configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
   3 #   2014, 2015 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32
  33 AC_INIT(move-if-change)
  34 AC_PREREQ(2.64)
  35 AC_DISABLE_OPTION_CHECKING
  36
  37 progname=$0
  38 # if PWD already has a value, it is probably wrong.
  39 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  40
  41 # Export original configure arguments for use by sub-configures.
  42 # Quote arguments with shell meta charatcers.
  43 TOPLEVEL_CONFIGURE_ARGUMENTS=
  44 set -- "$progname" "$@"
  45 for ac_arg
  46 do
  47   case "$ac_arg" in
  48   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  49     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  50     # if the argument is of the form -foo=baz, quote the baz part only
  51     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  52   *) ;;
  53   esac
  54   # Add the quoted argument to the list.
  55   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  56 done
  57 if test "$silent" = yes; then
  58   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  59 fi
  60 # Remove the initial space we just introduced and, as these will be
  61 # expanded by make, quote '$'.
  62 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  63 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  64
  65 # Find the build, host, and target systems.
  66 ACX_NONCANONICAL_BUILD
  67 ACX_NONCANONICAL_HOST
  68 ACX_NONCANONICAL_TARGET
  69
  70 dnl Autoconf 2.5x and later will set a default program prefix if
  71 dnl --target was used, even if it was the same as --host.  Disable
  72 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  73 dnl to take effect.
  74 test "$host_noncanonical" = "$target_noncanonical" &&
  75   test "$program_prefix$program_suffix$program_transform_name" = \
  76     NONENONEs,x,x, &&
  77   program_transform_name=s,y,y,
  78
  79 AC_CANONICAL_SYSTEM
  80 AC_ARG_PROGRAM
  81
  82 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  83 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  84
  85 # Get 'install' or 'install-sh' and its variants.
  86 AC_PROG_INSTALL
  87 ACX_PROG_LN
  88 AC_PROG_LN_S
  89 AC_PROG_SED
  90 AC_PROG_AWK
  91
  92 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  93
  94 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  95 # a relative path.
  96 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  97   INSTALL="${srcpwd}/install-sh -c"
  98 fi
  99
 100 # Set srcdir to "." if that's what it is.
 101 # This is important for multilib support.
 102 pwd=`${PWDCMD-pwd}`
 103 if test "${pwd}" = "${srcpwd}" ; then
 104   srcdir=.
 105 fi
 106
 107 topsrcdir=$srcpwd
 108
 109 extra_host_args=
 110
 111 ### To add a new directory to the tree, first choose whether it is a target
 112 ### or a host dependent tool.  Then put it into the appropriate list
 113 ### (library or tools, host or target), doing a dependency sort.
 114
 115 # Subdirs will be configured in the order listed in build_configdirs,
 116 # configdirs, or target_configdirs; see the serialization section below.
 117
 118 # Dependency sorting is only needed when *configuration* must be done in
 119 # a particular order.  In all cases a dependency should be specified in
 120 # the Makefile, whether or not it's implicitly specified here.
 121
 122 # Double entries in build_configdirs, configdirs, or target_configdirs may
 123 # cause circular dependencies and break everything horribly.
 124
 125 # these library is used by various programs built for the build
 126 # environment
 127 #
 128 build_libs="build-libiberty build-libcpp"
 129
 130 # these tools are built for the build environment
 131 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 132
 133 # these libraries are used by various programs built for the host environment
 134 #f
 135 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv"
 136
 137 # these tools are built for the host environment
 138 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 139 # know that we are building the simulator.
 140 # binutils, gas and ld appear in that order because it makes sense to run
 141 # "make check" in that particular order.
 142 # If --enable-gold is used, "gold" may replace "ld".
 143 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 144
 145 # libgcj represents the runtime libraries only used by gcj.
 146 libgcj="target-libffi \
 147         target-zlib \
 148         target-libjava"
 149
 150 # these libraries are built for the target environment, and are built after
 151 # the host libraries and the host tools (which may be a cross compiler)
 152 # Note that libiberty is not a target library.
 153 target_libraries="target-libgcc \
 154                 target-libbacktrace \
 155                 target-libgloss \
 156                 target-newlib \
 157                 target-libgomp \
 158                 target-libcilkrts \
 159                 target-liboffloadmic \
 160                 target-libatomic \
 161                 target-libitm \
 162                 target-libstdc++-v3 \
 163                 target-libsanitizer \
 164                 target-libvtv \
 165                 target-libmpx \
 166                 target-libssp \
 167                 target-libquadmath \
 168                 target-libgfortran \
 169                 target-boehm-gc \
 170                 ${libgcj} \
 171                 target-libobjc \
 172                 target-libada \
 173                 target-libgo"
 174
 175 # these tools are built using the target libraries, and are intended to
 176 # run only in the target environment
 177 #
 178 # note: any program that *uses* libraries that are in the "target_libraries"
 179 # list belongs in this list.
 180 #
 181 target_tools="target-rda"
 182
 183 ################################################################################
 184
 185 ## All tools belong in one of the four categories, and are assigned above
 186 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 187 ## is important because configure will choke if they ever get through.
 188 ## ${configdirs} is directories we build using the host tools.
 189 ## ${target_configdirs} is directories we build using the target tools.
 190 configdirs=`echo ${host_libs} ${host_tools}`
 191 target_configdirs=`echo ${target_libraries} ${target_tools}`
 192 build_configdirs=`echo ${build_libs} ${build_tools}`
 193
 194 m4_divert_text([PARSE_ARGS],
 195 [case $srcdir in
 196   *" "*)
 197 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 198     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 199 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 200     ;;
 201 esac
 202 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 203 ])
 204
 205 ################################################################################
 206
 207 srcname="gnu development package"
 208
 209 # This gets set non-empty for some net releases of packages.
 210 appdirs=""
 211
 212 # Define is_cross_compiler to save on calls to 'test'.
 213 is_cross_compiler=
 214 if test x"${host}" = x"${target}" ; then
 215   is_cross_compiler=no
 216 else
 217   is_cross_compiler=yes
 218 fi
 219
 220 # Find the build and target subdir names.
 221 GCC_TOPLEV_SUBDIRS
 222 # Be sure to cover against remnants of an in-tree build.
 223 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 224   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 225 Use a pristine source tree when building in a separate tree])
 226 fi
 227
 228 # Skipdirs are removed silently.
 229 skipdirs=
 230 # Noconfigdirs are removed loudly.
 231 noconfigdirs=""
 232
 233 use_gnu_ld=
 234 # Make sure we don't let GNU ld be added if we didn't want it.
 235 if test x$with_gnu_ld = xno ; then
 236   use_gnu_ld=no
 237   noconfigdirs="$noconfigdirs ld gold"
 238 fi
 239
 240 use_gnu_as=
 241 # Make sure we don't let GNU as be added if we didn't want it.
 242 if test x$with_gnu_as = xno ; then
 243   use_gnu_as=no
 244   noconfigdirs="$noconfigdirs gas"
 245 fi
 246
 247 use_included_zlib=
 248 AC_ARG_WITH(system-zlib,
 249 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 250 # Make sure we don't let ZLIB be added if we didn't want it.
 251 if test x$with_system_zlib = xyes ; then
 252   use_included_zlib=no
 253   noconfigdirs="$noconfigdirs zlib"
 254 fi
 255
 256 # some tools are so dependent upon X11 that if we're not building with X,
 257 # it's not even worth trying to configure, much less build, that tool.
 258
 259 case ${with_x} in
 260   yes | "") ;; # the default value for this tree is that X11 is available
 261   no)
 262     skipdirs="${skipdirs} tk itcl libgui"
 263     # We won't be able to build gdbtk without X.
 264     enable_gdbtk=no
 265     ;;
 266   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 267 esac
 268
 269 # Some are only suitable for cross toolchains.
 270 # Remove these if host=target.
 271 cross_only="target-libgloss target-newlib target-opcodes"
 272
 273 case $is_cross_compiler in
 274   no) skipdirs="${skipdirs} ${cross_only}" ;;
 275 esac
 276
 277 # If both --with-headers and --with-libs are specified, default to
 278 # --without-newlib.
 279 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 280    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 281   if test x"${with_newlib}" = x ; then
 282     with_newlib=no
 283   fi
 284 fi
 285
 286 # Recognize --with-newlib/--without-newlib.
 287 case ${with_newlib} in
 288   no) skipdirs="${skipdirs} target-newlib" ;;
 289   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 290 esac
 291
 292 AC_ARG_ENABLE(as-accelerator-for,
 293 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 294                 [build as offload target compiler.
 295                 Specify offload host triple by ARG])])
 296
 297 AC_ARG_ENABLE(offload-targets,
 298 [AS_HELP_STRING([--enable-offload-targets=LIST],
 299                 [enable offloading to devices from comma-separated LIST of
 300                 TARGET[=DIR]. Use optional path to find offload target compiler
 301                 during the build])],
 302 [
 303   if test x"$enable_offload_targets" = x; then
 304     AC_MSG_ERROR([no offload targets specified])
 305   fi
 306 ], [enable_offload_targets=])
 307
 308 # Handle --enable-gold, --enable-ld.
 309 # --disable-gold [--enable-ld]
 310 #     Build only ld.  Default option.
 311 # --enable-gold [--enable-ld]
 312 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 313 #     as "ld.bfd" and "ld".
 314 # --enable-gold=default [--enable-ld]
 315 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 316 #     install ld as "ld.bfd".
 317 # --enable-gold[=default] --disable-ld
 318 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 319 # --enable-gold --enable-ld=default
 320 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 321 #     and ld.bfd).
 322 #     In other words, ld is default
 323 # --enable-gold=default --enable-ld=default
 324 #     Error.
 325
 326 default_ld=
 327 AC_ARG_ENABLE(gold,
 328 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 329                 [build gold @<:@ARG={default,yes,no}@:>@])],
 330 ENABLE_GOLD=$enableval,
 331 ENABLE_GOLD=no)
 332 case "${ENABLE_GOLD}" in
 333   yes|default)
 334     # Check for ELF target.
 335     is_elf=no
 336     case "${target}" in
 337       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 338       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 339       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 340       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 341         case "${target}" in
 342           *-*-linux*aout* | *-*-linux*oldld*)
 343             ;;
 344           *)
 345             is_elf=yes
 346             ;;
 347         esac
 348     esac
 349
 350     if test "$is_elf" = "yes"; then
 351       # Check for target supported by gold.
 352       case "${target}" in
 353         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 354         | aarch64*-*-* | tilegx*-*-*)
 355           configdirs="$configdirs gold"
 356           if test x${ENABLE_GOLD} = xdefault; then
 357             default_ld=gold
 358           fi
 359           ENABLE_GOLD=yes
 360           ;;
 361       esac
 362     fi
 363     ;;
 364   no)
 365     ;;
 366   *)
 367     AC_MSG_ERROR([invalid --enable-gold argument])
 368     ;;
 369 esac
 370
 371 AC_ARG_ENABLE(ld,
 372 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 373                 [build ld @<:@ARG={default,yes,no}@:>@])],
 374 ENABLE_LD=$enableval,
 375 ENABLE_LD=yes)
 376
 377 case "${ENABLE_LD}" in
 378   default)
 379     if test x${default_ld} != x; then
 380       AC_MSG_ERROR([either gold or ld can be the default ld])
 381     fi
 382     ;;
 383   yes)
 384     ;;
 385   no)
 386     if test x${ENABLE_GOLD} != xyes; then
 387       AC_MSG_WARN([neither ld nor gold are enabled])
 388     fi
 389     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 390     ;;
 391   *)
 392     AC_MSG_ERROR([invalid --enable-ld argument])
 393     ;;
 394 esac
 395
 396 # Configure extra directories which are host specific
 397
 398 case "${host}" in
 399   *-cygwin*)
 400     configdirs="$configdirs libtermcap" ;;
 401 esac
 402
 403 # A target can indicate whether a language isn't supported for some reason.
 404 # Only spaces may be used in this macro; not newlines or tabs.
 405 unsupported_languages=
 406
 407 # Remove more programs from consideration, based on the host or
 408 # target this usually means that a port of the program doesn't
 409 # exist yet.
 410
 411 case "${host}" in
 412   i[[3456789]]86-*-msdosdjgpp*)
 413     noconfigdirs="$noconfigdirs tcl tk itcl"
 414     ;;
 415 esac
 416
 417
 418 AC_ARG_ENABLE(libquadmath,
 419 AS_HELP_STRING([--disable-libquadmath],
 420   [do not build libquadmath directory]),
 421 ENABLE_LIBQUADMATH=$enableval,
 422 ENABLE_LIBQUADMATH=yes)
 423 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 424   noconfigdirs="$noconfigdirs target-libquadmath"
 425 fi
 426
 427
 428 AC_ARG_ENABLE(libquadmath-support,
 429 AS_HELP_STRING([--disable-libquadmath-support],
 430   [disable libquadmath support for Fortran]),
 431 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 432 ENABLE_LIBQUADMATH_SUPPORT=yes)
 433 enable_libquadmath_support=
 434 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 435   enable_libquadmath_support=no
 436 fi
 437
 438
 439 AC_ARG_ENABLE(libada,
 440 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 441 ENABLE_LIBADA=$enableval,
 442 ENABLE_LIBADA=yes)
 443 if test "${ENABLE_LIBADA}" != "yes" ; then
 444   noconfigdirs="$noconfigdirs gnattools"
 445 fi
 446
 447 AC_ARG_ENABLE(libssp,
 448 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 449 ENABLE_LIBSSP=$enableval,
 450 ENABLE_LIBSSP=yes)
 451
 452 AC_ARG_ENABLE(libstdcxx,
 453 AS_HELP_STRING([--disable-libstdcxx],
 454   [do not build libstdc++-v3 directory]),
 455 ENABLE_LIBSTDCXX=$enableval,
 456 ENABLE_LIBSTDCXX=default)
 457 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 458   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 459 fi]
 460
 461 # If this is accelerator compiler and its target is intelmic we enable
 462 # target liboffloadmic by default.  If this is compiler with offloading
 463 # for intelmic we enable host liboffloadmic by default.  Otherwise
 464 # liboffloadmic is disabled by default.
