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-*-rtems*)
1102     ;;
1103   avr-*-*)
1104     if test x${with_avrlibc} != xno; then
1105       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1106     fi
1107     ;;
1108   c4x-*-* | tic4x-*-*)
1109     noconfigdirs="$noconfigdirs target-libgloss"
1110     ;;
1111   tic54x-*-*)
1112     noconfigdirs="$noconfigdirs target-libgloss gdb"
1113     ;;
1114   d10v-*-*)
1115     noconfigdirs="$noconfigdirs target-libgloss"
1116     ;;
1117   d30v-*-*)
1118     noconfigdirs="$noconfigdirs gdb"
1119     ;;
1120   fr30-*-elf*)
1121     noconfigdirs="$noconfigdirs gdb"
1122     ;;
1123   ft32-*-*)
1124     noconfigdirs="$noconfigdirs target-rda gprof"
1125     ;;
1126   moxie-*-*)
1127     noconfigdirs="$noconfigdirs"
1128     ;;
1129   h8300*-*-*)
1130     noconfigdirs="$noconfigdirs target-libgloss"
1131     ;;
1132   h8500-*-*)
1133     noconfigdirs="$noconfigdirs target-libgloss"
1134     ;;
1135   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1136     ;;
1137   hppa*64*-*-hpux*)
1138     noconfigdirs="$noconfigdirs gdb"
1139     ;;
1140   hppa*-*-hpux11*)
1141     noconfigdirs="$noconfigdirs gdb ld"
1142     ;;
1143   hppa*64*-*-linux*)
1144     ;;
1145   hppa*-*-linux*)
1146     ;;
1147   hppa*-*-*elf* | \
1148   hppa*-*-lites* | \
1149   hppa*-*-openbsd* | \
1150   hppa*64*-*-*)
1151     ;;
1152   hppa*-*-pro*)
1153     ;;
1154   hppa*-*-*)
1155     noconfigdirs="$noconfigdirs ld"
1156     ;;
1157   i960-*-*)
1158     noconfigdirs="$noconfigdirs gdb"
1159     ;;
1160   ia64*-*-elf*)
1161     # No gdb support yet.
1162     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1163     ;;
1164   ia64*-**-hpux*)
1165     # No ld support yet.
1166     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1167     ;;
1168   ia64*-*-*vms*)
1169     # No ld support yet.
1170     noconfigdirs="$noconfigdirs libgui itcl ld"
1171     ;;
1172   i[[3456789]]86-w64-mingw*)
1173     ;;
1174   i[[3456789]]86-*-mingw*)
1175     target_configdirs="$target_configdirs target-winsup"
1176     ;;
1177   *-*-cygwin*)
1178     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1179     noconfigdirs="$noconfigdirs target-libgloss"
1180     # always build newlib if winsup directory is present.
1181     if test -d "$srcdir/winsup/cygwin"; then
1182       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1183     elif test -d "$srcdir/newlib"; then
1184       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1185     fi
1186     ;;
1187   i[[3456789]]86-*-pe)
1188     noconfigdirs="$noconfigdirs target-libgloss"
1189     ;;
1190   i[[3456789]]86-*-sco3.2v5*)
1191     # The linker does not yet know about weak symbols in COFF,
1192     # and is not configured to handle mixed ELF and COFF.
1193     noconfigdirs="$noconfigdirs ld target-libgloss"
1194     ;;
1195   i[[3456789]]86-*-sco*)
1196     noconfigdirs="$noconfigdirs gprof target-libgloss"
1197     ;;
1198   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1199     noconfigdirs="$noconfigdirs target-libgloss"
1200     ;;
1201   i[[3456789]]86-*-sysv4*)
1202     noconfigdirs="$noconfigdirs target-libgloss"
1203     ;;
1204   i[[3456789]]86-*-beos*)
1205     noconfigdirs="$noconfigdirs gdb"
1206     ;;
1207   i[[3456789]]86-*-rdos*)
1208     noconfigdirs="$noconfigdirs gdb"
1209     ;;
1210   mmix-*-*)
1211     noconfigdirs="$noconfigdirs gdb"
1212     ;;
1213   mt-*-*)
1214     noconfigdirs="$noconfigdirs sim"
1215     ;;
1216   powerpc-*-aix*)
1217     # copied from rs6000-*-* entry
1218     noconfigdirs="$noconfigdirs gprof"
1219     ;;
1220   powerpc*-*-winnt* | powerpc*-*-pe*)
1221     target_configdirs="$target_configdirs target-winsup"
1222     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1223     # always build newlib.
1224     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1225     ;;
1226     # This is temporary until we can link against shared libraries
1227   powerpcle-*-solaris*)
1228     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1229     ;;
1230   powerpc-*-beos*)
1231     noconfigdirs="$noconfigdirs gdb"
1232     ;;
1233   rs6000-*-lynxos*)
1234     noconfigdirs="$noconfigdirs gprof"
1235     ;;
1236   rs6000-*-aix*)
1237     noconfigdirs="$noconfigdirs gprof"
1238     ;;
1239   rs6000-*-*)
1240     noconfigdirs="$noconfigdirs gprof"
1241     ;;
1242   m68k-apollo-*)
1243     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1244     ;;
1245   microblaze*)
1246     noconfigdirs="$noconfigdirs gprof"
1247     ;;
1248   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1249     if test x$with_newlib = xyes; then
1250       noconfigdirs="$noconfigdirs gprof"
1251     fi
1252     ;;
1253   mips*-*-irix5*)
1254     noconfigdirs="$noconfigdirs gprof target-libgloss"
1255     ;;
1256   mips*-*-irix6*)
1257     noconfigdirs="$noconfigdirs gprof target-libgloss"
1258     ;;
1259   mips*-*-bsd*)
1260     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1261     ;;
1262   mips*-*-linux*)
1263     ;;
1264   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1265   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1266     noconfigdirs="$noconfigdirs ld gas gprof"
1267     ;;
1268   mips*-*-*)
1269     noconfigdirs="$noconfigdirs gprof"
1270     ;;
1271   nds32*-*-*)
1272     noconfigdirs="$noconfigdirs gdb"
1273     ;;
1274   nvptx*-*-*)
1275     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1276     ;;
1277   or1k*-*-*)
1278     noconfigdirs="$noconfigdirs gdb"
1279     ;;
1280   sh-*-*)
1281     case "${target}" in
1282       sh*-*-elf)
1283          ;;
1284       *)
1285          noconfigdirs="$noconfigdirs target-libgloss" ;;
1286     esac
1287     ;;
1288   sparc-*-sunos4*)
1289     if test x${is_cross_compiler} = xno ; then
1290            use_gnu_ld=no
1291     fi
1292     ;;
1293   tic6x-*-*)
1294     noconfigdirs="$noconfigdirs sim"
1295     ;;
1296   tilepro*-*-* | tilegx*-*-*)
1297     noconfigdirs="$noconfigdirs sim"
1298     ;;
1299   v810-*-*)
1300     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1301     ;;
1302   vax-*-*)
1303     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1304     ;;
1305 esac
1306
1307 # If we aren't building newlib, then don't build libgloss, since libgloss
1308 # depends upon some newlib header files.
1309 case "${noconfigdirs}" in
1310   *target-libgloss*) ;;
1311   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1312 esac
1313
1314 # Work in distributions that contain no compiler tools, like Autoconf.
1315 host_makefile_frag=/dev/null
1316 if test -d ${srcdir}/config ; then
1317 case "${host}" in
1318   i[[3456789]]86-*-msdosdjgpp*)
1319     host_makefile_frag="config/mh-djgpp"
1320     ;;
1321   *-cygwin*)
1322     ACX_CHECK_CYGWIN_CAT_WORKS
1323     host_makefile_frag="config/mh-cygwin"
1324     ;;
1325   *-mingw*)
1326     host_makefile_frag="config/mh-mingw"
1327     ;;
1328   alpha*-linux*)
1329     host_makefile_frag="config/mh-alpha-linux"
1330     ;;
1331   hppa*-hp-hpux10*)
1332     host_makefile_frag="config/mh-pa-hpux10"
1333     ;;
1334   hppa*-hp-hpux*)
1335     host_makefile_frag="config/mh-pa"
1336     ;;
1337   hppa*-*)
1338     host_makefile_frag="config/mh-pa"
1339     ;;
1340   *-*-darwin*)
1341     host_makefile_frag="config/mh-darwin"
1342     ;;
1343   powerpc-*-aix*)
1344     host_makefile_frag="config/mh-ppc-aix"
1345     ;;
1346   rs6000-*-aix*)
1347     host_makefile_frag="config/mh-ppc-aix"
1348     ;;
1349 esac
1350 fi
1351
1352 if test "${build}" != "${host}" ; then
1353   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1354   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1355   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1356   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1357   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1358   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1359   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1360   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1361   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1362   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1363   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1364   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1365   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1366 else
1367   AR_FOR_BUILD="\$(AR)"
1368   AS_FOR_BUILD="\$(AS)"
1369   CC_FOR_BUILD="\$(CC)"
1370   CXX_FOR_BUILD="\$(CXX)"
1371   GCJ_FOR_BUILD="\$(GCJ)"
1372   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1373   GOC_FOR_BUILD="\$(GOC)"
1374   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1375   LD_FOR_BUILD="\$(LD)"
1376   NM_FOR_BUILD="\$(NM)"
1377   RANLIB_FOR_BUILD="\$(RANLIB)"
1378   WINDRES_FOR_BUILD="\$(WINDRES)"
1379   WINDMC_FOR_BUILD="\$(WINDMC)"
1380 fi
1381
1382 AC_PROG_CC
1383 AC_PROG_CXX
1384
1385 # We must set the default linker to the linker used by gcc for the correct
1386 # operation of libtool.  If LD is not defined and we are using gcc, try to
1387 # set the LD default to the ld used by gcc.
1388 if test -z "$LD"; then
1389   if test "$GCC" = yes; then
1390     case $build in
1391     *-*-mingw*)
1392       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1393     *)
1394       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1395     esac
1396     case $gcc_prog_ld in
1397     # Accept absolute paths.
1398     [[\\/]* | [A-Za-z]:[\\/]*)]
1399       LD="$gcc_prog_ld" ;;
1400     esac
1401   fi
1402 fi
1403
1404 # Check whether -static-libstdc++ -static-libgcc is supported.
