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-libmpx \
 166                 target-libssp \
 167                 target-libquadmath \
 168                 target-libgfortran \
 169                 target-boehm-gc \
 170                 ${libgcj} \
 171                 target-libobjc \
 172                 target-libada \
 173                 target-libgo"
 174
 175 # these tools are built using the target libraries, and are intended to
 176 # run only in the target environment
 177 #
 178 # note: any program that *uses* libraries that are in the "target_libraries"
 179 # list belongs in this list.
 180 #
 181 target_tools="target-rda"
 182
 183 ################################################################################
 184
 185 ## All tools belong in one of the four categories, and are assigned above
 186 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 187 ## is important because configure will choke if they ever get through.
 188 ## ${configdirs} is directories we build using the host tools.
 189 ## ${target_configdirs} is directories we build using the target tools.
 190 configdirs=`echo ${host_libs} ${host_tools}`
 191 target_configdirs=`echo ${target_libraries} ${target_tools}`
 192 build_configdirs=`echo ${build_libs} ${build_tools}`
 193
 194 m4_divert_text([PARSE_ARGS],
 195 [case $srcdir in
 196   *" "*)
 197 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 198     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 199 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 200     ;;
 201 esac
 202 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 203 ])
 204
 205 ################################################################################
 206
 207 srcname="gnu development package"
 208
 209 # This gets set non-empty for some net releases of packages.
 210 appdirs=""
 211
 212 # Define is_cross_compiler to save on calls to 'test'.
 213 is_cross_compiler=
 214 if test x"${host}" = x"${target}" ; then
 215   is_cross_compiler=no
 216 else
 217   is_cross_compiler=yes
 218 fi
 219
 220 # Find the build and target subdir names.
 221 GCC_TOPLEV_SUBDIRS
 222 # Be sure to cover against remnants of an in-tree build.
 223 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 224   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 225 Use a pristine source tree when building in a separate tree])
 226 fi
 227
 228 # Skipdirs are removed silently.
 229 skipdirs=
 230 # Noconfigdirs are removed loudly.
 231 noconfigdirs=""
 232
 233 use_gnu_ld=
 234 # Make sure we don't let GNU ld be added if we didn't want it.
 235 if test x$with_gnu_ld = xno ; then
 236   use_gnu_ld=no
 237   noconfigdirs="$noconfigdirs ld gold"
 238 fi
 239
 240 use_gnu_as=
 241 # Make sure we don't let GNU as be added if we didn't want it.
 242 if test x$with_gnu_as = xno ; then
 243   use_gnu_as=no
 244   noconfigdirs="$noconfigdirs gas"
 245 fi
 246
 247 use_included_zlib=
 248 # Make sure we don't let ZLIB be added if we didn't want it.
 249 if test x$with_system_zlib = xyes ; then
 250   use_included_zlib=no
 251   noconfigdirs="$noconfigdirs zlib"
 252 fi
 253
 254 # some tools are so dependent upon X11 that if we're not building with X,
 255 # it's not even worth trying to configure, much less build, that tool.
 256
 257 case ${with_x} in
 258   yes | "") ;; # the default value for this tree is that X11 is available
 259   no)
 260     skipdirs="${skipdirs} tk itcl libgui"
 261     # We won't be able to build gdbtk without X.
 262     enable_gdbtk=no
 263     ;;
 264   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 265 esac
 266
 267 # Some are only suitable for cross toolchains.
 268 # Remove these if host=target.
 269 cross_only="target-libgloss target-newlib target-opcodes"
 270
 271 case $is_cross_compiler in
 272   no) skipdirs="${skipdirs} ${cross_only}" ;;
 273 esac
 274
 275 # If both --with-headers and --with-libs are specified, default to
 276 # --without-newlib.
 277 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 278    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 279   if test x"${with_newlib}" = x ; then
 280     with_newlib=no
 281   fi
 282 fi
 283
 284 # Recognize --with-newlib/--without-newlib.
 285 case ${with_newlib} in
 286   no) skipdirs="${skipdirs} target-newlib" ;;
 287   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 288 esac
 289
 290 AC_ARG_ENABLE(as-accelerator-for,
 291 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 292                 [build as offload target compiler.
 293                 Specify offload host triple by ARG])])
 294
 295 AC_ARG_ENABLE(offload-targets,
 296 [AS_HELP_STRING([--enable-offload-targets=LIST],
 297                 [enable offloading to devices from comma-separated LIST of
 298                 TARGET[=DIR]. Use optional path to find offload target compiler
 299                 during the build])],
 300 [
 301   if test x"$enable_offload_targets" = x; then
 302     AC_MSG_ERROR([no offload targets specified])
 303   fi
 304 ], [enable_offload_targets=])
 305
 306 # Handle --enable-gold, --enable-ld.
 307 # --disable-gold [--enable-ld]
 308 #     Build only ld.  Default option.
 309 # --enable-gold [--enable-ld]
 310 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 311 #     as "ld.bfd" and "ld".
 312 # --enable-gold=default [--enable-ld]
 313 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 314 #     install ld as "ld.bfd".
 315 # --enable-gold[=default] --disable-ld
 316 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 317 # --enable-gold --enable-ld=default
 318 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 319 #     and ld.bfd).
 320 #     In other words, ld is default
 321 # --enable-gold=default --enable-ld=default
 322 #     Error.
 323
 324 default_ld=
 325 AC_ARG_ENABLE(gold,
 326 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 327                 [build gold @<:@ARG={default,yes,no}@:>@])],
 328 ENABLE_GOLD=$enableval,
 329 ENABLE_GOLD=no)
 330 case "${ENABLE_GOLD}" in
 331   yes|default)
 332     # Check for ELF target.
 333     is_elf=no
 334     case "${target}" in
 335       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 336       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 337       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 338       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 339         case "${target}" in
 340           *-*-linux*aout* | *-*-linux*oldld*)
 341             ;;
 342           *)
 343             is_elf=yes
 344             ;;
 345         esac
 346     esac
 347
 348     if test "$is_elf" = "yes"; then
 349       # Check for target supported by gold.
 350       case "${target}" in
 351         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 352         | aarch64*-*-* | tilegx*-*-*)
 353           configdirs="$configdirs gold"
 354           if test x${ENABLE_GOLD} = xdefault; then
 355             default_ld=gold
 356           fi
 357           ENABLE_GOLD=yes
 358           ;;
 359       esac
 360     fi
 361     ;;
 362   no)
 363     ;;
 364   *)
 365     AC_MSG_ERROR([invalid --enable-gold argument])
 366     ;;
 367 esac
 368
 369 AC_ARG_ENABLE(ld,
 370 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 371                 [build ld @<:@ARG={default,yes,no}@:>@])],
 372 ENABLE_LD=$enableval,
 373 ENABLE_LD=yes)
 374
 375 case "${ENABLE_LD}" in
 376   default)
 377     if test x${default_ld} != x; then
 378       AC_MSG_ERROR([either gold or ld can be the default ld])
 379     fi
 380     ;;
 381   yes)
 382     ;;
 383   no)
 384     if test x${ENABLE_GOLD} != xyes; then
 385       AC_MSG_WARN([neither ld nor gold are enabled])
 386     fi
 387     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 388     ;;
 389   *)
 390     AC_MSG_ERROR([invalid --enable-ld argument])
 391     ;;
 392 esac
 393
 394 # Configure extra directories which are host specific
 395
 396 case "${host}" in
 397   *-cygwin*)
 398     configdirs="$configdirs libtermcap" ;;
 399 esac
 400
 401 # A target can indicate whether a language isn't supported for some reason.
 402 # Only spaces may be used in this macro; not newlines or tabs.
 403 unsupported_languages=
 404
 405 # Remove more programs from consideration, based on the host or
 406 # target this usually means that a port of the program doesn't
 407 # exist yet.
 408
 409 case "${host}" in
 410   i[[3456789]]86-*-msdosdjgpp*)
 411     noconfigdirs="$noconfigdirs tcl tk itcl"
 412     ;;
 413 esac
 414
 415
 416 AC_ARG_ENABLE(libquadmath,
 417 AS_HELP_STRING([--disable-libquadmath],
 418   [do not build libquadmath directory]),
 419 ENABLE_LIBQUADMATH=$enableval,
 420 ENABLE_LIBQUADMATH=yes)
 421 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 422   noconfigdirs="$noconfigdirs target-libquadmath"
 423 fi
 424
 425
 426 AC_ARG_ENABLE(libquadmath-support,
 427 AS_HELP_STRING([--disable-libquadmath-support],
 428   [disable libquadmath support for Fortran]),
 429 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 430 ENABLE_LIBQUADMATH_SUPPORT=yes)
 431 enable_libquadmath_support=
 432 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 433   enable_libquadmath_support=no
 434 fi
 435
 436
 437 AC_ARG_ENABLE(libada,
 438 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 439 ENABLE_LIBADA=$enableval,
 440 ENABLE_LIBADA=yes)
 441 if test "${ENABLE_LIBADA}" != "yes" ; then
 442   noconfigdirs="$noconfigdirs gnattools"
 443 fi
 444
 445 AC_ARG_ENABLE(libssp,
 446 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 447 ENABLE_LIBSSP=$enableval,
 448 ENABLE_LIBSSP=yes)
 449
 450 AC_ARG_ENABLE(libstdcxx,
 451 AS_HELP_STRING([--disable-libstdcxx],
 452   [do not build libstdc++-v3 directory]),
 453 ENABLE_LIBSTDCXX=$enableval,
 454 ENABLE_LIBSTDCXX=default)
 455 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 456   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 457 fi]
 458
 459 # If this is accelerator compiler and its target is intelmic we enable
 460 # target liboffloadmic by default.  If this is compiler with offloading
 461 # for intelmic we enable host liboffloadmic by default.  Otherwise
 462 # liboffloadmic is disabled by default.
 463 AC_ARG_ENABLE([liboffloadmic],
 464 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 465                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 466 [case "$enableval" in
 467   no | host | target)
 468     enable_liboffloadmic=$enableval ;;
 469   *)
 470     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 471 esac],
 472 [if test x"$enable_as_accelerator_for" != x; then
 473   case "${target}" in
 474     *-intelmic-* | *-intelmicemul-*)
 475       enable_liboffloadmic=target
 476       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 477       ;;
 478     *)
 479       enable_liboffloadmic=no
 480       ;;
 481   esac
 482 else
 483   case "${enable_offload_targets}" in
 484     *-intelmic-* | *-intelmicemul-*)
 485       enable_liboffloadmic=host
 486       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 487       ;;
 488     *)
 489       enable_liboffloadmic=no
 490       ;;
 491     esac
 492 fi])
 493 AC_SUBST(extra_liboffloadmic_configure_flags)
 494
 495 # Save it here so that, even in case of --enable-libgcj, if the Java
 496 # front-end isn't enabled, we still get libgcj disabled.
 497 libgcj_saved=$libgcj
 498 case $enable_libgcj in
 499 yes)
 500   # If we reset it here, it won't get added to noconfigdirs in the
 501   # target-specific build rules, so it will be forcibly enabled
 502   # (unless the Java language itself isn't enabled).
 503   libgcj=
 504   ;;
 505 no)
 506   # Make sure we get it printed in the list of not supported target libs.
 507   # Don't disable libffi, though, other languages use it.
 508   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 509   # Clear libgcj_saved so that even if java is enabled libffi won't be
 510   # built.
 511   libgcj_saved=
 512   ;;
 513 esac
 514
 515 AC_ARG_ENABLE(static-libjava,
 516 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 517                 [build static libjava @<:@default=no@:>@])],
 518 ENABLE_STATIC_LIBJAVA=$enableval,
 519 ENABLE_STATIC_LIBJAVA=no)
 520 enable_static_libjava=
 521 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 522   enable_static_libjava=yes
 523 fi
 524
 525 if test x$enable_static_libjava != xyes ; then
 526   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 527 fi
 528 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 529
 530 # Disable libgomp on non POSIX hosted systems.
 531 if test x$enable_libgomp = x ; then
 532     # Enable libgomp by default on hosted POSIX systems.
 533     case "${target}" in
 534     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 535         ;;
 536     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 537         ;;
 538     *-*-solaris2* | *-*-hpux11*)
 539         ;;
 540     *-*-darwin* | *-*-aix*)
 541         ;;
 542     *)
 543         noconfigdirs="$noconfigdirs target-libgomp"
 544         ;;
 545     esac
 546 fi
 547
 548 # Disable libatomic on unsupported systems.
 549 if test -d ${srcdir}/libatomic; then
 550     if test x$enable_libatomic = x; then
 551         AC_MSG_CHECKING([for libatomic support])
 552         if (srcdir=${srcdir}/libatomic; \
 553                 . ${srcdir}/configure.tgt; \
 554                 test -n "$UNSUPPORTED")
 555         then
 556             AC_MSG_RESULT([no])
 557             noconfigdirs="$noconfigdirs target-libatomic"
 558         else
 559             AC_MSG_RESULT([yes])
 560         fi
 561     fi
 562 fi
 563
 564 # Disable libcilkrts on unsupported systems.
 565 if test -d ${srcdir}/libcilkrts; then
 566     if test x$enable_libcilkrts = x; then
 567         AC_MSG_CHECKING([for libcilkrts support])
 568         if (srcdir=${srcdir}/libcilkrts; \
 569                 . ${srcdir}/configure.tgt; \
 570                 test -n "$UNSUPPORTED")
 571         then
 572             AC_MSG_RESULT([no])
 573             noconfigdirs="$noconfigdirs target-libcilkrts"
 574         else
 575             AC_MSG_RESULT([yes])
 576         fi
 577     fi
 578 fi
 579
 580 # Disable liboffloadmic on unsupported systems.
