configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
   3 #   2014, 2015, 2016, 2017 Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32
  33 AC_INIT(move-if-change)
  34 AC_PREREQ(2.64)
  35 AC_DISABLE_OPTION_CHECKING
  36
  37 progname=$0
  38 # if PWD already has a value, it is probably wrong.
  39 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  40
  41 # Export original configure arguments for use by sub-configures.
  42 # Quote arguments with shell meta charatcers.
  43 TOPLEVEL_CONFIGURE_ARGUMENTS=
  44 set -- "$progname" "$@"
  45 for ac_arg
  46 do
  47   case "$ac_arg" in
  48   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  49     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  50     # if the argument is of the form -foo=baz, quote the baz part only
  51     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  52   *) ;;
  53   esac
  54   # Add the quoted argument to the list.
  55   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  56 done
  57 if test "$silent" = yes; then
  58   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  59 fi
  60 # Remove the initial space we just introduced and, as these will be
  61 # expanded by make, quote '$'.
  62 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  63 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  64
  65 # Find the build, host, and target systems.
  66 ACX_NONCANONICAL_BUILD
  67 ACX_NONCANONICAL_HOST
  68 ACX_NONCANONICAL_TARGET
  69
  70 dnl Autoconf 2.5x and later will set a default program prefix if
  71 dnl --target was used, even if it was the same as --host.  Disable
  72 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  73 dnl to take effect.
  74 test "$host_noncanonical" = "$target_noncanonical" &&
  75   test "$program_prefix$program_suffix$program_transform_name" = \
  76     NONENONEs,x,x, &&
  77   program_transform_name=s,y,y,
  78
  79 AC_CANONICAL_SYSTEM
  80 AC_ARG_PROGRAM
  81
  82 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  83 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  84
  85 # Get 'install' or 'install-sh' and its variants.
  86 AC_PROG_INSTALL
  87 ACX_PROG_LN
  88 AC_PROG_LN_S
  89 AC_PROG_SED
  90 AC_PROG_AWK
  91
  92 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  93
  94 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  95 # a relative path.
  96 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  97   INSTALL="${srcpwd}/install-sh -c"
  98 fi
  99
 100 # Set srcdir to "." if that's what it is.
 101 # This is important for multilib support.
 102 pwd=`${PWDCMD-pwd}`
 103 if test "${pwd}" = "${srcpwd}" ; then
 104   srcdir=.
 105 fi
 106
 107 topsrcdir=$srcpwd
 108
 109 extra_host_args=
 110
 111 ### To add a new directory to the tree, first choose whether it is a target
 112 ### or a host dependent tool.  Then put it into the appropriate list
 113 ### (library or tools, host or target), doing a dependency sort.
 114
 115 # Subdirs will be configured in the order listed in build_configdirs,
 116 # configdirs, or target_configdirs; see the serialization section below.
 117
 118 # Dependency sorting is only needed when *configuration* must be done in
 119 # a particular order.  In all cases a dependency should be specified in
 120 # the Makefile, whether or not it's implicitly specified here.
 121
 122 # Double entries in build_configdirs, configdirs, or target_configdirs may
 123 # cause circular dependencies and break everything horribly.
 124
 125 # these library is used by various programs built for the build
 126 # environment
 127 #
 128 build_libs="build-libiberty build-libcpp"
 129
 130 # these tools are built for the build environment
 131 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
 132
 133 # these libraries are used by various programs built for the host environment
 134 #f
 135 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv"
 136
 137 # these tools are built for the host environment
 138 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 139 # know that we are building the simulator.
 140 # binutils, gas and ld appear in that order because it makes sense to run
 141 # "make check" in that particular order.
 142 # If --enable-gold is used, "gold" may replace "ld".
 143 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
 144
 145 # these libraries are built for the target environment, and are built after
 146 # the host libraries and the host tools (which may be a cross compiler)
 147 # Note that libiberty is not a target library.
 148 target_libraries="target-libgcc \
 149                 target-libbacktrace \
 150                 target-libgloss \
 151                 target-newlib \
 152                 target-libgomp \
 153                 target-libcilkrts \
 154                 target-liboffloadmic \
 155                 target-libatomic \
 156                 target-libitm \
 157                 target-libstdc++-v3 \
 158                 target-libsanitizer \
 159                 target-libvtv \
 160                 target-libmpx \
 161                 target-libssp \
 162                 target-libquadmath \
 163                 target-libgfortran \
 164                 target-libffi \
 165                 target-libobjc \
 166                 target-libada \
 167                 target-libgo"
 168
 169 # these tools are built using the target libraries, and are intended to
 170 # run only in the target environment
 171 #
 172 # note: any program that *uses* libraries that are in the "target_libraries"
 173 # list belongs in this list.
 174 #
 175 target_tools="target-rda"
 176
 177 ################################################################################
 178
 179 ## All tools belong in one of the four categories, and are assigned above
 180 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 181 ## is important because configure will choke if they ever get through.
 182 ## ${configdirs} is directories we build using the host tools.
 183 ## ${target_configdirs} is directories we build using the target tools.
 184 configdirs=`echo ${host_libs} ${host_tools}`
 185 target_configdirs=`echo ${target_libraries} ${target_tools}`
 186 build_configdirs=`echo ${build_libs} ${build_tools}`
 187
 188 m4_divert_text([PARSE_ARGS],
 189 [case $srcdir in
 190   *" "*)
 191 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 192     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 193 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 194     ;;
 195 esac
 196 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 197 ])
 198
 199 ################################################################################
 200
 201 srcname="gnu development package"
 202
 203 # This gets set non-empty for some net releases of packages.
 204 appdirs=""
 205
 206 # Define is_cross_compiler to save on calls to 'test'.
 207 is_cross_compiler=
 208 if test x"${host}" = x"${target}" ; then
 209   is_cross_compiler=no
 210 else
 211   is_cross_compiler=yes
 212 fi
 213
 214 # Find the build and target subdir names.
 215 GCC_TOPLEV_SUBDIRS
 216 # Be sure to cover against remnants of an in-tree build.
 217 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 218   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 219 Use a pristine source tree when building in a separate tree])
 220 fi
 221
 222 # Skipdirs are removed silently.
 223 skipdirs=
 224 # Noconfigdirs are removed loudly.
 225 noconfigdirs=""
 226
 227 use_gnu_ld=
 228 # Make sure we don't let GNU ld be added if we didn't want it.
 229 if test x$with_gnu_ld = xno ; then
 230   use_gnu_ld=no
 231   noconfigdirs="$noconfigdirs ld gold"
 232 fi
 233
 234 use_gnu_as=
 235 # Make sure we don't let GNU as be added if we didn't want it.
 236 if test x$with_gnu_as = xno ; then
 237   use_gnu_as=no
 238   noconfigdirs="$noconfigdirs gas"
 239 fi
 240
 241 use_included_zlib=
 242 AC_ARG_WITH(system-zlib,
 243 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 244 # Make sure we don't let ZLIB be added if we didn't want it.
 245 if test x$with_system_zlib = xyes ; then
 246   use_included_zlib=no
 247   noconfigdirs="$noconfigdirs zlib"
 248 fi
 249
 250 # some tools are so dependent upon X11 that if we're not building with X,
 251 # it's not even worth trying to configure, much less build, that tool.
 252
 253 case ${with_x} in
 254   yes | "") ;; # the default value for this tree is that X11 is available
 255   no)
 256     skipdirs="${skipdirs} tk itcl libgui"
 257     # We won't be able to build gdbtk without X.
 258     enable_gdbtk=no
 259     ;;
 260   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 261 esac
 262
 263 # Some are only suitable for cross toolchains.
 264 # Remove these if host=target.
 265 cross_only="target-libgloss target-newlib target-opcodes"
 266
 267 case $is_cross_compiler in
 268   no) skipdirs="${skipdirs} ${cross_only}" ;;
 269 esac
 270
 271 # If both --with-headers and --with-libs are specified, default to
 272 # --without-newlib.
 273 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 274    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 275   if test x"${with_newlib}" = x ; then
 276     with_newlib=no
 277   fi
 278 fi
 279
 280 # Recognize --with-newlib/--without-newlib.
 281 case ${with_newlib} in
 282   no) skipdirs="${skipdirs} target-newlib" ;;
 283   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 284 esac
 285
 286 AC_ARG_ENABLE(as-accelerator-for,
 287 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 288                 [build as offload target compiler.
 289                 Specify offload host triple by ARG])])
 290
 291 AC_ARG_ENABLE(offload-targets,
 292 [AS_HELP_STRING([--enable-offload-targets=LIST],
 293                 [enable offloading to devices from comma-separated LIST of
 294                 TARGET[=DIR]. Use optional path to find offload target compiler
 295                 during the build])],
 296 [
 297   if test x"$enable_offload_targets" = x; then
 298     AC_MSG_ERROR([no offload targets specified])
 299   fi
 300 ], [enable_offload_targets=])
 301
 302 # Handle --enable-gold, --enable-ld.
 303 # --disable-gold [--enable-ld]
 304 #     Build only ld.  Default option.
 305 # --enable-gold [--enable-ld]
 306 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 307 #     as "ld.bfd" and "ld".
 308 # --enable-gold=default [--enable-ld]
 309 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 310 #     install ld as "ld.bfd".
 311 # --enable-gold[=default] --disable-ld
 312 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 313 # --enable-gold --enable-ld=default
 314 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 315 #     and ld.bfd).
 316 #     In other words, ld is default
 317 # --enable-gold=default --enable-ld=default
 318 #     Error.
 319
 320 default_ld=
 321 AC_ARG_ENABLE(gold,
 322 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 323                 [build gold @<:@ARG={default,yes,no}@:>@])],
 324 ENABLE_GOLD=$enableval,
 325 ENABLE_GOLD=no)
 326 case "${ENABLE_GOLD}" in
 327   yes|default)
 328     # Check for ELF target.
 329     is_elf=no
 330     case "${target}" in
 331       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 332       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 333       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 334       | *-*-solaris2* | *-*-nto* | *-*-nacl* | *-*-fuchsia*)
 335         case "${target}" in
 336           *-*-linux*aout* | *-*-linux*oldld*)
 337             ;;
 338           *)
 339             is_elf=yes
 340             ;;
 341         esac
 342     esac
 343
 344     if test "$is_elf" = "yes"; then
 345       # Check for target supported by gold.
 346       case "${target}" in
 347         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 348         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 349           configdirs="$configdirs gold"
 350           if test x${ENABLE_GOLD} = xdefault; then
 351             default_ld=gold
 352           fi
 353           ENABLE_GOLD=yes
 354           ;;
 355       esac
 356     fi
 357     ;;
 358   no)
 359     ;;
 360   *)
 361     AC_MSG_ERROR([invalid --enable-gold argument])
 362     ;;
 363 esac
 364
 365 AC_ARG_ENABLE(ld,
 366 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 367                 [build ld @<:@ARG={default,yes,no}@:>@])],
 368 ENABLE_LD=$enableval,
 369 ENABLE_LD=yes)
 370
 371 case "${ENABLE_LD}" in
 372   default)
 373     if test x${default_ld} != x; then
 374       AC_MSG_ERROR([either gold or ld can be the default ld])
 375     fi
 376     ;;
 377   yes)
 378     ;;
 379   no)
 380     if test x${ENABLE_GOLD} != xyes; then
 381       AC_MSG_WARN([neither ld nor gold are enabled])
 382     fi
 383     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 384     ;;
 385   *)
 386     AC_MSG_ERROR([invalid --enable-ld argument])
 387     ;;
 388 esac
 389
 390 # PR gas/19109
 391 # Decide the default method for compressing debug sections.
 392 # Provide a configure time option to override our default.
 393 AC_ARG_ENABLE(compressed_debug_sections,
 394 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 395                 [Enable compressed debug sections for gas, gold or ld by
 396                  default])],
 397 [
 398   if test x"$enable_compressed_debug_sections" = xyes; then
 399     AC_MSG_ERROR([no program with compressed debug sections specified])
 400   fi
 401 ], [enable_compressed_debug_sections=])
 402
 403 # Configure extra directories which are host specific
 404
 405 case "${host}" in
 406   *-cygwin*)
 407     configdirs="$configdirs libtermcap" ;;
 408 esac
 409
 410 # A target can indicate whether a language isn't supported for some reason.
 411 # Only spaces may be used in this macro; not newlines or tabs.
 412 unsupported_languages=
 413
 414 # Remove more programs from consideration, based on the host or
 415 # target this usually means that a port of the program doesn't
 416 # exist yet.
 417
 418 case "${host}" in
 419   i[[3456789]]86-*-msdosdjgpp*)
 420     noconfigdirs="$noconfigdirs tcl tk itcl"
 421     ;;
 422 esac
 423
 424
 425 AC_ARG_ENABLE(libquadmath,
 426 AS_HELP_STRING([--disable-libquadmath],
 427   [do not build libquadmath directory]),
 428 ENABLE_LIBQUADMATH=$enableval,
 429 ENABLE_LIBQUADMATH=yes)
 430 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 431   noconfigdirs="$noconfigdirs target-libquadmath"
 432 fi
 433
 434
 435 AC_ARG_ENABLE(libquadmath-support,
 436 AS_HELP_STRING([--disable-libquadmath-support],
 437   [disable libquadmath support for Fortran]),
 438 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 439 ENABLE_LIBQUADMATH_SUPPORT=yes)
 440 enable_libquadmath_support=
 441 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 442   enable_libquadmath_support=no
 443 fi
 444
 445
 446 AC_ARG_ENABLE(libada,
 447 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 448 ENABLE_LIBADA=$enableval,
 449 ENABLE_LIBADA=yes)
 450 if test "${ENABLE_LIBADA}" != "yes" ; then
 451   noconfigdirs="$noconfigdirs gnattools"
 452 fi
 453
 454 AC_ARG_ENABLE(libssp,
 455 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 456 ENABLE_LIBSSP=$enableval,
 457 ENABLE_LIBSSP=yes)
 458
 459 AC_ARG_ENABLE(libstdcxx,
 460 AS_HELP_STRING([--disable-libstdcxx],
 461   [do not build libstdc++-v3 directory]),
 462 ENABLE_LIBSTDCXX=$enableval,
 463 ENABLE_LIBSTDCXX=default)
 464 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 465   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 466 fi]
 467
 468 # If this is accelerator compiler and its target is intelmic we enable
 469 # target liboffloadmic by default.  If this is compiler with offloading
 470 # for intelmic we enable host liboffloadmic by default.  Otherwise
 471 # liboffloadmic is disabled by default.
