configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
   3 #   2014, 2015, 2016 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32
  33 AC_INIT(move-if-change)
  34 AC_PREREQ(2.64)
  35 AC_DISABLE_OPTION_CHECKING
  36
  37 progname=$0
  38 # if PWD already has a value, it is probably wrong.
  39 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  40
  41 # Export original configure arguments for use by sub-configures.
  42 # Quote arguments with shell meta charatcers.
  43 TOPLEVEL_CONFIGURE_ARGUMENTS=
  44 set -- "$progname" "$@"
  45 for ac_arg
  46 do
  47   case "$ac_arg" in
  48   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  49     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  50     # if the argument is of the form -foo=baz, quote the baz part only
  51     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  52   *) ;;
  53   esac
  54   # Add the quoted argument to the list.
  55   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  56 done
  57 if test "$silent" = yes; then
  58   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  59 fi
  60 # Remove the initial space we just introduced and, as these will be
  61 # expanded by make, quote '$'.
  62 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  63 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  64
  65 # Find the build, host, and target systems.
  66 ACX_NONCANONICAL_BUILD
  67 ACX_NONCANONICAL_HOST
  68 ACX_NONCANONICAL_TARGET
  69
  70 dnl Autoconf 2.5x and later will set a default program prefix if
  71 dnl --target was used, even if it was the same as --host.  Disable
  72 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  73 dnl to take effect.
  74 test "$host_noncanonical" = "$target_noncanonical" &&
  75   test "$program_prefix$program_suffix$program_transform_name" = \
  76     NONENONEs,x,x, &&
  77   program_transform_name=s,y,y,
  78
  79 AC_CANONICAL_SYSTEM
  80 AC_ARG_PROGRAM
  81
  82 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  83 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  84
  85 # Get 'install' or 'install-sh' and its variants.
  86 AC_PROG_INSTALL
  87 ACX_PROG_LN
  88 AC_PROG_LN_S
  89 AC_PROG_SED
  90 AC_PROG_AWK
  91
  92 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  93
  94 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  95 # a relative path.
  96 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  97   INSTALL="${srcpwd}/install-sh -c"
  98 fi
  99
 100 # Set srcdir to "." if that's what it is.
 101 # This is important for multilib support.
 102 pwd=`${PWDCMD-pwd}`
 103 if test "${pwd}" = "${srcpwd}" ; then
 104   srcdir=.
 105 fi
 106
 107 topsrcdir=$srcpwd
 108
 109 extra_host_args=
 110
 111 ### To add a new directory to the tree, first choose whether it is a target
 112 ### or a host dependent tool.  Then put it into the appropriate list
 113 ### (library or tools, host or target), doing a dependency sort.
 114
 115 # Subdirs will be configured in the order listed in build_configdirs,
 116 # configdirs, or target_configdirs; see the serialization section below.
 117
 118 # Dependency sorting is only needed when *configuration* must be done in
 119 # a particular order.  In all cases a dependency should be specified in
 120 # the Makefile, whether or not it's implicitly specified here.
 121
 122 # Double entries in build_configdirs, configdirs, or target_configdirs may
 123 # cause circular dependencies and break everything horribly.
 124
 125 # these library is used by various programs built for the build
 126 # environment
 127 #
 128 build_libs="build-libiberty build-libcpp"
 129
 130 # these tools are built for the build environment
 131 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 132
 133 # these libraries are used by various programs built for the host environment
 134 #f
 135 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv"
 136
 137 # these tools are built for the host environment
 138 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 139 # know that we are building the simulator.
 140 # binutils, gas and ld appear in that order because it makes sense to run
 141 # "make check" in that particular order.
 142 # If --enable-gold is used, "gold" may replace "ld".
 143 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 144
 145 # these libraries are built for the target environment, and are built after
 146 # the host libraries and the host tools (which may be a cross compiler)
 147 # Note that libiberty is not a target library.
 148 target_libraries="target-libgcc \
 149                 target-libbacktrace \
 150                 target-libgloss \
 151                 target-newlib \
 152                 target-libgomp \
 153                 target-libcilkrts \
 154                 target-liboffloadmic \
 155                 target-libhsail-rt \
 156                 target-libatomic \
 157                 target-libitm \
 158                 target-libstdc++-v3 \
 159                 target-libsanitizer \
 160                 target-libvtv \
 161                 target-libmpx \
 162                 target-libssp \
 163                 target-libquadmath \
 164                 target-libgfortran \
 165                 target-libffi \
 166                 target-libobjc \
 167                 target-libada \
 168                 target-libgo"
 169
 170 # these tools are built using the target libraries, and are intended to
 171 # run only in the target environment
 172 #
 173 # note: any program that *uses* libraries that are in the "target_libraries"
 174 # list belongs in this list.
 175 #
 176 target_tools="target-rda"
 177
 178 ################################################################################
 179
 180 ## All tools belong in one of the four categories, and are assigned above
 181 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 182 ## is important because configure will choke if they ever get through.
 183 ## ${configdirs} is directories we build using the host tools.
 184 ## ${target_configdirs} is directories we build using the target tools.
 185 configdirs=`echo ${host_libs} ${host_tools}`
 186 target_configdirs=`echo ${target_libraries} ${target_tools}`
 187 build_configdirs=`echo ${build_libs} ${build_tools}`
 188
 189 m4_divert_text([PARSE_ARGS],
 190 [case $srcdir in
 191   *" "*)
 192 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 193     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 194 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 195     ;;
 196 esac
 197 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 198 ])
 199
 200 ################################################################################
 201
 202 srcname="gnu development package"
 203
 204 # This gets set non-empty for some net releases of packages.
 205 appdirs=""
 206
 207 # Define is_cross_compiler to save on calls to 'test'.
 208 is_cross_compiler=
 209 if test x"${host}" = x"${target}" ; then
 210   is_cross_compiler=no
 211 else
 212   is_cross_compiler=yes
 213 fi
 214
 215 # Find the build and target subdir names.
 216 GCC_TOPLEV_SUBDIRS
 217 # Be sure to cover against remnants of an in-tree build.
 218 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 219   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 220 Use a pristine source tree when building in a separate tree])
 221 fi
 222
 223 # Skipdirs are removed silently.
 224 skipdirs=
 225 # Noconfigdirs are removed loudly.
 226 noconfigdirs=""
 227
 228 use_gnu_ld=
 229 # Make sure we don't let GNU ld be added if we didn't want it.
 230 if test x$with_gnu_ld = xno ; then
 231   use_gnu_ld=no
 232   noconfigdirs="$noconfigdirs ld gold"
 233 fi
 234
 235 use_gnu_as=
 236 # Make sure we don't let GNU as be added if we didn't want it.
 237 if test x$with_gnu_as = xno ; then
 238   use_gnu_as=no
 239   noconfigdirs="$noconfigdirs gas"
 240 fi
 241
 242 use_included_zlib=
 243 AC_ARG_WITH(system-zlib,
 244 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 245 # Make sure we don't let ZLIB be added if we didn't want it.
 246 if test x$with_system_zlib = xyes ; then
 247   use_included_zlib=no
 248   noconfigdirs="$noconfigdirs zlib"
 249 fi
 250
 251 # some tools are so dependent upon X11 that if we're not building with X,
 252 # it's not even worth trying to configure, much less build, that tool.
 253
 254 case ${with_x} in
 255   yes | "") ;; # the default value for this tree is that X11 is available
 256   no)
 257     skipdirs="${skipdirs} tk itcl libgui"
 258     # We won't be able to build gdbtk without X.
 259     enable_gdbtk=no
 260     ;;
 261   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 262 esac
 263
 264 # Some are only suitable for cross toolchains.
 265 # Remove these if host=target.
 266 cross_only="target-libgloss target-newlib target-opcodes"
 267
 268 case $is_cross_compiler in
 269   no) skipdirs="${skipdirs} ${cross_only}" ;;
 270 esac
 271
 272 # If both --with-headers and --with-libs are specified, default to
 273 # --without-newlib.
 274 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 275    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 276   if test x"${with_newlib}" = x ; then
 277     with_newlib=no
 278   fi
 279 fi
 280
 281 # Recognize --with-newlib/--without-newlib.
 282 case ${with_newlib} in
 283   no) skipdirs="${skipdirs} target-newlib" ;;
 284   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 285 esac
 286
 287 AC_ARG_ENABLE(as-accelerator-for,
 288 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 289                 [build as offload target compiler.
 290                 Specify offload host triple by ARG])])
 291
 292 AC_ARG_ENABLE(offload-targets,
 293 [AS_HELP_STRING([--enable-offload-targets=LIST],
 294                 [enable offloading to devices from comma-separated LIST of
 295                 TARGET[=DIR]. Use optional path to find offload target compiler
 296                 during the build])],
 297 [
 298   if test x"$enable_offload_targets" = x; then
 299     AC_MSG_ERROR([no offload targets specified])
 300   fi
 301 ], [enable_offload_targets=])
 302
 303 # Handle --enable-gold, --enable-ld.
 304 # --disable-gold [--enable-ld]
 305 #     Build only ld.  Default option.
 306 # --enable-gold [--enable-ld]
 307 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 308 #     as "ld.bfd" and "ld".
 309 # --enable-gold=default [--enable-ld]
 310 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 311 #     install ld as "ld.bfd".
 312 # --enable-gold[=default] --disable-ld
 313 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 314 # --enable-gold --enable-ld=default
 315 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 316 #     and ld.bfd).
 317 #     In other words, ld is default
 318 # --enable-gold=default --enable-ld=default
 319 #     Error.
 320
 321 default_ld=
 322 AC_ARG_ENABLE(gold,
 323 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 324                 [build gold @<:@ARG={default,yes,no}@:>@])],
 325 ENABLE_GOLD=$enableval,
 326 ENABLE_GOLD=no)
 327 case "${ENABLE_GOLD}" in
 328   yes|default)
 329     # Check for ELF target.
 330     is_elf=no
 331     case "${target}" in
 332       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 333       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 334       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 335       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 336         case "${target}" in
 337           *-*-linux*aout* | *-*-linux*oldld*)
 338             ;;
 339           *)
 340             is_elf=yes
 341             ;;
 342         esac
 343     esac
 344
 345     if test "$is_elf" = "yes"; then
 346       # Check for target supported by gold.
 347       case "${target}" in
 348         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 349         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 350           configdirs="$configdirs gold"
 351           if test x${ENABLE_GOLD} = xdefault; then
 352             default_ld=gold
 353           fi
 354           ENABLE_GOLD=yes
 355           ;;
 356       esac
 357     fi
 358     ;;
 359   no)
 360     ;;
 361   *)
 362     AC_MSG_ERROR([invalid --enable-gold argument])
 363     ;;
 364 esac
 365
 366 AC_ARG_ENABLE(ld,
 367 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 368                 [build ld @<:@ARG={default,yes,no}@:>@])],
 369 ENABLE_LD=$enableval,
 370 ENABLE_LD=yes)
 371
 372 case "${ENABLE_LD}" in
 373   default)
 374     if test x${default_ld} != x; then
 375       AC_MSG_ERROR([either gold or ld can be the default ld])
 376     fi
 377     ;;
 378   yes)
 379     ;;
 380   no)
 381     if test x${ENABLE_GOLD} != xyes; then
 382       AC_MSG_WARN([neither ld nor gold are enabled])
 383     fi
 384     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 385     ;;
 386   *)
 387     AC_MSG_ERROR([invalid --enable-ld argument])
 388     ;;
 389 esac
 390
 391 # PR gas/19109
 392 # Decide the default method for compressing debug sections.
 393 # Provide a configure time option to override our default.
 394 AC_ARG_ENABLE(compressed_debug_sections,
 395 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 396                 [Enable compressed debug sections for gas, gold or ld by
 397                  default])],
 398 [
 399   if test x"$enable_compressed_debug_sections" = xyes; then
 400     AC_MSG_ERROR([no program with compressed debug sections specified])
 401   fi
 402 ], [enable_compressed_debug_sections=])
 403
 404 # Configure extra directories which are host specific
 405
 406 case "${host}" in
 407   *-cygwin*)
 408     configdirs="$configdirs libtermcap" ;;
 409 esac
 410
 411 # A target can indicate whether a language isn't supported for some reason.
 412 # Only spaces may be used in this macro; not newlines or tabs.
 413 unsupported_languages=
 414
 415 # Remove more programs from consideration, based on the host or
 416 # target this usually means that a port of the program doesn't
 417 # exist yet.
 418
 419 case "${host}" in
 420   i[[3456789]]86-*-msdosdjgpp*)
 421     noconfigdirs="$noconfigdirs tcl tk itcl"
 422     ;;
 423 esac
 424
 425
 426 AC_ARG_ENABLE(libquadmath,
 427 AS_HELP_STRING([--disable-libquadmath],
 428   [do not build libquadmath directory]),
 429 ENABLE_LIBQUADMATH=$enableval,
 430 ENABLE_LIBQUADMATH=yes)
 431 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 432   noconfigdirs="$noconfigdirs target-libquadmath"
 433 fi
 434
 435
 436 AC_ARG_ENABLE(libquadmath-support,
 437 AS_HELP_STRING([--disable-libquadmath-support],
 438   [disable libquadmath support for Fortran]),
 439 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 440 ENABLE_LIBQUADMATH_SUPPORT=yes)
 441 enable_libquadmath_support=
 442 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 443   enable_libquadmath_support=no
 444 fi
 445
 446
 447 AC_ARG_ENABLE(libada,
 448 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 449 ENABLE_LIBADA=$enableval,
 450 ENABLE_LIBADA=yes)
 451 if test "${ENABLE_LIBADA}" != "yes" ; then
 452   noconfigdirs="$noconfigdirs gnattools"
 453 fi
 454
 455 AC_ARG_ENABLE(libssp,
 456 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 457 ENABLE_LIBSSP=$enableval,
 458 ENABLE_LIBSSP=yes)
 459
 460 AC_ARG_ENABLE(libstdcxx,
 461 AS_HELP_STRING([--disable-libstdcxx],
 462   [do not build libstdc++-v3 directory]),
 463 ENABLE_LIBSTDCXX=$enableval,
 464 ENABLE_LIBSTDCXX=default)
 465 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 466   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 467 fi]
 468
 469 # If this is accelerator compiler and its target is intelmic we enable
 470 # target liboffloadmic by default.  If this is compiler with offloading
 471 # for intelmic we enable host liboffloadmic by default.  Otherwise
 472 # liboffloadmic is disabled by default.