 465 AC_ARG_ENABLE([liboffloadmic],
 466 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 467                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 468 [case "$enableval" in
 469   no | host | target)
 470     enable_liboffloadmic=$enableval ;;
 471   *)
 472     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 473 esac],
 474 [if test x"$enable_as_accelerator_for" != x; then
 475   case "${target}" in
 476     *-intelmic-* | *-intelmicemul-*)
 477       enable_liboffloadmic=target
 478       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 479       ;;
 480     *)
 481       enable_liboffloadmic=no
 482       ;;
 483   esac
 484 else
 485   case "${enable_offload_targets}" in
 486     *-intelmic-* | *-intelmicemul-*)
 487       enable_liboffloadmic=host
 488       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 489       ;;
 490     *)
 491       enable_liboffloadmic=no
 492       ;;
 493     esac
 494 fi])
 495 AC_SUBST(extra_liboffloadmic_configure_flags)
 496
 497 # Save it here so that, even in case of --enable-libgcj, if the Java
 498 # front-end isn't enabled, we still get libgcj disabled.
 499 libgcj_saved=$libgcj
 500 case $enable_libgcj in
 501 yes)
 502   # If we reset it here, it won't get added to noconfigdirs in the
 503   # target-specific build rules, so it will be forcibly enabled
 504   # (unless the Java language itself isn't enabled).
 505   libgcj=
 506   ;;
 507 no)
 508   # Make sure we get it printed in the list of not supported target libs.
 509   # Don't disable libffi, though, other languages use it.
 510   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 511   # Clear libgcj_saved so that even if java is enabled libffi won't be
 512   # built.
 513   libgcj_saved=
 514   ;;
 515 esac
 516
 517 AC_ARG_ENABLE(static-libjava,
 518 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 519                 [build static libjava @<:@default=no@:>@])],
 520 ENABLE_STATIC_LIBJAVA=$enableval,
 521 ENABLE_STATIC_LIBJAVA=no)
 522 enable_static_libjava=
 523 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 524   enable_static_libjava=yes
 525 fi
 526
 527 if test x$enable_static_libjava != xyes ; then
 528   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 529 fi
 530 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 531
 532 # Disable libgomp on non POSIX hosted systems.
 533 if test x$enable_libgomp = x ; then
 534     # Enable libgomp by default on hosted POSIX systems.
 535     case "${target}" in
 536     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 537         ;;
 538     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 539         ;;
 540     *-*-solaris2* | *-*-hpux11*)
 541         ;;
 542     *-*-darwin* | *-*-aix*)
 543         ;;
 544     *)
 545         noconfigdirs="$noconfigdirs target-libgomp"
 546         ;;
 547     esac
 548 fi
 549
 550 # Disable libatomic on unsupported systems.
 551 if test -d ${srcdir}/libatomic; then
 552     if test x$enable_libatomic = x; then
 553         AC_MSG_CHECKING([for libatomic support])
 554         if (srcdir=${srcdir}/libatomic; \
 555                 . ${srcdir}/configure.tgt; \
 556                 test -n "$UNSUPPORTED")
 557         then
 558             AC_MSG_RESULT([no])
 559             noconfigdirs="$noconfigdirs target-libatomic"
 560         else
 561             AC_MSG_RESULT([yes])
 562         fi
 563     fi
 564 fi
 565
 566 # Disable libcilkrts on unsupported systems.
 567 if test -d ${srcdir}/libcilkrts; then
 568     if test x$enable_libcilkrts = x; then
 569         AC_MSG_CHECKING([for libcilkrts support])
 570         if (srcdir=${srcdir}/libcilkrts; \
 571                 . ${srcdir}/configure.tgt; \
 572                 test -n "$UNSUPPORTED")
 573         then
 574             AC_MSG_RESULT([no])
 575             noconfigdirs="$noconfigdirs target-libcilkrts"
 576         else
 577             AC_MSG_RESULT([yes])
 578         fi
 579     fi
 580 fi
 581
 582 # Disable liboffloadmic on unsupported systems.
 583 if test -d ${srcdir}/liboffloadmic; then
 584     if test x$enable_liboffloadmic != xno; then
 585         AC_MSG_CHECKING([for liboffloadmic support])
 586         if (srcdir=${srcdir}/liboffloadmic; \
 587                 . ${srcdir}/configure.tgt; \
 588                 test -n "$UNSUPPORTED")
 589         then
 590             AC_MSG_RESULT([no])
 591             noconfigdirs="$noconfigdirs target-liboffloadmic"
 592         else
 593             AC_MSG_RESULT([yes])
 594         fi
 595     fi
 596 fi
 597
 598 # Disable libitm on unsupported systems.
 599 if test -d ${srcdir}/libitm; then
 600     if test x$enable_libitm = x; then
 601         AC_MSG_CHECKING([for libitm support])
 602         if (srcdir=${srcdir}/libitm; \
 603                 . ${srcdir}/configure.tgt; \
 604                 test -n "$UNSUPPORTED")
 605         then
 606             AC_MSG_RESULT([no])
 607             noconfigdirs="$noconfigdirs target-libitm"
 608         else
 609             AC_MSG_RESULT([yes])
 610         fi
 611     fi
 612 fi
 613
 614 # Disable libsanitizer on unsupported systems.
 615 if test -d ${srcdir}/libsanitizer; then
 616     if test x$enable_libsanitizer = x; then
 617         AC_MSG_CHECKING([for libsanitizer support])
 618         if (srcdir=${srcdir}/libsanitizer; \
 619                 . ${srcdir}/configure.tgt; \
 620                 test -n "$UNSUPPORTED")
 621         then
 622             AC_MSG_RESULT([no])
 623             noconfigdirs="$noconfigdirs target-libsanitizer"
 624         else
 625             AC_MSG_RESULT([yes])
 626         fi
 627     fi
 628 fi
 629
 630 # Disable libvtv on unsupported systems.
 631 if test -d ${srcdir}/libvtv; then
 632     if test x$enable_libvtv = x; then
 633         AC_MSG_CHECKING([for libvtv support])
 634         if (srcdir=${srcdir}/libvtv; \
 635                 . ${srcdir}/configure.tgt; \
 636                 test "$VTV_SUPPORTED" != "yes")
 637         then
 638             AC_MSG_RESULT([no])
 639             noconfigdirs="$noconfigdirs target-libvtv"
 640         else
 641             AC_MSG_RESULT([yes])
 642         fi
 643     fi
 644 fi
 645
 646
 647 # Enable libmpx on supported systems by request.
 648 if test -d ${srcdir}/libmpx; then
 649     if test x$enable_libmpx = xyes; then
 650        AC_MSG_CHECKING([for libmpx support])
 651        if (srcdir=${srcdir}/libmpx; \
 652                . ${srcdir}/configure.tgt; \
 653                test "$LIBMPX_SUPPORTED" != "yes")
 654        then
 655            AC_MSG_RESULT([no])
 656            noconfigdirs="$noconfigdirs target-libmpx"
 657        else
 658            AC_MSG_RESULT([yes])
 659        fi
 660     else
 661        noconfigdirs="$noconfigdirs target-libmpx"
 662     fi
 663 fi
 664
 665
 666
 667 # Disable libquadmath for some systems.
 668 case "${target}" in
 669   avr-*-*)
 670     noconfigdirs="$noconfigdirs target-libquadmath"
 671     ;;
 672   # libquadmath is unused on AIX and libquadmath build process use of
 673   # LD_LIBRARY_PATH can break AIX bootstrap.
 674   powerpc-*-aix* | rs6000-*-aix*)
 675     noconfigdirs="$noconfigdirs target-libquadmath"
 676     ;;
 677 esac
 678
 679 # Disable libssp for some systems.
 680 case "${target}" in
 681   avr-*-*)
 682     # No hosted I/O support.
 683     noconfigdirs="$noconfigdirs target-libssp"
 684     ;;
 685   powerpc-*-aix* | rs6000-*-aix*)
 686     noconfigdirs="$noconfigdirs target-libssp"
 687     ;;
 688   rl78-*-*)
 689     # libssp uses a misaligned load to trigger a fault, but the RL78
 690     # doesn't fault for those - instead, it gives a build-time error
 691     # for explicit misaligned loads.
 692     noconfigdirs="$noconfigdirs target-libssp"
 693     ;;
 694   visium-*-*)
 695     # No hosted I/O support.
 696     noconfigdirs="$noconfigdirs target-libssp"
 697     ;;
 698 esac
 699
 700 # Disable libstdc++-v3 for some systems.
 701 # Allow user to override this if they pass --enable-libstdc++-v3
 702 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 703   case "${target}" in
 704     *-*-vxworks*)
 705       # VxWorks uses the Dinkumware C++ library.
 706       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 707       ;;
 708     arm*-wince-pe*)
 709       # the C++ libraries don't build on top of CE's C libraries
 710       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 711       ;;
 712     avr-*-*)
 713       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 714       ;;
 715     ft32-*-*)
 716       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 717       ;;
 718   esac
 719 fi
 720
 721 # Disable Fortran for some systems.
 722 case "${target}" in
 723   mmix-*-*)
 724     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 725     unsupported_languages="$unsupported_languages fortran"
 726     ;;
 727 esac
 728
 729 # Disable Java if libffi is not supported.
 730 case "${target}" in
 731   aarch64-*-*)
 732     ;;
 733   alpha*-*-*)
 734     ;;
 735   arm*-*-*)
 736     ;;
 737   cris-*-*)
 738     ;;
 739   frv-*-*)
 740     ;;
 741   hppa*-*-linux*)
 742     ;;
 743   hppa*-*-hpux*)
 744     ;;
 745   i?86-*-*)
 746     ;;
 747   ia64*-*-*)
 748     ;;
 749   m32r*-*-*)
 750     ;;
 751   m68k-*-*)
 752     ;;
 753   mips*-*-rtems*)
 754     ;;
 755   mips*-*-linux*)
 756     ;;
 757   powerpc*-*-linux*)
 758     ;;
 759   powerpc-*-darwin*)
 760     ;;
 761   powerpc-*-aix* | rs6000-*-aix*)
 762     ;;
 763   powerpc-*-freebsd*)
 764     ;;
 765   powerpc64-*-freebsd*)
 766     ;;
 767   powerpc*-*-rtems*)
 768     ;;
 769   s390-*-* | s390x-*-*)
 770     ;;
 771   sh-*-* | sh[[34]]*-*-*)
 772     ;;
 773   sh64-*-* | sh5*-*-*)
 774     ;;
 775   sparc*-*-*)
 776     ;;
 777   x86_64-*-*)
 778     ;;
 779   *-*-*)
 780     unsupported_languages="$unsupported_languages java"
 781     ;;
 782 esac
 783
 784 # Disable Java, libgcj or related libraries for some systems.
 785 case "${target}" in
 786   powerpc-*-darwin*)
 787     ;;
 788   i[[3456789]]86-*-darwin*)
 789     ;;
 790   x86_64-*-darwin[[912]]*)
 791     ;;
 792   *-*-darwin*)
 793     noconfigdirs="$noconfigdirs ${libgcj}"
 794     ;;
 795   *-*-netware*)
 796     noconfigdirs="$noconfigdirs ${libgcj}"
 797     ;;
 798   *-*-rtems*)
 799     noconfigdirs="$noconfigdirs ${libgcj}"
 800     ;;
 801   *-*-tpf*)
 802     noconfigdirs="$noconfigdirs ${libgcj}"
 803     ;;
 804   *-*-uclinux*)
 805     noconfigdirs="$noconfigdirs ${libgcj}"
 806     ;;
 807   *-*-vxworks*)
 808     noconfigdirs="$noconfigdirs ${libgcj}"
 809     ;;
 810   alpha*-*-*vms*)
 811     noconfigdirs="$noconfigdirs ${libgcj}"
 812     ;;
 813   arm*-*-freebsd*)
 814     noconfigdirs="$noconfigdirs ${libgcj}"
 815     ;;
 816   arm-wince-pe)
 817     noconfigdirs="$noconfigdirs ${libgcj}"
 818     ;;
 819   arm*-*-symbianelf*)
 820     noconfigdirs="$noconfigdirs ${libgcj}"
 821     ;;
 822   bfin-*-*)
 823     noconfigdirs="$noconfigdirs target-boehm-gc"
 824     ;;
 825   cris-*-* | crisv32-*-*)
 826     unsupported_languages="$unsupported_languages java"
 827     case "${target}" in
 828       *-*-linux*)
 829         ;;
 830       *) # See PR46792 regarding target-libffi.
 831         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 832     esac
 833     ;;
 834   hppa*64*-*-linux*)
 835     # In this case, it's because the hppa64-linux target is for
 836     # the kernel only at this point and has no libc, and thus no
 837     # headers, crt*.o, etc., all of which are needed by these.
 838     unsupported_languages="$unsupported_languages java"
 839     ;;
 840   hppa*64*-*-hpux*)
 841     noconfigdirs="$noconfigdirs ${libgcj}"
 842     ;;
 843   hppa*-hp-hpux11*)
 844     ;;
 845   hppa*-*-hpux*)
 846     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 847     # build on HP-UX 10.20.
 848     noconfigdirs="$noconfigdirs ${libgcj}"
 849     ;;
 850   ia64*-*-*vms*)
 851     noconfigdirs="$noconfigdirs ${libgcj}"
 852     ;;
 853   i[[3456789]]86-w64-mingw*)
 854     noconfigdirs="$noconfigdirs ${libgcj}"
 855     ;;
 856   i[[3456789]]86-*-mingw*)
 857     noconfigdirs="$noconfigdirs ${libgcj}"
 858     ;;
 859   x86_64-*-mingw*)
 860     noconfigdirs="$noconfigdirs ${libgcj}"
 861     ;;
 862   mmix-*-*)
 863     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 864     ;;
 865   powerpc-*-aix*)
 866     # copied from rs6000-*-* entry
 867     noconfigdirs="$noconfigdirs ${libgcj}"
 868     ;;
 869   rs6000-*-aix*)
 870     noconfigdirs="$noconfigdirs ${libgcj}"
 871     ;;
 872   ft32-*-*)
 873     noconfigdirs="$noconfigdirs ${libgcj}"
 874     ;;
 875   *-*-lynxos*)
 876     noconfigdirs="$noconfigdirs ${libgcj}"
 877     ;;
 878 esac
 879
 880 # Disable the go frontend on systems where it is known to not work. Please keep
 881 # this in sync with contrib/config-list.mk.
 882 case "${target}" in
 883 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 884     unsupported_languages="$unsupported_languages go"
 885     ;;
 886 esac
 887
 888 # Disable libgo for some systems where it is known to not work.
 889 # For testing, you can easily override this with --enable-libgo.
 890 if test x$enable_libgo = x; then
 891     case "${target}" in
 892     *-*-darwin*)
 893         # PR 46986
 894         noconfigdirs="$noconfigdirs target-libgo"
 895         ;;
 896     *-*-cygwin* | *-*-mingw*)
 897         noconfigdirs="$noconfigdirs target-libgo"
 898         ;;
 899     *-*-aix*)
 900         noconfigdirs="$noconfigdirs target-libgo"
 901         ;;
 902     esac
 903 fi
 904
 905 # Default libgloss CPU subdirectory.