1405 have_static_libs=no
1406 if test "$GCC" = yes; then
1407   saved_LDFLAGS="$LDFLAGS"
1408
1409   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1410   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1411   AC_LANG_PUSH(C++)
1412   AC_LINK_IFELSE([
1413 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1414 #error -static-libstdc++ not implemented
1415 #endif
1416 int main() {}],
1417     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1418     [AC_MSG_RESULT([no])])
1419   AC_LANG_POP(C++)
1420
1421   LDFLAGS="$saved_LDFLAGS"
1422 fi
1423
1424 ACX_PROG_GNAT
1425 ACX_PROG_CMP_IGNORE_INITIAL
1426
1427 AC_ARG_ENABLE([bootstrap],
1428 [AS_HELP_STRING([--enable-bootstrap],
1429                 [enable bootstrapping @<:@yes if native build@:>@])],,
1430 enable_bootstrap=default)
1431
1432 # Issue errors and warnings for invalid/strange bootstrap combinations.
1433 if test -r $srcdir/gcc/configure; then
1434   have_compiler=yes
1435 else
1436   have_compiler=no
1437 fi
1438
1439 case "$have_compiler:$host:$target:$enable_bootstrap" in
1440   *:*:*:no) ;;
1441
1442   # Default behavior.  Enable bootstrap if we have a compiler
1443   # and we are in a native configuration.
1444   yes:$build:$build:default)
1445     enable_bootstrap=yes ;;
1446
1447   *:*:*:default)
1448     enable_bootstrap=no ;;
1449
1450   # We have a compiler and we are in a native configuration, bootstrap is ok
1451   yes:$build:$build:yes)
1452     ;;
1453
1454   # Other configurations, but we have a compiler.  Assume the user knows
1455   # what he's doing.
1456   yes:*:*:yes)
1457     AC_MSG_WARN([trying to bootstrap a cross compiler])
1458     ;;
1459
1460   # No compiler: if they passed --enable-bootstrap explicitly, fail
1461   no:*:*:yes)
1462     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1463
1464   # Fail if wrong command line
1465   *)
1466     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1467     ;;
1468 esac
1469
1470 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1471 # C++98 compiler can still start the bootstrap.
1472 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1473   CXX="$CXX -std=gnu++98"
1474 fi
1475
1476 # Used for setting $lt_cv_objdir
1477 _LT_CHECK_OBJDIR
1478
1479 # Check for GMP, MPFR and MPC
1480 gmplibs="-lmpc -lmpfr -lgmp"
1481 gmpinc=
1482 have_gmp=no
1483
1484 # Specify a location for mpc
1485 # check for this first so it ends up on the link line before mpfr.
1486 AC_ARG_WITH(mpc,
1487 [AS_HELP_STRING([--with-mpc=PATH],
1488                 [specify prefix directory for installed MPC package.
1489                  Equivalent to --with-mpc-include=PATH/include
1490                  plus --with-mpc-lib=PATH/lib])])
1491 AC_ARG_WITH(mpc-include,
1492 [AS_HELP_STRING([--with-mpc-include=PATH],
1493                 [specify directory for installed MPC include files])])
1494 AC_ARG_WITH(mpc-lib,
1495 [AS_HELP_STRING([--with-mpc-lib=PATH],
1496                 [specify directory for the installed MPC library])])
1497
1498 if test "x$with_mpc" != x; then
1499   gmplibs="-L$with_mpc/lib $gmplibs"
1500   gmpinc="-I$with_mpc/include $gmpinc"
1501 fi
1502 if test "x$with_mpc_include" != x; then
1503   gmpinc="-I$with_mpc_include $gmpinc"
1504 fi
1505 if test "x$with_mpc_lib" != x; then
1506   gmplibs="-L$with_mpc_lib $gmplibs"
1507 fi
1508 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1509   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1510   gmpinc='-I$$s/mpc/src '"$gmpinc"
1511   # Do not test the mpc version.  Assume that it is sufficient, since
1512   # it is in the source tree, and the library has not been built yet
1513   # but it would be included on the link line in the version check below
1514   # hence making the test fail.
1515   have_gmp=yes
1516 fi
1517
1518 # Specify a location for mpfr
1519 # check for this first so it ends up on the link line before gmp.
1520 AC_ARG_WITH(mpfr-dir,
1521 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1522 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1523 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1524
1525 AC_ARG_WITH(mpfr,
1526 [AS_HELP_STRING([--with-mpfr=PATH],
1527                 [specify prefix directory for installed MPFR package.
1528                  Equivalent to --with-mpfr-include=PATH/include
1529                  plus --with-mpfr-lib=PATH/lib])])
1530 AC_ARG_WITH(mpfr-include,
1531 [AS_HELP_STRING([--with-mpfr-include=PATH],
1532                 [specify directory for installed MPFR include files])])
1533 AC_ARG_WITH(mpfr-lib,
1534 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1535                 [specify directory for the installed MPFR library])])
1536
1537 if test "x$with_mpfr" != x; then
1538   gmplibs="-L$with_mpfr/lib $gmplibs"
1539   gmpinc="-I$with_mpfr/include $gmpinc"
1540 fi
1541 if test "x$with_mpfr_include" != x; then
1542   gmpinc="-I$with_mpfr_include $gmpinc"
1543 fi
1544 if test "x$with_mpfr_lib" != x; then
1545   gmplibs="-L$with_mpfr_lib $gmplibs"
1546 fi
1547 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1548   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1549   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1550   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1551   # Do not test the mpfr version.  Assume that it is sufficient, since
1552   # it is in the source tree, and the library has not been built yet
1553   # but it would be included on the link line in the version check below
1554   # hence making the test fail.
1555   have_gmp=yes
1556 fi
1557
1558 # Specify a location for gmp
1559 AC_ARG_WITH(gmp-dir,
1560 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1561 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1562 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1563
1564 AC_ARG_WITH(gmp,
1565 [AS_HELP_STRING([--with-gmp=PATH],
1566                 [specify prefix directory for the installed GMP package.
1567                  Equivalent to --with-gmp-include=PATH/include
1568                  plus --with-gmp-lib=PATH/lib])])
1569 AC_ARG_WITH(gmp-include,
1570 [AS_HELP_STRING([--with-gmp-include=PATH],
1571                 [specify directory for installed GMP include files])])
1572 AC_ARG_WITH(gmp-lib,
1573 [AS_HELP_STRING([--with-gmp-lib=PATH],
1574                 [specify directory for the installed GMP library])])
1575
1576
1577 if test "x$with_gmp" != x; then
1578   gmplibs="-L$with_gmp/lib $gmplibs"
1579   gmpinc="-I$with_gmp/include $gmpinc"
1580 fi
1581 if test "x$with_gmp_include" != x; then
1582   gmpinc="-I$with_gmp_include $gmpinc"
1583 fi
1584 if test "x$with_gmp_lib" != x; then
1585   gmplibs="-L$with_gmp_lib $gmplibs"
1586 fi
1587 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1588   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1589   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1590   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1591   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1592   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1593   # Do not test the gmp version.  Assume that it is sufficient, since
1594   # it is in the source tree, and the library has not been built yet
1595   # but it would be included on the link line in the version check below
1596   # hence making the test fail.
1597   have_gmp=yes
1598 fi
1599
1600 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1601   have_gmp=yes
1602   saved_CFLAGS="$CFLAGS"
1603   CFLAGS="$CFLAGS $gmpinc"
1604   # Check for the recommended and required versions of GMP.
1605   AC_MSG_CHECKING([for the correct version of gmp.h])
1606   AC_TRY_COMPILE([#include "gmp.h"],[
1607   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1608   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1609   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1610   choke me
1611   #endif
1612   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1613   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1614   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1615   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1616   choke me
1617   #endif
1618   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1619    [AC_MSG_RESULT([no]); have_gmp=no])
1620
1621   # If we have GMP, check the MPFR version.
1622   if test x"$have_gmp" = xyes; then
1623     # Check for the recommended and required versions of MPFR.
1624     AC_MSG_CHECKING([for the correct version of mpfr.h])
1625     AC_TRY_COMPILE([#include <gmp.h>
1626     #include <mpfr.h>],[
1627     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1628     choke me
1629     #endif
1630     ], [AC_TRY_COMPILE([#include <gmp.h>
1631     #include <mpfr.h>],[
1632     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1633     choke me
1634     #endif
1635     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1636      [AC_MSG_RESULT([no]); have_gmp=no])
1637   fi
1638
1639   # Check for the MPC header version.
1640   if test x"$have_gmp" = xyes ; then
1641     # Check for the recommended and required versions of MPC.
1642     AC_MSG_CHECKING([for the correct version of mpc.h])
1643     AC_TRY_COMPILE([#include <mpc.h>],[
1644     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1645     choke me
1646     #endif
1647     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1648     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1649     choke me
1650     #endif
1651     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1652      [AC_MSG_RESULT([no]); have_gmp=no])
1653   fi
1654
1655   # Now check the MPFR library.
1656   if test x"$have_gmp" = xyes; then
1657     saved_LIBS="$LIBS"
1658     LIBS="$LIBS $gmplibs"
1659     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1660     AC_TRY_LINK([#include <mpc.h>],[
1661     mpfr_t n;
1662     mpfr_t x;
1663     mpc_t c;
1664     int t;
1665     mpfr_init (n);
1666     mpfr_init (x);
1667     mpfr_atan2 (n, n, x, GMP_RNDN);
1668     mpfr_erfc (n, x, GMP_RNDN);
1669     mpfr_subnormalize (x, t, GMP_RNDN);
1670     mpfr_clear(n);
1671     mpfr_clear(x);
1672     mpc_init2 (c, 53);
1673     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1674     mpc_cosh (c, c, MPC_RNDNN);
1675     mpc_pow (c, c, c, MPC_RNDNN);
1676     mpc_acosh (c, c, MPC_RNDNN);
1677     mpc_clear (c);
1678     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1679     LIBS="$saved_LIBS"
1680   fi
1681
1682   CFLAGS="$saved_CFLAGS"
1683
1684 # The library versions listed in the error message below should match
1685 # the HARD-minimums enforced above.