 581 if test -d ${srcdir}/liboffloadmic; then
 582     if test x$enable_liboffloadmic != xno; then
 583         AC_MSG_CHECKING([for liboffloadmic support])
 584         if (srcdir=${srcdir}/liboffloadmic; \
 585                 . ${srcdir}/configure.tgt; \
 586                 test -n "$UNSUPPORTED")
 587         then
 588             AC_MSG_RESULT([no])
 589             noconfigdirs="$noconfigdirs target-liboffloadmic"
 590         else
 591             AC_MSG_RESULT([yes])
 592         fi
 593     fi
 594 fi
 595
 596 # Disable libitm on unsupported systems.
 597 if test -d ${srcdir}/libitm; then
 598     if test x$enable_libitm = x; then
 599         AC_MSG_CHECKING([for libitm support])
 600         if (srcdir=${srcdir}/libitm; \
 601                 . ${srcdir}/configure.tgt; \
 602                 test -n "$UNSUPPORTED")
 603         then
 604             AC_MSG_RESULT([no])
 605             noconfigdirs="$noconfigdirs target-libitm"
 606         else
 607             AC_MSG_RESULT([yes])
 608         fi
 609     fi
 610 fi
 611
 612 # Disable libsanitizer on unsupported systems.
 613 if test -d ${srcdir}/libsanitizer; then
 614     if test x$enable_libsanitizer = x; then
 615         AC_MSG_CHECKING([for libsanitizer support])
 616         if (srcdir=${srcdir}/libsanitizer; \
 617                 . ${srcdir}/configure.tgt; \
 618                 test -n "$UNSUPPORTED")
 619         then
 620             AC_MSG_RESULT([no])
 621             noconfigdirs="$noconfigdirs target-libsanitizer"
 622         else
 623             AC_MSG_RESULT([yes])
 624         fi
 625     fi
 626 fi
 627
 628 # Disable libvtv on unsupported systems.
 629 if test -d ${srcdir}/libvtv; then
 630     if test x$enable_libvtv = x; then
 631         AC_MSG_CHECKING([for libvtv support])
 632         if (srcdir=${srcdir}/libvtv; \
 633                 . ${srcdir}/configure.tgt; \
 634                 test "$VTV_SUPPORTED" != "yes")
 635         then
 636             AC_MSG_RESULT([no])
 637             noconfigdirs="$noconfigdirs target-libvtv"
 638         else
 639             AC_MSG_RESULT([yes])
 640         fi
 641     fi
 642 fi
 643
 644
 645 # Enable libmpx on supported systems by request.
 646 if test -d ${srcdir}/libmpx; then
 647     if test x$enable_libmpx = xyes; then
 648        AC_MSG_CHECKING([for libmpx support])
 649        if (srcdir=${srcdir}/libmpx; \
 650                . ${srcdir}/configure.tgt; \
 651                test "$LIBMPX_SUPPORTED" != "yes")
 652        then
 653            AC_MSG_RESULT([no])
 654            noconfigdirs="$noconfigdirs target-libmpx"
 655        else
 656            AC_MSG_RESULT([yes])
 657        fi
 658     else
 659        noconfigdirs="$noconfigdirs target-libmpx"
 660     fi
 661 fi
 662
 663
 664
 665 # Disable libquadmath for some systems.
 666 case "${target}" in
 667   avr-*-*)
 668     noconfigdirs="$noconfigdirs target-libquadmath"
 669     ;;
 670   # libquadmath is unused on AIX and libquadmath build process use of
 671   # LD_LIBRARY_PATH can break AIX bootstrap.
 672   powerpc-*-aix* | rs6000-*-aix*)
 673     noconfigdirs="$noconfigdirs target-libquadmath"
 674     ;;
 675 esac
 676
 677 # Disable libssp for some systems.
 678 case "${target}" in
 679   avr-*-*)
 680     # No hosted I/O support.
 681     noconfigdirs="$noconfigdirs target-libssp"
 682     ;;
 683   powerpc-*-aix* | rs6000-*-aix*)
 684     noconfigdirs="$noconfigdirs target-libssp"
 685     ;;
 686   rl78-*-*)
 687     # libssp uses a misaligned load to trigger a fault, but the RL78
 688     # doesn't fault for those - instead, it gives a build-time error
 689     # for explicit misaligned loads.
 690     noconfigdirs="$noconfigdirs target-libssp"
 691     ;;
 692   visium-*-*)
 693     # No hosted I/O support.
 694     noconfigdirs="$noconfigdirs target-libssp"
 695     ;;
 696 esac
 697
 698 # Disable libstdc++-v3 for some systems.
 699 # Allow user to override this if they pass --enable-libstdc++-v3
 700 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 701   case "${target}" in
 702     *-*-vxworks*)
 703       # VxWorks uses the Dinkumware C++ library.
 704       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 705       ;;
 706     arm*-wince-pe*)
 707       # the C++ libraries don't build on top of CE's C libraries
 708       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 709       ;;
 710     avr-*-*)
 711       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 712       ;;
 713     ft32-*-*)
 714       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 715       ;;
 716   esac
 717 fi
 718
 719 # Disable Fortran for some systems.
 720 case "${target}" in
 721   mmix-*-*)
 722     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 723     unsupported_languages="$unsupported_languages fortran"
 724     ;;
 725 esac
 726
 727 # Disable Java if libffi is not supported.
 728 case "${target}" in
 729   aarch64-*-*)
 730     ;;
 731   alpha*-*-*)
 732     ;;
 733   arm*-*-*)
 734     ;;
 735   cris-*-*)
 736     ;;
 737   frv-*-*)
 738     ;;
 739   hppa*-*-linux*)
 740     ;;
 741   hppa*-*-hpux*)
 742     ;;
 743   i?86-*-*)
 744     ;;
 745   ia64*-*-*)
 746     ;;
 747   m32r*-*-*)
 748     ;;
 749   m68k-*-*)
 750     ;;
 751   mips*-*-rtems*)
 752     ;;
 753   mips*-*-linux*)
 754     ;;
 755   powerpc*-*-linux*)
 756     ;;
 757   powerpc-*-darwin*)
 758     ;;
 759   powerpc-*-aix* | rs6000-*-aix*)
 760     ;;
 761   powerpc-*-freebsd*)
 762     ;;
 763   powerpc64-*-freebsd*)
 764     ;;
 765   powerpc*-*-rtems*)
 766     ;;
 767   s390-*-* | s390x-*-*)
 768     ;;
 769   sh-*-* | sh[[34]]*-*-*)
 770     ;;
 771   sh64-*-* | sh5*-*-*)
 772     ;;
 773   sparc*-*-*)
 774     ;;
 775   x86_64-*-*)
 776     ;;
 777   *-*-*)
 778     unsupported_languages="$unsupported_languages java"
 779     ;;
 780 esac
 781
 782 # Disable Java, libgcj or related libraries for some systems.
 783 case "${target}" in
 784   powerpc-*-darwin*)
 785     ;;
 786   i[[3456789]]86-*-darwin*)
 787     ;;
 788   x86_64-*-darwin[[912]]*)
 789     ;;
 790   *-*-darwin*)
 791     noconfigdirs="$noconfigdirs ${libgcj}"
 792     ;;
 793   *-*-netware*)
 794     noconfigdirs="$noconfigdirs ${libgcj}"
 795     ;;
 796   *-*-rtems*)
 797     noconfigdirs="$noconfigdirs ${libgcj}"
 798     ;;
 799   *-*-tpf*)
 800     noconfigdirs="$noconfigdirs ${libgcj}"
 801     ;;
 802   *-*-uclinux*)
 803     noconfigdirs="$noconfigdirs ${libgcj}"
 804     ;;
 805   *-*-vxworks*)
 806     noconfigdirs="$noconfigdirs ${libgcj}"
 807     ;;
 808   alpha*-*-*vms*)
 809     noconfigdirs="$noconfigdirs ${libgcj}"
 810     ;;
 811   arm*-*-freebsd*)
 812     noconfigdirs="$noconfigdirs ${libgcj}"
 813     ;;
 814   arm-wince-pe)
 815     noconfigdirs="$noconfigdirs ${libgcj}"
 816     ;;
 817   arm*-*-symbianelf*)
 818     noconfigdirs="$noconfigdirs ${libgcj}"
 819     ;;
 820   bfin-*-*)
 821     noconfigdirs="$noconfigdirs target-boehm-gc"
 822     ;;
 823   cris-*-* | crisv32-*-*)
 824     unsupported_languages="$unsupported_languages java"
 825     case "${target}" in
 826       *-*-linux*)
 827         ;;
 828       *) # See PR46792 regarding target-libffi.
 829         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 830     esac
 831     ;;
 832   hppa*64*-*-linux*)
 833     # In this case, it's because the hppa64-linux target is for
 834     # the kernel only at this point and has no libc, and thus no
 835     # headers, crt*.o, etc., all of which are needed by these.
 836     unsupported_languages="$unsupported_languages java"
 837     ;;
 838   hppa*64*-*-hpux*)
 839     noconfigdirs="$noconfigdirs ${libgcj}"
 840     ;;
 841   hppa*-hp-hpux11*)
 842     ;;
 843   hppa*-*-hpux*)
 844     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 845     # build on HP-UX 10.20.
 846     noconfigdirs="$noconfigdirs ${libgcj}"
 847     ;;
 848   ia64*-*-*vms*)
 849     noconfigdirs="$noconfigdirs ${libgcj}"
 850     ;;
 851   i[[3456789]]86-w64-mingw*)
 852     noconfigdirs="$noconfigdirs ${libgcj}"
 853     ;;
 854   i[[3456789]]86-*-mingw*)
 855     noconfigdirs="$noconfigdirs ${libgcj}"
 856     ;;
 857   x86_64-*-mingw*)
 858     noconfigdirs="$noconfigdirs ${libgcj}"
 859     ;;
 860   mmix-*-*)
 861     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 862     ;;
 863   powerpc-*-aix*)
 864     # copied from rs6000-*-* entry
 865     noconfigdirs="$noconfigdirs ${libgcj}"
 866     ;;
 867   rs6000-*-aix*)
 868     noconfigdirs="$noconfigdirs ${libgcj}"
 869     ;;
 870   *-*-lynxos*)
 871     noconfigdirs="$noconfigdirs ${libgcj}"
 872     ;;
 873 esac
 874
 875 # Disable the go frontend on systems where it is known to not work. Please keep
 876 # this in sync with contrib/config-list.mk.
 877 case "${target}" in
 878 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 879     unsupported_languages="$unsupported_languages go"
 880     ;;
 881 esac
 882
 883 # Disable libgo for some systems where it is known to not work.
 884 # For testing, you can easily override this with --enable-libgo.
 885 if test x$enable_libgo = x; then
 886     case "${target}" in
 887     *-*-darwin*)
 888         # PR 46986
 889         noconfigdirs="$noconfigdirs target-libgo"
 890         ;;
 891     *-*-cygwin* | *-*-mingw*)
 892         noconfigdirs="$noconfigdirs target-libgo"
 893         ;;
 894     *-*-aix*)
 895         noconfigdirs="$noconfigdirs target-libgo"
 896         ;;
 897     esac
 898 fi
 899
 900 # Default libgloss CPU subdirectory.
 901 libgloss_dir="$target_cpu"
 902
 903 case "${target}" in
 904   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 905     libgloss_dir=wince
 906     ;;
 907   aarch64*-*-* )
 908     libgloss_dir=aarch64
 909     ;;
 910   arm*-*-*)
 911     libgloss_dir=arm
 912     ;;
 913   cris-*-* | crisv32-*-*)
 914     libgloss_dir=cris
 915     ;;
 916   hppa*-*-*)
 917     libgloss_dir=pa
 918     ;;
 919   i[[3456789]]86-*-*)
 920     libgloss_dir=i386
 921     ;;
 922   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 923     libgloss_dir=m68hc11
 924     ;;
 925   m68*-*-* | fido-*-*)
 926     libgloss_dir=m68k
 927     ;;
 928   mips*-*-*)
 929     libgloss_dir=mips
 930     ;;
 931   powerpc*-*-*)
 932     libgloss_dir=rs6000
 933     ;;
 934   sparc*-*-*)
 935     libgloss_dir=sparc
 936     ;;
 937 esac
 938
 939 # Disable newlib and libgloss for various target OSes.
 940 case "${target}" in
 941   alpha*-dec-osf*)
 942     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 943     ;;
 944   i[[3456789]]86-*-linux*)
 945     # This section makes it possible to build newlib natively on linux.
 946     # If we are using a cross compiler then don't configure newlib.
 947     if test x${is_cross_compiler} != xno ; then
 948       noconfigdirs="$noconfigdirs target-newlib"
 949     fi
 950     noconfigdirs="$noconfigdirs target-libgloss"
 951     # If we are not using a cross compiler, do configure newlib.
 952     # Note however, that newlib will only be configured in this situation
 953     # if the --with-newlib option has been given, because otherwise
 954     # 'target-newlib' will appear in skipdirs.
 955     ;;
 956   i[[3456789]]86-*-rdos*)
 957     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 958     ;;
 959   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 960     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 961     ;;
 962   sparc-*-sunos4*)
 963     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 964     ;;
 965   *-*-aix*)
 966     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 967     ;;
 968   *-*-beos*)
 969     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 970     ;;
 971   *-*-chorusos)
 972     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 973     ;;
 974   *-*-dragonfly*)
 975     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 976     ;;
 977   *-*-freebsd*)
 978     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 979     ;;
 980   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 981     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 982     ;;
 983   *-*-lynxos*)
 984     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 985     ;;
 986   *-*-mingw*)
 987     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 988     ;;
 989   *-*-netbsd*)
 990     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 991     ;;
 992   *-*-netware*)
 993     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 994     ;;
 995   *-*-tpf*)
 996     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 997     ;;
 998   *-*-uclinux*)
 999     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1000     ;;
1001   *-*-vxworks*)
1002     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1003     ;;
1004 esac
1005
1006 case "${target}" in
1007   *-*-chorusos)
1008     ;;
1009   powerpc-*-darwin*)
1010     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1011     noconfigdirs="$noconfigdirs sim target-rda"
1012     ;;
1013   i[[3456789]]86-*-darwin*)
1014     noconfigdirs="$noconfigdirs ld gprof"
1015     noconfigdirs="$noconfigdirs sim target-rda"
1016     ;;
1017   x86_64-*-darwin[[912]]*)
1018     noconfigdirs="$noconfigdirs ld gas gprof"
1019     noconfigdirs="$noconfigdirs sim target-rda"
1020     ;;
1021   *-*-darwin*)
1022     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1023     noconfigdirs="$noconfigdirs sim target-rda"
1024     ;;
1025   *-*-dragonfly*)
1026     ;;
1027   *-*-freebsd*)
1028     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
1029         && test -f /usr/local/include/gmp.h; then
1030       with_gmp=/usr/local
1031     fi
1032     ;;
1033   *-*-kaos*)
1034     # Remove unsupported stuff on all kaOS configurations.