 906 libgloss_dir="$target_cpu"
 907
 908 case "${target}" in
 909   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 910     libgloss_dir=wince
 911     ;;
 912   aarch64*-*-* )
 913     libgloss_dir=aarch64
 914     ;;
 915   arm*-*-*)
 916     libgloss_dir=arm
 917     ;;
 918   cris-*-* | crisv32-*-*)
 919     libgloss_dir=cris
 920     ;;
 921   hppa*-*-*)
 922     libgloss_dir=pa
 923     ;;
 924   i[[3456789]]86-*-*)
 925     libgloss_dir=i386
 926     ;;
 927   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 928     libgloss_dir=m68hc11
 929     ;;
 930   m68*-*-* | fido-*-*)
 931     libgloss_dir=m68k
 932     ;;
 933   mips*-*-*)
 934     libgloss_dir=mips
 935     ;;
 936   powerpc*-*-*)
 937     libgloss_dir=rs6000
 938     ;;
 939   sparc*-*-*)
 940     libgloss_dir=sparc
 941     ;;
 942 esac
 943
 944 # Disable newlib and libgloss for various target OSes.
 945 case "${target}" in
 946   alpha*-dec-osf*)
 947     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 948     ;;
 949   i[[3456789]]86-*-linux*)
 950     # This section makes it possible to build newlib natively on linux.
 951     # If we are using a cross compiler then don't configure newlib.
 952     if test x${is_cross_compiler} != xno ; then
 953       noconfigdirs="$noconfigdirs target-newlib"
 954     fi
 955     noconfigdirs="$noconfigdirs target-libgloss"
 956     # If we are not using a cross compiler, do configure newlib.
 957     # Note however, that newlib will only be configured in this situation
 958     # if the --with-newlib option has been given, because otherwise
 959     # 'target-newlib' will appear in skipdirs.
 960     ;;
 961   i[[3456789]]86-*-rdos*)
 962     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 963     ;;
 964   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 965     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 966     ;;
 967   sparc-*-sunos4*)
 968     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 969     ;;
 970   *-*-aix*)
 971     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 972     ;;
 973   *-*-beos*)
 974     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 975     ;;
 976   *-*-chorusos)
 977     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 978     ;;
 979   *-*-dragonfly*)
 980     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 981     ;;
 982   *-*-freebsd*)
 983     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 984     ;;
 985   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 986     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 987     ;;
 988   *-*-lynxos*)
 989     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 990     ;;
 991   *-*-mingw*)
 992     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 993     ;;
 994   *-*-netbsd*)
 995     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 996     ;;
 997   *-*-netware*)
 998     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 999     ;;
1000   *-*-tpf*)
1001     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1002     ;;
1003   *-*-uclinux*)
1004     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1005     ;;
1006   *-*-vxworks*)
1007     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1008     ;;
1009 esac
1010
1011 case "${target}" in
1012   *-*-chorusos)
1013     ;;
1014   powerpc-*-darwin*)
1015     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1016     noconfigdirs="$noconfigdirs sim target-rda"
1017     ;;
1018   i[[3456789]]86-*-darwin*)
1019     noconfigdirs="$noconfigdirs ld gprof"
1020     noconfigdirs="$noconfigdirs sim target-rda"
1021     ;;
1022   x86_64-*-darwin[[912]]*)
1023     noconfigdirs="$noconfigdirs ld gas gprof"
1024     noconfigdirs="$noconfigdirs sim target-rda"
1025     ;;
1026   *-*-darwin*)
1027     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1028     noconfigdirs="$noconfigdirs sim target-rda"
1029     ;;
1030   *-*-dragonfly*)
1031     ;;
1032   *-*-freebsd*)
1033     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
1034         && test -f /usr/local/include/gmp.h; then
1035       with_gmp=/usr/local
1036     fi
1037     ;;
1038   *-*-kaos*)
1039     # Remove unsupported stuff on all kaOS configurations.
1040     noconfigdirs="$noconfigdirs target-libgloss"
1041     ;;
1042   *-*-netbsd*)
1043     ;;
1044   *-*-netware*)
1045     ;;
1046   *-*-rtems*)
1047     noconfigdirs="$noconfigdirs target-libgloss"
1048     # this is not caught below because this stanza matches earlier
1049     case $target in
1050       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
1051     esac
1052     ;;
1053     # The tpf target doesn't support gdb yet.
1054   *-*-tpf*)
1055     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1056     ;;
1057   *-*-uclinux*)
1058     noconfigdirs="$noconfigdirs target-rda"
1059     ;;
1060   *-*-vxworks*)
1061     ;;
1062   alpha*-dec-osf*)
1063     # ld works, but does not support shared libraries.
1064     # gas doesn't generate exception information.
1065     noconfigdirs="$noconfigdirs gas ld"
1066     ;;
1067   alpha*-*-*vms*)
1068     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1069     ;;
1070   alpha*-*-*)
1071     # newlib is not 64 bit ready
1072     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1073     ;;
1074   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1075     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1076     ;;
1077   arc-*-*|arceb-*-*)
1078     noconfigdirs="$noconfigdirs target-libgloss"
1079     ;;
1080   arm-*-pe*)
1081     noconfigdirs="$noconfigdirs target-libgloss"
1082     ;;
1083   arm-*-riscix*)
1084     noconfigdirs="$noconfigdirs ld target-libgloss"
1085     ;;
1086   avr-*-rtems*)
1087     ;;
1088   avr-*-*)
1089     if test x${with_avrlibc} != xno; then
1090       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1091     fi
1092     ;;
1093   c4x-*-* | tic4x-*-*)
1094     noconfigdirs="$noconfigdirs target-libgloss"
1095     ;;
1096   tic54x-*-*)
1097     noconfigdirs="$noconfigdirs target-libgloss gdb"
1098     ;;
1099   d10v-*-*)
1100     noconfigdirs="$noconfigdirs target-libgloss"
1101     ;;
1102   d30v-*-*)
1103     noconfigdirs="$noconfigdirs gdb"
1104     ;;
1105   fr30-*-elf*)
1106     noconfigdirs="$noconfigdirs gdb"
1107     ;;
1108   ft32-*-*)
1109     noconfigdirs="$noconfigdirs target-rda gprof"
1110     ;;
1111   moxie-*-*)
1112     noconfigdirs="$noconfigdirs"
1113     ;;
1114   h8300*-*-*)
1115     noconfigdirs="$noconfigdirs target-libgloss"
1116     ;;
1117   h8500-*-*)
1118     noconfigdirs="$noconfigdirs target-libgloss"
1119     ;;
1120   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1121     ;;
1122   hppa*64*-*-hpux*)
1123     noconfigdirs="$noconfigdirs gdb"
1124     ;;
1125   hppa*-*-hpux11*)
1126     noconfigdirs="$noconfigdirs gdb ld"
1127     ;;
1128   hppa*64*-*-linux*)
1129     ;;
1130   hppa*-*-linux*)
1131     ;;
1132   hppa*-*-*elf* | \
1133   hppa*-*-lites* | \
1134   hppa*-*-openbsd* | \
1135   hppa*64*-*-*)
1136     ;;
1137   hppa*-*-pro*)
1138     ;;
1139   hppa*-*-*)
1140     noconfigdirs="$noconfigdirs ld"
1141     ;;
1142   i960-*-*)
1143     noconfigdirs="$noconfigdirs gdb"
1144     ;;
1145   ia64*-*-elf*)
1146     # No gdb support yet.
1147     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1148     ;;
1149   ia64*-**-hpux*)
1150     # No ld support yet.
1151     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1152     ;;
1153   ia64*-*-*vms*)
1154     # No ld support yet.
1155     noconfigdirs="$noconfigdirs libgui itcl ld"
1156     ;;
1157   i[[3456789]]86-w64-mingw*)
1158     ;;
1159   i[[3456789]]86-*-mingw*)
1160     target_configdirs="$target_configdirs target-winsup"
1161     ;;
1162   *-*-cygwin*)
1163     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1164     noconfigdirs="$noconfigdirs target-libgloss"
1165     # always build newlib if winsup directory is present.
1166     if test -d "$srcdir/winsup/cygwin"; then
1167       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1168     elif test -d "$srcdir/newlib"; then
1169       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1170     fi
1171     ;;
1172   i[[3456789]]86-*-pe)
1173     noconfigdirs="$noconfigdirs target-libgloss"
1174     ;;
1175   i[[3456789]]86-*-sco3.2v5*)
1176     # The linker does not yet know about weak symbols in COFF,
1177     # and is not configured to handle mixed ELF and COFF.
1178     noconfigdirs="$noconfigdirs ld target-libgloss"
1179     ;;
1180   i[[3456789]]86-*-sco*)
1181     noconfigdirs="$noconfigdirs gprof target-libgloss"
1182     ;;
1183   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1184     noconfigdirs="$noconfigdirs target-libgloss"
1185     ;;
1186   i[[3456789]]86-*-sysv4*)
1187     noconfigdirs="$noconfigdirs target-libgloss"
1188     ;;
1189   i[[3456789]]86-*-beos*)
1190     noconfigdirs="$noconfigdirs gdb"
1191     ;;
1192   i[[3456789]]86-*-rdos*)
1193     noconfigdirs="$noconfigdirs gdb"
1194     ;;
1195   mmix-*-*)
1196     noconfigdirs="$noconfigdirs gdb"
1197     ;;
1198   mt-*-*)
1199     noconfigdirs="$noconfigdirs sim"
1200     ;;
1201   powerpc-*-aix*)
1202     # copied from rs6000-*-* entry
1203     noconfigdirs="$noconfigdirs gprof"
1204     ;;
1205   powerpc*-*-winnt* | powerpc*-*-pe*)
1206     target_configdirs="$target_configdirs target-winsup"
1207     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1208     # always build newlib.
1209     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1210     ;;
1211     # This is temporary until we can link against shared libraries
1212   powerpcle-*-solaris*)
1213     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1214     ;;
1215   powerpc-*-beos*)
1216     noconfigdirs="$noconfigdirs gdb"
1217     ;;
1218   rs6000-*-lynxos*)
1219     noconfigdirs="$noconfigdirs gprof"
1220     ;;
1221   rs6000-*-aix*)
1222     noconfigdirs="$noconfigdirs gprof"
1223     ;;
1224   rs6000-*-*)
1225     noconfigdirs="$noconfigdirs gprof"
1226     ;;
1227   m68k-apollo-*)
1228     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1229     ;;
1230   microblaze*)
1231     noconfigdirs="$noconfigdirs gprof"
1232     ;;
1233   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1234     if test x$with_newlib = xyes; then
1235       noconfigdirs="$noconfigdirs gprof"
1236     fi
1237     ;;
1238   mips*-*-irix5*)
1239     noconfigdirs="$noconfigdirs gprof target-libgloss"
1240     ;;
1241   mips*-*-irix6*)
1242     noconfigdirs="$noconfigdirs gprof target-libgloss"
1243     ;;
1244   mips*-*-bsd*)
1245     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1246     ;;
1247   mips*-*-linux*)
1248     ;;
1249   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1250   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1251     noconfigdirs="$noconfigdirs ld gas gprof"
1252     ;;
1253   mips*-*-*)
1254     noconfigdirs="$noconfigdirs gprof"
1255     ;;
1256   nds32*-*-*)
1257     noconfigdirs="$noconfigdirs gdb"
1258     ;;
1259   nvptx*-*-*)
1260     # nvptx is just a compiler
1261     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1262     ;;
1263   or1k*-*-*)
1264     noconfigdirs="$noconfigdirs gdb"
1265     ;;
1266   sh-*-* | sh64-*-*)
1267     case "${target}" in
1268       sh*-*-elf)
1269          ;;
1270       *)
1271          noconfigdirs="$noconfigdirs target-libgloss" ;;
1272     esac
1273     ;;
1274   sparc-*-sunos4*)
1275     if test x${is_cross_compiler} = xno ; then
1276            use_gnu_ld=no
1277     fi
1278     ;;
1279   tic6x-*-*)
1280     noconfigdirs="$noconfigdirs sim"
1281     ;;
1282   tilepro*-*-* | tilegx*-*-*)
1283     noconfigdirs="$noconfigdirs sim"
1284     ;;
1285   v810-*-*)
1286     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1287     ;;
1288   vax-*-*)
1289     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1290     ;;
1291 esac
1292
1293 # If we aren't building newlib, then don't build libgloss, since libgloss
1294 # depends upon some newlib header files.
1295 case "${noconfigdirs}" in
1296   *target-libgloss*) ;;
1297   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1298 esac
1299
1300 # Work in distributions that contain no compiler tools, like Autoconf.
1301 host_makefile_frag=/dev/null
1302 if test -d ${srcdir}/config ; then
1303 case "${host}" in
1304   i[[3456789]]86-*-msdosdjgpp*)
1305     host_makefile_frag="config/mh-djgpp"
1306     ;;
1307   *-cygwin*)
1308     ACX_CHECK_CYGWIN_CAT_WORKS
1309     host_makefile_frag="config/mh-cygwin"
1310     ;;
1311   *-mingw*)
1312     host_makefile_frag="config/mh-mingw"
1313     ;;
1314   alpha*-linux*)
1315     host_makefile_frag="config/mh-alpha-linux"
1316     ;;
1317   hppa*-hp-hpux10*)
1318     host_makefile_frag="config/mh-pa-hpux10"
1319     ;;
1320   hppa*-hp-hpux*)
1321     host_makefile_frag="config/mh-pa"
1322     ;;
1323   hppa*-*)
1324     host_makefile_frag="config/mh-pa"
1325     ;;
1326   *-*-darwin*)
1327     host_makefile_frag="config/mh-darwin"
1328     ;;
1329   powerpc-*-aix*)
1330     host_makefile_frag="config/mh-ppc-aix"
1331     ;;
1332   rs6000-*-aix*)
1333     host_makefile_frag="config/mh-ppc-aix"
1334     ;;
1335 esac
1336 fi
1337
1338 if test "${build}" != "${host}" ; then
1339   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1340   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1341   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1342   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1343   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1344   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1345   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1346   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1347   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1348   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1349   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1350   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1351   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1352 else
1353   AR_FOR_BUILD="\$(AR)"
1354   AS_FOR_BUILD="\$(AS)"
1355   CC_FOR_BUILD="\$(CC)"
1356   CXX_FOR_BUILD="\$(CXX)"
1357   GCJ_FOR_BUILD="\$(GCJ)"
1358   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1359   GOC_FOR_BUILD="\$(GOC)"
1360   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1361   LD_FOR_BUILD="\$(LD)"
1362   NM_FOR_BUILD="\$(NM)"
1363   RANLIB_FOR_BUILD="\$(RANLIB)"
1364   WINDRES_FOR_BUILD="\$(WINDRES)"
1365   WINDMC_FOR_BUILD="\$(WINDMC)"
1366 fi
1367
1368 AC_PROG_CC
1369 AC_PROG_CXX
1370
1371 # We must set the default linker to the linker used by gcc for the correct
1372 # operation of libtool.  If LD is not defined and we are using gcc, try to
1373 # set the LD default to the ld used by gcc.