1686   if test x$have_gmp != xyes; then
1687     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1688 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1689 their locations.  Source code for these libraries can be found at
1690 their respective hosting sites as well as at
1691 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1692 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1693 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1694 make sure that you have installed both the libraries and the header
1695 files.  They may be located in separate packages.])
1696   fi
1697 fi
1698
1699 # Flags needed for both GMP, MPFR and/or MPC.
1700 AC_SUBST(gmplibs)
1701 AC_SUBST(gmpinc)
1702 AC_SUBST(extra_mpfr_configure_flags)
1703 AC_SUBST(extra_mpc_gmp_configure_flags)
1704 AC_SUBST(extra_mpc_mpfr_configure_flags)
1705 AC_SUBST(extra_isl_gmp_configure_flags)
1706
1707 # Libraries to use for stage1 or when not bootstrapping.
1708 AC_ARG_WITH(stage1-libs,
1709 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1710 [if test "$withval" = "no" -o "$withval" = "yes"; then
1711    stage1_libs=
1712  else
1713    stage1_libs=$withval
1714  fi],
1715 [stage1_libs=])
1716 AC_SUBST(stage1_libs)
1717
1718 # Linker flags to use for stage1 or when not bootstrapping.
1719 AC_ARG_WITH(stage1-ldflags,
1720 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1721 [if test "$withval" = "no" -o "$withval" = "yes"; then
1722    stage1_ldflags=
1723  else
1724    stage1_ldflags=$withval
1725  fi],
1726 [stage1_ldflags=
1727  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1728  # if supported.  But if the user explicitly specified the libraries to use,
1729  # trust that they are doing what they want.
1730  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1731    stage1_ldflags="-static-libstdc++ -static-libgcc"
1732  fi])
1733 AC_SUBST(stage1_ldflags)
1734
1735 # Libraries to use for stage2 and later builds.
1736 AC_ARG_WITH(boot-libs,
1737 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1738 [if test "$withval" = "no" -o "$withval" = "yes"; then
1739    poststage1_libs=
1740  else
1741    poststage1_libs=$withval
1742  fi],
1743 [poststage1_libs=])
1744 AC_SUBST(poststage1_libs)
1745
1746 # Linker flags to use for stage2 and later builds.
1747 AC_ARG_WITH(boot-ldflags,
1748 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1749                 [linker flags for stage2 and later])],
1750 [if test "$withval" = "no" -o "$withval" = "yes"; then
1751    poststage1_ldflags=
1752  else
1753    poststage1_ldflags=$withval
1754  fi],
1755 [poststage1_ldflags=
1756  # In stages 2 and 3, default to linking libstdc++ and libgcc
1757  # statically.  But if the user explicitly specified the libraries to
1758  # use, trust that they are doing what they want.
1759  if test "$poststage1_libs" = ""; then
1760    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1761  fi])
1762 AC_SUBST(poststage1_ldflags)
1763
1764 # GCC GRAPHITE dependency isl.
1765 # Basic setup is inlined here, actual checks are in config/isl.m4
1766
1767 AC_ARG_WITH(isl,
1768   [AS_HELP_STRING(
1769    [--with-isl=PATH],
1770    [Specify prefix directory for the installed isl package.
1771     Equivalent to --with-isl-include=PATH/include
1772     plus --with-isl-lib=PATH/lib])])
1773
1774 # Treat --without-isl as a request to disable
1775 # GRAPHITE support and skip all following checks.
1776 if test "x$with_isl" != "xno"; then
1777   # Check for isl
1778   dnl Provide configure switches and initialize islinc & isllibs
1779   dnl with user input.
1780   ISL_INIT_FLAGS
1781   dnl The versions of isl that work for Graphite
1782   ISL_CHECK_VERSION()
1783   dnl Only execute fail-action, if isl has been requested.
1784   ISL_IF_FAILED([
1785     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1786 fi
1787
1788 # If the isl check failed, disable builds of in-tree variant of isl
1789 if test "x$with_isl" = xno ||
1790    test "x$gcc_cv_isl" = xno; then
1791   noconfigdirs="$noconfigdirs isl"
1792   islinc=
1793 fi
1794
1795 AC_SUBST(isllibs)
1796 AC_SUBST(islinc)
1797
1798 # Check for LTO support.
1799 AC_ARG_ENABLE(lto,
1800 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1801 enable_lto=$enableval,
1802 enable_lto=yes; default_enable_lto=yes)
1803
1804 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1805   build_lto_plugin=yes
1806 ],[if test x"$default_enable_lto" = x"yes" ; then
1807     case $target in
1808       *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
1809       # On other non-ELF platforms, LTO has yet to be validated.
1810       *) enable_lto=no ;;
1811     esac
1812   else
1813   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1814   # It would also be nice to check the binutils support, but we don't
1815   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1816   # warn during gcc/ subconfigure; unless you're bootstrapping with
1817   # -flto it won't be needed until after installation anyway.
1818     case $target in
1819       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1820       *) if test x"$enable_lto" = x"yes"; then
1821         AC_MSG_ERROR([LTO support is not enabled for this target.])
1822         fi
1823       ;;
1824     esac
1825   fi
1826   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1827   # Build it unless LTO was explicitly disabled.
1828   case $target in
1829     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1830     *) ;;
1831   esac
1832 ])
1833
1834 AC_ARG_ENABLE(linker-plugin-configure-flags,
1835   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1836     [additional flags for configuring linker plugins @<:@none@:>@])],
1837   extra_linker_plugin_configure_flags=$enableval,
1838   extra_linker_plugin_configure_flags=)
1839 AC_SUBST(extra_linker_plugin_configure_flags)
1840 AC_ARG_ENABLE(linker-plugin-flags,
1841   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1842     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1843   extra_linker_plugin_flags=$enableval,
1844   extra_linker_plugin_flags=)
1845 AC_SUBST(extra_linker_plugin_flags)
1846
1847
1848 # By default, C and C++ are the only stage 1 languages.
1849 stage1_languages=,c,
1850
1851 # Target libraries that we bootstrap.
1852 bootstrap_target_libs=,target-libgcc,
1853
1854 # Figure out what language subdirectories are present.
1855 # Look if the user specified --enable-languages="..."; if not, use
1856 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1857 # go away some day.
1858 # NB:  embedded tabs in this IF block -- do not untabify
1859 if test -d ${srcdir}/gcc; then
1860   if test x"${enable_languages+set}" != xset; then
1861     if test x"${LANGUAGES+set}" = xset; then
1862       enable_languages="${LANGUAGES}"
1863         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1864     else
1865       enable_languages=all
1866     fi
1867   else
1868     if test x"${enable_languages}" = x ||
1869        test x"${enable_languages}" = xyes;
1870        then
1871       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1872       exit 1
1873     fi
1874   fi
1875   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1876
1877   # 'f95' is the old name for the 'fortran' language. We issue a warning
1878   # and make the substitution.
1879   case ,${enable_languages}, in
1880     *,f95,*)
1881       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1882       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1883       ;;
1884   esac
1885
1886   # If bootstrapping, C++ must be enabled.
1887   case ",$enable_languages,:$enable_bootstrap" in
1888     *,c++,*:*) ;;
1889     *:yes)
1890       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1891         enable_languages="${enable_languages},c++"
1892       else
1893         AC_MSG_ERROR([bootstrapping requires c++ sources])
1894       fi
1895       ;;
1896   esac
1897
1898   # First scan to see if an enabled language requires some other language.
1899   # We assume that a given config-lang.in will list all the language
1900   # front ends it requires, even if some are required indirectly.
1901   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1902     case ${lang_frag} in
1903       ..) ;;
1904       # The odd quoting in the next line works around
1905       # an apparent bug in bash 1.12 on linux.
1906       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1907       *)
1908         # From the config-lang.in, get $language, $lang_requires, and
1909         # $lang_requires_boot_languages.
1910         language=
1911         lang_requires=
1912         lang_requires_boot_languages=
1913         . ${lang_frag}
1914         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1915           case ,${enable_languages}, in
1916             *,$other,*) ;;
1917             *,all,*) ;;
1918             *,$language,*)
1919               echo " \`$other' language required by \`$language'; enabling" 1>&2
1920               enable_languages="${enable_languages},${other}"
1921               ;;
1922           esac
1923         done
1924         for other in ${lang_requires_boot_languages} ; do
1925           if test "$other" != "c"; then
1926             case ,${enable_stage1_languages}, in
1927               *,$other,*) ;;
1928               *,all,*) ;;
1929               *)
1930                 case ,${enable_languages}, in
1931                   *,$language,*)
1932                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1933                     enable_stage1_languages="$enable_stage1_languages,${other}"
1934                     ;;
1935                 esac
1936                 ;;
1937             esac
1938           fi
1939         done
1940         ;;
1941     esac
1942   done
1943
1944   new_enable_languages=,c,
1945
1946   # If LTO is enabled, add the LTO front end.
1947   if test "$enable_lto" = "yes" ; then
1948     case ,${enable_languages}, in
1949       *,lto,*) ;;
1950       *) enable_languages="${enable_languages},lto" ;;
1951     esac
1952     if test "${build_lto_plugin}" = "yes" ; then
1953       configdirs="$configdirs lto-plugin"
1954     fi
1955   fi
1956
1957   # If we're building an offloading compiler, add the LTO front end.
1958   if test x"$enable_as_accelerator_for" != x ; then
1959     case ,${enable_languages}, in
1960       *,lto,*) ;;
1961       *) enable_languages="${enable_languages},lto" ;;
1962     esac
1963   fi
1964
1965   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1966   potential_languages=,c,
1967
1968   enabled_target_libs=
1969   disabled_target_libs=
1970
1971   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1972     case ${lang_frag} in
1973       ..) ;;
1974       # The odd quoting in the next line works around
1975       # an apparent bug in bash 1.12 on linux.
1976       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1977       *)
1978         # From the config-lang.in, get $language, $target_libs,
1979         # $lang_dirs, $boot_language, and $build_by_default
1980         language=
1981         target_libs=
1982         lang_dirs=
1983         subdir_requires=
1984         boot_language=no
1985         build_by_default=yes
1986         . ${lang_frag}
1987         if test x${language} = x; then
1988           echo "${lang_frag} doesn't set \$language." 1>&2
1989           exit 1
1990         fi
1991
1992         if test "$language" = "c++"; then
1993           boot_language=yes
1994         fi
1995
1996         add_this_lang=no
1997         case ,${enable_languages}, in
1998           *,${language},*)
1999             # Language was explicitly selected; include it
2000             # unless it is C, which is enabled by default.