 473 AC_ARG_ENABLE([liboffloadmic],
 474 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 475                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 476 [case "$enableval" in
 477   no | host | target)
 478     enable_liboffloadmic=$enableval ;;
 479   *)
 480     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 481 esac],
 482 [if test x"$enable_as_accelerator_for" != x; then
 483   case "${target}" in
 484     *-intelmic-* | *-intelmicemul-*)
 485       enable_liboffloadmic=target
 486       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 487       ;;
 488     *)
 489       enable_liboffloadmic=no
 490       ;;
 491   esac
 492 else
 493   case "${enable_offload_targets}" in
 494     *-intelmic-* | *-intelmicemul-*)
 495       enable_liboffloadmic=host
 496       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 497       ;;
 498     *)
 499       enable_liboffloadmic=no
 500       ;;
 501     esac
 502 fi])
 503 AC_SUBST(extra_liboffloadmic_configure_flags)
 504
 505 # Enable libgomp by default on hosted POSIX systems, and a few others.
 506 if test x$enable_libgomp = x ; then
 507     case "${target}" in
 508     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 509         ;;
 510     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 511         ;;
 512     *-*-solaris2* | *-*-hpux11*)
 513         ;;
 514     *-*-darwin* | *-*-aix*)
 515         ;;
 516     nvptx*-*-*)
 517         ;;
 518     *)
 519         noconfigdirs="$noconfigdirs target-libgomp"
 520         ;;
 521     esac
 522 fi
 523
 524 # Disable libatomic on unsupported systems.
 525 if test -d ${srcdir}/libatomic; then
 526     if test x$enable_libatomic = x; then
 527         AC_MSG_CHECKING([for libatomic support])
 528         if (srcdir=${srcdir}/libatomic; \
 529                 . ${srcdir}/configure.tgt; \
 530                 test -n "$UNSUPPORTED")
 531         then
 532             AC_MSG_RESULT([no])
 533             noconfigdirs="$noconfigdirs target-libatomic"
 534         else
 535             AC_MSG_RESULT([yes])
 536         fi
 537     fi
 538 fi
 539
 540 # Disable libcilkrts on unsupported systems.
 541 if test -d ${srcdir}/libcilkrts; then
 542     if test x$enable_libcilkrts = x; then
 543         AC_MSG_CHECKING([for libcilkrts support])
 544         if (srcdir=${srcdir}/libcilkrts; \
 545                 . ${srcdir}/configure.tgt; \
 546                 test -n "$UNSUPPORTED")
 547         then
 548             AC_MSG_RESULT([no])
 549             noconfigdirs="$noconfigdirs target-libcilkrts"
 550         else
 551             AC_MSG_RESULT([yes])
 552         fi
 553     fi
 554 fi
 555
 556 # Disable liboffloadmic on unsupported systems.
 557 if test -d ${srcdir}/liboffloadmic; then
 558     if test x$enable_liboffloadmic != xno; then
 559         AC_MSG_CHECKING([for liboffloadmic support])
 560         if (srcdir=${srcdir}/liboffloadmic; \
 561                 . ${srcdir}/configure.tgt; \
 562                 test -n "$UNSUPPORTED")
 563         then
 564             AC_MSG_RESULT([no])
 565             noconfigdirs="$noconfigdirs target-liboffloadmic"
 566         else
 567             AC_MSG_RESULT([yes])
 568         fi
 569     fi
 570 fi
 571
 572 # Disable libitm on unsupported systems.
 573 if test -d ${srcdir}/libitm; then
 574     if test x$enable_libitm = x; then
 575         AC_MSG_CHECKING([for libitm support])
 576         if (srcdir=${srcdir}/libitm; \
 577                 . ${srcdir}/configure.tgt; \
 578                 test -n "$UNSUPPORTED")
 579         then
 580             AC_MSG_RESULT([no])
 581             noconfigdirs="$noconfigdirs target-libitm"
 582         else
 583             AC_MSG_RESULT([yes])
 584         fi
 585     fi
 586 fi
 587
 588 # Disable libsanitizer on unsupported systems.
 589 if test -d ${srcdir}/libsanitizer; then
 590     if test x$enable_libsanitizer = x; then
 591         AC_MSG_CHECKING([for libsanitizer support])
 592         if (srcdir=${srcdir}/libsanitizer; \
 593                 . ${srcdir}/configure.tgt; \
 594                 test -n "$UNSUPPORTED")
 595         then
 596             AC_MSG_RESULT([no])
 597             noconfigdirs="$noconfigdirs target-libsanitizer"
 598         else
 599             AC_MSG_RESULT([yes])
 600         fi
 601     fi
 602 fi
 603
 604 # Disable libvtv on unsupported systems.
 605 if test -d ${srcdir}/libvtv; then
 606     if test x$enable_libvtv = x; then
 607         AC_MSG_CHECKING([for libvtv support])
 608         if (srcdir=${srcdir}/libvtv; \
 609                 . ${srcdir}/configure.tgt; \
 610                 test "$VTV_SUPPORTED" != "yes")
 611         then
 612             AC_MSG_RESULT([no])
 613             noconfigdirs="$noconfigdirs target-libvtv"
 614         else
 615             AC_MSG_RESULT([yes])
 616         fi
 617     fi
 618 fi
 619
 620
 621 # Enable libmpx on supported systems by request.
 622 if test -d ${srcdir}/libmpx; then
 623     if test x$enable_libmpx = x; then
 624        AC_MSG_CHECKING([for libmpx support])
 625        if (srcdir=${srcdir}/libmpx; \
 626                . ${srcdir}/configure.tgt; \
 627                test "$LIBMPX_SUPPORTED" != "yes")
 628        then
 629            AC_MSG_RESULT([no])
 630            noconfigdirs="$noconfigdirs target-libmpx"
 631        else
 632            AC_MSG_RESULT([yes])
 633        fi
 634     fi
 635 fi
 636
 637 # Disable libhsail-rt on unsupported systems.
 638 if test -d ${srcdir}/libhsail-rt; then
 639     if test x$enable_libhsail_rt = x; then
 640         AC_MSG_CHECKING([for libhsail-rt support])
 641         if (srcdir=${srcdir}/libhsail-rt; \
 642                 . ${srcdir}/configure.tgt; \
 643                 test -n "$UNSUPPORTED")
 644         then
 645             AC_MSG_RESULT([no])
 646             unsupported_languages="$unsupported_languages brig"
 647             # This implicitly disables also target-libhsail-rt as it won't
 648             # get added to the build without BRIG FE.
 649         else
 650             AC_MSG_RESULT([yes])
 651         fi
 652     fi
 653 fi
 654
 655
 656 # Disable libquadmath for some systems.
 657 case "${target}" in
 658   avr-*-*)
 659     noconfigdirs="$noconfigdirs target-libquadmath"
 660     ;;
 661   # libquadmath is unused on AIX and libquadmath build process use of
 662   # LD_LIBRARY_PATH can break AIX bootstrap.
 663   powerpc-*-aix* | rs6000-*-aix*)
 664     noconfigdirs="$noconfigdirs target-libquadmath"
 665     ;;
 666 esac
 667
 668 # Disable libssp for some systems.
 669 case "${target}" in
 670   avr-*-*)
 671     # No hosted I/O support.
 672     noconfigdirs="$noconfigdirs target-libssp"
 673     ;;
 674   powerpc-*-aix* | rs6000-*-aix*)
 675     noconfigdirs="$noconfigdirs target-libssp"
 676     ;;
 677   rl78-*-*)
 678     # libssp uses a misaligned load to trigger a fault, but the RL78
 679     # doesn't fault for those - instead, it gives a build-time error
 680     # for explicit misaligned loads.
 681     noconfigdirs="$noconfigdirs target-libssp"
 682     ;;
 683   visium-*-*)
 684     # No hosted I/O support.
 685     noconfigdirs="$noconfigdirs target-libssp"
 686     ;;
 687 esac
 688
 689 # Disable libstdc++-v3 for some systems.
 690 # Allow user to override this if they pass --enable-libstdc++-v3
 691 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 692   case "${target}" in
 693     *-*-vxworks*)
 694       # VxWorks uses the Dinkumware C++ library.
 695       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 696       ;;
 697     arm*-wince-pe*)
 698       # the C++ libraries don't build on top of CE's C libraries
 699       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 700       ;;
 701     avr-*-*)
 702       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 703       ;;
 704     ft32-*-*)
 705       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 706       ;;
 707   esac
 708 fi
 709
 710 # Disable Fortran for some systems.
 711 case "${target}" in
 712   mmix-*-*)
 713     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 714     unsupported_languages="$unsupported_languages fortran"
 715     ;;
 716 esac
 717
 718 # Disable libffi for some systems.
 719 case "${target}" in
 720   powerpc-*-darwin*)
 721     ;;
 722   i[[3456789]]86-*-darwin*)
 723     ;;
 724   x86_64-*-darwin[[912]]*)
 725     ;;
 726   *-*-darwin*)
 727     noconfigdirs="$noconfigdirs target-libffi"
 728     ;;
 729   *-*-netware*)
 730     noconfigdirs="$noconfigdirs target-libffi"
 731     ;;
 732   *-*-phoenix*)
 733     noconfigdirs="$noconfigdirs target-libffi"
 734     ;;
 735   *-*-rtems*)
 736     noconfigdirs="$noconfigdirs target-libffi"
 737     ;;
 738   *-*-tpf*)
 739     noconfigdirs="$noconfigdirs target-libffi"
 740     ;;
 741   *-*-uclinux*)
 742     noconfigdirs="$noconfigdirs target-libffi"
 743     ;;
 744   *-*-vxworks*)
 745     noconfigdirs="$noconfigdirs target-libffi"
 746     ;;
 747   aarch64*-*-freebsd*)
 748     noconfigdirs="$noconfigdirs target-libffi"
 749     ;;
 750   alpha*-*-*vms*)
 751     noconfigdirs="$noconfigdirs target-libffi"
 752     ;;
 753   arm*-*-freebsd*)
 754     noconfigdirs="$noconfigdirs target-libffi"
 755     ;;
 756   arm-wince-pe)
 757     noconfigdirs="$noconfigdirs target-libffi"
 758     ;;
 759   arm*-*-symbianelf*)
 760     noconfigdirs="$noconfigdirs target-libffi"
 761     ;;
 762   cris-*-* | crisv32-*-*)
 763     case "${target}" in
 764       *-*-linux*)
 765         ;;
 766       *) # See PR46792 regarding target-libffi.
 767         noconfigdirs="$noconfigdirs target-libffi";;
 768     esac
 769     ;;
 770   hppa*64*-*-hpux*)
 771     noconfigdirs="$noconfigdirs target-libffi"
 772     ;;
 773   hppa*-hp-hpux11*)
 774     ;;
 775   hppa*-*-hpux*)
 776     noconfigdirs="$noconfigdirs target-libffi"
 777     ;;
 778   ia64*-*-*vms*)
 779     noconfigdirs="$noconfigdirs target-libffi"
 780     ;;
 781   i[[3456789]]86-w64-mingw*)
 782     noconfigdirs="$noconfigdirs target-libffi"
 783     ;;
 784   i[[3456789]]86-*-mingw*)
 785     noconfigdirs="$noconfigdirs target-libffi"
 786     ;;
 787   x86_64-*-mingw*)
 788     noconfigdirs="$noconfigdirs target-libffi"
 789     ;;
 790   mmix-*-*)
 791     noconfigdirs="$noconfigdirs target-libffi"
 792     ;;
 793   powerpc-*-aix*)
 794     # copied from rs6000-*-* entry
 795     noconfigdirs="$noconfigdirs target-libffi"
 796     ;;
 797   rs6000-*-aix*)
 798     noconfigdirs="$noconfigdirs target-libffi"
 799     ;;
 800   ft32-*-*)
 801     noconfigdirs="$noconfigdirs target-libffi"
 802     ;;
 803   *-*-lynxos*)
 804     noconfigdirs="$noconfigdirs target-libffi"
 805     ;;
 806 esac
 807
 808 # Disable the go frontend on systems where it is known to not work. Please keep
 809 # this in sync with contrib/config-list.mk.
 810 case "${target}" in
 811 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 812     unsupported_languages="$unsupported_languages go"
 813     ;;
 814 esac
 815
 816 # Disable libgo for some systems where it is known to not work.
 817 # For testing, you can easily override this with --enable-libgo.
 818 if test x$enable_libgo = x; then
 819     case "${target}" in
 820     *-*-darwin*)
 821         # PR 46986
 822         noconfigdirs="$noconfigdirs target-libgo"
 823         ;;
 824     *-*-cygwin* | *-*-mingw*)
 825         noconfigdirs="$noconfigdirs target-libgo"
 826         ;;
 827     *-*-aix*)
 828         noconfigdirs="$noconfigdirs target-libgo"
 829         ;;
 830     esac
 831 fi
 832
 833 # Default libgloss CPU subdirectory.
 834 libgloss_dir="$target_cpu"
 835
 836 case "${target}" in
 837   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 838     libgloss_dir=wince
 839     ;;
 840   aarch64*-*-* )
 841     libgloss_dir=aarch64
 842     ;;
 843   arm*-*-*)
 844     libgloss_dir=arm
 845     ;;
 846   cris-*-* | crisv32-*-*)
 847     libgloss_dir=cris
 848     ;;
 849   hppa*-*-*)
 850     libgloss_dir=pa
 851     ;;
 852   i[[3456789]]86-*-*)
 853     libgloss_dir=i386
 854     ;;
 855   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 856     libgloss_dir=m68hc11
 857     ;;
 858   m68*-*-* | fido-*-*)
 859     libgloss_dir=m68k
 860     ;;
 861   mips*-*-*)
 862     libgloss_dir=mips
 863     ;;
 864   powerpc*-*-*)
 865     libgloss_dir=rs6000
 866     ;;
 867   sparc*-*-*)
 868     libgloss_dir=sparc
 869     ;;
 870 esac
 871
 872 # Disable newlib and libgloss for various target OSes.
 873 case "${target}" in
 874   alpha*-dec-osf*)
 875     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 876     ;;
 877   i[[3456789]]86-*-linux*)
 878     # This section makes it possible to build newlib natively on linux.
 879     # If we are using a cross compiler then don't configure newlib.
 880     if test x${is_cross_compiler} != xno ; then
 881       noconfigdirs="$noconfigdirs target-newlib"
 882     fi
 883     noconfigdirs="$noconfigdirs target-libgloss"
 884     # If we are not using a cross compiler, do configure newlib.