1374 if test -z "$LD"; then
1375   if test "$GCC" = yes; then
1376     case $build in
1377     *-*-mingw*)
1378       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1379     *)
1380       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1381     esac
1382     case $gcc_prog_ld in
1383     # Accept absolute paths.
1384     [[\\/]* | [A-Za-z]:[\\/]*)]
1385       LD="$gcc_prog_ld" ;;
1386     esac
1387   fi
1388 fi
1389
1390 # Check whether -static-libstdc++ -static-libgcc is supported.
1391 have_static_libs=no
1392 if test "$GCC" = yes; then
1393   saved_LDFLAGS="$LDFLAGS"
1394
1395   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1396   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1397   AC_LANG_PUSH(C++)
1398   AC_LINK_IFELSE([
1399 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1400 #error -static-libstdc++ not implemented
1401 #endif
1402 int main() {}],
1403     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1404     [AC_MSG_RESULT([no])])
1405   AC_LANG_POP(C++)
1406
1407   LDFLAGS="$saved_LDFLAGS"
1408 fi
1409
1410 ACX_PROG_GNAT
1411 ACX_PROG_CMP_IGNORE_INITIAL
1412
1413 AC_ARG_ENABLE([bootstrap],
1414 [AS_HELP_STRING([--enable-bootstrap],
1415                 [enable bootstrapping @<:@yes if native build@:>@])],,
1416 enable_bootstrap=default)
1417
1418 # Issue errors and warnings for invalid/strange bootstrap combinations.
1419 if test -r $srcdir/gcc/configure; then
1420   have_compiler=yes
1421 else
1422   have_compiler=no
1423 fi
1424
1425 case "$have_compiler:$host:$target:$enable_bootstrap" in
1426   *:*:*:no) ;;
1427
1428   # Default behavior.  Enable bootstrap if we have a compiler
1429   # and we are in a native configuration.
1430   yes:$build:$build:default)
1431     enable_bootstrap=yes ;;
1432
1433   *:*:*:default)
1434     enable_bootstrap=no ;;
1435
1436   # We have a compiler and we are in a native configuration, bootstrap is ok
1437   yes:$build:$build:yes)
1438     ;;
1439
1440   # Other configurations, but we have a compiler.  Assume the user knows
1441   # what he's doing.
1442   yes:*:*:yes)
1443     AC_MSG_WARN([trying to bootstrap a cross compiler])
1444     ;;
1445
1446   # No compiler: if they passed --enable-bootstrap explicitly, fail
1447   no:*:*:yes)
1448     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1449
1450   # Fail if wrong command line
1451   *)
1452     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1453     ;;
1454 esac
1455
1456 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1457 # C++98 compiler can still start the bootstrap.
1458 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1459   CXX="$CXX -std=gnu++98"
1460 fi
1461
1462 # Used for setting $lt_cv_objdir
1463 _LT_CHECK_OBJDIR
1464
1465 # Check for GMP, MPFR and MPC
1466 gmplibs="-lmpc -lmpfr -lgmp"
1467 gmpinc=
1468 have_gmp=no
1469
1470 # Specify a location for mpc
1471 # check for this first so it ends up on the link line before mpfr.
1472 AC_ARG_WITH(mpc,
1473 [AS_HELP_STRING([--with-mpc=PATH],
1474                 [specify prefix directory for installed MPC package.
1475                  Equivalent to --with-mpc-include=PATH/include
1476                  plus --with-mpc-lib=PATH/lib])])
1477 AC_ARG_WITH(mpc-include,
1478 [AS_HELP_STRING([--with-mpc-include=PATH],
1479                 [specify directory for installed MPC include files])])
1480 AC_ARG_WITH(mpc-lib,
1481 [AS_HELP_STRING([--with-mpc-lib=PATH],
1482                 [specify directory for the installed MPC library])])
1483
1484 if test "x$with_mpc" != x; then
1485   gmplibs="-L$with_mpc/lib $gmplibs"
1486   gmpinc="-I$with_mpc/include $gmpinc"
1487 fi
1488 if test "x$with_mpc_include" != x; then
1489   gmpinc="-I$with_mpc_include $gmpinc"
1490 fi
1491 if test "x$with_mpc_lib" != x; then
1492   gmplibs="-L$with_mpc_lib $gmplibs"
1493 fi
1494 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1495   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1496   gmpinc='-I$$s/mpc/src '"$gmpinc"
1497   # Do not test the mpc version.  Assume that it is sufficient, since
1498   # it is in the source tree, and the library has not been built yet
1499   # but it would be included on the link line in the version check below
1500   # hence making the test fail.
1501   have_gmp=yes
1502 fi
1503
1504 # Specify a location for mpfr
1505 # check for this first so it ends up on the link line before gmp.
1506 AC_ARG_WITH(mpfr-dir,
1507 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1508 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1509 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1510
1511 AC_ARG_WITH(mpfr,
1512 [AS_HELP_STRING([--with-mpfr=PATH],
1513                 [specify prefix directory for installed MPFR package.
1514                  Equivalent to --with-mpfr-include=PATH/include
1515                  plus --with-mpfr-lib=PATH/lib])])
1516 AC_ARG_WITH(mpfr-include,
1517 [AS_HELP_STRING([--with-mpfr-include=PATH],
1518                 [specify directory for installed MPFR include files])])
1519 AC_ARG_WITH(mpfr-lib,
1520 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1521                 [specify directory for the installed MPFR library])])
1522
1523 if test "x$with_mpfr" != x; then
1524   gmplibs="-L$with_mpfr/lib $gmplibs"
1525   gmpinc="-I$with_mpfr/include $gmpinc"
1526 fi
1527 if test "x$with_mpfr_include" != x; then
1528   gmpinc="-I$with_mpfr_include $gmpinc"
1529 fi
1530 if test "x$with_mpfr_lib" != x; then
1531   gmplibs="-L$with_mpfr_lib $gmplibs"
1532 fi
1533 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1534   # MPFR v3.1.0 moved the sources into a src sub-directory.
1535   if test -d ${srcdir}/mpfr/src; then
1536     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1537     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1538     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1539   else
1540     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1541     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1542     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1543   fi
1544   # Do not test the mpfr version.  Assume that it is sufficient, since
1545   # it is in the source tree, and the library has not been built yet
1546   # but it would be included on the link line in the version check below
1547   # hence making the test fail.
1548   have_gmp=yes
1549 fi
1550
1551 # Specify a location for gmp
1552 AC_ARG_WITH(gmp-dir,
1553 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1554 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1555 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1556
1557 AC_ARG_WITH(gmp,
1558 [AS_HELP_STRING([--with-gmp=PATH],
1559                 [specify prefix directory for the installed GMP package.
1560                  Equivalent to --with-gmp-include=PATH/include
1561                  plus --with-gmp-lib=PATH/lib])])
1562 AC_ARG_WITH(gmp-include,
1563 [AS_HELP_STRING([--with-gmp-include=PATH],
1564                 [specify directory for installed GMP include files])])
1565 AC_ARG_WITH(gmp-lib,
1566 [AS_HELP_STRING([--with-gmp-lib=PATH],
1567                 [specify directory for the installed GMP library])])
1568
1569
1570 if test "x$with_gmp" != x; then
1571   gmplibs="-L$with_gmp/lib $gmplibs"
1572   gmpinc="-I$with_gmp/include $gmpinc"
1573 fi
1574 if test "x$with_gmp_include" != x; then
1575   gmpinc="-I$with_gmp_include $gmpinc"
1576 fi
1577 if test "x$with_gmp_lib" != x; then
1578   gmplibs="-L$with_gmp_lib $gmplibs"
1579 fi
1580 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1581   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1582   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1583   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1584   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1585   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1586   # Do not test the gmp version.  Assume that it is sufficient, since
1587   # it is in the source tree, and the library has not been built yet
1588   # but it would be included on the link line in the version check below
1589   # hence making the test fail.
1590   have_gmp=yes
1591 fi
1592
1593 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1594   have_gmp=yes
1595   saved_CFLAGS="$CFLAGS"
1596   CFLAGS="$CFLAGS $gmpinc"
1597   # Check for the recommended and required versions of GMP.
1598   AC_MSG_CHECKING([for the correct version of gmp.h])
1599   AC_TRY_COMPILE([#include "gmp.h"],[
1600   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1601   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1602   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1603   choke me
1604   #endif
1605   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1606   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1607   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1608   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1609   choke me
1610   #endif
1611   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1612    [AC_MSG_RESULT([no]); have_gmp=no])
1613
1614   # If we have GMP, check the MPFR version.
1615   if test x"$have_gmp" = xyes; then
1616     # Check for the recommended and required versions of MPFR.
1617     AC_MSG_CHECKING([for the correct version of mpfr.h])
1618     AC_TRY_COMPILE([#include <gmp.h>
1619     #include <mpfr.h>],[
1620     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1621     choke me
1622     #endif
1623     ], [AC_TRY_COMPILE([#include <gmp.h>
1624     #include <mpfr.h>],[
1625     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1626     choke me
1627     #endif
1628     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1629      [AC_MSG_RESULT([no]); have_gmp=no])
1630   fi
1631
1632   # Check for the MPC header version.
1633   if test x"$have_gmp" = xyes ; then
1634     # Check for the recommended and required versions of MPC.
1635     AC_MSG_CHECKING([for the correct version of mpc.h])
1636     AC_TRY_COMPILE([#include <mpc.h>],[
1637     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1638     choke me
1639     #endif
1640     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1641     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1642     choke me
1643     #endif
1644     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1645      [AC_MSG_RESULT([no]); have_gmp=no])
1646   fi
1647
1648   # Now check the MPFR library.
1649   if test x"$have_gmp" = xyes; then
1650     saved_LIBS="$LIBS"
1651     LIBS="$LIBS $gmplibs"
1652     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1653     AC_TRY_LINK([#include <mpc.h>],[
1654     mpfr_t n;
1655     mpfr_t x;
1656     mpc_t c;
1657     int t;
1658     mpfr_init (n);
1659     mpfr_init (x);
1660     mpfr_atan2 (n, n, x, GMP_RNDN);
1661     mpfr_erfc (n, x, GMP_RNDN);
1662     mpfr_subnormalize (x, t, GMP_RNDN);
1663     mpfr_clear(n);
1664     mpfr_clear(x);
1665     mpc_init2 (c, 53);
1666     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1667     mpc_cosh (c, c, MPC_RNDNN);
1668     mpc_pow (c, c, c, MPC_RNDNN);
1669     mpc_acosh (c, c, MPC_RNDNN);
1670     mpc_clear (c);
1671     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1672     LIBS="$saved_LIBS"
1673   fi
1674
1675   CFLAGS="$saved_CFLAGS"
1676
1677 # The library versions listed in the error message below should match
1678 # the HARD-minimums enforced above.
1679   if test x$have_gmp != xyes; then
1680     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1681 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1682 their locations.  Source code for these libraries can be found at
1683 their respective hosting sites as well as at
1684 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1685 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1686 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1687 make sure that you have installed both the libraries and the header
1688 files.  They may be located in separate packages.])
1689   fi
1690 fi
1691
1692 # Flags needed for both GMP, MPFR and/or MPC.
1693 AC_SUBST(gmplibs)
1694 AC_SUBST(gmpinc)
1695 AC_SUBST(extra_mpfr_configure_flags)
1696 AC_SUBST(extra_mpc_gmp_configure_flags)
1697 AC_SUBST(extra_mpc_mpfr_configure_flags)
1698 AC_SUBST(extra_isl_gmp_configure_flags)
1699
1700 # Allow host libstdc++ to be specified for static linking with PPL.
1701 AC_ARG_WITH(host-libstdcxx,
1702 [AS_HELP_STRING([--with-host-libstdcxx=L],
1703                 [use linker arguments L to link with libstdc++
1704                  when linking with PPL])])
1705
1706 case $with_host_libstdcxx in
1707   no|yes)
1708     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1709     ;;
1710 esac
1711
1712 # Libraries to use for stage1 or when not bootstrapping.
1713 AC_ARG_WITH(stage1-libs,
1714 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1715 [if test "$withval" = "no" -o "$withval" = "yes"; then
1716    stage1_libs=
1717  else
1718    stage1_libs=$withval
1719  fi],
1720 [stage1_libs=$with_host_libstdcxx])
1721 AC_SUBST(stage1_libs)
1722
1723 # Linker flags to use for stage1 or when not bootstrapping.
1724 AC_ARG_WITH(stage1-ldflags,
1725 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1726 [if test "$withval" = "no" -o "$withval" = "yes"; then
1727    stage1_ldflags=
1728  else
1729    stage1_ldflags=$withval
1730  fi],
1731 [stage1_ldflags=
1732  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1733  # if supported.  But if the user explicitly specified the libraries to use,
1734  # trust that they are doing what they want.
1735  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1736    stage1_ldflags="-static-libstdc++ -static-libgcc"
1737  fi])
1738 AC_SUBST(stage1_ldflags)
1739
1740 # Libraries to use for stage2 and later builds.  This defaults to the
1741 # argument passed to --with-host-libstdcxx.
1742 AC_ARG_WITH(boot-libs,
1743 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1744 [if test "$withval" = "no" -o "$withval" = "yes"; then
1745    poststage1_libs=
1746  else
1747    poststage1_libs=$withval
1748  fi],
1749 [poststage1_libs=$with_host_libstdcxx])
1750 AC_SUBST(poststage1_libs)
1751
1752 # Linker flags to use for stage2 and later builds.
1753 AC_ARG_WITH(boot-ldflags,
1754 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1755                 [linker flags for stage2 and later])],
1756 [if test "$withval" = "no" -o "$withval" = "yes"; then
1757    poststage1_ldflags=
1758  else
1759    poststage1_ldflags=$withval
1760  fi],
1761 [poststage1_ldflags=
1762  # In stages 2 and 3, default to linking libstdc++ and libgcc
1763  # statically.  But if the user explicitly specified the libraries to
1764  # use, trust that they are doing what they want.