 472 AC_ARG_ENABLE([liboffloadmic],
 473 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 474                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 475 [case "$enableval" in
 476   no | host | target)
 477     enable_liboffloadmic=$enableval ;;
 478   *)
 479     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 480 esac],
 481 [if test x"$enable_as_accelerator_for" != x; then
 482   case "${target}" in
 483     *-intelmic-* | *-intelmicemul-*)
 484       enable_liboffloadmic=target
 485       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 486       ;;
 487     *)
 488       enable_liboffloadmic=no
 489       ;;
 490   esac
 491 else
 492   case "${enable_offload_targets}" in
 493     *-intelmic-* | *-intelmicemul-*)
 494       enable_liboffloadmic=host
 495       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 496       ;;
 497     *)
 498       enable_liboffloadmic=no
 499       ;;
 500     esac
 501 fi])
 502 AC_SUBST(extra_liboffloadmic_configure_flags)
 503
 504 # Enable libgomp by default on hosted POSIX systems, and a few others.
 505 if test x$enable_libgomp = x ; then
 506     case "${target}" in
 507     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 508         ;;
 509     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 510         ;;
 511     *-*-solaris2* | *-*-hpux11*)
 512         ;;
 513     *-*-darwin* | *-*-aix*)
 514         ;;
 515     nvptx*-*-*)
 516         ;;
 517     *)
 518         noconfigdirs="$noconfigdirs target-libgomp"
 519         ;;
 520     esac
 521 fi
 522
 523 # Disable libatomic on unsupported systems.
 524 if test -d ${srcdir}/libatomic; then
 525     if test x$enable_libatomic = x; then
 526         AC_MSG_CHECKING([for libatomic support])
 527         if (srcdir=${srcdir}/libatomic; \
 528                 . ${srcdir}/configure.tgt; \
 529                 test -n "$UNSUPPORTED")
 530         then
 531             AC_MSG_RESULT([no])
 532             noconfigdirs="$noconfigdirs target-libatomic"
 533         else
 534             AC_MSG_RESULT([yes])
 535         fi
 536     fi
 537 fi
 538
 539 # Disable libcilkrts on unsupported systems.
 540 if test -d ${srcdir}/libcilkrts; then
 541     if test x$enable_libcilkrts = x; then
 542         AC_MSG_CHECKING([for libcilkrts support])
 543         if (srcdir=${srcdir}/libcilkrts; \
 544                 . ${srcdir}/configure.tgt; \
 545                 test -n "$UNSUPPORTED")
 546         then
 547             AC_MSG_RESULT([no])
 548             noconfigdirs="$noconfigdirs target-libcilkrts"
 549         else
 550             AC_MSG_RESULT([yes])
 551         fi
 552     fi
 553 fi
 554
 555 # Disable liboffloadmic on unsupported systems.
 556 if test -d ${srcdir}/liboffloadmic; then
 557     if test x$enable_liboffloadmic != xno; then
 558         AC_MSG_CHECKING([for liboffloadmic support])
 559         if (srcdir=${srcdir}/liboffloadmic; \
 560                 . ${srcdir}/configure.tgt; \
 561                 test -n "$UNSUPPORTED")
 562         then
 563             AC_MSG_RESULT([no])
 564             noconfigdirs="$noconfigdirs target-liboffloadmic"
 565         else
 566             AC_MSG_RESULT([yes])
 567         fi
 568     fi
 569 fi
 570
 571 # Disable libitm on unsupported systems.
 572 if test -d ${srcdir}/libitm; then
 573     if test x$enable_libitm = x; then
 574         AC_MSG_CHECKING([for libitm support])
 575         if (srcdir=${srcdir}/libitm; \
 576                 . ${srcdir}/configure.tgt; \
 577                 test -n "$UNSUPPORTED")
 578         then
 579             AC_MSG_RESULT([no])
 580             noconfigdirs="$noconfigdirs target-libitm"
 581         else
 582             AC_MSG_RESULT([yes])
 583         fi
 584     fi
 585 fi
 586
 587 # Disable libsanitizer on unsupported systems.
 588 if test -d ${srcdir}/libsanitizer; then
 589     if test x$enable_libsanitizer = x; then
 590         AC_MSG_CHECKING([for libsanitizer support])
 591         if (srcdir=${srcdir}/libsanitizer; \
 592                 . ${srcdir}/configure.tgt; \
 593                 test -n "$UNSUPPORTED")
 594         then
 595             AC_MSG_RESULT([no])
 596             noconfigdirs="$noconfigdirs target-libsanitizer"
 597         else
 598             AC_MSG_RESULT([yes])
 599         fi
 600     fi
 601 fi
 602
 603 # Disable libvtv on unsupported systems.
 604 if test -d ${srcdir}/libvtv; then
 605     if test x$enable_libvtv = x; then
 606         AC_MSG_CHECKING([for libvtv support])
 607         if (srcdir=${srcdir}/libvtv; \
 608                 . ${srcdir}/configure.tgt; \
 609                 test "$VTV_SUPPORTED" != "yes")
 610         then
 611             AC_MSG_RESULT([no])
 612             noconfigdirs="$noconfigdirs target-libvtv"
 613         else
 614             AC_MSG_RESULT([yes])
 615         fi
 616     fi
 617 fi
 618
 619
 620 # Enable libmpx on supported systems by request.
 621 if test -d ${srcdir}/libmpx; then
 622     if test x$enable_libmpx = x; then
 623        AC_MSG_CHECKING([for libmpx support])
 624        if (srcdir=${srcdir}/libmpx; \
 625                . ${srcdir}/configure.tgt; \
 626                test "$LIBMPX_SUPPORTED" != "yes")
 627        then
 628            AC_MSG_RESULT([no])
 629            noconfigdirs="$noconfigdirs target-libmpx"
 630        else
 631            AC_MSG_RESULT([yes])
 632        fi
 633     fi
 634 fi
 635
 636
 637
 638 # Disable libquadmath for some systems.
 639 case "${target}" in
 640   avr-*-*)
 641     noconfigdirs="$noconfigdirs target-libquadmath"
 642     ;;
 643   # libquadmath is unused on AIX and libquadmath build process use of
 644   # LD_LIBRARY_PATH can break AIX bootstrap.
 645   powerpc-*-aix* | rs6000-*-aix*)
 646     noconfigdirs="$noconfigdirs target-libquadmath"
 647     ;;
 648 esac
 649
 650 # Disable libssp for some systems.
 651 case "${target}" in
 652   avr-*-*)
 653     # No hosted I/O support.
 654     noconfigdirs="$noconfigdirs target-libssp"
 655     ;;
 656   powerpc-*-aix* | rs6000-*-aix*)
 657     noconfigdirs="$noconfigdirs target-libssp"
 658     ;;
 659   rl78-*-*)
 660     # libssp uses a misaligned load to trigger a fault, but the RL78
 661     # doesn't fault for those - instead, it gives a build-time error
 662     # for explicit misaligned loads.
 663     noconfigdirs="$noconfigdirs target-libssp"
 664     ;;
 665   visium-*-*)
 666     # No hosted I/O support.
 667     noconfigdirs="$noconfigdirs target-libssp"
 668     ;;
 669 esac
 670
 671 # Disable libstdc++-v3 for some systems.
 672 # Allow user to override this if they pass --enable-libstdc++-v3
 673 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 674   case "${target}" in
 675     *-*-vxworks*)
 676       # VxWorks uses the Dinkumware C++ library.
 677       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 678       ;;
 679     arm*-wince-pe*)
 680       # the C++ libraries don't build on top of CE's C libraries
 681       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 682       ;;
 683     avr-*-*)
 684       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 685       ;;
 686     ft32-*-*)
 687       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 688       ;;
 689   esac
 690 fi
 691
 692 # Disable Fortran for some systems.
 693 case "${target}" in
 694   mmix-*-*)
 695     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 696     unsupported_languages="$unsupported_languages fortran"
 697     ;;
 698 esac
 699
 700 # Disable libffi for some systems.
 701 case "${target}" in
 702   powerpc-*-darwin*)
 703     ;;
 704   i[[3456789]]86-*-darwin*)
 705     ;;
 706   x86_64-*-darwin[[912]]*)
 707     ;;
 708   *-*-darwin*)
 709     noconfigdirs="$noconfigdirs target-libffi"
 710     ;;
 711   *-*-netware*)
 712     noconfigdirs="$noconfigdirs target-libffi"
 713     ;;
 714   *-*-phoenix*)
 715     noconfigdirs="$noconfigdirs target-libffi"
 716     ;;
 717   *-*-rtems*)
 718     noconfigdirs="$noconfigdirs target-libffi"
 719     ;;
 720   *-*-tpf*)
 721     noconfigdirs="$noconfigdirs target-libffi"
 722     ;;
 723   *-*-uclinux*)
 724     noconfigdirs="$noconfigdirs target-libffi"
 725     ;;
 726   *-*-vxworks*)
 727     noconfigdirs="$noconfigdirs target-libffi"
 728     ;;
 729   aarch64*-*-freebsd*)
 730     noconfigdirs="$noconfigdirs target-libffi"
 731     ;;
 732   alpha*-*-*vms*)
 733     noconfigdirs="$noconfigdirs target-libffi"
 734     ;;
 735   arm*-*-freebsd*)
 736     noconfigdirs="$noconfigdirs target-libffi"
 737     ;;
 738   arm-wince-pe)
 739     noconfigdirs="$noconfigdirs target-libffi"
 740     ;;
 741   arm*-*-symbianelf*)
 742     noconfigdirs="$noconfigdirs target-libffi"
 743     ;;
 744   cris-*-* | crisv32-*-*)
 745     case "${target}" in
 746       *-*-linux*)
 747         ;;
 748       *) # See PR46792 regarding target-libffi.
 749         noconfigdirs="$noconfigdirs target-libffi";;
 750     esac
 751     ;;
 752   hppa*64*-*-hpux*)
 753     noconfigdirs="$noconfigdirs target-libffi"
 754     ;;
 755   hppa*-hp-hpux11*)
 756     ;;
 757   hppa*-*-hpux*)
 758     noconfigdirs="$noconfigdirs target-libffi"
 759     ;;
 760   ia64*-*-*vms*)
 761     noconfigdirs="$noconfigdirs target-libffi"
 762     ;;
 763   i[[3456789]]86-w64-mingw*)
 764     noconfigdirs="$noconfigdirs target-libffi"
 765     ;;
 766   i[[3456789]]86-*-mingw*)
 767     noconfigdirs="$noconfigdirs target-libffi"
 768     ;;
 769   x86_64-*-mingw*)
 770     noconfigdirs="$noconfigdirs target-libffi"
 771     ;;
 772   mmix-*-*)
 773     noconfigdirs="$noconfigdirs target-libffi"
 774     ;;
 775   powerpc-*-aix*)
 776     # copied from rs6000-*-* entry
 777     noconfigdirs="$noconfigdirs target-libffi"
 778     ;;
 779   rs6000-*-aix*)
 780     noconfigdirs="$noconfigdirs target-libffi"
 781     ;;
 782   ft32-*-*)
 783     noconfigdirs="$noconfigdirs target-libffi"
 784     ;;
 785   *-*-lynxos*)
 786     noconfigdirs="$noconfigdirs target-libffi"
 787     ;;
 788 esac
 789
 790 # Disable the go frontend on systems where it is known to not work. Please keep
 791 # this in sync with contrib/config-list.mk.
 792 case "${target}" in
 793 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 794     unsupported_languages="$unsupported_languages go"
 795     ;;
 796 esac
 797
 798 # Disable libgo for some systems where it is known to not work.
 799 # For testing, you can easily override this with --enable-libgo.
 800 if test x$enable_libgo = x; then
 801     case "${target}" in
 802     *-*-darwin*)
 803         # PR 46986
 804         noconfigdirs="$noconfigdirs target-libgo"
 805         ;;
 806     *-*-cygwin* | *-*-mingw*)
 807         noconfigdirs="$noconfigdirs target-libgo"
 808         ;;
 809     *-*-aix*)
 810         noconfigdirs="$noconfigdirs target-libgo"
 811         ;;
 812     esac
 813 fi
 814
 815 # Default libgloss CPU subdirectory.
 816 libgloss_dir="$target_cpu"
 817
 818 case "${target}" in
 819   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 820     libgloss_dir=wince
 821     ;;
 822   aarch64*-*-* )
 823     libgloss_dir=aarch64
 824     ;;
 825   arm*-*-*)
 826     libgloss_dir=arm
 827     ;;
 828   cris-*-* | crisv32-*-*)
 829     libgloss_dir=cris
 830     ;;
 831   hppa*-*-*)
 832     libgloss_dir=pa
 833     ;;
 834   i[[3456789]]86-*-*)
 835     libgloss_dir=i386
 836     ;;
 837   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 838     libgloss_dir=m68hc11
 839     ;;
 840   m68*-*-* | fido-*-*)
 841     libgloss_dir=m68k
 842     ;;
 843   mips*-*-*)
 844     libgloss_dir=mips
 845     ;;
 846   powerpc*-*-*)
 847     libgloss_dir=rs6000
 848     ;;
 849   sparc*-*-*)
 850     libgloss_dir=sparc
 851     ;;
 852 esac
 853
 854 # Disable newlib and libgloss for various target OSes.
 855 case "${target}" in
 856   alpha*-dec-osf*)
 857     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 858     ;;
 859   i[[3456789]]86-*-linux*)
 860     # This section makes it possible to build newlib natively on linux.
 861     # If we are using a cross compiler then don't configure newlib.
 862     if test x${is_cross_compiler} != xno ; then
 863       noconfigdirs="$noconfigdirs target-newlib"
 864     fi
 865     noconfigdirs="$noconfigdirs target-libgloss"
 866     # If we are not using a cross compiler, do configure newlib.
 867     # Note however, that newlib will only be configured in this situation
 868     # if the --with-newlib option has been given, because otherwise
 869     # 'target-newlib' will appear in skipdirs.