1035     noconfigdirs="$noconfigdirs target-libgloss"
1036     ;;
1037   *-*-netbsd*)
1038     ;;
1039   *-*-netware*)
1040     ;;
1041   *-*-rtems*)
1042     noconfigdirs="$noconfigdirs target-libgloss"
1043     # this is not caught below because this stanza matches earlier
1044     case $target in
1045       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
1046     esac
1047     ;;
1048     # The tpf target doesn't support gdb yet.
1049   *-*-tpf*)
1050     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1051     ;;
1052   *-*-uclinux*)
1053     noconfigdirs="$noconfigdirs target-rda"
1054     ;;
1055   *-*-vxworks*)
1056     ;;
1057   alpha*-dec-osf*)
1058     # ld works, but does not support shared libraries.
1059     # gas doesn't generate exception information.
1060     noconfigdirs="$noconfigdirs gas ld"
1061     ;;
1062   alpha*-*-*vms*)
1063     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1064     ;;
1065   alpha*-*-*)
1066     # newlib is not 64 bit ready
1067     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1068     ;;
1069   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1070     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1071     ;;
1072   arc-*-*|arceb-*-*)
1073     noconfigdirs="$noconfigdirs target-libgloss"
1074     ;;
1075   arm-*-pe*)
1076     noconfigdirs="$noconfigdirs target-libgloss"
1077     ;;
1078   arm-*-riscix*)
1079     noconfigdirs="$noconfigdirs ld target-libgloss"
1080     ;;
1081   avr-*-rtems*)
1082     ;;
1083   avr-*-*)
1084     if test x${with_avrlibc} != xno; then
1085       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1086     fi
1087     ;;
1088   c4x-*-* | tic4x-*-*)
1089     noconfigdirs="$noconfigdirs target-libgloss"
1090     ;;
1091   tic54x-*-*)
1092     noconfigdirs="$noconfigdirs target-libgloss gdb"
1093     ;;
1094   d10v-*-*)
1095     noconfigdirs="$noconfigdirs target-libgloss"
1096     ;;
1097   d30v-*-*)
1098     noconfigdirs="$noconfigdirs gdb"
1099     ;;
1100   fr30-*-elf*)
1101     noconfigdirs="$noconfigdirs gdb"
1102     ;;
1103   moxie-*-*)
1104     noconfigdirs="$noconfigdirs gprof"
1105     ;;
1106   h8300*-*-*)
1107     noconfigdirs="$noconfigdirs target-libgloss"
1108     ;;
1109   h8500-*-*)
1110     noconfigdirs="$noconfigdirs target-libgloss"
1111     ;;
1112   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1113     ;;
1114   hppa*64*-*-linux*)
1115     ;;
1116   hppa*-*-linux*)
1117     ;;
1118   hppa*-*-*elf* | \
1119   hppa*-*-lites* | \
1120   hppa*-*-openbsd* | \
1121   hppa*64*-*-*)
1122     ;;
1123   hppa*-hp-hpux11*)
1124     noconfigdirs="$noconfigdirs ld"
1125     ;;
1126   hppa*-*-pro*)
1127     ;;
1128   hppa*-*-*)
1129     noconfigdirs="$noconfigdirs ld"
1130     ;;
1131   i960-*-*)
1132     noconfigdirs="$noconfigdirs gdb"
1133     ;;
1134   ia64*-*-elf*)
1135     # No gdb support yet.
1136     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1137     ;;
1138   ia64*-**-hpux*)
1139     # No ld support yet.
1140     noconfigdirs="$noconfigdirs libgui itcl ld"
1141     ;;
1142   ia64*-*-*vms*)
1143     # No ld support yet.
1144     noconfigdirs="$noconfigdirs libgui itcl ld"
1145     ;;
1146   i[[3456789]]86-w64-mingw*)
1147     ;;
1148   i[[3456789]]86-*-mingw*)
1149     target_configdirs="$target_configdirs target-winsup"
1150     ;;
1151   *-*-cygwin*)
1152     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1153     noconfigdirs="$noconfigdirs target-libgloss"
1154     # always build newlib if winsup directory is present.
1155     if test -d "$srcdir/winsup/cygwin"; then
1156       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1157     elif test -d "$srcdir/newlib"; then
1158       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1159     fi
1160     ;;
1161   i[[3456789]]86-*-pe)
1162     noconfigdirs="$noconfigdirs target-libgloss"
1163     ;;
1164   i[[3456789]]86-*-sco3.2v5*)
1165     # The linker does not yet know about weak symbols in COFF,
1166     # and is not configured to handle mixed ELF and COFF.
1167     noconfigdirs="$noconfigdirs ld target-libgloss"
1168     ;;
1169   i[[3456789]]86-*-sco*)
1170     noconfigdirs="$noconfigdirs gprof target-libgloss"
1171     ;;
1172   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1173     noconfigdirs="$noconfigdirs target-libgloss"
1174     ;;
1175   i[[3456789]]86-*-sysv4*)
1176     noconfigdirs="$noconfigdirs target-libgloss"
1177     ;;
1178   i[[3456789]]86-*-beos*)
1179     noconfigdirs="$noconfigdirs gdb"
1180     ;;
1181   i[[3456789]]86-*-rdos*)
1182     noconfigdirs="$noconfigdirs gdb"
1183     ;;
1184   mmix-*-*)
1185     noconfigdirs="$noconfigdirs gdb"
1186     ;;
1187   mt-*-*)
1188     noconfigdirs="$noconfigdirs sim"
1189     ;;
1190   powerpc-*-aix*)
1191     # copied from rs6000-*-* entry
1192     noconfigdirs="$noconfigdirs gprof"
1193     ;;
1194   powerpc*-*-winnt* | powerpc*-*-pe*)
1195     target_configdirs="$target_configdirs target-winsup"
1196     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1197     # always build newlib.
1198     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1199     ;;
1200     # This is temporary until we can link against shared libraries
1201   powerpcle-*-solaris*)
1202     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1203     ;;
1204   powerpc-*-beos*)
1205     noconfigdirs="$noconfigdirs gdb"
1206     ;;
1207   rs6000-*-lynxos*)
1208     noconfigdirs="$noconfigdirs gprof"
1209     ;;
1210   rs6000-*-aix*)
1211     noconfigdirs="$noconfigdirs gprof"
1212     ;;
1213   rs6000-*-*)
1214     noconfigdirs="$noconfigdirs gprof"
1215     ;;
1216   m68k-apollo-*)
1217     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1218     ;;
1219   microblaze*)
1220     noconfigdirs="$noconfigdirs gprof"
1221     ;;
1222   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1223     if test x$with_newlib = xyes; then
1224       noconfigdirs="$noconfigdirs gprof"
1225     fi
1226     ;;
1227   mips*-*-irix5*)
1228     noconfigdirs="$noconfigdirs gprof target-libgloss"
1229     ;;
1230   mips*-*-irix6*)
1231     noconfigdirs="$noconfigdirs gprof target-libgloss"
1232     ;;
1233   mips*-*-bsd*)
1234     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1235     ;;
1236   mips*-*-linux*)
1237     ;;
1238   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1239   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1240     noconfigdirs="$noconfigdirs ld gas gprof"
1241     ;;
1242   mips*-*-*)
1243     noconfigdirs="$noconfigdirs gprof"
1244     ;;
1245   nds32*-*-*)
1246     noconfigdirs="$noconfigdirs gdb"
1247     ;;
1248   nvptx*-*-*)
1249     # nvptx is just a compiler
1250     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1251     ;;
1252   or1k*-*-*)
1253     noconfigdirs="$noconfigdirs gdb"
1254     ;;
1255   sh-*-* | sh64-*-*)
1256     case "${target}" in
1257       sh*-*-elf)
1258          ;;
1259       *)
1260          noconfigdirs="$noconfigdirs target-libgloss" ;;
1261     esac
1262     ;;
1263   sparc-*-sunos4*)
1264     if test x${is_cross_compiler} = xno ; then
1265            use_gnu_ld=no
1266     fi
1267     ;;
1268   tic6x-*-*)
1269     noconfigdirs="$noconfigdirs sim"
1270     ;;
1271   tilepro*-*-* | tilegx*-*-*)
1272     noconfigdirs="$noconfigdirs sim"
1273     ;;
1274   v810-*-*)
1275     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1276     ;;
1277   vax-*-*)
1278     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1279     ;;
1280 esac
1281
1282 # If we aren't building newlib, then don't build libgloss, since libgloss
1283 # depends upon some newlib header files.
1284 case "${noconfigdirs}" in
1285   *target-libgloss*) ;;
1286   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1287 esac
1288
1289 # Work in distributions that contain no compiler tools, like Autoconf.
1290 host_makefile_frag=/dev/null
1291 if test -d ${srcdir}/config ; then
1292 case "${host}" in
1293   i[[3456789]]86-*-msdosdjgpp*)
1294     host_makefile_frag="config/mh-djgpp"
1295     ;;
1296   *-cygwin*)
1297     ACX_CHECK_CYGWIN_CAT_WORKS
1298     host_makefile_frag="config/mh-cygwin"
1299     ;;
1300   *-mingw*)
1301     host_makefile_frag="config/mh-mingw"
1302     ;;
1303   alpha*-linux*)
1304     host_makefile_frag="config/mh-alpha-linux"
1305     ;;
1306   hppa*-hp-hpux10*)
1307     host_makefile_frag="config/mh-pa-hpux10"
1308     ;;
1309   hppa*-hp-hpux*)
1310     host_makefile_frag="config/mh-pa"
1311     ;;
1312   hppa*-*)
1313     host_makefile_frag="config/mh-pa"
1314     ;;
1315   *-*-darwin*)
1316     host_makefile_frag="config/mh-darwin"
1317     ;;
1318   powerpc-*-aix*)
1319     host_makefile_frag="config/mh-ppc-aix"
1320     ;;
1321   rs6000-*-aix*)
1322     host_makefile_frag="config/mh-ppc-aix"
1323     ;;
1324 esac
1325 fi
1326
1327 if test "${build}" != "${host}" ; then
1328   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1329   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1330   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1331   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1332   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1333   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1334   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1335   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1336   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1337   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1338   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1339   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1340   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1341 else
1342   AR_FOR_BUILD="\$(AR)"
1343   AS_FOR_BUILD="\$(AS)"
1344   CC_FOR_BUILD="\$(CC)"
1345   CXX_FOR_BUILD="\$(CXX)"
1346   GCJ_FOR_BUILD="\$(GCJ)"
1347   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1348   GOC_FOR_BUILD="\$(GOC)"
1349   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1350   LD_FOR_BUILD="\$(LD)"
1351   NM_FOR_BUILD="\$(NM)"
1352   RANLIB_FOR_BUILD="\$(RANLIB)"
1353   WINDRES_FOR_BUILD="\$(WINDRES)"
1354   WINDMC_FOR_BUILD="\$(WINDMC)"
1355 fi
1356
1357 AC_PROG_CC
1358 AC_PROG_CXX
1359
1360 # We must set the default linker to the linker used by gcc for the correct
1361 # operation of libtool.  If LD is not defined and we are using gcc, try to
1362 # set the LD default to the ld used by gcc.
1363 if test -z "$LD"; then
1364   if test "$GCC" = yes; then
1365     case $build in
1366     *-*-mingw*)
1367       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1368     *)
1369       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1370     esac
1371     case $gcc_prog_ld in
1372     # Accept absolute paths.
1373     [[\\/]* | [A-Za-z]:[\\/]*)]
1374       LD="$gcc_prog_ld" ;;
1375     esac
1376   fi
1377 fi
1378
1379 # Check whether -static-libstdc++ -static-libgcc is supported.
1380 have_static_libs=no
1381 if test "$GCC" = yes; then
1382   saved_LDFLAGS="$LDFLAGS"
1383
1384   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1385   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1386   AC_LANG_PUSH(C++)
1387   AC_LINK_IFELSE([
1388 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1389 #error -static-libstdc++ not implemented
1390 #endif
1391 int main() {}],
1392     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1393     [AC_MSG_RESULT([no])])
1394   AC_LANG_POP(C++)
1395
1396   LDFLAGS="$saved_LDFLAGS"
1397 fi
1398
1399 ACX_PROG_GNAT
1400 ACX_PROG_CMP_IGNORE_INITIAL
1401
1402 AC_ARG_ENABLE([bootstrap],
1403 [AS_HELP_STRING([--enable-bootstrap],
1404                 [enable bootstrapping @<:@yes if native build@:>@])],,
1405 enable_bootstrap=default)
1406
1407 # Issue errors and warnings for invalid/strange bootstrap combinations.
1408 if test -r $srcdir/gcc/configure; then
1409   have_compiler=yes
1410 else
1411   have_compiler=no
1412 fi
1413
1414 case "$have_compiler:$host:$target:$enable_bootstrap" in
1415   *:*:*:no) ;;
1416
1417   # Default behavior.  Enable bootstrap if we have a compiler
1418   # and we are in a native configuration.
1419   yes:$build:$build:default)
1420     enable_bootstrap=yes ;;
1421
1422   *:*:*:default)
1423     enable_bootstrap=no ;;
1424
1425   # We have a compiler and we are in a native configuration, bootstrap is ok
1426   yes:$build:$build:yes)
1427     ;;
1428
1429   # Other configurations, but we have a compiler.  Assume the user knows
1430   # what he's doing.
