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 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-libssp \
 166                 target-libquadmath \
 167                 target-libgfortran \
 168                 target-boehm-gc \
 169                 ${libgcj} \
 170                 target-libobjc \
 171                 target-libada \
 172                 target-libgo"
 173
 174 # these tools are built using the target libraries, and are intended to
 175 # run only in the target environment
 176 #
 177 # note: any program that *uses* libraries that are in the "target_libraries"
 178 # list belongs in this list.
 179 #
 180 target_tools="target-rda"
 181
 182 ################################################################################
 183
 184 ## All tools belong in one of the four categories, and are assigned above
 185 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 186 ## is important because configure will choke if they ever get through.
 187 ## ${configdirs} is directories we build using the host tools.
 188 ## ${target_configdirs} is directories we build using the target tools.
 189 configdirs=`echo ${host_libs} ${host_tools}`
 190 target_configdirs=`echo ${target_libraries} ${target_tools}`
 191 build_configdirs=`echo ${build_libs} ${build_tools}`
 192
 193 m4_divert_text([PARSE_ARGS],
 194 [case $srcdir in
 195   *" "*)
 196 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 197     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 198 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 199     ;;
 200 esac
 201 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 202 ])
 203
 204 ################################################################################
 205
 206 srcname="gnu development package"
 207
 208 # This gets set non-empty for some net releases of packages.
 209 appdirs=""
 210
 211 # Define is_cross_compiler to save on calls to 'test'.
 212 is_cross_compiler=
 213 if test x"${host}" = x"${target}" ; then
 214   is_cross_compiler=no
 215 else
 216   is_cross_compiler=yes
 217 fi
 218
 219 # Find the build and target subdir names.
 220 GCC_TOPLEV_SUBDIRS
 221 # Be sure to cover against remnants of an in-tree build.
 222 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 223   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 224 Use a pristine source tree when building in a separate tree])
 225 fi
 226
 227 # Skipdirs are removed silently.
 228 skipdirs=
 229 # Noconfigdirs are removed loudly.
 230 noconfigdirs=""
 231
 232 use_gnu_ld=
 233 # Make sure we don't let GNU ld be added if we didn't want it.
 234 if test x$with_gnu_ld = xno ; then
 235   use_gnu_ld=no
 236   noconfigdirs="$noconfigdirs ld gold"
 237 fi
 238
 239 use_gnu_as=
 240 # Make sure we don't let GNU as be added if we didn't want it.
 241 if test x$with_gnu_as = xno ; then
 242   use_gnu_as=no
 243   noconfigdirs="$noconfigdirs gas"
 244 fi
 245
 246 use_included_zlib=
 247 # Make sure we don't let ZLIB be added if we didn't want it.
 248 if test x$with_system_zlib = xyes ; then
 249   use_included_zlib=no
 250   noconfigdirs="$noconfigdirs zlib"
 251 fi
 252
 253 # some tools are so dependent upon X11 that if we're not building with X,
 254 # it's not even worth trying to configure, much less build, that tool.
 255
 256 case ${with_x} in
 257   yes | "") ;; # the default value for this tree is that X11 is available
 258   no)
 259     skipdirs="${skipdirs} tk itcl libgui"
 260     # We won't be able to build gdbtk without X.
 261     enable_gdbtk=no
 262     ;;
 263   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 264 esac
 265
 266 # Some are only suitable for cross toolchains.
 267 # Remove these if host=target.
 268 cross_only="target-libgloss target-newlib target-opcodes"
 269
 270 case $is_cross_compiler in
 271   no) skipdirs="${skipdirs} ${cross_only}" ;;
 272 esac
 273
 274 # If both --with-headers and --with-libs are specified, default to
 275 # --without-newlib.
 276 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 277    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 278   if test x"${with_newlib}" = x ; then
 279     with_newlib=no
 280   fi
 281 fi
 282
 283 # Recognize --with-newlib/--without-newlib.
 284 case ${with_newlib} in
 285   no) skipdirs="${skipdirs} target-newlib" ;;
 286   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 287 esac
 288
 289 AC_ARG_ENABLE(as-accelerator-for,
 290 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 291                 [build as offload target compiler.
 292                 Specify offload host triple by ARG])])
 293
 294 AC_ARG_ENABLE(offload-targets,
 295 [AS_HELP_STRING([--enable-offload-targets=LIST],
 296                 [enable offloading to devices from comma-separated LIST of
 297                 TARGET[=DIR]. Use optional path to find offload target compiler
 298                 during the build])],
 299 [
 300   if test x"$enable_offload_targets" = x; then
 301     AC_MSG_ERROR([no offload targets specified])
 302   fi
 303 ], [enable_offload_targets=])
 304
 305 # Handle --enable-gold, --enable-ld.
 306 # --disable-gold [--enable-ld]
 307 #     Build only ld.  Default option.
 308 # --enable-gold [--enable-ld]
 309 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 310 #     as "ld.bfd" and "ld".
 311 # --enable-gold=default [--enable-ld]
 312 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 313 #     install ld as "ld.bfd".
 314 # --enable-gold[=default] --disable-ld
 315 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 316 # --enable-gold --enable-ld=default
 317 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 318 #     and ld.bfd).
 319 #     In other words, ld is default
 320 # --enable-gold=default --enable-ld=default
 321 #     Error.
 322
 323 default_ld=
 324 AC_ARG_ENABLE(gold,
 325 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 326                 [build gold @<:@ARG={default,yes,no}@:>@])],
 327 ENABLE_GOLD=$enableval,
 328 ENABLE_GOLD=no)
 329 case "${ENABLE_GOLD}" in
 330   yes|default)
 331     # Check for ELF target.
 332     is_elf=no
 333     case "${target}" in
 334       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 335       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 336       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 337       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 338         case "${target}" in
 339           *-*-linux*aout* | *-*-linux*oldld*)
 340             ;;
 341           *)
 342             is_elf=yes
 343             ;;
 344         esac
 345     esac
 346
 347     if test "$is_elf" = "yes"; then
 348       # Check for target supported by gold.
 349       case "${target}" in
 350         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 351         | aarch64*-*-* | tilegx*-*-*)
 352           configdirs="$configdirs gold"
 353           if test x${ENABLE_GOLD} = xdefault; then
 354             default_ld=gold
 355           fi
 356           ENABLE_GOLD=yes
 357           ;;
 358       esac
 359     fi
 360     ;;
 361   no)
 362     ;;
 363   *)
 364     AC_MSG_ERROR([invalid --enable-gold argument])
 365     ;;
 366 esac
 367
 368 AC_ARG_ENABLE(ld,
 369 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 370                 [build ld @<:@ARG={default,yes,no}@:>@])],
 371 ENABLE_LD=$enableval,
 372 ENABLE_LD=yes)
 373
 374 case "${ENABLE_LD}" in
 375   default)
 376     if test x${default_ld} != x; then
 377       AC_MSG_ERROR([either gold or ld can be the default ld])
 378     fi
 379     ;;
 380   yes)
 381     ;;
 382   no)
 383     if test x${ENABLE_GOLD} != xyes; then
 384       AC_MSG_WARN([neither ld nor gold are enabled])
 385     fi
 386     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 387     ;;
 388   *)
 389     AC_MSG_ERROR([invalid --enable-ld argument])
 390     ;;
 391 esac
 392
 393 # Configure extra directories which are host specific
 394
 395 case "${host}" in
 396   *-cygwin*)
 397     configdirs="$configdirs libtermcap" ;;
 398 esac
 399
 400 # A target can indicate whether a language isn't supported for some reason.
 401 # Only spaces may be used in this macro; not newlines or tabs.
 402 unsupported_languages=
 403
 404 # Remove more programs from consideration, based on the host or
 405 # target this usually means that a port of the program doesn't
 406 # exist yet.
 407
 408 case "${host}" in
 409   i[[3456789]]86-*-msdosdjgpp*)
 410     noconfigdirs="$noconfigdirs tcl tk itcl"
 411     ;;
 412 esac
 413
 414
 415 AC_ARG_ENABLE(libquadmath,
 416 AS_HELP_STRING([--disable-libquadmath],
 417   [do not build libquadmath directory]),
 418 ENABLE_LIBQUADMATH=$enableval,
 419 ENABLE_LIBQUADMATH=yes)
 420 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 421   noconfigdirs="$noconfigdirs target-libquadmath"
 422 fi
 423
 424
 425 AC_ARG_ENABLE(libquadmath-support,
 426 AS_HELP_STRING([--disable-libquadmath-support],
 427   [disable libquadmath support for Fortran]),
 428 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 429 ENABLE_LIBQUADMATH_SUPPORT=yes)
 430 enable_libquadmath_support=
 431 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 432   enable_libquadmath_support=no
 433 fi
 434
 435
 436 AC_ARG_ENABLE(libada,
 437 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 438 ENABLE_LIBADA=$enableval,
 439 ENABLE_LIBADA=yes)
 440 if test "${ENABLE_LIBADA}" != "yes" ; then
 441   noconfigdirs="$noconfigdirs gnattools"
 442 fi
 443
 444 AC_ARG_ENABLE(libssp,
 445 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 446 ENABLE_LIBSSP=$enableval,
 447 ENABLE_LIBSSP=yes)
 448
 449 AC_ARG_ENABLE(libstdcxx,
 450 AS_HELP_STRING([--disable-libstdcxx],
 451   [do not build libstdc++-v3 directory]),
 452 ENABLE_LIBSTDCXX=$enableval,
 453 ENABLE_LIBSTDCXX=default)
 454 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 455   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 456 fi]
 457
 458 # If this is accelerator compiler and its target is intelmic we enable
 459 # target liboffloadmic by default.  If this is compiler with offloading
 460 # for intelmic we enable host liboffloadmic by default.  Otherwise
 461 # liboffloadmic is disabled by default.
 462 AC_ARG_ENABLE([liboffloadmic],
 463 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 464                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 465 [case "$enableval" in
 466   no | host | target)
 467     enable_liboffloadmic=$enableval ;;
 468   *)
 469     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 470 esac],
 471 [if test x"$enable_as_accelerator_for" != x; then
 472   case "${target}" in
 473     *-intelmic-* | *-intelmicemul-*)
 474       enable_liboffloadmic=target
 475       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 476       ;;
 477     *)
 478       enable_liboffloadmic=no
 479       ;;
 480   esac
 481 else
 482   case "${enable_offload_targets}" in
 483     *-intelmic-* | *-intelmicemul-*)
 484       enable_liboffloadmic=host
 485       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 486       ;;
 487     *)
 488       enable_liboffloadmic=no
 489       ;;
 490     esac
 491 fi])
 492 AC_SUBST(extra_liboffloadmic_configure_flags)
 493
 494 # Save it here so that, even in case of --enable-libgcj, if the Java
 495 # front-end isn't enabled, we still get libgcj disabled.
 496 libgcj_saved=$libgcj
 497 case $enable_libgcj in
 498 yes)
 499   # If we reset it here, it won't get added to noconfigdirs in the
 500   # target-specific build rules, so it will be forcibly enabled
 501   # (unless the Java language itself isn't enabled).
 502   libgcj=
 503   ;;
 504 no)
 505   # Make sure we get it printed in the list of not supported target libs.
 506   # Don't disable libffi, though, other languages use it.
 507   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 508   # Clear libgcj_saved so that even if java is enabled libffi won't be
 509   # built.
 510   libgcj_saved=
 511   ;;
 512 esac
 513
 514 AC_ARG_ENABLE(static-libjava,
 515 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 516                 [build static libjava @<:@default=no@:>@])],
 517 ENABLE_STATIC_LIBJAVA=$enableval,
 518 ENABLE_STATIC_LIBJAVA=no)
 519 enable_static_libjava=
 520 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 521   enable_static_libjava=yes
 522 fi
 523
 524 if test x$enable_static_libjava != xyes ; then
 525   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 526 fi
 527 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 528
 529 # Disable libgomp on non POSIX hosted systems.
 530 if test x$enable_libgomp = x ; then
 531     # Enable libgomp by default on hosted POSIX systems.
 532     case "${target}" in
 533     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 534         ;;
 535     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 536         ;;
 537     *-*-solaris2* | *-*-hpux11*)
 538         ;;
 539     *-*-darwin* | *-*-aix*)
 540         ;;
 541     *)
 542         noconfigdirs="$noconfigdirs target-libgomp"
 543         ;;
 544     esac
 545 fi
 546
 547 # Disable libatomic on unsupported systems.
 548 if test -d ${srcdir}/libatomic; then
 549     if test x$enable_libatomic = x; then
 550         AC_MSG_CHECKING([for libatomic support])
 551         if (srcdir=${srcdir}/libatomic; \
 552                 . ${srcdir}/configure.tgt; \
 553                 test -n "$UNSUPPORTED")
 554         then
 555             AC_MSG_RESULT([no])
 556             noconfigdirs="$noconfigdirs target-libatomic"
 557         else
 558             AC_MSG_RESULT([yes])
 559         fi
 560     fi
 561 fi
 562
 563 # Disable libcilkrts on unsupported systems.
 564 if test -d ${srcdir}/libcilkrts; then
 565     if test x$enable_libcilkrts = x; then
 566         AC_MSG_CHECKING([for libcilkrts support])
 567         if (srcdir=${srcdir}/libcilkrts; \
 568                 . ${srcdir}/configure.tgt; \
 569                 test -n "$UNSUPPORTED")
 570         then
 571             AC_MSG_RESULT([no])
 572             noconfigdirs="$noconfigdirs target-libcilkrts"
 573         else
 574             AC_MSG_RESULT([yes])
 575         fi
 576     fi
 577 fi
 578
 579 # Disable liboffloadmic on unsupported systems.
