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*-*-*)
 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   sh64-*-* | sh5*-*-*)
 786     ;;
 787   sparc*-*-*)
 788     ;;
 789   x86_64-*-*)
 790     ;;
 791   *-*-*)
 792     unsupported_languages="$unsupported_languages java"
 793     ;;
 794 esac
 795
 796 # Disable Java, libgcj or related libraries for some systems.
 797 case "${target}" in
 798   powerpc-*-darwin*)
 799     ;;
 800   i[[3456789]]86-*-darwin*)
 801     ;;
 802   x86_64-*-darwin[[912]]*)
 803     ;;
 804   *-*-darwin*)
 805     noconfigdirs="$noconfigdirs ${libgcj}"
 806     ;;
 807   *-*-netware*)
 808     noconfigdirs="$noconfigdirs ${libgcj}"
 809     ;;
 810   *-*-rtems*)
 811     noconfigdirs="$noconfigdirs ${libgcj}"
 812     ;;
 813   *-*-tpf*)
 814     noconfigdirs="$noconfigdirs ${libgcj}"
 815     ;;
 816   *-*-uclinux*)
 817     noconfigdirs="$noconfigdirs ${libgcj}"
 818     ;;
 819   *-*-vxworks*)
 820     noconfigdirs="$noconfigdirs ${libgcj}"
 821     ;;
 822   alpha*-*-*vms*)
 823     noconfigdirs="$noconfigdirs ${libgcj}"
 824     ;;
 825   arm*-*-freebsd*)
 826     noconfigdirs="$noconfigdirs ${libgcj}"
 827     ;;
 828   arm-wince-pe)
 829     noconfigdirs="$noconfigdirs ${libgcj}"
 830     ;;
 831   arm*-*-symbianelf*)
 832     noconfigdirs="$noconfigdirs ${libgcj}"
 833     ;;
 834   bfin-*-*)
 835     noconfigdirs="$noconfigdirs target-boehm-gc"
 836     ;;
 837   cris-*-* | crisv32-*-*)
 838     unsupported_languages="$unsupported_languages java"
 839     case "${target}" in
 840       *-*-linux*)
 841         ;;
 842       *) # See PR46792 regarding target-libffi.
 843         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 844     esac
 845     ;;
 846   hppa*64*-*-linux*)
 847     # In this case, it's because the hppa64-linux target is for
 848     # the kernel only at this point and has no libc, and thus no
 849     # headers, crt*.o, etc., all of which are needed by these.
 850     unsupported_languages="$unsupported_languages java"
 851     ;;
 852   hppa*64*-*-hpux*)
 853     noconfigdirs="$noconfigdirs ${libgcj}"
 854     ;;
 855   hppa*-hp-hpux11*)
 856     ;;
 857   hppa*-*-hpux*)
 858     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 859     # build on HP-UX 10.20.
 860     noconfigdirs="$noconfigdirs ${libgcj}"
 861     ;;
 862   ia64*-*-*vms*)
 863     noconfigdirs="$noconfigdirs ${libgcj}"
 864     ;;
 865   i[[3456789]]86-w64-mingw*)
 866     noconfigdirs="$noconfigdirs ${libgcj}"
 867     ;;
 868   i[[3456789]]86-*-mingw*)
 869     noconfigdirs="$noconfigdirs ${libgcj}"
 870     ;;
 871   x86_64-*-mingw*)
 872     noconfigdirs="$noconfigdirs ${libgcj}"
 873     ;;
 874   mmix-*-*)
 875     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 876     ;;
 877   powerpc-*-aix*)
 878     # copied from rs6000-*-* entry
 879     noconfigdirs="$noconfigdirs ${libgcj}"
 880     ;;
 881   rs6000-*-aix*)
 882     noconfigdirs="$noconfigdirs ${libgcj}"
 883     ;;
 884   ft32-*-*)
 885     noconfigdirs="$noconfigdirs ${libgcj}"
 886     ;;
 887   *-*-lynxos*)
 888     noconfigdirs="$noconfigdirs ${libgcj}"
 889     ;;
 890 esac
 891
 892 # Disable the go frontend on systems where it is known to not work. Please keep
 893 # this in sync with contrib/config-list.mk.
 894 case "${target}" in
 895 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 896     unsupported_languages="$unsupported_languages go"
 897     ;;
 898 esac
 899
 900 # Disable libgo for some systems where it is known to not work.
 901 # For testing, you can easily override this with --enable-libgo.
 902 if test x$enable_libgo = x; then
 903     case "${target}" in
 904     *-*-darwin*)
 905         # PR 46986
 906         noconfigdirs="$noconfigdirs target-libgo"
 907         ;;
 908     *-*-cygwin* | *-*-mingw*)
 909         noconfigdirs="$noconfigdirs target-libgo"
 910         ;;
 911     *-*-aix*)
 912         noconfigdirs="$noconfigdirs target-libgo"
 913         ;;
 914     esac
 915 fi
 916
 917 # Default libgloss CPU subdirectory.
 918 libgloss_dir="$target_cpu"
 919
 920 case "${target}" in
 921   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 922     libgloss_dir=wince
 923     ;;
 924   aarch64*-*-* )
 925     libgloss_dir=aarch64
 926     ;;
 927   arm*-*-*)
 928     libgloss_dir=arm
 929     ;;
 930   cris-*-* | crisv32-*-*)
 931     libgloss_dir=cris
 932     ;;
 933   hppa*-*-*)
 934     libgloss_dir=pa
 935     ;;
 936   i[[3456789]]86-*-*)
 937     libgloss_dir=i386
 938     ;;
 939   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 940     libgloss_dir=m68hc11
 941     ;;
 942   m68*-*-* | fido-*-*)
 943     libgloss_dir=m68k
 944     ;;
 945   mips*-*-*)
 946     libgloss_dir=mips
 947     ;;
 948   powerpc*-*-*)
 949     libgloss_dir=rs6000
 950     ;;
 951   sparc*-*-*)
 952     libgloss_dir=sparc
 953     ;;
 954 esac
 955
 956 # Disable newlib and libgloss for various target OSes.
 957 case "${target}" in
 958   alpha*-dec-osf*)
 959     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 960     ;;
 961   i[[3456789]]86-*-linux*)
 962     # This section makes it possible to build newlib natively on linux.
 963     # If we are using a cross compiler then don't configure newlib.
 964     if test x${is_cross_compiler} != xno ; then
 965       noconfigdirs="$noconfigdirs target-newlib"
 966     fi
 967     noconfigdirs="$noconfigdirs target-libgloss"
 968     # If we are not using a cross compiler, do configure newlib.
 969     # Note however, that newlib will only be configured in this situation
 970     # if the --with-newlib option has been given, because otherwise
 971     # 'target-newlib' will appear in skipdirs.
 972     ;;
 973   i[[3456789]]86-*-rdos*)
 974     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 975     ;;
 976   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 977     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 978     ;;
 979   sparc-*-sunos4*)
 980     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 981     ;;
 982   *-*-aix*)
 983     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 984     ;;
 985   *-*-beos*)
 986     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 987     ;;
 988   *-*-chorusos)
 989     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 990     ;;
 991   *-*-dragonfly*)
 992     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 993     ;;
 994   *-*-freebsd*)
 995     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 996     ;;
 997   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 998     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 999     ;;
1000   *-*-lynxos*)
1001     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1002     ;;
1003   *-*-mingw*)
1004     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1005     ;;
1006   *-*-netbsd*)
1007     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1008     ;;
1009   *-*-netware*)
1010     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1011     ;;
1012   *-*-tpf*)
1013     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1014     ;;
1015   *-*-uclinux*)
1016     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1017     ;;
1018   *-*-vxworks*)
1019     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1020     ;;
1021 esac
1022
1023 case "${target}" in
1024   *-*-chorusos)
1025     ;;
1026   aarch64-*-darwin*)
1027     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1028     noconfigdirs="$noconfigdirs sim target-rda"
1029     ;;
1030   arm-*-darwin*)
1031     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1032     noconfigdirs="$noconfigdirs sim target-rda"
1033     ;;
1034   powerpc-*-darwin*)
1035     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1036     noconfigdirs="$noconfigdirs sim target-rda"
1037     ;;
1038   i[[3456789]]86-*-darwin*)
1039     noconfigdirs="$noconfigdirs ld gprof"
1040     noconfigdirs="$noconfigdirs sim target-rda"
1041     ;;
1042   x86_64-*-darwin[[912]]*)
1043     noconfigdirs="$noconfigdirs ld gas gprof"
1044     noconfigdirs="$noconfigdirs sim target-rda"
1045     ;;
1046   *-*-darwin*)
1047     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1048     noconfigdirs="$noconfigdirs sim target-rda"
1049     ;;
1050   *-*-dragonfly*)
1051     ;;
1052   *-*-freebsd*)
1053     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
1054         && test -f /usr/local/include/gmp.h; then
1055       with_gmp=/usr/local
1056     fi
1057     ;;
1058   *-*-kaos*)
1059     # Remove unsupported stuff on all kaOS configurations.
1060     noconfigdirs="$noconfigdirs target-libgloss"
1061     ;;
1062   *-*-netbsd*)
1063     ;;
1064   *-*-netware*)
1065     ;;
1066   *-*-rtems*)
1067     noconfigdirs="$noconfigdirs target-libgloss"
1068     # this is not caught below because this stanza matches earlier
1069     case $target in
1070       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
1071     esac
1072     ;;
1073     # The tpf target doesn't support gdb yet.
1074   *-*-tpf*)
1075     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1076     ;;
1077   *-*-uclinux*)
1078     noconfigdirs="$noconfigdirs target-rda"
1079     ;;
1080   *-*-vxworks*)
1081     ;;
1082   alpha*-dec-osf*)
1083     # ld works, but does not support shared libraries.
1084     # gas doesn't generate exception information.
1085     noconfigdirs="$noconfigdirs gas ld"
1086     ;;
1087   alpha*-*-*vms*)
1088     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1089     ;;
1090   alpha*-*-*)
1091     # newlib is not 64 bit ready
1092     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1093     ;;
1094   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1095     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1096     ;;
1097   arc-*-*|arceb-*-*)
1098     noconfigdirs="$noconfigdirs target-libgloss"
1099     ;;
1100   arm-*-pe*)
1101     noconfigdirs="$noconfigdirs target-libgloss"
1102     ;;
1103   arm-*-riscix*)
1104     noconfigdirs="$noconfigdirs ld target-libgloss"
1105     ;;
1106   avr-*-rtems*)
1107     ;;
1108   avr-*-*)
1109     if test x${with_avrlibc} != xno; then
1110       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1111     fi
1112     ;;
1113   c4x-*-* | tic4x-*-*)
1114     noconfigdirs="$noconfigdirs target-libgloss"
1115     ;;
1116   tic54x-*-*)
1117     noconfigdirs="$noconfigdirs target-libgloss gdb"
1118     ;;
1119   d10v-*-*)
1120     noconfigdirs="$noconfigdirs target-libgloss"
1121     ;;
1122   d30v-*-*)
1123     noconfigdirs="$noconfigdirs gdb"
1124     ;;
1125   fr30-*-elf*)
1126     noconfigdirs="$noconfigdirs gdb"
1127     ;;
1128   ft32-*-*)
1129     noconfigdirs="$noconfigdirs target-rda gprof"
1130     ;;
1131   moxie-*-*)
1132     noconfigdirs="$noconfigdirs"
1133     ;;
1134   h8300*-*-*)
1135     noconfigdirs="$noconfigdirs target-libgloss"
1136     ;;
1137   h8500-*-*)
1138     noconfigdirs="$noconfigdirs target-libgloss"
1139     ;;
1140   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1141     ;;
1142   hppa*64*-*-hpux*)
1143     noconfigdirs="$noconfigdirs gdb"
1144     ;;
1145   hppa*-*-hpux11*)
1146     noconfigdirs="$noconfigdirs gdb ld"
1147     ;;
1148   hppa*64*-*-linux*)
1149     ;;
1150   hppa*-*-linux*)
1151     ;;
1152   hppa*-*-*elf* | \
1153   hppa*-*-lites* | \
1154   hppa*-*-openbsd* | \
1155   hppa*64*-*-*)
1156     ;;
1157   hppa*-*-pro*)
1158     ;;
1159   hppa*-*-*)
1160     noconfigdirs="$noconfigdirs ld"
1161     ;;
1162   i960-*-*)
1163     noconfigdirs="$noconfigdirs gdb"
1164     ;;
1165   ia64*-*-elf*)
1166     # No gdb support yet.
