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 # libgcj represents the runtime libraries only used by gcj.
 146 libgcj="target-libffi \
 147         target-zlib \
 148         target-libjava"
 149
 150 # these libraries are built for the target environment, and are built after
 151 # the host libraries and the host tools (which may be a cross compiler)
 152 # Note that libiberty is not a target library.
 153 target_libraries="target-libgcc \
 154                 target-libbacktrace \
 155                 target-libgloss \
 156                 target-newlib \
 157                 target-libgomp \
 158                 target-libcilkrts \
 159                 target-liboffloadmic \
 160                 target-libatomic \
 161                 target-libitm \
 162                 target-libstdc++-v3 \
 163                 target-libsanitizer \
 164                 target-libvtv \
 165                 target-libmpx \
 166                 target-libssp \
 167                 target-libquadmath \
 168                 target-libgfortran \
 169                 target-boehm-gc \
 170                 ${libgcj} \
 171                 target-libobjc \
 172                 target-libada \
 173                 target-libgo"
 174
 175 # these tools are built using the target libraries, and are intended to
 176 # run only in the target environment
 177 #
 178 # note: any program that *uses* libraries that are in the "target_libraries"
 179 # list belongs in this list.
 180 #
 181 target_tools="target-rda"
 182
 183 ################################################################################
 184
 185 ## All tools belong in one of the four categories, and are assigned above
 186 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 187 ## is important because configure will choke if they ever get through.
 188 ## ${configdirs} is directories we build using the host tools.
 189 ## ${target_configdirs} is directories we build using the target tools.
 190 configdirs=`echo ${host_libs} ${host_tools}`
 191 target_configdirs=`echo ${target_libraries} ${target_tools}`
 192 build_configdirs=`echo ${build_libs} ${build_tools}`
 193
 194 m4_divert_text([PARSE_ARGS],
 195 [case $srcdir in
 196   *" "*)
 197 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 198     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 199 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 200     ;;
 201 esac
 202 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 203 ])
 204
 205 ################################################################################
 206
 207 srcname="gnu development package"
 208
 209 # This gets set non-empty for some net releases of packages.
 210 appdirs=""
 211
 212 # Define is_cross_compiler to save on calls to 'test'.
 213 is_cross_compiler=
 214 if test x"${host}" = x"${target}" ; then
 215   is_cross_compiler=no
 216 else
 217   is_cross_compiler=yes
 218 fi
 219
 220 # Find the build and target subdir names.
 221 GCC_TOPLEV_SUBDIRS
 222 # Be sure to cover against remnants of an in-tree build.
 223 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 224   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 225 Use a pristine source tree when building in a separate tree])
 226 fi
 227
 228 # Skipdirs are removed silently.
 229 skipdirs=
 230 # Noconfigdirs are removed loudly.
 231 noconfigdirs=""
 232
 233 use_gnu_ld=
 234 # Make sure we don't let GNU ld be added if we didn't want it.
 235 if test x$with_gnu_ld = xno ; then
 236   use_gnu_ld=no
 237   noconfigdirs="$noconfigdirs ld gold"
 238 fi
 239
 240 use_gnu_as=
 241 # Make sure we don't let GNU as be added if we didn't want it.
 242 if test x$with_gnu_as = xno ; then
 243   use_gnu_as=no
 244   noconfigdirs="$noconfigdirs gas"
 245 fi
 246
 247 use_included_zlib=
 248 AC_ARG_WITH(system-zlib,
 249 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
 250 # Make sure we don't let ZLIB be added if we didn't want it.
 251 if test x$with_system_zlib = xyes ; then
 252   use_included_zlib=no
 253   noconfigdirs="$noconfigdirs zlib"
 254 fi
 255
 256 # some tools are so dependent upon X11 that if we're not building with X,
 257 # it's not even worth trying to configure, much less build, that tool.
 258
 259 case ${with_x} in
 260   yes | "") ;; # the default value for this tree is that X11 is available
 261   no)
 262     skipdirs="${skipdirs} tk itcl libgui"
 263     # We won't be able to build gdbtk without X.