1431   yes:*:*:yes)
1432     AC_MSG_WARN([trying to bootstrap a cross compiler])
1433     ;;
1434
1435   # No compiler: if they passed --enable-bootstrap explicitly, fail
1436   no:*:*:yes)
1437     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1438
1439   # Fail if wrong command line
1440   *)
1441     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1442     ;;
1443 esac
1444
1445 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1446 # C++98 compiler can still start the bootstrap.
1447 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1448   CXX="$CXX -std=gnu++98"
1449 fi
1450
1451 # Used for setting $lt_cv_objdir
1452 _LT_CHECK_OBJDIR
1453
1454 # Check for GMP, MPFR and MPC
1455 gmplibs="-lmpc -lmpfr -lgmp"
1456 gmpinc=
1457 have_gmp=no
1458
1459 # Specify a location for mpc
1460 # check for this first so it ends up on the link line before mpfr.
1461 AC_ARG_WITH(mpc,
1462 [AS_HELP_STRING([--with-mpc=PATH],
1463                 [specify prefix directory for installed MPC package.
1464                  Equivalent to --with-mpc-include=PATH/include
1465                  plus --with-mpc-lib=PATH/lib])])
1466 AC_ARG_WITH(mpc-include,
1467 [AS_HELP_STRING([--with-mpc-include=PATH],
1468                 [specify directory for installed MPC include files])])
1469 AC_ARG_WITH(mpc-lib,
1470 [AS_HELP_STRING([--with-mpc-lib=PATH],
1471                 [specify directory for the installed MPC library])])
1472
1473 if test "x$with_mpc" != x; then
1474   gmplibs="-L$with_mpc/lib $gmplibs"
1475   gmpinc="-I$with_mpc/include $gmpinc"
1476 fi
1477 if test "x$with_mpc_include" != x; then
1478   gmpinc="-I$with_mpc_include $gmpinc"
1479 fi
1480 if test "x$with_mpc_lib" != x; then
1481   gmplibs="-L$with_mpc_lib $gmplibs"
1482 fi
1483 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1484   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1485   gmpinc='-I$$s/mpc/src '"$gmpinc"
1486   # Do not test the mpc version.  Assume that it is sufficient, since
1487   # it is in the source tree, and the library has not been built yet
1488   # but it would be included on the link line in the version check below
1489   # hence making the test fail.
1490   have_gmp=yes
1491 fi
1492
1493 # Specify a location for mpfr
1494 # check for this first so it ends up on the link line before gmp.
1495 AC_ARG_WITH(mpfr-dir,
1496 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1497 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1498 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1499
1500 AC_ARG_WITH(mpfr,
1501 [AS_HELP_STRING([--with-mpfr=PATH],
1502                 [specify prefix directory for installed MPFR package.
1503                  Equivalent to --with-mpfr-include=PATH/include
1504                  plus --with-mpfr-lib=PATH/lib])])
1505 AC_ARG_WITH(mpfr-include,
1506 [AS_HELP_STRING([--with-mpfr-include=PATH],
1507                 [specify directory for installed MPFR include files])])
1508 AC_ARG_WITH(mpfr-lib,
1509 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1510                 [specify directory for the installed MPFR library])])
1511
1512 if test "x$with_mpfr" != x; then
1513   gmplibs="-L$with_mpfr/lib $gmplibs"
1514   gmpinc="-I$with_mpfr/include $gmpinc"
1515 fi
1516 if test "x$with_mpfr_include" != x; then
1517   gmpinc="-I$with_mpfr_include $gmpinc"
1518 fi
1519 if test "x$with_mpfr_lib" != x; then
1520   gmplibs="-L$with_mpfr_lib $gmplibs"
1521 fi
1522 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1523   # MPFR v3.1.0 moved the sources into a src sub-directory.
1524   if test -d ${srcdir}/mpfr/src; then
1525     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1526     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1527     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1528   else
1529     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1530     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1531     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1532   fi
1533   # Do not test the mpfr version.  Assume that it is sufficient, since
1534   # it is in the source tree, and the library has not been built yet
1535   # but it would be included on the link line in the version check below
1536   # hence making the test fail.
1537   have_gmp=yes
1538 fi
1539
1540 # Specify a location for gmp
1541 AC_ARG_WITH(gmp-dir,
1542 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1543 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1544 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1545
1546 AC_ARG_WITH(gmp,
1547 [AS_HELP_STRING([--with-gmp=PATH],
1548                 [specify prefix directory for the installed GMP package.
1549                  Equivalent to --with-gmp-include=PATH/include
1550                  plus --with-gmp-lib=PATH/lib])])
1551 AC_ARG_WITH(gmp-include,
1552 [AS_HELP_STRING([--with-gmp-include=PATH],
1553                 [specify directory for installed GMP include files])])
1554 AC_ARG_WITH(gmp-lib,
1555 [AS_HELP_STRING([--with-gmp-lib=PATH],
1556                 [specify directory for the installed GMP library])])
1557
1558
1559 if test "x$with_gmp" != x; then
1560   gmplibs="-L$with_gmp/lib $gmplibs"
1561   gmpinc="-I$with_gmp/include $gmpinc"
1562 fi
1563 if test "x$with_gmp_include" != x; then
1564   gmpinc="-I$with_gmp_include $gmpinc"
1565 fi
1566 if test "x$with_gmp_lib" != x; then
1567   gmplibs="-L$with_gmp_lib $gmplibs"
1568 fi
1569 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1570   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1571   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1572   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1573   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1574   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1575   # Do not test the gmp version.  Assume that it is sufficient, since
1576   # it is in the source tree, and the library has not been built yet
1577   # but it would be included on the link line in the version check below
1578   # hence making the test fail.
1579   have_gmp=yes
1580 fi
1581
1582 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1583   have_gmp=yes
1584   saved_CFLAGS="$CFLAGS"
1585   CFLAGS="$CFLAGS $gmpinc"
1586   # Check for the recommended and required versions of GMP.
1587   AC_MSG_CHECKING([for the correct version of gmp.h])
1588   AC_TRY_COMPILE([#include "gmp.h"],[
1589   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1590   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1591   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1592   choke me
1593   #endif
1594   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1595   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1596   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1597   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1598   choke me
1599   #endif
1600   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1601    [AC_MSG_RESULT([no]); have_gmp=no])
1602
1603   # If we have GMP, check the MPFR version.
1604   if test x"$have_gmp" = xyes; then
1605     # Check for the recommended and required versions of MPFR.
1606     AC_MSG_CHECKING([for the correct version of mpfr.h])
1607     AC_TRY_COMPILE([#include <gmp.h>
1608     #include <mpfr.h>],[
1609     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1610     choke me
1611     #endif
1612     ], [AC_TRY_COMPILE([#include <gmp.h>
1613     #include <mpfr.h>],[
1614     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1615     choke me
1616     #endif
1617     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1618      [AC_MSG_RESULT([no]); have_gmp=no])
1619   fi
1620
1621   # Check for the MPC header version.
1622   if test x"$have_gmp" = xyes ; then
1623     # Check for the recommended and required versions of MPC.
1624     AC_MSG_CHECKING([for the correct version of mpc.h])
1625     AC_TRY_COMPILE([#include <mpc.h>],[
1626     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1627     choke me
1628     #endif
1629     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1630     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1631     choke me
1632     #endif
1633     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1634      [AC_MSG_RESULT([no]); have_gmp=no])
1635   fi
1636
1637   # Now check the MPFR library.
1638   if test x"$have_gmp" = xyes; then
1639     saved_LIBS="$LIBS"
1640     LIBS="$LIBS $gmplibs"
1641     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1642     AC_TRY_LINK([#include <mpc.h>],[
1643     mpfr_t n;
1644     mpfr_t x;
1645     mpc_t c;
1646     int t;
1647     mpfr_init (n);
1648     mpfr_init (x);
1649     mpfr_atan2 (n, n, x, GMP_RNDN);
1650     mpfr_erfc (n, x, GMP_RNDN);
1651     mpfr_subnormalize (x, t, GMP_RNDN);
1652     mpfr_clear(n);
1653     mpfr_clear(x);
1654     mpc_init2 (c, 53);
1655     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1656     mpc_cosh (c, c, MPC_RNDNN);
1657     mpc_pow (c, c, c, MPC_RNDNN);
1658     mpc_acosh (c, c, MPC_RNDNN);
1659     mpc_clear (c);
1660     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1661     LIBS="$saved_LIBS"
1662   fi
1663
1664   CFLAGS="$saved_CFLAGS"
1665
1666 # The library versions listed in the error message below should match
1667 # the HARD-minimums enforced above.
1668   if test x$have_gmp != xyes; then
1669     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1670 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1671 their locations.  Source code for these libraries can be found at
1672 their respective hosting sites as well as at
1673 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1674 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1675 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1676 make sure that you have installed both the libraries and the header
1677 files.  They may be located in separate packages.])
1678   fi
1679 fi
1680
1681 # Flags needed for both GMP, MPFR and/or MPC.
1682 AC_SUBST(gmplibs)
1683 AC_SUBST(gmpinc)
1684 AC_SUBST(extra_mpfr_configure_flags)
1685 AC_SUBST(extra_mpc_gmp_configure_flags)
1686 AC_SUBST(extra_mpc_mpfr_configure_flags)
1687 AC_SUBST(extra_isl_gmp_configure_flags)
1688
1689 # Allow host libstdc++ to be specified for static linking with PPL.
1690 AC_ARG_WITH(host-libstdcxx,
1691 [AS_HELP_STRING([--with-host-libstdcxx=L],
1692                 [use linker arguments L to link with libstdc++
1693                  when linking with PPL])])
1694
1695 case $with_host_libstdcxx in
1696   no|yes)
1697     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1698     ;;
1699 esac
1700
1701 # Libraries to use for stage1 or when not bootstrapping.
1702 AC_ARG_WITH(stage1-libs,
1703 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1704 [if test "$withval" = "no" -o "$withval" = "yes"; then
1705    stage1_libs=
1706  else
1707    stage1_libs=$withval
1708  fi],
1709 [stage1_libs=$with_host_libstdcxx])
1710 AC_SUBST(stage1_libs)
1711
1712 # Linker flags to use for stage1 or when not bootstrapping.
1713 AC_ARG_WITH(stage1-ldflags,
1714 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1715 [if test "$withval" = "no" -o "$withval" = "yes"; then
1716    stage1_ldflags=
1717  else
1718    stage1_ldflags=$withval
1719  fi],
1720 [stage1_ldflags=
1721  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1722  # if supported.  But if the user explicitly specified the libraries to use,
1723  # trust that they are doing what they want.
1724  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1725    stage1_ldflags="-static-libstdc++ -static-libgcc"
1726  fi])
1727 AC_SUBST(stage1_ldflags)
1728
1729 # Libraries to use for stage2 and later builds.  This defaults to the
1730 # argument passed to --with-host-libstdcxx.
1731 AC_ARG_WITH(boot-libs,
1732 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1733 [if test "$withval" = "no" -o "$withval" = "yes"; then
1734    poststage1_libs=
1735  else
1736    poststage1_libs=$withval
1737  fi],
1738 [poststage1_libs=$with_host_libstdcxx])
1739 AC_SUBST(poststage1_libs)
1740
1741 # Linker flags to use for stage2 and later builds.
1742 AC_ARG_WITH(boot-ldflags,
1743 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1744                 [linker flags for stage2 and later])],
1745 [if test "$withval" = "no" -o "$withval" = "yes"; then
1746    poststage1_ldflags=
1747  else
1748    poststage1_ldflags=$withval
1749  fi],
1750 [poststage1_ldflags=
1751  # In stages 2 and 3, default to linking libstdc++ and libgcc
1752  # statically.  But if the user explicitly specified the libraries to
1753  # use, trust that they are doing what they want.
1754  if test "$poststage1_libs" = ""; then
1755    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1756  fi])
1757 AC_SUBST(poststage1_ldflags)
1758
1759 # GCC GRAPHITE dependency ISL.
1760 # Basic setup is inlined here, actual checks are in config/isl.m4
1761
1762 AC_ARG_WITH(isl,
1763   [AS_HELP_STRING(
1764    [--with-isl=PATH],
1765    [Specify prefix directory for the installed ISL package.
1766     Equivalent to --with-isl-include=PATH/include
1767     plus --with-isl-lib=PATH/lib])])
1768
1769 # Treat --without-isl as a request to disable
1770 # GRAPHITE support and skip all following checks.
1771 if test "x$with_isl" != "xno"; then
1772   # Check for ISL
1773   dnl Provide configure switches and initialize islinc & isllibs
1774   dnl with user input.
1775   ISL_INIT_FLAGS
1776   dnl The versions of ISL that work for Graphite
1777   ISL_CHECK_VERSION()
1778   dnl Only execute fail-action, if ISL has been requested.
1779   ISL_IF_FAILED([
1780     AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
1781 fi
1782
1783 # If the ISL check failed, disable builds of in-tree variant of ISL
1784 if test "x$with_isl" = xno ||
1785    test "x$gcc_cv_isl" = xno; then
1786   noconfigdirs="$noconfigdirs isl"
1787   islinc=
1788 fi
1789
1790 AC_SUBST(isllibs)
1791 AC_SUBST(islinc)
1792
1793 # Check for LTO support.
1794 AC_ARG_ENABLE(lto,
1795 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1796 enable_lto=$enableval,
1797 enable_lto=yes; default_enable_lto=yes)
1798
1799 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1800   build_lto_plugin=yes
1801 ],[if test x"$default_enable_lto" = x"yes" ; then
1802     case $target in
1803       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1804       # On other non-ELF platforms, LTO has yet to be validated.
1805       *) enable_lto=no ;;
1806     esac
1807   else
1808   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1809   # It would also be nice to check the binutils support, but we don't
1810   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1811   # warn during gcc/ subconfigure; unless you're bootstrapping with
1812   # -flto it won't be needed until after installation anyway.
