
1768    [Specify prefix directory for the installed isl package.
1769     Equivalent to --with-isl-include=PATH/include
1770     plus --with-isl-lib=PATH/lib])])
1771
1772 # Treat --without-isl as a request to disable
1773 # GRAPHITE support and skip all following checks.
1774 if test "x$with_isl" != "xno"; then
1775   # Check for isl
1776   dnl Provide configure switches and initialize islinc & isllibs
1777   dnl with user input.
1778   ISL_INIT_FLAGS
1779   dnl The versions of isl that work for Graphite
1780   ISL_CHECK_VERSION()
1781   dnl Only execute fail-action, if isl has been requested.
1782   ISL_IF_FAILED([
1783     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1784 fi
1785
1786 # If the isl check failed, disable builds of in-tree variant of isl
1787 if test "x$with_isl" = xno ||
1788    test "x$gcc_cv_isl" = xno; then
1789   noconfigdirs="$noconfigdirs isl"
1790   islinc=
1791 fi
1792
1793 AC_SUBST(isllibs)
1794 AC_SUBST(islinc)
1795
1796 # Check for LTO support.
1797 AC_ARG_ENABLE(lto,
1798 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1799 enable_lto=$enableval,
1800 enable_lto=yes; default_enable_lto=yes)
1801
1802 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1803   build_lto_plugin=yes
1804 ],[if test x"$default_enable_lto" = x"yes" ; then
1805     case $target in
1806       *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
1807       # On other non-ELF platforms, LTO has yet to be validated.
1808       *) enable_lto=no ;;
1809     esac
1810   else
1811   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1812   # It would also be nice to check the binutils support, but we don't
1813   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1814   # warn during gcc/ subconfigure; unless you're bootstrapping with
1815   # -flto it won't be needed until after installation anyway.
1816     case $target in
1817       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1818       *) if test x"$enable_lto" = x"yes"; then
1819         AC_MSG_ERROR([LTO support is not enabled for this target.])
1820         fi
1821       ;;
1822     esac
1823   fi
1824   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1825   # Build it unless LTO was explicitly disabled.
1826   case $target in
1827     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1828     *) ;;
1829   esac
1830 ])
1831
1832 AC_ARG_ENABLE(linker-plugin-configure-flags,
1833   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1834     [additional flags for configuring linker plugins @<:@none@:>@])],
1835   extra_linker_plugin_configure_flags=$enableval,
1836   extra_linker_plugin_configure_flags=)
1837 AC_SUBST(extra_linker_plugin_configure_flags)
1838 AC_ARG_ENABLE(linker-plugin-flags,
1839   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1840     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1841   extra_linker_plugin_flags=$enableval,
1842   extra_linker_plugin_flags=)
1843 AC_SUBST(extra_linker_plugin_flags)
1844
1845
1846 # By default, C and C++ are the only stage 1 languages.
1847 stage1_languages=,c,
1848
1849 # Target libraries that we bootstrap.
1850 bootstrap_target_libs=,target-libgcc,
1851
1852 # Figure out what language subdirectories are present.
1853 # Look if the user specified --enable-languages="..."; if not, use
1854 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1855 # go away some day.
1856 # NB:  embedded tabs in this IF block -- do not untabify
1857 if test -d ${srcdir}/gcc; then
1858   if test x"${enable_languages+set}" != xset; then
1859     if test x"${LANGUAGES+set}" = xset; then
1860       enable_languages="${LANGUAGES}"
1861         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1862     else
1863       enable_languages=all
1864     fi
1865   else
1866     if test x"${enable_languages}" = x ||
1867        test x"${enable_languages}" = xyes;
1868        then
1869       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1870       exit 1
1871     fi
1872   fi
1873   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1874
1875   # 'f95' is the old name for the 'fortran' language. We issue a warning
1876   # and make the substitution.
1877   case ,${enable_languages}, in
1878     *,f95,*)
1879       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1880       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1881       ;;
1882   esac
1883
1884   # If bootstrapping, C++ must be enabled.
1885   case ",$enable_languages,:$enable_bootstrap" in
1886     *,c++,*:*) ;;
1887     *:yes)
1888       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1889         enable_languages="${enable_languages},c++"
1890       else
1891         AC_MSG_ERROR([bootstrapping requires c++ sources])
1892       fi
1893       ;;
1894   esac
1895
1896   # First scan to see if an enabled language requires some other language.
1897   # We assume that a given config-lang.in will list all the language
1898   # front ends it requires, even if some are required indirectly.
1899   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1900     case ${lang_frag} in
1901       ..) ;;
1902       # The odd quoting in the next line works around
1903       # an apparent bug in bash 1.12 on linux.
1904       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1905       *)
1906         # From the config-lang.in, get $language, $lang_requires, and
1907         # $lang_requires_boot_languages.
1908         language=
1909         lang_requires=
1910         lang_requires_boot_languages=
1911         . ${lang_frag}
1912         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1913           case ,${enable_languages}, in
1914             *,$other,*) ;;
1915             *,all,*) ;;
1916             *,$language,*)
1917               echo " \`$other' language required by \`$language'; enabling" 1>&2
1918               enable_languages="${enable_languages},${other}"
1919               ;;
1920           esac
1921         done
1922         for other in ${lang_requires_boot_languages} ; do
1923           if test "$other" != "c"; then
1924             case ,${enable_stage1_languages}, in
1925               *,$other,*) ;;
1926               *,all,*) ;;
1927               *)
1928                 case ,${enable_languages}, in
1929                   *,$language,*)
1930                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1931                     enable_stage1_languages="$enable_stage1_languages,${other}"
1932                     ;;
1933                 esac
1934                 ;;
1935             esac
1936           fi
1937         done
1938         ;;
1939     esac
1940   done
1941
1942   new_enable_languages=,c,
1943
1944   # If LTO is enabled, add the LTO front end.
1945   if test "$enable_lto" = "yes" ; then
1946     case ,${enable_languages}, in
1947       *,lto,*) ;;
1948       *) enable_languages="${enable_languages},lto" ;;
1949     esac
1950     if test "${build_lto_plugin}" = "yes" ; then
1951       configdirs="$configdirs lto-plugin"
1952     fi
1953   fi
1954
1955   # If we're building an offloading compiler, add the LTO front end.
1956   if test x"$enable_as_accelerator_for" != x ; then
1957     case ,${enable_languages}, in
1958       *,lto,*) ;;
1959       *) enable_languages="${enable_languages},lto" ;;
1960     esac
1961   fi
1962
1963   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1964   potential_languages=,c,
1965
1966   enabled_target_libs=
1967   disabled_target_libs=
1968
1969   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1970     case ${lang_frag} in
1971       ..) ;;
1972       # The odd quoting in the next line works around
1973       # an apparent bug in bash 1.12 on linux.
1974       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1975       *)
1976         # From the config-lang.in, get $language, $target_libs,
1977         # $lang_dirs, $boot_language, and $build_by_default
1978         language=
1979         target_libs=
1980         lang_dirs=
1981         subdir_requires=
1982         boot_language=no
1983         build_by_default=yes
1984         . ${lang_frag}
1985         if test x${language} = x; then
1986           echo "${lang_frag} doesn't set \$language." 1>&2
1987           exit 1
1988         fi
1989
1990         if test "$language" = "c++"; then
1991           boot_language=yes
1992         fi
1993
1994         add_this_lang=no
1995         case ,${enable_languages}, in
1996           *,${language},*)
1997             # Language was explicitly selected; include it
1998             # unless it is C, which is enabled by default.