 264     enable_gdbtk=no
 265     ;;
 266   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 267 esac
 268
 269 # Some are only suitable for cross toolchains.
 270 # Remove these if host=target.
 271 cross_only="target-libgloss target-newlib target-opcodes"
 272
 273 case $is_cross_compiler in
 274   no) skipdirs="${skipdirs} ${cross_only}" ;;
 275 esac
 276
 277 # If both --with-headers and --with-libs are specified, default to
 278 # --without-newlib.
 279 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 280    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 281   if test x"${with_newlib}" = x ; then
 282     with_newlib=no
 283   fi
 284 fi
 285
 286 # Recognize --with-newlib/--without-newlib.
 287 case ${with_newlib} in
 288   no) skipdirs="${skipdirs} target-newlib" ;;
 289   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 290 esac
 291
 292 AC_ARG_ENABLE(as-accelerator-for,
 293 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
 294                 [build as offload target compiler.
 295                 Specify offload host triple by ARG])])
 296
 297 AC_ARG_ENABLE(offload-targets,
 298 [AS_HELP_STRING([--enable-offload-targets=LIST],
 299                 [enable offloading to devices from comma-separated LIST of
 300                 TARGET[=DIR]. Use optional path to find offload target compiler
 301                 during the build])],
 302 [
 303   if test x"$enable_offload_targets" = x; then
 304     AC_MSG_ERROR([no offload targets specified])
 305   fi
 306 ], [enable_offload_targets=])
 307
 308 # Handle --enable-gold, --enable-ld.
 309 # --disable-gold [--enable-ld]
 310 #     Build only ld.  Default option.
 311 # --enable-gold [--enable-ld]
 312 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 313 #     as "ld.bfd" and "ld".
 314 # --enable-gold=default [--enable-ld]
 315 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 316 #     install ld as "ld.bfd".
 317 # --enable-gold[=default] --disable-ld
 318 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 319 # --enable-gold --enable-ld=default
 320 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 321 #     and ld.bfd).
 322 #     In other words, ld is default
 323 # --enable-gold=default --enable-ld=default
 324 #     Error.
 325
 326 default_ld=
 327 AC_ARG_ENABLE(gold,
 328 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 329                 [build gold @<:@ARG={default,yes,no}@:>@])],
 330 ENABLE_GOLD=$enableval,
 331 ENABLE_GOLD=no)
 332 case "${ENABLE_GOLD}" in
 333   yes|default)
 334     # Check for ELF target.
 335     is_elf=no
 336     case "${target}" in
 337       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 338       | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 339       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 340       | *-*-solaris2* | *-*-nto* | *-*-nacl*)
 341         case "${target}" in
 342           *-*-linux*aout* | *-*-linux*oldld*)
 343             ;;
 344           *)
 345             is_elf=yes
 346             ;;
 347         esac
 348     esac
 349
 350     if test "$is_elf" = "yes"; then
 351       # Check for target supported by gold.
 352       case "${target}" in
 353         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
 354         | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
 355           configdirs="$configdirs gold"
 356           if test x${ENABLE_GOLD} = xdefault; then
 357             default_ld=gold
 358           fi
 359           ENABLE_GOLD=yes
 360           ;;
 361       esac
 362     fi
 363     ;;
 364   no)
 365     ;;
 366   *)
 367     AC_MSG_ERROR([invalid --enable-gold argument])
 368     ;;
 369 esac
 370
 371 AC_ARG_ENABLE(ld,
 372 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 373                 [build ld @<:@ARG={default,yes,no}@:>@])],
 374 ENABLE_LD=$enableval,
 375 ENABLE_LD=yes)
 376
 377 case "${ENABLE_LD}" in
 378   default)
 379     if test x${default_ld} != x; then
 380       AC_MSG_ERROR([either gold or ld can be the default ld])
 381     fi
 382     ;;
 383   yes)
 384     ;;
 385   no)
 386     if test x${ENABLE_GOLD} != xyes; then
 387       AC_MSG_WARN([neither ld nor gold are enabled])
 388     fi
 389     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 390     ;;
 391   *)
 392     AC_MSG_ERROR([invalid --enable-ld argument])
 393     ;;
 394 esac
 395
 396 # PR gas/19109
 397 # Decide the default method for compressing debug sections.