1167     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1168     ;;
1169   ia64*-**-hpux*)
1170     # No ld support yet.
1171     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1172     ;;
1173   ia64*-*-*vms*)
1174     # No ld support yet.
1175     noconfigdirs="$noconfigdirs libgui itcl ld"
1176     ;;
1177   i[[3456789]]86-w64-mingw*)
1178     ;;
1179   i[[3456789]]86-*-mingw*)
1180     target_configdirs="$target_configdirs target-winsup"
1181     ;;
1182   *-*-cygwin*)
1183     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1184     noconfigdirs="$noconfigdirs target-libgloss"
1185     # always build newlib if winsup directory is present.
1186     if test -d "$srcdir/winsup/cygwin"; then
1187       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1188     elif test -d "$srcdir/newlib"; then
1189       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1190     fi
1191     ;;
1192   i[[3456789]]86-*-pe)
1193     noconfigdirs="$noconfigdirs target-libgloss"
1194     ;;
1195   i[[3456789]]86-*-sco3.2v5*)
1196     # The linker does not yet know about weak symbols in COFF,
1197     # and is not configured to handle mixed ELF and COFF.
1198     noconfigdirs="$noconfigdirs ld target-libgloss"
1199     ;;
1200   i[[3456789]]86-*-sco*)
1201     noconfigdirs="$noconfigdirs gprof target-libgloss"
1202     ;;
1203   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1204     noconfigdirs="$noconfigdirs target-libgloss"
1205     ;;
1206   i[[3456789]]86-*-sysv4*)
1207     noconfigdirs="$noconfigdirs target-libgloss"
1208     ;;
1209   i[[3456789]]86-*-beos*)
1210     noconfigdirs="$noconfigdirs gdb"
1211     ;;
1212   i[[3456789]]86-*-rdos*)
1213     noconfigdirs="$noconfigdirs gdb"
1214     ;;
1215   mmix-*-*)
1216     noconfigdirs="$noconfigdirs gdb"
1217     ;;
1218   mt-*-*)
1219     noconfigdirs="$noconfigdirs sim"
1220     ;;
1221   powerpc-*-aix*)
1222     # copied from rs6000-*-* entry
1223     noconfigdirs="$noconfigdirs gprof"
1224     ;;
1225   powerpc*-*-winnt* | powerpc*-*-pe*)
1226     target_configdirs="$target_configdirs target-winsup"
1227     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1228     # always build newlib.
1229     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1230     ;;
1231     # This is temporary until we can link against shared libraries
1232   powerpcle-*-solaris*)
1233     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1234     ;;
1235   powerpc-*-beos*)
1236     noconfigdirs="$noconfigdirs gdb"
1237     ;;
1238   rs6000-*-lynxos*)
1239     noconfigdirs="$noconfigdirs gprof"
1240     ;;
1241   rs6000-*-aix*)
1242     noconfigdirs="$noconfigdirs gprof"
1243     ;;
1244   rs6000-*-*)
1245     noconfigdirs="$noconfigdirs gprof"
1246     ;;
1247   m68k-apollo-*)
1248     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1249     ;;
1250   microblaze*)
1251     noconfigdirs="$noconfigdirs gprof"
1252     ;;
1253   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1254     if test x$with_newlib = xyes; then
1255       noconfigdirs="$noconfigdirs gprof"
1256     fi
1257     ;;
1258   mips*-*-irix5*)
1259     noconfigdirs="$noconfigdirs gprof target-libgloss"
1260     ;;
1261   mips*-*-irix6*)
1262     noconfigdirs="$noconfigdirs gprof target-libgloss"
1263     ;;
1264   mips*-*-bsd*)
1265     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1266     ;;
1267   mips*-*-linux*)
1268     ;;
1269   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1270   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1271     noconfigdirs="$noconfigdirs ld gas gprof"
1272     ;;
1273   mips*-*-*)
1274     noconfigdirs="$noconfigdirs gprof"
1275     ;;
1276   nds32*-*-*)
1277     noconfigdirs="$noconfigdirs gdb"
1278     ;;
1279   nvptx*-*-*)
1280     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1281     ;;
1282   or1k*-*-*)
1283     noconfigdirs="$noconfigdirs gdb"
1284     ;;
1285   sh-*-* | sh64-*-*)
1286     case "${target}" in
1287       sh*-*-elf)
1288          ;;
1289       *)
1290          noconfigdirs="$noconfigdirs target-libgloss" ;;
1291     esac
1292     ;;
1293   sparc-*-sunos4*)
1294     if test x${is_cross_compiler} = xno ; then
1295            use_gnu_ld=no
1296     fi
1297     ;;
1298   tic6x-*-*)
1299     noconfigdirs="$noconfigdirs sim"
1300     ;;
1301   tilepro*-*-* | tilegx*-*-*)
1302     noconfigdirs="$noconfigdirs sim"
1303     ;;
1304   v810-*-*)
1305     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1306     ;;
1307   vax-*-*)
1308     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1309     ;;
1310 esac
1311
1312 # If we aren't building newlib, then don't build libgloss, since libgloss
1313 # depends upon some newlib header files.
1314 case "${noconfigdirs}" in
1315   *target-libgloss*) ;;
1316   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1317 esac
1318
1319 # Work in distributions that contain no compiler tools, like Autoconf.
1320 host_makefile_frag=/dev/null
1321 if test -d ${srcdir}/config ; then
1322 case "${host}" in
1323   i[[3456789]]86-*-msdosdjgpp*)
1324     host_makefile_frag="config/mh-djgpp"
1325     ;;
1326   *-cygwin*)
1327     ACX_CHECK_CYGWIN_CAT_WORKS
1328     host_makefile_frag="config/mh-cygwin"
1329     ;;
1330   *-mingw*)
1331     host_makefile_frag="config/mh-mingw"
1332     ;;
1333   alpha*-linux*)
1334     host_makefile_frag="config/mh-alpha-linux"
1335     ;;
1336   hppa*-hp-hpux10*)
1337     host_makefile_frag="config/mh-pa-hpux10"
1338     ;;
1339   hppa*-hp-hpux*)
1340     host_makefile_frag="config/mh-pa"
1341     ;;
1342   hppa*-*)
1343     host_makefile_frag="config/mh-pa"
1344     ;;
1345   *-*-darwin*)
1346     host_makefile_frag="config/mh-darwin"
1347     ;;
1348   powerpc-*-aix*)
1349     host_makefile_frag="config/mh-ppc-aix"
1350     ;;
1351   rs6000-*-aix*)
1352     host_makefile_frag="config/mh-ppc-aix"
1353     ;;
1354 esac
1355 fi
1356
1357 if test "${build}" != "${host}" ; then
1358   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1359   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1360   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1361   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1362   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1363   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1364   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1365   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1366   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1367   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1368   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1369   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1370   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1371 else
1372   AR_FOR_BUILD="\$(AR)"
1373   AS_FOR_BUILD="\$(AS)"
1374   CC_FOR_BUILD="\$(CC)"
1375   CXX_FOR_BUILD="\$(CXX)"
1376   GCJ_FOR_BUILD="\$(GCJ)"
1377   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1378   GOC_FOR_BUILD="\$(GOC)"
1379   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1380   LD_FOR_BUILD="\$(LD)"
1381   NM_FOR_BUILD="\$(NM)"
1382   RANLIB_FOR_BUILD="\$(RANLIB)"
1383   WINDRES_FOR_BUILD="\$(WINDRES)"
1384   WINDMC_FOR_BUILD="\$(WINDMC)"
1385 fi
1386
1387 AC_PROG_CC
1388 AC_PROG_CXX
1389
1390 # We must set the default linker to the linker used by gcc for the correct
1391 # operation of libtool.  If LD is not defined and we are using gcc, try to
1392 # set the LD default to the ld used by gcc.
1393 if test -z "$LD"; then
1394   if test "$GCC" = yes; then
1395     case $build in
1396     *-*-mingw*)
1397       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1398     *)
1399       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1400     esac
1401     case $gcc_prog_ld in
1402     # Accept absolute paths.
1403     [[\\/]* | [A-Za-z]:[\\/]*)]
1404       LD="$gcc_prog_ld" ;;
1405     esac
1406   fi
1407 fi
1408
1409 # Check whether -static-libstdc++ -static-libgcc is supported.
1410 have_static_libs=no
1411 if test "$GCC" = yes; then
1412   saved_LDFLAGS="$LDFLAGS"
1413
1414   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1415   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1416   AC_LANG_PUSH(C++)
1417   AC_LINK_IFELSE([
1418 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1419 #error -static-libstdc++ not implemented
1420 #endif
1421 int main() {}],
1422     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1423     [AC_MSG_RESULT([no])])
1424   AC_LANG_POP(C++)
1425
1426   LDFLAGS="$saved_LDFLAGS"
1427 fi
1428
1429 ACX_PROG_GNAT
1430 ACX_PROG_CMP_IGNORE_INITIAL
1431
1432 AC_ARG_ENABLE([bootstrap],
1433 [AS_HELP_STRING([--enable-bootstrap],
1434                 [enable bootstrapping @<:@yes if native build@:>@])],,
1435 enable_bootstrap=default)
1436
1437 # Issue errors and warnings for invalid/strange bootstrap combinations.
1438 if test -r $srcdir/gcc/configure; then
1439   have_compiler=yes
1440 else
1441   have_compiler=no
1442 fi
1443
1444 case "$have_compiler:$host:$target:$enable_bootstrap" in
1445   *:*:*:no) ;;
1446
1447   # Default behavior.  Enable bootstrap if we have a compiler
1448   # and we are in a native configuration.
1449   yes:$build:$build:default)
1450     enable_bootstrap=yes ;;
1451
1452   *:*:*:default)
1453     enable_bootstrap=no ;;
1454
1455   # We have a compiler and we are in a native configuration, bootstrap is ok
1456   yes:$build:$build:yes)
1457     ;;
1458
1459   # Other configurations, but we have a compiler.  Assume the user knows
1460   # what he's doing.
1461   yes:*:*:yes)
1462     AC_MSG_WARN([trying to bootstrap a cross compiler])
1463     ;;
1464
1465   # No compiler: if they passed --enable-bootstrap explicitly, fail
1466   no:*:*:yes)
1467     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1468
1469   # Fail if wrong command line
1470   *)
1471     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1472     ;;
1473 esac
1474
1475 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1476 # C++98 compiler can still start the bootstrap.