 580 if test -d ${srcdir}/liboffloadmic; then
 581     if test x$enable_liboffloadmic != xno; then
 582         AC_MSG_CHECKING([for liboffloadmic support])
 583         if (srcdir=${srcdir}/liboffloadmic; \
 584                 . ${srcdir}/configure.tgt; \
 585                 test -n "$UNSUPPORTED")
 586         then
 587             AC_MSG_RESULT([no])
 588             noconfigdirs="$noconfigdirs target-liboffloadmic"
 589         else
 590             AC_MSG_RESULT([yes])
 591         fi
 592     fi
 593 fi
 594
 595 # Disable libitm on unsupported systems.
 596 if test -d ${srcdir}/libitm; then
 597     if test x$enable_libitm = x; then
 598         AC_MSG_CHECKING([for libitm support])
 599         if (srcdir=${srcdir}/libitm; \
 600                 . ${srcdir}/configure.tgt; \
 601                 test -n "$UNSUPPORTED")
 602         then
 603             AC_MSG_RESULT([no])
 604             noconfigdirs="$noconfigdirs target-libitm"
 605         else
 606             AC_MSG_RESULT([yes])
 607         fi
 608     fi
 609 fi
 610
 611 # Disable libsanitizer on unsupported systems.
 612 if test -d ${srcdir}/libsanitizer; then
 613     if test x$enable_libsanitizer = x; then
 614         AC_MSG_CHECKING([for libsanitizer support])
 615         if (srcdir=${srcdir}/libsanitizer; \
 616                 . ${srcdir}/configure.tgt; \
 617                 test -n "$UNSUPPORTED")
 618         then
 619             AC_MSG_RESULT([no])
 620             noconfigdirs="$noconfigdirs target-libsanitizer"
 621         else
 622             AC_MSG_RESULT([yes])
 623         fi
 624     fi
 625 fi
 626
 627 # Disable libvtv on unsupported systems.
 628 if test -d ${srcdir}/libvtv; then
 629     if test x$enable_libvtv = x; then
 630         AC_MSG_CHECKING([for libvtv support])
 631         if (srcdir=${srcdir}/libvtv; \
 632                 . ${srcdir}/configure.tgt; \
 633                 test "$VTV_SUPPORTED" != "yes")
 634         then
 635             AC_MSG_RESULT([no])
 636             noconfigdirs="$noconfigdirs target-libvtv"
 637         else
 638             AC_MSG_RESULT([yes])
 639         fi
 640     fi
 641 fi
 642
 643 # Disable libquadmath for some systems.
 644 case "${target}" in
 645   avr-*-*)
 646     noconfigdirs="$noconfigdirs target-libquadmath"
 647     ;;
 648   # libquadmath is unused on AIX and libquadmath build process use of
 649   # LD_LIBRARY_PATH can break AIX bootstrap.
 650   powerpc-*-aix* | rs6000-*-aix*)
 651     noconfigdirs="$noconfigdirs target-libquadmath"
 652     ;;
 653 esac
 654
 655 # Disable libssp for some systems.
 656 case "${target}" in
 657   avr-*-*)
 658     # No hosted I/O support.
 659     noconfigdirs="$noconfigdirs target-libssp"
 660     ;;
 661   powerpc-*-aix* | rs6000-*-aix*)
 662     noconfigdirs="$noconfigdirs target-libssp"
 663     ;;
 664   rl78-*-*)
 665     # libssp uses a misaligned load to trigger a fault, but the RL78
 666     # doesn't fault for those - instead, it gives a build-time error
 667     # for explicit misaligned loads.
 668     noconfigdirs="$noconfigdirs target-libssp"
 669     ;;
 670   visium-*-*)
 671     # No hosted I/O support.
 672     noconfigdirs="$noconfigdirs target-libssp"
 673     ;;
 674 esac
 675
 676 # Disable libstdc++-v3 for some systems.
 677 # Allow user to override this if they pass --enable-libstdc++-v3
 678 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 679   case "${target}" in
 680     *-*-vxworks*)
 681       # VxWorks uses the Dinkumware C++ library.
 682       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 683       ;;
 684     arm*-wince-pe*)
 685       # the C++ libraries don't build on top of CE's C libraries
 686       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 687       ;;
 688     avr-*-*)
 689       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 690       ;;
 691   esac
 692 fi
 693
 694 # Disable Fortran for some systems.
 695 case "${target}" in
 696   mmix-*-*)
 697     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 698     unsupported_languages="$unsupported_languages fortran"
 699     ;;
 700 esac
 701
 702 # Disable Java if libffi is not supported.
 703 case "${target}" in
 704   aarch64-*-*)
 705     ;;
 706   alpha*-*-*)
 707     ;;
 708   arm*-*-*)
 709     ;;
 710   cris-*-*)
 711     ;;
 712   frv-*-*)
 713     ;;
 714   hppa*-*-linux*)
 715     ;;
 716   hppa*-*-hpux*)
 717     ;;
 718   i?86-*-*)
 719     ;;
 720   ia64*-*-*)
 721     ;;
 722   m32r*-*-*)
 723     ;;
 724   m68k-*-*)
 725     ;;
 726   mips*-*-rtems*)
 727     ;;
 728   mips*-*-linux*)
 729     ;;
 730   powerpc*-*-linux*)
 731     ;;
 732   powerpc-*-darwin*)
 733     ;;
 734   powerpc-*-aix* | rs6000-*-aix*)
 735     ;;
 736   powerpc-*-freebsd*)
 737     ;;
 738   powerpc64-*-freebsd*)
 739     ;;
 740   powerpc*-*-rtems*)
 741     ;;
 742   s390-*-* | s390x-*-*)
 743     ;;
 744   sh-*-* | sh[[34]]*-*-*)
 745     ;;
 746   sh64-*-* | sh5*-*-*)
 747     ;;
 748   sparc*-*-*)
 749     ;;
 750   x86_64-*-*)
 751     ;;
 752   *-*-*)
 753     unsupported_languages="$unsupported_languages java"
 754     ;;
 755 esac
 756
 757 # Disable Java, libgcj or related libraries for some systems.
 758 case "${target}" in
 759   powerpc-*-darwin*)
 760     ;;
 761   i[[3456789]]86-*-darwin*)
 762     ;;
 763   x86_64-*-darwin[[912]]*)
 764     ;;
 765   *-*-darwin*)
 766     noconfigdirs="$noconfigdirs ${libgcj}"
 767     ;;
 768   *-*-netware*)
 769     noconfigdirs="$noconfigdirs ${libgcj}"
 770     ;;
 771   *-*-rtems*)
 772     noconfigdirs="$noconfigdirs ${libgcj}"
 773     ;;
 774   *-*-tpf*)
 775     noconfigdirs="$noconfigdirs ${libgcj}"
 776     ;;
 777   *-*-uclinux*)
 778     noconfigdirs="$noconfigdirs ${libgcj}"
 779     ;;
 780   *-*-vxworks*)
 781     noconfigdirs="$noconfigdirs ${libgcj}"
 782     ;;
 783   alpha*-*-*vms*)
 784     noconfigdirs="$noconfigdirs ${libgcj}"
 785     ;;
 786   arm*-*-freebsd*)
 787     noconfigdirs="$noconfigdirs ${libgcj}"
 788     ;;
 789   arm-wince-pe)
 790     noconfigdirs="$noconfigdirs ${libgcj}"
 791     ;;
 792   arm*-*-symbianelf*)
 793     noconfigdirs="$noconfigdirs ${libgcj}"
 794     ;;
 795   bfin-*-*)
 796     noconfigdirs="$noconfigdirs target-boehm-gc"
 797     ;;
 798   cris-*-* | crisv32-*-*)
 799     unsupported_languages="$unsupported_languages java"
 800     case "${target}" in
 801       *-*-linux*)
 802         ;;
 803       *) # See PR46792 regarding target-libffi.
 804         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 805     esac
 806     ;;
 807   hppa*64*-*-linux*)
 808     # In this case, it's because the hppa64-linux target is for
 809     # the kernel only at this point and has no libc, and thus no
 810     # headers, crt*.o, etc., all of which are needed by these.
 811     unsupported_languages="$unsupported_languages java"
 812     ;;
 813   hppa*64*-*-hpux*)
 814     noconfigdirs="$noconfigdirs ${libgcj}"
 815     ;;
 816   hppa*-hp-hpux11*)
 817     ;;
 818   hppa*-*-hpux*)
 819     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 820     # build on HP-UX 10.20.
 821     noconfigdirs="$noconfigdirs ${libgcj}"
 822     ;;
 823   ia64*-*-*vms*)
 824     noconfigdirs="$noconfigdirs ${libgcj}"
 825     ;;
 826   i[[3456789]]86-w64-mingw*)
 827     noconfigdirs="$noconfigdirs ${libgcj}"
 828     ;;
 829   i[[3456789]]86-*-mingw*)
 830     noconfigdirs="$noconfigdirs ${libgcj}"
 831     ;;
 832   x86_64-*-mingw*)
 833     noconfigdirs="$noconfigdirs ${libgcj}"
 834     ;;
 835   mmix-*-*)
 836     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 837     ;;
 838   powerpc-*-aix*)
 839     # copied from rs6000-*-* entry
 840     noconfigdirs="$noconfigdirs ${libgcj}"
 841     ;;
 842   rs6000-*-aix*)
 843     noconfigdirs="$noconfigdirs ${libgcj}"
 844     ;;
 845   *-*-lynxos*)
 846     noconfigdirs="$noconfigdirs ${libgcj}"
 847     ;;
 848 esac
 849
 850 # Disable the go frontend on systems where it is known to not work. Please keep
 851 # this in sync with contrib/config-list.mk.
 852 case "${target}" in
 853 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 854     unsupported_languages="$unsupported_languages go"
 855     ;;
 856 esac
 857
 858 # Disable libgo for some systems where it is known to not work.
 859 # For testing, you can easily override this with --enable-libgo.
 860 if test x$enable_libgo = x; then
 861     case "${target}" in
 862     *-*-darwin*)
 863         # PR 46986
 864         noconfigdirs="$noconfigdirs target-libgo"
 865         ;;
 866     *-*-cygwin* | *-*-mingw*)
 867         noconfigdirs="$noconfigdirs target-libgo"
 868         ;;
 869     *-*-aix*)
 870         noconfigdirs="$noconfigdirs target-libgo"
 871         ;;
 872     esac
 873 fi
 874
 875 # Default libgloss CPU subdirectory.
 876 libgloss_dir="$target_cpu"
 877
 878 case "${target}" in
 879   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 880     libgloss_dir=wince
 881     ;;
 882   aarch64*-*-* )
 883     libgloss_dir=aarch64
 884     ;;
 885   arm*-*-*)
 886     libgloss_dir=arm
 887     ;;
 888   cris-*-* | crisv32-*-*)
 889     libgloss_dir=cris
 890     ;;
 891   hppa*-*-*)
 892     libgloss_dir=pa
 893     ;;
 894   i[[3456789]]86-*-*)
 895     libgloss_dir=i386
 896     ;;
 897   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 898     libgloss_dir=m68hc11
 899     ;;
 900   m68*-*-* | fido-*-*)
 901     libgloss_dir=m68k
 902     ;;
 903   mips*-*-*)
 904     libgloss_dir=mips
 905     ;;
 906   powerpc*-*-*)
 907     libgloss_dir=rs6000
 908     ;;
 909   sparc*-*-*)
 910     libgloss_dir=sparc
 911     ;;
 912 esac
 913
 914 # Disable newlib and libgloss for various target OSes.
 915 case "${target}" in
 916   alpha*-dec-osf*)
 917     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 918     ;;
 919   i[[3456789]]86-*-linux*)
 920     # This section makes it possible to build newlib natively on linux.
 921     # If we are using a cross compiler then don't configure newlib.
 922     if test x${is_cross_compiler} != xno ; then
 923       noconfigdirs="$noconfigdirs target-newlib"
 924     fi
 925     noconfigdirs="$noconfigdirs target-libgloss"
 926     # If we are not using a cross compiler, do configure newlib.
 927     # Note however, that newlib will only be configured in this situation
 928     # if the --with-newlib option has been given, because otherwise
 929     # 'target-newlib' will appear in skipdirs.
 930     ;;
 931   i[[3456789]]86-*-rdos*)
 932     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 933     ;;
 934   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 935     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 936     ;;
 937   sparc-*-sunos4*)
 938     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 939     ;;
 940   *-*-aix*)
 941     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 942     ;;
 943   *-*-beos*)
 944     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 945     ;;
 946   *-*-chorusos)
 947     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 948     ;;
 949   *-*-dragonfly*)
 950     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 951     ;;
 952   *-*-freebsd*)
 953     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 954     ;;
 955   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 956     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 957     ;;
 958   *-*-lynxos*)
 959     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 960     ;;
 961   *-*-mingw*)
 962     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 963     ;;
 964   *-*-netbsd*)
 965     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 966     ;;
 967   *-*-netware*)
 968     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 969     ;;
 970   *-*-tpf*)
 971     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 972     ;;
 973   *-*-uclinux*)
 974     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 975     ;;
 976   *-*-vxworks*)
 977     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 978     ;;
 979 esac
 980
 981 case "${target}" in
 982   *-*-chorusos)
 983     ;;
 984   powerpc-*-darwin*)
 985     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 986     noconfigdirs="$noconfigdirs sim target-rda"
 987     ;;
 988   i[[3456789]]86-*-darwin*)
 989     noconfigdirs="$noconfigdirs ld gprof"
 990     noconfigdirs="$noconfigdirs sim target-rda"
 991     ;;
 992   x86_64-*-darwin[[912]]*)
 993     noconfigdirs="$noconfigdirs ld gas gprof"
 994     noconfigdirs="$noconfigdirs sim target-rda"
 995     ;;
 996   *-*-darwin*)
 997     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 998     noconfigdirs="$noconfigdirs sim target-rda"
 999     ;;
1000   *-*-dragonfly*)
1001     ;;
1002   *-*-freebsd*)
1003     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
1004         && test -f /usr/local/include/gmp.h; then
1005       with_gmp=/usr/local
1006     fi
1007     ;;
1008   *-*-kaos*)
1009     # Remove unsupported stuff on all kaOS configurations.