2001             if test "$language" != "c"; then
2002               add_this_lang=yes
2003             fi
2004             ;;
2005           *,all,*)
2006             # 'all' was selected, select it if it is a default language
2007             if test "$language" != "c"; then
2008               add_this_lang=${build_by_default}
2009             fi
2010             ;;
2011         esac
2012
2013         # Disable languages that need other directories if these aren't available.
2014         for i in $subdir_requires; do
2015           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2016           case ,${enable_languages}, in
2017             *,${language},*)
2018               # Specifically requested language; tell them.
2019               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2020               ;;
2021             *)
2022               # Silently disable.
2023               add_this_lang=unsupported
2024               ;;
2025           esac
2026         done
2027
2028         # Disable Ada if no preexisting GNAT is available.
2029         case ,${enable_languages},:${language}:${have_gnat} in
2030           *,${language},*:ada:no)
2031             # Specifically requested language; tell them.
2032             AC_MSG_ERROR([GNAT is required to build $language])
2033             ;;
2034           *:ada:no)
2035             # Silently disable.
2036             add_this_lang=unsupported
2037             ;;
2038         esac
2039
2040         # Disable a language that is unsupported by the target.
2041         case " $unsupported_languages " in
2042           *" $language "*)
2043             add_this_lang=unsupported
2044             ;;
2045         esac
2046
2047         case $add_this_lang in
2048           unsupported)
2049             # Remove language-dependent dirs.
2050             disabled_target_libs="$disabled_target_libs $target_libs"
2051             noconfigdirs="$noconfigdirs $lang_dirs"
2052             ;;
2053           no)
2054             # Remove language-dependent dirs; still show language as supported.
2055             disabled_target_libs="$disabled_target_libs $target_libs"
2056             noconfigdirs="$noconfigdirs $lang_dirs"
2057             potential_languages="${potential_languages}${language},"
2058             ;;
2059           yes)
2060             new_enable_languages="${new_enable_languages}${language},"
2061             potential_languages="${potential_languages}${language},"
2062             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2063             enabled_target_libs="$enabled_target_libs $target_libs"
2064             case "${boot_language}:,$enable_stage1_languages," in
2065               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2066                 # Add to (comma-separated) list of stage 1 languages.
2067                 case ",$stage1_languages," in
2068                   *,$language,* | ,yes, | ,all,) ;;
2069                   *) stage1_languages="${stage1_languages}${language}," ;;
2070                 esac
2071                 # We need to bootstrap any supporting libraries.
2072                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2073                 ;;
2074             esac
2075             ;;
2076         esac
2077         ;;
2078     esac
2079   done
2080
2081   # Add target libraries which are only needed for disabled languages
2082   # to noconfigdirs.
2083   if test -n "$disabled_target_libs"; then
2084     for dir in $disabled_target_libs; do
2085       case " $enabled_target_libs " in
2086       *" ${dir} "*) ;;
2087       *) noconfigdirs="$noconfigdirs $dir" ;;
2088       esac
2089     done
2090   fi
2091
2092   AC_ARG_ENABLE(stage1-languages,
2093   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2094                   [choose additional languages to build during
2095                   stage1.  Mostly useful for compiler development])],
2096   [case ,${enable_stage1_languages}, in
2097     ,no,|,,)
2098       # Set it to something that will have no effect in the loop below
2099       enable_stage1_languages=c ;;
2100     ,yes,)
2101       enable_stage1_languages=`echo $new_enable_languages | \
2102         sed -e "s/^,//" -e "s/,$//" ` ;;
2103     *,all,*)
2104       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2105         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2106   esac
2107
2108   # Add "good" languages from enable_stage1_languages to stage1_languages,
2109   # while "bad" languages go in missing_languages.  Leave no duplicates.
2110   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2111     case $potential_languages in
2112       *,$i,*)
2113         case $stage1_languages in
2114           *,$i,*) ;;
2115           *) stage1_languages="$stage1_languages$i," ;;
2116         esac ;;
2117       *)
2118         case $missing_languages in
2119           *,$i,*) ;;
2120           *) missing_languages="$missing_languages$i," ;;
2121         esac ;;
2122      esac
2123   done])
2124
2125   # Remove leading/trailing commas that were added for simplicity
2126   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2127   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2128   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2129   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2130
2131   if test "x$missing_languages" != x; then
2132     AC_MSG_ERROR([
2133 The following requested languages could not be built: ${missing_languages}
2134 Supported languages are: ${potential_languages}])
2135   fi
2136   if test "x$new_enable_languages" != "x$enable_languages"; then
2137     echo The following languages will be built: ${new_enable_languages}
2138     enable_languages="$new_enable_languages"
2139   fi
2140
2141   AC_SUBST(stage1_languages)
2142   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2143 fi
2144
2145 # Handle --disable-<component> generically.
2146 for dir in $configdirs $build_configdirs $target_configdirs ; do
2147   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2148   varname=`echo $dirname | sed -e s/+/_/g`
2149   if eval test x\${enable_${varname}} "=" xno ; then
2150     noconfigdirs="$noconfigdirs $dir"
2151   fi
2152 done
2153
2154 # Check for Boehm's garbage collector
2155 AC_ARG_ENABLE(objc-gc,
2156 [AS_HELP_STRING([--enable-objc-gc],
2157                 [enable use of Boehm's garbage collector with the
2158                  GNU Objective-C runtime])],
2159 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2160   *,objc,*:*:yes:*target-boehm-gc*)
2161     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2162     ;;
2163 esac])
2164
2165 # Make sure we only build Boehm's garbage collector if required.
2166 case ,${enable_languages},:${enable_objc_gc} in
2167   *,objc,*:yes)
2168     # Keep target-boehm-gc if requested for Objective-C.
2169     ;;
2170   *)
2171     # Otherwise remove target-boehm-gc depending on target-libjava.
2172     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2173       noconfigdirs="$noconfigdirs target-boehm-gc"
2174     fi
2175     ;;
2176 esac
2177
2178 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2179 case ,${enable_languages}, in
2180   *,c++,*)
2181     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2182     case "${noconfigdirs}" in
2183       *target-libstdc++-v3*)
2184         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2185         ;;
2186       *) ;;
2187     esac
2188     ;;
2189   *)
2190     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2191     ;;
2192 esac
2193
2194 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2195 # $build_configdirs and $target_configdirs.
2196 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2197
2198 notsupp=""
2199 for dir in . $skipdirs $noconfigdirs ; do
2200   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2201   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2202     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2203     if test -r $srcdir/$dirname/configure ; then
2204       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2205         true
2206       else
2207         notsupp="$notsupp $dir"
2208       fi
2209     fi
2210   fi
2211   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2212     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2213     if test -r $srcdir/$dirname/configure ; then
2214       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2215         true
2216       else
2217         notsupp="$notsupp $dir"
2218       fi
2219     fi
2220   fi
2221   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2222     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2223     if test -r $srcdir/$dirname/configure ; then
2224       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2225         true
2226       else
2227         notsupp="$notsupp $dir"
2228       fi
2229     fi
2230   fi
2231 done
2232
2233 # Quietly strip out all directories which aren't configurable in this tree.
2234 # This relies on all configurable subdirectories being autoconfiscated, which
2235 # is now the case.
2236 build_configdirs_all="$build_configdirs"
2237 build_configdirs=
2238 for i in ${build_configdirs_all} ; do
2239   j=`echo $i | sed -e s/build-//g`
2240   if test -f ${srcdir}/$j/configure ; then
2241     build_configdirs="${build_configdirs} $i"
2242   fi
2243 done
2244
2245 configdirs_all="$configdirs"
2246 configdirs=
2247 for i in ${configdirs_all} ; do
2248   if test -f ${srcdir}/$i/configure ; then
2249     configdirs="${configdirs} $i"
2250   fi
2251 done
2252
2253 target_configdirs_all="$target_configdirs"
2254 target_configdirs=
2255 for i in ${target_configdirs_all} ; do
2256   j=`echo $i | sed -e s/target-//g`
2257   if test -f ${srcdir}/$j/configure ; then
2258     target_configdirs="${target_configdirs} $i"
2259   fi
2260 done
2261
2262 # Exclude target-zlib if target-libjava isn't built.
2263 case ${target_configdirs} in
2264 *target-libjava*)
2265   ;;
2266 *)
2267   target_configdirs="`echo ${target_configdirs} | sed -e 's/target-zlib//'`"
2268   ;;
2269 esac
2270
2271 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2272 # so we have to add it after the preceding checks.
2273 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2274 then
2275   case " $configdirs " in
2276     *" libiberty "*)
2277       # If we can build libiberty, we can also build libiberty-linker-plugin.
2278       configdirs="$configdirs libiberty-linker-plugin"
2279       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2280         --with-libiberty=../libiberty-linker-plugin";;
2281     *)
2282       AC_MSG_ERROR([libiberty missing]);;
2283   esac
2284 fi
2285
2286 # Sometimes we have special requirements for the host libiberty.
2287 extra_host_libiberty_configure_flags=
2288 extra_host_zlib_configure_flags=
2289 case " $configdirs " in
2290   *" lto-plugin "* | *" libcc1 "*)
2291     # When these are to be built as shared libraries, the same applies to
2292     # libiberty.
2293     extra_host_libiberty_configure_flags=--enable-shared
2294     ;;
2295   *" bfd "*)
2296     # When bfd is to be built as a shared library, the same applies to
2297     # zlib.
2298     if test "$enable_shared" = "yes"; then
2299       extra_host_zlib_configure_flags=--enable-host-shared
2300     fi
2301     ;;
2302 esac
2303 AC_SUBST(extra_host_libiberty_configure_flags)
2304 AC_SUBST(extra_host_zlib_configure_flags)
2305
2306 # Produce a warning message for the subdirs we can't configure.
2307 # This isn't especially interesting in the Cygnus tree, but in the individual
2308 # FSF releases, it's important to let people know when their machine isn't
2309 # supported by the one or two programs in a package.