1477 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1478   CXX="$CXX -std=gnu++98"
1479 fi
1480
1481 # Used for setting $lt_cv_objdir
1482 _LT_CHECK_OBJDIR
1483
1484 # Check for GMP, MPFR and MPC
1485 gmplibs="-lmpc -lmpfr -lgmp"
1486 gmpinc=
1487 have_gmp=no
1488
1489 # Specify a location for mpc
1490 # check for this first so it ends up on the link line before mpfr.
1491 AC_ARG_WITH(mpc,
1492 [AS_HELP_STRING([--with-mpc=PATH],
1493                 [specify prefix directory for installed MPC package.
1494                  Equivalent to --with-mpc-include=PATH/include
1495                  plus --with-mpc-lib=PATH/lib])])
1496 AC_ARG_WITH(mpc-include,
1497 [AS_HELP_STRING([--with-mpc-include=PATH],
1498                 [specify directory for installed MPC include files])])
1499 AC_ARG_WITH(mpc-lib,
1500 [AS_HELP_STRING([--with-mpc-lib=PATH],
1501                 [specify directory for the installed MPC library])])
1502
1503 if test "x$with_mpc" != x; then
1504   gmplibs="-L$with_mpc/lib $gmplibs"
1505   gmpinc="-I$with_mpc/include $gmpinc"
1506 fi
1507 if test "x$with_mpc_include" != x; then
1508   gmpinc="-I$with_mpc_include $gmpinc"
1509 fi
1510 if test "x$with_mpc_lib" != x; then
1511   gmplibs="-L$with_mpc_lib $gmplibs"
1512 fi
1513 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1514   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1515   gmpinc='-I$$s/mpc/src '"$gmpinc"
1516   # Do not test the mpc version.  Assume that it is sufficient, since
1517   # it is in the source tree, and the library has not been built yet
1518   # but it would be included on the link line in the version check below
1519   # hence making the test fail.
1520   have_gmp=yes
1521 fi
1522
1523 # Specify a location for mpfr
1524 # check for this first so it ends up on the link line before gmp.
1525 AC_ARG_WITH(mpfr-dir,
1526 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1527 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1528 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1529
1530 AC_ARG_WITH(mpfr,
1531 [AS_HELP_STRING([--with-mpfr=PATH],
1532                 [specify prefix directory for installed MPFR package.
1533                  Equivalent to --with-mpfr-include=PATH/include
1534                  plus --with-mpfr-lib=PATH/lib])])
1535 AC_ARG_WITH(mpfr-include,
1536 [AS_HELP_STRING([--with-mpfr-include=PATH],
1537                 [specify directory for installed MPFR include files])])
1538 AC_ARG_WITH(mpfr-lib,
1539 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1540                 [specify directory for the installed MPFR library])])
1541
1542 if test "x$with_mpfr" != x; then
1543   gmplibs="-L$with_mpfr/lib $gmplibs"
1544   gmpinc="-I$with_mpfr/include $gmpinc"
1545 fi
1546 if test "x$with_mpfr_include" != x; then
1547   gmpinc="-I$with_mpfr_include $gmpinc"
1548 fi
1549 if test "x$with_mpfr_lib" != x; then
1550   gmplibs="-L$with_mpfr_lib $gmplibs"
1551 fi
1552 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1553   # MPFR v3.1.0 moved the sources into a src sub-directory.
1554   if test -d ${srcdir}/mpfr/src; then
1555     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1556     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1557     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1558   else
1559     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1560     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1561     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1562   fi
1563   # Do not test the mpfr version.  Assume that it is sufficient, since
1564   # it is in the source tree, and the library has not been built yet
1565   # but it would be included on the link line in the version check below
1566   # hence making the test fail.
1567   have_gmp=yes
1568 fi
1569
1570 # Specify a location for gmp
1571 AC_ARG_WITH(gmp-dir,
1572 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1573 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1574 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1575
1576 AC_ARG_WITH(gmp,
1577 [AS_HELP_STRING([--with-gmp=PATH],
1578                 [specify prefix directory for the installed GMP package.
1579                  Equivalent to --with-gmp-include=PATH/include
1580                  plus --with-gmp-lib=PATH/lib])])
1581 AC_ARG_WITH(gmp-include,
1582 [AS_HELP_STRING([--with-gmp-include=PATH],
1583                 [specify directory for installed GMP include files])])
1584 AC_ARG_WITH(gmp-lib,
1585 [AS_HELP_STRING([--with-gmp-lib=PATH],
1586                 [specify directory for the installed GMP library])])
1587
1588
1589 if test "x$with_gmp" != x; then
1590   gmplibs="-L$with_gmp/lib $gmplibs"
1591   gmpinc="-I$with_gmp/include $gmpinc"
1592 fi
1593 if test "x$with_gmp_include" != x; then
1594   gmpinc="-I$with_gmp_include $gmpinc"
1595 fi
1596 if test "x$with_gmp_lib" != x; then
1597   gmplibs="-L$with_gmp_lib $gmplibs"
1598 fi
1599 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1600   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1601   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1602   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1603   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1604   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1605   # Do not test the gmp version.  Assume that it is sufficient, since
1606   # it is in the source tree, and the library has not been built yet
1607   # but it would be included on the link line in the version check below
1608   # hence making the test fail.
1609   have_gmp=yes
1610 fi
1611
1612 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1613   have_gmp=yes
1614   saved_CFLAGS="$CFLAGS"
1615   CFLAGS="$CFLAGS $gmpinc"
1616   # Check for the recommended and required versions of GMP.
1617   AC_MSG_CHECKING([for the correct version of gmp.h])
1618   AC_TRY_COMPILE([#include "gmp.h"],[
1619   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1620   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1621   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1622   choke me
1623   #endif
1624   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1625   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1626   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1627   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1628   choke me
1629   #endif
1630   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1631    [AC_MSG_RESULT([no]); have_gmp=no])
1632
1633   # If we have GMP, check the MPFR version.
1634   if test x"$have_gmp" = xyes; then
1635     # Check for the recommended and required versions of MPFR.
1636     AC_MSG_CHECKING([for the correct version of mpfr.h])
1637     AC_TRY_COMPILE([#include <gmp.h>
1638     #include <mpfr.h>],[
1639     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1640     choke me
1641     #endif
1642     ], [AC_TRY_COMPILE([#include <gmp.h>
1643     #include <mpfr.h>],[
1644     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1645     choke me
1646     #endif
1647     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1648      [AC_MSG_RESULT([no]); have_gmp=no])
1649   fi
1650
1651   # Check for the MPC header version.
1652   if test x"$have_gmp" = xyes ; then
1653     # Check for the recommended and required versions of MPC.
1654     AC_MSG_CHECKING([for the correct version of mpc.h])
1655     AC_TRY_COMPILE([#include <mpc.h>],[
1656     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1657     choke me
1658     #endif
1659     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1660     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1661     choke me
1662     #endif
1663     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1664      [AC_MSG_RESULT([no]); have_gmp=no])
1665   fi
1666
1667   # Now check the MPFR library.
1668   if test x"$have_gmp" = xyes; then
1669     saved_LIBS="$LIBS"
1670     LIBS="$LIBS $gmplibs"
1671     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1672     AC_TRY_LINK([#include <mpc.h>],[
1673     mpfr_t n;
1674     mpfr_t x;
1675     mpc_t c;
1676     int t;
1677     mpfr_init (n);
1678     mpfr_init (x);
1679     mpfr_atan2 (n, n, x, GMP_RNDN);
1680     mpfr_erfc (n, x, GMP_RNDN);
1681     mpfr_subnormalize (x, t, GMP_RNDN);
1682     mpfr_clear(n);
1683     mpfr_clear(x);
1684     mpc_init2 (c, 53);
1685     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1686     mpc_cosh (c, c, MPC_RNDNN);
1687     mpc_pow (c, c, c, MPC_RNDNN);
1688     mpc_acosh (c, c, MPC_RNDNN);
1689     mpc_clear (c);
1690     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1691     LIBS="$saved_LIBS"
1692   fi
1693
1694   CFLAGS="$saved_CFLAGS"
1695
1696 # The library versions listed in the error message below should match
1697 # the HARD-minimums enforced above.
1698   if test x$have_gmp != xyes; then
1699     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1700 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1701 their locations.  Source code for these libraries can be found at
1702 their respective hosting sites as well as at
1703 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1704 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1705 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1706 make sure that you have installed both the libraries and the header
1707 files.  They may be located in separate packages.])
1708   fi
1709 fi
1710
1711 # Flags needed for both GMP, MPFR and/or MPC.
1712 AC_SUBST(gmplibs)
1713 AC_SUBST(gmpinc)
1714 AC_SUBST(extra_mpfr_configure_flags)
1715 AC_SUBST(extra_mpc_gmp_configure_flags)
1716 AC_SUBST(extra_mpc_mpfr_configure_flags)
1717 AC_SUBST(extra_isl_gmp_configure_flags)
1718
1719 # Libraries to use for stage1 or when not bootstrapping.
1720 AC_ARG_WITH(stage1-libs,
1721 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1722 [if test "$withval" = "no" -o "$withval" = "yes"; then
1723    stage1_libs=
1724  else
1725    stage1_libs=$withval
1726  fi],
1727 [stage1_libs=])
1728 AC_SUBST(stage1_libs)
1729
1730 # Linker flags to use for stage1 or when not bootstrapping.
1731 AC_ARG_WITH(stage1-ldflags,
1732 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1733 [if test "$withval" = "no" -o "$withval" = "yes"; then
1734    stage1_ldflags=
1735  else
1736    stage1_ldflags=$withval
1737  fi],
1738 [stage1_ldflags=
1739  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1740  # if supported.  But if the user explicitly specified the libraries to use,
1741  # trust that they are doing what they want.
1742  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1743    stage1_ldflags="-static-libstdc++ -static-libgcc"
1744  fi])
1745 AC_SUBST(stage1_ldflags)
1746
1747 # Libraries to use for stage2 and later builds.
1748 AC_ARG_WITH(boot-libs,
1749 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1750 [if test "$withval" = "no" -o "$withval" = "yes"; then
1751    poststage1_libs=
1752  else
1753    poststage1_libs=$withval
1754  fi],
1755 [poststage1_libs=])
1756 AC_SUBST(poststage1_libs)
1757
1758 # Linker flags to use for stage2 and later builds.
1759 AC_ARG_WITH(boot-ldflags,
1760 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1761                 [linker flags for stage2 and later])],
1762 [if test "$withval" = "no" -o "$withval" = "yes"; then
1763    poststage1_ldflags=
1764  else
1765    poststage1_ldflags=$withval
1766  fi],
1767 [poststage1_ldflags=
1768  # In stages 2 and 3, default to linking libstdc++ and libgcc
1769  # statically.  But if the user explicitly specified the libraries to
1770  # use, trust that they are doing what they want.
1771  if test "$poststage1_libs" = ""; then
1772    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1773  fi])
1774 AC_SUBST(poststage1_ldflags)
1775
1776 # GCC GRAPHITE dependency isl.
1777 # Basic setup is inlined here, actual checks are in config/isl.m4
1778
1779 AC_ARG_WITH(isl,
1780   [AS_HELP_STRING(
1781    [--with-isl=PATH],
1782    [Specify prefix directory for the installed isl package.
1783     Equivalent to --with-isl-include=PATH/include
1784     plus --with-isl-lib=PATH/lib])])
1785
1786 # Treat --without-isl as a request to disable
1787 # GRAPHITE support and skip all following checks.
1788 if test "x$with_isl" != "xno"; then
1789   # Check for isl
1790   dnl Provide configure switches and initialize islinc & isllibs
1791   dnl with user input.