 870     ;;
 871   i[[3456789]]86-*-rdos*)
 872     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 873     ;;
 874   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 875     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 876     ;;
 877   sparc-*-sunos4*)
 878     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 879     ;;
 880   *-*-aix*)
 881     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 882     ;;
 883   *-*-beos*)
 884     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 885     ;;
 886   *-*-chorusos)
 887     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 888     ;;
 889   *-*-dragonfly*)
 890     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 891     ;;
 892   *-*-freebsd*)
 893     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 894     ;;
 895   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 896     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 897     ;;
 898   *-*-lynxos*)
 899     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 900     ;;
 901   *-*-mingw*)
 902     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 903     ;;
 904   *-*-netbsd*)
 905     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 906     ;;
 907   *-*-netware*)
 908     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 909     ;;
 910   *-*-tpf*)
 911     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 912     ;;
 913   *-*-uclinux*)
 914     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 915     ;;
 916   *-*-vxworks*)
 917     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 918     ;;
 919 esac
 920
 921 case "${target}" in
 922   *-*-chorusos)
 923     ;;
 924   aarch64-*-darwin*)
 925     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 926     noconfigdirs="$noconfigdirs sim target-rda"
 927     ;;
 928   arm-*-darwin*)
 929     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 930     noconfigdirs="$noconfigdirs sim target-rda"
 931     ;;
 932   powerpc-*-darwin*)
 933     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 934     noconfigdirs="$noconfigdirs sim target-rda"
 935     ;;
 936   i[[3456789]]86-*-darwin*)
 937     noconfigdirs="$noconfigdirs ld gprof"
 938     noconfigdirs="$noconfigdirs sim target-rda"
 939     ;;
 940   x86_64-*-darwin[[912]]*)
 941     noconfigdirs="$noconfigdirs ld gas gprof"
 942     noconfigdirs="$noconfigdirs sim target-rda"
 943     ;;
 944   *-*-darwin*)
 945     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 946     noconfigdirs="$noconfigdirs sim target-rda"
 947     ;;
 948   *-*-dragonfly*)
 949     ;;
 950   *-*-freebsd*)
 951     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 952         && test -f /usr/local/include/gmp.h; then
 953       with_gmp=/usr/local
 954     fi
 955     ;;
 956   *-*-kaos*)
 957     # Remove unsupported stuff on all kaOS configurations.
 958     noconfigdirs="$noconfigdirs target-libgloss"
 959     ;;
 960   *-*-netbsd*)
 961     ;;
 962   *-*-netware*)
 963     ;;
 964   *-*-phoenix*)
 965     noconfigdirs="$noconfigdirs target-libgloss"
 966     ;;
 967   *-*-rtems*)
 968     noconfigdirs="$noconfigdirs target-libgloss"
 969     # this is not caught below because this stanza matches earlier
 970     case $target in
 971       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
 972     esac
 973     ;;
 974     # The tpf target doesn't support gdb yet.
 975   *-*-tpf*)
 976     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 977     ;;
 978   *-*-uclinux*)
 979     noconfigdirs="$noconfigdirs target-rda"
 980     ;;
 981   *-*-vxworks*)
 982     ;;
 983   alpha*-dec-osf*)
 984     # ld works, but does not support shared libraries.
 985     # gas doesn't generate exception information.
 986     noconfigdirs="$noconfigdirs gas ld"
 987     ;;
 988   alpha*-*-*vms*)
 989     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 990     ;;
 991   alpha*-*-*)
 992     # newlib is not 64 bit ready
 993     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 994     ;;
 995   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 996     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 997     ;;
 998   arc*-*-*)
 999     noconfigdirs="$noconfigdirs sim"
1000     ;;
1001   arm-*-pe*)
1002     noconfigdirs="$noconfigdirs target-libgloss"
1003     ;;
1004   arm-*-riscix*)
1005     noconfigdirs="$noconfigdirs ld target-libgloss"
1006     ;;
1007   avr-*-*)
1008     if test x${with_avrlibc} != xno; then
1009       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1010     fi
1011     ;;
1012   c4x-*-* | tic4x-*-*)
1013     noconfigdirs="$noconfigdirs target-libgloss"
1014     ;;
1015   tic54x-*-*)
1016     noconfigdirs="$noconfigdirs target-libgloss gdb"
1017     ;;
1018   d10v-*-*)
1019     noconfigdirs="$noconfigdirs target-libgloss"
1020     ;;
1021   d30v-*-*)
1022     noconfigdirs="$noconfigdirs gdb"
1023     ;;
1024   fr30-*-elf*)
1025     noconfigdirs="$noconfigdirs gdb"
1026     ;;
1027   ft32-*-*)
1028     noconfigdirs="$noconfigdirs target-rda gprof"
1029     ;;
1030   moxie-*-*)
1031     noconfigdirs="$noconfigdirs"
1032     ;;
1033   h8300*-*-*)
1034     noconfigdirs="$noconfigdirs target-libgloss"
1035     ;;
1036   h8500-*-*)
1037     noconfigdirs="$noconfigdirs target-libgloss"
1038     ;;
1039   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1040     ;;
1041   hppa*64*-*-hpux*)
1042     noconfigdirs="$noconfigdirs gdb"
1043     ;;
1044   hppa*-*-hpux11*)
1045     noconfigdirs="$noconfigdirs gdb ld"
1046     ;;
1047   hppa*64*-*-linux*)
1048     ;;
1049   hppa*-*-linux*)
1050     ;;
1051   hppa*-*-*elf* | \
1052   hppa*-*-lites* | \
1053   hppa*-*-openbsd* | \
1054   hppa*64*-*-*)
1055     ;;
1056   hppa*-*-pro*)
1057     ;;
1058   hppa*-*-*)
1059     noconfigdirs="$noconfigdirs ld"
1060     ;;
1061   i960-*-*)
1062     noconfigdirs="$noconfigdirs gdb"
1063     ;;
1064   ia64*-*-elf*)
1065     # No gdb support yet.
1066     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1067     ;;
1068   ia64*-**-hpux*)
1069     # No ld support yet.
1070     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1071     ;;
1072   ia64*-*-*vms*)
1073     # No ld support yet.
1074     noconfigdirs="$noconfigdirs libgui itcl ld"
1075     ;;
1076   i[[3456789]]86-w64-mingw*)
1077     ;;
1078   i[[3456789]]86-*-mingw*)
1079     target_configdirs="$target_configdirs target-winsup"
1080     ;;
1081   *-*-cygwin*)
1082     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1083     noconfigdirs="$noconfigdirs target-libgloss"
1084     # always build newlib if winsup directory is present.
1085     if test -d "$srcdir/winsup/cygwin"; then
1086       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1087     elif test -d "$srcdir/newlib"; then
1088       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1089     fi
1090     ;;
1091   i[[3456789]]86-*-pe)
1092     noconfigdirs="$noconfigdirs target-libgloss"
1093     ;;
1094   i[[3456789]]86-*-sco3.2v5*)
1095     # The linker does not yet know about weak symbols in COFF,
1096     # and is not configured to handle mixed ELF and COFF.
1097     noconfigdirs="$noconfigdirs ld target-libgloss"
1098     ;;
1099   i[[3456789]]86-*-sco*)
1100     noconfigdirs="$noconfigdirs gprof target-libgloss"
1101     ;;
1102   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1103     noconfigdirs="$noconfigdirs target-libgloss"
1104     ;;
1105   i[[3456789]]86-*-sysv4*)
1106     noconfigdirs="$noconfigdirs target-libgloss"
1107     ;;
1108   i[[3456789]]86-*-beos*)
1109     noconfigdirs="$noconfigdirs gdb"
1110     ;;
1111   i[[3456789]]86-*-rdos*)
1112     noconfigdirs="$noconfigdirs gdb"
1113     ;;
1114   mmix-*-*)
1115     noconfigdirs="$noconfigdirs gdb"
1116     ;;
1117   mt-*-*)
1118     noconfigdirs="$noconfigdirs sim"
1119     ;;
1120   powerpc-*-aix*)
1121     # copied from rs6000-*-* entry
1122     noconfigdirs="$noconfigdirs gprof"
1123     ;;
1124   powerpc*-*-winnt* | powerpc*-*-pe*)
1125     target_configdirs="$target_configdirs target-winsup"
1126     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1127     # always build newlib.
1128     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1129     ;;
1130     # This is temporary until we can link against shared libraries
1131   powerpcle-*-solaris*)
1132     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1133     ;;
1134   powerpc-*-beos*)
1135     noconfigdirs="$noconfigdirs gdb"
1136     ;;
1137   rs6000-*-lynxos*)
1138     noconfigdirs="$noconfigdirs gprof"
1139     ;;
1140   rs6000-*-aix*)
1141     noconfigdirs="$noconfigdirs gprof"
1142     ;;
1143   rs6000-*-*)
1144     noconfigdirs="$noconfigdirs gprof"
1145     ;;
1146   m68k-apollo-*)
1147     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1148     ;;
1149   microblaze*)
1150     noconfigdirs="$noconfigdirs gprof"
1151     ;;
1152   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1153     if test x$with_newlib = xyes; then
1154       noconfigdirs="$noconfigdirs gprof"
1155     fi
1156     ;;
1157   mips*-*-irix5*)
1158     noconfigdirs="$noconfigdirs gprof target-libgloss"
1159     ;;
1160   mips*-*-irix6*)
1161     noconfigdirs="$noconfigdirs gprof target-libgloss"
1162     ;;
1163   mips*-*-bsd*)
1164     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1165     ;;
1166   mips*-*-linux*)
1167     ;;
1168   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1169   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1170     noconfigdirs="$noconfigdirs ld gas gprof"
1171     ;;
1172   mips*-*-*)
1173     noconfigdirs="$noconfigdirs gprof"
1174     ;;
1175   nvptx*-*-*)
1176     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1177     ;;
1178   or1k*-*-*)
1179     noconfigdirs="$noconfigdirs gdb"
1180     ;;
1181   sh-*-*)
1182     case "${target}" in
1183       sh*-*-elf)
1184          ;;
1185       *)
1186          noconfigdirs="$noconfigdirs target-libgloss" ;;
1187     esac
1188     ;;
1189   sparc-*-sunos4*)
1190     if test x${is_cross_compiler} = xno ; then
1191            use_gnu_ld=no
1192     fi
1193     ;;
1194   tic6x-*-*)
1195     noconfigdirs="$noconfigdirs sim"
1196     ;;
1197   tilepro*-*-* | tilegx*-*-*)
1198     noconfigdirs="$noconfigdirs sim"
1199     ;;
1200   v810-*-*)
1201     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1202     ;;
1203   vax-*-*)
1204     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1205     ;;
1206 esac
1207
1208 # If we aren't building newlib, then don't build libgloss, since libgloss
1209 # depends upon some newlib header files.
1210 case "${noconfigdirs}" in
1211   *target-libgloss*) ;;
1212   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1213 esac
1214
1215 # Work in distributions that contain no compiler tools, like Autoconf.
1216 host_makefile_frag=/dev/null
1217 if test -d ${srcdir}/config ; then
1218 case "${host}" in
1219   i[[3456789]]86-*-msdosdjgpp*)
1220     host_makefile_frag="config/mh-djgpp"
1221     ;;
1222   *-cygwin*)
1223     ACX_CHECK_CYGWIN_CAT_WORKS
1224     host_makefile_frag="config/mh-cygwin"
1225     ;;
1226   *-mingw*)
1227     host_makefile_frag="config/mh-mingw"
1228     ;;
1229   alpha*-linux*)
1230     host_makefile_frag="config/mh-alpha-linux"
1231     ;;
1232   hppa*-hp-hpux10*)
1233     host_makefile_frag="config/mh-pa-hpux10"
1234     ;;
1235   hppa*-hp-hpux*)
1236     host_makefile_frag="config/mh-pa"
1237     ;;
1238   hppa*-*)
1239     host_makefile_frag="config/mh-pa"
1240     ;;
1241   *-*-darwin*)
1242     host_makefile_frag="config/mh-darwin"
1243     ;;
1244   powerpc-*-aix*)
1245     host_makefile_frag="config/mh-ppc-aix"
1246     ;;
1247   rs6000-*-aix*)
1248     host_makefile_frag="config/mh-ppc-aix"
1249     ;;
1250 esac
1251 fi
1252
1253 if test "${build}" != "${host}" ; then
1254   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1255   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1256   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1257   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1258   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1259   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1260   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1261   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1262   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1263   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1264   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1265   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1266 else
1267   AR_FOR_BUILD="\$(AR)"
1268   AS_FOR_BUILD="\$(AS)"
1269   CC_FOR_BUILD="\$(CC)"
1270   CXX_FOR_BUILD="\$(CXX)"
1271   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1272   GOC_FOR_BUILD="\$(GOC)"
1273   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1274   LD_FOR_BUILD="\$(LD)"
1275   NM_FOR_BUILD="\$(NM)"
1276   RANLIB_FOR_BUILD="\$(RANLIB)"
1277   WINDRES_FOR_BUILD="\$(WINDRES)"
1278   WINDMC_FOR_BUILD="\$(WINDMC)"
1279 fi
1280
1281 AC_PROG_CC
1282 AC_PROG_CXX
1283
1284 # We must set the default linker to the linker used by gcc for the correct
1285 # operation of libtool.  If LD is not defined and we are using gcc, try to
1286 # set the LD default to the ld used by gcc.
1287 if test -z "$LD"; then
1288   if test "$GCC" = yes; then
1289     case $build in
1290     *-*-mingw*)
1291       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1292     *)
1293       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1294     esac
1295     case $gcc_prog_ld in
1296     # Accept absolute paths.
1297     [[\\/]* | [A-Za-z]:[\\/]*)]
1298       LD="$gcc_prog_ld" ;;
1299     esac
1300   fi
1301 fi
1302
1303 # Check whether -static-libstdc++ -static-libgcc is supported.