1010     noconfigdirs="$noconfigdirs target-libgloss"
1011     ;;
1012   *-*-netbsd*)
1013     ;;
1014   *-*-netware*)
1015     ;;
1016   *-*-rtems*)
1017     noconfigdirs="$noconfigdirs target-libgloss"
1018     # this is not caught below because this stanza matches earlier
1019     case $target in
1020       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
1021     esac
1022     ;;
1023     # The tpf target doesn't support gdb yet.
1024   *-*-tpf*)
1025     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1026     ;;
1027   *-*-uclinux*)
1028     noconfigdirs="$noconfigdirs target-rda"
1029     ;;
1030   *-*-vxworks*)
1031     ;;
1032   alpha*-dec-osf*)
1033     # ld works, but does not support shared libraries.
1034     # gas doesn't generate exception information.
1035     noconfigdirs="$noconfigdirs gas ld"
1036     ;;
1037   alpha*-*-*vms*)
1038     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1039     ;;
1040   alpha*-*-*)
1041     # newlib is not 64 bit ready
1042     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1043     ;;
1044   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1045     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1046     ;;
1047   arc-*-*|arceb-*-*)
1048     noconfigdirs="$noconfigdirs target-libgloss"
1049     ;;
1050   arm-*-pe*)
1051     noconfigdirs="$noconfigdirs target-libgloss"
1052     ;;
1053   arm-*-riscix*)
1054     noconfigdirs="$noconfigdirs ld target-libgloss"
1055     ;;
1056   avr-*-rtems*)
1057     ;;
1058   avr-*-*)
1059     if test x${with_avrlibc} != xno; then
1060       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1061     fi
1062     ;;
1063   c4x-*-* | tic4x-*-*)
1064     noconfigdirs="$noconfigdirs target-libgloss"
1065     ;;
1066   tic54x-*-*)
1067     noconfigdirs="$noconfigdirs target-libgloss gdb"
1068     ;;
1069   d10v-*-*)
1070     noconfigdirs="$noconfigdirs target-libgloss"
1071     ;;
1072   d30v-*-*)
1073     noconfigdirs="$noconfigdirs gdb"
1074     ;;
1075   fr30-*-elf*)
1076     noconfigdirs="$noconfigdirs gdb"
1077     ;;
1078   moxie-*-*)
1079     noconfigdirs="$noconfigdirs gprof"
1080     ;;
1081   h8300*-*-*)
1082     noconfigdirs="$noconfigdirs target-libgloss"
1083     ;;
1084   h8500-*-*)
1085     noconfigdirs="$noconfigdirs target-libgloss"
1086     ;;
1087   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1088     ;;
1089   hppa*64*-*-linux*)
1090     ;;
1091   hppa*-*-linux*)
1092     ;;
1093   hppa*-*-*elf* | \
1094   hppa*-*-lites* | \
1095   hppa*-*-openbsd* | \
1096   hppa*64*-*-*)
1097     ;;
1098   hppa*-hp-hpux11*)
1099     noconfigdirs="$noconfigdirs ld"
1100     ;;
1101   hppa*-*-pro*)
1102     ;;
1103   hppa*-*-*)
1104     noconfigdirs="$noconfigdirs ld"
1105     ;;
1106   i960-*-*)
1107     noconfigdirs="$noconfigdirs gdb"
1108     ;;
1109   ia64*-*-elf*)
1110     # No gdb support yet.
1111     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1112     ;;
1113   ia64*-**-hpux*)
1114     # No ld support yet.
1115     noconfigdirs="$noconfigdirs libgui itcl ld"
1116     ;;
1117   ia64*-*-*vms*)
1118     # No ld support yet.
1119     noconfigdirs="$noconfigdirs libgui itcl ld"
1120     ;;
1121   i[[3456789]]86-w64-mingw*)
1122     ;;
1123   i[[3456789]]86-*-mingw*)
1124     target_configdirs="$target_configdirs target-winsup"
1125     ;;
1126   *-*-cygwin*)
1127     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1128     noconfigdirs="$noconfigdirs target-libgloss"
1129     # always build newlib if winsup directory is present.
1130     if test -d "$srcdir/winsup/cygwin"; then
1131       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1132     elif test -d "$srcdir/newlib"; then
1133       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1134     fi
1135     ;;
1136   i[[3456789]]86-*-pe)
1137     noconfigdirs="$noconfigdirs target-libgloss"
1138     ;;
1139   i[[3456789]]86-*-sco3.2v5*)
1140     # The linker does not yet know about weak symbols in COFF,
1141     # and is not configured to handle mixed ELF and COFF.
1142     noconfigdirs="$noconfigdirs ld target-libgloss"
1143     ;;
1144   i[[3456789]]86-*-sco*)
1145     noconfigdirs="$noconfigdirs gprof target-libgloss"
1146     ;;
1147   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1148     noconfigdirs="$noconfigdirs target-libgloss"
1149     ;;
1150   i[[3456789]]86-*-sysv4*)
1151     noconfigdirs="$noconfigdirs target-libgloss"
1152     ;;
1153   i[[3456789]]86-*-beos*)
1154     noconfigdirs="$noconfigdirs gdb"
1155     ;;
1156   i[[3456789]]86-*-rdos*)
1157     noconfigdirs="$noconfigdirs gdb"
1158     ;;
1159   mmix-*-*)
1160     noconfigdirs="$noconfigdirs gdb"
1161     ;;
1162   mt-*-*)
1163     noconfigdirs="$noconfigdirs sim"
1164     ;;
1165   powerpc-*-aix*)
1166     # copied from rs6000-*-* entry
1167     noconfigdirs="$noconfigdirs gprof"
1168     ;;
1169   powerpc*-*-winnt* | powerpc*-*-pe*)
1170     target_configdirs="$target_configdirs target-winsup"
1171     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1172     # always build newlib.
1173     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1174     ;;
1175     # This is temporary until we can link against shared libraries
1176   powerpcle-*-solaris*)
1177     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1178     ;;
1179   powerpc-*-beos*)
1180     noconfigdirs="$noconfigdirs gdb"
1181     ;;
1182   rs6000-*-lynxos*)
1183     noconfigdirs="$noconfigdirs gprof"
1184     ;;
1185   rs6000-*-aix*)
1186     noconfigdirs="$noconfigdirs gprof"
1187     ;;
1188   rs6000-*-*)
1189     noconfigdirs="$noconfigdirs gprof"
1190     ;;
1191   m68k-apollo-*)
1192     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1193     ;;
1194   microblaze*)
1195     noconfigdirs="$noconfigdirs gprof"
1196     ;;
1197   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1198     if test x$with_newlib = xyes; then
1199       noconfigdirs="$noconfigdirs gprof"
1200     fi
1201     ;;
1202   mips*-*-irix5*)
1203     noconfigdirs="$noconfigdirs gprof target-libgloss"
1204     ;;
1205   mips*-*-irix6*)
1206     noconfigdirs="$noconfigdirs gprof target-libgloss"
1207     ;;
1208   mips*-*-bsd*)
1209     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1210     ;;
1211   mips*-*-linux*)
1212     ;;
1213   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1214   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1215     noconfigdirs="$noconfigdirs ld gas gprof"
1216     ;;
1217   mips*-*-*)
1218     noconfigdirs="$noconfigdirs gprof"
1219     ;;
1220   nds32*-*-*)
1221     noconfigdirs="$noconfigdirs gdb"
1222     ;;
1223   nvptx*-*-*)
1224     # nvptx is just a compiler
1225     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1226     ;;
1227   or1k*-*-*)
1228     noconfigdirs="$noconfigdirs gdb"
1229     ;;
1230   sh-*-* | sh64-*-*)
1231     case "${target}" in
1232       sh*-*-elf)
1233          ;;
1234       *)
1235          noconfigdirs="$noconfigdirs target-libgloss" ;;
1236     esac
1237     ;;
1238   sparc-*-sunos4*)
1239     if test x${is_cross_compiler} = xno ; then
1240            use_gnu_ld=no
1241     fi
1242     ;;
1243   tic6x-*-*)
1244     noconfigdirs="$noconfigdirs sim"
1245     ;;
1246   tilepro*-*-* | tilegx*-*-*)
1247     noconfigdirs="$noconfigdirs sim"
1248     ;;
1249   v810-*-*)
1250     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1251     ;;
1252   vax-*-*)
1253     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1254     ;;
1255 esac
1256
1257 # If we aren't building newlib, then don't build libgloss, since libgloss
1258 # depends upon some newlib header files.
1259 case "${noconfigdirs}" in
1260   *target-libgloss*) ;;
1261   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1262 esac
1263
1264 # Work in distributions that contain no compiler tools, like Autoconf.
1265 host_makefile_frag=/dev/null
1266 if test -d ${srcdir}/config ; then
1267 case "${host}" in
1268   i[[3456789]]86-*-msdosdjgpp*)
1269     host_makefile_frag="config/mh-djgpp"
1270     ;;
1271   *-cygwin*)
1272     ACX_CHECK_CYGWIN_CAT_WORKS
1273     host_makefile_frag="config/mh-cygwin"
1274     ;;
1275   *-mingw*)
1276     host_makefile_frag="config/mh-mingw"
1277     ;;
1278   alpha*-*-linux*)
1279     host_makefile_frag="config/mh-alpha-linux"
1280     ;;
1281   hppa*-hp-hpux10*)
1282     host_makefile_frag="config/mh-pa-hpux10"
1283     ;;
1284   hppa*-hp-hpux*)
1285     host_makefile_frag="config/mh-pa"
1286     ;;
1287   hppa*-*)
1288     host_makefile_frag="config/mh-pa"
1289     ;;
1290   *-*-darwin*)
1291     host_makefile_frag="config/mh-darwin"
1292     ;;
1293   powerpc-*-aix*)
1294     host_makefile_frag="config/mh-ppc-aix"
1295     ;;
1296   rs6000-*-aix*)
1297     host_makefile_frag="config/mh-ppc-aix"
1298     ;;
1299 esac
1300 fi
1301
1302 if test "${build}" != "${host}" ; then
1303   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1304   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1305   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1306   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1307   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1308   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1309   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1310   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1311   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1312   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1313   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1314   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1315   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1316 else
1317   AR_FOR_BUILD="\$(AR)"
1318   AS_FOR_BUILD="\$(AS)"
1319   CC_FOR_BUILD="\$(CC)"
1320   CXX_FOR_BUILD="\$(CXX)"
1321   GCJ_FOR_BUILD="\$(GCJ)"
1322   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1323   GOC_FOR_BUILD="\$(GOC)"
1324   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1325   LD_FOR_BUILD="\$(LD)"
1326   NM_FOR_BUILD="\$(NM)"
1327   RANLIB_FOR_BUILD="\$(RANLIB)"
1328   WINDRES_FOR_BUILD="\$(WINDRES)"
1329   WINDMC_FOR_BUILD="\$(WINDMC)"
1330 fi
1331
1332 AC_PROG_CC
1333 AC_PROG_CXX
1334
1335 # We must set the default linker to the linker used by gcc for the correct
1336 # operation of libtool.  If LD is not defined and we are using gcc, try to
1337 # set the LD default to the ld used by gcc.
1338 if test -z "$LD"; then
1339   if test "$GCC" = yes; then
1340     case $build in
1341     *-*-mingw*)
1342       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1343     *)
1344       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1345     esac
1346     case $gcc_prog_ld in
1347     # Accept absolute paths.
1348     [[\\/]* | [A-Za-z]:[\\/]*)]
1349       LD="$gcc_prog_ld" ;;
1350     esac
1351   fi
1352 fi
1353
1354 # Check whether -static-libstdc++ -static-libgcc is supported.
1355 have_static_libs=no
1356 if test "$GCC" = yes; then
1357   saved_LDFLAGS="$LDFLAGS"
1358
1359   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1360   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1361   AC_LANG_PUSH(C++)
1362   AC_LINK_IFELSE([
1363 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1364 #error -static-libstdc++ not implemented
1365 #endif
1366 int main() {}],
1367     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1368     [AC_MSG_RESULT([no])])
1369   AC_LANG_POP(C++)
1370
1371   LDFLAGS="$saved_LDFLAGS"
1372 fi
1373
1374 ACX_PROG_GNAT
1375 ACX_PROG_CMP_IGNORE_INITIAL
1376
1377 AC_ARG_ENABLE([bootstrap],
1378 [AS_HELP_STRING([--enable-bootstrap],
1379                 [enable bootstrapping @<:@yes if native build@:>@])],,
1380 enable_bootstrap=default)
1381
1382 # Issue errors and warnings for invalid/strange bootstrap combinations.
1383 if test -r $srcdir/gcc/configure; then
1384   have_compiler=yes
1385 else
1386   have_compiler=no
1387 fi
1388
1389 case "$have_compiler:$host:$target:$enable_bootstrap" in
1390   *:*:*:no) ;;
1391
1392   # Default behavior.  Enable bootstrap if we have a compiler
1393   # and we are in a native configuration.
1394   yes:$build:$build:default)
1395     enable_bootstrap=yes ;;
1396
1397   *:*:*:default)
1398     enable_bootstrap=no ;;
1399
1400   # We have a compiler and we are in a native configuration, bootstrap is ok
1401   yes:$build:$build:yes)
1402     ;;
1403
1404   # Other configurations, but we have a compiler.  Assume the user knows
1405   # what he's doing.