1792   ISL_INIT_FLAGS
1793   dnl The versions of isl that work for Graphite
1794   ISL_CHECK_VERSION()
1795   dnl Only execute fail-action, if isl has been requested.
1796   ISL_IF_FAILED([
1797     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1798 fi
1799
1800 # If the isl check failed, disable builds of in-tree variant of isl
1801 if test "x$with_isl" = xno ||
1802    test "x$gcc_cv_isl" = xno; then
1803   noconfigdirs="$noconfigdirs isl"
1804   islinc=
1805 fi
1806
1807 AC_SUBST(isllibs)
1808 AC_SUBST(islinc)
1809
1810 # Check for LTO support.
1811 AC_ARG_ENABLE(lto,
1812 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1813 enable_lto=$enableval,
1814 enable_lto=yes; default_enable_lto=yes)
1815
1816 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1817   build_lto_plugin=yes
1818 ],[if test x"$default_enable_lto" = x"yes" ; then
1819     case $target in
1820       *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
1821       # On other non-ELF platforms, LTO has yet to be validated.
1822       *) enable_lto=no ;;
1823     esac
1824   else
1825   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1826   # It would also be nice to check the binutils support, but we don't
1827   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1828   # warn during gcc/ subconfigure; unless you're bootstrapping with
1829   # -flto it won't be needed until after installation anyway.
1830     case $target in
1831       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1832       *) if test x"$enable_lto" = x"yes"; then
1833         AC_MSG_ERROR([LTO support is not enabled for this target.])
1834         fi
1835       ;;
1836     esac
1837   fi
1838   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1839   # Build it unless LTO was explicitly disabled.
1840   case $target in
1841     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1842     *) ;;
1843   esac
1844 ])
1845
1846 AC_ARG_ENABLE(linker-plugin-configure-flags,
1847   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1848     [additional flags for configuring linker plugins @<:@none@:>@])],
1849   extra_linker_plugin_configure_flags=$enableval,
1850   extra_linker_plugin_configure_flags=)
1851 AC_SUBST(extra_linker_plugin_configure_flags)
1852 AC_ARG_ENABLE(linker-plugin-flags,
1853   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1854     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1855   extra_linker_plugin_flags=$enableval,
1856   extra_linker_plugin_flags=)
1857 AC_SUBST(extra_linker_plugin_flags)
1858
1859
1860 # By default, C and C++ are the only stage 1 languages.
1861 stage1_languages=,c,
1862
1863 # Target libraries that we bootstrap.
1864 bootstrap_target_libs=,target-libgcc,
1865
1866 # Figure out what language subdirectories are present.
1867 # Look if the user specified --enable-languages="..."; if not, use
1868 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1869 # go away some day.
1870 # NB:  embedded tabs in this IF block -- do not untabify
1871 if test -d ${srcdir}/gcc; then
1872   if test x"${enable_languages+set}" != xset; then
1873     if test x"${LANGUAGES+set}" = xset; then
1874       enable_languages="${LANGUAGES}"
1875         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1876     else
1877       enable_languages=all
1878     fi
1879   else
1880     if test x"${enable_languages}" = x ||
1881        test x"${enable_languages}" = xyes;
1882        then
1883       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1884       exit 1
1885     fi
1886   fi
1887   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1888
1889   # 'f95' is the old name for the 'fortran' language. We issue a warning
1890   # and make the substitution.
1891   case ,${enable_languages}, in
1892     *,f95,*)
1893       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1894       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1895       ;;
1896   esac
1897
1898   # If bootstrapping, C++ must be enabled.
1899   case ",$enable_languages,:$enable_bootstrap" in
1900     *,c++,*:*) ;;
1901     *:yes)
1902       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1903         enable_languages="${enable_languages},c++"
1904       else
1905         AC_MSG_ERROR([bootstrapping requires c++ sources])
1906       fi
1907       ;;
1908   esac
1909
1910   # First scan to see if an enabled language requires some other language.
1911   # We assume that a given config-lang.in will list all the language
1912   # front ends it requires, even if some are required indirectly.
1913   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1914     case ${lang_frag} in
1915       ..) ;;
1916       # The odd quoting in the next line works around
1917       # an apparent bug in bash 1.12 on linux.
1918       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1919       *)
1920         # From the config-lang.in, get $language, $lang_requires, and
1921         # $lang_requires_boot_languages.
1922         language=
1923         lang_requires=
1924         lang_requires_boot_languages=
1925         . ${lang_frag}
1926         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1927           case ,${enable_languages}, in
1928             *,$other,*) ;;
1929             *,all,*) ;;
1930             *,$language,*)
1931               echo " \`$other' language required by \`$language'; enabling" 1>&2
1932               enable_languages="${enable_languages},${other}"
1933               ;;
1934           esac
1935         done
1936         for other in ${lang_requires_boot_languages} ; do
1937           if test "$other" != "c"; then
1938             case ,${enable_stage1_languages}, in
1939               *,$other,*) ;;
1940               *,all,*) ;;
1941               *)
1942                 case ,${enable_languages}, in
1943                   *,$language,*)
1944                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1945                     enable_stage1_languages="$enable_stage1_languages,${other}"
1946                     ;;
1947                 esac
1948                 ;;
1949             esac
1950           fi
1951         done
1952         ;;
1953     esac
1954   done
1955
1956   new_enable_languages=,c,
1957
1958   # If LTO is enabled, add the LTO front end.
1959   if test "$enable_lto" = "yes" ; then
1960     case ,${enable_languages}, in
1961       *,lto,*) ;;
1962       *) enable_languages="${enable_languages},lto" ;;
1963     esac
1964     if test "${build_lto_plugin}" = "yes" ; then
1965       configdirs="$configdirs lto-plugin"
1966     fi
1967   fi
1968
1969   # If we're building an offloading compiler, add the LTO front end.
1970   if test x"$enable_as_accelerator_for" != x ; then
1971     case ,${enable_languages}, in
1972       *,lto,*) ;;
1973       *) enable_languages="${enable_languages},lto" ;;
1974     esac
1975   fi
1976
1977   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1978   potential_languages=,c,
1979
1980   enabled_target_libs=
1981   disabled_target_libs=
1982
1983   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1984     case ${lang_frag} in
1985       ..) ;;
1986       # The odd quoting in the next line works around
1987       # an apparent bug in bash 1.12 on linux.
1988       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1989       *)
1990         # From the config-lang.in, get $language, $target_libs,
1991         # $lang_dirs, $boot_language, and $build_by_default
1992         language=
1993         target_libs=
1994         lang_dirs=
1995         subdir_requires=
1996         boot_language=no
1997         build_by_default=yes
1998         . ${lang_frag}
1999         if test x${language} = x; then
2000           echo "${lang_frag} doesn't set \$language." 1>&2
2001           exit 1
2002         fi
2003
2004         if test "$language" = "c++"; then
2005           boot_language=yes
2006         fi
2007
2008         add_this_lang=no
2009         case ,${enable_languages}, in
2010           *,${language},*)
2011             # Language was explicitly selected; include it
2012             # unless it is C, which is enabled by default.
2013             if test "$language" != "c"; then
2014               add_this_lang=yes
2015             fi
2016             ;;
2017           *,all,*)
2018             # 'all' was selected, select it if it is a default language
2019             if test "$language" != "c"; then
2020               add_this_lang=${build_by_default}
2021             fi
2022             ;;
2023         esac
2024
2025         # Disable languages that need other directories if these aren't available.
2026         for i in $subdir_requires; do
2027           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2028           case ,${enable_languages}, in
2029             *,${language},*)
2030               # Specifically requested language; tell them.
2031               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2032               ;;
2033             *)
2034               # Silently disable.
2035               add_this_lang=unsupported
2036               ;;
2037           esac
2038         done
2039
2040         # Disable Ada if no preexisting GNAT is available.
2041         case ,${enable_languages},:${language}:${have_gnat} in
2042           *,${language},*:ada:no)
2043             # Specifically requested language; tell them.
2044             AC_MSG_ERROR([GNAT is required to build $language])
2045             ;;
2046           *:ada:no)
2047             # Silently disable.
2048             add_this_lang=unsupported
2049             ;;
2050         esac
2051
2052         # Disable a language that is unsupported by the target.
2053         case " $unsupported_languages " in
2054           *" $language "*)
2055             add_this_lang=unsupported
2056             ;;
2057         esac
2058
2059         case $add_this_lang in
2060           unsupported)
2061             # Remove language-dependent dirs.
2062             disabled_target_libs="$disabled_target_libs $target_libs"
2063             noconfigdirs="$noconfigdirs $lang_dirs"
2064             ;;
2065           no)
2066             # Remove language-dependent dirs; still show language as supported.
2067             disabled_target_libs="$disabled_target_libs $target_libs"
2068             noconfigdirs="$noconfigdirs $lang_dirs"
2069             potential_languages="${potential_languages}${language},"
2070             ;;
2071           yes)
2072             new_enable_languages="${new_enable_languages}${language},"
2073             potential_languages="${potential_languages}${language},"
2074             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2075             enabled_target_libs="$enabled_target_libs $target_libs"
2076             case "${boot_language}:,$enable_stage1_languages," in
2077               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2078                 # Add to (comma-separated) list of stage 1 languages.
2079                 case ",$stage1_languages," in
2080                   *,$language,* | ,yes, | ,all,) ;;
2081                   *) stage1_languages="${stage1_languages}${language}," ;;
2082                 esac
2083                 # We need to bootstrap any supporting libraries.
2084                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2085                 ;;
2086             esac
2087             ;;
2088         esac
2089         ;;
2090     esac
2091   done
2092
2093   # Add target libraries which are only needed for disabled languages
2094   # to noconfigdirs.
2095   if test -n "$disabled_target_libs"; then
2096     for dir in $disabled_target_libs; do
2097       case " $enabled_target_libs " in
2098       *" ${dir} "*) ;;
2099       *) noconfigdirs="$noconfigdirs $dir" ;;
2100       esac
2101     done
2102   fi
2103
2104   AC_ARG_ENABLE(stage1-languages,
2105   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2106                   [choose additional languages to build during
2107                   stage1.  Mostly useful for compiler development])],
2108   [case ,${enable_stage1_languages}, in
2109     ,no,|,,)
2110       # Set it to something that will have no effect in the loop below
2111       enable_stage1_languages=c ;;
2112     ,yes,)
2113       enable_stage1_languages=`echo $new_enable_languages | \
2114         sed -e "s/^,//" -e "s/,$//" ` ;;
2115     *,all,*)
2116       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2117         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2118   esac
2119
2120   # Add "good" languages from enable_stage1_languages to stage1_languages,
2121   # while "bad" languages go in missing_languages.  Leave no duplicates.
2122   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2123     case $potential_languages in
2124       *,$i,*)
2125         case $stage1_languages in
2126           *,$i,*) ;;
2127           *) stage1_languages="$stage1_languages$i," ;;
2128         esac ;;
2129       *)
2130         case $missing_languages in
2131           *,$i,*) ;;
2132           *) missing_languages="$missing_languages$i," ;;
2133         esac ;;
2134      esac
2135   done])
2136
2137   # Remove leading/trailing commas that were added for simplicity
2138   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2139   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2140   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2141   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2142
2143   if test "x$missing_languages" != x; then
2144     AC_MSG_ERROR([
2145 The following requested languages could not be built: ${missing_languages}
2146 Supported languages are: ${potential_languages}])
2147   fi
2148   if test "x$new_enable_languages" != "x$enable_languages"; then
2149     echo The following languages will be built: ${new_enable_languages}
2150     enable_languages="$new_enable_languages"
2151   fi
2152
2153   AC_SUBST(stage1_languages)
2154   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2155 fi
2156
2157 # Handle --disable-<component> generically.