1765  if test "$poststage1_libs" = ""; then
1766    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1767  fi])
1768 AC_SUBST(poststage1_ldflags)
1769
1770 # GCC GRAPHITE dependency ISL.
1771 # Basic setup is inlined here, actual checks are in config/isl.m4
1772
1773 AC_ARG_WITH(isl,
1774   [AS_HELP_STRING(
1775    [--with-isl=PATH],
1776    [Specify prefix directory for the installed ISL package.
1777     Equivalent to --with-isl-include=PATH/include
1778     plus --with-isl-lib=PATH/lib])])
1779
1780 # Treat --without-isl as a request to disable
1781 # GRAPHITE support and skip all following checks.
1782 if test "x$with_isl" != "xno"; then
1783   # Check for ISL
1784   dnl Provide configure switches and initialize islinc & isllibs
1785   dnl with user input.
1786   ISL_INIT_FLAGS
1787   dnl The versions of ISL that work for Graphite
1788   ISL_CHECK_VERSION()
1789   dnl Only execute fail-action, if ISL has been requested.
1790   ISL_IF_FAILED([
1791     AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
1792 fi
1793
1794 # If the ISL check failed, disable builds of in-tree variant of ISL
1795 if test "x$with_isl" = xno ||
1796    test "x$gcc_cv_isl" = xno; then
1797   noconfigdirs="$noconfigdirs isl"
1798   islinc=
1799 fi
1800
1801 AC_SUBST(isllibs)
1802 AC_SUBST(islinc)
1803
1804 # Check for LTO support.
1805 AC_ARG_ENABLE(lto,
1806 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1807 enable_lto=$enableval,
1808 enable_lto=yes; default_enable_lto=yes)
1809
1810 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1811   build_lto_plugin=yes
1812 ],[if test x"$default_enable_lto" = x"yes" ; then
1813     case $target in
1814       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1815       # On other non-ELF platforms, LTO has yet to be validated.
1816       *) enable_lto=no ;;
1817     esac
1818   else
1819   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1820   # It would also be nice to check the binutils support, but we don't
1821   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1822   # warn during gcc/ subconfigure; unless you're bootstrapping with
1823   # -flto it won't be needed until after installation anyway.
1824     case $target in
1825       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1826       *) if test x"$enable_lto" = x"yes"; then
1827         AC_MSG_ERROR([LTO support is not enabled for this target.])
1828         fi
1829       ;;
1830     esac
1831   fi
1832   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1833   # Build it unless LTO was explicitly disabled.
1834   case $target in
1835     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1836     *) ;;
1837   esac
1838 ])
1839
1840 AC_ARG_ENABLE(linker-plugin-configure-flags,
1841   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1842     [additional flags for configuring linker plugins @<:@none@:>@])],
1843   extra_linker_plugin_configure_flags=$enableval,
1844   extra_linker_plugin_configure_flags=)
1845 AC_SUBST(extra_linker_plugin_configure_flags)
1846 AC_ARG_ENABLE(linker-plugin-flags,
1847   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1848     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1849   extra_linker_plugin_flags=$enableval,
1850   extra_linker_plugin_flags=)
1851 AC_SUBST(extra_linker_plugin_flags)
1852
1853
1854 # By default, C and C++ are the only stage 1 languages.
1855 stage1_languages=,c,
1856
1857 # Target libraries that we bootstrap.
1858 bootstrap_target_libs=,target-libgcc,
1859
1860 # Figure out what language subdirectories are present.
1861 # Look if the user specified --enable-languages="..."; if not, use
1862 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1863 # go away some day.
1864 # NB:  embedded tabs in this IF block -- do not untabify
1865 if test -d ${srcdir}/gcc; then
1866   if test x"${enable_languages+set}" != xset; then
1867     if test x"${LANGUAGES+set}" = xset; then
1868       enable_languages="${LANGUAGES}"
1869         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1870     else
1871       enable_languages=all
1872     fi
1873   else
1874     if test x"${enable_languages}" = x ||
1875        test x"${enable_languages}" = xyes;
1876        then
1877       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1878       exit 1
1879     fi
1880   fi
1881   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1882
1883   # 'f95' is the old name for the 'fortran' language. We issue a warning
1884   # and make the substitution.
1885   case ,${enable_languages}, in
1886     *,f95,*)
1887       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1888       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1889       ;;
1890   esac
1891
1892   # If bootstrapping, C++ must be enabled.
1893   case ",$enable_languages,:$enable_bootstrap" in
1894     *,c++,*:*) ;;
1895     *:yes)
1896       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1897         enable_languages="${enable_languages},c++"
1898       else
1899         AC_MSG_ERROR([bootstrapping requires c++ sources])
1900       fi
1901       ;;
1902   esac
1903
1904   # First scan to see if an enabled language requires some other language.
1905   # We assume that a given config-lang.in will list all the language
1906   # front ends it requires, even if some are required indirectly.
1907   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1908     case ${lang_frag} in
1909       ..) ;;
1910       # The odd quoting in the next line works around
1911       # an apparent bug in bash 1.12 on linux.
1912       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1913       *)
1914         # From the config-lang.in, get $language, $lang_requires, and
1915         # $lang_requires_boot_languages.
1916         language=
1917         lang_requires=
1918         lang_requires_boot_languages=
1919         . ${lang_frag}
1920         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1921           case ,${enable_languages}, in
1922             *,$other,*) ;;
1923             *,all,*) ;;
1924             *,$language,*)
1925               echo " \`$other' language required by \`$language'; enabling" 1>&2
1926               enable_languages="${enable_languages},${other}"
1927               ;;
1928           esac
1929         done
1930         for other in ${lang_requires_boot_languages} ; do
1931           if test "$other" != "c"; then
1932             case ,${enable_stage1_languages}, in
1933               *,$other,*) ;;
1934               *,all,*) ;;
1935               *)
1936                 case ,${enable_languages}, in
1937                   *,$language,*)
1938                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1939                     enable_stage1_languages="$enable_stage1_languages,${other}"
1940                     ;;
1941                 esac
1942                 ;;
1943             esac
1944           fi
1945         done
1946         ;;
1947     esac
1948   done
1949
1950   new_enable_languages=,c,
1951
1952   # If LTO is enabled, add the LTO front end.
1953   if test "$enable_lto" = "yes" ; then
1954     case ,${enable_languages}, in
1955       *,lto,*) ;;
1956       *) enable_languages="${enable_languages},lto" ;;
1957     esac
1958     if test "${build_lto_plugin}" = "yes" ; then
1959       configdirs="$configdirs lto-plugin"
1960     fi
1961   fi
1962
1963   # If we're building an offloading compiler, add the LTO front end.
1964   if test x"$enable_as_accelerator_for" != x ; then
1965     case ,${enable_languages}, in
1966       *,lto,*) ;;
1967       *) enable_languages="${enable_languages},lto" ;;
1968     esac
1969   fi
1970
1971   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1972   potential_languages=,c,
1973
1974   enabled_target_libs=
1975   disabled_target_libs=
1976
1977   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1978     case ${lang_frag} in
1979       ..) ;;
1980       # The odd quoting in the next line works around
1981       # an apparent bug in bash 1.12 on linux.
1982       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1983       *)
1984         # From the config-lang.in, get $language, $target_libs,
1985         # $lang_dirs, $boot_language, and $build_by_default
1986         language=
1987         target_libs=
1988         lang_dirs=
1989         subdir_requires=
1990         boot_language=no
1991         build_by_default=yes
1992         . ${lang_frag}
1993         if test x${language} = x; then
1994           echo "${lang_frag} doesn't set \$language." 1>&2
1995           exit 1
1996         fi
1997
1998         if test "$language" = "c++"; then
1999           boot_language=yes
2000         fi
2001
2002         add_this_lang=no
2003         case ,${enable_languages}, in
2004           *,${language},*)
2005             # Language was explicitly selected; include it
2006             # unless it is C, which is enabled by default.
2007             if test "$language" != "c"; then
2008               add_this_lang=yes
2009             fi
2010             ;;
2011           *,all,*)
2012             # 'all' was selected, select it if it is a default language
2013             if test "$language" != "c"; then
2014               add_this_lang=${build_by_default}
2015             fi
2016             ;;
2017         esac
2018
2019         # Disable languages that need other directories if these aren't available.
2020         for i in $subdir_requires; do
2021           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2022           case ,${enable_languages}, in
2023             *,${language},*)
2024               # Specifically requested language; tell them.
2025               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2026               ;;
2027             *)
2028               # Silently disable.
2029               add_this_lang=unsupported
2030               ;;
2031           esac
2032         done
2033
2034         # Disable Ada if no preexisting GNAT is available.
2035         case ,${enable_languages},:${language}:${have_gnat} in
2036           *,${language},*:ada:no)
2037             # Specifically requested language; tell them.
2038             AC_MSG_ERROR([GNAT is required to build $language])
2039             ;;
2040           *:ada:no)
2041             # Silently disable.
2042             add_this_lang=unsupported
2043             ;;
2044         esac
2045
2046         # Disable a language that is unsupported by the target.
2047         case " $unsupported_languages " in
2048           *" $language "*)
2049             add_this_lang=unsupported
2050             ;;
2051         esac
2052
2053         case $add_this_lang in
2054           unsupported)
2055             # Remove language-dependent dirs.
2056             disabled_target_libs="$disabled_target_libs $target_libs"
2057             noconfigdirs="$noconfigdirs $lang_dirs"
2058             ;;
2059           no)
2060             # Remove language-dependent dirs; still show language as supported.
2061             disabled_target_libs="$disabled_target_libs $target_libs"
2062             noconfigdirs="$noconfigdirs $lang_dirs"
2063             potential_languages="${potential_languages}${language},"
2064             ;;
2065           yes)
2066             new_enable_languages="${new_enable_languages}${language},"
2067             potential_languages="${potential_languages}${language},"
2068             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2069             enabled_target_libs="$enabled_target_libs $target_libs"
2070             case "${boot_language}:,$enable_stage1_languages," in
2071               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2072                 # Add to (comma-separated) list of stage 1 languages.
2073                 case ",$stage1_languages," in
2074                   *,$language,* | ,yes, | ,all,) ;;
2075                   *) stage1_languages="${stage1_languages}${language}," ;;
2076                 esac
2077                 # We need to bootstrap any supporting libraries.
2078                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2079                 ;;
2080             esac
2081             ;;
2082         esac
2083         ;;
2084     esac
2085   done
2086
2087   # Add target libraries which are only needed for disabled languages
2088   # to noconfigdirs.
2089   if test -n "$disabled_target_libs"; then
2090     for dir in $disabled_target_libs; do
2091       case " $enabled_target_libs " in
2092       *" ${dir} "*) ;;
2093       *) noconfigdirs="$noconfigdirs $dir" ;;
2094       esac
2095     done
2096   fi
2097
2098   AC_ARG_ENABLE(stage1-languages,
2099   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2100                   [choose additional languages to build during
2101                   stage1.  Mostly useful for compiler development])],
2102   [case ,${enable_stage1_languages}, in
2103     ,no,|,,)
2104       # Set it to something that will have no effect in the loop below
2105       enable_stage1_languages=c ;;
2106     ,yes,)
2107       enable_stage1_languages=`echo $new_enable_languages | \
2108         sed -e "s/^,//" -e "s/,$//" ` ;;
2109     *,all,*)
2110       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2111         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2112   esac
2113
2114   # Add "good" languages from enable_stage1_languages to stage1_languages,
2115   # while "bad" languages go in missing_languages.  Leave no duplicates.
2116   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2117     case $potential_languages in
2118       *,$i,*)
2119         case $stage1_languages in
2120           *,$i,*) ;;
2121           *) stage1_languages="$stage1_languages$i," ;;
2122         esac ;;
2123       *)
2124         case $missing_languages in
2125           *,$i,*) ;;
2126           *) missing_languages="$missing_languages$i," ;;
2127         esac ;;
2128      esac
2129   done])
2130
2131   # Remove leading/trailing commas that were added for simplicity
2132   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2133   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2134   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2135   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2136
2137   if test "x$missing_languages" != x; then
2138     AC_MSG_ERROR([
2139 The following requested languages could not be built: ${missing_languages}
2140 Supported languages are: ${potential_languages}])
2141   fi
2142   if test "x$new_enable_languages" != "x$enable_languages"; then
2143     echo The following languages will be built: ${new_enable_languages}
2144     enable_languages="$new_enable_languages"
2145   fi
2146
2147   AC_SUBST(stage1_languages)
2148   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2149 fi
2150
2151 # Handle --disable-<component> generically.
2152 for dir in $configdirs $build_configdirs $target_configdirs ; do
2153   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2154   varname=`echo $dirname | sed -e s/+/_/g`
2155   if eval test x\${enable_${varname}} "=" xno ; then
2156     noconfigdirs="$noconfigdirs $dir"
2157   fi
2158 done
2159
2160 # Check for Boehm's garbage collector
2161 AC_ARG_ENABLE(objc-gc,
2162 [AS_HELP_STRING([--enable-objc-gc],
2163                 [enable use of Boehm's garbage collector with the
2164                  GNU Objective-C runtime])],
2165 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2166   *,objc,*:*:yes:*target-boehm-gc*)
2167     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2168     ;;
2169 esac])
2170
2171 # Make sure we only build Boehm's garbage collector if required.
2172 case ,${enable_languages},:${enable_objc_gc} in
2173   *,objc,*:yes)
2174     # Keep target-boehm-gc if requested for Objective-C.
2175     ;;
2176   *)
2177     # Otherwise remove target-boehm-gc depending on target-libjava.
2178     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2179       noconfigdirs="$noconfigdirs target-boehm-gc"
2180     fi
2181     ;;
2182 esac
2183
2184 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2185 case ,${enable_languages}, in
2186   *,c++,*)
2187     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2188     case "${noconfigdirs}" in
2189       *target-libstdc++-v3*)
2190         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2191         ;;
2192       *) ;;
2193     esac
2194     ;;
2195   *)
2196     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2197     ;;
2198 esac
2199
2200 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2201 # $build_configdirs and $target_configdirs.
2202 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2203
2204 notsupp=""
2205 for dir in . $skipdirs $noconfigdirs ; do
2206   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2207   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2208     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2209     if test -r $srcdir/$dirname/configure ; then
2210       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2211         true
2212       else
2213         notsupp="$notsupp $dir"
2214       fi
2215     fi
2216   fi
2217   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2218     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2219     if test -r $srcdir/$dirname/configure ; then
2220       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2221         true
2222       else
2223         notsupp="$notsupp $dir"
2224       fi
2225     fi
2226   fi
2227   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2228     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2229     if test -r $srcdir/$dirname/configure ; then
2230       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2231         true
2232       else
2233         notsupp="$notsupp $dir"
2234       fi
2235     fi
2236   fi
2237 done
2238
2239 # Quietly strip out all directories which aren't configurable in this tree.