1406   yes:*:*:yes)
1407     AC_MSG_WARN([trying to bootstrap a cross compiler])
1408     ;;
1409
1410   # No compiler: if they passed --enable-bootstrap explicitly, fail
1411   no:*:*:yes)
1412     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1413
1414   # Fail if wrong command line
1415   *)
1416     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1417     ;;
1418 esac
1419
1420 # Used for setting $lt_cv_objdir
1421 _LT_CHECK_OBJDIR
1422
1423 # Check for GMP, MPFR and MPC
1424 gmplibs="-lmpc -lmpfr -lgmp"
1425 gmpinc=
1426 have_gmp=no
1427
1428 # Specify a location for mpc
1429 # check for this first so it ends up on the link line before mpfr.
1430 AC_ARG_WITH(mpc,
1431 [AS_HELP_STRING([--with-mpc=PATH],
1432                 [specify prefix directory for installed MPC package.
1433                  Equivalent to --with-mpc-include=PATH/include
1434                  plus --with-mpc-lib=PATH/lib])])
1435 AC_ARG_WITH(mpc-include,
1436 [AS_HELP_STRING([--with-mpc-include=PATH],
1437                 [specify directory for installed MPC include files])])
1438 AC_ARG_WITH(mpc-lib,
1439 [AS_HELP_STRING([--with-mpc-lib=PATH],
1440                 [specify directory for the installed MPC library])])
1441
1442 if test "x$with_mpc" != x; then
1443   gmplibs="-L$with_mpc/lib $gmplibs"
1444   gmpinc="-I$with_mpc/include $gmpinc"
1445 fi
1446 if test "x$with_mpc_include" != x; then
1447   gmpinc="-I$with_mpc_include $gmpinc"
1448 fi
1449 if test "x$with_mpc_lib" != x; then
1450   gmplibs="-L$with_mpc_lib $gmplibs"
1451 fi
1452 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1453   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1454   gmpinc='-I$$s/mpc/src '"$gmpinc"
1455   # Do not test the mpc version.  Assume that it is sufficient, since
1456   # it is in the source tree, and the library has not been built yet
1457   # but it would be included on the link line in the version check below
1458   # hence making the test fail.
1459   have_gmp=yes
1460 fi
1461
1462 # Specify a location for mpfr
1463 # check for this first so it ends up on the link line before gmp.
1464 AC_ARG_WITH(mpfr-dir,
1465 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1466 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1467 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1468
1469 AC_ARG_WITH(mpfr,
1470 [AS_HELP_STRING([--with-mpfr=PATH],
1471                 [specify prefix directory for installed MPFR package.
1472                  Equivalent to --with-mpfr-include=PATH/include
1473                  plus --with-mpfr-lib=PATH/lib])])
1474 AC_ARG_WITH(mpfr-include,
1475 [AS_HELP_STRING([--with-mpfr-include=PATH],
1476                 [specify directory for installed MPFR include files])])
1477 AC_ARG_WITH(mpfr-lib,
1478 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1479                 [specify directory for the installed MPFR library])])
1480
1481 if test "x$with_mpfr" != x; then
1482   gmplibs="-L$with_mpfr/lib $gmplibs"
1483   gmpinc="-I$with_mpfr/include $gmpinc"
1484 fi
1485 if test "x$with_mpfr_include" != x; then
1486   gmpinc="-I$with_mpfr_include $gmpinc"
1487 fi
1488 if test "x$with_mpfr_lib" != x; then
1489   gmplibs="-L$with_mpfr_lib $gmplibs"
1490 fi
1491 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1492   # MPFR v3.1.0 moved the sources into a src sub-directory.
1493   if test -d ${srcdir}/mpfr/src; then
1494     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1495     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1496     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1497   else
1498     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1499     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1500     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1501   fi
1502   # Do not test the mpfr version.  Assume that it is sufficient, since
1503   # it is in the source tree, and the library has not been built yet
1504   # but it would be included on the link line in the version check below
1505   # hence making the test fail.
1506   have_gmp=yes
1507 fi
1508
1509 # Specify a location for gmp
1510 AC_ARG_WITH(gmp-dir,
1511 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1512 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1513 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1514
1515 AC_ARG_WITH(gmp,
1516 [AS_HELP_STRING([--with-gmp=PATH],
1517                 [specify prefix directory for the installed GMP package.
1518                  Equivalent to --with-gmp-include=PATH/include
1519                  plus --with-gmp-lib=PATH/lib])])
1520 AC_ARG_WITH(gmp-include,
1521 [AS_HELP_STRING([--with-gmp-include=PATH],
1522                 [specify directory for installed GMP include files])])
1523 AC_ARG_WITH(gmp-lib,
1524 [AS_HELP_STRING([--with-gmp-lib=PATH],
1525                 [specify directory for the installed GMP library])])
1526
1527
1528 if test "x$with_gmp" != x; then
1529   gmplibs="-L$with_gmp/lib $gmplibs"
1530   gmpinc="-I$with_gmp/include $gmpinc"
1531 fi
1532 if test "x$with_gmp_include" != x; then
1533   gmpinc="-I$with_gmp_include $gmpinc"
1534 fi
1535 if test "x$with_gmp_lib" != x; then
1536   gmplibs="-L$with_gmp_lib $gmplibs"
1537 fi
1538 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1539   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1540   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1541   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1542   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1543   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1544   # Do not test the gmp version.  Assume that it is sufficient, since
1545   # it is in the source tree, and the library has not been built yet
1546   # but it would be included on the link line in the version check below
1547   # hence making the test fail.
1548   have_gmp=yes
1549 fi
1550
1551 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1552   have_gmp=yes
1553   saved_CFLAGS="$CFLAGS"
1554   CFLAGS="$CFLAGS $gmpinc"
1555   # Check for the recommended and required versions of GMP.
1556   AC_MSG_CHECKING([for the correct version of gmp.h])
1557   AC_TRY_COMPILE([#include "gmp.h"],[
1558   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1559   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1560   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1561   choke me
1562   #endif
1563   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1564   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1565   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1566   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1567   choke me
1568   #endif
1569   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1570    [AC_MSG_RESULT([no]); have_gmp=no])
1571
1572   # If we have GMP, check the MPFR version.
1573   if test x"$have_gmp" = xyes; then
1574     # Check for the recommended and required versions of MPFR.
1575     AC_MSG_CHECKING([for the correct version of mpfr.h])
1576     AC_TRY_COMPILE([#include <gmp.h>
1577     #include <mpfr.h>],[
1578     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1579     choke me
1580     #endif
1581     ], [AC_TRY_COMPILE([#include <gmp.h>
1582     #include <mpfr.h>],[
1583     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1584     choke me
1585     #endif
1586     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1587      [AC_MSG_RESULT([no]); have_gmp=no])
1588   fi
1589
1590   # Check for the MPC header version.
1591   if test x"$have_gmp" = xyes ; then
1592     # Check for the recommended and required versions of MPC.
1593     AC_MSG_CHECKING([for the correct version of mpc.h])
1594     AC_TRY_COMPILE([#include <mpc.h>],[
1595     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1596     choke me
1597     #endif
1598     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1599     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1600     choke me
1601     #endif
1602     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1603      [AC_MSG_RESULT([no]); have_gmp=no])
1604   fi
1605
1606   # Now check the MPFR library.
1607   if test x"$have_gmp" = xyes; then
1608     saved_LIBS="$LIBS"
1609     LIBS="$LIBS $gmplibs"
1610     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1611     AC_TRY_LINK([#include <mpc.h>],[
1612     mpfr_t n;
1613     mpfr_t x;
1614     mpc_t c;
1615     int t;
1616     mpfr_init (n);
1617     mpfr_init (x);
1618     mpfr_atan2 (n, n, x, GMP_RNDN);
1619     mpfr_erfc (n, x, GMP_RNDN);
1620     mpfr_subnormalize (x, t, GMP_RNDN);
1621     mpfr_clear(n);
1622     mpfr_clear(x);
1623     mpc_init2 (c, 53);
1624     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1625     mpc_cosh (c, c, MPC_RNDNN);
1626     mpc_pow (c, c, c, MPC_RNDNN);
1627     mpc_acosh (c, c, MPC_RNDNN);
1628     mpc_clear (c);
1629     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1630     LIBS="$saved_LIBS"
1631   fi
1632
1633   CFLAGS="$saved_CFLAGS"
1634
1635 # The library versions listed in the error message below should match
1636 # the HARD-minimums enforced above.
1637   if test x$have_gmp != xyes; then
1638     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1639 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1640 their locations.  Source code for these libraries can be found at
1641 their respective hosting sites as well as at
1642 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1643 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1644 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1645 make sure that you have installed both the libraries and the header
1646 files.  They may be located in separate packages.])
1647   fi
1648 fi
1649
1650 # Flags needed for both GMP, MPFR and/or MPC.
1651 AC_SUBST(gmplibs)
1652 AC_SUBST(gmpinc)
1653 AC_SUBST(extra_mpfr_configure_flags)
1654 AC_SUBST(extra_mpc_gmp_configure_flags)
1655 AC_SUBST(extra_mpc_mpfr_configure_flags)
1656 AC_SUBST(extra_isl_gmp_configure_flags)
1657
1658 # Allow host libstdc++ to be specified for static linking with PPL.
1659 AC_ARG_WITH(host-libstdcxx,
1660 [AS_HELP_STRING([--with-host-libstdcxx=L],
1661                 [use linker arguments L to link with libstdc++
1662                  when linking with PPL])])
1663
1664 case $with_host_libstdcxx in
1665   no|yes)
1666     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1667     ;;
1668 esac
1669
1670 # Libraries to use for stage1 or when not bootstrapping.
1671 AC_ARG_WITH(stage1-libs,
1672 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1673 [if test "$withval" = "no" -o "$withval" = "yes"; then
1674    stage1_libs=
1675  else
1676    stage1_libs=$withval
1677  fi],
1678 [stage1_libs=$with_host_libstdcxx])
1679 AC_SUBST(stage1_libs)
1680
1681 # Linker flags to use for stage1 or when not bootstrapping.
1682 AC_ARG_WITH(stage1-ldflags,
1683 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1684 [if test "$withval" = "no" -o "$withval" = "yes"; then
1685    stage1_ldflags=
1686  else
1687    stage1_ldflags=$withval
1688  fi],
1689 [stage1_ldflags=
1690  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1691  # if supported.  But if the user explicitly specified the libraries to use,
1692  # trust that they are doing what they want.
1693  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1694    stage1_ldflags="-static-libstdc++ -static-libgcc"
1695  fi])
1696 AC_SUBST(stage1_ldflags)
1697
1698 # Libraries to use for stage2 and later builds.  This defaults to the
1699 # argument passed to --with-host-libstdcxx.
1700 AC_ARG_WITH(boot-libs,
1701 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1702 [if test "$withval" = "no" -o "$withval" = "yes"; then
1703    poststage1_libs=
1704  else
1705    poststage1_libs=$withval
1706  fi],
1707 [poststage1_libs=$with_host_libstdcxx])
1708 AC_SUBST(poststage1_libs)
1709
1710 # Linker flags to use for stage2 and later builds.
1711 AC_ARG_WITH(boot-ldflags,
1712 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1713                 [linker flags for stage2 and later])],
1714 [if test "$withval" = "no" -o "$withval" = "yes"; then
1715    poststage1_ldflags=
1716  else
1717    poststage1_ldflags=$withval
1718  fi],
1719 [poststage1_ldflags=
1720  # In stages 2 and 3, default to linking libstdc++ and libgcc
1721  # statically.  But if the user explicitly specified the libraries to
1722  # use, trust that they are doing what they want.
1723  if test "$poststage1_libs" = ""; then
1724    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1725  fi])
1726 AC_SUBST(poststage1_ldflags)
1727
1728 # GCC GRAPHITE dependency ISL.
1729 # Basic setup is inlined here, actual checks are in config/isl.m4
1730
1731 AC_ARG_WITH(isl,
1732   [AS_HELP_STRING(
1733    [--with-isl=PATH],
1734    [Specify prefix directory for the installed ISL package.
1735     Equivalent to --with-isl-include=PATH/include
1736     plus --with-isl-lib=PATH/lib])])
1737
1738 # Treat --without-isl as a request to disable
1739 # GRAPHITE support and skip all following checks.
1740 if test "x$with_isl" != "xno"; then
1741   # Check for ISL
1742   dnl Provide configure switches and initialize islinc & isllibs
1743   dnl with user input.
1744   ISL_INIT_FLAGS
1745   dnl The versions of ISL that work for Graphite
1746   ISL_CHECK_VERSION()
1747   dnl Only execute fail-action, if ISL has been requested.
1748   ISL_IF_FAILED([
1749     AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
1750 fi
1751
1752 # If the ISL check failed, disable builds of in-tree variant of ISL
1753 if test "x$with_isl" = xno ||
1754    test "x$gcc_cv_isl" = xno; then
1755   noconfigdirs="$noconfigdirs isl"
1756   islinc=
1757 fi
1758
1759 AC_SUBST(isllibs)
1760 AC_SUBST(islinc)
1761
1762 # Check for LTO support.
1763 AC_ARG_ENABLE(lto,
1764 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1765 enable_lto=$enableval,
1766 enable_lto=yes; default_enable_lto=yes)
1767
1768 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1769   build_lto_plugin=yes
1770 ],[if test x"$default_enable_lto" = x"yes" ; then
1771     case $target in
1772       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1773       # On other non-ELF platforms, LTO has yet to be validated.