1813     case $target in
1814       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1815       *) if test x"$enable_lto" = x"yes"; then
1816         AC_MSG_ERROR([LTO support is not enabled for this target.])
1817         fi
1818       ;;
1819     esac
1820   fi
1821   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1822   # Build it unless LTO was explicitly disabled.
1823   case $target in
1824     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1825     *) ;;
1826   esac
1827 ])
1828
1829 AC_ARG_ENABLE(linker-plugin-configure-flags,
1830   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1831     [additional flags for configuring linker plugins @<:@none@:>@])],
1832   extra_linker_plugin_configure_flags=$enableval,
1833   extra_linker_plugin_configure_flags=)
1834 AC_SUBST(extra_linker_plugin_configure_flags)
1835 AC_ARG_ENABLE(linker-plugin-flags,
1836   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1837     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1838   extra_linker_plugin_flags=$enableval,
1839   extra_linker_plugin_flags=)
1840 AC_SUBST(extra_linker_plugin_flags)
1841
1842
1843 # By default, C and C++ are the only stage 1 languages.
1844 stage1_languages=,c,
1845
1846 # Target libraries that we bootstrap.
1847 bootstrap_target_libs=,target-libgcc,
1848
1849 # Figure out what language subdirectories are present.
1850 # Look if the user specified --enable-languages="..."; if not, use
1851 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1852 # go away some day.
1853 # NB:  embedded tabs in this IF block -- do not untabify
1854 if test -d ${srcdir}/gcc; then
1855   if test x"${enable_languages+set}" != xset; then
1856     if test x"${LANGUAGES+set}" = xset; then
1857       enable_languages="${LANGUAGES}"
1858         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1859     else
1860       enable_languages=all
1861     fi
1862   else
1863     if test x"${enable_languages}" = x ||
1864        test x"${enable_languages}" = xyes;
1865        then
1866       echo configure.in: --enable-languages needs at least one language argument 1>&2
1867       exit 1
1868     fi
1869   fi
1870   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1871
1872   # 'f95' is the old name for the 'fortran' language. We issue a warning
1873   # and make the substitution.
1874   case ,${enable_languages}, in
1875     *,f95,*)
1876       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1877       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1878       ;;
1879   esac
1880
1881   # If bootstrapping, C++ must be enabled.
1882   case ",$enable_languages,:$enable_bootstrap" in
1883     *,c++,*:*) ;;
1884     *:yes)
1885       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1886         enable_languages="${enable_languages},c++"
1887       else
1888         AC_MSG_ERROR([bootstrapping requires c++ sources])
1889       fi
1890       ;;
1891   esac
1892
1893   # First scan to see if an enabled language requires some other language.
1894   # We assume that a given config-lang.in will list all the language
1895   # front ends it requires, even if some are required indirectly.
1896   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1897     case ${lang_frag} in
1898       ..) ;;
1899       # The odd quoting in the next line works around
1900       # an apparent bug in bash 1.12 on linux.
1901       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1902       *)
1903         # From the config-lang.in, get $language, $lang_requires, and
1904         # $lang_requires_boot_languages.
1905         language=
1906         lang_requires=
1907         lang_requires_boot_languages=
1908         . ${lang_frag}
1909         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1910           case ,${enable_languages}, in
1911             *,$other,*) ;;
1912             *,all,*) ;;
1913             *,$language,*)
1914               echo " \`$other' language required by \`$language'; enabling" 1>&2
1915               enable_languages="${enable_languages},${other}"
1916               ;;
1917           esac
1918         done
1919         for other in ${lang_requires_boot_languages} ; do
1920           if test "$other" != "c"; then
1921             case ,${enable_stage1_languages}, in
1922               *,$other,*) ;;
1923               *,all,*) ;;
1924               *)
1925                 case ,${enable_languages}, in
1926                   *,$language,*)
1927                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1928                     enable_stage1_languages="$enable_stage1_languages,${other}"
1929                     ;;
1930                 esac
1931                 ;;
1932             esac
1933           fi
1934         done
1935         ;;
1936     esac
1937   done
1938
1939   new_enable_languages=,c,
1940
1941   # If LTO is enabled, add the LTO front end.
1942   if test "$enable_lto" = "yes" ; then
1943     case ,${enable_languages}, in
1944       *,lto,*) ;;
1945       *) enable_languages="${enable_languages},lto" ;;
1946     esac
1947     if test "${build_lto_plugin}" = "yes" ; then
1948       configdirs="$configdirs lto-plugin"
1949     fi
1950   fi
1951
1952   # If we're building an offloading compiler, add the LTO front end.
1953   if test x"$enable_as_accelerator_for" != x ; then
1954     case ,${enable_languages}, in
1955       *,lto,*) ;;
1956       *) enable_languages="${enable_languages},lto" ;;
1957     esac
1958   fi
1959
1960   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1961   potential_languages=,c,
1962
1963   enabled_target_libs=
1964   disabled_target_libs=
1965
1966   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1967     case ${lang_frag} in
1968       ..) ;;
1969       # The odd quoting in the next line works around
1970       # an apparent bug in bash 1.12 on linux.
1971       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1972       *)
1973         # From the config-lang.in, get $language, $target_libs,
1974         # $lang_dirs, $boot_language, and $build_by_default
1975         language=
1976         target_libs=
1977         lang_dirs=
1978         subdir_requires=
1979         boot_language=no
1980         build_by_default=yes
1981         . ${lang_frag}
1982         if test x${language} = x; then
1983           echo "${lang_frag} doesn't set \$language." 1>&2
1984           exit 1
1985         fi
1986
1987         if test "$language" = "c++"; then
1988           boot_language=yes
1989         fi
1990
1991         add_this_lang=no
1992         case ,${enable_languages}, in
1993           *,${language},*)
1994             # Language was explicitly selected; include it
1995             # unless it is C, which is enabled by default.
1996             if test "$language" != "c"; then
1997               add_this_lang=yes
1998             fi
1999             ;;
2000           *,all,*)
2001             # 'all' was selected, select it if it is a default language
2002             if test "$language" != "c"; then
2003               add_this_lang=${build_by_default}
2004             fi
2005             ;;
2006         esac
2007
2008         # Disable languages that need other directories if these aren't available.
2009         for i in $subdir_requires; do
2010           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2011           case ,${enable_languages}, in
2012             *,${language},*)
2013               # Specifically requested language; tell them.
2014               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2015               ;;
2016             *)
2017               # Silently disable.
2018               add_this_lang=unsupported
2019               ;;
2020           esac
2021         done
2022
2023         # Disable Ada if no preexisting GNAT is available.
2024         case ,${enable_languages},:${language}:${have_gnat} in
2025           *,${language},*:ada:no)
2026             # Specifically requested language; tell them.
2027             AC_MSG_ERROR([GNAT is required to build $language])
2028             ;;
2029           *:ada:no)
2030             # Silently disable.
2031             add_this_lang=unsupported
2032             ;;
2033         esac
2034
2035         # Disable a language that is unsupported by the target.
2036         case " $unsupported_languages " in
2037           *" $language "*)
2038             add_this_lang=unsupported
2039             ;;
2040         esac
2041
2042         case $add_this_lang in
2043           unsupported)
2044             # Remove language-dependent dirs.
2045             disabled_target_libs="$disabled_target_libs $target_libs"
2046             noconfigdirs="$noconfigdirs $lang_dirs"
2047             ;;
2048           no)
2049             # Remove language-dependent dirs; still show language as supported.
2050             disabled_target_libs="$disabled_target_libs $target_libs"
2051             noconfigdirs="$noconfigdirs $lang_dirs"
2052             potential_languages="${potential_languages}${language},"
2053             ;;
2054           yes)
2055             new_enable_languages="${new_enable_languages}${language},"
2056             potential_languages="${potential_languages}${language},"
2057             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2058             enabled_target_libs="$enabled_target_libs $target_libs"
2059             case "${boot_language}:,$enable_stage1_languages," in
2060               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2061                 # Add to (comma-separated) list of stage 1 languages.
2062                 case ",$stage1_languages," in
2063                   *,$language,* | ,yes, | ,all,) ;;
2064                   *) stage1_languages="${stage1_languages}${language}," ;;
2065                 esac
2066                 # We need to bootstrap any supporting libraries.
2067                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2068                 ;;
2069             esac
2070             ;;
2071         esac
2072         ;;
2073     esac
2074   done
2075
2076   # Add target libraries which are only needed for disabled languages
2077   # to noconfigdirs.
2078   if test -n "$disabled_target_libs"; then
2079     for dir in $disabled_target_libs; do
2080       case " $enabled_target_libs " in
2081       *" ${dir} "*) ;;
2082       *) noconfigdirs="$noconfigdirs $dir" ;;
2083       esac
2084     done
2085   fi
2086
2087   AC_ARG_ENABLE(stage1-languages,
2088   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2089                   [choose additional languages to build during
2090                   stage1.  Mostly useful for compiler development])],
2091   [case ,${enable_stage1_languages}, in
2092     ,no,|,,)
2093       # Set it to something that will have no effect in the loop below
2094       enable_stage1_languages=c ;;
2095     ,yes,)
2096       enable_stage1_languages=`echo $new_enable_languages | \
2097         sed -e "s/^,//" -e "s/,$//" ` ;;
2098     *,all,*)
2099       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2100         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2101   esac
2102
2103   # Add "good" languages from enable_stage1_languages to stage1_languages,
2104   # while "bad" languages go in missing_languages.  Leave no duplicates.
2105   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2106     case $potential_languages in
2107       *,$i,*)
2108         case $stage1_languages in
2109           *,$i,*) ;;
2110           *) stage1_languages="$stage1_languages$i," ;;
2111         esac ;;
2112       *)
2113         case $missing_languages in
2114           *,$i,*) ;;
2115           *) missing_languages="$missing_languages$i," ;;
2116         esac ;;
2117      esac
2118   done])
2119
2120   # Remove leading/trailing commas that were added for simplicity
2121   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2122   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2123   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2124   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2125
2126   if test "x$missing_languages" != x; then
2127     AC_MSG_ERROR([
2128 The following requested languages could not be built: ${missing_languages}
2129 Supported languages are: ${potential_languages}])
2130   fi
2131   if test "x$new_enable_languages" != "x$enable_languages"; then
2132     echo The following languages will be built: ${new_enable_languages}
2133     enable_languages="$new_enable_languages"
2134   fi
2135
2136   AC_SUBST(stage1_languages)
2137   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2138 fi
2139
2140 # Handle --disable-<component> generically.
2141 for dir in $configdirs $build_configdirs $target_configdirs ; do
2142   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2143   varname=`echo $dirname | sed -e s/+/_/g`
2144   if eval test x\${enable_${varname}} "=" xno ; then
2145     noconfigdirs="$noconfigdirs $dir"
2146   fi
2147 done
2148
2149 # Check for Boehm's garbage collector
2150 AC_ARG_ENABLE(objc-gc,
2151 [AS_HELP_STRING([--enable-objc-gc],
2152                 [enable use of Boehm's garbage collector with the
2153                  GNU Objective-C runtime])],
2154 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2155   *,objc,*:*:yes:*target-boehm-gc*)
2156     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2157     ;;
2158 esac])
2159
2160 # Make sure we only build Boehm's garbage collector if required.
2161 case ,${enable_languages},:${enable_objc_gc} in
2162   *,objc,*:yes)
2163     # Keep target-boehm-gc if requested for Objective-C.
2164     ;;
2165   *)
2166     # Otherwise remove target-boehm-gc depending on target-libjava.
2167     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2168       noconfigdirs="$noconfigdirs target-boehm-gc"
2169     fi
2170     ;;
2171 esac
2172
2173 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2174 case ,${enable_languages}, in
2175   *,c++,*)
2176     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2177     case "${noconfigdirs}" in
2178       *target-libstdc++-v3*)
2179         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2180         ;;
2181       *) ;;
2182     esac
2183     ;;
2184   *)
2185     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2186     ;;
2187 esac
2188
2189 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2190 # $build_configdirs and $target_configdirs.
2191 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2192
2193 notsupp=""
2194 for dir in . $skipdirs $noconfigdirs ; do
2195   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2196   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2197     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2198     if test -r $srcdir/$dirname/configure ; then
2199       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2200         true
2201       else
2202         notsupp="$notsupp $dir"
2203       fi
2204     fi
2205   fi
2206   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2207     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2208     if test -r $srcdir/$dirname/configure ; then
2209       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2210         true
2211       else
2212         notsupp="$notsupp $dir"
2213       fi
2214     fi
2215   fi
2216   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2217     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2218     if test -r $srcdir/$dirname/configure ; then
2219       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2220         true
2221       else
2222         notsupp="$notsupp $dir"
2223       fi
2224     fi
2225   fi
2226 done
2227
2228 # Quietly strip out all directories which aren't configurable in this tree.
2229 # This relies on all configurable subdirectories being autoconfiscated, which
2230 # is now the case.
2231 build_configdirs_all="$build_configdirs"
2232 build_configdirs=
2233 for i in ${build_configdirs_all} ; do
2234   j=`echo $i | sed -e s/build-//g`
2235   if test -f ${srcdir}/$j/configure ; then
2236     build_configdirs="${build_configdirs} $i"
2237   fi
2238 done
2239
2240 configdirs_all="$configdirs"
2241 configdirs=
2242 for i in ${configdirs_all} ; do
2243   if test -f ${srcdir}/$i/configure ; then
2244     configdirs="${configdirs} $i"
2245   fi
2246 done
2247
2248 target_configdirs_all="$target_configdirs"
2249 target_configdirs=
2250 for i in ${target_configdirs_all} ; do
2251   j=`echo $i | sed -e s/target-//g`
2252   if test -f ${srcdir}/$j/configure ; then
2253     target_configdirs="${target_configdirs} $i"
2254   fi
2255 done
2256
2257 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2258 # so we have to add it after the preceding checks.