2240 # This relies on all configurable subdirectories being autoconfiscated, which
2241 # is now the case.
2242 build_configdirs_all="$build_configdirs"
2243 build_configdirs=
2244 for i in ${build_configdirs_all} ; do
2245   j=`echo $i | sed -e s/build-//g`
2246   if test -f ${srcdir}/$j/configure ; then
2247     build_configdirs="${build_configdirs} $i"
2248   fi
2249 done
2250
2251 configdirs_all="$configdirs"
2252 configdirs=
2253 for i in ${configdirs_all} ; do
2254   if test -f ${srcdir}/$i/configure ; then
2255     configdirs="${configdirs} $i"
2256   fi
2257 done
2258
2259 target_configdirs_all="$target_configdirs"
2260 target_configdirs=
2261 for i in ${target_configdirs_all} ; do
2262   j=`echo $i | sed -e s/target-//g`
2263   if test -f ${srcdir}/$j/configure ; then
2264     target_configdirs="${target_configdirs} $i"
2265   fi
2266 done
2267
2268 # Exclude target-zlib if target-libjava isn't built.
2269 case ${target_configdirs} in
2270 *target-libjava*)
2271   ;;
2272 *)
2273   target_configdirs="`echo ${target_configdirs} | sed -e 's/target-zlib//'`"
2274   ;;
2275 esac
2276
2277 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2278 # so we have to add it after the preceding checks.
2279 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2280 then
2281   case " $configdirs " in
2282     *" libiberty "*)
2283       # If we can build libiberty, we can also build libiberty-linker-plugin.
2284       configdirs="$configdirs libiberty-linker-plugin"
2285       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2286         --with-libiberty=../libiberty-linker-plugin";;
2287     *)
2288       AC_MSG_ERROR([libiberty missing]);;
2289   esac
2290 fi
2291
2292 # Sometimes we have special requirements for the host libiberty.
2293 extra_host_libiberty_configure_flags=
2294 extra_host_zlib_configure_flags=
2295 case " $configdirs " in
2296   *" lto-plugin "* | *" libcc1 "*)
2297     # When these are to be built as shared libraries, the same applies to
2298     # libiberty.
2299     extra_host_libiberty_configure_flags=--enable-shared
2300     ;;
2301   *" bfd "*)
2302     # When bfd is to be built as a shared library, the same applies to
2303     # zlib.
2304     if test "$enable_shared" = "yes"; then
2305       extra_host_zlib_configure_flags=--enable-host-shared
2306     fi
2307     ;;
2308 esac
2309 AC_SUBST(extra_host_libiberty_configure_flags)
2310 AC_SUBST(extra_host_zlib_configure_flags)
2311
2312 # Produce a warning message for the subdirs we can't configure.
2313 # This isn't especially interesting in the Cygnus tree, but in the individual
2314 # FSF releases, it's important to let people know when their machine isn't
2315 # supported by the one or two programs in a package.
2316
2317 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2318   # If $appdirs is non-empty, at least one of those directories must still
2319   # be configured, or we error out.  (E.g., if the gas release supports a
2320   # specified target in some subdirs but not the gas subdir, we shouldn't
2321   # pretend that all is well.)
2322   if test -n "$appdirs" ; then
2323     for dir in $appdirs ; do
2324       if test -r $dir/Makefile.in ; then
2325         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2326           appdirs=""
2327           break
2328         fi
2329         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2330           appdirs=""
2331           break
2332         fi
2333       fi
2334     done
2335     if test -n "$appdirs" ; then
2336       echo "*** This configuration is not supported by this package." 1>&2
2337       exit 1
2338     fi
2339   fi
2340   # Okay, some application will build, or we don't care to check.  Still
2341   # notify of subdirs not getting built.
2342   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2343   echo "    ${notsupp}" 1>&2
2344   echo "    (Any other directories should still work fine.)" 1>&2
2345 fi
2346
2347 case "$host" in
2348   *msdosdjgpp*)
2349     enable_gdbtk=no ;;
2350 esac
2351
2352 # To find our prefix, in gcc_cv_tool_prefix.
2353 ACX_TOOL_DIRS
2354
2355 copy_dirs=
2356
2357 AC_ARG_WITH([build-sysroot],
2358   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2359                   [use sysroot as the system root during the build])],
2360   [if test x"$withval" != x ; then
2361      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2362    fi],
2363   [SYSROOT_CFLAGS_FOR_TARGET=])
2364 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2365
2366 AC_ARG_WITH([debug-prefix-map],
2367   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2368                   [map A to B, C to D ... in debug information])],
2369   [if test x"$withval" != x; then
2370      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2371      for debug_map in $withval; do
2372        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2373      done
2374    fi],
2375   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2376 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2377
2378 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2379 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2380 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2381 # We want to ensure that TARGET libraries (which we know are built with
2382 # gcc) are built with "-O2 -g", so include those options when setting
2383 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2384 if test "x$CFLAGS_FOR_TARGET" = x; then
2385   if test "x${is_cross_compiler}" = xyes; then
2386     CFLAGS_FOR_TARGET="-g -O2"
2387   else
2388     CFLAGS_FOR_TARGET=$CFLAGS
2389     case " $CFLAGS " in
2390       *" -O2 "*) ;;
2391       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2392     esac
2393     case " $CFLAGS " in
2394       *" -g "* | *" -g3 "*) ;;
2395       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2396     esac
2397   fi
2398 fi
2399 AC_SUBST(CFLAGS_FOR_TARGET)
2400
2401 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2402   if test "x${is_cross_compiler}" = xyes; then
2403     CXXFLAGS_FOR_TARGET="-g -O2"
2404   else
2405     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2406     case " $CXXFLAGS " in
2407       *" -O2 "*) ;;
2408       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2409     esac
2410     case " $CXXFLAGS " in
2411       *" -g "* | *" -g3 "*) ;;
2412       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2413     esac
2414   fi
2415 fi
2416 AC_SUBST(CXXFLAGS_FOR_TARGET)
2417
2418 AC_SUBST(LDFLAGS_FOR_TARGET)
2419
2420 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2421 # the named directory are copied to $(tooldir)/sys-include.
2422 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2423   if test x${is_cross_compiler} = xno ; then
2424     echo 1>&2 '***' --with-headers is only supported when cross compiling
2425     exit 1
2426   fi
2427   if test x"${with_headers}" != xyes ; then
2428     x=${gcc_cv_tool_prefix}
2429     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2430   fi
2431 fi
2432
2433 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2434 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2435 # are permitted.
2436 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2437   if test x${is_cross_compiler} = xno ; then
2438     echo 1>&2 '***' --with-libs is only supported when cross compiling
2439     exit 1
2440   fi
2441   if test x"${with_libs}" != xyes ; then
2442     # Copy the libraries in reverse order, so that files in the first named
2443     # library override files in subsequent libraries.
2444     x=${gcc_cv_tool_prefix}
2445     for l in ${with_libs}; do
2446       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2447     done
2448   fi
2449 fi
2450
2451 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2452 #
2453 # This is done by determining whether or not the appropriate directory
2454 # is available, and by checking whether or not specific configurations
2455 # have requested that this magic not happen.
2456 #
2457 # The command line options always override the explicit settings in
2458 # configure.ac, and the settings in configure.ac override this magic.
2459 #
2460 # If the default for a toolchain is to use GNU as and ld, and you don't
2461 # want to do that, then you should use the --without-gnu-as and
2462 # --without-gnu-ld options for the configure script.  Similarly, if
2463 # the default is to use the included zlib and you don't want to do that,
2464 # you should use the --with-system-zlib option for the configure script.
2465
2466 if test x${use_gnu_as} = x &&
2467    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2468   with_gnu_as=yes
2469   extra_host_args="$extra_host_args --with-gnu-as"
2470 fi
2471
2472 if test x${use_gnu_ld} = x &&
2473    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2474   with_gnu_ld=yes
2475   extra_host_args="$extra_host_args --with-gnu-ld"
2476 fi
2477
2478 if test x${use_included_zlib} = x &&
2479    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2480   :
2481 else
2482   with_system_zlib=yes
2483   extra_host_args="$extra_host_args --with-system-zlib"
2484 fi
2485
2486 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2487 # can detect this case.
2488
2489 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2490   with_newlib=yes
2491   extra_host_args="$extra_host_args --with-newlib"
2492 fi
2493
2494 # Handle ${copy_dirs}
2495 set fnord ${copy_dirs}
2496 shift
2497 while test $# != 0 ; do
2498   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2499     :
2500   else
2501     echo Copying $1 to $2
2502
2503     # Use the install script to create the directory and all required
2504     # parent directories.
2505     if test -d $2 ; then
2506       :
2507     else
2508       echo >config.temp
2509       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2510     fi
2511
2512     # Copy the directory, assuming we have tar.
2513     # FIXME: Should we use B in the second tar?  Not all systems support it.
2514     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2515
2516     # It is the responsibility of the user to correctly adjust all
2517     # symlinks.  If somebody can figure out how to handle them correctly
2518     # here, feel free to add the code.
2519
2520     echo $1 > $2/COPIED
2521   fi
2522   shift; shift
2523 done
2524
2525 # Determine a target-dependent exec_prefix that the installed
2526 # gcc will search in.  Keep this list sorted by triplet, with
2527 # the *-*-osname triplets last.
2528 md_exec_prefix=
2529 case "${target}" in
2530   i[[34567]]86-pc-msdosdjgpp*)
2531     md_exec_prefix=/dev/env/DJDIR/bin
2532     ;;
2533   *-*-hpux* | \
2534   *-*-nto-qnx* | \
2535   *-*-solaris2*)
2536     md_exec_prefix=/usr/ccs/bin
2537     ;;
2538 esac
2539
2540 extra_arflags_for_target=
2541 extra_nmflags_for_target=
2542 extra_ranlibflags_for_target=
2543 target_makefile_frag=/dev/null
2544 case "${target}" in
2545   spu-*-*)
2546     target_makefile_frag="config/mt-spu"
2547     ;;
2548   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2549     target_makefile_frag="config/mt-sde"
2550     ;;
2551   mipsisa*-*-elfoabi*)
2552     target_makefile_frag="config/mt-mips-elfoabi"
2553     ;;
2554   mips*-*-*linux* | mips*-*-gnu*)
2555     target_makefile_frag="config/mt-mips-gnu"
2556     ;;
2557   nios2-*-elf*)
2558     target_makefile_frag="config/mt-nios2-elf"
2559     ;;
2560   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2561     target_makefile_frag="config/mt-gnu"
2562     ;;
2563   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2564     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2565     # commands to handle both 32-bit and 64-bit objects.  These flags are
2566     # harmless if we're using GNU nm or ar.
2567     extra_arflags_for_target=" -X32_64"
2568     extra_nmflags_for_target=" -B -X32_64"
2569     ;;
2570 esac
2571
2572 alphaieee_frag=/dev/null
2573 case $target in
2574   alpha*-*-*)
2575     # This just makes sure to use the -mieee option to build target libs.
2576     # This should probably be set individually by each library.
2577     alphaieee_frag="config/mt-alphaieee"
2578     ;;
2579 esac
2580
2581 # If --enable-target-optspace always use -Os instead of -O2 to build
2582 # the target libraries, similarly if it is not specified, use -Os
2583 # on selected platforms.
2584 ospace_frag=/dev/null
2585 case "${enable_target_optspace}:${target}" in
2586   yes:*)
2587     ospace_frag="config/mt-ospace"
2588     ;;
2589   :d30v-*)
2590     ospace_frag="config/mt-d30v"
2591     ;;
2592   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2593     ospace_frag="config/mt-ospace"
2594     ;;
2595   no:* | :*)
2596     ;;
2597   *)
2598     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2599     ;;
2600 esac
2601
2602 # Some systems (e.g., one of the i386-aix systems the gas testers are
2603 # using) don't handle "\$" correctly, so don't use it here.
2604 tooldir='${exec_prefix}'/${target_noncanonical}
2605 build_tooldir=${tooldir}
2606
2607 # Create a .gdbinit file which runs the one in srcdir
2608 # and tells GDB to look there for source files.
2609
2610 if test -r ${srcdir}/.gdbinit ; then
2611   case ${srcdir} in
2612     .) ;;
2613     *) cat > ./.gdbinit <<EOF
2614 # ${NO_EDIT}
2615 dir ${srcdir}
2616 dir .
2617 source ${srcdir}/.gdbinit
2618 EOF
2619     ;;
2620   esac
2621 fi
2622
2623 # Make sure that the compiler is able to generate an executable.  If it
2624 # can't, we are probably in trouble.  We don't care whether we can run the
2625 # executable--we might be using a cross compiler--we only care whether it
2626 # can be created.  At this point the main configure script has set CC.
2627 we_are_ok=no
2628 echo "int main () { return 0; }" > conftest.c
2629 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2630 if test $? = 0 ; then
2631   if test -s conftest || test -s conftest.exe ; then
2632     we_are_ok=yes
2633   fi
2634 fi
2635 case $we_are_ok in
2636   no)
2637     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2638     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2639     rm -f conftest*
2640     exit 1
2641     ;;
2642 esac
2643 rm -f conftest*
2644
2645 # Decide which environment variable is used to find dynamic libraries.
2646 case "${host}" in
2647   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2648   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2649   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2650   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2651 esac
2652
2653 # On systems where the dynamic library environment variable is PATH,
2654 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2655 # built executables to PATH.
2656 if test "$RPATH_ENVVAR" = PATH; then
2657   GCC_SHLIB_SUBDIR=/shlib
2658 else
2659   GCC_SHLIB_SUBDIR=
2660 fi
2661
2662 # Adjust the toplevel makefile according to whether bootstrap was selected.
