configure.ac

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