1774       *) enable_lto=no ;;
1775     esac
1776   else
1777   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1778   # It would also be nice to check the binutils support, but we don't
1779   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1780   # warn during gcc/ subconfigure; unless you're bootstrapping with
1781   # -flto it won't be needed until after installation anyway.
1782     case $target in
1783       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1784       *) if test x"$enable_lto" = x"yes"; then
1785         AC_MSG_ERROR([LTO support is not enabled for this target.])
1786         fi
1787       ;;
1788     esac
1789   fi
1790   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1791   # Build it unless LTO was explicitly disabled.
1792   case $target in
1793     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1794     *) ;;
1795   esac
1796 ])
1797
1798 AC_ARG_ENABLE(linker-plugin-configure-flags,
1799   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1800     [additional flags for configuring linker plugins @<:@none@:>@])],
1801   extra_linker_plugin_configure_flags=$enableval,
1802   extra_linker_plugin_configure_flags=)
1803 AC_SUBST(extra_linker_plugin_configure_flags)
1804 AC_ARG_ENABLE(linker-plugin-flags,
1805   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1806     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1807   extra_linker_plugin_flags=$enableval,
1808   extra_linker_plugin_flags=)
1809 AC_SUBST(extra_linker_plugin_flags)
1810
1811
1812 # By default, C and C++ are the only stage 1 languages.
1813 stage1_languages=,c,
1814
1815 # Target libraries that we bootstrap.
1816 bootstrap_target_libs=,target-libgcc,
1817
1818 # Figure out what language subdirectories are present.
1819 # Look if the user specified --enable-languages="..."; if not, use
1820 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1821 # go away some day.
1822 # NB:  embedded tabs in this IF block -- do not untabify
1823 if test -d ${srcdir}/gcc; then
1824   if test x"${enable_languages+set}" != xset; then
1825     if test x"${LANGUAGES+set}" = xset; then
1826       enable_languages="${LANGUAGES}"
1827         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1828     else
1829       enable_languages=all
1830     fi
1831   else
1832     if test x"${enable_languages}" = x ||
1833        test x"${enable_languages}" = xyes;
1834        then
1835       echo configure.in: --enable-languages needs at least one language argument 1>&2
1836       exit 1
1837     fi
1838   fi
1839   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1840
1841   # 'f95' is the old name for the 'fortran' language. We issue a warning
1842   # and make the substitution.
1843   case ,${enable_languages}, in
1844     *,f95,*)
1845       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1846       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1847       ;;
1848   esac
1849
1850   # If bootstrapping, C++ must be enabled.
1851   case ",$enable_languages,:$enable_bootstrap" in
1852     *,c++,*:*) ;;
1853     *:yes)
1854       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1855         enable_languages="${enable_languages},c++"
1856       else
1857         AC_MSG_ERROR([bootstrapping requires c++ sources])
1858       fi
1859       ;;
1860   esac
1861
1862   # First scan to see if an enabled language requires some other language.
1863   # We assume that a given config-lang.in will list all the language
1864   # front ends it requires, even if some are required indirectly.
1865   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1866     case ${lang_frag} in
1867       ..) ;;
1868       # The odd quoting in the next line works around
1869       # an apparent bug in bash 1.12 on linux.
1870       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1871       *)
1872         # From the config-lang.in, get $language, $lang_requires, and
1873         # $lang_requires_boot_languages.
1874         language=
1875         lang_requires=
1876         lang_requires_boot_languages=
1877         . ${lang_frag}
1878         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1879           case ,${enable_languages}, in
1880             *,$other,*) ;;
1881             *,all,*) ;;
1882             *,$language,*)
1883               echo " \`$other' language required by \`$language'; enabling" 1>&2
1884               enable_languages="${enable_languages},${other}"
1885               ;;
1886           esac
1887         done
1888         for other in ${lang_requires_boot_languages} ; do
1889           if test "$other" != "c"; then
1890             case ,${enable_stage1_languages}, in
1891               *,$other,*) ;;
1892               *,all,*) ;;
1893               *)
1894                 case ,${enable_languages}, in
1895                   *,$language,*)
1896                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1897                     enable_stage1_languages="$enable_stage1_languages,${other}"
1898                     ;;
1899                 esac
1900                 ;;
1901             esac
1902           fi
1903         done
1904         ;;
1905     esac
1906   done
1907
1908   new_enable_languages=,c,
1909
1910   # If LTO is enabled, add the LTO front end.
1911   if test "$enable_lto" = "yes" ; then
1912     case ,${enable_languages}, in
1913       *,lto,*) ;;
1914       *) enable_languages="${enable_languages},lto" ;;
1915     esac
1916     if test "${build_lto_plugin}" = "yes" ; then
1917       configdirs="$configdirs lto-plugin"
1918     fi
1919   fi
1920
1921   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1922   potential_languages=,c,
1923
1924   enabled_target_libs=
1925   disabled_target_libs=
1926
1927   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1928     case ${lang_frag} in
1929       ..) ;;
1930       # The odd quoting in the next line works around
1931       # an apparent bug in bash 1.12 on linux.
1932       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1933       *)
1934         # From the config-lang.in, get $language, $target_libs,
1935         # $lang_dirs, $boot_language, and $build_by_default
1936         language=
1937         target_libs=
1938         lang_dirs=
1939         subdir_requires=
1940         boot_language=no
1941         build_by_default=yes
1942         . ${lang_frag}
1943         if test x${language} = x; then
1944           echo "${lang_frag} doesn't set \$language." 1>&2
1945           exit 1
1946         fi
1947
1948         if test "$language" = "c++"; then
1949           boot_language=yes
1950         fi
1951
1952         add_this_lang=no
1953         case ,${enable_languages}, in
1954           *,${language},*)
1955             # Language was explicitly selected; include it
1956             # unless it is C, which is enabled by default.
1957             if test "$language" != "c"; then
1958               add_this_lang=yes
1959             fi
1960             ;;
1961           *,all,*)
1962             # 'all' was selected, select it if it is a default language
1963             if test "$language" != "c"; then
1964               add_this_lang=${build_by_default}
1965             fi
1966             ;;
1967         esac
1968
1969         # Disable languages that need other directories if these aren't available.
1970         for i in $subdir_requires; do
1971           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1972           case ,${enable_languages}, in
1973             *,${language},*)
1974               # Specifically requested language; tell them.
1975               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1976               ;;
1977             *)
1978               # Silently disable.
1979               add_this_lang=unsupported
1980               ;;
1981           esac
1982         done
1983
1984         # Disable Ada if no preexisting GNAT is available.
1985         case ,${enable_languages},:${language}:${have_gnat} in
1986           *,${language},*:ada:no)
1987             # Specifically requested language; tell them.
1988             AC_MSG_ERROR([GNAT is required to build $language])
1989             ;;
1990           *:ada:no)
1991             # Silently disable.
1992             add_this_lang=unsupported
1993             ;;
1994         esac
1995
1996         # Disable a language that is unsupported by the target.
1997         case " $unsupported_languages " in
1998           *" $language "*)
1999             add_this_lang=unsupported
2000             ;;
2001         esac
2002
2003         case $add_this_lang in
2004           unsupported)
2005             # Remove language-dependent dirs.
2006             disabled_target_libs="$disabled_target_libs $target_libs"
2007             noconfigdirs="$noconfigdirs $lang_dirs"
2008             ;;
2009           no)
2010             # Remove language-dependent dirs; still show language as supported.
2011             disabled_target_libs="$disabled_target_libs $target_libs"
2012             noconfigdirs="$noconfigdirs $lang_dirs"
2013             potential_languages="${potential_languages}${language},"
2014             ;;
2015           yes)
2016             new_enable_languages="${new_enable_languages}${language},"
2017             potential_languages="${potential_languages}${language},"
2018             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2019             enabled_target_libs="$enabled_target_libs $target_libs"
2020             case "${boot_language}:,$enable_stage1_languages," in
2021               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2022                 # Add to (comma-separated) list of stage 1 languages.
2023                 case ",$stage1_languages," in
2024                   *,$language,* | ,yes, | ,all,) ;;
2025                   *) stage1_languages="${stage1_languages}${language}," ;;
2026                 esac
2027                 # We need to bootstrap any supporting libraries.
2028                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2029                 ;;
2030             esac
2031             ;;
2032         esac
2033         ;;
2034     esac
2035   done
2036
2037   # Add target libraries which are only needed for disabled languages
2038   # to noconfigdirs.
2039   if test -n "$disabled_target_libs"; then
2040     for dir in $disabled_target_libs; do
2041       case " $enabled_target_libs " in
2042       *" ${dir} "*) ;;
2043       *) noconfigdirs="$noconfigdirs $dir" ;;
2044       esac
2045     done
2046   fi
2047
2048   AC_ARG_ENABLE(stage1-languages,
2049   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2050                   [choose additional languages to build during
2051                   stage1.  Mostly useful for compiler development])],
2052   [case ,${enable_stage1_languages}, in
2053     ,no,|,,)
2054       # Set it to something that will have no effect in the loop below
2055       enable_stage1_languages=c ;;
2056     ,yes,)
2057       enable_stage1_languages=`echo $new_enable_languages | \
2058         sed -e "s/^,//" -e "s/,$//" ` ;;
2059     *,all,*)
2060       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2061         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2062   esac
2063
2064   # Add "good" languages from enable_stage1_languages to stage1_languages,
2065   # while "bad" languages go in missing_languages.  Leave no duplicates.
2066   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2067     case $potential_languages in
2068       *,$i,*)
2069         case $stage1_languages in
2070           *,$i,*) ;;
2071           *) stage1_languages="$stage1_languages$i," ;;
2072         esac ;;
2073       *)
2074         case $missing_languages in
2075           *,$i,*) ;;
2076           *) missing_languages="$missing_languages$i," ;;
2077         esac ;;
2078      esac
2079   done])
2080
2081   # Remove leading/trailing commas that were added for simplicity
2082   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2083   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2084   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2085   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2086
2087   if test "x$missing_languages" != x; then
2088     AC_MSG_ERROR([
2089 The following requested languages could not be built: ${missing_languages}
2090 Supported languages are: ${potential_languages}])
2091   fi
2092   if test "x$new_enable_languages" != "x$enable_languages"; then
2093     echo The following languages will be built: ${new_enable_languages}
2094     enable_languages="$new_enable_languages"
2095   fi
2096
2097   AC_SUBST(stage1_languages)
2098   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2099 fi
2100
2101 # Handle --disable-<component> generically.
2102 for dir in $configdirs $build_configdirs $target_configdirs ; do
2103   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2104   varname=`echo $dirname | sed -e s/+/_/g`
2105   if eval test x\${enable_${varname}} "=" xno ; then
2106     noconfigdirs="$noconfigdirs $dir"
2107   fi
2108 done
2109
2110 # Check for Boehm's garbage collector
2111 AC_ARG_ENABLE(objc-gc,
2112 [AS_HELP_STRING([--enable-objc-gc],
2113                 [enable use of Boehm's garbage collector with the
2114                  GNU Objective-C runtime])],
2115 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2116   *,objc,*:*:yes:*target-boehm-gc*)
2117     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2118     ;;
2119 esac])
2120
2121 # Make sure we only build Boehm's garbage collector if required.
2122 case ,${enable_languages},:${enable_objc_gc} in
2123   *,objc,*:yes)
2124     # Keep target-boehm-gc if requested for Objective-C.
2125     ;;
2126   *)
2127     # Otherwise remove target-boehm-gc depending on target-libjava.
2128     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2129       noconfigdirs="$noconfigdirs target-boehm-gc"
2130     fi
2131     ;;
2132 esac
2133
2134 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2135 case ,${enable_languages}, in
2136   *,c++,*)
2137     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2138     case "${noconfigdirs}" in
2139       *target-libstdc++-v3*)
2140         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2141         ;;
2142       *) ;;
2143     esac
2144     ;;
2145   *)
2146     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2147     ;;
2148 esac
2149
2150 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2151 # $build_configdirs and $target_configdirs.
2152 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2153
2154 notsupp=""
2155 for dir in . $skipdirs $noconfigdirs ; do
2156   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2157   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2158     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2159     if test -r $srcdir/$dirname/configure ; then
2160       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2161         true
2162       else
2163         notsupp="$notsupp $dir"
2164       fi
2165     fi
2166   fi
2167   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2168     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2169     if test -r $srcdir/$dirname/configure ; then
2170       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2171         true
2172       else
2173         notsupp="$notsupp $dir"
2174       fi
2175     fi
2176   fi
2177   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2178     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2179     if test -r $srcdir/$dirname/configure ; then
2180       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2181         true
2182       else
2183         notsupp="$notsupp $dir"
2184       fi
2185     fi
2186   fi
2187 done
2188
2189 # Quietly strip out all directories which aren't configurable in this tree.
2190 # This relies on all configurable subdirectories being autoconfiscated, which
2191 # is now the case.
2192 build_configdirs_all="$build_configdirs"
2193 build_configdirs=
2194 for i in ${build_configdirs_all} ; do
2195   j=`echo $i | sed -e s/build-//g`
2196   if test -f ${srcdir}/$j/configure ; then
2197     build_configdirs="${build_configdirs} $i"
2198   fi
2199 done
2200
2201 configdirs_all="$configdirs"
2202 configdirs=
2203 for i in ${configdirs_all} ; do
2204   if test -f ${srcdir}/$i/configure ; then
2205     configdirs="${configdirs} $i"
2206   fi
2207 done
2208
2209 target_configdirs_all="$target_configdirs"
2210 target_configdirs=
2211 for i in ${target_configdirs_all} ; do
2212   j=`echo $i | sed -e s/target-//g`
2213   if test -f ${srcdir}/$j/configure ; then
2214     target_configdirs="${target_configdirs} $i"
2215   fi
2216 done
2217
2218 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2219 # so we have to add it after the preceding checks.