 885     # Note however, that newlib will only be configured in this situation
 886     # if the --with-newlib option has been given, because otherwise
 887     # 'target-newlib' will appear in skipdirs.
 888     ;;
 889   i[[3456789]]86-*-rdos*)
 890     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 891     ;;
 892   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 893     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 894     ;;
 895   sparc-*-sunos4*)
 896     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 897     ;;
 898   *-*-aix*)
 899     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 900     ;;
 901   *-*-beos*)
 902     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 903     ;;
 904   *-*-chorusos)
 905     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 906     ;;
 907   *-*-dragonfly*)
 908     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 909     ;;
 910   *-*-freebsd*)
 911     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 912     ;;
 913   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 914     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 915     ;;
 916   *-*-lynxos*)
 917     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 918     ;;
 919   *-*-mingw*)
 920     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 921     ;;
 922   *-*-netbsd*)
 923     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 924     ;;
 925   *-*-netware*)
 926     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 927     ;;
 928   *-*-tpf*)
 929     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 930     ;;
 931   *-*-uclinux*)
 932     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 933     ;;
 934   *-*-vxworks*)
 935     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 936     ;;
 937 esac
 938
 939 case "${target}" in
 940   *-*-chorusos)
 941     ;;
 942   aarch64-*-darwin*)
 943     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 944     noconfigdirs="$noconfigdirs sim target-rda"
 945     ;;
 946   arm-*-darwin*)
 947     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 948     noconfigdirs="$noconfigdirs sim target-rda"
 949     ;;
 950   powerpc-*-darwin*)
 951     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 952     noconfigdirs="$noconfigdirs sim target-rda"
 953     ;;
 954   i[[3456789]]86-*-darwin*)
 955     noconfigdirs="$noconfigdirs ld gprof"
 956     noconfigdirs="$noconfigdirs sim target-rda"
 957     ;;
 958   x86_64-*-darwin[[912]]*)
 959     noconfigdirs="$noconfigdirs ld gas gprof"
 960     noconfigdirs="$noconfigdirs sim target-rda"
 961     ;;
 962   *-*-darwin*)
 963     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 964     noconfigdirs="$noconfigdirs sim target-rda"
 965     ;;
 966   *-*-dragonfly*)
 967     ;;
 968   *-*-freebsd*)
 969     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 970         && test -f /usr/local/include/gmp.h; then
 971       with_gmp=/usr/local
 972     fi
 973     ;;
 974   *-*-kaos*)
 975     # Remove unsupported stuff on all kaOS configurations.
 976     noconfigdirs="$noconfigdirs target-libgloss"
 977     ;;
 978   *-*-netbsd*)
 979     ;;
 980   *-*-netware*)
 981     ;;
 982   *-*-phoenix*)
 983     noconfigdirs="$noconfigdirs target-libgloss"
 984     ;;
 985   *-*-rtems*)
 986     noconfigdirs="$noconfigdirs target-libgloss"
 987     # this is not caught below because this stanza matches earlier
 988     case $target in
 989       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
 990     esac
 991     ;;
 992     # The tpf target doesn't support gdb yet.
 993   *-*-tpf*)
 994     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 995     ;;
 996   *-*-uclinux*)
 997     noconfigdirs="$noconfigdirs target-rda"
 998     ;;
 999   *-*-vxworks*)
1000     ;;
1001   alpha*-dec-osf*)
1002     # ld works, but does not support shared libraries.
1003     # gas doesn't generate exception information.
1004     noconfigdirs="$noconfigdirs gas ld"
1005     ;;
1006   alpha*-*-*vms*)
1007     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1008     ;;
1009   alpha*-*-*)
1010     # newlib is not 64 bit ready
1011     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1012     ;;
1013   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1014     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1015     ;;
1016   arc*-*-*)
1017     noconfigdirs="$noconfigdirs sim"
1018     ;;
1019   arm-*-pe*)
1020     noconfigdirs="$noconfigdirs target-libgloss"
1021     ;;
1022   arm-*-riscix*)
1023     noconfigdirs="$noconfigdirs ld target-libgloss"
1024     ;;
1025   avr-*-*)
1026     if test x${with_avrlibc} != xno; then
1027       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1028     fi
1029     ;;
1030   c4x-*-* | tic4x-*-*)
1031     noconfigdirs="$noconfigdirs target-libgloss"
1032     ;;
1033   tic54x-*-*)
1034     noconfigdirs="$noconfigdirs target-libgloss gdb"
1035     ;;
1036   d10v-*-*)
1037     noconfigdirs="$noconfigdirs target-libgloss"
1038     ;;
1039   d30v-*-*)
1040     noconfigdirs="$noconfigdirs gdb"
1041     ;;
1042   fr30-*-elf*)
1043     noconfigdirs="$noconfigdirs gdb"
1044     ;;
1045   ft32-*-*)
1046     noconfigdirs="$noconfigdirs target-rda gprof"
1047     ;;
1048   moxie-*-*)
1049     noconfigdirs="$noconfigdirs"
1050     ;;
1051   h8300*-*-*)
1052     noconfigdirs="$noconfigdirs target-libgloss"
1053     ;;
1054   h8500-*-*)
1055     noconfigdirs="$noconfigdirs target-libgloss"
1056     ;;
1057   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1058     ;;
1059   hppa*64*-*-hpux*)
1060     noconfigdirs="$noconfigdirs gdb"
1061     ;;
1062   hppa*-*-hpux11*)
1063     noconfigdirs="$noconfigdirs gdb ld"
1064     ;;
1065   hppa*64*-*-linux*)
1066     ;;
1067   hppa*-*-linux*)
1068     ;;
1069   hppa*-*-*elf* | \
1070   hppa*-*-lites* | \
1071   hppa*-*-openbsd* | \
1072   hppa*64*-*-*)
1073     ;;
1074   hppa*-*-pro*)
1075     ;;
1076   hppa*-*-*)
1077     noconfigdirs="$noconfigdirs ld"
1078     ;;
1079   i960-*-*)
1080     noconfigdirs="$noconfigdirs gdb"
1081     ;;
1082   ia64*-*-elf*)
1083     # No gdb support yet.
1084     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1085     ;;
1086   ia64*-**-hpux*)
1087     # No ld support yet.
1088     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1089     ;;
1090   ia64*-*-*vms*)
1091     # No ld support yet.
1092     noconfigdirs="$noconfigdirs libgui itcl ld"
1093     ;;
1094   i[[3456789]]86-w64-mingw*)
1095     ;;
1096   i[[3456789]]86-*-mingw*)
1097     target_configdirs="$target_configdirs target-winsup"
1098     ;;
1099   *-*-cygwin*)
1100     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1101     noconfigdirs="$noconfigdirs target-libgloss"
1102     # always build newlib if winsup directory is present.
1103     if test -d "$srcdir/winsup/cygwin"; then
1104       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1105     elif test -d "$srcdir/newlib"; then
1106       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1107     fi
1108     ;;
1109   i[[3456789]]86-*-pe)
1110     noconfigdirs="$noconfigdirs target-libgloss"
1111     ;;
1112   i[[3456789]]86-*-sco3.2v5*)
1113     # The linker does not yet know about weak symbols in COFF,
1114     # and is not configured to handle mixed ELF and COFF.
1115     noconfigdirs="$noconfigdirs ld target-libgloss"
1116     ;;
1117   i[[3456789]]86-*-sco*)
1118     noconfigdirs="$noconfigdirs gprof target-libgloss"
1119     ;;
1120   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1121     noconfigdirs="$noconfigdirs target-libgloss"
1122     ;;
1123   i[[3456789]]86-*-sysv4*)
1124     noconfigdirs="$noconfigdirs target-libgloss"
1125     ;;
1126   i[[3456789]]86-*-beos*)
1127     noconfigdirs="$noconfigdirs gdb"
1128     ;;
1129   i[[3456789]]86-*-rdos*)
1130     noconfigdirs="$noconfigdirs gdb"
1131     ;;
1132   mmix-*-*)
1133     noconfigdirs="$noconfigdirs gdb"
1134     ;;
1135   mt-*-*)
1136     noconfigdirs="$noconfigdirs sim"
1137     ;;
1138   powerpc-*-aix*)
1139     # copied from rs6000-*-* entry
1140     noconfigdirs="$noconfigdirs gprof"
1141     ;;
1142   powerpc*-*-winnt* | powerpc*-*-pe*)
1143     target_configdirs="$target_configdirs target-winsup"
1144     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1145     # always build newlib.
1146     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1147     ;;
1148     # This is temporary until we can link against shared libraries
1149   powerpcle-*-solaris*)
1150     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1151     ;;
1152   powerpc-*-beos*)
1153     noconfigdirs="$noconfigdirs gdb"
1154     ;;
1155   rs6000-*-lynxos*)
1156     noconfigdirs="$noconfigdirs gprof"
1157     ;;
1158   rs6000-*-aix*)
1159     noconfigdirs="$noconfigdirs gprof"
1160     ;;
1161   rs6000-*-*)
1162     noconfigdirs="$noconfigdirs gprof"
1163     ;;
1164   m68k-apollo-*)
1165     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1166     ;;
1167   microblaze*)
1168     noconfigdirs="$noconfigdirs gprof"
1169     ;;
1170   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1171     if test x$with_newlib = xyes; then
1172       noconfigdirs="$noconfigdirs gprof"
1173     fi
1174     ;;
1175   mips*-*-irix5*)
1176     noconfigdirs="$noconfigdirs gprof target-libgloss"
1177     ;;
1178   mips*-*-irix6*)
1179     noconfigdirs="$noconfigdirs gprof target-libgloss"
1180     ;;
1181   mips*-*-bsd*)
1182     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1183     ;;
1184   mips*-*-linux*)
1185     ;;
1186   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1187   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1188     noconfigdirs="$noconfigdirs ld gas gprof"
1189     ;;
1190   mips*-*-*)
1191     noconfigdirs="$noconfigdirs gprof"
1192     ;;
1193   nvptx*-*-*)
1194     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1195     ;;
1196   or1k*-*-*)
1197     noconfigdirs="$noconfigdirs gdb"
1198     ;;
1199   sh-*-*)
1200     case "${target}" in
1201       sh*-*-elf)
1202          ;;
1203       *)
1204          noconfigdirs="$noconfigdirs target-libgloss" ;;
1205     esac
1206     ;;
1207   sparc-*-sunos4*)
1208     if test x${is_cross_compiler} = xno ; then
1209            use_gnu_ld=no
1210     fi
1211     ;;
1212   tic6x-*-*)
1213     noconfigdirs="$noconfigdirs sim"
1214     ;;
1215   tilepro*-*-* | tilegx*-*-*)
1216     noconfigdirs="$noconfigdirs sim"
1217     ;;
1218   v810-*-*)
1219     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1220     ;;
1221   vax-*-*)
1222     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1223     ;;
1224 esac
1225
1226 # If we aren't building newlib, then don't build libgloss, since libgloss
1227 # depends upon some newlib header files.
1228 case "${noconfigdirs}" in
1229   *target-libgloss*) ;;
1230   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1231 esac
1232
1233 # Work in distributions that contain no compiler tools, like Autoconf.
1234 host_makefile_frag=/dev/null
1235 if test -d ${srcdir}/config ; then
1236 case "${host}" in
1237   i[[3456789]]86-*-msdosdjgpp*)
1238     host_makefile_frag="config/mh-djgpp"
1239     ;;
1240   *-cygwin*)
1241     ACX_CHECK_CYGWIN_CAT_WORKS
1242     host_makefile_frag="config/mh-cygwin"
1243     ;;
1244   *-mingw*)
1245     host_makefile_frag="config/mh-mingw"
1246     ;;
1247   alpha*-linux*)
1248     host_makefile_frag="config/mh-alpha-linux"
1249     ;;
1250   hppa*-hp-hpux10*)
1251     host_makefile_frag="config/mh-pa-hpux10"
1252     ;;
1253   hppa*-hp-hpux*)
1254     host_makefile_frag="config/mh-pa"
1255     ;;
1256   hppa*-*)
1257     host_makefile_frag="config/mh-pa"
1258     ;;
1259   *-*-darwin*)
1260     host_makefile_frag="config/mh-darwin"
1261     ;;
1262   powerpc-*-aix*)
1263     host_makefile_frag="config/mh-ppc-aix"
1264     ;;
1265   rs6000-*-aix*)
1266     host_makefile_frag="config/mh-ppc-aix"
1267     ;;
1268 esac
1269 fi
1270
1271 if test "${build}" != "${host}" ; then
1272   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1273   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1274   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1275   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1276   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1277   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1278   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1279   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1280   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1281   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1282   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1283   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1284 else
1285   AR_FOR_BUILD="\$(AR)"
1286   AS_FOR_BUILD="\$(AS)"
1287   CC_FOR_BUILD="\$(CC)"
1288   CXX_FOR_BUILD="\$(CXX)"
1289   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1290   GOC_FOR_BUILD="\$(GOC)"
1291   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1292   LD_FOR_BUILD="\$(LD)"
1293   NM_FOR_BUILD="\$(NM)"
1294   RANLIB_FOR_BUILD="\$(RANLIB)"
1295   WINDRES_FOR_BUILD="\$(WINDRES)"
1296   WINDMC_FOR_BUILD="\$(WINDMC)"
1297 fi
1298
1299 AC_PROG_CC
1300 AC_PROG_CXX
1301
1302 # We must set the default linker to the linker used by gcc for the correct
1303 # operation of libtool.  If LD is not defined and we are using gcc, try to
1304 # set the LD default to the ld used by gcc.
1305 if test -z "$LD"; then
1306   if test "$GCC" = yes; then
1307     case $build in
1308     *-*-mingw*)
1309       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1310     *)
1311       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1312     esac
1313     case $gcc_prog_ld in
1314     # Accept absolute paths.
1315     [[\\/]* | [A-Za-z]:[\\/]*)]
1316       LD="$gcc_prog_ld" ;;
1317     esac
1318   fi
1319 fi
1320
1321 # Check whether -static-libstdc++ -static-libgcc is supported.