2259 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2260 then
2261   case " $configdirs " in
2262     *" libiberty "*)
2263       # If we can build libiberty, we can also build libiberty-linker-plugin.
2264       configdirs="$configdirs libiberty-linker-plugin"
2265       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2266         --with-libiberty=../libiberty-linker-plugin";;
2267     *)
2268       AC_MSG_ERROR([libiberty missing]);;
2269   esac
2270 fi
2271
2272 # Sometimes we have special requirements for the host libiberty.
2273 extra_host_libiberty_configure_flags=
2274 case " $configdirs " in
2275   *" lto-plugin "* | *" libcc1 "*)
2276     # When these are to be built as shared libraries, the same applies to
2277     # libiberty.
2278     extra_host_libiberty_configure_flags=--enable-shared
2279     ;;
2280 esac
2281 AC_SUBST(extra_host_libiberty_configure_flags)
2282
2283 # Produce a warning message for the subdirs we can't configure.
2284 # This isn't especially interesting in the Cygnus tree, but in the individual
2285 # FSF releases, it's important to let people know when their machine isn't
2286 # supported by the one or two programs in a package.
2287
2288 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2289   # If $appdirs is non-empty, at least one of those directories must still
2290   # be configured, or we error out.  (E.g., if the gas release supports a
2291   # specified target in some subdirs but not the gas subdir, we shouldn't
2292   # pretend that all is well.)
2293   if test -n "$appdirs" ; then
2294     for dir in $appdirs ; do
2295       if test -r $dir/Makefile.in ; then
2296         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2297           appdirs=""
2298           break
2299         fi
2300         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2301           appdirs=""
2302           break
2303         fi
2304       fi
2305     done
2306     if test -n "$appdirs" ; then
2307       echo "*** This configuration is not supported by this package." 1>&2
2308       exit 1
2309     fi
2310   fi
2311   # Okay, some application will build, or we don't care to check.  Still
2312   # notify of subdirs not getting built.
2313   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2314   echo "    ${notsupp}" 1>&2
2315   echo "    (Any other directories should still work fine.)" 1>&2
2316 fi
2317
2318 case "$host" in
2319   *msdosdjgpp*)
2320     enable_gdbtk=no ;;
2321 esac
2322
2323 # To find our prefix, in gcc_cv_tool_prefix.
2324 ACX_TOOL_DIRS
2325
2326 copy_dirs=
2327
2328 AC_ARG_WITH([build-sysroot],
2329   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2330                   [use sysroot as the system root during the build])],
2331   [if test x"$withval" != x ; then
2332      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2333    fi],
2334   [SYSROOT_CFLAGS_FOR_TARGET=])
2335 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2336
2337 AC_ARG_WITH([debug-prefix-map],
2338   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2339                   [map A to B, C to D ... in debug information])],
2340   [if test x"$withval" != x; then
2341      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2342      for debug_map in $withval; do
2343        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2344      done
2345    fi],
2346   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2347 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2348
2349 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2350 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2351 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2352 # We want to ensure that TARGET libraries (which we know are built with
2353 # gcc) are built with "-O2 -g", so include those options when setting
2354 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2355 if test "x$CFLAGS_FOR_TARGET" = x; then
2356   if test "x${is_cross_compiler}" = xyes; then
2357     CFLAGS_FOR_TARGET="-g -O2"
2358   else
2359     CFLAGS_FOR_TARGET=$CFLAGS
2360     case " $CFLAGS " in
2361       *" -O2 "*) ;;
2362       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2363     esac
2364     case " $CFLAGS " in
2365       *" -g "* | *" -g3 "*) ;;
2366       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2367     esac
2368   fi
2369 fi
2370 AC_SUBST(CFLAGS_FOR_TARGET)
2371
2372 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2373   if test "x${is_cross_compiler}" = xyes; then
2374     CXXFLAGS_FOR_TARGET="-g -O2"
2375   else
2376     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2377     case " $CXXFLAGS " in
2378       *" -O2 "*) ;;
2379       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2380     esac
2381     case " $CXXFLAGS " in
2382       *" -g "* | *" -g3 "*) ;;
2383       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2384     esac
2385   fi
2386 fi
2387 AC_SUBST(CXXFLAGS_FOR_TARGET)
2388
2389 AC_SUBST(LDFLAGS_FOR_TARGET)
2390
2391 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2392 # the named directory are copied to $(tooldir)/sys-include.
2393 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2394   if test x${is_cross_compiler} = xno ; then
2395     echo 1>&2 '***' --with-headers is only supported when cross compiling
2396     exit 1
2397   fi
2398   if test x"${with_headers}" != xyes ; then
2399     x=${gcc_cv_tool_prefix}
2400     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2401   fi
2402 fi
2403
2404 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2405 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2406 # are permitted.
2407 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2408   if test x${is_cross_compiler} = xno ; then
2409     echo 1>&2 '***' --with-libs is only supported when cross compiling
2410     exit 1
2411   fi
2412   if test x"${with_libs}" != xyes ; then
2413     # Copy the libraries in reverse order, so that files in the first named
2414     # library override files in subsequent libraries.
2415     x=${gcc_cv_tool_prefix}
2416     for l in ${with_libs}; do
2417       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2418     done
2419   fi
2420 fi
2421
2422 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2423 #
2424 # This is done by determining whether or not the appropriate directory
2425 # is available, and by checking whether or not specific configurations
2426 # have requested that this magic not happen.
2427 #
2428 # The command line options always override the explicit settings in
2429 # configure.in, and the settings in configure.in override this magic.
2430 #
2431 # If the default for a toolchain is to use GNU as and ld, and you don't
2432 # want to do that, then you should use the --without-gnu-as and
2433 # --without-gnu-ld options for the configure script.  Similarly, if
2434 # the default is to use the included zlib and you don't want to do that,
2435 # you should use the --with-system-zlib option for the configure script.
2436
2437 if test x${use_gnu_as} = x &&
2438    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2439   with_gnu_as=yes
2440   extra_host_args="$extra_host_args --with-gnu-as"
2441 fi
2442
2443 if test x${use_gnu_ld} = x &&
2444    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2445   with_gnu_ld=yes
2446   extra_host_args="$extra_host_args --with-gnu-ld"
2447 fi
2448
2449 if test x${use_included_zlib} = x &&
2450    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2451   :
2452 else
2453   with_system_zlib=yes
2454   extra_host_args="$extra_host_args --with-system-zlib"
2455 fi
2456
2457 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2458 # can detect this case.
2459
2460 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2461   with_newlib=yes
2462   extra_host_args="$extra_host_args --with-newlib"
2463 fi
2464
2465 # Handle ${copy_dirs}
2466 set fnord ${copy_dirs}
2467 shift
2468 while test $# != 0 ; do
2469   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2470     :
2471   else
2472     echo Copying $1 to $2
2473
2474     # Use the install script to create the directory and all required
2475     # parent directories.
2476     if test -d $2 ; then
2477       :
2478     else
2479       echo >config.temp
2480       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2481     fi
2482
2483     # Copy the directory, assuming we have tar.
2484     # FIXME: Should we use B in the second tar?  Not all systems support it.
2485     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2486
2487     # It is the responsibility of the user to correctly adjust all
2488     # symlinks.  If somebody can figure out how to handle them correctly
2489     # here, feel free to add the code.
2490
2491     echo $1 > $2/COPIED
2492   fi
2493   shift; shift
2494 done
2495
2496 # Determine a target-dependent exec_prefix that the installed
2497 # gcc will search in.  Keep this list sorted by triplet, with
2498 # the *-*-osname triplets last.
2499 md_exec_prefix=
2500 case "${target}" in
2501   i[[34567]]86-pc-msdosdjgpp*)
2502     md_exec_prefix=/dev/env/DJDIR/bin
2503     ;;
2504   *-*-hpux* | \
2505   *-*-nto-qnx* | \
2506   *-*-solaris2*)
2507     md_exec_prefix=/usr/ccs/bin
2508     ;;
2509 esac
2510
2511 extra_arflags_for_target=
2512 extra_nmflags_for_target=
2513 extra_ranlibflags_for_target=
2514 target_makefile_frag=/dev/null
2515 case "${target}" in
2516   spu-*-*)
2517     target_makefile_frag="config/mt-spu"
2518     ;;
2519   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2520     target_makefile_frag="config/mt-sde"
2521     ;;
2522   mipsisa*-*-elfoabi*)
2523     target_makefile_frag="config/mt-mips-elfoabi"
2524     ;;
2525   mips*-*-*linux* | mips*-*-gnu*)
2526     target_makefile_frag="config/mt-mips-gnu"
2527     ;;
2528   nios2-*-elf*)
2529     target_makefile_frag="config/mt-nios2-elf"
2530     ;;
2531   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2532     target_makefile_frag="config/mt-gnu"
2533     ;;
2534   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2535     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2536     # commands to handle both 32-bit and 64-bit objects.  These flags are
2537     # harmless if we're using GNU nm or ar.
2538     extra_arflags_for_target=" -X32_64"
2539     extra_nmflags_for_target=" -B -X32_64"
2540     ;;
2541 esac
2542
2543 alphaieee_frag=/dev/null
2544 case $target in
2545   alpha*-*-*)
2546     # This just makes sure to use the -mieee option to build target libs.
2547     # This should probably be set individually by each library.
2548     alphaieee_frag="config/mt-alphaieee"
2549     ;;
2550 esac
2551
2552 # If --enable-target-optspace always use -Os instead of -O2 to build
2553 # the target libraries, similarly if it is not specified, use -Os
2554 # on selected platforms.
2555 ospace_frag=/dev/null
2556 case "${enable_target_optspace}:${target}" in
2557   yes:*)
2558     ospace_frag="config/mt-ospace"
2559     ;;
2560   :d30v-*)
2561     ospace_frag="config/mt-d30v"
2562     ;;
2563   :m32r-* | :d10v-* | :fr30-*)
2564     ospace_frag="config/mt-ospace"
2565     ;;
2566   no:* | :*)
2567     ;;
2568   *)
2569     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2570     ;;
2571 esac
2572
2573 # Some systems (e.g., one of the i386-aix systems the gas testers are
2574 # using) don't handle "\$" correctly, so don't use it here.
2575 tooldir='${exec_prefix}'/${target_noncanonical}
2576 build_tooldir=${tooldir}
2577
2578 # Create a .gdbinit file which runs the one in srcdir
2579 # and tells GDB to look there for source files.
2580
2581 if test -r ${srcdir}/.gdbinit ; then
2582   case ${srcdir} in
2583     .) ;;
2584     *) cat > ./.gdbinit <<EOF
2585 # ${NO_EDIT}
2586 dir ${srcdir}
2587 dir .
2588 source ${srcdir}/.gdbinit
2589 EOF
2590     ;;
2591   esac
2592 fi
2593
2594 # Make sure that the compiler is able to generate an executable.  If it
2595 # can't, we are probably in trouble.  We don't care whether we can run the
2596 # executable--we might be using a cross compiler--we only care whether it
2597 # can be created.  At this point the main configure script has set CC.
2598 we_are_ok=no
2599 echo "int main () { return 0; }" > conftest.c
2600 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2601 if test $? = 0 ; then
2602   if test -s conftest || test -s conftest.exe ; then
2603     we_are_ok=yes
2604   fi
2605 fi
2606 case $we_are_ok in
2607   no)
2608     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2609     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2610     rm -f conftest*
2611     exit 1
2612     ;;
2613 esac
2614 rm -f conftest*
2615
2616 # Decide which environment variable is used to find dynamic libraries.
2617 case "${host}" in
2618   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2619   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2620   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2621   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2622 esac
2623
2624 # On systems where the dynamic library environment variable is PATH,
2625 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2626 # built executables to PATH.
2627 if test "$RPATH_ENVVAR" = PATH; then
2628   GCC_SHLIB_SUBDIR=/shlib
2629 else
2630   GCC_SHLIB_SUBDIR=
2631 fi
2632
2633 # Adjust the toplevel makefile according to whether bootstrap was selected.
2634 case $enable_bootstrap in
2635   yes)
2636     bootstrap_suffix=bootstrap
2637     BUILD_CONFIG=bootstrap-debug
2638     ;;
2639   no)
2640     bootstrap_suffix=no-bootstrap
2641     BUILD_CONFIG=
2642     ;;
2643 esac
2644
2645 AC_MSG_CHECKING(for default BUILD_CONFIG)
2646
2647 AC_ARG_WITH([build-config],
2648   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2649                   [use config/NAME.mk build configuration])],
2650   [case $with_build_config in
2651    yes) with_build_config= ;;
2652    no) with_build_config= BUILD_CONFIG= ;;
2653    esac])
2654
2655 if test "x${with_build_config}" != x; then
2656   BUILD_CONFIG=$with_build_config
2657 else
2658   case $BUILD_CONFIG in
2659   bootstrap-debug)
2660     if echo "int f (void) { return 0; }" > conftest.c &&
2661        ${CC} -c conftest.c &&
2662        mv conftest.o conftest.o.g0 &&
2663        ${CC} -c -g conftest.c &&
2664        mv conftest.o conftest.o.g &&
2665        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2666       :
2667     else
2668       BUILD_CONFIG=
2669     fi
2670     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2671     ;;
2672   esac
2673 fi
2674 AC_MSG_RESULT($BUILD_CONFIG)
2675 AC_SUBST(BUILD_CONFIG)
2676
2677 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2678 AC_MSG_CHECKING([for --enable-vtable-verify])
2679 AC_ARG_ENABLE(vtable-verify,
2680 [AS_HELP_STRING([--enable-vtable-verify],
2681                 [Enable vtable verification feature])],
2682 [case "$enableval" in
2683  yes) enable_vtable_verify=yes ;;
2684  no)  enable_vtable_verify=no ;;
2685  *)   enable_vtable_verify=no;;
2686  esac],
2687 [enable_vtable_verify=no])
2688 AC_MSG_RESULT($enable_vtable_verify)
2689
2690 # Record target_configdirs and the configure arguments for target and
2691 # build configuration in Makefile.