2310
2311 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2312   # If $appdirs is non-empty, at least one of those directories must still
2313   # be configured, or we error out.  (E.g., if the gas release supports a
2314   # specified target in some subdirs but not the gas subdir, we shouldn't
2315   # pretend that all is well.)
2316   if test -n "$appdirs" ; then
2317     for dir in $appdirs ; do
2318       if test -r $dir/Makefile.in ; then
2319         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2320           appdirs=""
2321           break
2322         fi
2323         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2324           appdirs=""
2325           break
2326         fi
2327       fi
2328     done
2329     if test -n "$appdirs" ; then
2330       echo "*** This configuration is not supported by this package." 1>&2
2331       exit 1
2332     fi
2333   fi
2334   # Okay, some application will build, or we don't care to check.  Still
2335   # notify of subdirs not getting built.
2336   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2337   echo "    ${notsupp}" 1>&2
2338   echo "    (Any other directories should still work fine.)" 1>&2
2339 fi
2340
2341 case "$host" in
2342   *msdosdjgpp*)
2343     enable_gdbtk=no ;;
2344 esac
2345
2346 # To find our prefix, in gcc_cv_tool_prefix.
2347 ACX_TOOL_DIRS
2348
2349 copy_dirs=
2350
2351 AC_ARG_WITH([build-sysroot],
2352   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2353                   [use sysroot as the system root during the build])],
2354   [if test x"$withval" != x ; then
2355      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2356    fi],
2357   [SYSROOT_CFLAGS_FOR_TARGET=])
2358 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2359
2360 AC_ARG_WITH([debug-prefix-map],
2361   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2362                   [map A to B, C to D ... in debug information])],
2363   [if test x"$withval" != x; then
2364      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2365      for debug_map in $withval; do
2366        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2367      done
2368    fi],
2369   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2370 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2371
2372 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2373 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2374 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2375 # We want to ensure that TARGET libraries (which we know are built with
2376 # gcc) are built with "-O2 -g", so include those options when setting
2377 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2378 if test "x$CFLAGS_FOR_TARGET" = x; then
2379   if test "x${is_cross_compiler}" = xyes; then
2380     CFLAGS_FOR_TARGET="-g -O2"
2381   else
2382     CFLAGS_FOR_TARGET=$CFLAGS
2383     case " $CFLAGS " in
2384       *" -O2 "*) ;;
2385       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2386     esac
2387     case " $CFLAGS " in
2388       *" -g "* | *" -g3 "*) ;;
2389       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2390     esac
2391   fi
2392 fi
2393 AC_SUBST(CFLAGS_FOR_TARGET)
2394
2395 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2396   if test "x${is_cross_compiler}" = xyes; then
2397     CXXFLAGS_FOR_TARGET="-g -O2"
2398   else
2399     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2400     case " $CXXFLAGS " in
2401       *" -O2 "*) ;;
2402       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2403     esac
2404     case " $CXXFLAGS " in
2405       *" -g "* | *" -g3 "*) ;;
2406       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2407     esac
2408   fi
2409 fi
2410 AC_SUBST(CXXFLAGS_FOR_TARGET)
2411
2412 AC_SUBST(LDFLAGS_FOR_TARGET)
2413
2414 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2415 # the named directory are copied to $(tooldir)/sys-include.
2416 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2417   if test x${is_cross_compiler} = xno ; then
2418     echo 1>&2 '***' --with-headers is only supported when cross compiling
2419     exit 1
2420   fi
2421   if test x"${with_headers}" != xyes ; then
2422     x=${gcc_cv_tool_prefix}
2423     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2424   fi
2425 fi
2426
2427 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2428 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2429 # are permitted.
2430 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2431   if test x${is_cross_compiler} = xno ; then
2432     echo 1>&2 '***' --with-libs is only supported when cross compiling
2433     exit 1
2434   fi
2435   if test x"${with_libs}" != xyes ; then
2436     # Copy the libraries in reverse order, so that files in the first named
2437     # library override files in subsequent libraries.
2438     x=${gcc_cv_tool_prefix}
2439     for l in ${with_libs}; do
2440       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2441     done
2442   fi
2443 fi
2444
2445 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2446 #
2447 # This is done by determining whether or not the appropriate directory
2448 # is available, and by checking whether or not specific configurations
2449 # have requested that this magic not happen.
2450 #
2451 # The command line options always override the explicit settings in
2452 # configure.ac, and the settings in configure.ac override this magic.
2453 #
2454 # If the default for a toolchain is to use GNU as and ld, and you don't
2455 # want to do that, then you should use the --without-gnu-as and
2456 # --without-gnu-ld options for the configure script.  Similarly, if
2457 # the default is to use the included zlib and you don't want to do that,
2458 # you should use the --with-system-zlib option for the configure script.
2459
2460 if test x${use_gnu_as} = x &&
2461    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2462   with_gnu_as=yes
2463   extra_host_args="$extra_host_args --with-gnu-as"
2464 fi
2465
2466 if test x${use_gnu_ld} = x &&
2467    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2468   with_gnu_ld=yes
2469   extra_host_args="$extra_host_args --with-gnu-ld"
2470 fi
2471
2472 if test x${use_included_zlib} = x &&
2473    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2474   :
2475 else
2476   with_system_zlib=yes
2477   extra_host_args="$extra_host_args --with-system-zlib"
2478 fi
2479
2480 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2481 # can detect this case.
2482
2483 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2484   with_newlib=yes
2485   extra_host_args="$extra_host_args --with-newlib"
2486 fi
2487
2488 # Handle ${copy_dirs}
2489 set fnord ${copy_dirs}
2490 shift
2491 while test $# != 0 ; do
2492   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2493     :
2494   else
2495     echo Copying $1 to $2
2496
2497     # Use the install script to create the directory and all required
2498     # parent directories.
2499     if test -d $2 ; then
2500       :
2501     else
2502       echo >config.temp
2503       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2504     fi
2505
2506     # Copy the directory, assuming we have tar.
2507     # FIXME: Should we use B in the second tar?  Not all systems support it.
2508     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2509
2510     # It is the responsibility of the user to correctly adjust all
2511     # symlinks.  If somebody can figure out how to handle them correctly
2512     # here, feel free to add the code.
2513
2514     echo $1 > $2/COPIED
2515   fi
2516   shift; shift
2517 done
2518
2519 # Determine a target-dependent exec_prefix that the installed
2520 # gcc will search in.  Keep this list sorted by triplet, with
2521 # the *-*-osname triplets last.
2522 md_exec_prefix=
2523 case "${target}" in
2524   i[[34567]]86-pc-msdosdjgpp*)
2525     md_exec_prefix=/dev/env/DJDIR/bin
2526     ;;
2527   *-*-hpux* | \
2528   *-*-nto-qnx* | \
2529   *-*-solaris2*)
2530     md_exec_prefix=/usr/ccs/bin
2531     ;;
2532 esac
2533
2534 extra_arflags_for_target=
2535 extra_nmflags_for_target=
2536 extra_ranlibflags_for_target=
2537 target_makefile_frag=/dev/null
2538 case "${target}" in
2539   spu-*-*)
2540     target_makefile_frag="config/mt-spu"
2541     ;;
2542   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2543     target_makefile_frag="config/mt-sde"
2544     ;;
2545   mipsisa*-*-elfoabi*)
2546     target_makefile_frag="config/mt-mips-elfoabi"
2547     ;;
2548   mips*-*-*linux* | mips*-*-gnu*)
2549     target_makefile_frag="config/mt-mips-gnu"
2550     ;;
2551   nios2-*-elf*)
2552     target_makefile_frag="config/mt-nios2-elf"
2553     ;;
2554   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2555     target_makefile_frag="config/mt-gnu"
2556     ;;
2557   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2558     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2559     # commands to handle both 32-bit and 64-bit objects.  These flags are
2560     # harmless if we're using GNU nm or ar.
2561     extra_arflags_for_target=" -X32_64"
2562     extra_nmflags_for_target=" -B -X32_64"
2563     ;;
2564 esac
2565
2566 alphaieee_frag=/dev/null
2567 case $target in
2568   alpha*-*-*)
2569     # This just makes sure to use the -mieee option to build target libs.
2570     # This should probably be set individually by each library.
2571     alphaieee_frag="config/mt-alphaieee"
2572     ;;
2573 esac
2574
2575 # If --enable-target-optspace always use -Os instead of -O2 to build
2576 # the target libraries, similarly if it is not specified, use -Os
2577 # on selected platforms.
2578 ospace_frag=/dev/null
2579 case "${enable_target_optspace}:${target}" in
2580   yes:*)
2581     ospace_frag="config/mt-ospace"
2582     ;;
2583   :d30v-*)
2584     ospace_frag="config/mt-d30v"
2585     ;;
2586   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2587     ospace_frag="config/mt-ospace"
2588     ;;
2589   no:* | :*)
2590     ;;
2591   *)
2592     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2593     ;;
2594 esac
2595
2596 # Some systems (e.g., one of the i386-aix systems the gas testers are
2597 # using) don't handle "\$" correctly, so don't use it here.
2598 tooldir='${exec_prefix}'/${target_noncanonical}
2599 build_tooldir=${tooldir}
2600
2601 # Create a .gdbinit file which runs the one in srcdir
2602 # and tells GDB to look there for source files.
2603
2604 if test -r ${srcdir}/.gdbinit ; then
2605   case ${srcdir} in
2606     .) ;;
2607     *) cat > ./.gdbinit <<EOF
2608 # ${NO_EDIT}
2609 dir ${srcdir}
2610 dir .
2611 source ${srcdir}/.gdbinit
2612 EOF
2613     ;;
2614   esac
2615 fi
2616
2617 # Make sure that the compiler is able to generate an executable.  If it
2618 # can't, we are probably in trouble.  We don't care whether we can run the
2619 # executable--we might be using a cross compiler--we only care whether it
2620 # can be created.  At this point the main configure script has set CC.