 398 # Provide a configure time option to override our default.
 399 AC_ARG_ENABLE(compressed_debug_sections,
 400 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
 401                 [Enable compressed debug sections for gas, gold or ld by
 402                  default])],
 403 [
 404   if test x"$enable_compressed_debug_sections" = xyes; then
 405     AC_MSG_ERROR([no program with compressed debug sections specified])
 406   fi
 407 ], [enable_compressed_debug_sections=])
 408
 409 # Configure extra directories which are host specific
 410
 411 case "${host}" in
 412   *-cygwin*)
 413     configdirs="$configdirs libtermcap" ;;
 414 esac
 415
 416 # A target can indicate whether a language isn't supported for some reason.
 417 # Only spaces may be used in this macro; not newlines or tabs.
 418 unsupported_languages=
 419
 420 # Remove more programs from consideration, based on the host or
 421 # target this usually means that a port of the program doesn't
 422 # exist yet.
 423
 424 case "${host}" in
 425   i[[3456789]]86-*-msdosdjgpp*)
 426     noconfigdirs="$noconfigdirs tcl tk itcl"
 427     ;;
 428 esac
 429
 430
 431 AC_ARG_ENABLE(libquadmath,
 432 AS_HELP_STRING([--disable-libquadmath],
 433   [do not build libquadmath directory]),
 434 ENABLE_LIBQUADMATH=$enableval,
 435 ENABLE_LIBQUADMATH=yes)
 436 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 437   noconfigdirs="$noconfigdirs target-libquadmath"
 438 fi
 439
 440
 441 AC_ARG_ENABLE(libquadmath-support,
 442 AS_HELP_STRING([--disable-libquadmath-support],
 443   [disable libquadmath support for Fortran]),
 444 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 445 ENABLE_LIBQUADMATH_SUPPORT=yes)
 446 enable_libquadmath_support=
 447 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 448   enable_libquadmath_support=no
 449 fi
 450
 451
 452 AC_ARG_ENABLE(libada,
 453 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 454 ENABLE_LIBADA=$enableval,
 455 ENABLE_LIBADA=yes)
 456 if test "${ENABLE_LIBADA}" != "yes" ; then
 457   noconfigdirs="$noconfigdirs gnattools"
 458 fi
 459
 460 AC_ARG_ENABLE(libssp,
 461 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 462 ENABLE_LIBSSP=$enableval,
 463 ENABLE_LIBSSP=yes)
 464
 465 AC_ARG_ENABLE(libstdcxx,
 466 AS_HELP_STRING([--disable-libstdcxx],
 467   [do not build libstdc++-v3 directory]),
 468 ENABLE_LIBSTDCXX=$enableval,
 469 ENABLE_LIBSTDCXX=default)
 470 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
 471   noconfigdirs="$noconfigdirs target-libstdc++-v3"
 472 fi]
 473
 474 # If this is accelerator compiler and its target is intelmic we enable
 475 # target liboffloadmic by default.  If this is compiler with offloading
 476 # for intelmic we enable host liboffloadmic by default.  Otherwise
 477 # liboffloadmic is disabled by default.