2692 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2693 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2694 bootstrap_fixincludes=no
2695
2696 # If we are building libgomp, bootstrap it.
2697 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2698   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2699 fi
2700
2701 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2702 # or bootstrap-ubsan, bootstrap it.
2703 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2704   case "$BUILD_CONFIG" in
2705     *bootstrap-asan* | *bootstrap-ubsan* )
2706       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2707       bootstrap_fixincludes=yes
2708       ;;
2709   esac
2710 fi
2711
2712 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2713 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2714    test "$enable_vtable_verify" != no; then
2715   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2716 fi
2717
2718 # If we are building libmpx, bootstrap it.
2719 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2720   bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2721 fi
2722
2723 # Determine whether gdb needs tk/tcl or not.
2724 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2725 # and in that case we want gdb to be built without tk.  Ugh!
2726 # In fact I believe gdb is the *only* package directly dependent on tk,
2727 # so we should be able to put the 'maybe's in unconditionally and
2728 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2729 # 100% sure that that's safe though.
2730
2731 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2732 case "$enable_gdbtk" in
2733   no)
2734     GDB_TK="" ;;
2735   yes)
2736     GDB_TK="${gdb_tk}" ;;
2737   *)
2738     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2739     # distro.  Eventually someone will fix this and move Insight, nee
2740     # gdbtk to a separate directory.
2741     if test -d ${srcdir}/gdb/gdbtk ; then
2742       GDB_TK="${gdb_tk}"
2743     else
2744       GDB_TK=""
2745     fi
2746     ;;
2747 esac
2748 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2749 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2750
2751 # Strip out unwanted targets.
2752
2753 # While at that, we remove Makefiles if we were started for recursive
2754 # configuration, so that the top-level Makefile reconfigures them,
2755 # like we used to do when configure itself was recursive.
2756
2757 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2758 # but now we're fixing up the Makefile ourselves with the additional
2759 # commands passed to AC_CONFIG_FILES.  Use separate variables
2760 # extrasub-{build,host,target} not because there is any reason to split
2761 # the substitutions up that way, but only to remain below the limit of
2762 # 99 commands in a script, for HP-UX sed.
2763 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2764
2765 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2766   yes:yes:*\ gold\ *:*,c++,*) ;;
2767   yes:yes:*\ gold\ *:*)
2768     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2769     ;;
2770 esac
2771
2772 extrasub_build=
2773 for module in ${build_configdirs} ; do
2774   if test -z "${no_recursion}" \
2775      && test -f ${build_subdir}/${module}/Makefile; then
2776     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2777     rm -f ${build_subdir}/${module}/Makefile
2778   fi
2779   extrasub_build="$extrasub_build
2780 /^@if build-$module\$/d
2781 /^@endif build-$module\$/d
2782 /^@if build-$module-$bootstrap_suffix\$/d
2783 /^@endif build-$module-$bootstrap_suffix\$/d"
2784 done
2785 extrasub_host=
2786 for module in ${configdirs} ; do
2787   if test -z "${no_recursion}"; then
2788     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2789       if test -f ${file}; then
2790         echo 1>&2 "*** removing ${file} to force reconfigure"
2791         rm -f ${file}
2792       fi
2793     done
2794   fi
2795   case ${module},${bootstrap_fixincludes} in
2796     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2797     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2798   esac
2799   extrasub_host="$extrasub_host
2800 /^@if $module\$/d
2801 /^@endif $module\$/d
2802 /^@if $module-$host_bootstrap_suffix\$/d
2803 /^@endif $module-$host_bootstrap_suffix\$/d"
2804 done
2805 extrasub_target=
2806 for module in ${target_configdirs} ; do
2807   if test -z "${no_recursion}" \
2808      && test -f ${target_subdir}/${module}/Makefile; then
2809     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2810     rm -f ${target_subdir}/${module}/Makefile
2811   fi
2812
2813   # We only bootstrap target libraries listed in bootstrap_target_libs.
2814   case $bootstrap_target_libs in
2815     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2816     *) target_bootstrap_suffix=no-bootstrap ;;
2817   esac
2818
2819   extrasub_target="$extrasub_target
2820 /^@if target-$module\$/d
2821 /^@endif target-$module\$/d
2822 /^@if target-$module-$target_bootstrap_suffix\$/d
2823 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2824 done
2825
2826 # Do the final fixup along with target modules.
2827 extrasub_target="$extrasub_target
2828 /^@if /,/^@endif /d"
2829
2830 # Create the serialization dependencies.  This uses a temporary file.
2831
2832 AC_ARG_ENABLE([serial-configure],
2833 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2834                 [force sequential configuration of
2835                  sub-packages for the host, target or build
2836                  machine, or all sub-packages])])
2837
2838 case ${enable_serial_configure} in
2839   yes)
2840     enable_serial_build_configure=yes
2841     enable_serial_host_configure=yes
2842     enable_serial_target_configure=yes
2843     ;;
2844 esac
2845
2846 # These force 'configure's to be done one at a time, to avoid problems
2847 # with contention over a shared config.cache.
2848 rm -f serdep.tmp
2849 echo '# serdep.tmp' > serdep.tmp
2850 olditem=
2851 test "x${enable_serial_build_configure}" = xyes &&
2852 for item in ${build_configdirs} ; do
2853   case ${olditem} in
2854     "") ;;
2855     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2856   esac
2857   olditem=${item}
2858 done
2859 olditem=
2860 test "x${enable_serial_host_configure}" = xyes &&
2861 for item in ${configdirs} ; do
2862   case ${olditem} in
2863     "") ;;
2864     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2865   esac
2866   olditem=${item}
2867 done
2868 olditem=
2869 test "x${enable_serial_target_configure}" = xyes &&
2870 for item in ${target_configdirs} ; do
2871   case ${olditem} in
2872     "") ;;
2873     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2874   esac
2875   olditem=${item}
2876 done
2877 serialization_dependencies=serdep.tmp
2878 AC_SUBST_FILE(serialization_dependencies)
2879
2880 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2881 # target, nonopt, and variable assignments.  These are the ones we
2882 # might not want to pass down to subconfigures.  The exception being
2883 # --cache-file=/dev/null, which is used to turn off the use of cache
2884 # files altogether, and which should be passed on to subconfigures.
2885 # Also strip program-prefix, program-suffix, and program-transform-name,
2886 # so that we can pass down a consistent program-transform-name.
2887 baseargs=
2888 tbaseargs=
2889 keep_next=no
2890 skip_next=no
2891 eval "set -- $ac_configure_args"
2892 for ac_arg
2893 do
2894   if test X"$skip_next" = X"yes"; then
2895     skip_next=no
2896     continue
2897   fi
2898   if test X"$keep_next" = X"yes"; then
2899     case $ac_arg in
2900       *\'*)
2901         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2902     esac
2903     baseargs="$baseargs '$ac_arg'"
2904     tbaseargs="$tbaseargs '$ac_arg'"
2905     keep_next=no
2906     continue
2907   fi
2908
2909   # Handle separated arguments.  Based on the logic generated by
2910   # autoconf 2.59.
2911   case $ac_arg in
2912     *=* | --config-cache | -C | -disable-* | --disable-* \
2913       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2914       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2915       | -with-* | --with-* | -without-* | --without-* | --x)
2916       separate_arg=no
2917       ;;
2918     -*)
2919       separate_arg=yes
2920       ;;
2921     *)
2922       separate_arg=no
2923       ;;
2924   esac
2925
2926   skip_targ=no
2927   case $ac_arg in
2928 changequote(,)
2929   --with-* | --without-*)
2930     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2931
2932     case $libopt in
2933     *[-_]include)
2934       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2935       ;;
2936     *[-_]lib)
2937       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2938       ;;
2939     *)
2940       lib=$libopt
2941       ;;
2942     esac
2943 changequote([,])
2944
2945     case $lib in
2946     mpc | mpfr | gmp | isl)
2947       # If we're processing --with-$lib, --with-$lib-include or
2948       # --with-$lib-lib, for one of the libs above, and target is
2949       # different from host, don't pass the current argument to any
2950       # target library's configure.
2951       if test x$is_cross_compiler = xyes; then
2952         skip_targ=yes
2953       fi
2954       ;;
2955     esac
2956     ;;
2957   esac
2958
2959   case "$ac_arg" in
2960     --cache-file=/dev/null | \
2961     -cache-file=/dev/null )
2962       # Handled here to avoid the test to skip args below.
2963       baseargs="$baseargs '$ac_arg'"
2964       tbaseargs="$tbaseargs '$ac_arg'"
2965       # Assert: $separate_arg should always be no.
2966       keep_next=$separate_arg
2967       ;;
2968     --no*)
2969       continue
2970       ;;
2971     --c* | \
2972     --sr* | \
2973     --ho* | \
2974     --bu* | \
2975     --t* | \
2976     --program-* | \
2977     -cache_file* | \
2978     -srcdir* | \
2979     -host* | \
2980     -build* | \
2981     -target* | \
2982     -program-prefix* | \
2983     -program-suffix* | \
2984     -program-transform-name* )
2985       skip_next=$separate_arg
2986       continue
2987       ;;
2988     -*)
2989       # An option.  Add it.
2990       case $ac_arg in
2991         *\'*)
2992           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2993       esac
2994       baseargs="$baseargs '$ac_arg'"
2995       if test X"$skip_targ" = Xno; then
2996         tbaseargs="$tbaseargs '$ac_arg'"
2997       fi
2998       keep_next=$separate_arg
2999       ;;
3000     *)
3001       # Either a variable assignment, or a nonopt (triplet).  Don't
3002       # pass it down; let the Makefile handle this.
3003       continue
3004       ;;
3005   esac
3006 done
3007 # Remove the initial space we just introduced and, as these will be
3008 # expanded by make, quote '$'.
3009 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3010
3011 # Add in --program-transform-name, after --program-prefix and
3012 # --program-suffix have been applied to it.  Autoconf has already
3013 # doubled dollar signs and backslashes in program_transform_name; we want
3014 # the backslashes un-doubled, and then the entire thing wrapped in single
3015 # quotes, because this will be expanded first by make and then by the shell.
3016 # Also, because we want to override the logic in subdir configure scripts to
3017 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3018 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3019 ${program_transform_name}
3020 EOF_SED
3021 gcc_transform_name=`cat conftestsed.out`
3022 rm -f conftestsed.out
3023 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3024 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3025 if test "$silent" = yes; then
3026   baseargs="$baseargs --silent"
3027   tbaseargs="$tbaseargs --silent"
3028 fi
3029 baseargs="$baseargs --disable-option-checking"
3030 tbaseargs="$tbaseargs --disable-option-checking"
3031
3032 # Record and document user additions to sub configure arguments.
3033 AC_ARG_VAR([build_configargs],
3034            [additional configure arguments for build directories])
3035 AC_ARG_VAR([host_configargs],
3036            [additional configure arguments for host directories])
3037 AC_ARG_VAR([target_configargs],
3038            [additional configure arguments for target directories])
3039
3040 # For the build-side libraries, we just need to pretend we're native,
3041 # and not use the same cache file.  Multilibs are neither needed nor
3042 # desired.  We can't even use the same cache file for all build-side
3043 # libraries, as they're compiled differently; some with C, some with
3044 # C++ or with different feature-enabling options.
3045 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3046
3047 # For host modules, accept cache file option, or specification as blank.
3048 case "${cache_file}" in
3049 "") # empty
3050   cache_file_option="" ;;
3051 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3052   cache_file_option="--cache-file=${cache_file}" ;;
3053 *) # relative path
3054   cache_file_option="--cache-file=../${cache_file}" ;;
3055 esac
3056
3057 # Host dirs don't like to share a cache file either, horribly enough.
3058 # This seems to be due to autoconf 2.5x stupidity.
3059 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3060
3061 target_configargs="$target_configargs ${tbaseargs}"
3062
3063 # Passing a --with-cross-host argument lets the target libraries know
3064 # whether they are being built with a cross-compiler or being built
3065 # native.  However, it would be better to use other mechanisms to make the
3066 # sorts of decisions they want to make on this basis.  Please consider
3067 # this option to be deprecated.  FIXME.
3068 if test x${is_cross_compiler} = xyes ; then
3069   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3070 fi
3071
3072 # Special user-friendly check for native x86_64-linux build, if
3073 # multilib is not explicitly enabled.
3074 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3075   x86_64-*linux*:yes:$build:$build:)
3076     # Make sure we have a development environment that handles 32-bit
3077     dev64=no
3078     echo "int main () { return 0; }" > conftest.c
3079     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3080     if test $? = 0 ; then
3081       if test -s conftest || test -s conftest.exe ; then
3082         dev64=yes
3083       fi
3084     fi
3085     rm -f conftest*
3086     if test x${dev64} != xyes ; then
3087       AC_MSG_ERROR([I suspect your system does not have 32-bit development libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib.])
3088     fi
3089     ;;
3090 esac
3091
3092 # Default to --enable-multilib.
3093 if test x${enable_multilib} = x ; then
3094   target_configargs="--enable-multilib ${target_configargs}"
3095 fi
3096
3097 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3098 # changed from the earlier setting of with_newlib.
3099 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3100   target_configargs="--with-newlib ${target_configargs}"
3101 fi
3102
3103 # Different target subdirs use different values of certain variables
3104 # (notably CXX).  Worse, multilibs use *lots* of different values.
3105 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3106 # it doesn't automatically accept command-line overrides of them.
3107 # This means it's not safe for target subdirs to share a cache file,
3108 # which is disgusting, but there you have it.  Hopefully this can be
3109 # fixed in future.  It's still worthwhile to use a cache file for each
3110 # directory.  I think.
3111
3112 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3113 # We need to pass --target, as newer autoconf's requires consistency
3114 # for target_alias and gcc doesn't manage it consistently.