1304 have_static_libs=no
1305 if test "$GCC" = yes; then
1306   saved_LDFLAGS="$LDFLAGS"
1307
1308   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1309   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1310   AC_LANG_PUSH(C++)
1311   AC_LINK_IFELSE([
1312 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1313 #error -static-libstdc++ not implemented
1314 #endif
1315 int main() {}],
1316     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1317     [AC_MSG_RESULT([no])])
1318   AC_LANG_POP(C++)
1319
1320   LDFLAGS="$saved_LDFLAGS"
1321 fi
1322
1323 ACX_PROG_GNAT
1324 ACX_PROG_CMP_IGNORE_INITIAL
1325
1326 AC_ARG_ENABLE([bootstrap],
1327 [AS_HELP_STRING([--enable-bootstrap],
1328                 [enable bootstrapping @<:@yes if native build@:>@])],,
1329 enable_bootstrap=default)
1330
1331 # Issue errors and warnings for invalid/strange bootstrap combinations.
1332 if test -r $srcdir/gcc/configure; then
1333   have_compiler=yes
1334 else
1335   have_compiler=no
1336 fi
1337
1338 case "$have_compiler:$host:$target:$enable_bootstrap" in
1339   *:*:*:no) ;;
1340
1341   # Default behavior.  Enable bootstrap if we have a compiler
1342   # and we are in a native configuration.
1343   yes:$build:$build:default)
1344     enable_bootstrap=yes ;;
1345
1346   *:*:*:default)
1347     enable_bootstrap=no ;;
1348
1349   # We have a compiler and we are in a native configuration, bootstrap is ok
1350   yes:$build:$build:yes)
1351     ;;
1352
1353   # Other configurations, but we have a compiler.  Assume the user knows
1354   # what he's doing.
1355   yes:*:*:yes)
1356     AC_MSG_WARN([trying to bootstrap a cross compiler])
1357     ;;
1358
1359   # No compiler: if they passed --enable-bootstrap explicitly, fail
1360   no:*:*:yes)
1361     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1362
1363   # Fail if wrong command line
1364   *)
1365     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1366     ;;
1367 esac
1368
1369 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1370 # C++98 compiler can still start the bootstrap.
1371 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1372   CXX="$CXX -std=gnu++98"
1373 fi
1374
1375 # Used for setting $lt_cv_objdir
1376 _LT_CHECK_OBJDIR
1377
1378 # Check for GMP, MPFR and MPC
1379 gmplibs="-lmpc -lmpfr -lgmp"
1380 gmpinc=
1381 have_gmp=no
1382
1383 # Specify a location for mpc
1384 # check for this first so it ends up on the link line before mpfr.
1385 AC_ARG_WITH(mpc,
1386 [AS_HELP_STRING([--with-mpc=PATH],
1387                 [specify prefix directory for installed MPC package.
1388                  Equivalent to --with-mpc-include=PATH/include
1389                  plus --with-mpc-lib=PATH/lib])])
1390 AC_ARG_WITH(mpc-include,
1391 [AS_HELP_STRING([--with-mpc-include=PATH],
1392                 [specify directory for installed MPC include files])])
1393 AC_ARG_WITH(mpc-lib,
1394 [AS_HELP_STRING([--with-mpc-lib=PATH],
1395                 [specify directory for the installed MPC library])])
1396
1397 if test "x$with_mpc" != x; then
1398   gmplibs="-L$with_mpc/lib $gmplibs"
1399   gmpinc="-I$with_mpc/include $gmpinc"
1400 fi
1401 if test "x$with_mpc_include" != x; then
1402   gmpinc="-I$with_mpc_include $gmpinc"
1403 fi
1404 if test "x$with_mpc_lib" != x; then
1405   gmplibs="-L$with_mpc_lib $gmplibs"
1406 fi
1407 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1408   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1409   gmpinc='-I$$s/mpc/src '"$gmpinc"
1410   # Do not test the mpc version.  Assume that it is sufficient, since
1411   # it is in the source tree, and the library has not been built yet
1412   # but it would be included on the link line in the version check below
1413   # hence making the test fail.
1414   have_gmp=yes
1415 fi
1416
1417 # Specify a location for mpfr
1418 # check for this first so it ends up on the link line before gmp.
1419 AC_ARG_WITH(mpfr-dir,
1420 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1421 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1422 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1423
1424 AC_ARG_WITH(mpfr,
1425 [AS_HELP_STRING([--with-mpfr=PATH],
1426                 [specify prefix directory for installed MPFR package.
1427                  Equivalent to --with-mpfr-include=PATH/include
1428                  plus --with-mpfr-lib=PATH/lib])])
1429 AC_ARG_WITH(mpfr-include,
1430 [AS_HELP_STRING([--with-mpfr-include=PATH],
1431                 [specify directory for installed MPFR include files])])
1432 AC_ARG_WITH(mpfr-lib,
1433 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1434                 [specify directory for the installed MPFR library])])
1435
1436 if test "x$with_mpfr" != x; then
1437   gmplibs="-L$with_mpfr/lib $gmplibs"
1438   gmpinc="-I$with_mpfr/include $gmpinc"
1439 fi
1440 if test "x$with_mpfr_include" != x; then
1441   gmpinc="-I$with_mpfr_include $gmpinc"
1442 fi
1443 if test "x$with_mpfr_lib" != x; then
1444   gmplibs="-L$with_mpfr_lib $gmplibs"
1445 fi
1446 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1447   # MPFR v3.1.0 moved the sources into a src sub-directory.
1448   if ! test -d ${srcdir}/mpfr/src; then
1449     AC_MSG_ERROR([dnl
1450 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1451   fi
1452   gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1453   gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1454   extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1455   # Do not test the mpfr version.  Assume that it is sufficient, since
1456   # it is in the source tree, and the library has not been built yet
1457   # but it would be included on the link line in the version check below
1458   # hence making the test fail.
1459   have_gmp=yes
1460 fi
1461
1462 # Specify a location for gmp
1463 AC_ARG_WITH(gmp-dir,
1464 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1465 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1466 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1467
1468 AC_ARG_WITH(gmp,
1469 [AS_HELP_STRING([--with-gmp=PATH],
1470                 [specify prefix directory for the installed GMP package.
1471                  Equivalent to --with-gmp-include=PATH/include
1472                  plus --with-gmp-lib=PATH/lib])])
1473 AC_ARG_WITH(gmp-include,
1474 [AS_HELP_STRING([--with-gmp-include=PATH],
1475                 [specify directory for installed GMP include files])])
1476 AC_ARG_WITH(gmp-lib,
1477 [AS_HELP_STRING([--with-gmp-lib=PATH],
1478                 [specify directory for the installed GMP library])])
1479
1480
1481 if test "x$with_gmp" != x; then
1482   gmplibs="-L$with_gmp/lib $gmplibs"
1483   gmpinc="-I$with_gmp/include $gmpinc"
1484 fi
1485 if test "x$with_gmp_include" != x; then
1486   gmpinc="-I$with_gmp_include $gmpinc"
1487 fi
1488 if test "x$with_gmp_lib" != x; then
1489   gmplibs="-L$with_gmp_lib $gmplibs"
1490 fi
1491 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1492   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1493   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1494   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1495   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1496   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1497   # Do not test the gmp version.  Assume that it is sufficient, since
1498   # it is in the source tree, and the library has not been built yet
1499   # but it would be included on the link line in the version check below
1500   # hence making the test fail.
1501   have_gmp=yes
1502 fi
1503
1504 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1505   have_gmp=yes
1506   saved_CFLAGS="$CFLAGS"
1507   CFLAGS="$CFLAGS $gmpinc"
1508   # Check for the recommended and required versions of GMP.
1509   AC_MSG_CHECKING([for the correct version of gmp.h])
1510   AC_TRY_COMPILE([#include "gmp.h"],[
1511   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1512   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1513   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1514   choke me
1515   #endif
1516   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1517   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1518   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1519   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1520   choke me
1521   #endif
1522   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1523    [AC_MSG_RESULT([no]); have_gmp=no])
1524
1525   # If we have GMP, check the MPFR version.
1526   if test x"$have_gmp" = xyes; then
1527     # Check for the recommended and required versions of MPFR.
1528     AC_MSG_CHECKING([for the correct version of mpfr.h])
1529     AC_TRY_COMPILE([#include <gmp.h>
1530     #include <mpfr.h>],[
1531     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1532     choke me
1533     #endif
1534     ], [AC_TRY_COMPILE([#include <gmp.h>
1535     #include <mpfr.h>],[
1536     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1537     choke me
1538     #endif
1539     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1540      [AC_MSG_RESULT([no]); have_gmp=no])
1541   fi
1542
1543   # Check for the MPC header version.
1544   if test x"$have_gmp" = xyes ; then
1545     # Check for the recommended and required versions of MPC.
1546     AC_MSG_CHECKING([for the correct version of mpc.h])
1547     AC_TRY_COMPILE([#include <mpc.h>],[
1548     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1549     choke me
1550     #endif
1551     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1552     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1553     choke me
1554     #endif
1555     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1556      [AC_MSG_RESULT([no]); have_gmp=no])
1557   fi
1558
1559   # Now check the MPFR library.
1560   if test x"$have_gmp" = xyes; then
1561     saved_LIBS="$LIBS"
1562     LIBS="$LIBS $gmplibs"
1563     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1564     AC_TRY_LINK([#include <mpc.h>],[
1565     mpfr_t n;
1566     mpfr_t x;
1567     mpc_t c;
1568     int t;
1569     mpfr_init (n);
1570     mpfr_init (x);
1571     mpfr_atan2 (n, n, x, GMP_RNDN);
1572     mpfr_erfc (n, x, GMP_RNDN);
1573     mpfr_subnormalize (x, t, GMP_RNDN);
1574     mpfr_clear(n);
1575     mpfr_clear(x);
1576     mpc_init2 (c, 53);
1577     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1578     mpc_cosh (c, c, MPC_RNDNN);
1579     mpc_pow (c, c, c, MPC_RNDNN);
1580     mpc_acosh (c, c, MPC_RNDNN);
1581     mpc_clear (c);
1582     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1583     LIBS="$saved_LIBS"
1584   fi
1585
1586   CFLAGS="$saved_CFLAGS"
1587
1588 # The library versions listed in the error message below should match
1589 # the HARD-minimums enforced above.
1590   if test x$have_gmp != xyes; then
1591     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1592 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1593 their locations.  Source code for these libraries can be found at
1594 their respective hosting sites as well as at
1595 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1596 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1597 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1598 make sure that you have installed both the libraries and the header
1599 files.  They may be located in separate packages.])
1600   fi
1601 fi
1602
1603 # Flags needed for both GMP, MPFR and/or MPC.
1604 AC_SUBST(gmplibs)
1605 AC_SUBST(gmpinc)
1606 AC_SUBST(extra_mpfr_configure_flags)
1607 AC_SUBST(extra_mpc_gmp_configure_flags)
1608 AC_SUBST(extra_mpc_mpfr_configure_flags)
1609 AC_SUBST(extra_isl_gmp_configure_flags)
1610
1611 # Libraries to use for stage1 or when not bootstrapping.
1612 AC_ARG_WITH(stage1-libs,
1613 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1614 [if test "$withval" = "no" -o "$withval" = "yes"; then
1615    stage1_libs=
1616  else
1617    stage1_libs=$withval
1618  fi],
1619 [stage1_libs=])
1620 AC_SUBST(stage1_libs)
1621
1622 # Linker flags to use for stage1 or when not bootstrapping.
1623 AC_ARG_WITH(stage1-ldflags,
1624 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1625 [if test "$withval" = "no" -o "$withval" = "yes"; then
1626    stage1_ldflags=
1627  else
1628    stage1_ldflags=$withval
1629  fi],
1630 [stage1_ldflags=
1631  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1632  # if supported.  But if the user explicitly specified the libraries to use,
1633  # trust that they are doing what they want.
1634  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1635    stage1_ldflags="-static-libstdc++ -static-libgcc"
1636  fi])
1637 AC_SUBST(stage1_ldflags)
1638
1639 # Libraries to use for stage2 and later builds.
1640 AC_ARG_WITH(boot-libs,
1641 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1642 [if test "$withval" = "no" -o "$withval" = "yes"; then
1643    poststage1_libs=
1644  else
1645    poststage1_libs=$withval
1646  fi],
1647 [poststage1_libs=])
1648 AC_SUBST(poststage1_libs)
1649
1650 # Linker flags to use for stage2 and later builds.
1651 AC_ARG_WITH(boot-ldflags,
1652 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1653                 [linker flags for stage2 and later])],
1654 [if test "$withval" = "no" -o "$withval" = "yes"; then
1655    poststage1_ldflags=
1656  else
1657    poststage1_ldflags=$withval
1658  fi],
1659 [poststage1_ldflags=
1660  # In stages 2 and 3, default to linking libstdc++ and libgcc
1661  # statically.  But if the user explicitly specified the libraries to
1662  # use, trust that they are doing what they want.
1663  if test "$poststage1_libs" = ""; then
1664    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1665  fi])
1666 AC_SUBST(poststage1_ldflags)
1667
1668 # GCC GRAPHITE dependency isl.
1669 # Basic setup is inlined here, actual checks are in config/isl.m4
1670
1671 AC_ARG_WITH(isl,
1672   [AS_HELP_STRING(
1673    [--with-isl=PATH],
1674    [Specify prefix directory for the installed isl package.
1675     Equivalent to --with-isl-include=PATH/include
1676     plus --with-isl-lib=PATH/lib])])
1677
1678 # Treat --without-isl as a request to disable
1679 # GRAPHITE support and skip all following checks.
1680 if test "x$with_isl" != "xno"; then
1681   # Check for isl
1682   dnl Provide configure switches and initialize islinc & isllibs
1683   dnl with user input.
1684   ISL_INIT_FLAGS
1685   dnl The versions of isl that work for Graphite
1686   ISL_CHECK_VERSION()
1687   dnl Only execute fail-action, if isl has been requested.
1688   ISL_IF_FAILED([
1689     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1690 fi
1691
1692 # If the isl check failed, disable builds of in-tree variant of isl
1693 if test "x$with_isl" = xno ||
1694    test "x$gcc_cv_isl" = xno; then
1695   noconfigdirs="$noconfigdirs isl"
1696   islinc=
1697 fi
1698
1699 AC_SUBST(isllibs)
1700 AC_SUBST(islinc)
1701
1702 # Check for LTO support.