1999             if test "$language" != "c"; then
2000               add_this_lang=yes
2001             fi
2002             ;;
2003           *,all,*)
2004             # 'all' was selected, select it if it is a default language
2005             if test "$language" != "c"; then
2006               add_this_lang=${build_by_default}
2007             fi
2008             ;;
2009         esac
2010
2011         # Disable languages that need other directories if these aren't available.
2012         for i in $subdir_requires; do
2013           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2014           case ,${enable_languages}, in
2015             *,${language},*)
2016               # Specifically requested language; tell them.
2017               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2018               ;;
2019             *)
2020               # Silently disable.
2021               add_this_lang=unsupported
2022               ;;
2023           esac
2024         done
2025
2026         # Disable Ada if no preexisting GNAT is available.
2027         case ,${enable_languages},:${language}:${have_gnat} in
2028           *,${language},*:ada:no)
2029             # Specifically requested language; tell them.
2030             AC_MSG_ERROR([GNAT is required to build $language])
2031             ;;
2032           *:ada:no)
2033             # Silently disable.
2034             add_this_lang=unsupported
2035             ;;
2036         esac
2037
2038         # Disable a language that is unsupported by the target.
2039         case " $unsupported_languages " in
2040           *" $language "*)
2041             add_this_lang=unsupported
2042             ;;
2043         esac
2044
2045         case $add_this_lang in
2046           unsupported)
2047             # Remove language-dependent dirs.
2048             disabled_target_libs="$disabled_target_libs $target_libs"
2049             noconfigdirs="$noconfigdirs $lang_dirs"
2050             ;;
2051           no)
2052             # Remove language-dependent dirs; still show language as supported.
2053             disabled_target_libs="$disabled_target_libs $target_libs"
2054             noconfigdirs="$noconfigdirs $lang_dirs"
2055             potential_languages="${potential_languages}${language},"
2056             ;;
2057           yes)
2058             new_enable_languages="${new_enable_languages}${language},"
2059             potential_languages="${potential_languages}${language},"
2060             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2061             enabled_target_libs="$enabled_target_libs $target_libs"
2062             case "${boot_language}:,$enable_stage1_languages," in
2063               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2064                 # Add to (comma-separated) list of stage 1 languages.
2065                 case ",$stage1_languages," in
2066                   *,$language,* | ,yes, | ,all,) ;;
2067                   *) stage1_languages="${stage1_languages}${language}," ;;
2068                 esac
2069                 # We need to bootstrap any supporting libraries.
2070                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2071                 ;;
2072             esac
2073             ;;
2074         esac
2075         ;;
2076     esac
2077   done
2078
2079   # Add target libraries which are only needed for disabled languages
2080   # to noconfigdirs.
2081   if test -n "$disabled_target_libs"; then
2082     for dir in $disabled_target_libs; do
2083       case " $enabled_target_libs " in
2084       *" ${dir} "*) ;;
2085       *) noconfigdirs="$noconfigdirs $dir" ;;
2086       esac
2087     done
2088   fi
2089
2090   AC_ARG_ENABLE(stage1-languages,
2091   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2092                   [choose additional languages to build during
2093                   stage1.  Mostly useful for compiler development])],
2094   [case ,${enable_stage1_languages}, in
2095     ,no,|,,)
2096       # Set it to something that will have no effect in the loop below
2097       enable_stage1_languages=c ;;
2098     ,yes,)
2099       enable_stage1_languages=`echo $new_enable_languages | \
2100         sed -e "s/^,//" -e "s/,$//" ` ;;
2101     *,all,*)
2102       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2103         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2104   esac
2105
2106   # Add "good" languages from enable_stage1_languages to stage1_languages,
2107   # while "bad" languages go in missing_languages.  Leave no duplicates.
2108   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2109     case $potential_languages in
2110       *,$i,*)
2111         case $stage1_languages in
2112           *,$i,*) ;;
2113           *) stage1_languages="$stage1_languages$i," ;;
2114         esac ;;
2115       *)
2116         case $missing_languages in
2117           *,$i,*) ;;
2118           *) missing_languages="$missing_languages$i," ;;
2119         esac ;;
2120      esac
2121   done])
2122
2123   # Remove leading/trailing commas that were added for simplicity
2124   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2125   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2126   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2127   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2128
2129   if test "x$missing_languages" != x; then
2130     AC_MSG_ERROR([
2131 The following requested languages could not be built: ${missing_languages}
2132 Supported languages are: ${potential_languages}])
2133   fi
2134   if test "x$new_enable_languages" != "x$enable_languages"; then
2135     echo The following languages will be built: ${new_enable_languages}
2136     enable_languages="$new_enable_languages"
2137   fi
2138
2139   AC_SUBST(stage1_languages)
2140   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2141 fi
2142
2143 # Handle --disable-<component> generically.
2144 for dir in $configdirs $build_configdirs $target_configdirs ; do
2145   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2146   varname=`echo $dirname | sed -e s/+/_/g`
2147   if eval test x\${enable_${varname}} "=" xno ; then
2148     noconfigdirs="$noconfigdirs $dir"
2149   fi
2150 done
2151
2152 # Check for Boehm's garbage collector
2153 AC_ARG_ENABLE(objc-gc,
2154 [AS_HELP_STRING([--enable-objc-gc],
2155                 [enable use of Boehm's garbage collector with the
2156                  GNU Objective-C runtime])],
2157 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2158   *,objc,*:*:yes:*target-boehm-gc*)
2159     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2160     ;;
2161 esac])
2162
2163 # Make sure we only build Boehm's garbage collector if required.
2164 case ,${enable_languages},:${enable_objc_gc} in
2165   *,objc,*:yes)
2166     # Keep target-boehm-gc if requested for Objective-C.
2167     ;;
2168   *)
2169     # Otherwise remove target-boehm-gc depending on target-libjava.
2170     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2171       noconfigdirs="$noconfigdirs target-boehm-gc"
2172     fi
2173     ;;
2174 esac
2175
2176 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2177 case ,${enable_languages}, in
2178   *,c++,*)
2179     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2180     case "${noconfigdirs}" in
2181       *target-libstdc++-v3*)
2182         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2183         ;;
2184       *) ;;
2185     esac
2186     ;;
2187   *)
2188     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2189     ;;
2190 esac
2191
2192 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2193 # $build_configdirs and $target_configdirs.
2194 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2195
2196 notsupp=""
2197 for dir in . $skipdirs $noconfigdirs ; do
2198   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2199   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2200     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2201     if test -r $srcdir/$dirname/configure ; then
2202       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2203         true
2204       else
2205         notsupp="$notsupp $dir"
2206       fi
2207     fi
2208   fi
2209   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2210     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2211     if test -r $srcdir/$dirname/configure ; then
2212       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2213         true
2214       else
2215         notsupp="$notsupp $dir"
2216       fi
2217     fi
2218   fi
2219   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2220     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2221     if test -r $srcdir/$dirname/configure ; then
2222       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2223         true
2224       else
2225         notsupp="$notsupp $dir"
2226       fi
2227     fi
2228   fi
2229 done
2230
2231 # Quietly strip out all directories which aren't configurable in this tree.