2621 we_are_ok=no
2622 echo "int main () { return 0; }" > conftest.c
2623 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2624 if test $? = 0 ; then
2625   if test -s conftest || test -s conftest.exe ; then
2626     we_are_ok=yes
2627   fi
2628 fi
2629 case $we_are_ok in
2630   no)
2631     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2632     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2633     rm -f conftest*
2634     exit 1
2635     ;;
2636 esac
2637 rm -f conftest*
2638
2639 # Decide which environment variable is used to find dynamic libraries.
2640 case "${host}" in
2641   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2642   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2643   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2644   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2645 esac
2646
2647 # On systems where the dynamic library environment variable is PATH,
2648 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2649 # built executables to PATH.
2650 if test "$RPATH_ENVVAR" = PATH; then
2651   GCC_SHLIB_SUBDIR=/shlib
2652 else
2653   GCC_SHLIB_SUBDIR=
2654 fi
2655
2656 # Adjust the toplevel makefile according to whether bootstrap was selected.
2657 case $enable_bootstrap in
2658   yes)
2659     bootstrap_suffix=bootstrap
2660     BUILD_CONFIG=bootstrap-debug
2661     ;;
2662   no)
2663     bootstrap_suffix=no-bootstrap
2664     BUILD_CONFIG=
2665     ;;
2666 esac
2667
2668 AC_MSG_CHECKING(for default BUILD_CONFIG)
2669
2670 AC_ARG_WITH([build-config],
2671   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2672                   [use config/NAME.mk build configuration])],
2673   [case $with_build_config in
2674    yes) with_build_config= ;;
2675    no) with_build_config= BUILD_CONFIG= ;;
2676    esac])
2677
2678 if test "x${with_build_config}" != x; then
2679   BUILD_CONFIG=$with_build_config
2680 else
2681   case $BUILD_CONFIG in
2682   bootstrap-debug)
2683     if echo "int f (void) { return 0; }" > conftest.c &&
2684        ${CC} -c conftest.c &&
2685        mv conftest.o conftest.o.g0 &&
2686        ${CC} -c -g conftest.c &&
2687        mv conftest.o conftest.o.g &&
2688        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2689       :
2690     else
2691       BUILD_CONFIG=
2692     fi
2693     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2694     ;;
2695   esac
2696 fi
2697 AC_MSG_RESULT($BUILD_CONFIG)
2698 AC_SUBST(BUILD_CONFIG)
2699
2700 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2701 AC_MSG_CHECKING([for --enable-vtable-verify])
2702 AC_ARG_ENABLE(vtable-verify,
2703 [AS_HELP_STRING([--enable-vtable-verify],
2704                 [Enable vtable verification feature])],
2705 [case "$enableval" in
2706  yes) enable_vtable_verify=yes ;;
2707  no)  enable_vtable_verify=no ;;
2708  *)   enable_vtable_verify=no;;
2709  esac],
2710 [enable_vtable_verify=no])
2711 AC_MSG_RESULT($enable_vtable_verify)
2712
2713 # Record target_configdirs and the configure arguments for target and
2714 # build configuration in Makefile.
2715 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2716 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2717 bootstrap_fixincludes=no
2718
2719 # If we are building libgomp, bootstrap it.
2720 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2721   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2722 fi
2723
2724 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2725 # or bootstrap-ubsan, bootstrap it.
2726 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2727   case "$BUILD_CONFIG" in
2728     *bootstrap-asan* | *bootstrap-ubsan* )
2729       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2730       bootstrap_fixincludes=yes
2731       ;;
2732   esac
2733 fi
2734
2735 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2736 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2737    test "$enable_vtable_verify" != no; then
2738   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2739 fi
2740
2741 # If we are building libmpx, bootstrap it.
2742 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2743   bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2744 fi
2745
2746 # Determine whether gdb needs tk/tcl or not.
2747 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2748 # and in that case we want gdb to be built without tk.  Ugh!
2749 # In fact I believe gdb is the *only* package directly dependent on tk,
2750 # so we should be able to put the 'maybe's in unconditionally and
2751 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2752 # 100% sure that that's safe though.
2753
2754 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2755 case "$enable_gdbtk" in
2756   no)
2757     GDB_TK="" ;;
2758   yes)
2759     GDB_TK="${gdb_tk}" ;;
2760   *)
2761     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2762     # distro.  Eventually someone will fix this and move Insight, nee
2763     # gdbtk to a separate directory.
2764     if test -d ${srcdir}/gdb/gdbtk ; then
2765       GDB_TK="${gdb_tk}"
2766     else
2767       GDB_TK=""
2768     fi
2769     ;;
2770 esac
2771 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2772 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2773
2774 # Strip out unwanted targets.
2775
2776 # While at that, we remove Makefiles if we were started for recursive
2777 # configuration, so that the top-level Makefile reconfigures them,
2778 # like we used to do when configure itself was recursive.
2779
2780 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2781 # but now we're fixing up the Makefile ourselves with the additional
2782 # commands passed to AC_CONFIG_FILES.  Use separate variables
2783 # extrasub-{build,host,target} not because there is any reason to split
2784 # the substitutions up that way, but only to remain below the limit of
2785 # 99 commands in a script, for HP-UX sed.
2786 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2787
2788 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2789   yes:yes:*\ gold\ *:*,c++,*) ;;
2790   yes:yes:*\ gold\ *:*)
2791     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2792     ;;
2793 esac
2794
2795 extrasub_build=
2796 for module in ${build_configdirs} ; do
2797   if test -z "${no_recursion}" \
2798      && test -f ${build_subdir}/${module}/Makefile; then
2799     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2800     rm -f ${build_subdir}/${module}/Makefile
2801   fi
2802   extrasub_build="$extrasub_build
2803 /^@if build-$module\$/d
2804 /^@endif build-$module\$/d
2805 /^@if build-$module-$bootstrap_suffix\$/d
2806 /^@endif build-$module-$bootstrap_suffix\$/d"
2807 done
2808 extrasub_host=
2809 for module in ${configdirs} ; do
2810   if test -z "${no_recursion}"; then
2811     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2812       if test -f ${file}; then
2813         echo 1>&2 "*** removing ${file} to force reconfigure"
2814         rm -f ${file}
2815       fi
2816     done
2817   fi
2818   case ${module},${bootstrap_fixincludes} in
2819     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2820     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2821   esac
2822   extrasub_host="$extrasub_host
2823 /^@if $module\$/d
2824 /^@endif $module\$/d
2825 /^@if $module-$host_bootstrap_suffix\$/d
2826 /^@endif $module-$host_bootstrap_suffix\$/d"
2827 done
2828 extrasub_target=
2829 for module in ${target_configdirs} ; do
2830   if test -z "${no_recursion}" \
2831      && test -f ${target_subdir}/${module}/Makefile; then
2832     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2833     rm -f ${target_subdir}/${module}/Makefile
2834   fi
2835
2836   # We only bootstrap target libraries listed in bootstrap_target_libs.
2837   case $bootstrap_target_libs in
2838     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2839     *) target_bootstrap_suffix=no-bootstrap ;;
2840   esac
2841
2842   extrasub_target="$extrasub_target
2843 /^@if target-$module\$/d
2844 /^@endif target-$module\$/d
2845 /^@if target-$module-$target_bootstrap_suffix\$/d
2846 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2847 done
2848
2849 # Do the final fixup along with target modules.
2850 extrasub_target="$extrasub_target
2851 /^@if /,/^@endif /d"
2852
2853 # Create the serialization dependencies.  This uses a temporary file.
2854
2855 AC_ARG_ENABLE([serial-configure],
2856 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2857                 [force sequential configuration of
2858                  sub-packages for the host, target or build
2859                  machine, or all sub-packages])])
2860
2861 case ${enable_serial_configure} in
2862   yes)
2863     enable_serial_build_configure=yes
2864     enable_serial_host_configure=yes
2865     enable_serial_target_configure=yes
2866     ;;
2867 esac
2868
2869 # These force 'configure's to be done one at a time, to avoid problems
2870 # with contention over a shared config.cache.
2871 rm -f serdep.tmp
2872 echo '# serdep.tmp' > serdep.tmp
2873 olditem=
2874 test "x${enable_serial_build_configure}" = xyes &&
2875 for item in ${build_configdirs} ; do
2876   case ${olditem} in
2877     "") ;;
2878     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2879   esac
2880   olditem=${item}
2881 done
2882 olditem=
2883 test "x${enable_serial_host_configure}" = xyes &&
2884 for item in ${configdirs} ; do
2885   case ${olditem} in
2886     "") ;;
2887     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2888   esac
2889   olditem=${item}
2890 done
2891 olditem=
2892 test "x${enable_serial_target_configure}" = xyes &&
2893 for item in ${target_configdirs} ; do
2894   case ${olditem} in
2895     "") ;;
2896     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2897   esac
2898   olditem=${item}
2899 done
2900 serialization_dependencies=serdep.tmp
2901 AC_SUBST_FILE(serialization_dependencies)
2902
2903 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2904 # target, nonopt, and variable assignments.  These are the ones we
2905 # might not want to pass down to subconfigures.  The exception being
2906 # --cache-file=/dev/null, which is used to turn off the use of cache
2907 # files altogether, and which should be passed on to subconfigures.
2908 # Also strip program-prefix, program-suffix, and program-transform-name,
2909 # so that we can pass down a consistent program-transform-name.
2910 baseargs=
2911 tbaseargs=
2912 keep_next=no
2913 skip_next=no
2914 eval "set -- $ac_configure_args"
2915 for ac_arg
2916 do
2917   if test X"$skip_next" = X"yes"; then
2918     skip_next=no
2919     continue
2920   fi
2921   if test X"$keep_next" = X"yes"; then
2922     case $ac_arg in
2923       *\'*)
2924         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2925     esac
2926     baseargs="$baseargs '$ac_arg'"
2927     tbaseargs="$tbaseargs '$ac_arg'"
2928     keep_next=no
2929     continue
2930   fi
2931
2932   # Handle separated arguments.  Based on the logic generated by
2933   # autoconf 2.59.