 478 AC_ARG_ENABLE([liboffloadmic],
 479 AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
 480                [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
 481 [case "$enableval" in
 482   no | host | target)
 483     enable_liboffloadmic=$enableval ;;
 484   *)
 485     AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
 486 esac],
 487 [if test x"$enable_as_accelerator_for" != x; then
 488   case "${target}" in
 489     *-intelmic-* | *-intelmicemul-*)
 490       enable_liboffloadmic=target
 491       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
 492       ;;
 493     *)
 494       enable_liboffloadmic=no
 495       ;;
 496   esac
 497 else
 498   case "${enable_offload_targets}" in
 499     *-intelmic-* | *-intelmicemul-*)
 500       enable_liboffloadmic=host
 501       extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
 502       ;;
 503     *)
 504       enable_liboffloadmic=no
 505       ;;
 506     esac
 507 fi])
 508 AC_SUBST(extra_liboffloadmic_configure_flags)
 509
 510 # Save it here so that, even in case of --enable-libgcj, if the Java
 511 # front-end isn't enabled, we still get libgcj disabled.
 512 libgcj_saved=$libgcj
 513 case $enable_libgcj in
 514 yes)
 515   # If we reset it here, it won't get added to noconfigdirs in the
 516   # target-specific build rules, so it will be forcibly enabled
 517   # (unless the Java language itself isn't enabled).
 518   libgcj=
 519   ;;
 520 no)
 521   # Make sure we get it printed in the list of not supported target libs.
 522   # Don't disable libffi, though, other languages use it.
 523   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 524   # Clear libgcj_saved so that even if java is enabled libffi won't be
 525   # built.
 526   libgcj_saved=
 527   ;;
 528 esac
 529
 530 AC_ARG_ENABLE(static-libjava,
 531 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 532                 [build static libjava @<:@default=no@:>@])],
 533 ENABLE_STATIC_LIBJAVA=$enableval,
 534 ENABLE_STATIC_LIBJAVA=no)
 535 enable_static_libjava=
 536 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 537   enable_static_libjava=yes
 538 fi
 539
 540 if test x$enable_static_libjava != xyes ; then
 541   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 542 fi
 543 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 544
 545 # Enable libgomp by default on hosted POSIX systems, and a few others.
 546 if test x$enable_libgomp = x ; then
 547     case "${target}" in
 548     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 549         ;;
 550     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 551         ;;
 552     *-*-solaris2* | *-*-hpux11*)
 553         ;;
 554     *-*-darwin* | *-*-aix*)
 555         ;;
 556     nvptx*-*-*)
 557         ;;
 558     *)
 559         noconfigdirs="$noconfigdirs target-libgomp"
 560         ;;
 561     esac
 562 fi
 563
 564 # Disable libatomic on unsupported systems.
 565 if test -d ${srcdir}/libatomic; then
 566     if test x$enable_libatomic = x; then
 567         AC_MSG_CHECKING([for libatomic support])
 568         if (srcdir=${srcdir}/libatomic; \
 569                 . ${srcdir}/configure.tgt; \
 570                 test -n "$UNSUPPORTED")
 571         then
 572             AC_MSG_RESULT([no])
 573             noconfigdirs="$noconfigdirs target-libatomic"
 574         else
 575             AC_MSG_RESULT([yes])
 576         fi
 577     fi
 578 fi
 579
 580 # Disable libcilkrts on unsupported systems.
 581 if test -d ${srcdir}/libcilkrts; then
 582     if test x$enable_libcilkrts = x; then
 583         AC_MSG_CHECKING([for libcilkrts support])
 584         if (srcdir=${srcdir}/libcilkrts; \
 585                 . ${srcdir}/configure.tgt; \
 586                 test -n "$UNSUPPORTED")
 587         then
 588             AC_MSG_RESULT([no])
 589             noconfigdirs="$noconfigdirs target-libcilkrts"
 590         else
 591             AC_MSG_RESULT([yes])
 592         fi
 593     fi
 594 fi
 595
 596 # Disable liboffloadmic on unsupported systems.
 597 if test -d ${srcdir}/liboffloadmic; then
 598     if test x$enable_liboffloadmic != xno; then
 599         AC_MSG_CHECKING([for liboffloadmic support])
 600         if (srcdir=${srcdir}/liboffloadmic; \
 601                 . ${srcdir}/configure.tgt; \
 602                 test -n "$UNSUPPORTED")
 603         then
 604             AC_MSG_RESULT([no])
 605             noconfigdirs="$noconfigdirs target-liboffloadmic"
 606         else
 607             AC_MSG_RESULT([yes])
 608         fi
 609     fi
 610 fi
 611
 612 # Disable libitm on unsupported systems.