2232 # This relies on all configurable subdirectories being autoconfiscated, which
2233 # is now the case.
2234 build_configdirs_all="$build_configdirs"
2235 build_configdirs=
2236 for i in ${build_configdirs_all} ; do
2237   j=`echo $i | sed -e s/build-//g`
2238   if test -f ${srcdir}/$j/configure ; then
2239     build_configdirs="${build_configdirs} $i"
2240   fi
2241 done
2242
2243 configdirs_all="$configdirs"
2244 configdirs=
2245 for i in ${configdirs_all} ; do
2246   if test -f ${srcdir}/$i/configure ; then
2247     configdirs="${configdirs} $i"
2248   fi
2249 done
2250
2251 target_configdirs_all="$target_configdirs"
2252 target_configdirs=
2253 for i in ${target_configdirs_all} ; do
2254   j=`echo $i | sed -e s/target-//g`
2255   if test -f ${srcdir}/$j/configure ; then
2256     target_configdirs="${target_configdirs} $i"
2257   fi
2258 done
2259
2260 # Exclude target-zlib if target-libjava isn't built.
2261 case ${target_configdirs} in
2262 *target-libjava*)
2263   ;;
2264 *)
2265   target_configdirs="`echo ${target_configdirs} | sed -e 's/target-zlib//'`"
2266   ;;
2267 esac
2268
2269 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2270 # so we have to add it after the preceding checks.
2271 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2272 then
2273   case " $configdirs " in
2274     *" libiberty "*)
2275       # If we can build libiberty, we can also build libiberty-linker-plugin.
2276       configdirs="$configdirs libiberty-linker-plugin"
2277       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2278         --with-libiberty=../libiberty-linker-plugin";;
2279     *)
2280       AC_MSG_ERROR([libiberty missing]);;
2281   esac
2282 fi
2283
2284 # Sometimes we have special requirements for the host libiberty.
2285 extra_host_libiberty_configure_flags=
2286 extra_host_zlib_configure_flags=
2287 case " $configdirs " in
2288   *" lto-plugin "* | *" libcc1 "*)
2289     # When these are to be built as shared libraries, the same applies to
2290     # libiberty.
2291     extra_host_libiberty_configure_flags=--enable-shared
2292     ;;
2293   *" bfd "*)
2294     # When bfd is to be built as a shared library, the same applies to
2295     # zlib.
2296     if test "$enable_shared" = "yes"; then
2297       extra_host_zlib_configure_flags=--enable-host-shared
2298     fi
2299     ;;
2300 esac
2301 AC_SUBST(extra_host_libiberty_configure_flags)
2302 AC_SUBST(extra_host_zlib_configure_flags)
2303
2304 # Produce a warning message for the subdirs we can't configure.
2305 # This isn't especially interesting in the Cygnus tree, but in the individual
2306 # FSF releases, it's important to let people know when their machine isn't
2307 # supported by the one or two programs in a package.
2308
2309 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2310   # If $appdirs is non-empty, at least one of those directories must still
2311   # be configured, or we error out.  (E.g., if the gas release supports a
2312   # specified target in some subdirs but not the gas subdir, we shouldn't
2313   # pretend that all is well.)
2314   if test -n "$appdirs" ; then
2315     for dir in $appdirs ; do
2316       if test -r $dir/Makefile.in ; then
2317         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2318           appdirs=""
2319           break
2320         fi
2321         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2322           appdirs=""
2323           break
2324         fi
2325       fi
2326     done
2327     if test -n "$appdirs" ; then
2328       echo "*** This configuration is not supported by this package." 1>&2
2329       exit 1
2330     fi
2331   fi
2332   # Okay, some application will build, or we don't care to check.  Still
2333   # notify of subdirs not getting built.
2334   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2335   echo "    ${notsupp}" 1>&2
2336   echo "    (Any other directories should still work fine.)" 1>&2
2337 fi
2338
2339 case "$host" in
2340   *msdosdjgpp*)
2341     enable_gdbtk=no ;;
2342 esac
2343
2344 # To find our prefix, in gcc_cv_tool_prefix.
2345 ACX_TOOL_DIRS
2346
2347 copy_dirs=
2348
2349 AC_ARG_WITH([build-sysroot],
2350   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2351                   [use sysroot as the system root during the build])],
2352   [if test x"$withval" != x ; then
2353      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2354    fi],
2355   [SYSROOT_CFLAGS_FOR_TARGET=])
2356 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2357
2358 AC_ARG_WITH([debug-prefix-map],
2359   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2360                   [map A to B, C to D ... in debug information])],
2361   [if test x"$withval" != x; then
2362      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2363      for debug_map in $withval; do
2364        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2365      done
2366    fi],
2367   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2368 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2369
2370 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2371 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2372 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2373 # We want to ensure that TARGET libraries (which we know are built with
2374 # gcc) are built with "-O2 -g", so include those options when setting
2375 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2376 if test "x$CFLAGS_FOR_TARGET" = x; then
2377   if test "x${is_cross_compiler}" = xyes; then
2378     CFLAGS_FOR_TARGET="-g -O2"
2379   else
2380     CFLAGS_FOR_TARGET=$CFLAGS
2381     case " $CFLAGS " in
2382       *" -O2 "*) ;;
2383       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2384     esac
2385     case " $CFLAGS " in
2386       *" -g "* | *" -g3 "*) ;;
2387       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2388     esac
2389   fi
2390 fi
2391 AC_SUBST(CFLAGS_FOR_TARGET)
2392
2393 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2394   if test "x${is_cross_compiler}" = xyes; then
2395     CXXFLAGS_FOR_TARGET="-g -O2"
2396   else
2397     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2398     case " $CXXFLAGS " in
2399       *" -O2 "*) ;;
2400       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2401     esac
2402     case " $CXXFLAGS " in
2403       *" -g "* | *" -g3 "*) ;;
2404       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2405     esac
2406   fi
2407 fi
2408 AC_SUBST(CXXFLAGS_FOR_TARGET)
2409
2410 AC_SUBST(LDFLAGS_FOR_TARGET)
2411
2412 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2413 # the named directory are copied to $(tooldir)/sys-include.
2414 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2415   if test x${is_cross_compiler} = xno ; then
2416     echo 1>&2 '***' --with-headers is only supported when cross compiling
2417     exit 1
2418   fi
2419   if test x"${with_headers}" != xyes ; then
2420     x=${gcc_cv_tool_prefix}
2421     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2422   fi
2423 fi
2424
2425 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2426 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2427 # are permitted.
2428 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2429   if test x${is_cross_compiler} = xno ; then
2430     echo 1>&2 '***' --with-libs is only supported when cross compiling
2431     exit 1
2432   fi
2433   if test x"${with_libs}" != xyes ; then
2434     # Copy the libraries in reverse order, so that files in the first named
2435     # library override files in subsequent libraries.
2436     x=${gcc_cv_tool_prefix}
2437     for l in ${with_libs}; do
2438       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2439     done
2440   fi
2441 fi
2442
2443 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2444 #
2445 # This is done by determining whether or not the appropriate directory
2446 # is available, and by checking whether or not specific configurations
2447 # have requested that this magic not happen.
2448 #
2449 # The command line options always override the explicit settings in
2450 # configure.ac, and the settings in configure.ac override this magic.
