configure.ac

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