1703 AC_ARG_ENABLE(lto,
1704 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1705 enable_lto=$enableval,
1706 enable_lto=yes; default_enable_lto=yes)
1707
1708 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1709   build_lto_plugin=yes
1710 ],[if test x"$default_enable_lto" = x"yes" ; then
1711     case $target in
1712       *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
1713       # On other non-ELF platforms, LTO has yet to be validated.
1714       *) enable_lto=no ;;
1715     esac
1716   else
1717   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1718   # It would also be nice to check the binutils support, but we don't
1719   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1720   # warn during gcc/ subconfigure; unless you're bootstrapping with
1721   # -flto it won't be needed until after installation anyway.
1722     case $target in
1723       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1724       *) if test x"$enable_lto" = x"yes"; then
1725         AC_MSG_ERROR([LTO support is not enabled for this target.])
1726         fi
1727       ;;
1728     esac
1729   fi
1730   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1731   # Build it unless LTO was explicitly disabled.
1732   case $target in
1733     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1734     *) ;;
1735   esac
1736 ])
1737
1738 AC_ARG_ENABLE(linker-plugin-configure-flags,
1739   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1740     [additional flags for configuring linker plugins @<:@none@:>@])],
1741   extra_linker_plugin_configure_flags=$enableval,
1742   extra_linker_plugin_configure_flags=)
1743 AC_SUBST(extra_linker_plugin_configure_flags)
1744 AC_ARG_ENABLE(linker-plugin-flags,
1745   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1746     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1747   extra_linker_plugin_flags=$enableval,
1748   extra_linker_plugin_flags=)
1749 AC_SUBST(extra_linker_plugin_flags)
1750
1751
1752 # By default, C and C++ are the only stage 1 languages.
1753 stage1_languages=,c,
1754
1755 # Target libraries that we bootstrap.
1756 bootstrap_target_libs=,target-libgcc,
1757
1758 # Figure out what language subdirectories are present.
1759 # Look if the user specified --enable-languages="..."; if not, use
1760 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1761 # go away some day.
1762 # NB:  embedded tabs in this IF block -- do not untabify
1763 if test -d ${srcdir}/gcc; then
1764   if test x"${enable_languages+set}" != xset; then
1765     if test x"${LANGUAGES+set}" = xset; then
1766       enable_languages="${LANGUAGES}"
1767         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1768     else
1769       enable_languages=all
1770     fi
1771   else
1772     if test x"${enable_languages}" = x ||
1773        test x"${enable_languages}" = xyes;
1774        then
1775       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1776       exit 1
1777     fi
1778   fi
1779   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1780
1781   # 'f95' is the old name for the 'fortran' language. We issue a warning
1782   # and make the substitution.
1783   case ,${enable_languages}, in
1784     *,f95,*)
1785       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1786       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1787       ;;
1788   esac
1789
1790   # If bootstrapping, C++ must be enabled.
1791   case ",$enable_languages,:$enable_bootstrap" in
1792     *,c++,*:*) ;;
1793     *:yes)
1794       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1795         enable_languages="${enable_languages},c++"
1796       else
1797         AC_MSG_ERROR([bootstrapping requires c++ sources])
1798       fi
1799       ;;
1800   esac
1801
1802   # First scan to see if an enabled language requires some other language.
1803   # We assume that a given config-lang.in will list all the language
1804   # front ends it requires, even if some are required indirectly.
1805   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1806     case ${lang_frag} in
1807       ..) ;;
1808       # The odd quoting in the next line works around
1809       # an apparent bug in bash 1.12 on linux.
1810       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1811       *)
1812         # From the config-lang.in, get $language, $lang_requires, and
1813         # $lang_requires_boot_languages.
1814         language=
1815         lang_requires=
1816         lang_requires_boot_languages=
1817         . ${lang_frag}
1818         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1819           case ,${enable_languages}, in
1820             *,$other,*) ;;
1821             *,all,*) ;;
1822             *,$language,*)
1823               echo " \`$other' language required by \`$language'; enabling" 1>&2
1824               enable_languages="${enable_languages},${other}"
1825               ;;
1826           esac
1827         done
1828         for other in ${lang_requires_boot_languages} ; do
1829           if test "$other" != "c"; then
1830             case ,${enable_stage1_languages}, in
1831               *,$other,*) ;;
1832               *,all,*) ;;
1833               *)
1834                 case ,${enable_languages}, in
1835                   *,$language,*)
1836                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1837                     enable_stage1_languages="$enable_stage1_languages,${other}"
1838                     ;;
1839                 esac
1840                 ;;
1841             esac
1842           fi
1843         done
1844         ;;
1845     esac
1846   done
1847
1848   new_enable_languages=,c,
1849
1850   # If LTO is enabled, add the LTO front end.
1851   if test "$enable_lto" = "yes" ; then
1852     case ,${enable_languages}, in
1853       *,lto,*) ;;
1854       *) enable_languages="${enable_languages},lto" ;;
1855     esac
1856     if test "${build_lto_plugin}" = "yes" ; then
1857       configdirs="$configdirs lto-plugin"
1858     fi
1859   fi
1860
1861   # If we're building an offloading compiler, add the LTO front end.
1862   if test x"$enable_as_accelerator_for" != x ; then
1863     case ,${enable_languages}, in
1864       *,lto,*) ;;
1865       *) enable_languages="${enable_languages},lto" ;;
1866     esac
1867   fi
1868
1869   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1870   potential_languages=,c,
1871
1872   enabled_target_libs=
1873   disabled_target_libs=
1874
1875   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1876     case ${lang_frag} in
1877       ..) ;;
1878       # The odd quoting in the next line works around
1879       # an apparent bug in bash 1.12 on linux.
1880       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1881       *)
1882         # From the config-lang.in, get $language, $target_libs,
1883         # $lang_dirs, $boot_language, and $build_by_default
1884         language=
1885         target_libs=
1886         lang_dirs=
1887         subdir_requires=
1888         boot_language=no
1889         build_by_default=yes
1890         . ${lang_frag}
1891         if test x${language} = x; then
1892           echo "${lang_frag} doesn't set \$language." 1>&2
1893           exit 1
1894         fi
1895
1896         if test "$language" = "c++"; then
1897           boot_language=yes
1898         fi
1899
1900         add_this_lang=no
1901         case ,${enable_languages}, in
1902           *,${language},*)
1903             # Language was explicitly selected; include it
1904             # unless it is C, which is enabled by default.
1905             if test "$language" != "c"; then
1906               add_this_lang=yes
1907             fi
1908             ;;
1909           *,all,*)
1910             # 'all' was selected, select it if it is a default language
1911             if test "$language" != "c"; then
1912               add_this_lang=${build_by_default}
1913             fi
1914             ;;
1915         esac
1916
1917         # Disable languages that need other directories if these aren't available.
1918         for i in $subdir_requires; do
1919           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1920           case ,${enable_languages}, in
1921             *,${language},*)
1922               # Specifically requested language; tell them.
1923               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1924               ;;
1925             *)
1926               # Silently disable.
1927               add_this_lang=unsupported
1928               ;;
1929           esac
1930         done
1931
1932         # Disable Ada if no preexisting GNAT is available.
1933         case ,${enable_languages},:${language}:${have_gnat} in
1934           *,${language},*:ada:no)
1935             # Specifically requested language; tell them.
1936             AC_MSG_ERROR([GNAT is required to build $language])
1937             ;;
1938           *:ada:no)
1939             # Silently disable.
1940             add_this_lang=unsupported
1941             ;;
1942         esac
1943
1944         # Disable a language that is unsupported by the target.
1945         case " $unsupported_languages " in
1946           *" $language "*)
1947             add_this_lang=unsupported
1948             ;;
1949         esac
1950
1951         case $add_this_lang in
1952           unsupported)
1953             # Remove language-dependent dirs.
1954             disabled_target_libs="$disabled_target_libs $target_libs"
1955             noconfigdirs="$noconfigdirs $lang_dirs"
1956             ;;
1957           no)
1958             # Remove language-dependent dirs; still show language as supported.
1959             disabled_target_libs="$disabled_target_libs $target_libs"
1960             noconfigdirs="$noconfigdirs $lang_dirs"
1961             potential_languages="${potential_languages}${language},"
1962             ;;
1963           yes)
1964             new_enable_languages="${new_enable_languages}${language},"
1965             potential_languages="${potential_languages}${language},"
1966             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1967             enabled_target_libs="$enabled_target_libs $target_libs"
1968             case "${boot_language}:,$enable_stage1_languages," in
1969               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1970                 # Add to (comma-separated) list of stage 1 languages.
1971                 case ",$stage1_languages," in
1972                   *,$language,* | ,yes, | ,all,) ;;
1973                   *) stage1_languages="${stage1_languages}${language}," ;;
1974                 esac
1975                 # We need to bootstrap any supporting libraries.
1976                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1977                 ;;
1978             esac
1979             ;;
1980         esac
1981         ;;
1982     esac
1983   done
1984
1985   # Add target libraries which are only needed for disabled languages
1986   # to noconfigdirs.
1987   if test -n "$disabled_target_libs"; then
1988     for dir in $disabled_target_libs; do
1989       case " $enabled_target_libs " in
1990       *" ${dir} "*) ;;
1991       *) noconfigdirs="$noconfigdirs $dir" ;;
1992       esac
1993     done
1994   fi
1995
1996   AC_ARG_ENABLE(stage1-languages,
1997   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1998                   [choose additional languages to build during
1999                   stage1.  Mostly useful for compiler development])],
2000   [case ,${enable_stage1_languages}, in
2001     ,no,|,,)
2002       # Set it to something that will have no effect in the loop below
2003       enable_stage1_languages=c ;;
2004     ,yes,)
2005       enable_stage1_languages=`echo $new_enable_languages | \
2006         sed -e "s/^,//" -e "s/,$//" ` ;;
2007     *,all,*)
2008       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2009         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2010   esac
2011
2012   # Add "good" languages from enable_stage1_languages to stage1_languages,
2013   # while "bad" languages go in missing_languages.  Leave no duplicates.
2014   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2015     case $potential_languages in
2016       *,$i,*)
2017         case $stage1_languages in
2018           *,$i,*) ;;
2019           *) stage1_languages="$stage1_languages$i," ;;
2020         esac ;;
2021       *)
2022         case $missing_languages in
2023           *,$i,*) ;;
2024           *) missing_languages="$missing_languages$i," ;;
2025         esac ;;
2026      esac
2027   done])
2028
2029   # Remove leading/trailing commas that were added for simplicity
2030   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2031   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2032   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2033   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2034
2035   if test "x$missing_languages" != x; then
2036     AC_MSG_ERROR([
2037 The following requested languages could not be built: ${missing_languages}
2038 Supported languages are: ${potential_languages}])
2039   fi
2040   if test "x$new_enable_languages" != "x$enable_languages"; then
2041     echo The following languages will be built: ${new_enable_languages}
2042     enable_languages="$new_enable_languages"
2043   fi
2044
2045   AC_SUBST(stage1_languages)
2046   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2047 fi
2048
2049 # Handle --disable-<component> generically.
2050 for dir in $configdirs $build_configdirs $target_configdirs ; do
2051   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2052   varname=`echo $dirname | sed -e s/+/_/g`
2053   if eval test x\${enable_${varname}} "=" xno ; then
2054     noconfigdirs="$noconfigdirs $dir"
2055   fi
2056 done
2057
2058 # Check for Boehm's garbage collector
2059 AC_ARG_ENABLE(objc-gc,
2060 [AS_HELP_STRING([--enable-objc-gc],
2061                 [enable use of Boehm's garbage collector with the
2062                  GNU Objective-C runtime])])
2063 AC_ARG_WITH([target-bdw-gc],
2064 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2065                 [specify prefix directory for installed bdw-gc package.
2066                  Equivalent to --with-target-bdw-gc-include=PATH/include
2067                  plus --with-target-bdw-gc-lib=PATH/lib])])
2068 AC_ARG_WITH([target-bdw-gc-include],
2069 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2070                 [specify directories for installed bdw-gc include files])])
2071 AC_ARG_WITH([target-bdw-gc-lib],
2072 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2073                 [specify directories for installed bdw-gc library])])
2074
2075 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2076   AC_MSG_CHECKING([for bdw garbage collector])
2077   if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2078     dnl no bdw-gw options, assume default locations
2079     AC_MSG_RESULT([using bdw-gc in default locations])
2080   else
2081     dnl bdw-gw options, first error checking, complete checking in libobjc
2082     if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2083       AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2084     elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2085       AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2086     else
2087       AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2088     fi
2089   fi
2090 esac
2091
2092 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2093 case ,${enable_languages}, in
2094   *,c++,*)
2095     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2096     case "${noconfigdirs}" in
2097       *target-libstdc++-v3*)
2098         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2099         ;;
2100       *) ;;
2101     esac
2102     ;;
2103   *)
2104     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2105     ;;
2106 esac
2107
2108 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2109 # $build_configdirs and $target_configdirs.
2110 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2111
2112 notsupp=""
2113 for dir in . $skipdirs $noconfigdirs ; do
2114   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2115   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2116     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2117     if test -r $srcdir/$dirname/configure ; then
2118       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2119         true
2120       else
2121         notsupp="$notsupp $dir"
2122       fi
2123     fi
2124   fi
2125   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2126     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2127     if test -r $srcdir/$dirname/configure ; then
2128       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2129         true
2130       else
2131         notsupp="$notsupp $dir"
2132       fi
2133     fi
2134   fi
2135   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2136     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2137     if test -r $srcdir/$dirname/configure ; then
2138       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2139         true
2140       else
2141         notsupp="$notsupp $dir"
2142       fi
2143     fi
2144   fi
2145 done
2146
2147 # Quietly strip out all directories which aren't configurable in this tree.
2148 # This relies on all configurable subdirectories being autoconfiscated, which
2149 # is now the case.
2150 build_configdirs_all="$build_configdirs"
2151 build_configdirs=
2152 for i in ${build_configdirs_all} ; do
2153   j=`echo $i | sed -e s/build-//g`
2154   if test -f ${srcdir}/$j/configure ; then
2155     build_configdirs="${build_configdirs} $i"
2156   fi
2157 done
2158
2159 configdirs_all="$configdirs"
2160 configdirs=
2161 for i in ${configdirs_all} ; do
2162   if test -f ${srcdir}/$i/configure ; then
2163     configdirs="${configdirs} $i"
2164   fi
2165 done
2166
2167 target_configdirs_all="$target_configdirs"
2168 target_configdirs=
2169 for i in ${target_configdirs_all} ; do
2170   j=`echo $i | sed -e s/target-//g`
2171   if test -f ${srcdir}/$j/configure ; then
2172     target_configdirs="${target_configdirs} $i"
2173   fi
2174 done
2175
2176 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2177 # so we have to add it after the preceding checks.