2451 #
2452 # If the default for a toolchain is to use GNU as and ld, and you don't
2453 # want to do that, then you should use the --without-gnu-as and
2454 # --without-gnu-ld options for the configure script.  Similarly, if
2455 # the default is to use the included zlib and you don't want to do that,
2456 # you should use the --with-system-zlib option for the configure script.
2457
2458 if test x${use_gnu_as} = x &&
2459    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2460   with_gnu_as=yes
2461   extra_host_args="$extra_host_args --with-gnu-as"
2462 fi
2463
2464 if test x${use_gnu_ld} = x &&
2465    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2466   with_gnu_ld=yes
2467   extra_host_args="$extra_host_args --with-gnu-ld"
2468 fi
2469
2470 if test x${use_included_zlib} = x &&
2471    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2472   :
2473 else
2474   with_system_zlib=yes
2475   extra_host_args="$extra_host_args --with-system-zlib"
2476 fi
2477
2478 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2479 # can detect this case.
2480
2481 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2482   with_newlib=yes
2483   extra_host_args="$extra_host_args --with-newlib"
2484 fi
2485
2486 # Handle ${copy_dirs}
2487 set fnord ${copy_dirs}
2488 shift
2489 while test $# != 0 ; do
2490   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2491     :
2492   else
2493     echo Copying $1 to $2
2494
2495     # Use the install script to create the directory and all required
2496     # parent directories.
2497     if test -d $2 ; then
2498       :
2499     else
2500       echo >config.temp
2501       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2502     fi
2503
2504     # Copy the directory, assuming we have tar.
2505     # FIXME: Should we use B in the second tar?  Not all systems support it.
2506     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2507
2508     # It is the responsibility of the user to correctly adjust all
2509     # symlinks.  If somebody can figure out how to handle them correctly
2510     # here, feel free to add the code.
2511
2512     echo $1 > $2/COPIED
2513   fi
2514   shift; shift
2515 done
2516
2517 # Determine a target-dependent exec_prefix that the installed
2518 # gcc will search in.  Keep this list sorted by triplet, with
2519 # the *-*-osname triplets last.
2520 md_exec_prefix=
2521 case "${target}" in
2522   i[[34567]]86-pc-msdosdjgpp*)
2523     md_exec_prefix=/dev/env/DJDIR/bin
2524     ;;
2525   *-*-hpux* | \
2526   *-*-nto-qnx* | \
2527   *-*-solaris2*)
2528     md_exec_prefix=/usr/ccs/bin
2529     ;;
2530 esac
2531
2532 extra_arflags_for_target=
2533 extra_nmflags_for_target=
2534 extra_ranlibflags_for_target=
2535 target_makefile_frag=/dev/null
2536 case "${target}" in
2537   spu-*-*)
2538     target_makefile_frag="config/mt-spu"
2539     ;;
2540   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2541     target_makefile_frag="config/mt-sde"
2542     ;;
2543   mipsisa*-*-elfoabi*)
2544     target_makefile_frag="config/mt-mips-elfoabi"
2545     ;;
2546   mips*-*-*linux* | mips*-*-gnu*)
2547     target_makefile_frag="config/mt-mips-gnu"
2548     ;;
2549   nios2-*-elf*)
2550     target_makefile_frag="config/mt-nios2-elf"
2551     ;;
2552   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2553     target_makefile_frag="config/mt-gnu"
2554     ;;
2555   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2556     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2557     # commands to handle both 32-bit and 64-bit objects.  These flags are
2558     # harmless if we're using GNU nm or ar.
2559     extra_arflags_for_target=" -X32_64"
2560     extra_nmflags_for_target=" -B -X32_64"
2561     ;;
2562 esac
2563
2564 alphaieee_frag=/dev/null
2565 case $target in
2566   alpha*-*-*)
2567     # This just makes sure to use the -mieee option to build target libs.
2568     # This should probably be set individually by each library.
2569     alphaieee_frag="config/mt-alphaieee"
2570     ;;
2571 esac
2572
2573 # If --enable-target-optspace always use -Os instead of -O2 to build
2574 # the target libraries, similarly if it is not specified, use -Os
2575 # on selected platforms.
2576 ospace_frag=/dev/null
2577 case "${enable_target_optspace}:${target}" in
2578   yes:*)
2579     ospace_frag="config/mt-ospace"
2580     ;;
2581   :d30v-*)
2582     ospace_frag="config/mt-d30v"
2583     ;;
2584   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2585     ospace_frag="config/mt-ospace"
2586     ;;
2587   no:* | :*)
2588     ;;
2589   *)
2590     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2591     ;;
2592 esac
2593
2594 # Some systems (e.g., one of the i386-aix systems the gas testers are
2595 # using) don't handle "\$" correctly, so don't use it here.
2596 tooldir='${exec_prefix}'/${target_noncanonical}
2597 build_tooldir=${tooldir}
2598
2599 # Create a .gdbinit file which runs the one in srcdir
2600 # and tells GDB to look there for source files.
2601
2602 if test -r ${srcdir}/.gdbinit ; then
2603   case ${srcdir} in
2604     .) ;;
2605     *) cat > ./.gdbinit <<EOF
2606 # ${NO_EDIT}
2607 dir ${srcdir}
2608 dir .
2609 source ${srcdir}/.gdbinit
2610 EOF
2611     ;;
2612   esac
2613 fi
2614
2615 # Make sure that the compiler is able to generate an executable.  If it
2616 # can't, we are probably in trouble.  We don't care whether we can run the
2617 # executable--we might be using a cross compiler--we only care whether it
2618 # can be created.  At this point the main configure script has set CC.
2619 we_are_ok=no
2620 echo "int main () { return 0; }" > conftest.c
2621 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2622 if test $? = 0 ; then
2623   if test -s conftest || test -s conftest.exe ; then
2624     we_are_ok=yes
2625   fi
2626 fi
2627 case $we_are_ok in
2628   no)
2629     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2630     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2631     rm -f conftest*
2632     exit 1
2633     ;;
2634 esac
2635 rm -f conftest*
2636
2637 # Decide which environment variable is used to find dynamic libraries.
2638 case "${host}" in
2639   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2640   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2641   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2642   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2643 esac
2644
2645 # On systems where the dynamic library environment variable is PATH,
2646 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2647 # built executables to PATH.
2648 if test "$RPATH_ENVVAR" = PATH; then
2649   GCC_SHLIB_SUBDIR=/shlib
2650 else
2651   GCC_SHLIB_SUBDIR=
2652 fi
2653
2654 # Adjust the toplevel makefile according to whether bootstrap was selected.