2663 case $enable_bootstrap in
2664   yes)
2665     bootstrap_suffix=bootstrap
2666     BUILD_CONFIG=bootstrap-debug
2667     ;;
2668   no)
2669     bootstrap_suffix=no-bootstrap
2670     BUILD_CONFIG=
2671     ;;
2672 esac
2673
2674 AC_MSG_CHECKING(for default BUILD_CONFIG)
2675
2676 AC_ARG_WITH([build-config],
2677   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2678                   [use config/NAME.mk build configuration])],
2679   [case $with_build_config in
2680    yes) with_build_config= ;;
2681    no) with_build_config= BUILD_CONFIG= ;;
2682    esac])
2683
2684 if test "x${with_build_config}" != x; then
2685   BUILD_CONFIG=$with_build_config
2686 else
2687   case $BUILD_CONFIG in
2688   bootstrap-debug)
2689     if echo "int f (void) { return 0; }" > conftest.c &&
2690        ${CC} -c conftest.c &&
2691        mv conftest.o conftest.o.g0 &&
2692        ${CC} -c -g conftest.c &&
2693        mv conftest.o conftest.o.g &&
2694        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2695       :
2696     else
2697       BUILD_CONFIG=
2698     fi
2699     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2700     ;;
2701   esac
2702 fi
2703 AC_MSG_RESULT($BUILD_CONFIG)
2704 AC_SUBST(BUILD_CONFIG)
2705
2706 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2707 AC_MSG_CHECKING([for --enable-vtable-verify])
2708 AC_ARG_ENABLE(vtable-verify,
2709 [AS_HELP_STRING([--enable-vtable-verify],
2710                 [Enable vtable verification feature])],
2711 [case "$enableval" in
2712  yes) enable_vtable_verify=yes ;;
2713  no)  enable_vtable_verify=no ;;
2714  *)   enable_vtable_verify=no;;
2715  esac],
2716 [enable_vtable_verify=no])
2717 AC_MSG_RESULT($enable_vtable_verify)
2718
2719 # Record target_configdirs and the configure arguments for target and
2720 # build configuration in Makefile.
2721 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2722 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2723 bootstrap_fixincludes=no
2724
2725 # If we are building libgomp, bootstrap it.
2726 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2727   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2728 fi
2729
2730 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2731 # or bootstrap-ubsan, bootstrap it.
2732 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2733   case "$BUILD_CONFIG" in
2734     *bootstrap-asan* | *bootstrap-ubsan* )
2735       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2736       bootstrap_fixincludes=yes
2737       ;;
2738   esac
2739 fi
2740
2741 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2742 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2743    test "$enable_vtable_verify" != no; then
2744   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2745 fi
2746
2747 # If we are building libmpx, bootstrap it.
2748 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2749   bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2750 fi
2751
2752 # Determine whether gdb needs tk/tcl or not.
2753 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2754 # and in that case we want gdb to be built without tk.  Ugh!
2755 # In fact I believe gdb is the *only* package directly dependent on tk,
2756 # so we should be able to put the 'maybe's in unconditionally and
2757 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2758 # 100% sure that that's safe though.
2759
2760 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2761 case "$enable_gdbtk" in
2762   no)
2763     GDB_TK="" ;;
2764   yes)
2765     GDB_TK="${gdb_tk}" ;;
2766   *)
2767     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2768     # distro.  Eventually someone will fix this and move Insight, nee
2769     # gdbtk to a separate directory.
2770     if test -d ${srcdir}/gdb/gdbtk ; then
2771       GDB_TK="${gdb_tk}"
2772     else
2773       GDB_TK=""
2774     fi
2775     ;;
2776 esac
2777 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2778 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2779
2780 # Strip out unwanted targets.
2781
2782 # While at that, we remove Makefiles if we were started for recursive
2783 # configuration, so that the top-level Makefile reconfigures them,
2784 # like we used to do when configure itself was recursive.
2785
2786 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2787 # but now we're fixing up the Makefile ourselves with the additional
2788 # commands passed to AC_CONFIG_FILES.  Use separate variables
2789 # extrasub-{build,host,target} not because there is any reason to split
2790 # the substitutions up that way, but only to remain below the limit of
2791 # 99 commands in a script, for HP-UX sed.
2792 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2793
2794 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2795   yes:yes:*\ gold\ *:*,c++,*) ;;
2796   yes:yes:*\ gold\ *:*)
2797     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2798     ;;
2799 esac
2800
2801 extrasub_build=
2802 for module in ${build_configdirs} ; do
2803   if test -z "${no_recursion}" \
2804      && test -f ${build_subdir}/${module}/Makefile; then
2805     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2806     rm -f ${build_subdir}/${module}/Makefile
2807   fi
2808   extrasub_build="$extrasub_build
2809 /^@if build-$module\$/d
2810 /^@endif build-$module\$/d
2811 /^@if build-$module-$bootstrap_suffix\$/d
2812 /^@endif build-$module-$bootstrap_suffix\$/d"
2813 done
2814 extrasub_host=
2815 for module in ${configdirs} ; do
2816   if test -z "${no_recursion}"; then
2817     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2818       if test -f ${file}; then
2819         echo 1>&2 "*** removing ${file} to force reconfigure"
2820         rm -f ${file}
2821       fi
2822     done
2823   fi
2824   case ${module},${bootstrap_fixincludes} in
2825     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2826     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2827   esac
2828   extrasub_host="$extrasub_host
2829 /^@if $module\$/d
2830 /^@endif $module\$/d
2831 /^@if $module-$host_bootstrap_suffix\$/d
2832 /^@endif $module-$host_bootstrap_suffix\$/d"
2833 done
2834 extrasub_target=
2835 for module in ${target_configdirs} ; do
2836   if test -z "${no_recursion}" \
2837      && test -f ${target_subdir}/${module}/Makefile; then
2838     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2839     rm -f ${target_subdir}/${module}/Makefile
2840   fi
2841
2842   # We only bootstrap target libraries listed in bootstrap_target_libs.
2843   case $bootstrap_target_libs in
2844     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2845     *) target_bootstrap_suffix=no-bootstrap ;;
2846   esac
2847
2848   extrasub_target="$extrasub_target
2849 /^@if target-$module\$/d
2850 /^@endif target-$module\$/d
2851 /^@if target-$module-$target_bootstrap_suffix\$/d
2852 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2853 done
2854
2855 # Do the final fixup along with target modules.
2856 extrasub_target="$extrasub_target
2857 /^@if /,/^@endif /d"
2858
2859 # Create the serialization dependencies.  This uses a temporary file.
2860
2861 AC_ARG_ENABLE([serial-configure],
2862 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2863                 [force sequential configuration of
2864                  sub-packages for the host, target or build
2865                  machine, or all sub-packages])])
2866
2867 case ${enable_serial_configure} in
2868   yes)
2869     enable_serial_build_configure=yes
2870     enable_serial_host_configure=yes
2871     enable_serial_target_configure=yes
2872     ;;
2873 esac
2874
2875 # These force 'configure's to be done one at a time, to avoid problems
2876 # with contention over a shared config.cache.
2877 rm -f serdep.tmp
2878 echo '# serdep.tmp' > serdep.tmp
2879 olditem=
2880 test "x${enable_serial_build_configure}" = xyes &&
2881 for item in ${build_configdirs} ; do
2882   case ${olditem} in
2883     "") ;;
2884     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2885   esac
2886   olditem=${item}
2887 done
2888 olditem=
2889 test "x${enable_serial_host_configure}" = xyes &&
2890 for item in ${configdirs} ; do
2891   case ${olditem} in
2892     "") ;;
2893     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2894   esac
2895   olditem=${item}
2896 done
2897 olditem=
2898 test "x${enable_serial_target_configure}" = xyes &&
2899 for item in ${target_configdirs} ; do
2900   case ${olditem} in
2901     "") ;;
2902     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2903   esac
2904   olditem=${item}
2905 done
2906 serialization_dependencies=serdep.tmp
2907 AC_SUBST_FILE(serialization_dependencies)
2908
2909 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2910 # target, nonopt, and variable assignments.  These are the ones we
2911 # might not want to pass down to subconfigures.  The exception being
2912 # --cache-file=/dev/null, which is used to turn off the use of cache
2913 # files altogether, and which should be passed on to subconfigures.
2914 # Also strip program-prefix, program-suffix, and program-transform-name,
2915 # so that we can pass down a consistent program-transform-name.
2916 baseargs=
2917 tbaseargs=
2918 keep_next=no
2919 skip_next=no
2920 eval "set -- $ac_configure_args"
2921 for ac_arg
2922 do
2923   if test X"$skip_next" = X"yes"; then
2924     skip_next=no
2925     continue
2926   fi
2927   if test X"$keep_next" = X"yes"; then
2928     case $ac_arg in
2929       *\'*)
2930         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2931     esac
2932     baseargs="$baseargs '$ac_arg'"
2933     tbaseargs="$tbaseargs '$ac_arg'"
2934     keep_next=no
2935     continue
2936   fi
2937
2938   # Handle separated arguments.  Based on the logic generated by
2939   # autoconf 2.59.
2940   case $ac_arg in
2941     *=* | --config-cache | -C | -disable-* | --disable-* \
2942       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2943       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2944       | -with-* | --with-* | -without-* | --without-* | --x)
2945       separate_arg=no
2946       ;;
2947     -*)
2948       separate_arg=yes
2949       ;;
2950     *)
2951       separate_arg=no
2952       ;;
2953   esac
2954
2955   skip_targ=no
2956   case $ac_arg in
2957 changequote(,)
2958   --with-* | --without-*)
2959     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2960
2961     case $libopt in
2962     *[-_]include)
2963       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2964       ;;
2965     *[-_]lib)
2966       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2967       ;;
2968     *)
2969       lib=$libopt
2970       ;;
2971     esac
2972 changequote([,])
2973
2974     case $lib in
2975     mpc | mpfr | gmp | isl)
2976       # If we're processing --with-$lib, --with-$lib-include or
2977       # --with-$lib-lib, for one of the libs above, and target is
2978       # different from host, don't pass the current argument to any
2979       # target library's configure.
2980       if test x$is_cross_compiler = xyes; then
2981         skip_targ=yes
2982       fi
2983       ;;
2984     esac
2985     ;;
2986   esac
2987
2988   case "$ac_arg" in
2989     --cache-file=/dev/null | \
2990     -cache-file=/dev/null )
2991       # Handled here to avoid the test to skip args below.
2992       baseargs="$baseargs '$ac_arg'"
2993       tbaseargs="$tbaseargs '$ac_arg'"
2994       # Assert: $separate_arg should always be no.
2995       keep_next=$separate_arg
2996       ;;
2997     --no*)
2998       continue
2999       ;;
3000     --c* | \
3001     --sr* | \
3002     --ho* | \
3003     --bu* | \
3004     --t* | \
3005     --program-* | \
3006     -cache_file* | \
3007     -srcdir* | \
3008     -host* | \
3009     -build* | \
3010     -target* | \
3011     -program-prefix* | \
3012     -program-suffix* | \
3013     -program-transform-name* )
3014       skip_next=$separate_arg
3015       continue
3016       ;;
3017     -*)
3018       # An option.  Add it.
3019       case $ac_arg in
3020         *\'*)
3021           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3022       esac
3023       baseargs="$baseargs '$ac_arg'"
3024       if test X"$skip_targ" = Xno; then
3025         tbaseargs="$tbaseargs '$ac_arg'"
3026       fi
3027       keep_next=$separate_arg
3028       ;;
3029     *)
3030       # Either a variable assignment, or a nonopt (triplet).  Don't
3031       # pass it down; let the Makefile handle this.
3032       continue
3033       ;;
3034   esac
3035 done
3036 # Remove the initial space we just introduced and, as these will be
3037 # expanded by make, quote '$'.
3038 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3039
3040 # Add in --program-transform-name, after --program-prefix and
3041 # --program-suffix have been applied to it.  Autoconf has already
3042 # doubled dollar signs and backslashes in program_transform_name; we want
3043 # the backslashes un-doubled, and then the entire thing wrapped in single
3044 # quotes, because this will be expanded first by make and then by the shell.
3045 # Also, because we want to override the logic in subdir configure scripts to
3046 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3047 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3048 ${program_transform_name}
3049 EOF_SED
3050 gcc_transform_name=`cat conftestsed.out`
3051 rm -f conftestsed.out
3052 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3053 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3054 if test "$silent" = yes; then
3055   baseargs="$baseargs --silent"
3056   tbaseargs="$tbaseargs --silent"
3057 fi
3058 baseargs="$baseargs --disable-option-checking"
3059 tbaseargs="$tbaseargs --disable-option-checking"
3060
3061 # Record and document user additions to sub configure arguments.
3062 AC_ARG_VAR([build_configargs],
3063            [additional configure arguments for build directories])
3064 AC_ARG_VAR([host_configargs],
3065            [additional configure arguments for host directories])
3066 AC_ARG_VAR([target_configargs],
3067            [additional configure arguments for target directories])
3068
3069 # For the build-side libraries, we just need to pretend we're native,
3070 # and not use the same cache file.  Multilibs are neither needed nor
3071 # desired.  We can't even use the same cache file for all build-side
3072 # libraries, as they're compiled differently; some with C, some with
3073 # C++ or with different feature-enabling options.
3074 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3075
3076 # For host modules, accept cache file option, or specification as blank.
3077 case "${cache_file}" in
3078 "") # empty
3079   cache_file_option="" ;;
3080 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3081   cache_file_option="--cache-file=${cache_file}" ;;
3082 *) # relative path
3083   cache_file_option="--cache-file=../${cache_file}" ;;
3084 esac
3085
3086 # Host dirs don't like to share a cache file either, horribly enough.
3087 # This seems to be due to autoconf 2.5x stupidity.
3088 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3089
3090 target_configargs="$target_configargs ${tbaseargs}"
3091
3092 # Passing a --with-cross-host argument lets the target libraries know
3093 # whether they are being built with a cross-compiler or being built
3094 # native.  However, it would be better to use other mechanisms to make the
3095 # sorts of decisions they want to make on this basis.  Please consider
3096 # this option to be deprecated.  FIXME.
3097 if test x${is_cross_compiler} = xyes ; then
3098   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3099 fi
3100
3101 # Special user-friendly check for native x86_64-linux build, if
3102 # multilib is not explicitly enabled.
3103 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3104   x86_64-*linux*:yes:$build:$build:)
3105     # Make sure we have a development environment that handles 32-bit
3106     dev64=no
3107     echo "int main () { return 0; }" > conftest.c
3108     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3109     if test $? = 0 ; then
3110       if test -s conftest || test -s conftest.exe ; then
3111         dev64=yes
3112       fi
3113     fi
3114     rm -f conftest*
3115     if test x${dev64} != xyes ; then
3116       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.])
3117     fi
3118     ;;
3119 esac
3120
3121 # Default to --enable-multilib.
3122 if test x${enable_multilib} = x ; then
3123   target_configargs="--enable-multilib ${target_configargs}"
3124 fi
3125
3126 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3127 # changed from the earlier setting of with_newlib.