2220 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2221 then
2222   case " $configdirs " in
2223     *" libiberty "*)
2224       # If we can build libiberty, we can also build libiberty-linker-plugin.
2225       configdirs="$configdirs libiberty-linker-plugin"
2226       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2227         --with-libiberty=../libiberty-linker-plugin";;
2228     *)
2229       AC_MSG_ERROR([libiberty missing]);;
2230   esac
2231 fi
2232
2233 # Sometimes we have special requirements for the host libiberty.
2234 extra_host_libiberty_configure_flags=
2235 case " $configdirs " in
2236   *" lto-plugin "* | *" libcc1 "*)
2237     # When these are to be built as shared libraries, the same applies to
2238     # libiberty.
2239     extra_host_libiberty_configure_flags=--enable-shared
2240     ;;
2241 esac
2242 AC_SUBST(extra_host_libiberty_configure_flags)
2243
2244 # Produce a warning message for the subdirs we can't configure.
2245 # This isn't especially interesting in the Cygnus tree, but in the individual
2246 # FSF releases, it's important to let people know when their machine isn't
2247 # supported by the one or two programs in a package.
2248
2249 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2250   # If $appdirs is non-empty, at least one of those directories must still
2251   # be configured, or we error out.  (E.g., if the gas release supports a
2252   # specified target in some subdirs but not the gas subdir, we shouldn't
2253   # pretend that all is well.)
2254   if test -n "$appdirs" ; then
2255     for dir in $appdirs ; do
2256       if test -r $dir/Makefile.in ; then
2257         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2258           appdirs=""
2259           break
2260         fi
2261         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2262           appdirs=""
2263           break
2264         fi
2265       fi
2266     done
2267     if test -n "$appdirs" ; then
2268       echo "*** This configuration is not supported by this package." 1>&2
2269       exit 1
2270     fi
2271   fi
2272   # Okay, some application will build, or we don't care to check.  Still
2273   # notify of subdirs not getting built.
2274   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2275   echo "    ${notsupp}" 1>&2
2276   echo "    (Any other directories should still work fine.)" 1>&2
2277 fi
2278
2279 case "$host" in
2280   *msdosdjgpp*)
2281     enable_gdbtk=no ;;
2282 esac
2283
2284 # To find our prefix, in gcc_cv_tool_prefix.
2285 ACX_TOOL_DIRS
2286
2287 copy_dirs=
2288
2289 AC_ARG_WITH([build-sysroot],
2290   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2291                   [use sysroot as the system root during the build])],
2292   [if test x"$withval" != x ; then
2293      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2294    fi],
2295   [SYSROOT_CFLAGS_FOR_TARGET=])
2296 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2297
2298 AC_ARG_WITH([debug-prefix-map],
2299   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2300                   [map A to B, C to D ... in debug information])],
2301   [if test x"$withval" != x; then
2302      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2303      for debug_map in $withval; do
2304        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2305      done
2306    fi],
2307   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2308 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2309
2310 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2311 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2312 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2313 # We want to ensure that TARGET libraries (which we know are built with
2314 # gcc) are built with "-O2 -g", so include those options when setting
2315 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2316 if test "x$CFLAGS_FOR_TARGET" = x; then
2317   CFLAGS_FOR_TARGET=$CFLAGS
2318   case " $CFLAGS " in
2319     *" -O2 "*) ;;
2320     *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2321   esac
2322   case " $CFLAGS " in
2323     *" -g "* | *" -g3 "*) ;;
2324     *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2325   esac
2326 fi
2327 AC_SUBST(CFLAGS_FOR_TARGET)
2328
2329 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2330   CXXFLAGS_FOR_TARGET=$CXXFLAGS
2331   case " $CXXFLAGS " in
2332     *" -O2 "*) ;;
2333     *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2334   esac
2335   case " $CXXFLAGS " in
2336     *" -g "* | *" -g3 "*) ;;
2337     *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2338   esac
2339 fi
2340 AC_SUBST(CXXFLAGS_FOR_TARGET)
2341
2342 AC_SUBST(LDFLAGS_FOR_TARGET)
2343
2344 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2345 # the named directory are copied to $(tooldir)/sys-include.
2346 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2347   if test x${is_cross_compiler} = xno ; then
2348     echo 1>&2 '***' --with-headers is only supported when cross compiling
2349     exit 1
2350   fi
2351   if test x"${with_headers}" != xyes ; then
2352     x=${gcc_cv_tool_prefix}
2353     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2354   fi
2355 fi
2356
2357 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2358 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2359 # are permitted.
2360 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2361   if test x${is_cross_compiler} = xno ; then
2362     echo 1>&2 '***' --with-libs is only supported when cross compiling
2363     exit 1
2364   fi
2365   if test x"${with_libs}" != xyes ; then
2366     # Copy the libraries in reverse order, so that files in the first named
2367     # library override files in subsequent libraries.
2368     x=${gcc_cv_tool_prefix}
2369     for l in ${with_libs}; do
2370       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2371     done
2372   fi
2373 fi
2374
2375 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2376 #
2377 # This is done by determining whether or not the appropriate directory
2378 # is available, and by checking whether or not specific configurations
2379 # have requested that this magic not happen.
2380 #
2381 # The command line options always override the explicit settings in
2382 # configure.in, and the settings in configure.in override this magic.
2383 #
2384 # If the default for a toolchain is to use GNU as and ld, and you don't
2385 # want to do that, then you should use the --without-gnu-as and
2386 # --without-gnu-ld options for the configure script.  Similarly, if
2387 # the default is to use the included zlib and you don't want to do that,
2388 # you should use the --with-system-zlib option for the configure script.
2389
2390 if test x${use_gnu_as} = x &&
2391    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2392   with_gnu_as=yes
2393   extra_host_args="$extra_host_args --with-gnu-as"
2394 fi
2395
2396 if test x${use_gnu_ld} = x &&
2397    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2398   with_gnu_ld=yes
2399   extra_host_args="$extra_host_args --with-gnu-ld"
2400 fi
2401
2402 if test x${use_included_zlib} = x &&
2403    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2404   :
2405 else
2406   with_system_zlib=yes
2407   extra_host_args="$extra_host_args --with-system-zlib"
2408 fi
2409
2410 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2411 # can detect this case.
2412
2413 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2414   with_newlib=yes
2415   extra_host_args="$extra_host_args --with-newlib"
2416 fi
2417
2418 # Handle ${copy_dirs}
2419 set fnord ${copy_dirs}
2420 shift
2421 while test $# != 0 ; do
2422   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2423     :
2424   else
2425     echo Copying $1 to $2
2426
2427     # Use the install script to create the directory and all required
2428     # parent directories.
2429     if test -d $2 ; then
2430       :
2431     else
2432       echo >config.temp
2433       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2434     fi
2435
2436     # Copy the directory, assuming we have tar.
2437     # FIXME: Should we use B in the second tar?  Not all systems support it.
2438     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2439
2440     # It is the responsibility of the user to correctly adjust all
2441     # symlinks.  If somebody can figure out how to handle them correctly
2442     # here, feel free to add the code.
2443
2444     echo $1 > $2/COPIED
2445   fi
2446   shift; shift
2447 done
2448
2449 # Determine a target-dependent exec_prefix that the installed
2450 # gcc will search in.  Keep this list sorted by triplet, with
2451 # the *-*-osname triplets last.
2452 md_exec_prefix=
2453 case "${target}" in
2454   i[[34567]]86-pc-msdosdjgpp*)
2455     md_exec_prefix=/dev/env/DJDIR/bin
2456     ;;
2457   *-*-hpux* | \
2458   *-*-nto-qnx* | \
2459   *-*-solaris2*)
2460     md_exec_prefix=/usr/ccs/bin
2461     ;;
2462 esac
2463
2464 extra_arflags_for_target=
2465 extra_nmflags_for_target=
2466 extra_ranlibflags_for_target=
2467 target_makefile_frag=/dev/null
2468 case "${target}" in
2469   spu-*-*)
2470     target_makefile_frag="config/mt-spu"
2471     ;;
2472   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2473     target_makefile_frag="config/mt-sde"
2474     ;;
2475   mipsisa*-*-elfoabi*)
2476     target_makefile_frag="config/mt-mips-elfoabi"
2477     ;;
2478   mips*-*-*linux* | mips*-*-gnu*)
2479     target_makefile_frag="config/mt-mips-gnu"
2480     ;;
2481   nios2-*-elf*)
2482     target_makefile_frag="config/mt-nios2-elf"
2483     ;;
2484   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2485     target_makefile_frag="config/mt-gnu"
2486     ;;
2487   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2488     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2489     # commands to handle both 32-bit and 64-bit objects.  These flags are
2490     # harmless if we're using GNU nm or ar.
2491     extra_arflags_for_target=" -X32_64"
2492     extra_nmflags_for_target=" -B -X32_64"
2493     ;;
2494 esac
2495
2496 alphaieee_frag=/dev/null
2497 case $target in
2498   alpha*-*-*)
2499     # This just makes sure to use the -mieee option to build target libs.
2500     # This should probably be set individually by each library.
2501     alphaieee_frag="config/mt-alphaieee"
2502     ;;
2503 esac
2504
2505 # If --enable-target-optspace always use -Os instead of -O2 to build
2506 # the target libraries, similarly if it is not specified, use -Os
2507 # on selected platforms.
2508 ospace_frag=/dev/null
2509 case "${enable_target_optspace}:${target}" in
2510   yes:*)
2511     ospace_frag="config/mt-ospace"
2512     ;;
2513   :d30v-*)
2514     ospace_frag="config/mt-d30v"
2515     ;;
2516   :m32r-* | :d10v-* | :fr30-*)
2517     ospace_frag="config/mt-ospace"
2518     ;;
2519   no:* | :*)
2520     ;;
2521   *)
2522     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2523     ;;
2524 esac
2525
2526 # Some systems (e.g., one of the i386-aix systems the gas testers are
2527 # using) don't handle "\$" correctly, so don't use it here.
2528 tooldir='${exec_prefix}'/${target_noncanonical}
2529 build_tooldir=${tooldir}
2530
2531 # Create a .gdbinit file which runs the one in srcdir
2532 # and tells GDB to look there for source files.
2533
2534 if test -r ${srcdir}/.gdbinit ; then
2535   case ${srcdir} in
2536     .) ;;
2537     *) cat > ./.gdbinit <<EOF
2538 # ${NO_EDIT}
2539 dir ${srcdir}
2540 dir .
2541 source ${srcdir}/.gdbinit
2542 EOF
2543     ;;
2544   esac
2545 fi
2546
2547 # Make sure that the compiler is able to generate an executable.  If it
2548 # can't, we are probably in trouble.  We don't care whether we can run the
2549 # executable--we might be using a cross compiler--we only care whether it
2550 # can be created.  At this point the main configure script has set CC.
2551 we_are_ok=no
2552 echo "int main () { return 0; }" > conftest.c
2553 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2554 if test $? = 0 ; then
2555   if test -s conftest || test -s conftest.exe ; then
2556     we_are_ok=yes
2557   fi
2558 fi
2559 case $we_are_ok in
2560   no)
2561     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2562     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2563     rm -f conftest*
2564     exit 1
2565     ;;
2566 esac
2567 rm -f conftest*
2568
2569 # Decide which environment variable is used to find dynamic libraries.
2570 case "${host}" in
2571   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2572   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2573   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2574   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2575 esac
2576
2577 # On systems where the dynamic library environment variable is PATH,
2578 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2579 # built executables to PATH.
2580 if test "$RPATH_ENVVAR" = PATH; then
2581   GCC_SHLIB_SUBDIR=/shlib
2582 else
2583   GCC_SHLIB_SUBDIR=
2584 fi
2585
2586 # Adjust the toplevel makefile according to whether bootstrap was selected.
2587 case $enable_bootstrap in
2588   yes)
2589     bootstrap_suffix=bootstrap
2590     BUILD_CONFIG=bootstrap-debug
2591     ;;
2592   no)
2593     bootstrap_suffix=no-bootstrap
2594     BUILD_CONFIG=
2595     ;;
2596 esac
2597
2598 AC_MSG_CHECKING(for default BUILD_CONFIG)
2599
2600 AC_ARG_WITH([build-config],
2601   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2602                   [use config/NAME.mk build configuration])],
2603   [case $with_build_config in
2604    yes) with_build_config= ;;
2605    no) with_build_config= BUILD_CONFIG= ;;
2606    esac])
2607
2608 if test "x${with_build_config}" != x; then
2609   BUILD_CONFIG=$with_build_config
2610 else
2611   case $BUILD_CONFIG in
2612   bootstrap-debug)
2613     if echo "int f (void) { return 0; }" > conftest.c &&
2614        ${CC} -c conftest.c &&
2615        mv conftest.o conftest.o.g0 &&
2616        ${CC} -c -g conftest.c &&
2617        mv conftest.o conftest.o.g &&
2618        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2619       :
2620     else
2621       BUILD_CONFIG=
2622     fi
2623     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2624     ;;
2625   esac
2626 fi
2627 AC_MSG_RESULT($BUILD_CONFIG)
2628 AC_SUBST(BUILD_CONFIG)
2629
2630 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2631 AC_MSG_CHECKING([for --enable-vtable-verify])
2632 AC_ARG_ENABLE(vtable-verify,
2633 [  --enable-vtable-verify    Enable vtable verification feature ],
2634 [case "$enableval" in
2635  yes) enable_vtable_verify=yes ;;
2636  no)  enable_vtable_verify=no ;;
2637  *)   enable_vtable_verify=no;;
2638  esac],
2639 [enable_vtable_verify=no])
2640 AC_MSG_RESULT($enable_vtable_verify)
2641
2642 # Record target_configdirs and the configure arguments for target and
2643 # build configuration in Makefile.