2655 case $enable_bootstrap in
2656   yes)
2657     bootstrap_suffix=bootstrap
2658     BUILD_CONFIG=bootstrap-debug
2659     ;;
2660   no)
2661     bootstrap_suffix=no-bootstrap
2662     BUILD_CONFIG=
2663     ;;
2664 esac
2665
2666 AC_MSG_CHECKING(for default BUILD_CONFIG)
2667
2668 AC_ARG_WITH([build-config],
2669   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2670                   [use config/NAME.mk build configuration])],
2671   [case $with_build_config in
2672    yes) with_build_config= ;;
2673    no) with_build_config= BUILD_CONFIG= ;;
2674    esac])
2675
2676 if test "x${with_build_config}" != x; then
2677   BUILD_CONFIG=$with_build_config
2678 else
2679   case $BUILD_CONFIG in
2680   bootstrap-debug)
2681     if echo "int f (void) { return 0; }" > conftest.c &&
2682        ${CC} -c conftest.c &&
2683        mv conftest.o conftest.o.g0 &&
2684        ${CC} -c -g conftest.c &&
2685        mv conftest.o conftest.o.g &&
2686        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2687       :
2688     else
2689       BUILD_CONFIG=
2690     fi
2691     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2692     ;;
2693   esac
2694 fi
2695 AC_MSG_RESULT($BUILD_CONFIG)
2696 AC_SUBST(BUILD_CONFIG)
2697
2698 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2699 AC_MSG_CHECKING([for --enable-vtable-verify])
2700 AC_ARG_ENABLE(vtable-verify,
2701 [AS_HELP_STRING([--enable-vtable-verify],
2702                 [Enable vtable verification feature])],
2703 [case "$enableval" in
2704  yes) enable_vtable_verify=yes ;;
2705  no)  enable_vtable_verify=no ;;
2706  *)   enable_vtable_verify=no;;
2707  esac],
2708 [enable_vtable_verify=no])
2709 AC_MSG_RESULT($enable_vtable_verify)
2710
2711 # Record target_configdirs and the configure arguments for target and
2712 # build configuration in Makefile.
2713 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2714 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2715 bootstrap_fixincludes=no
2716
2717 # If we are building libgomp, bootstrap it.
2718 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2719   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2720 fi
2721
2722 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2723 # or bootstrap-ubsan, bootstrap it.
2724 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2725   case "$BUILD_CONFIG" in
2726     *bootstrap-asan* | *bootstrap-ubsan* )
2727       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2728       bootstrap_fixincludes=yes
2729       ;;
2730   esac
2731 fi
2732
2733 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2734 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2735    test "$enable_vtable_verify" != no; then
2736   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2737 fi
2738
2739 # If we are building libmpx, bootstrap it.
2740 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2741   bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2742 fi
2743
2744 # Determine whether gdb needs tk/tcl or not.
2745 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2746 # and in that case we want gdb to be built without tk.  Ugh!
2747 # In fact I believe gdb is the *only* package directly dependent on tk,
2748 # so we should be able to put the 'maybe's in unconditionally and
2749 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2750 # 100% sure that that's safe though.
2751
2752 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2753 case "$enable_gdbtk" in
2754   no)
2755     GDB_TK="" ;;
2756   yes)
2757     GDB_TK="${gdb_tk}" ;;
2758   *)
2759     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2760     # distro.  Eventually someone will fix this and move Insight, nee
2761     # gdbtk to a separate directory.
2762     if test -d ${srcdir}/gdb/gdbtk ; then
2763       GDB_TK="${gdb_tk}"
2764     else
2765       GDB_TK=""
2766     fi
2767     ;;
2768 esac
2769 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2770 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2771
2772 # Strip out unwanted targets.
2773
2774 # While at that, we remove Makefiles if we were started for recursive
2775 # configuration, so that the top-level Makefile reconfigures them,
2776 # like we used to do when configure itself was recursive.
2777
2778 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2779 # but now we're fixing up the Makefile ourselves with the additional
2780 # commands passed to AC_CONFIG_FILES.  Use separate variables
2781 # extrasub-{build,host,target} not because there is any reason to split
2782 # the substitutions up that way, but only to remain below the limit of
2783 # 99 commands in a script, for HP-UX sed.
2784 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2785
2786 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2787   yes:yes:*\ gold\ *:*,c++,*) ;;
2788   yes:yes:*\ gold\ *:*)
2789     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2790     ;;
2791 esac
2792
2793 extrasub_build=
2794 for module in ${build_configdirs} ; do
2795   if test -z "${no_recursion}" \
2796      && test -f ${build_subdir}/${module}/Makefile; then
2797     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2798     rm -f ${build_subdir}/${module}/Makefile
2799   fi
2800   extrasub_build="$extrasub_build
2801 /^@if build-$module\$/d
2802 /^@endif build-$module\$/d
2803 /^@if build-$module-$bootstrap_suffix\$/d
2804 /^@endif build-$module-$bootstrap_suffix\$/d"
2805 done
2806 extrasub_host=
2807 for module in ${configdirs} ; do
2808   if test -z "${no_recursion}"; then
2809     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2810       if test -f ${file}; then
2811         echo 1>&2 "*** removing ${file} to force reconfigure"
2812         rm -f ${file}
2813       fi
2814     done
2815   fi
2816   case ${module},${bootstrap_fixincludes} in
2817     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2818     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2819   esac
2820   extrasub_host="$extrasub_host
2821 /^@if $module\$/d
2822 /^@endif $module\$/d
2823 /^@if $module-$host_bootstrap_suffix\$/d
2824 /^@endif $module-$host_bootstrap_suffix\$/d"
2825 done
2826 extrasub_target=
2827 for module in ${target_configdirs} ; do
2828   if test -z "${no_recursion}" \
2829      && test -f ${target_subdir}/${module}/Makefile; then
2830     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2831     rm -f ${target_subdir}/${module}/Makefile
2832   fi
2833
2834   # We only bootstrap target libraries listed in bootstrap_target_libs.
2835   case $bootstrap_target_libs in
2836     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2837     *) target_bootstrap_suffix=no-bootstrap ;;
2838   esac
2839
2840   extrasub_target="$extrasub_target
2841 /^@if target-$module\$/d
2842 /^@endif target-$module\$/d
2843 /^@if target-$module-$target_bootstrap_suffix\$/d
2844 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2845 done
2846
2847 # Do the final fixup along with target modules.
2848 extrasub_target="$extrasub_target
2849 /^@if /,/^@endif /d"
2850
2851 # Create the serialization dependencies.  This uses a temporary file.
2852
2853 AC_ARG_ENABLE([serial-configure],
2854 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2855                 [force sequential configuration of
2856                  sub-packages for the host, target or build
2857                  machine, or all sub-packages])])
2858
2859 case ${enable_serial_configure} in
2860   yes)
2861     enable_serial_build_configure=yes
2862     enable_serial_host_configure=yes
2863     enable_serial_target_configure=yes
2864     ;;
2865 esac
2866
2867 # These force 'configure's to be done one at a time, to avoid problems
2868 # with contention over a shared config.cache.
2869 rm -f serdep.tmp
2870 echo '# serdep.tmp' > serdep.tmp
2871 olditem=
2872 test "x${enable_serial_build_configure}" = xyes &&
2873 for item in ${build_configdirs} ; do
2874   case ${olditem} in
2875     "") ;;
2876     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2877   esac
2878   olditem=${item}
2879 done
2880 olditem=
2881 test "x${enable_serial_host_configure}" = xyes &&
2882 for item in ${configdirs} ; do
2883   case ${olditem} in
2884     "") ;;
2885     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2886   esac
2887   olditem=${item}
2888 done
2889 olditem=
2890 test "x${enable_serial_target_configure}" = xyes &&
2891 for item in ${target_configdirs} ; do
2892   case ${olditem} in
2893     "") ;;
2894     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2895   esac
2896   olditem=${item}
2897 done
2898 serialization_dependencies=serdep.tmp
2899 AC_SUBST_FILE(serialization_dependencies)
2900
2901 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2902 # target, nonopt, and variable assignments.  These are the ones we
2903 # might not want to pass down to subconfigures.  The exception being
2904 # --cache-file=/dev/null, which is used to turn off the use of cache
2905 # files altogether, and which should be passed on to subconfigures.