2178 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2179 then
2180   case " $configdirs " in
2181     *" libiberty "*)
2182       # If we can build libiberty, we can also build libiberty-linker-plugin.
2183       configdirs="$configdirs libiberty-linker-plugin"
2184       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2185         --with-libiberty=../libiberty-linker-plugin";;
2186     *)
2187       AC_MSG_ERROR([libiberty missing]);;
2188   esac
2189 fi
2190
2191 # Sometimes we have special requirements for the host libiberty.
2192 extra_host_libiberty_configure_flags=
2193 extra_host_zlib_configure_flags=
2194 case " $configdirs " in
2195   *" lto-plugin "* | *" libcc1 "*)
2196     # When these are to be built as shared libraries, the same applies to
2197     # libiberty.
2198     extra_host_libiberty_configure_flags=--enable-shared
2199     ;;
2200   *" bfd "*)
2201     # When bfd is to be built as a shared library, the same applies to
2202     # zlib.
2203     if test "$enable_shared" = "yes"; then
2204       extra_host_zlib_configure_flags=--enable-host-shared
2205     fi
2206     ;;
2207 esac
2208 AC_SUBST(extra_host_libiberty_configure_flags)
2209 AC_SUBST(extra_host_zlib_configure_flags)
2210
2211 # Produce a warning message for the subdirs we can't configure.
2212 # This isn't especially interesting in the Cygnus tree, but in the individual
2213 # FSF releases, it's important to let people know when their machine isn't
2214 # supported by the one or two programs in a package.
2215
2216 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2217   # If $appdirs is non-empty, at least one of those directories must still
2218   # be configured, or we error out.  (E.g., if the gas release supports a
2219   # specified target in some subdirs but not the gas subdir, we shouldn't
2220   # pretend that all is well.)
2221   if test -n "$appdirs" ; then
2222     for dir in $appdirs ; do
2223       if test -r $dir/Makefile.in ; then
2224         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2225           appdirs=""
2226           break
2227         fi
2228         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2229           appdirs=""
2230           break
2231         fi
2232       fi
2233     done
2234     if test -n "$appdirs" ; then
2235       echo "*** This configuration is not supported by this package." 1>&2
2236       exit 1
2237     fi
2238   fi
2239   # Okay, some application will build, or we don't care to check.  Still
2240   # notify of subdirs not getting built.
2241   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2242   echo "    ${notsupp}" 1>&2
2243   echo "    (Any other directories should still work fine.)" 1>&2
2244 fi
2245
2246 case "$host" in
2247   *msdosdjgpp*)
2248     enable_gdbtk=no ;;
2249 esac
2250
2251 # To find our prefix, in gcc_cv_tool_prefix.
2252 ACX_TOOL_DIRS
2253
2254 copy_dirs=
2255
2256 AC_ARG_WITH([build-sysroot],
2257   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2258                   [use sysroot as the system root during the build])],
2259   [if test x"$withval" != x ; then
2260      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2261    fi],
2262   [SYSROOT_CFLAGS_FOR_TARGET=])
2263 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2264
2265 AC_ARG_WITH([debug-prefix-map],
2266   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2267                   [map A to B, C to D ... in debug information])],
2268   [if test x"$withval" != x; then
2269      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2270      for debug_map in $withval; do
2271        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2272      done
2273    fi],
2274   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2275 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2276
2277 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2278 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2279 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2280 # We want to ensure that TARGET libraries (which we know are built with
2281 # gcc) are built with "-O2 -g", so include those options when setting
2282 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2283 if test "x$CFLAGS_FOR_TARGET" = x; then
2284   if test "x${is_cross_compiler}" = xyes; then
2285     CFLAGS_FOR_TARGET="-g -O2"
2286   else
2287     CFLAGS_FOR_TARGET=$CFLAGS
2288     case " $CFLAGS " in
2289       *" -O2 "*) ;;
2290       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2291     esac
2292     case " $CFLAGS " in
2293       *" -g "* | *" -g3 "*) ;;
2294       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2295     esac
2296   fi
2297 fi
2298 AC_SUBST(CFLAGS_FOR_TARGET)
2299
2300 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2301   if test "x${is_cross_compiler}" = xyes; then
2302     CXXFLAGS_FOR_TARGET="-g -O2"
2303   else
2304     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2305     case " $CXXFLAGS " in
2306       *" -O2 "*) ;;
2307       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2308     esac
2309     case " $CXXFLAGS " in
2310       *" -g "* | *" -g3 "*) ;;
2311       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2312     esac
2313   fi
2314 fi
2315 AC_SUBST(CXXFLAGS_FOR_TARGET)
2316
2317 AC_SUBST(LDFLAGS_FOR_TARGET)
2318
2319 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2320 # the named directory are copied to $(tooldir)/sys-include.
2321 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2322   if test x${is_cross_compiler} = xno ; then
2323     echo 1>&2 '***' --with-headers is only supported when cross compiling
2324     exit 1
2325   fi
2326   if test x"${with_headers}" != xyes ; then
2327     x=${gcc_cv_tool_prefix}
2328     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2329   fi
2330 fi
2331
2332 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2333 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2334 # are permitted.
2335 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2336   if test x${is_cross_compiler} = xno ; then
2337     echo 1>&2 '***' --with-libs is only supported when cross compiling
2338     exit 1
2339   fi
2340   if test x"${with_libs}" != xyes ; then
2341     # Copy the libraries in reverse order, so that files in the first named
2342     # library override files in subsequent libraries.
2343     x=${gcc_cv_tool_prefix}
2344     for l in ${with_libs}; do
2345       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2346     done
2347   fi
2348 fi
2349
2350 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2351 #
2352 # This is done by determining whether or not the appropriate directory
2353 # is available, and by checking whether or not specific configurations
2354 # have requested that this magic not happen.
2355 #
2356 # The command line options always override the explicit settings in
2357 # configure.ac, and the settings in configure.ac override this magic.
2358 #
2359 # If the default for a toolchain is to use GNU as and ld, and you don't
2360 # want to do that, then you should use the --without-gnu-as and
2361 # --without-gnu-ld options for the configure script.  Similarly, if
2362 # the default is to use the included zlib and you don't want to do that,
2363 # you should use the --with-system-zlib option for the configure script.
2364
2365 if test x${use_gnu_as} = x &&
2366    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2367   with_gnu_as=yes
2368   extra_host_args="$extra_host_args --with-gnu-as"
2369 fi
2370
2371 if test x${use_gnu_ld} = x &&
2372    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2373   with_gnu_ld=yes
2374   extra_host_args="$extra_host_args --with-gnu-ld"
2375 fi
2376
2377 if test x${use_included_zlib} = x &&
2378    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2379   :
2380 else
2381   with_system_zlib=yes
2382   extra_host_args="$extra_host_args --with-system-zlib"
2383 fi
2384
2385 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2386 # can detect this case.
2387
2388 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2389   with_newlib=yes
2390   extra_host_args="$extra_host_args --with-newlib"
2391 fi
2392
2393 # Handle ${copy_dirs}
2394 set fnord ${copy_dirs}
2395 shift
2396 while test $# != 0 ; do
2397   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2398     :
2399   else
2400     echo Copying $1 to $2
2401
2402     # Use the install script to create the directory and all required
2403     # parent directories.
2404     if test -d $2 ; then
2405       :
2406     else
2407       echo >config.temp
2408       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2409     fi
2410
2411     # Copy the directory, assuming we have tar.
2412     # FIXME: Should we use B in the second tar?  Not all systems support it.
2413     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2414
2415     # It is the responsibility of the user to correctly adjust all
2416     # symlinks.  If somebody can figure out how to handle them correctly
2417     # here, feel free to add the code.
2418
2419     echo $1 > $2/COPIED
2420   fi
2421   shift; shift
2422 done
2423
2424 # Determine a target-dependent exec_prefix that the installed
2425 # gcc will search in.  Keep this list sorted by triplet, with
2426 # the *-*-osname triplets last.
2427 md_exec_prefix=
2428 case "${target}" in
2429   i[[34567]]86-pc-msdosdjgpp*)
2430     md_exec_prefix=/dev/env/DJDIR/bin
2431     ;;
2432   *-*-hpux* | \
2433   *-*-nto-qnx* | \
2434   *-*-solaris2*)
2435     md_exec_prefix=/usr/ccs/bin
2436     ;;
2437 esac
2438
2439 extra_arflags_for_target=
2440 extra_nmflags_for_target=
2441 extra_ranlibflags_for_target=
2442 target_makefile_frag=/dev/null
2443 case "${target}" in
2444   spu-*-*)
2445     target_makefile_frag="config/mt-spu"
2446     ;;
2447   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2448     target_makefile_frag="config/mt-sde"
2449     ;;
2450   mipsisa*-*-elfoabi*)
2451     target_makefile_frag="config/mt-mips-elfoabi"
2452     ;;
2453   mips*-*-*linux* | mips*-*-gnu*)
2454     target_makefile_frag="config/mt-mips-gnu"
2455     ;;
2456   nios2-*-elf*)
2457     target_makefile_frag="config/mt-nios2-elf"
2458     ;;
2459   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2460     target_makefile_frag="config/mt-gnu"
2461     ;;
2462   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2463     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2464     # commands to handle both 32-bit and 64-bit objects.  These flags are
2465     # harmless if we're using GNU nm or ar.
2466     extra_arflags_for_target=" -X32_64"
2467     extra_nmflags_for_target=" -B -X32_64"
2468     ;;
2469 esac
2470
2471 alphaieee_frag=/dev/null
2472 case $target in
2473   alpha*-*-*)
2474     # This just makes sure to use the -mieee option to build target libs.
2475     # This should probably be set individually by each library.
2476     alphaieee_frag="config/mt-alphaieee"
2477     ;;
2478 esac
2479
2480 # If --enable-target-optspace always use -Os instead of -O2 to build
2481 # the target libraries, similarly if it is not specified, use -Os
2482 # on selected platforms.
2483 ospace_frag=/dev/null
2484 case "${enable_target_optspace}:${target}" in
2485   yes:*)
2486     ospace_frag="config/mt-ospace"
2487     ;;
2488   :d30v-*)
2489     ospace_frag="config/mt-d30v"
2490     ;;
2491   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2492     ospace_frag="config/mt-ospace"
2493     ;;
2494   no:* | :*)
2495     ;;
2496   *)
2497     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2498     ;;
2499 esac
2500
2501 # Some systems (e.g., one of the i386-aix systems the gas testers are
2502 # using) don't handle "\$" correctly, so don't use it here.
2503 tooldir='${exec_prefix}'/${target_noncanonical}
2504 build_tooldir=${tooldir}
2505
2506 # Create a .gdbinit file which runs the one in srcdir
2507 # and tells GDB to look there for source files.
2508
2509 if test -r ${srcdir}/.gdbinit ; then
2510   case ${srcdir} in
2511     .) ;;
2512     *) cat > ./.gdbinit <<EOF
2513 # ${NO_EDIT}
2514 dir ${srcdir}
2515 dir .
2516 source ${srcdir}/.gdbinit
2517 EOF
2518     ;;
2519   esac
2520 fi
2521
2522 # Make sure that the compiler is able to generate an executable.  If it
2523 # can't, we are probably in trouble.  We don't care whether we can run the
2524 # executable--we might be using a cross compiler--we only care whether it
2525 # can be created.  At this point the main configure script has set CC.
2526 we_are_ok=no
2527 echo "int main () { return 0; }" > conftest.c
2528 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2529 if test $? = 0 ; then
2530   if test -s conftest || test -s conftest.exe ; then
2531     we_are_ok=yes
2532   fi
2533 fi
2534 case $we_are_ok in
2535   no)
2536     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2537     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2538     rm -f conftest*
2539     exit 1
2540     ;;
2541 esac
2542 rm -f conftest*
2543
2544 # Decide which environment variable is used to find dynamic libraries.
2545 case "${host}" in
2546   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2547   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2548   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2549   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2550 esac
2551
2552 # On systems where the dynamic library environment variable is PATH,
2553 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2554 # built executables to PATH.
2555 if test "$RPATH_ENVVAR" = PATH; then
2556   GCC_SHLIB_SUBDIR=/shlib
2557 else
2558   GCC_SHLIB_SUBDIR=
2559 fi
2560
2561 # Adjust the toplevel makefile according to whether bootstrap was selected.
2562 case $enable_bootstrap in
2563   yes)
2564     bootstrap_suffix=bootstrap
2565     BUILD_CONFIG=bootstrap-debug
2566     ;;
2567   no)
2568     bootstrap_suffix=no-bootstrap
2569     BUILD_CONFIG=
2570     ;;
2571 esac
2572
2573 AC_MSG_CHECKING(for default BUILD_CONFIG)
2574
2575 AC_ARG_WITH([build-config],
2576   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2577                   [use config/NAME.mk build configuration])],
2578   [case $with_build_config in
2579    yes) with_build_config= ;;
2580    no) with_build_config= BUILD_CONFIG= ;;
2581    esac])
2582
2583 if test "x${with_build_config}" != x; then
2584   BUILD_CONFIG=$with_build_config
2585 else
2586   case $BUILD_CONFIG in
2587   bootstrap-debug)
2588     if echo "int f (void) { return 0; }" > conftest.c &&
2589        ${CC} -c conftest.c &&
2590        mv conftest.o conftest.o.g0 &&
2591        ${CC} -c -g conftest.c &&
2592        mv conftest.o conftest.o.g &&
2593        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2594       :
2595     else
2596       BUILD_CONFIG=
2597     fi
2598     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2599     ;;
2600   esac
2601 fi
2602 AC_MSG_RESULT($BUILD_CONFIG)
2603 AC_SUBST(BUILD_CONFIG)
2604
2605 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2606 AC_MSG_CHECKING([for --enable-vtable-verify])
2607 AC_ARG_ENABLE(vtable-verify,
2608 [AS_HELP_STRING([--enable-vtable-verify],
2609                 [Enable vtable verification feature])],
2610 [case "$enableval" in
2611  yes) enable_vtable_verify=yes ;;
2612  no)  enable_vtable_verify=no ;;
2613  *)   enable_vtable_verify=no;;
2614  esac],
2615 [enable_vtable_verify=no])
2616 AC_MSG_RESULT($enable_vtable_verify)
2617
2618 # Record target_configdirs and the configure arguments for target and
2619 # build configuration in Makefile.