2644 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2645 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2646 bootstrap_fixincludes=no
2647
2648 # If we are building libgomp, bootstrap it.
2649 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2650   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2651 fi
2652
2653 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2654 # or bootstrap-ubsan, bootstrap it.
2655 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2656   case "$BUILD_CONFIG" in
2657     *bootstrap-asan* | *bootstrap-ubsan* )
2658       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2659       bootstrap_fixincludes=yes
2660       ;;
2661   esac
2662 fi
2663
2664 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2665 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2666    test "$enable_vtable_verify" != no; then
2667   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2668 fi
2669
2670 # Determine whether gdb needs tk/tcl or not.
2671 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2672 # and in that case we want gdb to be built without tk.  Ugh!
2673 # In fact I believe gdb is the *only* package directly dependent on tk,
2674 # so we should be able to put the 'maybe's in unconditionally and
2675 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2676 # 100% sure that that's safe though.
2677
2678 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2679 case "$enable_gdbtk" in
2680   no)
2681     GDB_TK="" ;;
2682   yes)
2683     GDB_TK="${gdb_tk}" ;;
2684   *)
2685     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2686     # distro.  Eventually someone will fix this and move Insight, nee
2687     # gdbtk to a separate directory.
2688     if test -d ${srcdir}/gdb/gdbtk ; then
2689       GDB_TK="${gdb_tk}"
2690     else
2691       GDB_TK=""
2692     fi
2693     ;;
2694 esac
2695 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2696 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2697
2698 # Strip out unwanted targets.
2699
2700 # While at that, we remove Makefiles if we were started for recursive
2701 # configuration, so that the top-level Makefile reconfigures them,
2702 # like we used to do when configure itself was recursive.
2703
2704 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2705 # but now we're fixing up the Makefile ourselves with the additional
2706 # commands passed to AC_CONFIG_FILES.  Use separate variables
2707 # extrasub-{build,host,target} not because there is any reason to split
2708 # the substitutions up that way, but only to remain below the limit of
2709 # 99 commands in a script, for HP-UX sed.
2710 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2711
2712 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2713   yes:yes:*\ gold\ *:*,c++,*) ;;
2714   yes:yes:*\ gold\ *:*)
2715     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2716     ;;
2717 esac
2718
2719 extrasub_build=
2720 for module in ${build_configdirs} ; do
2721   if test -z "${no_recursion}" \
2722      && test -f ${build_subdir}/${module}/Makefile; then
2723     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2724     rm -f ${build_subdir}/${module}/Makefile
2725   fi
2726   extrasub_build="$extrasub_build
2727 /^@if build-$module\$/d
2728 /^@endif build-$module\$/d
2729 /^@if build-$module-$bootstrap_suffix\$/d
2730 /^@endif build-$module-$bootstrap_suffix\$/d"
2731 done
2732 extrasub_host=
2733 for module in ${configdirs} ; do
2734   if test -z "${no_recursion}"; then
2735     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2736       if test -f ${file}; then
2737         echo 1>&2 "*** removing ${file} to force reconfigure"
2738         rm -f ${file}
2739       fi
2740     done
2741   fi
2742   case ${module},${bootstrap_fixincludes} in
2743     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2744     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2745   esac
2746   extrasub_host="$extrasub_host
2747 /^@if $module\$/d
2748 /^@endif $module\$/d
2749 /^@if $module-$host_bootstrap_suffix\$/d
2750 /^@endif $module-$host_bootstrap_suffix\$/d"
2751 done
2752 extrasub_target=
2753 for module in ${target_configdirs} ; do
2754   if test -z "${no_recursion}" \
2755      && test -f ${target_subdir}/${module}/Makefile; then
2756     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2757     rm -f ${target_subdir}/${module}/Makefile
2758   fi
2759
2760   # We only bootstrap target libraries listed in bootstrap_target_libs.
2761   case $bootstrap_target_libs in
2762     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2763     *) target_bootstrap_suffix=no-bootstrap ;;
2764   esac
2765
2766   extrasub_target="$extrasub_target
2767 /^@if target-$module\$/d
2768 /^@endif target-$module\$/d
2769 /^@if target-$module-$target_bootstrap_suffix\$/d
2770 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2771 done
2772
2773 # Do the final fixup along with target modules.
2774 extrasub_target="$extrasub_target
2775 /^@if /,/^@endif /d"
2776
2777 # Create the serialization dependencies.  This uses a temporary file.
2778
2779 AC_ARG_ENABLE([serial-configure],
2780 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2781                 [force sequential configuration of
2782                  sub-packages for the host, target or build
2783                  machine, or all sub-packages])])
2784
2785 case ${enable_serial_configure} in
2786   yes)
2787     enable_serial_build_configure=yes
2788     enable_serial_host_configure=yes
2789     enable_serial_target_configure=yes
2790     ;;
2791 esac
2792
2793 # These force 'configure's to be done one at a time, to avoid problems
2794 # with contention over a shared config.cache.
2795 rm -f serdep.tmp
2796 echo '# serdep.tmp' > serdep.tmp
2797 olditem=
2798 test "x${enable_serial_build_configure}" = xyes &&
2799 for item in ${build_configdirs} ; do
2800   case ${olditem} in
2801     "") ;;
2802     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2803   esac
2804   olditem=${item}
2805 done
2806 olditem=
2807 test "x${enable_serial_host_configure}" = xyes &&
2808 for item in ${configdirs} ; do
2809   case ${olditem} in
2810     "") ;;
2811     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2812   esac
2813   olditem=${item}
2814 done
2815 olditem=
2816 test "x${enable_serial_target_configure}" = xyes &&
2817 for item in ${target_configdirs} ; do
2818   case ${olditem} in
2819     "") ;;
2820     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2821   esac
2822   olditem=${item}
2823 done
2824 serialization_dependencies=serdep.tmp
2825 AC_SUBST_FILE(serialization_dependencies)
2826
2827 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2828 # target, nonopt, and variable assignments.  These are the ones we
2829 # might not want to pass down to subconfigures.  The exception being
2830 # --cache-file=/dev/null, which is used to turn off the use of cache
2831 # files altogether, and which should be passed on to subconfigures.
2832 # Also strip program-prefix, program-suffix, and program-transform-name,
2833 # so that we can pass down a consistent program-transform-name.
2834 baseargs=
2835 tbaseargs=
2836 keep_next=no
2837 skip_next=no
2838 eval "set -- $ac_configure_args"
2839 for ac_arg
2840 do
2841   if test X"$skip_next" = X"yes"; then
2842     skip_next=no
2843     continue
2844   fi
2845   if test X"$keep_next" = X"yes"; then
2846     case $ac_arg in
2847       *\'*)
2848         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2849     esac
2850     baseargs="$baseargs '$ac_arg'"
2851     tbaseargs="$tbaseargs '$ac_arg'"
2852     keep_next=no
2853     continue
2854   fi
2855
2856   # Handle separated arguments.  Based on the logic generated by
2857   # autoconf 2.59.
2858   case $ac_arg in
2859     *=* | --config-cache | -C | -disable-* | --disable-* \
2860       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2861       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2862       | -with-* | --with-* | -without-* | --without-* | --x)
2863       separate_arg=no
2864       ;;
2865     -*)
2866       separate_arg=yes
2867       ;;
2868     *)
2869       separate_arg=no
2870       ;;
2871   esac
2872
2873   skip_targ=no
2874   case $ac_arg in
2875 changequote(,)
2876   --with-* | --without-*)
2877     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2878
2879     case $libopt in
2880     *[-_]include)
2881       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2882       ;;
2883     *[-_]lib)
2884       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2885       ;;
2886     *)
2887       lib=$libopt
2888       ;;
2889     esac
2890 changequote([,])
2891
2892     case $lib in
2893     mpc | mpfr | gmp | isl)
2894       # If we're processing --with-$lib, --with-$lib-include or
2895       # --with-$lib-lib, for one of the libs above, and target is
2896       # different from host, don't pass the current argument to any
2897       # target library's configure.
2898       if test x$is_cross_compiler = xyes; then
2899         skip_targ=yes
2900       fi
2901       ;;
2902     esac
2903     ;;
2904   esac
2905
2906   case "$ac_arg" in
2907     --cache-file=/dev/null | \
2908     -cache-file=/dev/null )
2909       # Handled here to avoid the test to skip args below.
2910       baseargs="$baseargs '$ac_arg'"
2911       tbaseargs="$tbaseargs '$ac_arg'"
2912       # Assert: $separate_arg should always be no.
2913       keep_next=$separate_arg
2914       ;;
2915     --no*)
2916       continue
2917       ;;
2918     --c* | \
2919     --sr* | \
2920     --ho* | \
2921     --bu* | \
2922     --t* | \
2923     --program-* | \
2924     -cache_file* | \
2925     -srcdir* | \
2926     -host* | \
2927     -build* | \
2928     -target* | \
2929     -program-prefix* | \
2930     -program-suffix* | \
2931     -program-transform-name* )
2932       skip_next=$separate_arg
2933       continue
2934       ;;
2935     -*)
2936       # An option.  Add it.
2937       case $ac_arg in
2938         *\'*)
2939           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2940       esac
2941       baseargs="$baseargs '$ac_arg'"
2942       if test X"$skip_targ" = Xno; then
2943         tbaseargs="$tbaseargs '$ac_arg'"
2944       fi
2945       keep_next=$separate_arg
2946       ;;
2947     *)
2948       # Either a variable assignment, or a nonopt (triplet).  Don't
2949       # pass it down; let the Makefile handle this.
2950       continue
2951       ;;
2952   esac
2953 done
2954 # Remove the initial space we just introduced and, as these will be
2955 # expanded by make, quote '$'.
2956 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2957
2958 # Add in --program-transform-name, after --program-prefix and
2959 # --program-suffix have been applied to it.  Autoconf has already
2960 # doubled dollar signs and backslashes in program_transform_name; we want
2961 # the backslashes un-doubled, and then the entire thing wrapped in single
2962 # quotes, because this will be expanded first by make and then by the shell.
2963 # Also, because we want to override the logic in subdir configure scripts to
2964 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2965 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2966 ${program_transform_name}
2967 EOF_SED
2968 gcc_transform_name=`cat conftestsed.out`
2969 rm -f conftestsed.out
2970 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2971 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2972 if test "$silent" = yes; then
2973   baseargs="$baseargs --silent"
2974   tbaseargs="$tbaseargs --silent"
2975 fi
2976 baseargs="$baseargs --disable-option-checking"
2977 tbaseargs="$tbaseargs --disable-option-checking"
2978
2979 # Record and document user additions to sub configure arguments.
2980 AC_ARG_VAR([build_configargs],
2981            [additional configure arguments for build directories])
2982 AC_ARG_VAR([host_configargs],
2983            [additional configure arguments for host directories])
2984 AC_ARG_VAR([target_configargs],
2985            [additional configure arguments for target directories])
2986
2987 # For the build-side libraries, we just need to pretend we're native,
2988 # and not use the same cache file.  Multilibs are neither needed nor
2989 # desired.  We can't even use the same cache file for all build-side
2990 # libraries, as they're compiled differently; some with C, some with
2991 # C++ or with different feature-enabling options.
2992 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
2993
2994 # For host modules, accept cache file option, or specification as blank.
2995 case "${cache_file}" in
2996 "") # empty
2997   cache_file_option="" ;;
2998 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2999   cache_file_option="--cache-file=${cache_file}" ;;
3000 *) # relative path
3001   cache_file_option="--cache-file=../${cache_file}" ;;
3002 esac
3003
3004 # Host dirs don't like to share a cache file either, horribly enough.
3005 # This seems to be due to autoconf 2.5x stupidity.
3006 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3007
3008 target_configargs="$target_configargs ${tbaseargs}"
3009
3010 # Passing a --with-cross-host argument lets the target libraries know
3011 # whether they are being built with a cross-compiler or being built
3012 # native.  However, it would be better to use other mechanisms to make the
3013 # sorts of decisions they want to make on this basis.  Please consider
3014 # this option to be deprecated.  FIXME.
3015 if test x${is_cross_compiler} = xyes ; then
3016   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3017 fi
3018
3019 # Special user-friendly check for native x86_64-linux build, if
3020 # multilib is not explicitly enabled.
3021 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3022   x86_64-*linux*:yes:$build:$build:)
3023     # Make sure we have a developement environment that handles 32-bit
3024     dev64=no
3025     echo "int main () { return 0; }" > conftest.c
3026     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3027     if test $? = 0 ; then
3028       if test -s conftest || test -s conftest.exe ; then
3029         dev64=yes
3030       fi
3031     fi
3032     rm -f conftest*
3033     if test x${dev64} != xyes ; then
3034       AC_MSG_ERROR([I suspect your system does not have 32-bit developement 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.])
3035     fi
3036     ;;
3037 esac
3038
3039 # Default to --enable-multilib.
3040 if test x${enable_multilib} = x ; then
3041   target_configargs="--enable-multilib ${target_configargs}"
3042 fi
3043
3044 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3045 # changed from the earlier setting of with_newlib.
3046 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3047   target_configargs="--with-newlib ${target_configargs}"
3048 fi
3049
3050 # Different target subdirs use different values of certain variables
3051 # (notably CXX).  Worse, multilibs use *lots* of different values.
3052 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3053 # it doesn't automatically accept command-line overrides of them.
3054 # This means it's not safe for target subdirs to share a cache file,
3055 # which is disgusting, but there you have it.  Hopefully this can be
3056 # fixed in future.  It's still worthwhile to use a cache file for each
3057 # directory.  I think.