3128 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3129   target_configargs="--with-newlib ${target_configargs}"
3130 fi
3131
3132 # Different target subdirs use different values of certain variables
3133 # (notably CXX).  Worse, multilibs use *lots* of different values.
3134 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3135 # it doesn't automatically accept command-line overrides of them.
3136 # This means it's not safe for target subdirs to share a cache file,
3137 # which is disgusting, but there you have it.  Hopefully this can be
3138 # fixed in future.  It's still worthwhile to use a cache file for each
3139 # directory.  I think.
3140
3141 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3142 # We need to pass --target, as newer autoconf's requires consistency
3143 # for target_alias and gcc doesn't manage it consistently.
3144 target_configargs="--cache-file=./config.cache ${target_configargs}"
3145
3146 FLAGS_FOR_TARGET=
3147 case " $target_configdirs " in
3148  *" newlib "*)
3149   case " $target_configargs " in
3150   *" --with-newlib "*)
3151    case "$target" in
3152     *-cygwin*)
3153       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3154       ;;
3155    esac
3156
3157    # If we're not building GCC, don't discard standard headers.
3158    if test -d ${srcdir}/gcc; then
3159      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3160
3161      if test "${build}" != "${host}"; then
3162        # On Canadian crosses, CC_FOR_TARGET will have already been set
3163        # by `configure', so we won't have an opportunity to add -Bgcc/
3164        # to it.  This is right: we don't want to search that directory
3165        # for binaries, but we want the header files in there, so add
3166        # them explicitly.
3167        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3168
3169        # Someone might think of using the pre-installed headers on
3170        # Canadian crosses, in case the installed compiler is not fully
3171        # compatible with the compiler being built.  In this case, it
3172        # would be better to flag an error than risking having
3173        # incompatible object files being constructed.  We can't
3174        # guarantee that an error will be flagged, but let's hope the
3175        # compiler will do it, when presented with incompatible header
3176        # files.
3177      fi
3178    fi
3179
3180    case "${target}-${is_cross_compiler}" in
3181    i[[3456789]]86-*-linux*-no)
3182       # Here host == target, so we don't need to build gcc,
3183       # so we don't want to discard standard headers.
3184       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3185       ;;
3186    *)
3187       # If we're building newlib, use its generic headers last, but search
3188       # for any libc-related directories first (so make it the last -B
3189       # switch).
3190       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3191
3192       # If we're building libgloss, find the startup file, simulator library
3193       # and linker script.
3194       case " $target_configdirs " in
3195         *" libgloss "*)
3196         # Look for startup file, simulator library and maybe linker script.
3197         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3198         # Look for libnosys.a in case the target needs it.
3199         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3200         # Most targets have the linker script in the source directory.
3201         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3202         ;;
3203       esac
3204       ;;
3205    esac
3206    ;;
3207   esac
3208   ;;
3209 esac
3210
3211 case "$target" in
3212   x86_64-*mingw* | *-w64-mingw*)
3213   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3214   # however, use a symlink named 'mingw' in ${prefix} .
3215     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3216     ;;
3217   *-mingw*)
3218   # MinGW can't be handled as Cygwin above since it does not use newlib.
3219     FLAGS_FOR_TARGET=$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'
3220     ;;
3221 esac
3222
3223 # Allow the user to override the flags for
3224 # our build compiler if desired.
3225 if test x"${build}" = x"${host}" ; then
3226   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3227   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3228   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3229 fi
3230
3231 # On Canadian crosses, we'll be searching the right directories for
3232 # the previously-installed cross compiler, so don't bother to add
3233 # flags for directories within the install tree of the compiler
3234 # being built; programs in there won't even run.
3235 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3236   # Search for pre-installed headers if nothing else fits.
3237   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3238 fi
3239
3240 if test "x${use_gnu_ld}" = x &&
3241    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3242   # Arrange for us to find uninstalled linker scripts.
3243   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3244 fi
3245
3246 # Search for other target-specific linker scripts and such.
3247 case "${target}" in
3248   mep*)
3249     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3250     ;;
3251 esac
3252
3253 # Makefile fragments.
3254 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3255 do
3256   eval fragval=\$$frag
3257   if test $fragval != /dev/null; then
3258     eval $frag=${srcdir}/$fragval
3259   fi
3260 done
3261 AC_SUBST_FILE(host_makefile_frag)
3262 AC_SUBST_FILE(target_makefile_frag)
3263 AC_SUBST_FILE(alphaieee_frag)
3264 AC_SUBST_FILE(ospace_frag)
3265
3266 # Miscellanea: directories, flags, etc.
3267 AC_SUBST(RPATH_ENVVAR)
3268 AC_SUBST(GCC_SHLIB_SUBDIR)
3269 AC_SUBST(tooldir)
3270 AC_SUBST(build_tooldir)
3271 AC_SUBST(CONFIGURE_GDB_TK)
3272 AC_SUBST(GDB_TK)
3273 AC_SUBST(INSTALL_GDB_TK)
3274
3275 # Build module lists & subconfigure args.
3276 AC_SUBST(build_configargs)
3277 AC_SUBST(build_configdirs)
3278
3279 # Host module lists & subconfigure args.
3280 AC_SUBST(host_configargs)
3281 AC_SUBST(configdirs)
3282 AC_SUBST(target_configdirs)
3283
3284 # Target module lists & subconfigure args.
3285 AC_SUBST(target_configargs)
3286
3287
3288 # Build tools.
3289 AC_SUBST(AR_FOR_BUILD)
3290 AC_SUBST(AS_FOR_BUILD)
3291 AC_SUBST(CC_FOR_BUILD)
3292 AC_SUBST(CFLAGS_FOR_BUILD)
3293 AC_SUBST(CXXFLAGS_FOR_BUILD)
3294 AC_SUBST(CXX_FOR_BUILD)
3295 AC_SUBST(DLLTOOL_FOR_BUILD)
3296 AC_SUBST(GCJ_FOR_BUILD)
3297 AC_SUBST(GFORTRAN_FOR_BUILD)
3298 AC_SUBST(GOC_FOR_BUILD)
3299 AC_SUBST(LDFLAGS_FOR_BUILD)
3300 AC_SUBST(LD_FOR_BUILD)
3301 AC_SUBST(NM_FOR_BUILD)
3302 AC_SUBST(RANLIB_FOR_BUILD)
3303 AC_SUBST(WINDMC_FOR_BUILD)
3304 AC_SUBST(WINDRES_FOR_BUILD)
3305
3306 # Generate default definitions for YACC, M4, LEX and other programs that run
3307 # on the build machine.  These are used if the Makefile can't locate these
3308 # programs in objdir.
3309 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3310
3311 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3312 case " $build_configdirs " in
3313   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3314 esac
3315
3316 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3317 case " $build_configdirs " in
3318   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3319 esac
3320
3321 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3322 case " $build_configdirs " in
3323   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3324 esac
3325
3326 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3327 case " $build_configdirs " in
3328   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3329   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3330 esac
3331
3332 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3333 case " $build_configdirs " in
3334   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3335 esac
3336
3337 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3338 case " $build_configdirs " in
3339   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3340   *)
3341 changequote(,)
3342     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3343     # higher, else we use the "missing" dummy.
3344     if ${MAKEINFO} --version \
3345        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3346       :
3347     else
3348       MAKEINFO="$MISSING makeinfo"
3349     fi
3350     ;;
3351 changequote([,])
3352 esac
3353
3354 # FIXME: expect and dejagnu may become build tools?
3355
3356 AC_CHECK_PROGS(EXPECT, expect, expect)
3357 case " $configdirs " in
3358   *" expect "*)
3359     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3360     ;;
3361 esac
3362
3363 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3364 case " $configdirs " in
3365   *" dejagnu "*)
3366     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3367     ;;
3368 esac
3369
3370
3371 # Host tools.
3372 NCN_STRICT_CHECK_TOOLS(AR, ar)
3373 NCN_STRICT_CHECK_TOOLS(AS, as)
3374 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3375 NCN_STRICT_CHECK_TOOLS(LD, ld)
3376 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3377 NCN_STRICT_CHECK_TOOLS(NM, nm)
3378 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3379 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3380 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3381 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3382 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3383 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3384 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3385 AC_SUBST(CC)
3386 AC_SUBST(CXX)
3387 AC_SUBST(CFLAGS)
3388 AC_SUBST(CXXFLAGS)
3389
3390 # Target tools.
3391 AC_ARG_WITH([build-time-tools],
3392   [AS_HELP_STRING([--with-build-time-tools=PATH],
3393                   [use given path to find target tools during the build])],
3394   [case x"$withval" in
3395      x/*) ;;
3396      *)
3397        with_build_time_tools=
3398        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3399        ;;
3400    esac],
3401   [with_build_time_tools=])
3402
3403 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3404 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3405 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3406 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3407 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3408 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3409
3410 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3411 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3412 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3413 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3414 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3415 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3416 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3417 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3418 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3419 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3420 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3421 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3422 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3423
3424 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3425
3426 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3427 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3428 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3429 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3430 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3431                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3432                 c++)
3433 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3434                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3435                 c++)
3436 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3437 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3438 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3439                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3440 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3441                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3442 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3443                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3444 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3445 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3446 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3447 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3448 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3449 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3450 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3451 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3452 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3453 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3454
3455 AC_SUBST(FLAGS_FOR_TARGET)
3456 AC_SUBST(RAW_CXX_FOR_TARGET)
3457
3458 # Certain tools may need extra flags.
3459 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3460 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3461 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3462
3463 # When building target libraries, except in a Canadian cross, we use
3464 # the same toolchain as the compiler we just built.
3465 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3466 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3467 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3468 if test $host = $build; then
3469   case " $configdirs " in
3470     *" gcc "*)
3471       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3472       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3473       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3474       ;;
3475   esac
3476 fi
3477
3478 AC_SUBST(COMPILER_AS_FOR_TARGET)
3479 AC_SUBST(COMPILER_LD_FOR_TARGET)
3480 AC_SUBST(COMPILER_NM_FOR_TARGET)
3481
3482 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3483 AC_ARG_ENABLE(maintainer-mode,
3484 [AS_HELP_STRING([--enable-maintainer-mode],
3485                 [enable make rules and dependencies not useful
3486                  (and sometimes confusing) to the casual installer])],
3487       USE_MAINTAINER_MODE=$enableval,
3488       USE_MAINTAINER_MODE=no)
3489 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3490 AC_SUBST(MAINTAINER_MODE_TRUE)
3491 AC_SUBST(MAINTAINER_MODE_FALSE)
3492 if test "$USE_MAINTAINER_MODE" = yes; then
3493   MAINTAINER_MODE_TRUE=
3494   MAINTAINER_MODE_FALSE='#'
3495 else
3496   MAINTAINER_MODE_TRUE='#'
3497   MAINTAINER_MODE_FALSE=
3498 fi
3499 MAINT=$MAINTAINER_MODE_TRUE
3500 AC_SUBST(MAINT)dnl
3501
3502 # ---------------------
3503 # GCC bootstrap support
3504 # ---------------------
3505
3506 # Stage specific cflags for build.
3507 stage1_cflags="-g"
3508 case $build in
3509   vax-*-*)
3510     case ${GCC} in
3511       yes) stage1_cflags="-g -Wa,-J" ;;
3512       *) stage1_cflags="-g -J" ;;
3513     esac ;;
3514 esac
3515
3516 AC_SUBST(stage1_cflags)
3517
3518 # Enable --enable-checking in stage1 of the compiler.
3519 AC_ARG_ENABLE(stage1-checking,
3520 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3521                 [choose additional checking for stage1 of the compiler])],
3522 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3523 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3524   # For --disable-checking or implicit --enable-checking=release, avoid
3525   # setting --enable-checking=gc in the default stage1 checking for LTO
3526   # bootstraps.  See PR62077.
3527   stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types
3528   case $BUILD_CONFIG in
3529     *lto*)
3530       if test "x$enable_checking" = x && \
3531          test -d ${srcdir}/gcc && \
3532          test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3533         stage1_checking=--enable-checking=yes,types
3534       fi;;
3535     *) stage1_checking=--enable-checking=yes,types;;
3536   esac
3537 else
3538   stage1_checking=--enable-checking=$enable_checking,types
3539 fi])
3540 AC_SUBST(stage1_checking)
3541
3542 # Enable -Werror in bootstrap stage2 and later.
3543 AC_ARG_ENABLE(werror,
3544 [AS_HELP_STRING([--enable-werror],
3545                 [enable -Werror in bootstrap stage2 and later])], [],
3546 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3547   enable_werror=yes
3548 else
3549   enable_werror=no
3550 fi])
3551 case ${enable_werror} in
3552   yes) stage2_werror_flag="--enable-werror-always" ;;
3553   *) stage2_werror_flag="" ;;
3554 esac
3555 AC_SUBST(stage2_werror_flag)
3556
3557 # Enable --enable-host-shared.
3558 AC_ARG_ENABLE(host-shared,
3559 [AS_HELP_STRING([--enable-host-shared],
3560                 [build host code as shared libraries])],
3561 [host_shared=$enableval], [host_shared=no])
3562 AC_SUBST(host_shared)
3563
3564 # PR jit/64780: Require the user to explicitly specify
3565 # --enable-host-shared if the jit is enabled, hinting
3566 # that they might want to do a separate configure/build of
3567 # the jit, to avoid users from slowing down the rest of the
3568 # compiler by enabling the jit.
3569 if test ${host_shared} = "no" ; then
3570   case "${enable_languages}" in
3571     *jit*)
3572       AC_MSG_ERROR([
3573 Enabling language "jit" requires --enable-host-shared.
3574
3575 --enable-host-shared typically slows the rest of the compiler down by
3576 a few %, so you must explicitly enable it.
3577
3578 If you want to build both the jit and the regular compiler, it is often
3579 best to do this via two separate configure/builds, in separate
3580 directories, to avoid imposing the performance cost of
3581 --enable-host-shared on the regular compiler.])
3582       ;;
3583     *)
3584       ;;
3585   esac
3586 fi
3587
3588 # Specify what files to not compare during bootstrap.
3589
3590 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3591 case "$target" in
3592   hppa*64*-*-hpux*) ;;
3593   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3594   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3595 esac
3596 AC_SUBST(compare_exclusions)
3597
3598 AC_CONFIG_FILES([Makefile],
3599   [sed "$extrasub_build" Makefile |
3600    sed "$extrasub_host" |
3601    sed "$extrasub_target" > mf$$
3602    mv -f mf$$ Makefile],
3603   [extrasub_build="$extrasub_build"
3604    extrasub_host="$extrasub_host"
3605    extrasub_target="$extrasub_target"])
3606 AC_OUTPUT