 613 if test -d ${srcdir}/libitm; then
 614     if test x$enable_libitm = x; then
 615         AC_MSG_CHECKING([for libitm support])
 616         if (srcdir=${srcdir}/libitm; \
 617                 . ${srcdir}/configure.tgt; \
 618                 test -n "$UNSUPPORTED")
 619         then
 620             AC_MSG_RESULT([no])
 621             noconfigdirs="$noconfigdirs target-libitm"
 622         else
 623             AC_MSG_RESULT([yes])
 624         fi
 625     fi
 626 fi
 627
 628 # Disable libsanitizer on unsupported systems.
 629 if test -d ${srcdir}/libsanitizer; then
 630     if test x$enable_libsanitizer = x; then
 631         AC_MSG_CHECKING([for libsanitizer support])
 632         if (srcdir=${srcdir}/libsanitizer; \
 633                 . ${srcdir}/configure.tgt; \
 634                 test -n "$UNSUPPORTED")
 635         then
 636             AC_MSG_RESULT([no])
 637             noconfigdirs="$noconfigdirs target-libsanitizer"
 638         else
 639             AC_MSG_RESULT([yes])
 640         fi
 641     fi
 642 fi
 643
 644 # Disable libvtv on unsupported systems.
 645 if test -d ${srcdir}/libvtv; then
 646     if test x$enable_libvtv = x; then
 647         AC_MSG_CHECKING([for libvtv support])
 648         if (srcdir=${srcdir}/libvtv; \
 649                 . ${srcdir}/configure.tgt; \
 650                 test "$VTV_SUPPORTED" != "yes")
 651         then
 652             AC_MSG_RESULT([no])
 653             noconfigdirs="$noconfigdirs target-libvtv"
 654         else
 655             AC_MSG_RESULT([yes])
 656         fi
 657     fi
 658 fi
 659
 660
 661 # Enable libmpx on supported systems by request.
 662 if test -d ${srcdir}/libmpx; then
 663     if test x$enable_libmpx = x; then
 664        AC_MSG_CHECKING([for libmpx support])
 665        if (srcdir=${srcdir}/libmpx; \
 666                . ${srcdir}/configure.tgt; \
 667                test "$LIBMPX_SUPPORTED" != "yes")
 668        then
 669            AC_MSG_RESULT([no])
 670            noconfigdirs="$noconfigdirs target-libmpx"
 671        else
 672            AC_MSG_RESULT([yes])
 673        fi
 674     fi
 675 fi
 676
 677
 678
 679 # Disable libquadmath for some systems.
 680 case "${target}" in
 681   avr-*-*)
 682     noconfigdirs="$noconfigdirs target-libquadmath"
 683     ;;
 684   # libquadmath is unused on AIX and libquadmath build process use of
 685   # LD_LIBRARY_PATH can break AIX bootstrap.
 686   powerpc-*-aix* | rs6000-*-aix*)
 687     noconfigdirs="$noconfigdirs target-libquadmath"
 688     ;;
 689 esac
 690
 691 # Disable libssp for some systems.
 692 case "${target}" in
 693   avr-*-*)
 694     # No hosted I/O support.
 695     noconfigdirs="$noconfigdirs target-libssp"
 696     ;;
 697   powerpc-*-aix* | rs6000-*-aix*)
 698     noconfigdirs="$noconfigdirs target-libssp"
 699     ;;
 700   rl78-*-*)
 701     # libssp uses a misaligned load to trigger a fault, but the RL78
 702     # doesn't fault for those - instead, it gives a build-time error
 703     # for explicit misaligned loads.
 704     noconfigdirs="$noconfigdirs target-libssp"
 705     ;;
 706   visium-*-*)
 707     # No hosted I/O support.