2934   case $ac_arg in
2935     *=* | --config-cache | -C | -disable-* | --disable-* \
2936       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2937       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2938       | -with-* | --with-* | -without-* | --without-* | --x)
2939       separate_arg=no
2940       ;;
2941     -*)
2942       separate_arg=yes
2943       ;;
2944     *)
2945       separate_arg=no
2946       ;;
2947   esac
2948
2949   skip_targ=no
2950   case $ac_arg in
2951 changequote(,)
2952   --with-* | --without-*)
2953     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2954
2955     case $libopt in
2956     *[-_]include)
2957       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2958       ;;
2959     *[-_]lib)
2960       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2961       ;;
2962     *)
2963       lib=$libopt
2964       ;;
2965     esac
2966 changequote([,])
2967
2968     case $lib in
2969     mpc | mpfr | gmp | isl)
2970       # If we're processing --with-$lib, --with-$lib-include or
2971       # --with-$lib-lib, for one of the libs above, and target is
2972       # different from host, don't pass the current argument to any
2973       # target library's configure.
2974       if test x$is_cross_compiler = xyes; then
2975         skip_targ=yes
2976       fi
2977       ;;
2978     esac
2979     ;;
2980   esac
2981
2982   case "$ac_arg" in
2983     --cache-file=/dev/null | \
2984     -cache-file=/dev/null )
2985       # Handled here to avoid the test to skip args below.
2986       baseargs="$baseargs '$ac_arg'"
2987       tbaseargs="$tbaseargs '$ac_arg'"
2988       # Assert: $separate_arg should always be no.
2989       keep_next=$separate_arg
2990       ;;
2991     --no*)
2992       continue
2993       ;;
2994     --c* | \
2995     --sr* | \
2996     --ho* | \
2997     --bu* | \
2998     --t* | \
2999     --program-* | \
3000     -cache_file* | \
3001     -srcdir* | \
3002     -host* | \
3003     -build* | \
3004     -target* | \
3005     -program-prefix* | \
3006     -program-suffix* | \
3007     -program-transform-name* )
3008       skip_next=$separate_arg
3009       continue
3010       ;;
3011     -*)
3012       # An option.  Add it.
3013       case $ac_arg in
3014         *\'*)
3015           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3016       esac
3017       baseargs="$baseargs '$ac_arg'"
3018       if test X"$skip_targ" = Xno; then
3019         tbaseargs="$tbaseargs '$ac_arg'"
3020       fi
3021       keep_next=$separate_arg
3022       ;;
3023     *)
3024       # Either a variable assignment, or a nonopt (triplet).  Don't
3025       # pass it down; let the Makefile handle this.
3026       continue
3027       ;;
3028   esac
3029 done
3030 # Remove the initial space we just introduced and, as these will be
3031 # expanded by make, quote '$'.
3032 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3033
3034 # Add in --program-transform-name, after --program-prefix and
3035 # --program-suffix have been applied to it.  Autoconf has already
3036 # doubled dollar signs and backslashes in program_transform_name; we want
3037 # the backslashes un-doubled, and then the entire thing wrapped in single
3038 # quotes, because this will be expanded first by make and then by the shell.
3039 # Also, because we want to override the logic in subdir configure scripts to
3040 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3041 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3042 ${program_transform_name}
3043 EOF_SED
3044 gcc_transform_name=`cat conftestsed.out`
3045 rm -f conftestsed.out
3046 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3047 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3048 if test "$silent" = yes; then
3049   baseargs="$baseargs --silent"
3050   tbaseargs="$tbaseargs --silent"
3051 fi
3052 baseargs="$baseargs --disable-option-checking"
3053 tbaseargs="$tbaseargs --disable-option-checking"
3054
3055 # Record and document user additions to sub configure arguments.
3056 AC_ARG_VAR([build_configargs],
3057            [additional configure arguments for build directories])
3058 AC_ARG_VAR([host_configargs],
3059            [additional configure arguments for host directories])
3060 AC_ARG_VAR([target_configargs],
3061            [additional configure arguments for target directories])
3062
3063 # For the build-side libraries, we just need to pretend we're native,
3064 # and not use the same cache file.  Multilibs are neither needed nor
3065 # desired.  We can't even use the same cache file for all build-side
3066 # libraries, as they're compiled differently; some with C, some with
3067 # C++ or with different feature-enabling options.
3068 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3069
3070 # For host modules, accept cache file option, or specification as blank.
3071 case "${cache_file}" in
3072 "") # empty
3073   cache_file_option="" ;;
3074 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3075   cache_file_option="--cache-file=${cache_file}" ;;
3076 *) # relative path
3077   cache_file_option="--cache-file=../${cache_file}" ;;
3078 esac
3079
3080 # Host dirs don't like to share a cache file either, horribly enough.
3081 # This seems to be due to autoconf 2.5x stupidity.
3082 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3083
3084 target_configargs="$target_configargs ${tbaseargs}"
3085
3086 # Passing a --with-cross-host argument lets the target libraries know
3087 # whether they are being built with a cross-compiler or being built
3088 # native.  However, it would be better to use other mechanisms to make the
3089 # sorts of decisions they want to make on this basis.  Please consider
3090 # this option to be deprecated.  FIXME.
3091 if test x${is_cross_compiler} = xyes ; then
3092   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3093 fi
3094
3095 # Special user-friendly check for native x86_64-linux build, if
3096 # multilib is not explicitly enabled.
3097 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3098   x86_64-*linux*:yes:$build:$build:)
3099     # Make sure we have a development environment that handles 32-bit
3100     dev64=no
3101     echo "int main () { return 0; }" > conftest.c
3102     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3103     if test $? = 0 ; then
3104       if test -s conftest || test -s conftest.exe ; then
3105         dev64=yes
3106       fi
3107     fi
3108     rm -f conftest*
3109     if test x${dev64} != xyes ; then
3110       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.])
3111     fi
3112     ;;
3113 esac
3114
3115 # Default to --enable-multilib.
3116 if test x${enable_multilib} = x ; then
3117   target_configargs="--enable-multilib ${target_configargs}"
3118 fi
3119
3120 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3121 # changed from the earlier setting of with_newlib.
3122 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3123   target_configargs="--with-newlib ${target_configargs}"
3124 fi
3125
3126 # Different target subdirs use different values of certain variables
3127 # (notably CXX).  Worse, multilibs use *lots* of different values.
3128 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3129 # it doesn't automatically accept command-line overrides of them.
3130 # This means it's not safe for target subdirs to share a cache file,
3131 # which is disgusting, but there you have it.  Hopefully this can be
3132 # fixed in future.  It's still worthwhile to use a cache file for each
3133 # directory.  I think.
3134
3135 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3136 # We need to pass --target, as newer autoconf's requires consistency
3137 # for target_alias and gcc doesn't manage it consistently.
3138 target_configargs="--cache-file=./config.cache ${target_configargs}"
3139
3140 FLAGS_FOR_TARGET=
3141 case " $target_configdirs " in
3142  *" newlib "*)
3143   case " $target_configargs " in
3144   *" --with-newlib "*)
3145    case "$target" in
3146     *-cygwin*)
3147       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3148       ;;
3149    esac
3150
3151    # If we're not building GCC, don't discard standard headers.
3152    if test -d ${srcdir}/gcc; then
3153      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3154
3155      if test "${build}" != "${host}"; then
3156        # On Canadian crosses, CC_FOR_TARGET will have already been set
3157        # by `configure', so we won't have an opportunity to add -Bgcc/
3158        # to it.  This is right: we don't want to search that directory
3159        # for binaries, but we want the header files in there, so add
3160        # them explicitly.
3161        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3162
3163        # Someone might think of using the pre-installed headers on
3164        # Canadian crosses, in case the installed compiler is not fully
3165        # compatible with the compiler being built.  In this case, it
3166        # would be better to flag an error than risking having
3167        # incompatible object files being constructed.  We can't
3168        # guarantee that an error will be flagged, but let's hope the
3169        # compiler will do it, when presented with incompatible header
3170        # files.
3171      fi
3172    fi
3173
3174    case "${target}-${is_cross_compiler}" in
3175    i[[3456789]]86-*-linux*-no)
3176       # Here host == target, so we don't need to build gcc,
3177       # so we don't want to discard standard headers.
3178       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3179       ;;
3180    *)
3181       # If we're building newlib, use its generic headers last, but search
3182       # for any libc-related directories first (so make it the last -B
3183       # switch).
3184       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3185
3186       # If we're building libgloss, find the startup file, simulator library
3187       # and linker script.
3188       case " $target_configdirs " in
3189         *" libgloss "*)
3190         # Look for startup file, simulator library and maybe linker script.
3191         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3192         # Look for libnosys.a in case the target needs it.
3193         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3194         # Most targets have the linker script in the source directory.
3195         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3196         ;;
3197       esac
3198       ;;
3199    esac
3200    ;;
3201   esac
3202   ;;
3203 esac
3204
3205 case "$target" in
3206   x86_64-*mingw* | *-w64-mingw*)
3207   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3208   # however, use a symlink named 'mingw' in ${prefix} .
3209     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3210     ;;
3211   *-mingw*)
3212   # MinGW can't be handled as Cygwin above since it does not use newlib.
3213     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3214     ;;
3215 esac
3216
3217 # Allow the user to override the flags for
3218 # our build compiler if desired.
3219 if test x"${build}" = x"${host}" ; then
3220   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3221   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3222   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3223 fi
3224
3225 # On Canadian crosses, we'll be searching the right directories for
3226 # the previously-installed cross compiler, so don't bother to add
3227 # flags for directories within the install tree of the compiler
3228 # being built; programs in there won't even run.
3229 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3230   # Search for pre-installed headers if nothing else fits.
3231   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3232 fi
3233
3234 if test "x${use_gnu_ld}" = x &&
3235    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3236   # Arrange for us to find uninstalled linker scripts.
3237   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3238 fi
3239
3240 # Search for other target-specific linker scripts and such.
3241 case "${target}" in
3242   mep*)
3243     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3244     ;;
3245 esac
3246
3247 # Makefile fragments.
3248 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3249 do
3250   eval fragval=\$$frag
3251   if test $fragval != /dev/null; then
3252     eval $frag=${srcdir}/$fragval
3253   fi
3254 done
3255 AC_SUBST_FILE(host_makefile_frag)
3256 AC_SUBST_FILE(target_makefile_frag)
3257 AC_SUBST_FILE(alphaieee_frag)
3258 AC_SUBST_FILE(ospace_frag)
3259
3260 # Miscellanea: directories, flags, etc.