2158 for dir in $configdirs $build_configdirs $target_configdirs ; do
2159   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2160   varname=`echo $dirname | sed -e s/+/_/g`
2161   if eval test x\${enable_${varname}} "=" xno ; then
2162     noconfigdirs="$noconfigdirs $dir"
2163   fi
2164 done
2165
2166 # Check for Boehm's garbage collector
2167 AC_ARG_ENABLE(objc-gc,
2168 [AS_HELP_STRING([--enable-objc-gc],
2169                 [enable use of Boehm's garbage collector with the
2170                  GNU Objective-C runtime])],
2171 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2172   *,objc,*:*:yes:*target-boehm-gc*)
2173     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2174     ;;
2175 esac])
2176
2177 # Make sure we only build Boehm's garbage collector if required.
2178 case ,${enable_languages},:${enable_objc_gc} in
2179   *,objc,*:yes)
2180     # Keep target-boehm-gc if requested for Objective-C.
2181     ;;
2182   *)
2183     # Otherwise remove target-boehm-gc depending on target-libjava.
2184     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2185       noconfigdirs="$noconfigdirs target-boehm-gc"
2186     fi
2187     ;;
2188 esac
2189
2190 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2191 case ,${enable_languages}, in
2192   *,c++,*)
2193     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2194     case "${noconfigdirs}" in
2195       *target-libstdc++-v3*)
2196         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2197         ;;
2198       *) ;;
2199     esac
2200     ;;
2201   *)
2202     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2203     ;;
2204 esac
2205
2206 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2207 # $build_configdirs and $target_configdirs.
2208 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2209
2210 notsupp=""
2211 for dir in . $skipdirs $noconfigdirs ; do
2212   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2213   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2214     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2215     if test -r $srcdir/$dirname/configure ; then
2216       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2217         true
2218       else
2219         notsupp="$notsupp $dir"
2220       fi
2221     fi
2222   fi
2223   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2224     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2225     if test -r $srcdir/$dirname/configure ; then
2226       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2227         true
2228       else
2229         notsupp="$notsupp $dir"
2230       fi
2231     fi
2232   fi
2233   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2234     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2235     if test -r $srcdir/$dirname/configure ; then
2236       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2237         true
2238       else
2239         notsupp="$notsupp $dir"
2240       fi
2241     fi
2242   fi
2243 done
2244
2245 # Quietly strip out all directories which aren't configurable in this tree.
2246 # This relies on all configurable subdirectories being autoconfiscated, which
2247 # is now the case.
2248 build_configdirs_all="$build_configdirs"
2249 build_configdirs=
2250 for i in ${build_configdirs_all} ; do
2251   j=`echo $i | sed -e s/build-//g`
2252   if test -f ${srcdir}/$j/configure ; then
2253     build_configdirs="${build_configdirs} $i"
2254   fi
2255 done
2256
2257 configdirs_all="$configdirs"
2258 configdirs=
2259 for i in ${configdirs_all} ; do
2260   if test -f ${srcdir}/$i/configure ; then
2261     configdirs="${configdirs} $i"
2262   fi
2263 done
2264
2265 target_configdirs_all="$target_configdirs"
2266 target_configdirs=
2267 for i in ${target_configdirs_all} ; do
2268   j=`echo $i | sed -e s/target-//g`
2269   if test -f ${srcdir}/$j/configure ; then
2270     target_configdirs="${target_configdirs} $i"
2271   fi
2272 done
2273
2274 # Exclude target-zlib if target-libjava isn't built.
2275 case ${target_configdirs} in
2276 *target-libjava*)
2277   ;;
2278 *)
2279   target_configdirs="`echo ${target_configdirs} | sed -e 's/target-zlib//'`"
2280   ;;
2281 esac
2282
2283 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2284 # so we have to add it after the preceding checks.
2285 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2286 then
2287   case " $configdirs " in
2288     *" libiberty "*)
2289       # If we can build libiberty, we can also build libiberty-linker-plugin.
2290       configdirs="$configdirs libiberty-linker-plugin"
2291       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2292         --with-libiberty=../libiberty-linker-plugin";;
2293     *)
2294       AC_MSG_ERROR([libiberty missing]);;
2295   esac
2296 fi
2297
2298 # Sometimes we have special requirements for the host libiberty.
2299 extra_host_libiberty_configure_flags=
2300 extra_host_zlib_configure_flags=
2301 case " $configdirs " in
2302   *" lto-plugin "* | *" libcc1 "*)
2303     # When these are to be built as shared libraries, the same applies to
2304     # libiberty.
2305     extra_host_libiberty_configure_flags=--enable-shared
2306     ;;
2307   *" bfd "*)
2308     # When bfd is to be built as a shared library, the same applies to
2309     # zlib.
2310     if test "$enable_shared" = "yes"; then
2311       extra_host_zlib_configure_flags=--enable-host-shared
2312     fi
2313     ;;
2314 esac
2315 AC_SUBST(extra_host_libiberty_configure_flags)
2316 AC_SUBST(extra_host_zlib_configure_flags)
2317
2318 # Produce a warning message for the subdirs we can't configure.
2319 # This isn't especially interesting in the Cygnus tree, but in the individual
2320 # FSF releases, it's important to let people know when their machine isn't
2321 # supported by the one or two programs in a package.
2322
2323 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2324   # If $appdirs is non-empty, at least one of those directories must still
2325   # be configured, or we error out.  (E.g., if the gas release supports a
2326   # specified target in some subdirs but not the gas subdir, we shouldn't
2327   # pretend that all is well.)
2328   if test -n "$appdirs" ; then
2329     for dir in $appdirs ; do
2330       if test -r $dir/Makefile.in ; then
2331         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2332           appdirs=""
2333           break
2334         fi
2335         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2336           appdirs=""
2337           break
2338         fi
2339       fi
2340     done
2341     if test -n "$appdirs" ; then
2342       echo "*** This configuration is not supported by this package." 1>&2
2343       exit 1
2344     fi
2345   fi
2346   # Okay, some application will build, or we don't care to check.  Still
2347   # notify of subdirs not getting built.
2348   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2349   echo "    ${notsupp}" 1>&2
2350   echo "    (Any other directories should still work fine.)" 1>&2
2351 fi
2352
2353 case "$host" in
2354   *msdosdjgpp*)
2355     enable_gdbtk=no ;;
2356 esac
2357
2358 # To find our prefix, in gcc_cv_tool_prefix.
2359 ACX_TOOL_DIRS
2360
2361 copy_dirs=
2362
2363 AC_ARG_WITH([build-sysroot],
2364   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2365                   [use sysroot as the system root during the build])],
2366   [if test x"$withval" != x ; then
2367      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2368    fi],
2369   [SYSROOT_CFLAGS_FOR_TARGET=])
2370 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2371
2372 AC_ARG_WITH([debug-prefix-map],
2373   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2374                   [map A to B, C to D ... in debug information])],
2375   [if test x"$withval" != x; then
2376      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2377      for debug_map in $withval; do
2378        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2379      done
2380    fi],
2381   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2382 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2383
2384 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2385 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2386 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2387 # We want to ensure that TARGET libraries (which we know are built with
2388 # gcc) are built with "-O2 -g", so include those options when setting
2389 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2390 if test "x$CFLAGS_FOR_TARGET" = x; then
2391   if test "x${is_cross_compiler}" = xyes; then
2392     CFLAGS_FOR_TARGET="-g -O2"
2393   else
2394     CFLAGS_FOR_TARGET=$CFLAGS
2395     case " $CFLAGS " in
2396       *" -O2 "*) ;;
2397       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2398     esac
2399     case " $CFLAGS " in
2400       *" -g "* | *" -g3 "*) ;;
2401       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2402     esac
2403   fi
2404 fi
2405 AC_SUBST(CFLAGS_FOR_TARGET)
2406
2407 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2408   if test "x${is_cross_compiler}" = xyes; then
2409     CXXFLAGS_FOR_TARGET="-g -O2"
2410   else
2411     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2412     case " $CXXFLAGS " in
2413       *" -O2 "*) ;;
2414       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2415     esac
2416     case " $CXXFLAGS " in
2417       *" -g "* | *" -g3 "*) ;;
2418       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2419     esac
2420   fi
2421 fi
2422 AC_SUBST(CXXFLAGS_FOR_TARGET)
2423
2424 AC_SUBST(LDFLAGS_FOR_TARGET)
2425
2426 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2427 # the named directory are copied to $(tooldir)/sys-include.
2428 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2429   if test x${is_cross_compiler} = xno ; then
2430     echo 1>&2 '***' --with-headers is only supported when cross compiling
2431     exit 1
2432   fi
2433   if test x"${with_headers}" != xyes ; then
2434     x=${gcc_cv_tool_prefix}
2435     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2436   fi
2437 fi
2438
2439 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2440 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2441 # are permitted.
2442 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2443   if test x${is_cross_compiler} = xno ; then
2444     echo 1>&2 '***' --with-libs is only supported when cross compiling
2445     exit 1
2446   fi
2447   if test x"${with_libs}" != xyes ; then
2448     # Copy the libraries in reverse order, so that files in the first named
2449     # library override files in subsequent libraries.
2450     x=${gcc_cv_tool_prefix}
2451     for l in ${with_libs}; do
2452       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2453     done
2454   fi
2455 fi
2456
2457 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2458 #
2459 # This is done by determining whether or not the appropriate directory
2460 # is available, and by checking whether or not specific configurations
2461 # have requested that this magic not happen.
2462 #
2463 # The command line options always override the explicit settings in
2464 # configure.ac, and the settings in configure.ac override this magic.
2465 #
2466 # If the default for a toolchain is to use GNU as and ld, and you don't
2467 # want to do that, then you should use the --without-gnu-as and
2468 # --without-gnu-ld options for the configure script.  Similarly, if
2469 # the default is to use the included zlib and you don't want to do that,
2470 # you should use the --with-system-zlib option for the configure script.
2471
2472 if test x${use_gnu_as} = x &&
2473    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2474   with_gnu_as=yes
2475   extra_host_args="$extra_host_args --with-gnu-as"
2476 fi
2477
2478 if test x${use_gnu_ld} = x &&
2479    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2480   with_gnu_ld=yes
2481   extra_host_args="$extra_host_args --with-gnu-ld"
2482 fi
2483
2484 if test x${use_included_zlib} = x &&
2485    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2486   :
2487 else
2488   with_system_zlib=yes
2489   extra_host_args="$extra_host_args --with-system-zlib"
2490 fi
2491
2492 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2493 # can detect this case.
2494
2495 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2496   with_newlib=yes
2497   extra_host_args="$extra_host_args --with-newlib"
2498 fi
2499
2500 # Handle ${copy_dirs}
2501 set fnord ${copy_dirs}
2502 shift
2503 while test $# != 0 ; do
2504   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2505     :
2506   else
2507     echo Copying $1 to $2
2508
2509     # Use the install script to create the directory and all required
2510     # parent directories.
2511     if test -d $2 ; then
2512       :
2513     else
2514       echo >config.temp
2515       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2516     fi
2517
2518     # Copy the directory, assuming we have tar.
2519     # FIXME: Should we use B in the second tar?  Not all systems support it.
2520     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2521
2522     # It is the responsibility of the user to correctly adjust all
2523     # symlinks.  If somebody can figure out how to handle them correctly
2524     # here, feel free to add the code.