1322 have_static_libs=no
1323 if test "$GCC" = yes; then
1324   saved_LDFLAGS="$LDFLAGS"
1325
1326   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1327   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1328   AC_LANG_PUSH(C++)
1329   AC_LINK_IFELSE([
1330 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1331 #error -static-libstdc++ not implemented
1332 #endif
1333 int main() {}],
1334     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1335     [AC_MSG_RESULT([no])])
1336   AC_LANG_POP(C++)
1337
1338   LDFLAGS="$saved_LDFLAGS"
1339 fi
1340
1341 ACX_PROG_GNAT
1342 ACX_PROG_CMP_IGNORE_INITIAL
1343
1344 AC_ARG_ENABLE([bootstrap],
1345 [AS_HELP_STRING([--enable-bootstrap],
1346                 [enable bootstrapping @<:@yes if native build@:>@])],,
1347 enable_bootstrap=default)
1348
1349 # Issue errors and warnings for invalid/strange bootstrap combinations.
1350 if test -r $srcdir/gcc/configure; then
1351   have_compiler=yes
1352 else
1353   have_compiler=no
1354 fi
1355
1356 case "$have_compiler:$host:$target:$enable_bootstrap" in
1357   *:*:*:no) ;;
1358
1359   # Default behavior.  Enable bootstrap if we have a compiler
1360   # and we are in a native configuration.
1361   yes:$build:$build:default)
1362     enable_bootstrap=yes ;;
1363
1364   *:*:*:default)
1365     enable_bootstrap=no ;;
1366
1367   # We have a compiler and we are in a native configuration, bootstrap is ok
1368   yes:$build:$build:yes)
1369     ;;
1370
1371   # Other configurations, but we have a compiler.  Assume the user knows
1372   # what he's doing.
1373   yes:*:*:yes)
1374     AC_MSG_WARN([trying to bootstrap a cross compiler])
1375     ;;
1376
1377   # No compiler: if they passed --enable-bootstrap explicitly, fail
1378   no:*:*:yes)
1379     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1380
1381   # Fail if wrong command line
1382   *)
1383     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1384     ;;
1385 esac
1386
1387 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1388 # C++98 compiler can still start the bootstrap.
1389 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1390   CXX="$CXX -std=gnu++98"
1391 fi
1392
1393 # Used for setting $lt_cv_objdir
1394 _LT_CHECK_OBJDIR
1395
1396 # Check for GMP, MPFR and MPC
1397 gmplibs="-lmpc -lmpfr -lgmp"
1398 gmpinc=
1399 have_gmp=no
1400
1401 # Specify a location for mpc
1402 # check for this first so it ends up on the link line before mpfr.
1403 AC_ARG_WITH(mpc,
1404 [AS_HELP_STRING([--with-mpc=PATH],
1405                 [specify prefix directory for installed MPC package.
1406                  Equivalent to --with-mpc-include=PATH/include
1407                  plus --with-mpc-lib=PATH/lib])])
1408 AC_ARG_WITH(mpc-include,
1409 [AS_HELP_STRING([--with-mpc-include=PATH],
1410                 [specify directory for installed MPC include files])])
1411 AC_ARG_WITH(mpc-lib,
1412 [AS_HELP_STRING([--with-mpc-lib=PATH],
1413                 [specify directory for the installed MPC library])])
1414
1415 if test "x$with_mpc" != x; then
1416   gmplibs="-L$with_mpc/lib $gmplibs"
1417   gmpinc="-I$with_mpc/include $gmpinc"
1418 fi
1419 if test "x$with_mpc_include" != x; then
1420   gmpinc="-I$with_mpc_include $gmpinc"
1421 fi
1422 if test "x$with_mpc_lib" != x; then
1423   gmplibs="-L$with_mpc_lib $gmplibs"
1424 fi
1425 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1426   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1427   gmpinc='-I$$s/mpc/src '"$gmpinc"
1428   # Do not test the mpc version.  Assume that it is sufficient, since
1429   # it is in the source tree, and the library has not been built yet
1430   # but it would be included on the link line in the version check below
1431   # hence making the test fail.
1432   have_gmp=yes
1433 fi
1434
1435 # Specify a location for mpfr
1436 # check for this first so it ends up on the link line before gmp.
1437 AC_ARG_WITH(mpfr-dir,
1438 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1439 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1440 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1441
1442 AC_ARG_WITH(mpfr,
1443 [AS_HELP_STRING([--with-mpfr=PATH],
1444                 [specify prefix directory for installed MPFR package.
1445                  Equivalent to --with-mpfr-include=PATH/include
1446                  plus --with-mpfr-lib=PATH/lib])])
1447 AC_ARG_WITH(mpfr-include,
1448 [AS_HELP_STRING([--with-mpfr-include=PATH],
1449                 [specify directory for installed MPFR include files])])
1450 AC_ARG_WITH(mpfr-lib,
1451 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1452                 [specify directory for the installed MPFR library])])
1453
1454 if test "x$with_mpfr" != x; then
1455   gmplibs="-L$with_mpfr/lib $gmplibs"
1456   gmpinc="-I$with_mpfr/include $gmpinc"
1457 fi
1458 if test "x$with_mpfr_include" != x; then
1459   gmpinc="-I$with_mpfr_include $gmpinc"
1460 fi
1461 if test "x$with_mpfr_lib" != x; then
1462   gmplibs="-L$with_mpfr_lib $gmplibs"
1463 fi
1464 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1465   # MPFR v3.1.0 moved the sources into a src sub-directory.
1466   if ! test -d ${srcdir}/mpfr/src; then
1467     AC_MSG_ERROR([dnl
1468 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1469   fi
1470   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1471   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1472   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1473   # Do not test the mpfr version.  Assume that it is sufficient, since
1474   # it is in the source tree, and the library has not been built yet
1475   # but it would be included on the link line in the version check below
1476   # hence making the test fail.
1477   have_gmp=yes
1478 fi
1479
1480 # Specify a location for gmp
1481 AC_ARG_WITH(gmp-dir,
1482 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1483 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1484 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1485
1486 AC_ARG_WITH(gmp,
1487 [AS_HELP_STRING([--with-gmp=PATH],
1488                 [specify prefix directory for the installed GMP package.
1489                  Equivalent to --with-gmp-include=PATH/include
1490                  plus --with-gmp-lib=PATH/lib])])
1491 AC_ARG_WITH(gmp-include,
1492 [AS_HELP_STRING([--with-gmp-include=PATH],
1493                 [specify directory for installed GMP include files])])
1494 AC_ARG_WITH(gmp-lib,
1495 [AS_HELP_STRING([--with-gmp-lib=PATH],
1496                 [specify directory for the installed GMP library])])
1497
1498
1499 if test "x$with_gmp" != x; then
1500   gmplibs="-L$with_gmp/lib $gmplibs"
1501   gmpinc="-I$with_gmp/include $gmpinc"
1502 fi
1503 if test "x$with_gmp_include" != x; then
1504   gmpinc="-I$with_gmp_include $gmpinc"
1505 fi
1506 if test "x$with_gmp_lib" != x; then
1507   gmplibs="-L$with_gmp_lib $gmplibs"
1508 fi
1509 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1510   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1511   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1512   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1513   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1514   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1515   # Do not test the gmp version.  Assume that it is sufficient, since
1516   # it is in the source tree, and the library has not been built yet
1517   # but it would be included on the link line in the version check below
1518   # hence making the test fail.
1519   have_gmp=yes
1520 fi
1521
1522 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1523   have_gmp=yes
1524   saved_CFLAGS="$CFLAGS"
1525   CFLAGS="$CFLAGS $gmpinc"
1526   # Check for the recommended and required versions of GMP.
1527   AC_MSG_CHECKING([for the correct version of gmp.h])
1528   AC_TRY_COMPILE([#include "gmp.h"],[
1529   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1530   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1531   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1532   choke me
1533   #endif
1534   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1535   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1536   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1537   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1538   choke me
1539   #endif
1540   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1541    [AC_MSG_RESULT([no]); have_gmp=no])
1542
1543   # If we have GMP, check the MPFR version.
1544   if test x"$have_gmp" = xyes; then
1545     # Check for the recommended and required versions of MPFR.
1546     AC_MSG_CHECKING([for the correct version of mpfr.h])
1547     AC_TRY_COMPILE([#include <gmp.h>
1548     #include <mpfr.h>],[
1549     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1550     choke me
1551     #endif
1552     ], [AC_TRY_COMPILE([#include <gmp.h>
1553     #include <mpfr.h>],[
1554     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1555     choke me
1556     #endif
1557     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1558      [AC_MSG_RESULT([no]); have_gmp=no])
1559   fi
1560
1561   # Check for the MPC header version.
1562   if test x"$have_gmp" = xyes ; then
1563     # Check for the recommended and required versions of MPC.
1564     AC_MSG_CHECKING([for the correct version of mpc.h])
1565     AC_TRY_COMPILE([#include <mpc.h>],[
1566     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1567     choke me
1568     #endif
1569     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1570     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1571     choke me
1572     #endif
1573     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1574      [AC_MSG_RESULT([no]); have_gmp=no])
1575   fi
1576
1577   # Now check the MPFR library.
1578   if test x"$have_gmp" = xyes; then
1579     saved_LIBS="$LIBS"
1580     LIBS="$LIBS $gmplibs"
1581     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1582     AC_TRY_LINK([#include <mpc.h>],[
1583     mpfr_t n;
1584     mpfr_t x;
1585     mpc_t c;
1586     int t;
1587     mpfr_init (n);
1588     mpfr_init (x);
1589     mpfr_atan2 (n, n, x, GMP_RNDN);
1590     mpfr_erfc (n, x, GMP_RNDN);
1591     mpfr_subnormalize (x, t, GMP_RNDN);
1592     mpfr_clear(n);
1593     mpfr_clear(x);
1594     mpc_init2 (c, 53);
1595     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1596     mpc_cosh (c, c, MPC_RNDNN);
1597     mpc_pow (c, c, c, MPC_RNDNN);
1598     mpc_acosh (c, c, MPC_RNDNN);
1599     mpc_clear (c);
1600     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1601     LIBS="$saved_LIBS"
1602   fi
1603
1604   CFLAGS="$saved_CFLAGS"
1605
1606 # The library versions listed in the error message below should match
1607 # the HARD-minimums enforced above.
1608   if test x$have_gmp != xyes; then
1609     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1610 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1611 their locations.  Source code for these libraries can be found at
1612 their respective hosting sites as well as at
1613 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1614 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1615 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1616 make sure that you have installed both the libraries and the header
1617 files.  They may be located in separate packages.])
1618   fi
1619 fi
1620
1621 # Flags needed for both GMP, MPFR and/or MPC.
1622 AC_SUBST(gmplibs)
1623 AC_SUBST(gmpinc)
1624 AC_SUBST(extra_mpfr_configure_flags)
1625 AC_SUBST(extra_mpc_gmp_configure_flags)
1626 AC_SUBST(extra_mpc_mpfr_configure_flags)
1627 AC_SUBST(extra_isl_gmp_configure_flags)
1628
1629 # Libraries to use for stage1 or when not bootstrapping.
1630 AC_ARG_WITH(stage1-libs,
1631 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1632 [if test "$withval" = "no" -o "$withval" = "yes"; then
1633    stage1_libs=
1634  else
1635    stage1_libs=$withval
1636  fi],
1637 [stage1_libs=])
1638 AC_SUBST(stage1_libs)
1639
1640 # Linker flags to use for stage1 or when not bootstrapping.
1641 AC_ARG_WITH(stage1-ldflags,
1642 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1643 [if test "$withval" = "no" -o "$withval" = "yes"; then
1644    stage1_ldflags=
1645  else
1646    stage1_ldflags=$withval
1647  fi],
1648 [stage1_ldflags=
1649  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1650  # if supported.  But if the user explicitly specified the libraries to use,
1651  # trust that they are doing what they want.
1652  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1653    stage1_ldflags="-static-libstdc++ -static-libgcc"
1654  fi])
1655 AC_SUBST(stage1_ldflags)
1656
1657 # Libraries to use for stage2 and later builds.
1658 AC_ARG_WITH(boot-libs,
1659 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1660 [if test "$withval" = "no" -o "$withval" = "yes"; then
1661    poststage1_libs=
1662  else
1663    poststage1_libs=$withval
1664  fi],
1665 [poststage1_libs=])
1666 AC_SUBST(poststage1_libs)
1667
1668 # Linker flags to use for stage2 and later builds.
1669 AC_ARG_WITH(boot-ldflags,
1670 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1671                 [linker flags for stage2 and later])],
1672 [if test "$withval" = "no" -o "$withval" = "yes"; then
1673    poststage1_ldflags=
1674  else
1675    poststage1_ldflags=$withval
1676  fi],
1677 [poststage1_ldflags=
1678  # In stages 2 and 3, default to linking libstdc++ and libgcc
1679  # statically.  But if the user explicitly specified the libraries to
1680  # use, trust that they are doing what they want.
1681  if test "$poststage1_libs" = ""; then
1682    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1683  fi])
1684 AC_SUBST(poststage1_ldflags)
1685
1686 # GCC GRAPHITE dependency isl.
1687 # Basic setup is inlined here, actual checks are in config/isl.m4
1688
1689 AC_ARG_WITH(isl,
1690   [AS_HELP_STRING(
1691    [--with-isl=PATH],
1692    [Specify prefix directory for the installed isl package.
1693     Equivalent to --with-isl-include=PATH/include
1694     plus --with-isl-lib=PATH/lib])])
1695
1696 # Treat --without-isl as a request to disable
1697 # GRAPHITE support and skip all following checks.
1698 if test "x$with_isl" != "xno"; then
1699   # Check for isl
1700   dnl Provide configure switches and initialize islinc & isllibs
1701   dnl with user input.
1702   ISL_INIT_FLAGS
1703   dnl The versions of isl that work for Graphite
1704   ISL_CHECK_VERSION()
1705   dnl Only execute fail-action, if isl has been requested.
1706   ISL_IF_FAILED([
1707     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1708 fi
1709
1710 # If the isl check failed, disable builds of in-tree variant of isl
1711 if test "x$with_isl" = xno ||
1712    test "x$gcc_cv_isl" = xno; then
1713   noconfigdirs="$noconfigdirs isl"
1714   islinc=
1715 fi
1716
1717 AC_SUBST(isllibs)
1718 AC_SUBST(islinc)
1719
1720 # Check for LTO support.
1721 AC_ARG_ENABLE(lto,
1722 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1723 enable_lto=$enableval,
1724 enable_lto=yes; default_enable_lto=yes)
1725
1726 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1727   build_lto_plugin=yes
1728 ],[if test x"$default_enable_lto" = x"yes" ; then
1729     case $target in
1730       *-apple-darwin[[912]]* | *-cygwin* | *-mingw* | *djgpp*) ;;
1731       # On other non-ELF platforms, LTO has yet to be validated.