2906 # Also strip program-prefix, program-suffix, and program-transform-name,
2907 # so that we can pass down a consistent program-transform-name.
2908 baseargs=
2909 tbaseargs=
2910 keep_next=no
2911 skip_next=no
2912 eval "set -- $ac_configure_args"
2913 for ac_arg
2914 do
2915   if test X"$skip_next" = X"yes"; then
2916     skip_next=no
2917     continue
2918   fi
2919   if test X"$keep_next" = X"yes"; then
2920     case $ac_arg in
2921       *\'*)
2922         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2923     esac
2924     baseargs="$baseargs '$ac_arg'"
2925     tbaseargs="$tbaseargs '$ac_arg'"
2926     keep_next=no
2927     continue
2928   fi
2929
2930   # Handle separated arguments.  Based on the logic generated by
2931   # autoconf 2.59.
2932   case $ac_arg in
2933     *=* | --config-cache | -C | -disable-* | --disable-* \
2934       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2935       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2936       | -with-* | --with-* | -without-* | --without-* | --x)
2937       separate_arg=no
2938       ;;
2939     -*)
2940       separate_arg=yes
2941       ;;
2942     *)
2943       separate_arg=no
2944       ;;
2945   esac
2946
2947   skip_targ=no
2948   case $ac_arg in
2949 changequote(,)
2950   --with-* | --without-*)
2951     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2952
2953     case $libopt in
2954     *[-_]include)
2955       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2956       ;;
2957     *[-_]lib)
2958       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2959       ;;
2960     *)
2961       lib=$libopt
2962       ;;
2963     esac
2964 changequote([,])
2965
2966     case $lib in
2967     mpc | mpfr | gmp | isl)
2968       # If we're processing --with-$lib, --with-$lib-include or
2969       # --with-$lib-lib, for one of the libs above, and target is
2970       # different from host, don't pass the current argument to any
2971       # target library's configure.
2972       if test x$is_cross_compiler = xyes; then
2973         skip_targ=yes
2974       fi
2975       ;;
2976     esac
2977     ;;
2978   esac
2979
2980   case "$ac_arg" in
2981     --cache-file=/dev/null | \
2982     -cache-file=/dev/null )
2983       # Handled here to avoid the test to skip args below.
2984       baseargs="$baseargs '$ac_arg'"
2985       tbaseargs="$tbaseargs '$ac_arg'"
2986       # Assert: $separate_arg should always be no.
2987       keep_next=$separate_arg
2988       ;;
2989     --no*)
2990       continue
2991       ;;
2992     --c* | \
2993     --sr* | \
2994     --ho* | \
2995     --bu* | \
2996     --t* | \
2997     --program-* | \
2998     -cache_file* | \
2999     -srcdir* | \
3000     -host* | \
3001     -build* | \
3002     -target* | \
3003     -program-prefix* | \
3004     -program-suffix* | \
3005     -program-transform-name* )
3006       skip_next=$separate_arg
3007       continue
3008       ;;
3009     -*)
3010       # An option.  Add it.
3011       case $ac_arg in
3012         *\'*)
3013           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3014       esac
3015       baseargs="$baseargs '$ac_arg'"
3016       if test X"$skip_targ" = Xno; then
3017         tbaseargs="$tbaseargs '$ac_arg'"
3018       fi
3019       keep_next=$separate_arg
3020       ;;
3021     *)
3022       # Either a variable assignment, or a nonopt (triplet).  Don't
3023       # pass it down; let the Makefile handle this.
3024       continue
3025       ;;
3026   esac
3027 done
3028 # Remove the initial space we just introduced and, as these will be
3029 # expanded by make, quote '$'.
3030 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3031
3032 # Add in --program-transform-name, after --program-prefix and
3033 # --program-suffix have been applied to it.  Autoconf has already
3034 # doubled dollar signs and backslashes in program_transform_name; we want
3035 # the backslashes un-doubled, and then the entire thing wrapped in single
3036 # quotes, because this will be expanded first by make and then by the shell.
3037 # Also, because we want to override the logic in subdir configure scripts to
3038 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3039 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3040 ${program_transform_name}
3041 EOF_SED
3042 gcc_transform_name=`cat conftestsed.out`
3043 rm -f conftestsed.out
3044 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3045 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3046 if test "$silent" = yes; then
3047   baseargs="$baseargs --silent"
3048   tbaseargs="$tbaseargs --silent"
3049 fi
3050 baseargs="$baseargs --disable-option-checking"
3051 tbaseargs="$tbaseargs --disable-option-checking"
3052
3053 # Record and document user additions to sub configure arguments.
3054 AC_ARG_VAR([build_configargs],
3055            [additional configure arguments for build directories])
3056 AC_ARG_VAR([host_configargs],
3057            [additional configure arguments for host directories])
3058 AC_ARG_VAR([target_configargs],
3059            [additional configure arguments for target directories])
3060
3061 # For the build-side libraries, we just need to pretend we're native,
3062 # and not use the same cache file.  Multilibs are neither needed nor
3063 # desired.  We can't even use the same cache file for all build-side
3064 # libraries, as they're compiled differently; some with C, some with
3065 # C++ or with different feature-enabling options.
3066 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3067
3068 # For host modules, accept cache file option, or specification as blank.
3069 case "${cache_file}" in
3070 "") # empty
3071   cache_file_option="" ;;
3072 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3073   cache_file_option="--cache-file=${cache_file}" ;;
3074 *) # relative path
3075   cache_file_option="--cache-file=../${cache_file}" ;;
3076 esac
3077
3078 # Host dirs don't like to share a cache file either, horribly enough.
3079 # This seems to be due to autoconf 2.5x stupidity.
3080 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3081
3082 target_configargs="$target_configargs ${tbaseargs}"
3083
3084 # Passing a --with-cross-host argument lets the target libraries know
3085 # whether they are being built with a cross-compiler or being built
3086 # native.  However, it would be better to use other mechanisms to make the
3087 # sorts of decisions they want to make on this basis.  Please consider
3088 # this option to be deprecated.  FIXME.
3089 if test x${is_cross_compiler} = xyes ; then
3090   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3091 fi
3092
3093 # Special user-friendly check for native x86_64-linux build, if
3094 # multilib is not explicitly enabled.
3095 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3096   x86_64-*linux*:yes:$build:$build:)
3097     # Make sure we have a development environment that handles 32-bit
3098     dev64=no
3099     echo "int main () { return 0; }" > conftest.c
3100     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3101     if test $? = 0 ; then
3102       if test -s conftest || test -s conftest.exe ; then
3103         dev64=yes
3104       fi
3105     fi
3106     rm -f conftest*
3107     if test x${dev64} != xyes ; then
3108       AC_MSG_ERROR([I suspect your system does not have 32-bit development libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib.])
3109     fi
3110     ;;
3111 esac
3112
3113 # Default to --enable-multilib.
3114 if test x${enable_multilib} = x ; then
3115   target_configargs="--enable-multilib ${target_configargs}"
3116 fi
3117
3118 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3119 # changed from the earlier setting of with_newlib.
3120 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3121   target_configargs="--with-newlib ${target_configargs}"
3122 fi
3123
3124 # Different target subdirs use different values of certain variables
3125 # (notably CXX).  Worse, multilibs use *lots* of different values.