2620 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2621 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2622 bootstrap_fixincludes=no
2623
2624 # If we are building libgomp, bootstrap it.
2625 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2626   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2627 fi
2628
2629 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2630 # or bootstrap-ubsan, bootstrap it.
2631 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2632   case "$BUILD_CONFIG" in
2633     *bootstrap-asan* | *bootstrap-ubsan* )
2634       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2635       bootstrap_fixincludes=yes
2636       ;;
2637   esac
2638 fi
2639
2640 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2641 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2642    test "$enable_vtable_verify" != no; then
2643   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2644 fi
2645
2646 # If we are building libmpx and $BUILD_CONFIG contains bootstrap-mpx,
2647 # bootstrap it.
2648 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2649   case "$BUILD_CONFIG" in
2650     *bootstrap-mpx* )
2651       bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2652       ;;
2653   esac
2654 fi
2655
2656 # Determine whether gdb needs tk/tcl or not.
2657 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2658 # and in that case we want gdb to be built without tk.  Ugh!
2659 # In fact I believe gdb is the *only* package directly dependent on tk,
2660 # so we should be able to put the 'maybe's in unconditionally and
2661 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2662 # 100% sure that that's safe though.
2663
2664 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2665 case "$enable_gdbtk" in
2666   no)
2667     GDB_TK="" ;;
2668   yes)
2669     GDB_TK="${gdb_tk}" ;;
2670   *)
2671     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2672     # distro.  Eventually someone will fix this and move Insight, nee
2673     # gdbtk to a separate directory.
2674     if test -d ${srcdir}/gdb/gdbtk ; then
2675       GDB_TK="${gdb_tk}"
2676     else
2677       GDB_TK=""
2678     fi
2679     ;;
2680 esac
2681 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2682 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2683
2684 # Strip out unwanted targets.
2685
2686 # While at that, we remove Makefiles if we were started for recursive
2687 # configuration, so that the top-level Makefile reconfigures them,
2688 # like we used to do when configure itself was recursive.
2689
2690 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2691 # but now we're fixing up the Makefile ourselves with the additional
2692 # commands passed to AC_CONFIG_FILES.  Use separate variables
2693 # extrasub-{build,host,target} not because there is any reason to split
2694 # the substitutions up that way, but only to remain below the limit of
2695 # 99 commands in a script, for HP-UX sed.
2696 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2697
2698 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2699   yes:yes:*\ gold\ *:*,c++,*) ;;
2700   yes:yes:*\ gold\ *:*)
2701     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2702     ;;
2703 esac
2704
2705 extrasub_build=
2706 for module in ${build_configdirs} ; do
2707   if test -z "${no_recursion}" \
2708      && test -f ${build_subdir}/${module}/Makefile; then
2709     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2710     rm -f ${build_subdir}/${module}/Makefile
2711   fi
2712   extrasub_build="$extrasub_build
2713 /^@if build-$module\$/d
2714 /^@endif build-$module\$/d
2715 /^@if build-$module-$bootstrap_suffix\$/d
2716 /^@endif build-$module-$bootstrap_suffix\$/d"
2717 done
2718 extrasub_host=
2719 for module in ${configdirs} ; do
2720   if test -z "${no_recursion}"; then
2721     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2722       if test -f ${file}; then
2723         echo 1>&2 "*** removing ${file} to force reconfigure"
2724         rm -f ${file}
2725       fi
2726     done
2727   fi
2728   case ${module},${bootstrap_fixincludes} in
2729     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2730     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2731   esac
2732   extrasub_host="$extrasub_host
2733 /^@if $module\$/d
2734 /^@endif $module\$/d
2735 /^@if $module-$host_bootstrap_suffix\$/d
2736 /^@endif $module-$host_bootstrap_suffix\$/d"
2737 done
2738 extrasub_target=
2739 for module in ${target_configdirs} ; do
2740   if test -z "${no_recursion}" \
2741      && test -f ${target_subdir}/${module}/Makefile; then
2742     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2743     rm -f ${target_subdir}/${module}/Makefile
2744   fi
2745
2746   # We only bootstrap target libraries listed in bootstrap_target_libs.
2747   case $bootstrap_target_libs in
2748     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2749     *) target_bootstrap_suffix=no-bootstrap ;;
2750   esac
2751
2752   extrasub_target="$extrasub_target
2753 /^@if target-$module\$/d
2754 /^@endif target-$module\$/d
2755 /^@if target-$module-$target_bootstrap_suffix\$/d
2756 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2757 done
2758
2759 # Do the final fixup along with target modules.
2760 extrasub_target="$extrasub_target
2761 /^@if /,/^@endif /d"
2762
2763 # Create the serialization dependencies.  This uses a temporary file.
2764
2765 AC_ARG_ENABLE([serial-configure],
2766 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2767                 [force sequential configuration of
2768                  sub-packages for the host, target or build
2769                  machine, or all sub-packages])])
2770
2771 case ${enable_serial_configure} in
2772   yes)
2773     enable_serial_build_configure=yes
2774     enable_serial_host_configure=yes
2775     enable_serial_target_configure=yes
2776     ;;
2777 esac
2778
2779 # These force 'configure's to be done one at a time, to avoid problems
2780 # with contention over a shared config.cache.
2781 rm -f serdep.tmp
2782 echo '# serdep.tmp' > serdep.tmp
2783 olditem=
2784 test "x${enable_serial_build_configure}" = xyes &&
2785 for item in ${build_configdirs} ; do
2786   case ${olditem} in
2787     "") ;;
2788     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2789   esac
2790   olditem=${item}
2791 done
2792 olditem=
2793 test "x${enable_serial_host_configure}" = xyes &&
2794 for item in ${configdirs} ; do
2795   case ${olditem} in
2796     "") ;;
2797     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2798   esac
2799   olditem=${item}
2800 done
2801 olditem=
2802 test "x${enable_serial_target_configure}" = xyes &&
2803 for item in ${target_configdirs} ; do
2804   case ${olditem} in
2805     "") ;;
2806     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2807   esac
2808   olditem=${item}
2809 done
2810 serialization_dependencies=serdep.tmp
2811 AC_SUBST_FILE(serialization_dependencies)
2812
2813 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2814 # target, nonopt, and variable assignments.  These are the ones we
2815 # might not want to pass down to subconfigures.  The exception being
2816 # --cache-file=/dev/null, which is used to turn off the use of cache
2817 # files altogether, and which should be passed on to subconfigures.
2818 # Also strip program-prefix, program-suffix, and program-transform-name,
2819 # so that we can pass down a consistent program-transform-name.
2820 baseargs=
2821 tbaseargs=
2822 keep_next=no
2823 skip_next=no
2824 eval "set -- $ac_configure_args"
2825 for ac_arg
2826 do
2827   if test X"$skip_next" = X"yes"; then
2828     skip_next=no
2829     continue
2830   fi
2831   if test X"$keep_next" = X"yes"; then
2832     case $ac_arg in
2833       *\'*)
2834         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2835     esac
2836     baseargs="$baseargs '$ac_arg'"
2837     tbaseargs="$tbaseargs '$ac_arg'"
2838     keep_next=no
2839     continue
2840   fi
2841
2842   # Handle separated arguments.  Based on the logic generated by
2843   # autoconf 2.59.
2844   case $ac_arg in
2845     *=* | --config-cache | -C | -disable-* | --disable-* \
2846       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2847       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2848       | -with-* | --with-* | -without-* | --without-* | --x)
2849       separate_arg=no
2850       ;;
2851     -*)
2852       separate_arg=yes
2853       ;;
2854     *)
2855       separate_arg=no
2856       ;;
2857   esac
2858
2859   skip_targ=no
2860   case $ac_arg in
2861 changequote(,)
2862   --with-* | --without-*)
2863     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2864
2865     case $libopt in
2866     *[-_]include)
2867       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2868       ;;
2869     *[-_]lib)
2870       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2871       ;;
2872     *)
2873       lib=$libopt
2874       ;;
2875     esac
2876 changequote([,])
2877
2878     case $lib in
2879     mpc | mpfr | gmp | isl)
2880       # If we're processing --with-$lib, --with-$lib-include or
2881       # --with-$lib-lib, for one of the libs above, and target is
2882       # different from host, don't pass the current argument to any
2883       # target library's configure.
2884       if test x$is_cross_compiler = xyes; then
2885         skip_targ=yes
2886       fi
2887       ;;
2888     esac
2889     ;;
2890   esac
2891
2892   case "$ac_arg" in
2893     --cache-file=/dev/null | \
2894     -cache-file=/dev/null )
2895       # Handled here to avoid the test to skip args below.
2896       baseargs="$baseargs '$ac_arg'"
2897       tbaseargs="$tbaseargs '$ac_arg'"
2898       # Assert: $separate_arg should always be no.
2899       keep_next=$separate_arg
2900       ;;
2901     --no*)
2902       continue
2903       ;;
2904     --c* | \
2905     --sr* | \
2906     --ho* | \
2907     --bu* | \
2908     --t* | \
2909     --program-* | \
2910     -cache_file* | \
2911     -srcdir* | \
2912     -host* | \
2913     -build* | \
2914     -target* | \
2915     -program-prefix* | \
2916     -program-suffix* | \
2917     -program-transform-name* )
2918       skip_next=$separate_arg
2919       continue
2920       ;;
2921     -*)
2922       # An option.  Add it.
2923       case $ac_arg in
2924         *\'*)
2925           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2926       esac
2927       baseargs="$baseargs '$ac_arg'"
2928       if test X"$skip_targ" = Xno; then
2929         tbaseargs="$tbaseargs '$ac_arg'"
2930       fi
2931       keep_next=$separate_arg
2932       ;;
2933     *)
2934       # Either a variable assignment, or a nonopt (triplet).  Don't
2935       # pass it down; let the Makefile handle this.
2936       continue
2937       ;;
2938   esac
2939 done
2940 # Remove the initial space we just introduced and, as these will be
2941 # expanded by make, quote '$'.
2942 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2943
2944 # Add in --program-transform-name, after --program-prefix and
2945 # --program-suffix have been applied to it.  Autoconf has already
2946 # doubled dollar signs and backslashes in program_transform_name; we want
2947 # the backslashes un-doubled, and then the entire thing wrapped in single
2948 # quotes, because this will be expanded first by make and then by the shell.
2949 # Also, because we want to override the logic in subdir configure scripts to
2950 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2951 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2952 ${program_transform_name}
2953 EOF_SED
2954 gcc_transform_name=`cat conftestsed.out`
2955 rm -f conftestsed.out
2956 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2957 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2958 if test "$silent" = yes; then
2959   baseargs="$baseargs --silent"
2960   tbaseargs="$tbaseargs --silent"
2961 fi
2962 baseargs="$baseargs --disable-option-checking"
2963 tbaseargs="$tbaseargs --disable-option-checking"
2964
2965 # Record and document user additions to sub configure arguments.
2966 AC_ARG_VAR([build_configargs],
2967            [additional configure arguments for build directories])
2968 AC_ARG_VAR([host_configargs],
2969            [additional configure arguments for host directories])
2970 AC_ARG_VAR([target_configargs],
2971            [additional configure arguments for target directories])
2972
2973 # For the build-side libraries, we just need to pretend we're native,
2974 # and not use the same cache file.  Multilibs are neither needed nor
2975 # desired.  We can't even use the same cache file for all build-side
2976 # libraries, as they're compiled differently; some with C, some with
2977 # C++ or with different feature-enabling options.
2978 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
2979
2980 # For host modules, accept cache file option, or specification as blank.
2981 case "${cache_file}" in
2982 "") # empty
2983   cache_file_option="" ;;
2984 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2985   cache_file_option="--cache-file=${cache_file}" ;;
2986 *) # relative path
2987   cache_file_option="--cache-file=../${cache_file}" ;;
2988 esac
2989
2990 # Host dirs don't like to share a cache file either, horribly enough.
2991 # This seems to be due to autoconf 2.5x stupidity.
2992 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2993
2994 target_configargs="$target_configargs ${tbaseargs}"
2995
2996 # Passing a --with-cross-host argument lets the target libraries know
2997 # whether they are being built with a cross-compiler or being built
2998 # native.  However, it would be better to use other mechanisms to make the
2999 # sorts of decisions they want to make on this basis.  Please consider
3000 # this option to be deprecated.  FIXME.
3001 if test x${is_cross_compiler} = xyes ; then
3002   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3003 fi
3004
3005 # Special user-friendly check for native x86_64-linux build, if
3006 # multilib is not explicitly enabled.
3007 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3008   x86_64-*linux*:yes:$build:$build:)
3009     # Make sure we have a development environment that handles 32-bit
3010     dev64=no
3011     echo "int main () { return 0; }" > conftest.c
3012     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3013     if test $? = 0 ; then
3014       if test -s conftest || test -s conftest.exe ; then
3015         dev64=yes
3016       fi
3017     fi
3018     rm -f conftest*
3019     if test x${dev64} != xyes ; then
3020       AC_MSG_ERROR([I suspect your system does not have 32-bit development libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib.])
3021     fi
3022     ;;
3023 esac
3024
3025 # Default to --enable-multilib.
3026 if test x${enable_multilib} = x ; then
3027   target_configargs="--enable-multilib ${target_configargs}"
3028 fi
3029
3030 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3031 # changed from the earlier setting of with_newlib.
3032 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3033   target_configargs="--with-newlib ${target_configargs}"
3034 fi
3035
3036 # Different target subdirs use different values of certain variables
3037 # (notably CXX).  Worse, multilibs use *lots* of different values.
3038 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3039 # it doesn't automatically accept command-line overrides of them.