1732       *) enable_lto=no ;;
1733     esac
1734   else
1735   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1736   # It would also be nice to check the binutils support, but we don't
1737   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1738   # warn during gcc/ subconfigure; unless you're bootstrapping with
1739   # -flto it won't be needed until after installation anyway.
1740     case $target in
1741       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1742       *) if test x"$enable_lto" = x"yes"; then
1743         AC_MSG_ERROR([LTO support is not enabled for this target.])
1744         fi
1745       ;;
1746     esac
1747   fi
1748   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1749   # Build it unless LTO was explicitly disabled.
1750   case $target in
1751     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1752     *) ;;
1753   esac
1754 ])
1755
1756 AC_ARG_ENABLE(linker-plugin-configure-flags,
1757   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1758     [additional flags for configuring linker plugins @<:@none@:>@])],
1759   extra_linker_plugin_configure_flags=$enableval,
1760   extra_linker_plugin_configure_flags=)
1761 AC_SUBST(extra_linker_plugin_configure_flags)
1762 AC_ARG_ENABLE(linker-plugin-flags,
1763   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1764     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1765   extra_linker_plugin_flags=$enableval,
1766   extra_linker_plugin_flags=)
1767 AC_SUBST(extra_linker_plugin_flags)
1768
1769 # Enable --enable-host-shared.
1770 # Checked early to determine whether jit is an 'all' language
1771 AC_ARG_ENABLE(host-shared,
1772 [AS_HELP_STRING([--enable-host-shared],
1773                 [build host code as shared libraries])],
1774 [host_shared=$enableval], [host_shared=no])
1775 AC_SUBST(host_shared)
1776
1777 # By default, C and C++ are the only stage 1 languages.
1778 stage1_languages=,c,
1779
1780 # Target libraries that we bootstrap.
1781 bootstrap_target_libs=,target-libgcc,
1782
1783 # Figure out what language subdirectories are present.
1784 # Look if the user specified --enable-languages="..."; if not, use
1785 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1786 # go away some day.
1787 # NB:  embedded tabs in this IF block -- do not untabify
1788 if test -d ${srcdir}/gcc; then
1789   if test x"${enable_languages+set}" != xset; then
1790     if test x"${LANGUAGES+set}" = xset; then
1791       enable_languages="${LANGUAGES}"
1792         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1793     else
1794       enable_languages=default
1795     fi
1796   else
1797     if test x"${enable_languages}" = x ||
1798        test x"${enable_languages}" = xyes;
1799        then
1800       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1801       exit 1
1802     fi
1803   fi
1804   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1805
1806   # 'f95' is the old name for the 'fortran' language. We issue a warning
1807   # and make the substitution.
1808   case ,${enable_languages}, in
1809     *,f95,*)
1810       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1811       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1812       ;;
1813   esac
1814
1815   # If bootstrapping, C++ must be enabled.
1816   case ",$enable_languages,:$enable_bootstrap" in
1817     *,c++,*:*) ;;
1818     *:yes)
1819       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1820         enable_languages="${enable_languages},c++"
1821       else
1822         AC_MSG_ERROR([bootstrapping requires c++ sources])
1823       fi
1824       ;;
1825   esac
1826
1827   # First scan to see if an enabled language requires some other language.
1828   # We assume that a given config-lang.in will list all the language
1829   # front ends it requires, even if some are required indirectly.
1830   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1831     case ${lang_frag} in
1832       ..) ;;
1833       # The odd quoting in the next line works around
1834       # an apparent bug in bash 1.12 on linux.
1835       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1836       *)
1837         # From the config-lang.in, get $language, $lang_requires, and
1838         # $lang_requires_boot_languages.
1839         language=
1840         lang_requires=
1841         lang_requires_boot_languages=
1842         . ${lang_frag}
1843         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1844           case ,${enable_languages}, in
1845             *,$other,*) ;;
1846             *,default,*) ;;
1847             *,all,*) ;;
1848             *,$language,*)
1849               echo " \`$other' language required by \`$language'; enabling" 1>&2
1850               enable_languages="${enable_languages},${other}"
1851               ;;
1852           esac
1853         done
1854         for other in ${lang_requires_boot_languages} ; do
1855           if test "$other" != "c"; then
1856             case ,${enable_stage1_languages}, in
1857               *,$other,*) ;;
1858               *,default,*) ;;
1859               *,all,*) ;;
1860               *)
1861                 case ,${enable_languages}, in
1862                   *,$language,*)
1863                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1864                     enable_stage1_languages="$enable_stage1_languages,${other}"
1865                     ;;
1866                 esac
1867                 ;;
1868             esac
1869           fi
1870         done
1871         ;;
1872     esac
1873   done
1874
1875   new_enable_languages=,c,
1876
1877   # If LTO is enabled, add the LTO front end.
1878   if test "$enable_lto" = "yes" ; then
1879     case ,${enable_languages}, in
1880       *,lto,*) ;;
1881       *) enable_languages="${enable_languages},lto" ;;
1882     esac
1883     if test "${build_lto_plugin}" = "yes" ; then
1884       configdirs="$configdirs lto-plugin"
1885     fi
1886   fi
1887
1888   # If we're building an offloading compiler, add the LTO front end.
1889   if test x"$enable_as_accelerator_for" != x ; then
1890     case ,${enable_languages}, in
1891       *,lto,*) ;;
1892       *) enable_languages="${enable_languages},lto" ;;
1893     esac
1894   fi
1895
1896   missing_languages=`echo ",$enable_languages," | sed -e s/,default,/,/ -e s/,all,/,/ -e s/,c,/,/ `
1897   potential_languages=,c,
1898
1899   enabled_target_libs=
1900   disabled_target_libs=
1901
1902   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1903     case ${lang_frag} in
1904       ..) ;;
1905       # The odd quoting in the next line works around
1906       # an apparent bug in bash 1.12 on linux.
1907       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1908       *)
1909         # From the config-lang.in, get $language, $target_libs,
1910         # $lang_dirs, $boot_language, and $build_by_default
1911         language=
1912         target_libs=
1913         lang_dirs=
1914         subdir_requires=
1915         boot_language=no
1916         build_by_default=yes
1917         . ${lang_frag}
1918         if test x${language} = x; then
1919           echo "${lang_frag} doesn't set \$language." 1>&2
1920           exit 1
1921         fi
1922
1923         if test "$language" = "c++"; then
1924           boot_language=yes
1925         fi
1926
1927         add_this_lang=no
1928         # C is always enabled, so no need to add it again
1929         if test "$language" != "c"; then
1930           case ,${enable_languages}, in
1931             *,${language},*)
1932               # Language was explicitly selected; include it
1933               add_this_lang=yes
1934               ;;
1935             *,all,*)
1936               # All languages are enabled
1937               add_this_lang=all
1938               ;;
1939             *,default,*)
1940               # 'default' was selected, select it if it is a default language
1941               add_this_lang=${build_by_default}
1942               ;;
1943           esac
1944         fi
1945
1946         # Disable languages that need other directories if these aren't available.
1947         for i in $subdir_requires; do
1948           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1949           case ${add_this_lang} in
1950             yes)
1951               # Specifically requested language; tell them.
1952               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1953               ;;
1954             all)
1955               AC_MSG_WARN([The gcc/$i directory contains parts of $language but is missing])
1956               add_this_lang=unsupported
1957               ;;
1958             *)
1959               # Silently disable.
1960               add_this_lang=unsupported
1961               ;;
1962           esac
1963         done
1964
1965         # Disable Ada if no preexisting GNAT is available.
1966         case ${add_this_lang}:${language}:${have_gnat} in
1967           yes:ada:no)
1968             # Specifically requested language; tell them.
1969             AC_MSG_ERROR([GNAT is required to build $language])
1970             ;;
1971           all:ada:no)
1972             AC_MSG_WARN([GNAT is required to build $language])
1973             add_this_lang=unsupported
1974             ;;
1975           *:ada:no)
1976             # Silently disable.
1977             add_this_lang=unsupported
1978             ;;
1979         esac
1980
1981         # Disable jit if -enable-host-shared not specified
1982         case ${add_this_lang}:${language}:${host_shared} in
1983           yes:jit:no)
1984             # PR jit/64780: explicitly specify --enable-host-shared
1985             AC_MSG_ERROR([
1986 Enabling language "jit" requires --enable-host-shared.
1987
1988 --enable-host-shared typically slows the rest of the compiler down by
1989 a few %, so you must explicitly enable it.
1990
1991 If you want to build both the jit and the regular compiler, it is often
1992 best to do this via two separate configure/builds, in separate
1993 directories, to avoid imposing the performance cost of
1994 --enable-host-shared on the regular compiler.])
1995             ;;
1996           all:jit:no)
1997             AC_MSG_WARN([--enable-host-shared required to build $language])
1998             add_this_lang=unsupported
1999             ;;
2000           *:jit:no)
2001             # Silently disable.
2002             add_this_lang=unsupported
2003             ;;
2004         esac
2005
2006         # Disable a language that is unsupported by the target.
2007         case "${add_this_lang}: $unsupported_languages " in
2008           no:*) ;;
2009           unsupported:*) ;;
2010           *:*" $language "*)
2011             AC_MSG_WARN([${language} not supported for this target])
2012             add_this_lang=unsupported
2013             ;;
2014         esac
2015
2016         case $add_this_lang in
2017           unsupported)
2018             # Remove language-dependent dirs.
2019             disabled_target_libs="$disabled_target_libs $target_libs"
2020             noconfigdirs="$noconfigdirs $lang_dirs"
2021             ;;
2022           no)
2023             # Remove language-dependent dirs; still show language as supported.
2024             disabled_target_libs="$disabled_target_libs $target_libs"
2025             noconfigdirs="$noconfigdirs $lang_dirs"
2026             potential_languages="${potential_languages}${language},"
2027             ;;
2028           all|yes)
2029             new_enable_languages="${new_enable_languages}${language},"
2030             potential_languages="${potential_languages}${language},"
2031             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2032             enabled_target_libs="$enabled_target_libs $target_libs"
2033             case "${boot_language}:,$enable_stage1_languages," in
2034               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2035                 # Add to (comma-separated) list of stage 1 languages.
2036                 case ",$stage1_languages," in
2037                   *,$language,* | ,yes, | ,all,) ;;
2038                   *) stage1_languages="${stage1_languages}${language}," ;;
2039                 esac
2040                 # We need to bootstrap any supporting libraries.
2041                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2042                 ;;
2043             esac
2044             ;;
2045         esac
2046         ;;
2047     esac
2048   done
2049
2050   # Add target libraries which are only needed for disabled languages
2051   # to noconfigdirs.
2052   if test -n "$disabled_target_libs"; then
2053     for dir in $disabled_target_libs; do
2054       case " $enabled_target_libs " in
2055       *" ${dir} "*) ;;
2056       *) noconfigdirs="$noconfigdirs $dir" ;;
2057       esac
2058     done
2059   fi
2060
2061   AC_ARG_ENABLE(stage1-languages,
2062   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2063                   [choose additional languages to build during
2064                   stage1.  Mostly useful for compiler development])],
2065   [case ,${enable_stage1_languages}, in
2066     ,no,|,,)
2067       # Set it to something that will have no effect in the loop below
2068       enable_stage1_languages=c ;;
2069     ,yes,)
2070       enable_stage1_languages=`echo $new_enable_languages | \
2071         sed -e "s/^,//" -e "s/,$//" ` ;;
2072     *,all,*)
2073       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2074         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2075   esac
2076
2077   # Add "good" languages from enable_stage1_languages to stage1_languages,
2078   # while "bad" languages go in missing_languages.  Leave no duplicates.
2079   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2080     case $potential_languages in
2081       *,$i,*)
2082         case $stage1_languages in
2083           *,$i,*) ;;
2084           *) stage1_languages="$stage1_languages$i," ;;
2085         esac ;;
2086       *)
2087         case $missing_languages in
2088           *,$i,*) ;;
2089           *) missing_languages="$missing_languages$i," ;;
2090         esac ;;
2091      esac
2092   done])
2093
2094   # Remove leading/trailing commas that were added for simplicity
2095   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2096   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2097   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2098   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2099
2100   if test "x$missing_languages" != x; then
2101     AC_MSG_ERROR([
2102 The following requested languages could not be built: ${missing_languages}
2103 Supported languages are: ${potential_languages}])
2104   fi
2105   if test "x$new_enable_languages" != "x$enable_languages"; then
2106     echo The following languages will be built: ${new_enable_languages}
2107     enable_languages="$new_enable_languages"
2108   fi
2109
2110   AC_SUBST(stage1_languages)
2111   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2112 fi
2113
2114 # Handle --disable-<component> generically.
2115 for dir in $configdirs $build_configdirs $target_configdirs ; do
2116   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2117   varname=`echo $dirname | sed -e s/+/_/g`
2118   if eval test x\${enable_${varname}} "=" xno ; then
2119     noconfigdirs="$noconfigdirs $dir"
2120   fi
2121 done
2122
2123 # Check for Boehm's garbage collector
2124 AC_ARG_ENABLE(objc-gc,
2125 [AS_HELP_STRING([--enable-objc-gc],
2126                 [enable use of Boehm's garbage collector with the
2127                  GNU Objective-C runtime])])
2128 AC_ARG_WITH([target-bdw-gc],
2129 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2130                 [specify prefix directory for installed bdw-gc package.
2131                  Equivalent to --with-target-bdw-gc-include=PATH/include
2132                  plus --with-target-bdw-gc-lib=PATH/lib])])
2133 AC_ARG_WITH([target-bdw-gc-include],
2134 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2135                 [specify directories for installed bdw-gc include files])])
2136 AC_ARG_WITH([target-bdw-gc-lib],
2137 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2138                 [specify directories for installed bdw-gc library])])
2139
2140 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2141   AC_MSG_CHECKING([for bdw garbage collector])
2142   if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2143     dnl no bdw-gw options, assume default locations
2144     AC_MSG_RESULT([using bdw-gc in default locations])
2145   else
2146     dnl bdw-gw options, first error checking, complete checking in libobjc
2147     if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2148       AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2149     elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2150       AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2151     else
2152       AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2153     fi
2154   fi
2155 esac
2156
2157 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2158 case ,${enable_languages}, in
2159   *,c++,*)
2160     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2161     case "${noconfigdirs}" in
2162       *target-libstdc++-v3*)
2163         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2164         ;;
2165       *) ;;
2166     esac
2167     ;;
2168   *)
2169     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2170     ;;
2171 esac
2172
2173 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2174 # $build_configdirs and $target_configdirs.