3126 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3127 # it doesn't automatically accept command-line overrides of them.
3128 # This means it's not safe for target subdirs to share a cache file,
3129 # which is disgusting, but there you have it.  Hopefully this can be
3130 # fixed in future.  It's still worthwhile to use a cache file for each
3131 # directory.  I think.
3132
3133 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3134 # We need to pass --target, as newer autoconf's requires consistency
3135 # for target_alias and gcc doesn't manage it consistently.
3136 target_configargs="--cache-file=./config.cache ${target_configargs}"
3137
3138 FLAGS_FOR_TARGET=
3139 case " $target_configdirs " in
3140  *" newlib "*)
3141   case " $target_configargs " in
3142   *" --with-newlib "*)
3143    case "$target" in
3144     *-cygwin*)
3145       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3146       ;;
3147    esac
3148
3149    # If we're not building GCC, don't discard standard headers.
3150    if test -d ${srcdir}/gcc; then
3151      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3152
3153      if test "${build}" != "${host}"; then
3154        # On Canadian crosses, CC_FOR_TARGET will have already been set
3155        # by `configure', so we won't have an opportunity to add -Bgcc/
3156        # to it.  This is right: we don't want to search that directory
3157        # for binaries, but we want the header files in there, so add
3158        # them explicitly.
3159        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3160
3161        # Someone might think of using the pre-installed headers on
3162        # Canadian crosses, in case the installed compiler is not fully
3163        # compatible with the compiler being built.  In this case, it
3164        # would be better to flag an error than risking having
3165        # incompatible object files being constructed.  We can't
3166        # guarantee that an error will be flagged, but let's hope the
3167        # compiler will do it, when presented with incompatible header
3168        # files.
3169      fi
3170    fi
3171
3172    case "${target}-${is_cross_compiler}" in
3173    i[[3456789]]86-*-linux*-no)
3174       # Here host == target, so we don't need to build gcc,
3175       # so we don't want to discard standard headers.
3176       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3177       ;;
3178    *)
3179       # If we're building newlib, use its generic headers last, but search
3180       # for any libc-related directories first (so make it the last -B
3181       # switch).
3182       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3183
3184       # If we're building libgloss, find the startup file, simulator library
3185       # and linker script.
3186       case " $target_configdirs " in
3187         *" libgloss "*)
3188         # Look for startup file, simulator library and maybe linker script.
3189         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3190         # Look for libnosys.a in case the target needs it.
3191         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3192         # Most targets have the linker script in the source directory.
3193         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3194         ;;
3195       esac
3196       ;;
3197    esac
3198    ;;
3199   esac
3200   ;;
3201 esac
3202
3203 case "$target" in
3204   x86_64-*mingw* | *-w64-mingw*)
3205   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3206   # however, use a symlink named 'mingw' in ${prefix} .
3207     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3208     ;;
3209   *-mingw*)
3210   # MinGW can't be handled as Cygwin above since it does not use newlib.
3211     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3212     ;;
3213 esac
3214
3215 # Allow the user to override the flags for
3216 # our build compiler if desired.
3217 if test x"${build}" = x"${host}" ; then
3218   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3219   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3220   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3221 fi
3222
3223 # On Canadian crosses, we'll be searching the right directories for
3224 # the previously-installed cross compiler, so don't bother to add
3225 # flags for directories within the install tree of the compiler
3226 # being built; programs in there won't even run.
3227 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3228   # Search for pre-installed headers if nothing else fits.
3229   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3230 fi
3231
3232 if test "x${use_gnu_ld}" = x &&
3233    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3234   # Arrange for us to find uninstalled linker scripts.
3235   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3236 fi
3237
3238 # Search for other target-specific linker scripts and such.
3239 case "${target}" in
3240   mep*)
3241     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3242     ;;
3243 esac
3244
3245 # Makefile fragments.
3246 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3247 do
3248   eval fragval=\$$frag
3249   if test $fragval != /dev/null; then
3250     eval $frag=${srcdir}/$fragval
3251   fi
3252 done
3253 AC_SUBST_FILE(host_makefile_frag)
3254 AC_SUBST_FILE(target_makefile_frag)
3255 AC_SUBST_FILE(alphaieee_frag)
3256 AC_SUBST_FILE(ospace_frag)
3257
3258 # Miscellanea: directories, flags, etc.
3259 AC_SUBST(RPATH_ENVVAR)
3260 AC_SUBST(GCC_SHLIB_SUBDIR)
3261 AC_SUBST(tooldir)
3262 AC_SUBST(build_tooldir)
3263 AC_SUBST(CONFIGURE_GDB_TK)
3264 AC_SUBST(GDB_TK)
3265 AC_SUBST(INSTALL_GDB_TK)
3266
3267 # Build module lists & subconfigure args.
3268 AC_SUBST(build_configargs)
3269 AC_SUBST(build_configdirs)
3270
3271 # Host module lists & subconfigure args.
3272 AC_SUBST(host_configargs)
3273 AC_SUBST(configdirs)
3274 AC_SUBST(target_configdirs)
3275
3276 # Target module lists & subconfigure args.
3277 AC_SUBST(target_configargs)
3278
3279
3280 # Build tools.
3281 AC_SUBST(AR_FOR_BUILD)
3282 AC_SUBST(AS_FOR_BUILD)
3283 AC_SUBST(CC_FOR_BUILD)
3284 AC_SUBST(CFLAGS_FOR_BUILD)
3285 AC_SUBST(CXXFLAGS_FOR_BUILD)
3286 AC_SUBST(CXX_FOR_BUILD)
3287 AC_SUBST(DLLTOOL_FOR_BUILD)
3288 AC_SUBST(GCJ_FOR_BUILD)
3289 AC_SUBST(GFORTRAN_FOR_BUILD)
3290 AC_SUBST(GOC_FOR_BUILD)
3291 AC_SUBST(LDFLAGS_FOR_BUILD)
3292 AC_SUBST(LD_FOR_BUILD)
3293 AC_SUBST(NM_FOR_BUILD)
3294 AC_SUBST(RANLIB_FOR_BUILD)
3295 AC_SUBST(WINDMC_FOR_BUILD)
3296 AC_SUBST(WINDRES_FOR_BUILD)
3297
3298 # Generate default definitions for YACC, M4, LEX and other programs that run
3299 # on the build machine.  These are used if the Makefile can't locate these
3300 # programs in objdir.
3301 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3302
3303 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3304 case " $build_configdirs " in
3305   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3306 esac
3307
3308 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3309 case " $build_configdirs " in
3310   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3311 esac
3312
3313 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3314 case " $build_configdirs " in
3315   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3316 esac
3317
3318 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3319 case " $build_configdirs " in
3320   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3321   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3322 esac
3323
3324 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3325 case " $build_configdirs " in
3326   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3327 esac
3328
3329 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3330 case " $build_configdirs " in
3331   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3332   *)
3333 changequote(,)
3334     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3335     # higher, else we use the "missing" dummy.
3336     if ${MAKEINFO} --version \
3337        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3338       :
3339     else
3340       MAKEINFO="$MISSING makeinfo"
3341     fi
3342     ;;
3343 changequote([,])
3344 esac
3345
3346 # FIXME: expect and dejagnu may become build tools?