2525
2526     echo $1 > $2/COPIED
2527   fi
2528   shift; shift
2529 done
2530
2531 # Determine a target-dependent exec_prefix that the installed
2532 # gcc will search in.  Keep this list sorted by triplet, with
2533 # the *-*-osname triplets last.
2534 md_exec_prefix=
2535 case "${target}" in
2536   i[[34567]]86-pc-msdosdjgpp*)
2537     md_exec_prefix=/dev/env/DJDIR/bin
2538     ;;
2539   *-*-hpux* | \
2540   *-*-nto-qnx* | \
2541   *-*-solaris2*)
2542     md_exec_prefix=/usr/ccs/bin
2543     ;;
2544 esac
2545
2546 extra_arflags_for_target=
2547 extra_nmflags_for_target=
2548 extra_ranlibflags_for_target=
2549 target_makefile_frag=/dev/null
2550 case "${target}" in
2551   spu-*-*)
2552     target_makefile_frag="config/mt-spu"
2553     ;;
2554   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2555     target_makefile_frag="config/mt-sde"
2556     ;;
2557   mipsisa*-*-elfoabi*)
2558     target_makefile_frag="config/mt-mips-elfoabi"
2559     ;;
2560   mips*-*-*linux* | mips*-*-gnu*)
2561     target_makefile_frag="config/mt-mips-gnu"
2562     ;;
2563   nios2-*-elf*)
2564     target_makefile_frag="config/mt-nios2-elf"
2565     ;;
2566   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2567     target_makefile_frag="config/mt-gnu"
2568     ;;
2569   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2570     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2571     # commands to handle both 32-bit and 64-bit objects.  These flags are
2572     # harmless if we're using GNU nm or ar.
2573     extra_arflags_for_target=" -X32_64"
2574     extra_nmflags_for_target=" -B -X32_64"
2575     ;;
2576 esac
2577
2578 alphaieee_frag=/dev/null
2579 case $target in
2580   alpha*-*-*)
2581     # This just makes sure to use the -mieee option to build target libs.
2582     # This should probably be set individually by each library.
2583     alphaieee_frag="config/mt-alphaieee"
2584     ;;
2585 esac
2586
2587 # If --enable-target-optspace always use -Os instead of -O2 to build
2588 # the target libraries, similarly if it is not specified, use -Os
2589 # on selected platforms.
2590 ospace_frag=/dev/null
2591 case "${enable_target_optspace}:${target}" in
2592   yes:*)
2593     ospace_frag="config/mt-ospace"
2594     ;;
2595   :d30v-*)
2596     ospace_frag="config/mt-d30v"
2597     ;;
2598   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2599     ospace_frag="config/mt-ospace"
2600     ;;
2601   no:* | :*)
2602     ;;
2603   *)
2604     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2605     ;;
2606 esac
2607
2608 # Some systems (e.g., one of the i386-aix systems the gas testers are
2609 # using) don't handle "\$" correctly, so don't use it here.
2610 tooldir='${exec_prefix}'/${target_noncanonical}
2611 build_tooldir=${tooldir}
2612
2613 # Create a .gdbinit file which runs the one in srcdir
2614 # and tells GDB to look there for source files.
2615
2616 if test -r ${srcdir}/.gdbinit ; then
2617   case ${srcdir} in
2618     .) ;;
2619     *) cat > ./.gdbinit <<EOF
2620 # ${NO_EDIT}
2621 dir ${srcdir}
2622 dir .
2623 source ${srcdir}/.gdbinit
2624 EOF
2625     ;;
2626   esac
2627 fi
2628
2629 # Make sure that the compiler is able to generate an executable.  If it
2630 # can't, we are probably in trouble.  We don't care whether we can run the
2631 # executable--we might be using a cross compiler--we only care whether it
2632 # can be created.  At this point the main configure script has set CC.
2633 we_are_ok=no
2634 echo "int main () { return 0; }" > conftest.c
2635 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2636 if test $? = 0 ; then
2637   if test -s conftest || test -s conftest.exe ; then
2638     we_are_ok=yes
2639   fi
2640 fi
2641 case $we_are_ok in
2642   no)
2643     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2644     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2645     rm -f conftest*
2646     exit 1
2647     ;;
2648 esac
2649 rm -f conftest*
2650
2651 # Decide which environment variable is used to find dynamic libraries.
2652 case "${host}" in
2653   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2654   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2655   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2656   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2657 esac
2658
2659 # On systems where the dynamic library environment variable is PATH,
2660 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2661 # built executables to PATH.
2662 if test "$RPATH_ENVVAR" = PATH; then
2663   GCC_SHLIB_SUBDIR=/shlib
2664 else
2665   GCC_SHLIB_SUBDIR=
2666 fi
2667
2668 # Adjust the toplevel makefile according to whether bootstrap was selected.
2669 case $enable_bootstrap in
2670   yes)
2671     bootstrap_suffix=bootstrap
2672     BUILD_CONFIG=bootstrap-debug
2673     ;;
2674   no)
2675     bootstrap_suffix=no-bootstrap
2676     BUILD_CONFIG=
2677     ;;
2678 esac
2679
2680 AC_MSG_CHECKING(for default BUILD_CONFIG)
2681
2682 AC_ARG_WITH([build-config],
2683   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2684                   [use config/NAME.mk build configuration])],
2685   [case $with_build_config in
2686    yes) with_build_config= ;;
2687    no) with_build_config= BUILD_CONFIG= ;;
2688    esac])
2689
2690 if test "x${with_build_config}" != x; then
2691   BUILD_CONFIG=$with_build_config
2692 else
2693   case $BUILD_CONFIG in
2694   bootstrap-debug)
2695     if echo "int f (void) { return 0; }" > conftest.c &&
2696        ${CC} -c conftest.c &&
2697        mv conftest.o conftest.o.g0 &&
2698        ${CC} -c -g conftest.c &&
2699        mv conftest.o conftest.o.g &&
2700        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2701       :
2702     else
2703       BUILD_CONFIG=
2704     fi
2705     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2706     ;;
2707   esac
2708 fi
2709 AC_MSG_RESULT($BUILD_CONFIG)
2710 AC_SUBST(BUILD_CONFIG)
2711
2712 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2713 AC_MSG_CHECKING([for --enable-vtable-verify])
2714 AC_ARG_ENABLE(vtable-verify,
2715 [AS_HELP_STRING([--enable-vtable-verify],
2716                 [Enable vtable verification feature])],
2717 [case "$enableval" in
2718  yes) enable_vtable_verify=yes ;;
2719  no)  enable_vtable_verify=no ;;
2720  *)   enable_vtable_verify=no;;
2721  esac],
2722 [enable_vtable_verify=no])
2723 AC_MSG_RESULT($enable_vtable_verify)
2724
2725 # Record target_configdirs and the configure arguments for target and
2726 # build configuration in Makefile.
2727 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2728 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2729 bootstrap_fixincludes=no
2730
2731 # If we are building libgomp, bootstrap it.
2732 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2733   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2734 fi
2735
2736 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2737 # or bootstrap-ubsan, bootstrap it.
2738 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2739   case "$BUILD_CONFIG" in
2740     *bootstrap-asan* | *bootstrap-ubsan* )
2741       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2742       bootstrap_fixincludes=yes
2743       ;;
2744   esac
2745 fi
2746
2747 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2748 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2749    test "$enable_vtable_verify" != no; then
2750   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2751 fi
2752
2753 # If we are building libmpx, bootstrap it.
2754 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2755   bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2756 fi
2757
2758 # Determine whether gdb needs tk/tcl or not.
2759 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2760 # and in that case we want gdb to be built without tk.  Ugh!
2761 # In fact I believe gdb is the *only* package directly dependent on tk,
2762 # so we should be able to put the 'maybe's in unconditionally and
2763 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2764 # 100% sure that that's safe though.
2765
2766 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2767 case "$enable_gdbtk" in
2768   no)
2769     GDB_TK="" ;;
2770   yes)
2771     GDB_TK="${gdb_tk}" ;;
2772   *)
2773     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2774     # distro.  Eventually someone will fix this and move Insight, nee
2775     # gdbtk to a separate directory.
2776     if test -d ${srcdir}/gdb/gdbtk ; then
2777       GDB_TK="${gdb_tk}"
2778     else
2779       GDB_TK=""
2780     fi
2781     ;;
2782 esac
2783 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2784 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2785
2786 # Strip out unwanted targets.
2787
2788 # While at that, we remove Makefiles if we were started for recursive
2789 # configuration, so that the top-level Makefile reconfigures them,
2790 # like we used to do when configure itself was recursive.
2791
2792 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2793 # but now we're fixing up the Makefile ourselves with the additional
2794 # commands passed to AC_CONFIG_FILES.  Use separate variables
2795 # extrasub-{build,host,target} not because there is any reason to split
2796 # the substitutions up that way, but only to remain below the limit of
2797 # 99 commands in a script, for HP-UX sed.
2798 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2799
2800 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2801   yes:yes:*\ gold\ *:*,c++,*) ;;
2802   yes:yes:*\ gold\ *:*)
2803     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2804     ;;
2805 esac
2806
2807 extrasub_build=
2808 for module in ${build_configdirs} ; do
2809   if test -z "${no_recursion}" \
2810      && test -f ${build_subdir}/${module}/Makefile; then
2811     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2812     rm -f ${build_subdir}/${module}/Makefile
2813   fi
2814   extrasub_build="$extrasub_build
2815 /^@if build-$module\$/d
2816 /^@endif build-$module\$/d
2817 /^@if build-$module-$bootstrap_suffix\$/d
2818 /^@endif build-$module-$bootstrap_suffix\$/d"
2819 done
2820 extrasub_host=
2821 for module in ${configdirs} ; do
2822   if test -z "${no_recursion}"; then
2823     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2824       if test -f ${file}; then
2825         echo 1>&2 "*** removing ${file} to force reconfigure"
2826         rm -f ${file}
2827       fi
2828     done
2829   fi
2830   case ${module},${bootstrap_fixincludes} in
2831     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2832     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2833   esac
2834   extrasub_host="$extrasub_host
2835 /^@if $module\$/d
2836 /^@endif $module\$/d
2837 /^@if $module-$host_bootstrap_suffix\$/d
2838 /^@endif $module-$host_bootstrap_suffix\$/d"
2839 done
2840 extrasub_target=
2841 for module in ${target_configdirs} ; do
2842   if test -z "${no_recursion}" \
2843      && test -f ${target_subdir}/${module}/Makefile; then
2844     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2845     rm -f ${target_subdir}/${module}/Makefile
2846   fi
2847
2848   # We only bootstrap target libraries listed in bootstrap_target_libs.
2849   case $bootstrap_target_libs in
2850     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2851     *) target_bootstrap_suffix=no-bootstrap ;;
2852   esac
2853
2854   extrasub_target="$extrasub_target
2855 /^@if target-$module\$/d
2856 /^@endif target-$module\$/d
2857 /^@if target-$module-$target_bootstrap_suffix\$/d
2858 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2859 done
2860
2861 # Do the final fixup along with target modules.
2862 extrasub_target="$extrasub_target
2863 /^@if /,/^@endif /d"
2864
2865 # Create the serialization dependencies.  This uses a temporary file.
2866
2867 AC_ARG_ENABLE([serial-configure],
2868 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2869                 [force sequential configuration of
2870                  sub-packages for the host, target or build
2871                  machine, or all sub-packages])])
2872
2873 case ${enable_serial_configure} in
2874   yes)
2875     enable_serial_build_configure=yes
2876     enable_serial_host_configure=yes
2877     enable_serial_target_configure=yes
2878     ;;
2879 esac
2880
2881 # These force 'configure's to be done one at a time, to avoid problems
2882 # with contention over a shared config.cache.