2175 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2176
2177 notsupp=""
2178 for dir in . $skipdirs $noconfigdirs ; do
2179   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2180   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2181     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2182     if test -r $srcdir/$dirname/configure ; then
2183       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2184         true
2185       else
2186         notsupp="$notsupp $dir"
2187       fi
2188     fi
2189   fi
2190   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2191     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2192     if test -r $srcdir/$dirname/configure ; then
2193       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2194         true
2195       else
2196         notsupp="$notsupp $dir"
2197       fi
2198     fi
2199   fi
2200   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2201     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2202     if test -r $srcdir/$dirname/configure ; then
2203       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2204         true
2205       else
2206         notsupp="$notsupp $dir"
2207       fi
2208     fi
2209   fi
2210 done
2211
2212 # Quietly strip out all directories which aren't configurable in this tree.
2213 # This relies on all configurable subdirectories being autoconfiscated, which
2214 # is now the case.
2215 build_configdirs_all="$build_configdirs"
2216 build_configdirs=
2217 for i in ${build_configdirs_all} ; do
2218   j=`echo $i | sed -e s/build-//g`
2219   if test -f ${srcdir}/$j/configure ; then
2220     build_configdirs="${build_configdirs} $i"
2221   fi
2222 done
2223
2224 configdirs_all="$configdirs"
2225 configdirs=
2226 for i in ${configdirs_all} ; do
2227   if test -f ${srcdir}/$i/configure ; then
2228     configdirs="${configdirs} $i"
2229   fi
2230 done
2231
2232 target_configdirs_all="$target_configdirs"
2233 target_configdirs=
2234 for i in ${target_configdirs_all} ; do
2235   j=`echo $i | sed -e s/target-//g`
2236   if test -f ${srcdir}/$j/configure ; then
2237     target_configdirs="${target_configdirs} $i"
2238   fi
2239 done
2240
2241 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2242 # so we have to add it after the preceding checks.
2243 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2244 then
2245   case " $configdirs " in
2246     *" libiberty "*)
2247       # If we can build libiberty, we can also build libiberty-linker-plugin.
2248       configdirs="$configdirs libiberty-linker-plugin"
2249       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2250         --with-libiberty=../libiberty-linker-plugin";;
2251     *)
2252       AC_MSG_ERROR([libiberty missing]);;
2253   esac
2254 fi
2255
2256 # Sometimes we have special requirements for the host libiberty.
2257 extra_host_libiberty_configure_flags=
2258 extra_host_zlib_configure_flags=
2259 case " $configdirs " in
2260   *" lto-plugin "* | *" libcc1 "*)
2261     # When these are to be built as shared libraries, the same applies to
2262     # libiberty.
2263     extra_host_libiberty_configure_flags=--enable-shared
2264     ;;
2265   *" bfd "*)
2266     # When bfd is to be built as a shared library, the same applies to
2267     # zlib.
2268     if test "$enable_shared" = "yes"; then
2269       extra_host_zlib_configure_flags=--enable-host-shared
2270     fi
2271     ;;
2272 esac
2273 AC_SUBST(extra_host_libiberty_configure_flags)
2274 AC_SUBST(extra_host_zlib_configure_flags)
2275
2276 # Produce a warning message for the subdirs we can't configure.
2277 # This isn't especially interesting in the Cygnus tree, but in the individual
2278 # FSF releases, it's important to let people know when their machine isn't
2279 # supported by the one or two programs in a package.
2280
2281 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2282   # If $appdirs is non-empty, at least one of those directories must still
2283   # be configured, or we error out.  (E.g., if the gas release supports a
2284   # specified target in some subdirs but not the gas subdir, we shouldn't
2285   # pretend that all is well.)
2286   if test -n "$appdirs" ; then
2287     for dir in $appdirs ; do
2288       if test -r $dir/Makefile.in ; then
2289         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2290           appdirs=""
2291           break
2292         fi
2293         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2294           appdirs=""
2295           break
2296         fi
2297       fi
2298     done
2299     if test -n "$appdirs" ; then
2300       echo "*** This configuration is not supported by this package." 1>&2
2301       exit 1
2302     fi
2303   fi
2304   # Okay, some application will build, or we don't care to check.  Still
2305   # notify of subdirs not getting built.
2306   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2307   echo "    ${notsupp}" 1>&2
2308   echo "    (Any other directories should still work fine.)" 1>&2
2309 fi
2310
2311 case "$host" in
2312   *msdosdjgpp*)
2313     enable_gdbtk=no ;;
2314 esac
2315
2316 # To find our prefix, in gcc_cv_tool_prefix.
2317 ACX_TOOL_DIRS
2318
2319 copy_dirs=
2320
2321 AC_ARG_WITH([build-sysroot],
2322   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2323                   [use sysroot as the system root during the build])],
2324   [if test x"$withval" != x ; then
2325      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2326    fi],
2327   [SYSROOT_CFLAGS_FOR_TARGET=])
2328 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2329
2330 AC_ARG_WITH([debug-prefix-map],
2331   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2332                   [map A to B, C to D ... in debug information])],
2333   [if test x"$withval" != x; then
2334      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2335      for debug_map in $withval; do
2336        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2337      done
2338    fi],
2339   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2340 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2341
2342 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2343 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2344 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2345 # We want to ensure that TARGET libraries (which we know are built with
2346 # gcc) are built with "-O2 -g", so include those options when setting
2347 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2348 if test "x$CFLAGS_FOR_TARGET" = x; then
2349   if test "x${is_cross_compiler}" = xyes; then
2350     CFLAGS_FOR_TARGET="-g -O2"
2351   else
2352     CFLAGS_FOR_TARGET=$CFLAGS
2353     case " $CFLAGS " in
2354       *" -O2 "*) ;;
2355       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2356     esac
2357     case " $CFLAGS " in
2358       *" -g "* | *" -g3 "*) ;;
2359       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2360     esac
2361   fi
2362 fi
2363 AC_SUBST(CFLAGS_FOR_TARGET)
2364
2365 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2366   if test "x${is_cross_compiler}" = xyes; then
2367     CXXFLAGS_FOR_TARGET="-g -O2"
2368   else
2369     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2370     case " $CXXFLAGS " in
2371       *" -O2 "*) ;;
2372       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2373     esac
2374     case " $CXXFLAGS " in
2375       *" -g "* | *" -g3 "*) ;;
2376       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2377     esac
2378   fi
2379 fi
2380 AC_SUBST(CXXFLAGS_FOR_TARGET)
2381
2382 AC_SUBST(LDFLAGS_FOR_TARGET)
2383
2384 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2385 # the named directory are copied to $(tooldir)/sys-include.
2386 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2387   if test x${is_cross_compiler} = xno ; then
2388     echo 1>&2 '***' --with-headers is only supported when cross compiling
2389     exit 1
2390   fi
2391   if test x"${with_headers}" != xyes ; then
2392     x=${gcc_cv_tool_prefix}
2393     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2394   fi
2395 fi
2396
2397 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2398 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2399 # are permitted.
2400 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2401   if test x${is_cross_compiler} = xno ; then
2402     echo 1>&2 '***' --with-libs is only supported when cross compiling
2403     exit 1
2404   fi
2405   if test x"${with_libs}" != xyes ; then
2406     # Copy the libraries in reverse order, so that files in the first named
2407     # library override files in subsequent libraries.
2408     x=${gcc_cv_tool_prefix}
2409     for l in ${with_libs}; do
2410       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2411     done
2412   fi
2413 fi
2414
2415 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2416 #
2417 # This is done by determining whether or not the appropriate directory
2418 # is available, and by checking whether or not specific configurations
2419 # have requested that this magic not happen.
2420 #
2421 # The command line options always override the explicit settings in
2422 # configure.ac, and the settings in configure.ac override this magic.
2423 #
2424 # If the default for a toolchain is to use GNU as and ld, and you don't
2425 # want to do that, then you should use the --without-gnu-as and
2426 # --without-gnu-ld options for the configure script.  Similarly, if
2427 # the default is to use the included zlib and you don't want to do that,
2428 # you should use the --with-system-zlib option for the configure script.
2429
2430 if test x${use_gnu_as} = x &&
2431    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2432   with_gnu_as=yes
2433   extra_host_args="$extra_host_args --with-gnu-as"
2434 fi
2435
2436 if test x${use_gnu_ld} = x &&
2437    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2438   with_gnu_ld=yes
2439   extra_host_args="$extra_host_args --with-gnu-ld"
2440 fi
2441
2442 if test x${use_included_zlib} = x &&
2443    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2444   :
2445 else
2446   with_system_zlib=yes
2447   extra_host_args="$extra_host_args --with-system-zlib"
2448 fi
2449
2450 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2451 # can detect this case.
2452
2453 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2454   with_newlib=yes
2455   extra_host_args="$extra_host_args --with-newlib"
2456 fi
2457
2458 # Handle ${copy_dirs}
2459 set fnord ${copy_dirs}
2460 shift
2461 while test $# != 0 ; do
2462   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2463     :
2464   else
2465     echo Copying $1 to $2
2466
2467     # Use the install script to create the directory and all required
2468     # parent directories.
2469     if test -d $2 ; then
2470       :
2471     else
2472       echo >config.temp
2473       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2474     fi
2475
2476     # Copy the directory, assuming we have tar.
2477     # FIXME: Should we use B in the second tar?  Not all systems support it.
2478     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2479
2480     # It is the responsibility of the user to correctly adjust all
2481     # symlinks.  If somebody can figure out how to handle them correctly
2482     # here, feel free to add the code.
2483
2484     echo $1 > $2/COPIED
2485   fi
2486   shift; shift
2487 done
2488
2489 # Determine a target-dependent exec_prefix that the installed
2490 # gcc will search in.  Keep this list sorted by triplet, with
2491 # the *-*-osname triplets last.
2492 md_exec_prefix=
2493 case "${target}" in
2494   i[[34567]]86-pc-msdosdjgpp*)
2495     md_exec_prefix=/dev/env/DJDIR/bin
2496     ;;
2497   *-*-hpux* | \
2498   *-*-nto-qnx* | \
2499   *-*-solaris2*)
2500     md_exec_prefix=/usr/ccs/bin
2501     ;;
2502 esac
2503
2504 extra_arflags_for_target=
2505 extra_nmflags_for_target=
2506 extra_ranlibflags_for_target=
2507 target_makefile_frag=/dev/null
2508 case "${target}" in
2509   spu-*-*)
2510     target_makefile_frag="config/mt-spu"
2511     ;;
2512   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2513     target_makefile_frag="config/mt-sde"
2514     ;;
2515   mipsisa*-*-elfoabi*)
2516     target_makefile_frag="config/mt-mips-elfoabi"
2517     ;;
2518   mips*-*-*linux* | mips*-*-gnu*)
2519     target_makefile_frag="config/mt-mips-gnu"
2520     ;;
2521   nios2-*-elf*)
2522     target_makefile_frag="config/mt-nios2-elf"
2523     ;;
2524   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2525     target_makefile_frag="config/mt-gnu"
2526     ;;
2527   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2528     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2529     # commands to handle both 32-bit and 64-bit objects.  These flags are
2530     # harmless if we're using GNU nm or ar.
2531     extra_arflags_for_target=" -X32_64"
2532     extra_nmflags_for_target=" -B -X32_64"
2533     ;;
2534 esac
2535
2536 alphaieee_frag=/dev/null
2537 case $target in
2538   alpha*-*-*)
2539     # This just makes sure to use the -mieee option to build target libs.
2540     # This should probably be set individually by each library.
2541     alphaieee_frag="config/mt-alphaieee"
2542     ;;
2543 esac
2544
2545 # If --enable-target-optspace always use -Os instead of -O2 to build
2546 # the target libraries, similarly if it is not specified, use -Os
2547 # on selected platforms.
2548 ospace_frag=/dev/null
2549 case "${enable_target_optspace}:${target}" in
2550   yes:*)
2551     ospace_frag="config/mt-ospace"
2552     ;;
2553   :d30v-*)
2554     ospace_frag="config/mt-d30v"
2555     ;;
2556   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2557     ospace_frag="config/mt-ospace"
2558     ;;
2559   no:* | :*)
2560     ;;
2561   *)
2562     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2563     ;;
2564 esac
2565
2566 # Some systems (e.g., one of the i386-aix systems the gas testers are
2567 # using) don't handle "\$" correctly, so don't use it here.
2568 tooldir='${exec_prefix}'/${target_noncanonical}
2569 build_tooldir=${tooldir}
2570
2571 # Create a .gdbinit file which runs the one in srcdir
2572 # and tells GDB to look there for source files.
2573
2574 if test -r ${srcdir}/.gdbinit ; then
2575   case ${srcdir} in
2576     .) ;;
2577     *) cat > ./.gdbinit <<EOF
2578 # ${NO_EDIT}
2579 dir ${srcdir}
2580 dir .
2581 source ${srcdir}/.gdbinit
2582 EOF
2583     ;;
2584   esac
2585 fi
2586
2587 # Make sure that the compiler is able to generate an executable.  If it
2588 # can't, we are probably in trouble.  We don't care whether we can run the
2589 # executable--we might be using a cross compiler--we only care whether it
2590 # can be created.  At this point the main configure script has set CC.
2591 we_are_ok=no
2592 echo "int main () { return 0; }" > conftest.c
2593 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2594 if test $? = 0 ; then
2595   if test -s conftest || test -s conftest.exe ; then
2596     we_are_ok=yes
2597   fi
2598 fi
2599 case $we_are_ok in
2600   no)
2601     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2602     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2603     rm -f conftest*
2604     exit 1
2605     ;;
2606 esac
2607 rm -f conftest*
2608
2609 # Decide which environment variable is used to find dynamic libraries.
2610 case "${host}" in
2611   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2612   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2613   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2614   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2615 esac
2616
2617 # On systems where the dynamic library environment variable is PATH,
2618 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2619 # built executables to PATH.
2620 if test "$RPATH_ENVVAR" = PATH; then
2621   GCC_SHLIB_SUBDIR=/shlib
2622 else
2623   GCC_SHLIB_SUBDIR=
2624 fi
2625
2626 # Adjust the toplevel makefile according to whether bootstrap was selected.