3040 # This means it's not safe for target subdirs to share a cache file,
3041 # which is disgusting, but there you have it.  Hopefully this can be
3042 # fixed in future.  It's still worthwhile to use a cache file for each
3043 # directory.  I think.
3044
3045 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3046 # We need to pass --target, as newer autoconf's requires consistency
3047 # for target_alias and gcc doesn't manage it consistently.
3048 target_configargs="--cache-file=./config.cache ${target_configargs}"
3049
3050 FLAGS_FOR_TARGET=
3051 case " $target_configdirs " in
3052  *" newlib "*)
3053   case " $target_configargs " in
3054   *" --with-newlib "*)
3055    case "$target" in
3056     *-cygwin*)
3057       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3058       ;;
3059    esac
3060
3061    # If we're not building GCC, don't discard standard headers.
3062    if test -d ${srcdir}/gcc; then
3063      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3064
3065      if test "${build}" != "${host}"; then
3066        # On Canadian crosses, CC_FOR_TARGET will have already been set
3067        # by `configure', so we won't have an opportunity to add -Bgcc/
3068        # to it.  This is right: we don't want to search that directory
3069        # for binaries, but we want the header files in there, so add
3070        # them explicitly.
3071        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3072
3073        # Someone might think of using the pre-installed headers on
3074        # Canadian crosses, in case the installed compiler is not fully
3075        # compatible with the compiler being built.  In this case, it
3076        # would be better to flag an error than risking having
3077        # incompatible object files being constructed.  We can't
3078        # guarantee that an error will be flagged, but let's hope the
3079        # compiler will do it, when presented with incompatible header
3080        # files.
3081      fi
3082    fi
3083
3084    case "${target}-${is_cross_compiler}" in
3085    i[[3456789]]86-*-linux*-no)
3086       # Here host == target, so we don't need to build gcc,
3087       # so we don't want to discard standard headers.
3088       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3089       ;;
3090    *)
3091       # If we're building newlib, use its generic headers last, but search
3092       # for any libc-related directories first (so make it the last -B
3093       # switch).
3094       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3095
3096       # If we're building libgloss, find the startup file, simulator library
3097       # and linker script.
3098       case " $target_configdirs " in
3099         *" libgloss "*)
3100         # Look for startup file, simulator library and maybe linker script.
3101         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3102         # Look for libnosys.a in case the target needs it.
3103         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3104         # Most targets have the linker script in the source directory.
3105         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3106         ;;
3107       esac
3108       ;;
3109    esac
3110    ;;
3111   esac
3112   ;;
3113 esac
3114
3115 case "$target" in
3116   x86_64-*mingw* | *-w64-mingw*)
3117   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3118   # however, use a symlink named 'mingw' in ${prefix} .
3119     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3120     ;;
3121   *-mingw*)
3122   # MinGW can't be handled as Cygwin above since it does not use newlib.
3123     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3124     ;;
3125 esac
3126
3127 # Allow the user to override the flags for
3128 # our build compiler if desired.
3129 if test x"${build}" = x"${host}" ; then
3130   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3131   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3132   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3133 fi
3134
3135 # On Canadian crosses, we'll be searching the right directories for
3136 # the previously-installed cross compiler, so don't bother to add
3137 # flags for directories within the install tree of the compiler
3138 # being built; programs in there won't even run.
3139 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3140   # Search for pre-installed headers if nothing else fits.
3141   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3142 fi
3143
3144 if test "x${use_gnu_ld}" = x &&
3145    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3146   # Arrange for us to find uninstalled linker scripts.
3147   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3148 fi
3149
3150 # Search for other target-specific linker scripts and such.
3151 case "${target}" in
3152   mep*)
3153     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3154     ;;
3155 esac
3156
3157 # Makefile fragments.
3158 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3159 do
3160   eval fragval=\$$frag
3161   if test $fragval != /dev/null; then
3162     eval $frag=${srcdir}/$fragval
3163   fi
3164 done
3165 AC_SUBST_FILE(host_makefile_frag)
3166 AC_SUBST_FILE(target_makefile_frag)
3167 AC_SUBST_FILE(alphaieee_frag)
3168 AC_SUBST_FILE(ospace_frag)
3169
3170 # Miscellanea: directories, flags, etc.
3171 AC_SUBST(RPATH_ENVVAR)
3172 AC_SUBST(GCC_SHLIB_SUBDIR)
3173 AC_SUBST(tooldir)
3174 AC_SUBST(build_tooldir)
3175 AC_SUBST(CONFIGURE_GDB_TK)
3176 AC_SUBST(GDB_TK)
3177 AC_SUBST(INSTALL_GDB_TK)
3178
3179 # Build module lists & subconfigure args.
3180 AC_SUBST(build_configargs)
3181 AC_SUBST(build_configdirs)
3182
3183 # Host module lists & subconfigure args.
3184 AC_SUBST(host_configargs)
3185 AC_SUBST(configdirs)
3186 AC_SUBST(target_configdirs)
3187
3188 # Target module lists & subconfigure args.
3189 AC_SUBST(target_configargs)
3190
3191
3192 # Build tools.
3193 AC_SUBST(AR_FOR_BUILD)
3194 AC_SUBST(AS_FOR_BUILD)
3195 AC_SUBST(CC_FOR_BUILD)
3196 AC_SUBST(CFLAGS_FOR_BUILD)
3197 AC_SUBST(CXXFLAGS_FOR_BUILD)
3198 AC_SUBST(CXX_FOR_BUILD)
3199 AC_SUBST(DLLTOOL_FOR_BUILD)
3200 AC_SUBST(GFORTRAN_FOR_BUILD)
3201 AC_SUBST(GOC_FOR_BUILD)
3202 AC_SUBST(LDFLAGS_FOR_BUILD)
3203 AC_SUBST(LD_FOR_BUILD)
3204 AC_SUBST(NM_FOR_BUILD)
3205 AC_SUBST(RANLIB_FOR_BUILD)
3206 AC_SUBST(WINDMC_FOR_BUILD)
3207 AC_SUBST(WINDRES_FOR_BUILD)
3208
3209 # Generate default definitions for YACC, M4, LEX and other programs that run
3210 # on the build machine.  These are used if the Makefile can't locate these
3211 # programs in objdir.
3212 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3213
3214 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3215 case " $build_configdirs " in
3216   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3217 esac
3218
3219 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3220 case " $build_configdirs " in
3221   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3222 esac
3223
3224 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3225 case " $build_configdirs " in
3226   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3227 esac
3228
3229 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3230 case " $build_configdirs " in
3231   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3232   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3233 esac
3234
3235 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3236 case " $build_configdirs " in
3237   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3238 esac
3239
3240 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3241 case " $build_configdirs " in
3242   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3243   *)
3244 changequote(,)
3245     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3246     # higher, else we use the "missing" dummy.
3247     if ${MAKEINFO} --version \
3248        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3249       :
3250     else
3251       MAKEINFO="$MISSING makeinfo"
3252     fi
3253     ;;
3254 changequote([,])
3255 esac
3256
3257 # FIXME: expect and dejagnu may become build tools?
3258
3259 AC_CHECK_PROGS(EXPECT, expect, expect)
3260 case " $configdirs " in
3261   *" expect "*)
3262     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3263     ;;
3264 esac
3265
3266 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3267 case " $configdirs " in
3268   *" dejagnu "*)
3269     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3270     ;;
3271 esac
3272
3273
3274 # Host tools.
3275 NCN_STRICT_CHECK_TOOLS(AR, ar)
3276 NCN_STRICT_CHECK_TOOLS(AS, as)
3277 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3278 NCN_STRICT_CHECK_TOOLS(LD, ld)
3279 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3280 NCN_STRICT_CHECK_TOOLS(NM, nm)
3281 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3282 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3283 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3284 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3285 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3286 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3287 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3288 AC_SUBST(CC)
3289 AC_SUBST(CXX)
3290 AC_SUBST(CFLAGS)
3291 AC_SUBST(CXXFLAGS)
3292
3293 # Target tools.
3294 AC_ARG_WITH([build-time-tools],
3295   [AS_HELP_STRING([--with-build-time-tools=PATH],
3296                   [use given path to find target tools during the build])],
3297   [case x"$withval" in
3298      x/*) ;;
3299      *)
3300        with_build_time_tools=
3301        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3302        ;;
3303    esac],
3304   [with_build_time_tools=])
3305
3306 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3307 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3308 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3309 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3310 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3311
3312 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3313 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3314 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3315 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3316 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3317 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3318 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3319 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3320 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3321 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3322 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3323 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3324 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3325
3326 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3327
3328 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3329 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3330 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3331 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3332 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3333                 [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],
3334                 c++)
3335 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3336                 [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],
3337                 c++)
3338 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3339 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3340 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3341                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3342 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3343                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3344 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3345 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3346 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3347 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3348 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3349 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3350 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3351 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3352 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3353 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3354
3355 AC_SUBST(FLAGS_FOR_TARGET)
3356 AC_SUBST(RAW_CXX_FOR_TARGET)
3357
3358 # Certain tools may need extra flags.
3359 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3360 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3361 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3362
3363 # When building target libraries, except in a Canadian cross, we use
3364 # the same toolchain as the compiler we just built.
3365 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3366 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3367 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3368 if test $host = $build; then
3369   case " $configdirs " in
3370     *" gcc "*)
3371       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3372       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3373       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3374       ;;
3375   esac
3376 fi
3377
3378 AC_SUBST(COMPILER_AS_FOR_TARGET)
3379 AC_SUBST(COMPILER_LD_FOR_TARGET)
3380 AC_SUBST(COMPILER_NM_FOR_TARGET)
3381
3382 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3383 AC_ARG_ENABLE(maintainer-mode,
3384 [AS_HELP_STRING([--enable-maintainer-mode],
3385                 [enable make rules and dependencies not useful
3386                  (and sometimes confusing) to the casual installer])],
3387       USE_MAINTAINER_MODE=$enableval,
3388       USE_MAINTAINER_MODE=no)
3389 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3390 AC_SUBST(MAINTAINER_MODE_TRUE)
3391 AC_SUBST(MAINTAINER_MODE_FALSE)
3392 if test "$USE_MAINTAINER_MODE" = yes; then
3393   MAINTAINER_MODE_TRUE=
3394   MAINTAINER_MODE_FALSE='#'
3395 else
3396   MAINTAINER_MODE_TRUE='#'
3397   MAINTAINER_MODE_FALSE=
3398 fi
3399 MAINT=$MAINTAINER_MODE_TRUE
3400 AC_SUBST(MAINT)dnl
3401
3402 # ---------------------
3403 # GCC bootstrap support
3404 # ---------------------
3405
3406 # Stage specific cflags for build.
3407 stage1_cflags="-g"
3408 case $build in
3409   vax-*-*)
3410     case ${GCC} in
3411       yes) stage1_cflags="-g -Wa,-J" ;;
3412       *) stage1_cflags="-g -J" ;;
3413     esac ;;
3414 esac
3415
3416 AC_SUBST(stage1_cflags)
3417
3418 # Enable --enable-checking in stage1 of the compiler.
3419 AC_ARG_ENABLE(stage1-checking,
3420 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3421                 [choose additional checking for stage1 of the compiler])],
3422 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3423 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3424   # For --disable-checking or implicit --enable-checking=release, avoid
3425   # setting --enable-checking=gc in the default stage1 checking for LTO
3426   # bootstraps.  See PR62077.
3427   case $BUILD_CONFIG in
3428     *lto*)
3429       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3430     *)
3431       stage1_checking=--enable-checking=yes,types;;
3432   esac
3433   if test "x$enable_checking" = x && \
3434      test -d ${srcdir}/gcc && \
3435      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3436     stage1_checking=--enable-checking=yes,types,extra
3437   fi
3438 else
3439   stage1_checking=--enable-checking=$enable_checking,types
3440 fi])
3441 AC_SUBST(stage1_checking)
3442
3443 # Enable -Werror in bootstrap stage2 and later.
3444 AC_ARG_ENABLE(werror,
3445 [AS_HELP_STRING([--enable-werror],
3446                 [enable -Werror in bootstrap stage2 and later])], [],
3447 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3448   enable_werror=yes
3449 else
3450   enable_werror=no
3451 fi])
3452 case ${enable_werror} in
3453   yes) stage2_werror_flag="--enable-werror-always" ;;
3454   *) stage2_werror_flag="" ;;
3455 esac
3456 AC_SUBST(stage2_werror_flag)
3457
3458 # Enable --enable-host-shared.
3459 AC_ARG_ENABLE(host-shared,
3460 [AS_HELP_STRING([--enable-host-shared],
3461                 [build host code as shared libraries])],
3462 [host_shared=$enableval], [host_shared=no])
3463 AC_SUBST(host_shared)
3464
3465 # PR jit/64780: Require the user to explicitly specify
3466 # --enable-host-shared if the jit is enabled, hinting
3467 # that they might want to do a separate configure/build of
3468 # the jit, to avoid users from slowing down the rest of the
3469 # compiler by enabling the jit.
3470 if test ${host_shared} = "no" ; then
3471   case "${enable_languages}" in
3472     *jit*)
3473       AC_MSG_ERROR([
3474 Enabling language "jit" requires --enable-host-shared.
3475
3476 --enable-host-shared typically slows the rest of the compiler down by
3477 a few %, so you must explicitly enable it.
3478
3479 If you want to build both the jit and the regular compiler, it is often
3480 best to do this via two separate configure/builds, in separate
3481 directories, to avoid imposing the performance cost of
3482 --enable-host-shared on the regular compiler.])
3483       ;;
3484     *)
3485       ;;
3486   esac
3487 fi
3488
3489 # Specify what files to not compare during bootstrap.
3490
3491 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3492 case "$target" in
3493   hppa*64*-*-hpux*) ;;
3494   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3495   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3496 esac
3497 AC_SUBST(compare_exclusions)
3498
3499 AC_CONFIG_FILES([Makefile],
3500   [sed "$extrasub_build" Makefile |
3501    sed "$extrasub_host" |
3502    sed "$extrasub_target" > mf$$
3503    mv -f mf$$ Makefile],
3504   [extrasub_build="$extrasub_build"
3505    extrasub_host="$extrasub_host"
3506    extrasub_target="$extrasub_target"])
3507 AC_OUTPUT