 708     noconfigdirs="$noconfigdirs target-libssp"
 709     ;;
 710 esac
 711
 712 # Disable libstdc++-v3 for some systems.
 713 # Allow user to override this if they pass --enable-libstdc++-v3
 714 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
 715   case "${target}" in
 716     *-*-vxworks*)
 717       # VxWorks uses the Dinkumware C++ library.
 718       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 719       ;;
 720     arm*-wince-pe*)
 721       # the C++ libraries don't build on top of CE's C libraries
 722       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 723       ;;
 724     avr-*-*)
 725       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 726       ;;
 727     ft32-*-*)
 728       noconfigdirs="$noconfigdirs target-libstdc++-v3"
 729       ;;
 730   esac
 731 fi
 732
 733 # Disable Fortran for some systems.
 734 case "${target}" in
 735   mmix-*-*)
 736     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 737     unsupported_languages="$unsupported_languages fortran"
 738     ;;
 739 esac
 740
 741 # Disable Java if libffi is not supported.
 742 case "${target}" in
 743   aarch64-*-*)
 744     ;;
 745   alpha*-*-*)
 746     ;;
 747   arm*-*-*)
 748     ;;
 749   cris-*-*)
 750     ;;
 751   frv-*-*)
 752     ;;
 753   hppa*-*-linux*)
 754     ;;
 755   hppa*-*-hpux*)
 756     ;;
 757   i?86-*-*)
 758     ;;
 759   ia64*-*-*)
 760     ;;
 761   m32r*-*-*)
 762     ;;
 763   m68k-*-*)
 764     ;;
 765   mips*-*-rtems*)
 766     ;;
 767   mips*-*-linux*)
 768     ;;
 769   powerpc*-*-linux*)
 770     ;;
 771   powerpc-*-darwin*)
 772     ;;
 773   powerpc-*-aix* | rs6000-*-aix*)
 774     ;;
 775   powerpc-*-freebsd*)
 776     ;;
 777   powerpc64-*-freebsd*)
 778     ;;
 779   powerpc*-*-rtems*)
 780     ;;
 781   s390-*-* | s390x-*-*)
 782     ;;
 783   sh-*-* | sh[[34]]*-*-*)
 784     ;;
 785   sparc*-*-*)
 786     ;;
 787   x86_64-*-*)
 788     ;;
 789   *-*-*)
 790     unsupported_languages="$unsupported_languages java"
 791     ;;
 792 esac
 793
 794 # Disable Java, libgcj or related libraries for some systems.
 795 case "${target}" in
 796   powerpc-*-darwin*)
 797     ;;
 798   i[[3456789]]86-*-darwin*)
 799     ;;
 800   x86_64-*-darwin[[912]]*)
 801     ;;
 802   *-*-darwin*)
 803     noconfigdirs="$noconfigdirs ${libgcj}"
 804     ;;
 805   *-*-netware*)
 806     noconfigdirs="$noconfigdirs ${libgcj}"
 807     ;;
 808   *-*-rtems*)
 809     noconfigdirs="$noconfigdirs ${libgcj}"
 810     ;;
 811   *-*-tpf*)
 812     noconfigdirs="$noconfigdirs ${libgcj}"
 813     ;;
 814   *-*-uclinux*)
 815     noconfigdirs="$noconfigdirs ${libgcj}"
 816     ;;
 817   *-*-vxworks*)
 818     noconfigdirs="$noconfigdirs ${libgcj}"
 819     ;;
 820   alpha*-*-*vms*)
 821     noconfigdirs="$noconfigdirs ${libgcj}"
 822     ;;
 823   arm*-*-freebsd*)
 824     noconfigdirs="$noconfigdirs ${libgcj}"
 825     ;;
 826   arm-wince-pe)
 827     noconfigdirs="$noconfigdirs ${libgcj}"
 828     ;;
 829   arm*-*-symbianelf*)
 830     noconfigdirs="$noconfigdirs ${libgcj}"
 831     ;;
 832   bfin-*-*)
 833     noconfigdirs="$noconfigdirs target-boehm-gc"
 834     ;;
 835   cris-*-* | crisv32-*-*)
 836     unsupported_languages="$unsupported_languages java"
 837     case "${target}" in
 838       *-*-linux*)
 839         ;;
 840       *) # See PR46792 regarding target-libffi.