2883 rm -f serdep.tmp
2884 echo '# serdep.tmp' > serdep.tmp
2885 olditem=
2886 test "x${enable_serial_build_configure}" = xyes &&
2887 for item in ${build_configdirs} ; do
2888   case ${olditem} in
2889     "") ;;
2890     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2891   esac
2892   olditem=${item}
2893 done
2894 olditem=
2895 test "x${enable_serial_host_configure}" = xyes &&
2896 for item in ${configdirs} ; do
2897   case ${olditem} in
2898     "") ;;
2899     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2900   esac
2901   olditem=${item}
2902 done
2903 olditem=
2904 test "x${enable_serial_target_configure}" = xyes &&
2905 for item in ${target_configdirs} ; do
2906   case ${olditem} in
2907     "") ;;
2908     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2909   esac
2910   olditem=${item}
2911 done
2912 serialization_dependencies=serdep.tmp
2913 AC_SUBST_FILE(serialization_dependencies)
2914
2915 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2916 # target, nonopt, and variable assignments.  These are the ones we
2917 # might not want to pass down to subconfigures.  The exception being
2918 # --cache-file=/dev/null, which is used to turn off the use of cache
2919 # files altogether, and which should be passed on to subconfigures.
2920 # Also strip program-prefix, program-suffix, and program-transform-name,
2921 # so that we can pass down a consistent program-transform-name.
2922 baseargs=
2923 tbaseargs=
2924 keep_next=no
2925 skip_next=no
2926 eval "set -- $ac_configure_args"
2927 for ac_arg
2928 do
2929   if test X"$skip_next" = X"yes"; then
2930     skip_next=no
2931     continue
2932   fi
2933   if test X"$keep_next" = X"yes"; then
2934     case $ac_arg in
2935       *\'*)
2936         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2937     esac
2938     baseargs="$baseargs '$ac_arg'"
2939     tbaseargs="$tbaseargs '$ac_arg'"
2940     keep_next=no
2941     continue
2942   fi
2943
2944   # Handle separated arguments.  Based on the logic generated by
2945   # autoconf 2.59.
2946   case $ac_arg in
2947     *=* | --config-cache | -C | -disable-* | --disable-* \
2948       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2949       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2950       | -with-* | --with-* | -without-* | --without-* | --x)
2951       separate_arg=no
2952       ;;
2953     -*)
2954       separate_arg=yes
2955       ;;
2956     *)
2957       separate_arg=no
2958       ;;
2959   esac
2960
2961   skip_targ=no
2962   case $ac_arg in
2963 changequote(,)
2964   --with-* | --without-*)
2965     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2966
2967     case $libopt in
2968     *[-_]include)
2969       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2970       ;;
2971     *[-_]lib)
2972       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2973       ;;
2974     *)
2975       lib=$libopt
2976       ;;
2977     esac
2978 changequote([,])
2979
2980     case $lib in
2981     mpc | mpfr | gmp | isl)
2982       # If we're processing --with-$lib, --with-$lib-include or
2983       # --with-$lib-lib, for one of the libs above, and target is
2984       # different from host, don't pass the current argument to any
2985       # target library's configure.
2986       if test x$is_cross_compiler = xyes; then
2987         skip_targ=yes
2988       fi
2989       ;;
2990     esac
2991     ;;
2992   esac
2993
2994   case "$ac_arg" in
2995     --cache-file=/dev/null | \
2996     -cache-file=/dev/null )
2997       # Handled here to avoid the test to skip args below.
2998       baseargs="$baseargs '$ac_arg'"
2999       tbaseargs="$tbaseargs '$ac_arg'"
3000       # Assert: $separate_arg should always be no.
3001       keep_next=$separate_arg
3002       ;;
3003     --no*)
3004       continue
3005       ;;
3006     --c* | \
3007     --sr* | \
3008     --ho* | \
3009     --bu* | \
3010     --t* | \
3011     --program-* | \
3012     -cache_file* | \
3013     -srcdir* | \
3014     -host* | \
3015     -build* | \
3016     -target* | \
3017     -program-prefix* | \
3018     -program-suffix* | \
3019     -program-transform-name* )
3020       skip_next=$separate_arg
3021       continue
3022       ;;
3023     -*)
3024       # An option.  Add it.
3025       case $ac_arg in
3026         *\'*)
3027           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3028       esac
3029       baseargs="$baseargs '$ac_arg'"
3030       if test X"$skip_targ" = Xno; then
3031         tbaseargs="$tbaseargs '$ac_arg'"
3032       fi
3033       keep_next=$separate_arg
3034       ;;
3035     *)
3036       # Either a variable assignment, or a nonopt (triplet).  Don't
3037       # pass it down; let the Makefile handle this.
3038       continue
3039       ;;
3040   esac
3041 done
3042 # Remove the initial space we just introduced and, as these will be
3043 # expanded by make, quote '$'.
3044 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3045
3046 # Add in --program-transform-name, after --program-prefix and
3047 # --program-suffix have been applied to it.  Autoconf has already
3048 # doubled dollar signs and backslashes in program_transform_name; we want
3049 # the backslashes un-doubled, and then the entire thing wrapped in single
3050 # quotes, because this will be expanded first by make and then by the shell.
3051 # Also, because we want to override the logic in subdir configure scripts to
3052 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3053 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3054 ${program_transform_name}
3055 EOF_SED
3056 gcc_transform_name=`cat conftestsed.out`
3057 rm -f conftestsed.out
3058 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3059 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3060 if test "$silent" = yes; then
3061   baseargs="$baseargs --silent"
3062   tbaseargs="$tbaseargs --silent"
3063 fi
3064 baseargs="$baseargs --disable-option-checking"
3065 tbaseargs="$tbaseargs --disable-option-checking"
3066
3067 # Record and document user additions to sub configure arguments.
3068 AC_ARG_VAR([build_configargs],
3069            [additional configure arguments for build directories])
3070 AC_ARG_VAR([host_configargs],
3071            [additional configure arguments for host directories])
3072 AC_ARG_VAR([target_configargs],
3073            [additional configure arguments for target directories])
3074
3075 # For the build-side libraries, we just need to pretend we're native,
3076 # and not use the same cache file.  Multilibs are neither needed nor
3077 # desired.  We can't even use the same cache file for all build-side
3078 # libraries, as they're compiled differently; some with C, some with
3079 # C++ or with different feature-enabling options.
3080 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3081
3082 # For host modules, accept cache file option, or specification as blank.
3083 case "${cache_file}" in
3084 "") # empty
3085   cache_file_option="" ;;
3086 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3087   cache_file_option="--cache-file=${cache_file}" ;;
3088 *) # relative path
3089   cache_file_option="--cache-file=../${cache_file}" ;;
3090 esac
3091
3092 # Host dirs don't like to share a cache file either, horribly enough.
3093 # This seems to be due to autoconf 2.5x stupidity.
3094 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3095
3096 target_configargs="$target_configargs ${tbaseargs}"
3097
3098 # Passing a --with-cross-host argument lets the target libraries know
3099 # whether they are being built with a cross-compiler or being built
3100 # native.  However, it would be better to use other mechanisms to make the
3101 # sorts of decisions they want to make on this basis.  Please consider
3102 # this option to be deprecated.  FIXME.
3103 if test x${is_cross_compiler} = xyes ; then
3104   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3105 fi
3106
3107 # Special user-friendly check for native x86_64-linux build, if
3108 # multilib is not explicitly enabled.
3109 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3110   x86_64-*linux*:yes:$build:$build:)
3111     # Make sure we have a development environment that handles 32-bit
3112     dev64=no
3113     echo "int main () { return 0; }" > conftest.c
3114     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3115     if test $? = 0 ; then
3116       if test -s conftest || test -s conftest.exe ; then
3117         dev64=yes
3118       fi
3119     fi
3120     rm -f conftest*
3121     if test x${dev64} != xyes ; then
3122       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.])
3123     fi
3124     ;;
3125 esac
3126
3127 # Default to --enable-multilib.
3128 if test x${enable_multilib} = x ; then
3129   target_configargs="--enable-multilib ${target_configargs}"
3130 fi
3131
3132 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3133 # changed from the earlier setting of with_newlib.
3134 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3135   target_configargs="--with-newlib ${target_configargs}"
3136 fi
3137
3138 # Different target subdirs use different values of certain variables
3139 # (notably CXX).  Worse, multilibs use *lots* of different values.
3140 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3141 # it doesn't automatically accept command-line overrides of them.
3142 # This means it's not safe for target subdirs to share a cache file,
3143 # which is disgusting, but there you have it.  Hopefully this can be
3144 # fixed in future.  It's still worthwhile to use a cache file for each
3145 # directory.  I think.
3146
3147 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3148 # We need to pass --target, as newer autoconf's requires consistency
3149 # for target_alias and gcc doesn't manage it consistently.
3150 target_configargs="--cache-file=./config.cache ${target_configargs}"
3151
3152 FLAGS_FOR_TARGET=
3153 case " $target_configdirs " in
3154  *" newlib "*)
3155   case " $target_configargs " in
3156   *" --with-newlib "*)
3157    case "$target" in
3158     *-cygwin*)
3159       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3160       ;;
3161    esac
3162
3163    # If we're not building GCC, don't discard standard headers.
3164    if test -d ${srcdir}/gcc; then
3165      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3166
3167      if test "${build}" != "${host}"; then
3168        # On Canadian crosses, CC_FOR_TARGET will have already been set
3169        # by `configure', so we won't have an opportunity to add -Bgcc/
3170        # to it.  This is right: we don't want to search that directory
3171        # for binaries, but we want the header files in there, so add
3172        # them explicitly.
3173        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3174
3175        # Someone might think of using the pre-installed headers on
3176        # Canadian crosses, in case the installed compiler is not fully
3177        # compatible with the compiler being built.  In this case, it
3178        # would be better to flag an error than risking having
3179        # incompatible object files being constructed.  We can't
3180        # guarantee that an error will be flagged, but let's hope the
3181        # compiler will do it, when presented with incompatible header
3182        # files.
3183      fi
3184    fi
3185
3186    case "${target}-${is_cross_compiler}" in
3187    i[[3456789]]86-*-linux*-no)
3188       # Here host == target, so we don't need to build gcc,
3189       # so we don't want to discard standard headers.
3190       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3191       ;;
3192    *)
3193       # If we're building newlib, use its generic headers last, but search
3194       # for any libc-related directories first (so make it the last -B
3195       # switch).
3196       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3197
3198       # If we're building libgloss, find the startup file, simulator library
3199       # and linker script.
3200       case " $target_configdirs " in
3201         *" libgloss "*)
3202         # Look for startup file, simulator library and maybe linker script.
3203         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3204         # Look for libnosys.a in case the target needs it.
3205         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3206         # Most targets have the linker script in the source directory.
3207         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3208         ;;
3209       esac
3210       ;;
3211    esac
3212    ;;
3213   esac
3214   ;;
3215 esac
3216
3217 case "$target" in
3218   x86_64-*mingw* | *-w64-mingw*)
3219   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3220   # however, use a symlink named 'mingw' in ${prefix} .
3221     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3222     ;;
3223   *-mingw*)
3224   # MinGW can't be handled as Cygwin above since it does not use newlib.
3225     FLAGS_FOR_TARGET=$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'
3226     ;;
3227 esac
3228
3229 # Allow the user to override the flags for
3230 # our build compiler if desired.