2627 case $enable_bootstrap in
2628   yes)
2629     bootstrap_suffix=bootstrap
2630     BUILD_CONFIG=bootstrap-debug
2631     ;;
2632   no)
2633     bootstrap_suffix=no-bootstrap
2634     BUILD_CONFIG=
2635     ;;
2636 esac
2637
2638 AC_MSG_CHECKING(for default BUILD_CONFIG)
2639
2640 AC_ARG_WITH([build-config],
2641   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2642                   [use config/NAME.mk build configuration])],
2643   [case $with_build_config in
2644    yes) with_build_config= ;;
2645    no) with_build_config= BUILD_CONFIG= ;;
2646    esac])
2647
2648 if test "x${with_build_config}" != x; then
2649   BUILD_CONFIG=$with_build_config
2650 else
2651   case $BUILD_CONFIG in
2652   bootstrap-debug)
2653     if echo "int f (void) { return 0; }" > conftest.c &&
2654        ${CC} -c conftest.c &&
2655        mv conftest.o conftest.o.g0 &&
2656        ${CC} -c -g conftest.c &&
2657        mv conftest.o conftest.o.g &&
2658        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2659       :
2660     else
2661       BUILD_CONFIG=
2662     fi
2663     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2664     ;;
2665   esac
2666 fi
2667 AC_MSG_RESULT($BUILD_CONFIG)
2668 AC_SUBST(BUILD_CONFIG)
2669
2670 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2671 AC_MSG_CHECKING([for --enable-vtable-verify])
2672 AC_ARG_ENABLE(vtable-verify,
2673 [AS_HELP_STRING([--enable-vtable-verify],
2674                 [Enable vtable verification feature])],
2675 [case "$enableval" in
2676  yes) enable_vtable_verify=yes ;;
2677  no)  enable_vtable_verify=no ;;
2678  *)   enable_vtable_verify=no;;
2679  esac],
2680 [enable_vtable_verify=no])
2681 AC_MSG_RESULT($enable_vtable_verify)
2682
2683 # Record target_configdirs and the configure arguments for target and
2684 # build configuration in Makefile.
2685 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2686 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2687 bootstrap_fixincludes=no
2688
2689 # If we are building libgomp, bootstrap it.
2690 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2691   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2692 fi
2693
2694 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2695 # or bootstrap-ubsan, bootstrap it.
2696 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2697   case "$BUILD_CONFIG" in
2698     *bootstrap-asan* | *bootstrap-ubsan* )
2699       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2700       bootstrap_fixincludes=yes
2701       ;;
2702   esac
2703 fi
2704
2705 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2706 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2707    test "$enable_vtable_verify" != no; then
2708   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2709 fi
2710
2711 # If we are building libmpx and $BUILD_CONFIG contains bootstrap-mpx,
2712 # bootstrap it.
2713 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2714   case "$BUILD_CONFIG" in
2715     *bootstrap-mpx* )
2716       bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2717       ;;
2718   esac
2719 fi
2720
2721 # Determine whether gdb needs tk/tcl or not.
2722 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2723 # and in that case we want gdb to be built without tk.  Ugh!
2724 # In fact I believe gdb is the *only* package directly dependent on tk,
2725 # so we should be able to put the 'maybe's in unconditionally and
2726 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2727 # 100% sure that that's safe though.
2728
2729 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2730 case "$enable_gdbtk" in
2731   no)
2732     GDB_TK="" ;;
2733   yes)
2734     GDB_TK="${gdb_tk}" ;;
2735   *)
2736     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2737     # distro.  Eventually someone will fix this and move Insight, nee
2738     # gdbtk to a separate directory.
2739     if test -d ${srcdir}/gdb/gdbtk ; then
2740       GDB_TK="${gdb_tk}"
2741     else
2742       GDB_TK=""
2743     fi
2744     ;;
2745 esac
2746 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2747 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2748
2749 # Strip out unwanted targets.
2750
2751 # While at that, we remove Makefiles if we were started for recursive
2752 # configuration, so that the top-level Makefile reconfigures them,
2753 # like we used to do when configure itself was recursive.
2754
2755 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2756 # but now we're fixing up the Makefile ourselves with the additional
2757 # commands passed to AC_CONFIG_FILES.  Use separate variables
2758 # extrasub-{build,host,target} not because there is any reason to split
2759 # the substitutions up that way, but only to remain below the limit of
2760 # 99 commands in a script, for HP-UX sed.
2761 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2762
2763 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2764   yes:yes:*\ gold\ *:*,c++,*) ;;
2765   yes:yes:*\ gold\ *:*)
2766     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2767     ;;
2768 esac
2769
2770 extrasub_build=
2771 for module in ${build_configdirs} ; do
2772   if test -z "${no_recursion}" \
2773      && test -f ${build_subdir}/${module}/Makefile; then
2774     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2775     rm -f ${build_subdir}/${module}/Makefile
2776   fi
2777   extrasub_build="$extrasub_build
2778 /^@if build-$module\$/d
2779 /^@endif build-$module\$/d
2780 /^@if build-$module-$bootstrap_suffix\$/d
2781 /^@endif build-$module-$bootstrap_suffix\$/d"
2782 done
2783 extrasub_host=
2784 for module in ${configdirs} ; do
2785   if test -z "${no_recursion}"; then
2786     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2787       if test -f ${file}; then
2788         echo 1>&2 "*** removing ${file} to force reconfigure"
2789         rm -f ${file}
2790       fi
2791     done
2792   fi
2793   case ${module},${bootstrap_fixincludes} in
2794     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2795     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2796   esac
2797   extrasub_host="$extrasub_host
2798 /^@if $module\$/d
2799 /^@endif $module\$/d
2800 /^@if $module-$host_bootstrap_suffix\$/d
2801 /^@endif $module-$host_bootstrap_suffix\$/d"
2802 done
2803 extrasub_target=
2804 for module in ${target_configdirs} ; do
2805   if test -z "${no_recursion}" \
2806      && test -f ${target_subdir}/${module}/Makefile; then
2807     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2808     rm -f ${target_subdir}/${module}/Makefile
2809   fi
2810
2811   # We only bootstrap target libraries listed in bootstrap_target_libs.
2812   case $bootstrap_target_libs in
2813     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2814     *) target_bootstrap_suffix=no-bootstrap ;;
2815   esac
2816
2817   extrasub_target="$extrasub_target
2818 /^@if target-$module\$/d
2819 /^@endif target-$module\$/d
2820 /^@if target-$module-$target_bootstrap_suffix\$/d
2821 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2822 done
2823
2824 # Do the final fixup along with target modules.
2825 extrasub_target="$extrasub_target
2826 /^@if /,/^@endif /d"
2827
2828 # Create the serialization dependencies.  This uses a temporary file.
2829
2830 AC_ARG_ENABLE([serial-configure],
2831 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2832                 [force sequential configuration of
2833                  sub-packages for the host, target or build
2834                  machine, or all sub-packages])])
2835
2836 case ${enable_serial_configure} in
2837   yes)
2838     enable_serial_build_configure=yes
2839     enable_serial_host_configure=yes
2840     enable_serial_target_configure=yes
2841     ;;
2842 esac
2843
2844 # These force 'configure's to be done one at a time, to avoid problems
2845 # with contention over a shared config.cache.
2846 rm -f serdep.tmp
2847 echo '# serdep.tmp' > serdep.tmp
2848 olditem=
2849 test "x${enable_serial_build_configure}" = xyes &&
2850 for item in ${build_configdirs} ; do
2851   case ${olditem} in
2852     "") ;;
2853     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2854   esac
2855   olditem=${item}
2856 done
2857 olditem=
2858 test "x${enable_serial_host_configure}" = xyes &&
2859 for item in ${configdirs} ; do
2860   case ${olditem} in
2861     "") ;;
2862     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2863   esac
2864   olditem=${item}
2865 done
2866 olditem=
2867 test "x${enable_serial_target_configure}" = xyes &&
2868 for item in ${target_configdirs} ; do
2869   case ${olditem} in
2870     "") ;;
2871     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2872   esac
2873   olditem=${item}
2874 done
2875 serialization_dependencies=serdep.tmp
2876 AC_SUBST_FILE(serialization_dependencies)
2877
2878 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2879 # target, nonopt, and variable assignments.  These are the ones we
2880 # might not want to pass down to subconfigures.  The exception being
2881 # --cache-file=/dev/null, which is used to turn off the use of cache
2882 # files altogether, and which should be passed on to subconfigures.
2883 # Also strip program-prefix, program-suffix, and program-transform-name,
2884 # so that we can pass down a consistent program-transform-name.
2885 baseargs=
2886 tbaseargs=
2887 keep_next=no
2888 skip_next=no
2889 eval "set -- $ac_configure_args"
2890 for ac_arg
2891 do
2892   if test X"$skip_next" = X"yes"; then
2893     skip_next=no
2894     continue
2895   fi
2896   if test X"$keep_next" = X"yes"; then
2897     case $ac_arg in
2898       *\'*)
2899         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2900     esac
2901     baseargs="$baseargs '$ac_arg'"
2902     tbaseargs="$tbaseargs '$ac_arg'"
2903     keep_next=no
2904     continue
2905   fi
2906
2907   # Handle separated arguments.  Based on the logic generated by
2908   # autoconf 2.59.
2909   case $ac_arg in
2910     *=* | --config-cache | -C | -disable-* | --disable-* \
2911       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2912       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2913       | -with-* | --with-* | -without-* | --without-* | --x)
2914       separate_arg=no
2915       ;;
2916     -*)
2917       separate_arg=yes
2918       ;;
2919     *)
2920       separate_arg=no
2921       ;;
2922   esac
2923
2924   skip_targ=no
2925   case $ac_arg in
2926 changequote(,)
2927   --with-* | --without-*)
2928     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2929
2930     case $libopt in
2931     *[-_]include)
2932       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2933       ;;
2934     *[-_]lib)
2935       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2936       ;;
2937     *)
2938       lib=$libopt
2939       ;;
2940     esac
2941 changequote([,])
2942
2943     case $lib in
2944     mpc | mpfr | gmp | isl)
2945       # If we're processing --with-$lib, --with-$lib-include or
2946       # --with-$lib-lib, for one of the libs above, and target is
2947       # different from host, don't pass the current argument to any
2948       # target library's configure.
2949       if test x$is_cross_compiler = xyes; then
2950         skip_targ=yes
2951       fi
2952       ;;
2953     esac
2954     ;;
2955   esac
2956
2957   case "$ac_arg" in
2958     --cache-file=/dev/null | \
2959     -cache-file=/dev/null )
2960       # Handled here to avoid the test to skip args below.
2961       baseargs="$baseargs '$ac_arg'"
2962       tbaseargs="$tbaseargs '$ac_arg'"
2963       # Assert: $separate_arg should always be no.
2964       keep_next=$separate_arg
2965       ;;
2966     --no*)
2967       continue
2968       ;;
2969     --c* | \
2970     --sr* | \
2971     --ho* | \
2972     --bu* | \
2973     --t* | \
2974     --program-* | \
2975     -cache_file* | \
2976     -srcdir* | \
2977     -host* | \
2978     -build* | \
2979     -target* | \
2980     -program-prefix* | \
2981     -program-suffix* | \
2982     -program-transform-name* )
2983       skip_next=$separate_arg
2984       continue
2985       ;;
2986     -*)
2987       # An option.  Add it.
2988       case $ac_arg in
2989         *\'*)
2990           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2991       esac
2992       baseargs="$baseargs '$ac_arg'"
2993       if test X"$skip_targ" = Xno; then
2994         tbaseargs="$tbaseargs '$ac_arg'"
2995       fi
2996       keep_next=$separate_arg
2997       ;;
2998     *)
2999       # Either a variable assignment, or a nonopt (triplet).  Don't
3000       # pass it down; let the Makefile handle this.
3001       continue
3002       ;;
3003   esac
3004 done
3005 # Remove the initial space we just introduced and, as these will be
3006 # expanded by make, quote '$'.
3007 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3008
3009 # Add in --program-transform-name, after --program-prefix and
3010 # --program-suffix have been applied to it.  Autoconf has already
3011 # doubled dollar signs and backslashes in program_transform_name; we want
3012 # the backslashes un-doubled, and then the entire thing wrapped in single
3013 # quotes, because this will be expanded first by make and then by the shell.
3014 # Also, because we want to override the logic in subdir configure scripts to
3015 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3016 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3017 ${program_transform_name}
3018 EOF_SED
3019 gcc_transform_name=`cat conftestsed.out`
3020 rm -f conftestsed.out
3021 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3022 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3023 if test "$silent" = yes; then
3024   baseargs="$baseargs --silent"
3025   tbaseargs="$tbaseargs --silent"
3026 fi
3027 baseargs="$baseargs --disable-option-checking"
3028 tbaseargs="$tbaseargs --disable-option-checking"
3029
3030 # Record and document user additions to sub configure arguments.
3031 AC_ARG_VAR([build_configargs],
3032            [additional configure arguments for build directories])
3033 AC_ARG_VAR([host_configargs],
3034            [additional configure arguments for host directories])
3035 AC_ARG_VAR([target_configargs],
3036            [additional configure arguments for target directories])
3037
3038 # For the build-side libraries, we just need to pretend we're native,
3039 # and not use the same cache file.  Multilibs are neither needed nor
3040 # desired.  We can't even use the same cache file for all build-side
3041 # libraries, as they're compiled differently; some with C, some with
3042 # C++ or with different feature-enabling options.
3043 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3044
3045 # For host modules, accept cache file option, or specification as blank.
3046 case "${cache_file}" in
3047 "") # empty
3048   cache_file_option="" ;;
3049 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3050   cache_file_option="--cache-file=${cache_file}" ;;
3051 *) # relative path
3052   cache_file_option="--cache-file=../${cache_file}" ;;
3053 esac
3054
3055 # Host dirs don't like to share a cache file either, horribly enough.
3056 # This seems to be due to autoconf 2.5x stupidity.
3057 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3058
3059 target_configargs="$target_configargs ${tbaseargs}"
3060
3061 # Passing a --with-cross-host argument lets the target libraries know
3062 # whether they are being built with a cross-compiler or being built
3063 # native.  However, it would be better to use other mechanisms to make the
3064 # sorts of decisions they want to make on this basis.  Please consider
3065 # this option to be deprecated.  FIXME.