 841         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 842     esac
 843     ;;
 844   hppa*64*-*-linux*)
 845     # In this case, it's because the hppa64-linux target is for
 846     # the kernel only at this point and has no libc, and thus no
 847     # headers, crt*.o, etc., all of which are needed by these.
 848     unsupported_languages="$unsupported_languages java"
 849     ;;
 850   hppa*64*-*-hpux*)
 851     noconfigdirs="$noconfigdirs ${libgcj}"
 852     ;;
 853   hppa*-hp-hpux11*)
 854     ;;
 855   hppa*-*-hpux*)
 856     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 857     # build on HP-UX 10.20.
 858     noconfigdirs="$noconfigdirs ${libgcj}"
 859     ;;
 860   ia64*-*-*vms*)
 861     noconfigdirs="$noconfigdirs ${libgcj}"
 862     ;;
 863   i[[3456789]]86-w64-mingw*)
 864     noconfigdirs="$noconfigdirs ${libgcj}"
 865     ;;
 866   i[[3456789]]86-*-mingw*)
 867     noconfigdirs="$noconfigdirs ${libgcj}"
 868     ;;
 869   x86_64-*-mingw*)
 870     noconfigdirs="$noconfigdirs ${libgcj}"
 871     ;;
 872   mmix-*-*)
 873     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 874     ;;
 875   powerpc-*-aix*)
 876     # copied from rs6000-*-* entry
 877     noconfigdirs="$noconfigdirs ${libgcj}"
 878     ;;
 879   rs6000-*-aix*)
 880     noconfigdirs="$noconfigdirs ${libgcj}"
 881     ;;
 882   ft32-*-*)
 883     noconfigdirs="$noconfigdirs ${libgcj}"
 884     ;;
 885   *-*-lynxos*)
 886     noconfigdirs="$noconfigdirs ${libgcj}"
 887     ;;
 888 esac
 889
 890 # Disable the go frontend on systems where it is known to not work. Please keep
 891 # this in sync with contrib/config-list.mk.
 892 case "${target}" in
 893 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 894     unsupported_languages="$unsupported_languages go"
 895     ;;
 896 esac
 897
 898 # Disable libgo for some systems where it is known to not work.
 899 # For testing, you can easily override this with --enable-libgo.
 900 if test x$enable_libgo = x; then
 901     case "${target}" in
 902     *-*-darwin*)
 903         # PR 46986
 904         noconfigdirs="$noconfigdirs target-libgo"
 905         ;;
 906     *-*-cygwin* | *-*-mingw*)
 907         noconfigdirs="$noconfigdirs target-libgo"
 908         ;;
 909     *-*-aix*)
 910         noconfigdirs="$noconfigdirs target-libgo"
 911         ;;
 912     esac
 913 fi
 914
 915 # Default libgloss CPU subdirectory.
 916 libgloss_dir="$target_cpu"
 917
 918 case "${target}" in
 919   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 920     libgloss_dir=wince
 921     ;;
 922   aarch64*-*-* )
 923     libgloss_dir=aarch64
 924     ;;
 925   arm*-*-*)
 926     libgloss_dir=arm
 927     ;;
 928   cris-*-* | crisv32-*-*)
 929     libgloss_dir=cris
 930     ;;
 931   hppa*-*-*)
 932     libgloss_dir=pa
 933     ;;
 934   i[[3456789]]86-*-*)
 935     libgloss_dir=i386
 936     ;;
 937   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 938     libgloss_dir=m68hc11
 939     ;;
 940   m68*-*-* | fido-*-*)
 941     libgloss_dir=m68k
 942     ;;
 943   mips*-*-*)
 944     libgloss_dir=mips
 945     ;;
 946   powerpc*-*-*)
 947     libgloss_dir=rs6000
 948     ;;
 949   sparc*-*-*)
 950     libgloss_dir=sparc
 951     ;;
 952 esac
 953
 954 # Disable newlib and libgloss for various target OSes.