3231 if test x"${build}" = x"${host}" ; then
3232   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3233   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3234   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3235 fi
3236
3237 # On Canadian crosses, we'll be searching the right directories for
3238 # the previously-installed cross compiler, so don't bother to add
3239 # flags for directories within the install tree of the compiler
3240 # being built; programs in there won't even run.
3241 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3242   # Search for pre-installed headers if nothing else fits.
3243   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3244 fi
3245
3246 if test "x${use_gnu_ld}" = x &&
3247    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3248   # Arrange for us to find uninstalled linker scripts.
3249   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3250 fi
3251
3252 # Search for other target-specific linker scripts and such.
3253 case "${target}" in
3254   mep*)
3255     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3256     ;;
3257 esac
3258
3259 # Makefile fragments.
3260 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3261 do
3262   eval fragval=\$$frag
3263   if test $fragval != /dev/null; then
3264     eval $frag=${srcdir}/$fragval
3265   fi
3266 done
3267 AC_SUBST_FILE(host_makefile_frag)
3268 AC_SUBST_FILE(target_makefile_frag)
3269 AC_SUBST_FILE(alphaieee_frag)
3270 AC_SUBST_FILE(ospace_frag)
3271
3272 # Miscellanea: directories, flags, etc.
3273 AC_SUBST(RPATH_ENVVAR)
3274 AC_SUBST(GCC_SHLIB_SUBDIR)
3275 AC_SUBST(tooldir)
3276 AC_SUBST(build_tooldir)
3277 AC_SUBST(CONFIGURE_GDB_TK)
3278 AC_SUBST(GDB_TK)
3279 AC_SUBST(INSTALL_GDB_TK)
3280
3281 # Build module lists & subconfigure args.
3282 AC_SUBST(build_configargs)
3283 AC_SUBST(build_configdirs)
3284
3285 # Host module lists & subconfigure args.
3286 AC_SUBST(host_configargs)
3287 AC_SUBST(configdirs)
3288 AC_SUBST(target_configdirs)
3289
3290 # Target module lists & subconfigure args.
3291 AC_SUBST(target_configargs)
3292
3293
3294 # Build tools.
3295 AC_SUBST(AR_FOR_BUILD)
3296 AC_SUBST(AS_FOR_BUILD)
3297 AC_SUBST(CC_FOR_BUILD)
3298 AC_SUBST(CFLAGS_FOR_BUILD)
3299 AC_SUBST(CXXFLAGS_FOR_BUILD)
3300 AC_SUBST(CXX_FOR_BUILD)
3301 AC_SUBST(DLLTOOL_FOR_BUILD)
3302 AC_SUBST(GCJ_FOR_BUILD)
3303 AC_SUBST(GFORTRAN_FOR_BUILD)
3304 AC_SUBST(GOC_FOR_BUILD)
3305 AC_SUBST(LDFLAGS_FOR_BUILD)
3306 AC_SUBST(LD_FOR_BUILD)
3307 AC_SUBST(NM_FOR_BUILD)
3308 AC_SUBST(RANLIB_FOR_BUILD)
3309 AC_SUBST(WINDMC_FOR_BUILD)
3310 AC_SUBST(WINDRES_FOR_BUILD)
3311
3312 # Generate default definitions for YACC, M4, LEX and other programs that run
3313 # on the build machine.  These are used if the Makefile can't locate these
3314 # programs in objdir.
3315 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3316
3317 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3318 case " $build_configdirs " in
3319   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3320 esac
3321
3322 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3323 case " $build_configdirs " in
3324   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3325 esac
3326
3327 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3328 case " $build_configdirs " in
3329   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3330 esac
3331
3332 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3333 case " $build_configdirs " in
3334   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3335   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3336 esac
3337
3338 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3339 case " $build_configdirs " in
3340   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3341 esac
3342
3343 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3344 case " $build_configdirs " in
3345   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3346   *)
3347 changequote(,)
3348     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3349     # higher, else we use the "missing" dummy.
3350     if ${MAKEINFO} --version \
3351        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3352       :
3353     else
3354       MAKEINFO="$MISSING makeinfo"
3355     fi
3356     ;;
3357 changequote([,])
3358 esac
3359
3360 # FIXME: expect and dejagnu may become build tools?
3361
3362 AC_CHECK_PROGS(EXPECT, expect, expect)
3363 case " $configdirs " in
3364   *" expect "*)
3365     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3366     ;;
3367 esac
3368
3369 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3370 case " $configdirs " in
3371   *" dejagnu "*)
3372     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3373     ;;
3374 esac
3375
3376
3377 # Host tools.
3378 NCN_STRICT_CHECK_TOOLS(AR, ar)
3379 NCN_STRICT_CHECK_TOOLS(AS, as)
3380 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3381 NCN_STRICT_CHECK_TOOLS(LD, ld)
3382 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3383 NCN_STRICT_CHECK_TOOLS(NM, nm)
3384 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3385 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3386 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3387 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3388 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3389 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3390 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3391 AC_SUBST(CC)
3392 AC_SUBST(CXX)
3393 AC_SUBST(CFLAGS)
3394 AC_SUBST(CXXFLAGS)
3395
3396 # Target tools.
3397 AC_ARG_WITH([build-time-tools],
3398   [AS_HELP_STRING([--with-build-time-tools=PATH],
3399                   [use given path to find target tools during the build])],
3400   [case x"$withval" in
3401      x/*) ;;
3402      *)
3403        with_build_time_tools=
3404        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3405        ;;
3406    esac],
3407   [with_build_time_tools=])
3408
3409 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3410 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3411 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3412 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3413 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3414 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3415
3416 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3417 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3418 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3419 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3420 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3421 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3422 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3423 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3424 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3425 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3426 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3427 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3428 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3429
3430 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3431
3432 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3433 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3434 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3435 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3436 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3437                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3438                 c++)
3439 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3440                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3441                 c++)
3442 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3443 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3444 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3445                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3446 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3447                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3448 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3449                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3450 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3451 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3452 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3453 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3454 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3455 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3456 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3457 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3458 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3459 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3460
3461 AC_SUBST(FLAGS_FOR_TARGET)
3462 AC_SUBST(RAW_CXX_FOR_TARGET)
3463
3464 # Certain tools may need extra flags.
3465 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3466 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3467 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3468
3469 # When building target libraries, except in a Canadian cross, we use
3470 # the same toolchain as the compiler we just built.
3471 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3472 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3473 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3474 if test $host = $build; then
3475   case " $configdirs " in
3476     *" gcc "*)
3477       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3478       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3479       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3480       ;;
3481   esac
3482 fi
3483
3484 AC_SUBST(COMPILER_AS_FOR_TARGET)
3485 AC_SUBST(COMPILER_LD_FOR_TARGET)
3486 AC_SUBST(COMPILER_NM_FOR_TARGET)
3487
3488 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3489 AC_ARG_ENABLE(maintainer-mode,
3490 [AS_HELP_STRING([--enable-maintainer-mode],
3491                 [enable make rules and dependencies not useful
3492                  (and sometimes confusing) to the casual installer])],
3493       USE_MAINTAINER_MODE=$enableval,
3494       USE_MAINTAINER_MODE=no)
3495 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3496 AC_SUBST(MAINTAINER_MODE_TRUE)
3497 AC_SUBST(MAINTAINER_MODE_FALSE)
3498 if test "$USE_MAINTAINER_MODE" = yes; then
3499   MAINTAINER_MODE_TRUE=
3500   MAINTAINER_MODE_FALSE='#'
3501 else
3502   MAINTAINER_MODE_TRUE='#'
3503   MAINTAINER_MODE_FALSE=
3504 fi
3505 MAINT=$MAINTAINER_MODE_TRUE
3506 AC_SUBST(MAINT)dnl
3507
3508 # ---------------------
3509 # GCC bootstrap support
3510 # ---------------------
3511
3512 # Stage specific cflags for build.
3513 stage1_cflags="-g"
3514 case $build in
3515   vax-*-*)
3516     case ${GCC} in
3517       yes) stage1_cflags="-g -Wa,-J" ;;
3518       *) stage1_cflags="-g -J" ;;
3519     esac ;;
3520 esac
3521
3522 AC_SUBST(stage1_cflags)
3523
3524 # Enable --enable-checking in stage1 of the compiler.
3525 AC_ARG_ENABLE(stage1-checking,
3526 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3527                 [choose additional checking for stage1 of the compiler])],
3528 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3529 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3530   # For --disable-checking or implicit --enable-checking=release, avoid
3531   # setting --enable-checking=gc in the default stage1 checking for LTO
3532   # bootstraps.  See PR62077.
3533   stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types
3534   case $BUILD_CONFIG in
3535     *lto*)
3536       if test "x$enable_checking" = x && \
3537          test -d ${srcdir}/gcc && \
3538          test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3539         stage1_checking=--enable-checking=yes,types
3540       fi;;
3541     *) stage1_checking=--enable-checking=yes,types;;
3542   esac
3543 else
3544   stage1_checking=--enable-checking=$enable_checking,types
3545 fi])
3546 AC_SUBST(stage1_checking)
3547
3548 # Enable -Werror in bootstrap stage2 and later.
3549 AC_ARG_ENABLE(werror,
3550 [AS_HELP_STRING([--enable-werror],
3551                 [enable -Werror in bootstrap stage2 and later])], [],
3552 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3553   enable_werror=yes
3554 else
3555   enable_werror=no
3556 fi])
3557 case ${enable_werror} in
3558   yes) stage2_werror_flag="--enable-werror-always" ;;
3559   *) stage2_werror_flag="" ;;
3560 esac
3561 AC_SUBST(stage2_werror_flag)
3562
3563 # Enable --enable-host-shared.
3564 AC_ARG_ENABLE(host-shared,
3565 [AS_HELP_STRING([--enable-host-shared],
3566                 [build host code as shared libraries])],
3567 [host_shared=$enableval], [host_shared=no])
3568 AC_SUBST(host_shared)
3569
3570 # PR jit/64780: Require the user to explicitly specify
3571 # --enable-host-shared if the jit is enabled, hinting
3572 # that they might want to do a separate configure/build of
3573 # the jit, to avoid users from slowing down the rest of the
3574 # compiler by enabling the jit.
3575 if test ${host_shared} = "no" ; then
3576   case "${enable_languages}" in
3577     *jit*)
3578       AC_MSG_ERROR([
3579 Enabling language "jit" requires --enable-host-shared.
3580
3581 --enable-host-shared typically slows the rest of the compiler down by
3582 a few %, so you must explicitly enable it.
3583
3584 If you want to build both the jit and the regular compiler, it is often
3585 best to do this via two separate configure/builds, in separate
3586 directories, to avoid imposing the performance cost of
3587 --enable-host-shared on the regular compiler.])
3588       ;;
3589     *)
3590       ;;
3591   esac
3592 fi
3593
3594 # Specify what files to not compare during bootstrap.
3595
3596 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3597 case "$target" in
3598   hppa*64*-*-hpux*) ;;
3599   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3600   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3601 esac
3602 AC_SUBST(compare_exclusions)
3603
3604 AC_CONFIG_FILES([Makefile],
3605   [sed "$extrasub_build" Makefile |
3606    sed "$extrasub_host" |
3607    sed "$extrasub_target" > mf$$
3608    mv -f mf$$ Makefile],
3609   [extrasub_build="$extrasub_build"
3610    extrasub_host="$extrasub_host"
3611    extrasub_target="$extrasub_target"])
3612 AC_OUTPUT