3058
3059 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3060 # We need to pass --target, as newer autoconf's requires consistency
3061 # for target_alias and gcc doesn't manage it consistently.
3062 target_configargs="--cache-file=./config.cache ${target_configargs}"
3063
3064 FLAGS_FOR_TARGET=
3065 case " $target_configdirs " in
3066  *" newlib "*)
3067   case " $target_configargs " in
3068   *" --with-newlib "*)
3069    case "$target" in
3070     *-cygwin*)
3071       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3072       ;;
3073    esac
3074
3075    # If we're not building GCC, don't discard standard headers.
3076    if test -d ${srcdir}/gcc; then
3077      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3078
3079      if test "${build}" != "${host}"; then
3080        # On Canadian crosses, CC_FOR_TARGET will have already been set
3081        # by `configure', so we won't have an opportunity to add -Bgcc/
3082        # to it.  This is right: we don't want to search that directory
3083        # for binaries, but we want the header files in there, so add
3084        # them explicitly.
3085        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3086
3087        # Someone might think of using the pre-installed headers on
3088        # Canadian crosses, in case the installed compiler is not fully
3089        # compatible with the compiler being built.  In this case, it
3090        # would be better to flag an error than risking having
3091        # incompatible object files being constructed.  We can't
3092        # guarantee that an error will be flagged, but let's hope the
3093        # compiler will do it, when presented with incompatible header
3094        # files.
3095      fi
3096    fi
3097
3098    case "${target}-${is_cross_compiler}" in
3099    i[[3456789]]86-*-linux*-no)
3100       # Here host == target, so we don't need to build gcc,
3101       # so we don't want to discard standard headers.
3102       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3103       ;;
3104    *)
3105       # If we're building newlib, use its generic headers last, but search
3106       # for any libc-related directories first (so make it the last -B
3107       # switch).
3108       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3109
3110       # If we're building libgloss, find the startup file, simulator library
3111       # and linker script.
3112       case " $target_configdirs " in
3113         *" libgloss "*)
3114         # Look for startup file, simulator library and maybe linker script.
3115         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3116         # Look for libnosys.a in case the target needs it.
3117         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3118         # Most targets have the linker script in the source directory.
3119         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3120         ;;
3121       esac
3122       ;;
3123    esac
3124    ;;
3125   esac
3126   ;;
3127 esac
3128
3129 case "$target" in
3130   x86_64-*mingw* | *-w64-mingw*)
3131   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3132   # however, use a symlink named 'mingw' in ${prefix} .
3133     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3134     ;;
3135   *-mingw*)
3136   # MinGW can't be handled as Cygwin above since it does not use newlib.
3137     FLAGS_FOR_TARGET=$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'
3138     ;;
3139 esac
3140
3141 # Allow the user to override the flags for
3142 # our build compiler if desired.
3143 if test x"${build}" = x"${host}" ; then
3144   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3145   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3146   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3147 fi
3148
3149 # On Canadian crosses, we'll be searching the right directories for
3150 # the previously-installed cross compiler, so don't bother to add
3151 # flags for directories within the install tree of the compiler
3152 # being built; programs in there won't even run.
3153 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3154   # Search for pre-installed headers if nothing else fits.
3155   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3156 fi
3157
3158 if test "x${use_gnu_ld}" = x &&
3159    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3160   # Arrange for us to find uninstalled linker scripts.
3161   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3162 fi
3163
3164 # Search for other target-specific linker scripts and such.
3165 case "${target}" in
3166   mep*)
3167     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3168     ;;
3169 esac
3170
3171 # Makefile fragments.
3172 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3173 do
3174   eval fragval=\$$frag
3175   if test $fragval != /dev/null; then
3176     eval $frag=${srcdir}/$fragval
3177   fi
3178 done
3179 AC_SUBST_FILE(host_makefile_frag)
3180 AC_SUBST_FILE(target_makefile_frag)
3181 AC_SUBST_FILE(alphaieee_frag)
3182 AC_SUBST_FILE(ospace_frag)
3183
3184 # Miscellanea: directories, flags, etc.
3185 AC_SUBST(RPATH_ENVVAR)
3186 AC_SUBST(GCC_SHLIB_SUBDIR)
3187 AC_SUBST(tooldir)
3188 AC_SUBST(build_tooldir)
3189 AC_SUBST(CONFIGURE_GDB_TK)
3190 AC_SUBST(GDB_TK)
3191 AC_SUBST(INSTALL_GDB_TK)
3192
3193 # Build module lists & subconfigure args.
3194 AC_SUBST(build_configargs)
3195 AC_SUBST(build_configdirs)
3196
3197 # Host module lists & subconfigure args.
3198 AC_SUBST(host_configargs)
3199 AC_SUBST(configdirs)
3200 AC_SUBST(target_configdirs)
3201
3202 # Target module lists & subconfigure args.
3203 AC_SUBST(target_configargs)
3204
3205
3206 # Build tools.
3207 AC_SUBST(AR_FOR_BUILD)
3208 AC_SUBST(AS_FOR_BUILD)
3209 AC_SUBST(CC_FOR_BUILD)
3210 AC_SUBST(CFLAGS_FOR_BUILD)
3211 AC_SUBST(CXXFLAGS_FOR_BUILD)
3212 AC_SUBST(CXX_FOR_BUILD)
3213 AC_SUBST(DLLTOOL_FOR_BUILD)
3214 AC_SUBST(GCJ_FOR_BUILD)
3215 AC_SUBST(GFORTRAN_FOR_BUILD)
3216 AC_SUBST(GOC_FOR_BUILD)
3217 AC_SUBST(LDFLAGS_FOR_BUILD)
3218 AC_SUBST(LD_FOR_BUILD)
3219 AC_SUBST(NM_FOR_BUILD)
3220 AC_SUBST(RANLIB_FOR_BUILD)
3221 AC_SUBST(WINDMC_FOR_BUILD)
3222 AC_SUBST(WINDRES_FOR_BUILD)
3223
3224 # Generate default definitions for YACC, M4, LEX and other programs that run
3225 # on the build machine.  These are used if the Makefile can't locate these
3226 # programs in objdir.
3227 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3228
3229 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3230 case " $build_configdirs " in
3231   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3232 esac
3233
3234 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3235 case " $build_configdirs " in
3236   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3237 esac
3238
3239 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3240 case " $build_configdirs " in
3241   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3242 esac
3243
3244 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3245 case " $build_configdirs " in
3246   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3247   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3248 esac
3249
3250 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3251 case " $build_configdirs " in
3252   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3253 esac
3254
3255 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3256 case " $build_configdirs " in
3257   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3258   *)
3259 changequote(,)
3260     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3261     # higher, else we use the "missing" dummy.
3262     if ${MAKEINFO} --version \
3263        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3264       :
3265     else
3266       MAKEINFO="$MISSING makeinfo"
3267     fi
3268     ;;
3269 changequote([,])
3270 esac
3271
3272 # FIXME: expect and dejagnu may become build tools?
3273
3274 AC_CHECK_PROGS(EXPECT, expect, expect)
3275 case " $configdirs " in
3276   *" expect "*)
3277     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3278     ;;
3279 esac
3280
3281 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3282 case " $configdirs " in
3283   *" dejagnu "*)
3284     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3285     ;;
3286 esac
3287
3288
3289 # Host tools.
3290 NCN_STRICT_CHECK_TOOLS(AR, ar)
3291 NCN_STRICT_CHECK_TOOLS(AS, as)
3292 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3293 NCN_STRICT_CHECK_TOOLS(LD, ld)
3294 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3295 NCN_STRICT_CHECK_TOOLS(NM, nm)
3296 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3297 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3298 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3299 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3300 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3301 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3302 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3303 AC_SUBST(CC)
3304 AC_SUBST(CXX)
3305 AC_SUBST(CFLAGS)
3306 AC_SUBST(CXXFLAGS)
3307
3308 # Target tools.
3309 AC_ARG_WITH([build-time-tools],
3310   [AS_HELP_STRING([--with-build-time-tools=PATH],
3311                   [use given path to find target tools during the build])],
3312   [case x"$withval" in
3313      x/*) ;;
3314      *)
3315        with_build_time_tools=
3316        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3317        ;;
3318    esac],
3319   [with_build_time_tools=])
3320
3321 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3322 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3323 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3324 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3325 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3326 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3327
3328 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3329 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3330 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3331 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3332 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3333 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3334 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3335 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3336 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3337 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3338 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3339 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3340 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3341
3342 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3343
3344 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3345 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3346 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3347 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3348 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3349                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3350                 c++)
3351 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3352                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3353                 c++)
3354 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3355 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3356 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3357                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3358 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3359                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3360 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3361                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3362 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3363 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3364 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3365 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3366 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3367 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3368 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3369 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3370 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3371 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3372
3373 AC_SUBST(FLAGS_FOR_TARGET)
3374 AC_SUBST(RAW_CXX_FOR_TARGET)
3375
3376 # Certain tools may need extra flags.
3377 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3378 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3379 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3380
3381 # When building target libraries, except in a Canadian cross, we use
3382 # the same toolchain as the compiler we just built.
3383 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3384 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3385 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3386 if test $host = $build; then
3387   case " $configdirs " in
3388     *" gcc "*)
3389       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3390       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3391       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3392       ;;
3393   esac
3394 fi
3395
3396 AC_SUBST(COMPILER_AS_FOR_TARGET)
3397 AC_SUBST(COMPILER_LD_FOR_TARGET)
3398 AC_SUBST(COMPILER_NM_FOR_TARGET)
3399
3400 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3401 AC_ARG_ENABLE(maintainer-mode,
3402 [AS_HELP_STRING([--enable-maintainer-mode],
3403                 [enable make rules and dependencies not useful
3404                  (and sometimes confusing) to the casual installer])],
3405       USE_MAINTAINER_MODE=$enableval,
3406       USE_MAINTAINER_MODE=no)
3407 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3408 AC_SUBST(MAINTAINER_MODE_TRUE)
3409 AC_SUBST(MAINTAINER_MODE_FALSE)
3410 if test "$USE_MAINTAINER_MODE" = yes; then
3411   MAINTAINER_MODE_TRUE=
3412   MAINTAINER_MODE_FALSE='#'
3413 else
3414   MAINTAINER_MODE_TRUE='#'
3415   MAINTAINER_MODE_FALSE=
3416 fi
3417 MAINT=$MAINTAINER_MODE_TRUE
3418 AC_SUBST(MAINT)dnl
3419
3420 # ---------------------
3421 # GCC bootstrap support
3422 # ---------------------
3423
3424 # Stage specific cflags for build.
3425 stage1_cflags="-g"
3426 case $build in
3427   vax-*-*)
3428     case ${GCC} in
3429       yes) stage1_cflags="-g -Wa,-J" ;;
3430       *) stage1_cflags="-g -J" ;;
3431     esac ;;
3432 esac
3433
3434 AC_SUBST(stage1_cflags)
3435
3436 # Enable --enable-checking in stage1 of the compiler.
3437 AC_ARG_ENABLE(stage1-checking,
3438 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3439                 [choose additional checking for stage1 of the compiler])],
3440 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3441 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3442   stage1_checking=--enable-checking=yes,types
3443 else
3444   stage1_checking=--enable-checking=$enable_checking,types
3445 fi])
3446 AC_SUBST(stage1_checking)
3447
3448 # Enable -Werror in bootstrap stage2 and later.
3449 AC_ARG_ENABLE(werror,
3450 [AS_HELP_STRING([--enable-werror],
3451                 [enable -Werror in bootstrap stage2 and later])], [],
3452 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3453   enable_werror=yes
3454 else
3455   enable_werror=no
3456 fi])
3457 case ${enable_werror} in
3458   yes) stage2_werror_flag="--enable-werror-always" ;;
3459   *) stage2_werror_flag="" ;;
3460 esac
3461 AC_SUBST(stage2_werror_flag)
3462
3463 # Enable --enable-host-shared.
3464 AC_ARG_ENABLE(host-shared,
3465 [AS_HELP_STRING([--enable-host-shared],
3466                 [build host code as shared libraries])],
3467 [host_shared=$enableval], [host_shared=no])
3468 AC_SUBST(host_shared)
3469
3470 # PR jit/64780: Require the user to explicitly specify
3471 # --enable-host-shared if the jit is enabled, hinting
3472 # that they might want to do a separate configure/build of
3473 # the jit, to avoid users from slowing down the rest of the
3474 # compiler by enabling the jit.
3475 if test ${host_shared} = "no" ; then
3476   case "${enable_languages}" in
3477     *jit*)
3478       AC_MSG_ERROR([
3479 Enabling language "jit" requires --enable-host-shared.
3480
3481 --enable-host-shared typically slows the rest of the compiler down by
3482 a few %, so you must explicitly enable it.
3483
3484 If you want to build both the jit and the regular compiler, it is often
3485 best to do this via two separate configure/builds, in separate
3486 directories, to avoid imposing the performance cost of
3487 --enable-host-shared on the regular compiler.])
3488       ;;
3489     *)
3490       ;;
3491   esac
3492 fi
3493
3494 # Specify what files to not compare during bootstrap.
3495
3496 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3497 case "$target" in
3498   hppa*64*-*-hpux*) ;;
3499   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3500   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3501 esac
3502 AC_SUBST(compare_exclusions)
3503
3504 AC_CONFIG_FILES([Makefile],
3505   [sed "$extrasub_build" Makefile |
3506    sed "$extrasub_host" |
3507    sed "$extrasub_target" > mf$$
3508    mv -f mf$$ Makefile],
3509   [extrasub_build="$extrasub_build"
3510    extrasub_host="$extrasub_host"
3511    extrasub_target="$extrasub_target"])
3512 AC_OUTPUT