3261 AC_SUBST(RPATH_ENVVAR)
3262 AC_SUBST(GCC_SHLIB_SUBDIR)
3263 AC_SUBST(tooldir)
3264 AC_SUBST(build_tooldir)
3265 AC_SUBST(CONFIGURE_GDB_TK)
3266 AC_SUBST(GDB_TK)
3267 AC_SUBST(INSTALL_GDB_TK)
3268
3269 # Build module lists & subconfigure args.
3270 AC_SUBST(build_configargs)
3271 AC_SUBST(build_configdirs)
3272
3273 # Host module lists & subconfigure args.
3274 AC_SUBST(host_configargs)
3275 AC_SUBST(configdirs)
3276 AC_SUBST(target_configdirs)
3277
3278 # Target module lists & subconfigure args.
3279 AC_SUBST(target_configargs)
3280
3281
3282 # Build tools.
3283 AC_SUBST(AR_FOR_BUILD)
3284 AC_SUBST(AS_FOR_BUILD)
3285 AC_SUBST(CC_FOR_BUILD)
3286 AC_SUBST(CFLAGS_FOR_BUILD)
3287 AC_SUBST(CXXFLAGS_FOR_BUILD)
3288 AC_SUBST(CXX_FOR_BUILD)
3289 AC_SUBST(DLLTOOL_FOR_BUILD)
3290 AC_SUBST(GCJ_FOR_BUILD)
3291 AC_SUBST(GFORTRAN_FOR_BUILD)
3292 AC_SUBST(GOC_FOR_BUILD)
3293 AC_SUBST(LDFLAGS_FOR_BUILD)
3294 AC_SUBST(LD_FOR_BUILD)
3295 AC_SUBST(NM_FOR_BUILD)
3296 AC_SUBST(RANLIB_FOR_BUILD)
3297 AC_SUBST(WINDMC_FOR_BUILD)
3298 AC_SUBST(WINDRES_FOR_BUILD)
3299
3300 # Generate default definitions for YACC, M4, LEX and other programs that run
3301 # on the build machine.  These are used if the Makefile can't locate these
3302 # programs in objdir.
3303 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3304
3305 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3306 case " $build_configdirs " in
3307   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3308 esac
3309
3310 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3311 case " $build_configdirs " in
3312   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3313 esac
3314
3315 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3316 case " $build_configdirs " in
3317   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3318 esac
3319
3320 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3321 case " $build_configdirs " in
3322   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3323   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3324 esac
3325
3326 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3327 case " $build_configdirs " in
3328   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3329 esac
3330
3331 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3332 case " $build_configdirs " in
3333   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3334   *)
3335 changequote(,)
3336     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3337     # higher, else we use the "missing" dummy.
3338     if ${MAKEINFO} --version \
3339        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3340       :
3341     else
3342       MAKEINFO="$MISSING makeinfo"
3343     fi
3344     ;;
3345 changequote([,])
3346 esac
3347
3348 # FIXME: expect and dejagnu may become build tools?
3349
3350 AC_CHECK_PROGS(EXPECT, expect, expect)
3351 case " $configdirs " in
3352   *" expect "*)
3353     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3354     ;;
3355 esac
3356
3357 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3358 case " $configdirs " in
3359   *" dejagnu "*)
3360     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3361     ;;
3362 esac
3363
3364
3365 # Host tools.
3366 NCN_STRICT_CHECK_TOOLS(AR, ar)
3367 NCN_STRICT_CHECK_TOOLS(AS, as)
3368 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3369 NCN_STRICT_CHECK_TOOLS(LD, ld)
3370 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3371 NCN_STRICT_CHECK_TOOLS(NM, nm)
3372 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3373 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3374 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3375 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3376 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3377 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3378 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3379 AC_SUBST(CC)
3380 AC_SUBST(CXX)
3381 AC_SUBST(CFLAGS)
3382 AC_SUBST(CXXFLAGS)
3383
3384 # Target tools.
3385 AC_ARG_WITH([build-time-tools],
3386   [AS_HELP_STRING([--with-build-time-tools=PATH],
3387                   [use given path to find target tools during the build])],
3388   [case x"$withval" in
3389      x/*) ;;
3390      *)
3391        with_build_time_tools=
3392        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3393        ;;
3394    esac],
3395   [with_build_time_tools=])
3396
3397 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3398 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3399 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3400 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3401 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3402 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3403
3404 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3405 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3406 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3407 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3408 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3409 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3410 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3411 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3412 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3413 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3414 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3415 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3416 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3417
3418 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3419
3420 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3421 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3422 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3423 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3424 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3425                 [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],
3426                 c++)
3427 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3428                 [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],
3429                 c++)
3430 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3431 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3432 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3433                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3434 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3435                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3436 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3437                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3438 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3439 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3440 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3441 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3442 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3443 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3444 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3445 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3446 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3447 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3448
3449 AC_SUBST(FLAGS_FOR_TARGET)
3450 AC_SUBST(RAW_CXX_FOR_TARGET)
3451
3452 # Certain tools may need extra flags.
3453 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3454 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3455 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3456
3457 # When building target libraries, except in a Canadian cross, we use
3458 # the same toolchain as the compiler we just built.
3459 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3460 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3461 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3462 if test $host = $build; then
3463   case " $configdirs " in
3464     *" gcc "*)
3465       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3466       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3467       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3468       ;;
3469   esac
3470 fi
3471
3472 AC_SUBST(COMPILER_AS_FOR_TARGET)
3473 AC_SUBST(COMPILER_LD_FOR_TARGET)
3474 AC_SUBST(COMPILER_NM_FOR_TARGET)
3475
3476 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3477 AC_ARG_ENABLE(maintainer-mode,
3478 [AS_HELP_STRING([--enable-maintainer-mode],
3479                 [enable make rules and dependencies not useful
3480                  (and sometimes confusing) to the casual installer])],
3481       USE_MAINTAINER_MODE=$enableval,
3482       USE_MAINTAINER_MODE=no)
3483 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3484 AC_SUBST(MAINTAINER_MODE_TRUE)
3485 AC_SUBST(MAINTAINER_MODE_FALSE)
3486 if test "$USE_MAINTAINER_MODE" = yes; then
3487   MAINTAINER_MODE_TRUE=
3488   MAINTAINER_MODE_FALSE='#'
3489 else
3490   MAINTAINER_MODE_TRUE='#'
3491   MAINTAINER_MODE_FALSE=
3492 fi
3493 MAINT=$MAINTAINER_MODE_TRUE
3494 AC_SUBST(MAINT)dnl
3495
3496 # ---------------------
3497 # GCC bootstrap support
3498 # ---------------------
3499
3500 # Stage specific cflags for build.
3501 stage1_cflags="-g"
3502 case $build in
3503   vax-*-*)
3504     case ${GCC} in
3505       yes) stage1_cflags="-g -Wa,-J" ;;
3506       *) stage1_cflags="-g -J" ;;
3507     esac ;;
3508 esac
3509
3510 AC_SUBST(stage1_cflags)
3511
3512 # Enable --enable-checking in stage1 of the compiler.
3513 AC_ARG_ENABLE(stage1-checking,
3514 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3515                 [choose additional checking for stage1 of the compiler])],
3516 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3517 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3518   # For --disable-checking or implicit --enable-checking=release, avoid
3519   # setting --enable-checking=gc in the default stage1 checking for LTO
3520   # bootstraps.  See PR62077.
3521   case $BUILD_CONFIG in
3522     *lto*)
3523       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3524     *)
3525       stage1_checking=--enable-checking=yes,types;;
3526   esac
3527   if test "x$enable_checking" = x && \
3528      test -d ${srcdir}/gcc && \
3529      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3530     stage1_checking=--enable-checking=yes,types,extra
3531   fi
3532 else
3533   stage1_checking=--enable-checking=$enable_checking,types
3534 fi])
3535 AC_SUBST(stage1_checking)
3536
3537 # Enable -Werror in bootstrap stage2 and later.
3538 AC_ARG_ENABLE(werror,
3539 [AS_HELP_STRING([--enable-werror],
3540                 [enable -Werror in bootstrap stage2 and later])], [],
3541 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3542   enable_werror=yes
3543 else
3544   enable_werror=no
3545 fi])
3546 case ${enable_werror} in
3547   yes) stage2_werror_flag="--enable-werror-always" ;;
3548   *) stage2_werror_flag="" ;;
3549 esac
3550 AC_SUBST(stage2_werror_flag)
3551
3552 # Enable --enable-host-shared.
3553 AC_ARG_ENABLE(host-shared,
3554 [AS_HELP_STRING([--enable-host-shared],
3555                 [build host code as shared libraries])],
3556 [host_shared=$enableval], [host_shared=no])
3557 AC_SUBST(host_shared)
3558
3559 # PR jit/64780: Require the user to explicitly specify
3560 # --enable-host-shared if the jit is enabled, hinting
3561 # that they might want to do a separate configure/build of
3562 # the jit, to avoid users from slowing down the rest of the
3563 # compiler by enabling the jit.
3564 if test ${host_shared} = "no" ; then
3565   case "${enable_languages}" in
3566     *jit*)
3567       AC_MSG_ERROR([
3568 Enabling language "jit" requires --enable-host-shared.
3569
3570 --enable-host-shared typically slows the rest of the compiler down by
3571 a few %, so you must explicitly enable it.
3572
3573 If you want to build both the jit and the regular compiler, it is often
3574 best to do this via two separate configure/builds, in separate
3575 directories, to avoid imposing the performance cost of
3576 --enable-host-shared on the regular compiler.])
3577       ;;
3578     *)
3579       ;;
3580   esac
3581 fi
3582
3583 # Specify what files to not compare during bootstrap.
3584
3585 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3586 case "$target" in
3587   hppa*64*-*-hpux*) ;;
3588   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3589   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3590 esac
3591 AC_SUBST(compare_exclusions)
3592
3593 AC_CONFIG_FILES([Makefile],
3594   [sed "$extrasub_build" Makefile |
3595    sed "$extrasub_host" |
3596    sed "$extrasub_target" > mf$$
3597    mv -f mf$$ Makefile],
3598   [extrasub_build="$extrasub_build"
3599    extrasub_host="$extrasub_host"
3600    extrasub_target="$extrasub_target"])
3601 AC_OUTPUT