3115 target_configargs="--cache-file=./config.cache ${target_configargs}"
3116
3117 FLAGS_FOR_TARGET=
3118 case " $target_configdirs " in
3119  *" newlib "*)
3120   case " $target_configargs " in
3121   *" --with-newlib "*)
3122    case "$target" in
3123     *-cygwin*)
3124       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3125       ;;
3126    esac
3127
3128    # If we're not building GCC, don't discard standard headers.
3129    if test -d ${srcdir}/gcc; then
3130      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3131
3132      if test "${build}" != "${host}"; then
3133        # On Canadian crosses, CC_FOR_TARGET will have already been set
3134        # by `configure', so we won't have an opportunity to add -Bgcc/
3135        # to it.  This is right: we don't want to search that directory
3136        # for binaries, but we want the header files in there, so add
3137        # them explicitly.
3138        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3139
3140        # Someone might think of using the pre-installed headers on
3141        # Canadian crosses, in case the installed compiler is not fully
3142        # compatible with the compiler being built.  In this case, it
3143        # would be better to flag an error than risking having
3144        # incompatible object files being constructed.  We can't
3145        # guarantee that an error will be flagged, but let's hope the
3146        # compiler will do it, when presented with incompatible header
3147        # files.
3148      fi
3149    fi
3150
3151    case "${target}-${is_cross_compiler}" in
3152    i[[3456789]]86-*-linux*-no)
3153       # Here host == target, so we don't need to build gcc,
3154       # so we don't want to discard standard headers.
3155       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3156       ;;
3157    *)
3158       # If we're building newlib, use its generic headers last, but search
3159       # for any libc-related directories first (so make it the last -B
3160       # switch).
3161       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3162
3163       # If we're building libgloss, find the startup file, simulator library
3164       # and linker script.
3165       case " $target_configdirs " in
3166         *" libgloss "*)
3167         # Look for startup file, simulator library and maybe linker script.
3168         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3169         # Look for libnosys.a in case the target needs it.
3170         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3171         # Most targets have the linker script in the source directory.
3172         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3173         ;;
3174       esac
3175       ;;
3176    esac
3177    ;;
3178   esac
3179   ;;
3180 esac
3181
3182 case "$target" in
3183   x86_64-*mingw* | *-w64-mingw*)
3184   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3185   # however, use a symlink named 'mingw' in ${prefix} .
3186     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3187     ;;
3188   *-mingw*)
3189   # MinGW can't be handled as Cygwin above since it does not use newlib.
3190     FLAGS_FOR_TARGET=$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'
3191     ;;
3192 esac
3193
3194 # Allow the user to override the flags for
3195 # our build compiler if desired.
3196 if test x"${build}" = x"${host}" ; then
3197   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3198   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3199   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3200 fi
3201
3202 # On Canadian crosses, we'll be searching the right directories for
3203 # the previously-installed cross compiler, so don't bother to add
3204 # flags for directories within the install tree of the compiler
3205 # being built; programs in there won't even run.
3206 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3207   # Search for pre-installed headers if nothing else fits.
3208   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3209 fi
3210
3211 if test "x${use_gnu_ld}" = x &&
3212    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3213   # Arrange for us to find uninstalled linker scripts.
3214   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3215 fi
3216
3217 # Search for other target-specific linker scripts and such.
3218 case "${target}" in
3219   mep*)
3220     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3221     ;;
3222 esac
3223
3224 # Makefile fragments.
3225 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3226 do
3227   eval fragval=\$$frag
3228   if test $fragval != /dev/null; then
3229     eval $frag=${srcdir}/$fragval
3230   fi
3231 done
3232 AC_SUBST_FILE(host_makefile_frag)
3233 AC_SUBST_FILE(target_makefile_frag)
3234 AC_SUBST_FILE(alphaieee_frag)
3235 AC_SUBST_FILE(ospace_frag)
3236
3237 # Miscellanea: directories, flags, etc.
3238 AC_SUBST(RPATH_ENVVAR)
3239 AC_SUBST(GCC_SHLIB_SUBDIR)
3240 AC_SUBST(tooldir)
3241 AC_SUBST(build_tooldir)
3242 AC_SUBST(CONFIGURE_GDB_TK)
3243 AC_SUBST(GDB_TK)
3244 AC_SUBST(INSTALL_GDB_TK)
3245
3246 # Build module lists & subconfigure args.
3247 AC_SUBST(build_configargs)
3248 AC_SUBST(build_configdirs)
3249
3250 # Host module lists & subconfigure args.
3251 AC_SUBST(host_configargs)
3252 AC_SUBST(configdirs)
3253 AC_SUBST(target_configdirs)
3254
3255 # Target module lists & subconfigure args.
3256 AC_SUBST(target_configargs)
3257
3258
3259 # Build tools.
3260 AC_SUBST(AR_FOR_BUILD)
3261 AC_SUBST(AS_FOR_BUILD)
3262 AC_SUBST(CC_FOR_BUILD)
3263 AC_SUBST(CFLAGS_FOR_BUILD)
3264 AC_SUBST(CXXFLAGS_FOR_BUILD)
3265 AC_SUBST(CXX_FOR_BUILD)
3266 AC_SUBST(DLLTOOL_FOR_BUILD)
3267 AC_SUBST(GCJ_FOR_BUILD)
3268 AC_SUBST(GFORTRAN_FOR_BUILD)
3269 AC_SUBST(GOC_FOR_BUILD)
3270 AC_SUBST(LDFLAGS_FOR_BUILD)
3271 AC_SUBST(LD_FOR_BUILD)
3272 AC_SUBST(NM_FOR_BUILD)
3273 AC_SUBST(RANLIB_FOR_BUILD)
3274 AC_SUBST(WINDMC_FOR_BUILD)
3275 AC_SUBST(WINDRES_FOR_BUILD)
3276
3277 # Generate default definitions for YACC, M4, LEX and other programs that run
3278 # on the build machine.  These are used if the Makefile can't locate these
3279 # programs in objdir.
3280 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3281
3282 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3283 case " $build_configdirs " in
3284   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3285 esac
3286
3287 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3288 case " $build_configdirs " in
3289   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3290 esac
3291
3292 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3293 case " $build_configdirs " in
3294   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3295 esac
3296
3297 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3298 case " $build_configdirs " in
3299   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3300   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3301 esac
3302
3303 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3304 case " $build_configdirs " in
3305   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3306 esac
3307
3308 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3309 case " $build_configdirs " in
3310   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3311   *)
3312 changequote(,)
3313     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3314     # higher, else we use the "missing" dummy.
3315     if ${MAKEINFO} --version \
3316        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3317       :
3318     else
3319       MAKEINFO="$MISSING makeinfo"
3320     fi
3321     ;;
3322 changequote([,])
3323 esac
3324
3325 # FIXME: expect and dejagnu may become build tools?
3326
3327 AC_CHECK_PROGS(EXPECT, expect, expect)
3328 case " $configdirs " in
3329   *" expect "*)
3330     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3331     ;;
3332 esac
3333
3334 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3335 case " $configdirs " in
3336   *" dejagnu "*)
3337     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3338     ;;
3339 esac
3340
3341
3342 # Host tools.
3343 NCN_STRICT_CHECK_TOOLS(AR, ar)
3344 NCN_STRICT_CHECK_TOOLS(AS, as)
3345 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3346 NCN_STRICT_CHECK_TOOLS(LD, ld)
3347 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3348 NCN_STRICT_CHECK_TOOLS(NM, nm)
3349 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3350 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3351 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3352 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3353 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3354 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3355 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3356 AC_SUBST(CC)
3357 AC_SUBST(CXX)
3358 AC_SUBST(CFLAGS)
3359 AC_SUBST(CXXFLAGS)
3360
3361 # Target tools.
3362 AC_ARG_WITH([build-time-tools],
3363   [AS_HELP_STRING([--with-build-time-tools=PATH],
3364                   [use given path to find target tools during the build])],
3365   [case x"$withval" in
3366      x/*) ;;
3367      *)
3368        with_build_time_tools=
3369        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3370        ;;
3371    esac],
3372   [with_build_time_tools=])
3373
3374 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3375 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3376 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3377 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3378 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3379 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3380
3381 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3382 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3383 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3384 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3385 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3386 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3387 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3388 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3389 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3390 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3391 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3392 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3393 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3394
3395 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3396
3397 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3398 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3399 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3400 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3401 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3402                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3403                 c++)
3404 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3405                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3406                 c++)
3407 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3408 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3409 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3410                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3411 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3412                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3413 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3414                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3415 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3416 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3417 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3418 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3419 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3420 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3421 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3422 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3423 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3424 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3425
3426 AC_SUBST(FLAGS_FOR_TARGET)
3427 AC_SUBST(RAW_CXX_FOR_TARGET)
3428
3429 # Certain tools may need extra flags.
3430 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3431 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3432 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3433
3434 # When building target libraries, except in a Canadian cross, we use
3435 # the same toolchain as the compiler we just built.
3436 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3437 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3438 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3439 if test $host = $build; then
3440   case " $configdirs " in
3441     *" gcc "*)
3442       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3443       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3444       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3445       ;;
3446   esac
3447 fi
3448
3449 AC_SUBST(COMPILER_AS_FOR_TARGET)
3450 AC_SUBST(COMPILER_LD_FOR_TARGET)
3451 AC_SUBST(COMPILER_NM_FOR_TARGET)
3452
3453 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3454 AC_ARG_ENABLE(maintainer-mode,
3455 [AS_HELP_STRING([--enable-maintainer-mode],
3456                 [enable make rules and dependencies not useful
3457                  (and sometimes confusing) to the casual installer])],
3458       USE_MAINTAINER_MODE=$enableval,
3459       USE_MAINTAINER_MODE=no)
3460 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3461 AC_SUBST(MAINTAINER_MODE_TRUE)
3462 AC_SUBST(MAINTAINER_MODE_FALSE)
3463 if test "$USE_MAINTAINER_MODE" = yes; then
3464   MAINTAINER_MODE_TRUE=
3465   MAINTAINER_MODE_FALSE='#'
3466 else
3467   MAINTAINER_MODE_TRUE='#'
3468   MAINTAINER_MODE_FALSE=
3469 fi
3470 MAINT=$MAINTAINER_MODE_TRUE
3471 AC_SUBST(MAINT)dnl
3472
3473 # ---------------------
3474 # GCC bootstrap support
3475 # ---------------------
3476
3477 # Stage specific cflags for build.
3478 stage1_cflags="-g"
3479 case $build in
3480   vax-*-*)
3481     case ${GCC} in
3482       yes) stage1_cflags="-g -Wa,-J" ;;
3483       *) stage1_cflags="-g -J" ;;
3484     esac ;;
3485 esac
3486
3487 AC_SUBST(stage1_cflags)
3488
3489 # Enable --enable-checking in stage1 of the compiler.
3490 AC_ARG_ENABLE(stage1-checking,
3491 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3492                 [choose additional checking for stage1 of the compiler])],
3493 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3494 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3495   # For --disable-checking or implicit --enable-checking=release, avoid
3496   # setting --enable-checking=gc in the default stage1 checking for LTO
3497   # bootstraps.  See PR62077.
3498   stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types
3499   case $BUILD_CONFIG in
3500     *lto*)
3501       if test "x$enable_checking" = x && \
3502          test -d ${srcdir}/gcc && \
3503          test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3504         stage1_checking=--enable-checking=yes,types
3505       fi;;
3506     *) stage1_checking=--enable-checking=yes,types;;
3507   esac
3508 else
3509   stage1_checking=--enable-checking=$enable_checking,types
3510 fi])
3511 AC_SUBST(stage1_checking)
3512
3513 # Enable -Werror in bootstrap stage2 and later.
3514 AC_ARG_ENABLE(werror,
3515 [AS_HELP_STRING([--enable-werror],
3516                 [enable -Werror in bootstrap stage2 and later])], [],
3517 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3518   enable_werror=yes
3519 else
3520   enable_werror=no
3521 fi])
3522 case ${enable_werror} in
3523   yes) stage2_werror_flag="--enable-werror-always" ;;
3524   *) stage2_werror_flag="" ;;
3525 esac
3526 AC_SUBST(stage2_werror_flag)
3527
3528 # Enable --enable-host-shared.
3529 AC_ARG_ENABLE(host-shared,
3530 [AS_HELP_STRING([--enable-host-shared],
3531                 [build host code as shared libraries])],
3532 [host_shared=$enableval], [host_shared=no])
3533 AC_SUBST(host_shared)
3534
3535 # PR jit/64780: Require the user to explicitly specify
3536 # --enable-host-shared if the jit is enabled, hinting
3537 # that they might want to do a separate configure/build of
3538 # the jit, to avoid users from slowing down the rest of the
3539 # compiler by enabling the jit.
3540 if test ${host_shared} = "no" ; then
3541   case "${enable_languages}" in
3542     *jit*)
3543       AC_MSG_ERROR([
3544 Enabling language "jit" requires --enable-host-shared.
3545
3546 --enable-host-shared typically slows the rest of the compiler down by
3547 a few %, so you must explicitly enable it.
3548
3549 If you want to build both the jit and the regular compiler, it is often
3550 best to do this via two separate configure/builds, in separate
3551 directories, to avoid imposing the performance cost of
3552 --enable-host-shared on the regular compiler.])
3553       ;;
3554     *)
3555       ;;
3556   esac
3557 fi
3558
3559 # Specify what files to not compare during bootstrap.
3560
3561 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3562 case "$target" in
3563   hppa*64*-*-hpux*) ;;
3564   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3565   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3566 esac
3567 AC_SUBST(compare_exclusions)
3568
3569 AC_CONFIG_FILES([Makefile],
3570   [sed "$extrasub_build" Makefile |
3571    sed "$extrasub_host" |
3572    sed "$extrasub_target" > mf$$
3573    mv -f mf$$ Makefile],
3574   [extrasub_build="$extrasub_build"
3575    extrasub_host="$extrasub_host"
3576    extrasub_target="$extrasub_target"])
3577 AC_OUTPUT