3347
3348 AC_CHECK_PROGS(EXPECT, expect, expect)
3349 case " $configdirs " in
3350   *" expect "*)
3351     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3352     ;;
3353 esac
3354
3355 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3356 case " $configdirs " in
3357   *" dejagnu "*)
3358     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3359     ;;
3360 esac
3361
3362
3363 # Host tools.
3364 NCN_STRICT_CHECK_TOOLS(AR, ar)
3365 NCN_STRICT_CHECK_TOOLS(AS, as)
3366 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3367 NCN_STRICT_CHECK_TOOLS(LD, ld)
3368 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3369 NCN_STRICT_CHECK_TOOLS(NM, nm)
3370 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3371 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3372 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3373 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3374 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3375 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3376 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3377 AC_SUBST(CC)
3378 AC_SUBST(CXX)
3379 AC_SUBST(CFLAGS)
3380 AC_SUBST(CXXFLAGS)
3381
3382 # Target tools.
3383 AC_ARG_WITH([build-time-tools],
3384   [AS_HELP_STRING([--with-build-time-tools=PATH],
3385                   [use given path to find target tools during the build])],
3386   [case x"$withval" in
3387      x/*) ;;
3388      *)
3389        with_build_time_tools=
3390        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3391        ;;
3392    esac],
3393   [with_build_time_tools=])
3394
3395 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3396 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3397 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3398 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3399 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3400 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3401
3402 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3403 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3404 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3405 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3406 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3407 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3408 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3409 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3410 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3411 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3412 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3413 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3414 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3415
3416 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3417
3418 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3419 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3420 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3421 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3422 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3423                 [gcc/xg++ -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$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3424                 c++)
3425 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3426                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3427                 c++)
3428 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3429 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3430 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3431                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3432 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3433                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3434 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3435                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3436 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3437 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3438 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3439 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3440 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3441 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3442 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3443 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3444 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3445 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3446
3447 AC_SUBST(FLAGS_FOR_TARGET)
3448 AC_SUBST(RAW_CXX_FOR_TARGET)
3449
3450 # Certain tools may need extra flags.
3451 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3452 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3453 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3454
3455 # When building target libraries, except in a Canadian cross, we use
3456 # the same toolchain as the compiler we just built.
3457 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3458 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3459 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3460 if test $host = $build; then
3461   case " $configdirs " in
3462     *" gcc "*)
3463       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3464       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3465       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3466       ;;
3467   esac
3468 fi
3469
3470 AC_SUBST(COMPILER_AS_FOR_TARGET)
3471 AC_SUBST(COMPILER_LD_FOR_TARGET)
3472 AC_SUBST(COMPILER_NM_FOR_TARGET)
3473
3474 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3475 AC_ARG_ENABLE(maintainer-mode,
3476 [AS_HELP_STRING([--enable-maintainer-mode],
3477                 [enable make rules and dependencies not useful
3478                  (and sometimes confusing) to the casual installer])],
3479       USE_MAINTAINER_MODE=$enableval,
3480       USE_MAINTAINER_MODE=no)
3481 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3482 AC_SUBST(MAINTAINER_MODE_TRUE)
3483 AC_SUBST(MAINTAINER_MODE_FALSE)
3484 if test "$USE_MAINTAINER_MODE" = yes; then
3485   MAINTAINER_MODE_TRUE=
3486   MAINTAINER_MODE_FALSE='#'
3487 else
3488   MAINTAINER_MODE_TRUE='#'
3489   MAINTAINER_MODE_FALSE=
3490 fi
3491 MAINT=$MAINTAINER_MODE_TRUE
3492 AC_SUBST(MAINT)dnl
3493
3494 # ---------------------
3495 # GCC bootstrap support
3496 # ---------------------
3497
3498 # Stage specific cflags for build.
3499 stage1_cflags="-g"
3500 case $build in
3501   vax-*-*)
3502     case ${GCC} in
3503       yes) stage1_cflags="-g -Wa,-J" ;;
3504       *) stage1_cflags="-g -J" ;;
3505     esac ;;
3506 esac
3507
3508 AC_SUBST(stage1_cflags)
3509
3510 # Enable --enable-checking in stage1 of the compiler.
3511 AC_ARG_ENABLE(stage1-checking,
3512 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3513                 [choose additional checking for stage1 of the compiler])],
3514 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3515 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3516   # For --disable-checking or implicit --enable-checking=release, avoid
3517   # setting --enable-checking=gc in the default stage1 checking for LTO
3518   # bootstraps.  See PR62077.
3519   case $BUILD_CONFIG in
3520     *lto*)
3521       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3522     *)
3523       stage1_checking=--enable-checking=yes,types;;
3524   esac
3525   if test "x$enable_checking" = x && \
3526      test -d ${srcdir}/gcc && \
3527      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3528     stage1_checking=--enable-checking=yes,types,extra
3529   fi
3530 else
3531   stage1_checking=--enable-checking=$enable_checking,types
3532 fi])
3533 AC_SUBST(stage1_checking)
3534
3535 # Enable -Werror in bootstrap stage2 and later.
3536 AC_ARG_ENABLE(werror,
3537 [AS_HELP_STRING([--enable-werror],
3538                 [enable -Werror in bootstrap stage2 and later])], [],
3539 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3540   enable_werror=yes
3541 else
3542   enable_werror=no
3543 fi])
3544 case ${enable_werror} in
3545   yes) stage2_werror_flag="--enable-werror-always" ;;
3546   *) stage2_werror_flag="" ;;
3547 esac
3548 AC_SUBST(stage2_werror_flag)
3549
3550 # Enable --enable-host-shared.
3551 AC_ARG_ENABLE(host-shared,
3552 [AS_HELP_STRING([--enable-host-shared],
3553                 [build host code as shared libraries])],
3554 [host_shared=$enableval], [host_shared=no])
3555 AC_SUBST(host_shared)
3556
3557 # PR jit/64780: Require the user to explicitly specify
3558 # --enable-host-shared if the jit is enabled, hinting
3559 # that they might want to do a separate configure/build of
3560 # the jit, to avoid users from slowing down the rest of the
3561 # compiler by enabling the jit.
3562 if test ${host_shared} = "no" ; then
3563   case "${enable_languages}" in
3564     *jit*)
3565       AC_MSG_ERROR([
3566 Enabling language "jit" requires --enable-host-shared.
3567
3568 --enable-host-shared typically slows the rest of the compiler down by
3569 a few %, so you must explicitly enable it.
3570
3571 If you want to build both the jit and the regular compiler, it is often
3572 best to do this via two separate configure/builds, in separate
3573 directories, to avoid imposing the performance cost of
3574 --enable-host-shared on the regular compiler.])
3575       ;;
3576     *)
3577       ;;
3578   esac
3579 fi
3580
3581 # Specify what files to not compare during bootstrap.
3582
3583 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3584 case "$target" in
3585   hppa*64*-*-hpux*) ;;
3586   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3587   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3588 esac
3589 AC_SUBST(compare_exclusions)
3590
3591 AC_CONFIG_FILES([Makefile],
3592   [sed "$extrasub_build" Makefile |
3593    sed "$extrasub_host" |
3594    sed "$extrasub_target" > mf$$
3595    mv -f mf$$ Makefile],
3596   [extrasub_build="$extrasub_build"
3597    extrasub_host="$extrasub_host"
3598    extrasub_target="$extrasub_target"])
3599 AC_OUTPUT