3066 if test x${is_cross_compiler} = xyes ; then
3067   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3068 fi
3069
3070 # Special user-friendly check for native x86_64-linux build, if
3071 # multilib is not explicitly enabled.
3072 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3073   x86_64-*linux*:yes:$build:$build:)
3074     # Make sure we have a development environment that handles 32-bit
3075     dev64=no
3076     echo "int main () { return 0; }" > conftest.c
3077     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3078     if test $? = 0 ; then
3079       if test -s conftest || test -s conftest.exe ; then
3080         dev64=yes
3081       fi
3082     fi
3083     rm -f conftest*
3084     if test x${dev64} != xyes ; then
3085       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.])
3086     fi
3087     ;;
3088 esac
3089
3090 # Default to --enable-multilib.
3091 if test x${enable_multilib} = x ; then
3092   target_configargs="--enable-multilib ${target_configargs}"
3093 fi
3094
3095 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3096 # changed from the earlier setting of with_newlib.
3097 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3098   target_configargs="--with-newlib ${target_configargs}"
3099 fi
3100
3101 # Different target subdirs use different values of certain variables
3102 # (notably CXX).  Worse, multilibs use *lots* of different values.
3103 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3104 # it doesn't automatically accept command-line overrides of them.
3105 # This means it's not safe for target subdirs to share a cache file,
3106 # which is disgusting, but there you have it.  Hopefully this can be
3107 # fixed in future.  It's still worthwhile to use a cache file for each
3108 # directory.  I think.
3109
3110 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3111 # We need to pass --target, as newer autoconf's requires consistency
3112 # for target_alias and gcc doesn't manage it consistently.
3113 target_configargs="--cache-file=./config.cache ${target_configargs}"
3114
3115 FLAGS_FOR_TARGET=
3116 case " $target_configdirs " in
3117  *" newlib "*)
3118   case " $target_configargs " in
3119   *" --with-newlib "*)
3120    case "$target" in
3121     *-cygwin*)
3122       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3123       ;;
3124    esac
3125
3126    # If we're not building GCC, don't discard standard headers.
3127    if test -d ${srcdir}/gcc; then
3128      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3129
3130      if test "${build}" != "${host}"; then
3131        # On Canadian crosses, CC_FOR_TARGET will have already been set
3132        # by `configure', so we won't have an opportunity to add -Bgcc/
3133        # to it.  This is right: we don't want to search that directory
3134        # for binaries, but we want the header files in there, so add
3135        # them explicitly.
3136        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3137
3138        # Someone might think of using the pre-installed headers on
3139        # Canadian crosses, in case the installed compiler is not fully
3140        # compatible with the compiler being built.  In this case, it
3141        # would be better to flag an error than risking having
3142        # incompatible object files being constructed.  We can't
3143        # guarantee that an error will be flagged, but let's hope the
3144        # compiler will do it, when presented with incompatible header
3145        # files.
3146      fi
3147    fi
3148
3149    case "${target}-${is_cross_compiler}" in
3150    i[[3456789]]86-*-linux*-no)
3151       # Here host == target, so we don't need to build gcc,
3152       # so we don't want to discard standard headers.
3153       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3154       ;;
3155    *)
3156       # If we're building newlib, use its generic headers last, but search
3157       # for any libc-related directories first (so make it the last -B
3158       # switch).
3159       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3160
3161       # If we're building libgloss, find the startup file, simulator library
3162       # and linker script.
3163       case " $target_configdirs " in
3164         *" libgloss "*)
3165         # Look for startup file, simulator library and maybe linker script.
3166         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3167         # Look for libnosys.a in case the target needs it.
3168         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3169         # Most targets have the linker script in the source directory.
3170         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3171         ;;
3172       esac
3173       ;;
3174    esac
3175    ;;
3176   esac
3177   ;;
3178 esac
3179
3180 case "$target" in
3181   x86_64-*mingw* | *-w64-mingw*)
3182   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3183   # however, use a symlink named 'mingw' in ${prefix} .
3184     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3185     ;;
3186   *-mingw*)
3187   # MinGW can't be handled as Cygwin above since it does not use newlib.
3188     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3189     ;;
3190 esac
3191
3192 # Allow the user to override the flags for
3193 # our build compiler if desired.
3194 if test x"${build}" = x"${host}" ; then
3195   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3196   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3197   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3198 fi
3199
3200 # On Canadian crosses, we'll be searching the right directories for
3201 # the previously-installed cross compiler, so don't bother to add
3202 # flags for directories within the install tree of the compiler
3203 # being built; programs in there won't even run.
3204 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3205   # Search for pre-installed headers if nothing else fits.
3206   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3207 fi
3208
3209 if test "x${use_gnu_ld}" = x &&
3210    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3211   # Arrange for us to find uninstalled linker scripts.
3212   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3213 fi
3214
3215 # Search for other target-specific linker scripts and such.
3216 case "${target}" in
3217   mep*)
3218     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3219     ;;
3220 esac
3221
3222 # Makefile fragments.
3223 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3224 do
3225   eval fragval=\$$frag
3226   if test $fragval != /dev/null; then
3227     eval $frag=${srcdir}/$fragval
3228   fi
3229 done
3230 AC_SUBST_FILE(host_makefile_frag)
3231 AC_SUBST_FILE(target_makefile_frag)
3232 AC_SUBST_FILE(alphaieee_frag)
3233 AC_SUBST_FILE(ospace_frag)
3234
3235 # Miscellanea: directories, flags, etc.
3236 AC_SUBST(RPATH_ENVVAR)
3237 AC_SUBST(GCC_SHLIB_SUBDIR)
3238 AC_SUBST(tooldir)
3239 AC_SUBST(build_tooldir)
3240 AC_SUBST(CONFIGURE_GDB_TK)
3241 AC_SUBST(GDB_TK)
3242 AC_SUBST(INSTALL_GDB_TK)
3243
3244 # Build module lists & subconfigure args.
3245 AC_SUBST(build_configargs)
3246 AC_SUBST(build_configdirs)
3247
3248 # Host module lists & subconfigure args.
3249 AC_SUBST(host_configargs)
3250 AC_SUBST(configdirs)
3251 AC_SUBST(target_configdirs)
3252
3253 # Target module lists & subconfigure args.
3254 AC_SUBST(target_configargs)
3255
3256
3257 # Build tools.
3258 AC_SUBST(AR_FOR_BUILD)
3259 AC_SUBST(AS_FOR_BUILD)
3260 AC_SUBST(CC_FOR_BUILD)
3261 AC_SUBST(CFLAGS_FOR_BUILD)
3262 AC_SUBST(CXXFLAGS_FOR_BUILD)
3263 AC_SUBST(CXX_FOR_BUILD)
3264 AC_SUBST(DLLTOOL_FOR_BUILD)
3265 AC_SUBST(GFORTRAN_FOR_BUILD)
3266 AC_SUBST(GOC_FOR_BUILD)
3267 AC_SUBST(LDFLAGS_FOR_BUILD)
3268 AC_SUBST(LD_FOR_BUILD)
3269 AC_SUBST(NM_FOR_BUILD)
3270 AC_SUBST(RANLIB_FOR_BUILD)
3271 AC_SUBST(WINDMC_FOR_BUILD)
3272 AC_SUBST(WINDRES_FOR_BUILD)
3273
3274 # Generate default definitions for YACC, M4, LEX and other programs that run
3275 # on the build machine.  These are used if the Makefile can't locate these
3276 # programs in objdir.
3277 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3278
3279 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3280 case " $build_configdirs " in
3281   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3282 esac
3283
3284 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3285 case " $build_configdirs " in
3286   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3287 esac
3288
3289 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3290 case " $build_configdirs " in
3291   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3292 esac
3293
3294 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3295 case " $build_configdirs " in
3296   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3297   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3298 esac
3299
3300 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3301 case " $build_configdirs " in
3302   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3303 esac
3304
3305 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3306 case " $build_configdirs " in
3307   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3308   *)
3309 changequote(,)
3310     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3311     # higher, else we use the "missing" dummy.
3312     if ${MAKEINFO} --version \
3313        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3314       :
3315     else
3316       MAKEINFO="$MISSING makeinfo"
3317     fi
3318     ;;
3319 changequote([,])
3320 esac
3321
3322 # FIXME: expect and dejagnu may become build tools?
3323
3324 AC_CHECK_PROGS(EXPECT, expect, expect)
3325 case " $configdirs " in
3326   *" expect "*)
3327     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3328     ;;
3329 esac
3330
3331 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3332 case " $configdirs " in
3333   *" dejagnu "*)
3334     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3335     ;;
3336 esac
3337
3338
3339 # Host tools.
3340 NCN_STRICT_CHECK_TOOLS(AR, ar)
3341 NCN_STRICT_CHECK_TOOLS(AS, as)
3342 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3343 NCN_STRICT_CHECK_TOOLS(LD, ld)
3344 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3345 NCN_STRICT_CHECK_TOOLS(NM, nm)
3346 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3347 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3348 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3349 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3350 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3351 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3352 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3353 AC_SUBST(CC)
3354 AC_SUBST(CXX)
3355 AC_SUBST(CFLAGS)
3356 AC_SUBST(CXXFLAGS)
3357
3358 # Target tools.
3359 AC_ARG_WITH([build-time-tools],
3360   [AS_HELP_STRING([--with-build-time-tools=PATH],
3361                   [use given path to find target tools during the build])],
3362   [case x"$withval" in
3363      x/*) ;;
3364      *)
3365        with_build_time_tools=
3366        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3367        ;;
3368    esac],
3369   [with_build_time_tools=])
3370
3371 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3372 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3373 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3374 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3375 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3376
3377 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3378 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3379 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3380 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3381 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3382 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3383 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3384 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3385 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3386 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3387 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3388 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3389 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3390
3391 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3392
3393 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3394 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3395 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3396 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3397 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3398                 [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],
3399                 c++)
3400 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3401                 [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],
3402                 c++)
3403 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3404 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3405 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3406                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3407 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3408                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3409 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3410 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3411 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3412 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3413 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3414 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3415 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3416 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3417 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3418 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3419
3420 AC_SUBST(FLAGS_FOR_TARGET)
3421 AC_SUBST(RAW_CXX_FOR_TARGET)
3422
3423 # Certain tools may need extra flags.
3424 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3425 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3426 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3427
3428 # When building target libraries, except in a Canadian cross, we use
3429 # the same toolchain as the compiler we just built.
3430 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3431 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3432 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3433 if test $host = $build; then
3434   case " $configdirs " in
3435     *" gcc "*)
3436       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3437       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3438       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3439       ;;
3440   esac
3441 fi
3442
3443 AC_SUBST(COMPILER_AS_FOR_TARGET)
3444 AC_SUBST(COMPILER_LD_FOR_TARGET)
3445 AC_SUBST(COMPILER_NM_FOR_TARGET)
3446
3447 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3448 AC_ARG_ENABLE(maintainer-mode,
3449 [AS_HELP_STRING([--enable-maintainer-mode],
3450                 [enable make rules and dependencies not useful
3451                  (and sometimes confusing) to the casual installer])],
3452       USE_MAINTAINER_MODE=$enableval,
3453       USE_MAINTAINER_MODE=no)
3454 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3455 AC_SUBST(MAINTAINER_MODE_TRUE)
3456 AC_SUBST(MAINTAINER_MODE_FALSE)
3457 if test "$USE_MAINTAINER_MODE" = yes; then
3458   MAINTAINER_MODE_TRUE=
3459   MAINTAINER_MODE_FALSE='#'
3460 else
3461   MAINTAINER_MODE_TRUE='#'
3462   MAINTAINER_MODE_FALSE=
3463 fi
3464 MAINT=$MAINTAINER_MODE_TRUE
3465 AC_SUBST(MAINT)dnl
3466
3467 # ---------------------
3468 # GCC bootstrap support
3469 # ---------------------
3470
3471 # Stage specific cflags for build.
3472 stage1_cflags="-g"
3473 case $build in
3474   vax-*-*)
3475     case ${GCC} in
3476       yes) stage1_cflags="-g -Wa,-J" ;;
3477       *) stage1_cflags="-g -J" ;;
3478     esac ;;
3479 esac
3480
3481 AC_SUBST(stage1_cflags)
3482
3483 # Enable --enable-checking in stage1 of the compiler.
3484 AC_ARG_ENABLE(stage1-checking,
3485 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3486                 [choose additional checking for stage1 of the compiler])],
3487 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3488 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3489   # For --disable-checking or implicit --enable-checking=release, avoid
3490   # setting --enable-checking=gc in the default stage1 checking for LTO
3491   # bootstraps.  See PR62077.
3492   case $BUILD_CONFIG in
3493     *lto*)
3494       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3495     *)
3496       stage1_checking=--enable-checking=yes,types;;
3497   esac
3498   if test "x$enable_checking" = x && \
3499      test -d ${srcdir}/gcc && \
3500      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3501     stage1_checking=--enable-checking=yes,types,extra
3502   fi
3503 else
3504   stage1_checking=--enable-checking=$enable_checking,types
3505 fi])
3506 AC_SUBST(stage1_checking)
3507
3508 # Enable -Werror in bootstrap stage2 and later.
3509 AC_ARG_ENABLE(werror,
3510 [AS_HELP_STRING([--enable-werror],
3511                 [enable -Werror in bootstrap stage2 and later])], [], [])
3512 case ${enable_werror} in
3513   yes) stage2_werror_flag="--enable-werror-always" ;;
3514   *) stage2_werror_flag="" ;;
3515 esac
3516
3517 if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3518   case $BUILD_CONFIG in
3519   bootstrap-debug)
3520       stage2_werror_flag="--enable-werror-always" ;;
3521   "")
3522       stage2_werror_flag="--enable-werror-always" ;;
3523   esac
3524 fi
3525
3526 AC_SUBST(stage2_werror_flag)
3527
3528 # Specify what files to not compare during bootstrap.
3529
3530 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3531 case "$target" in
3532   hppa*64*-*-hpux*) ;;
3533   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/* | gcc/function-tests.o" ;;
3534   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3535 esac
3536 AC_SUBST(compare_exclusions)
3537
3538 AC_CONFIG_FILES([Makefile],
3539   [sed "$extrasub_build" Makefile |
3540    sed "$extrasub_host" |
3541    sed "$extrasub_target" > mf$$
3542    mv -f mf$$ Makefile],
3543   [extrasub_build="$extrasub_build"
3544    extrasub_host="$extrasub_host"
3545    extrasub_target="$extrasub_target"])
3546 AC_OUTPUT