 955 case "${target}" in
 956   alpha*-dec-osf*)
 957     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 958     ;;
 959   i[[3456789]]86-*-linux*)
 960     # This section makes it possible to build newlib natively on linux.
 961     # If we are using a cross compiler then don't configure newlib.
 962     if test x${is_cross_compiler} != xno ; then
 963       noconfigdirs="$noconfigdirs target-newlib"
 964     fi
 965     noconfigdirs="$noconfigdirs target-libgloss"
 966     # If we are not using a cross compiler, do configure newlib.
 967     # Note however, that newlib will only be configured in this situation
 968     # if the --with-newlib option has been given, because otherwise
 969     # 'target-newlib' will appear in skipdirs.
 970     ;;
 971   i[[3456789]]86-*-rdos*)
 972     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 973     ;;
 974   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 975     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 976     ;;
 977   sparc-*-sunos4*)
 978     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 979     ;;
 980   *-*-aix*)
 981     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 982     ;;
 983   *-*-beos*)
 984     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 985     ;;
 986   *-*-chorusos)
 987     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 988     ;;
 989   *-*-dragonfly*)
 990     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 991     ;;
 992   *-*-freebsd*)
 993     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 994     ;;
 995   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 996     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 997     ;;
 998   *-*-lynxos*)
 999     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1000     ;;
1001   *-*-mingw*)
1002     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1003     ;;
1004   *-*-netbsd*)
1005     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1006     ;;
1007   *-*-netware*)
1008     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1009     ;;
1010   *-*-tpf*)
1011     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1012     ;;
1013   *-*-uclinux*)
1014     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1015     ;;
1016   *-*-vxworks*)
1017     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1018     ;;
1019 esac
1020
1021 case "${target}" in
1022   *-*-chorusos)
1023     ;;
1024   aarch64-*-darwin*)
1025     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1026     noconfigdirs="$noconfigdirs sim target-rda"
1027     ;;
1028   arm-*-darwin*)
1029     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1030     noconfigdirs="$noconfigdirs sim target-rda"
1031     ;;
1032   powerpc-*-darwin*)
1033     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1034     noconfigdirs="$noconfigdirs sim target-rda"
1035     ;;
1036   i[[3456789]]86-*-darwin*)
1037     noconfigdirs="$noconfigdirs ld gprof"
1038     noconfigdirs="$noconfigdirs sim target-rda"
1039     ;;
1040   x86_64-*-darwin[[912]]*)
1041     noconfigdirs="$noconfigdirs ld gas gprof"
1042     noconfigdirs="$noconfigdirs sim target-rda"
1043     ;;
1044   *-*-darwin*)
1045     noconfigdirs="$noconfigdirs ld gas gdb gprof"
1046     noconfigdirs="$noconfigdirs sim target-rda"
1047     ;;
1048   *-*-dragonfly*)
1049     ;;
1050   *-*-freebsd*)
1051     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
1052         && test -f /usr/local/include/gmp.h; then
1053       with_gmp=/usr/local
1054     fi
1055     ;;
1056   *-*-kaos*)
1057     # Remove unsupported stuff on all kaOS configurations.
1058     noconfigdirs="$noconfigdirs target-libgloss"
1059     ;;
1060   *-*-netbsd*)
1061     ;;
1062   *-*-netware*)
1063     ;;
1064   *-*-rtems*)
1065     noconfigdirs="$noconfigdirs target-libgloss"
1066     # this is not caught below because this stanza matches earlier
1067     case $target in
1068       or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
1069     esac
1070     ;;
1071     # The tpf target doesn't support gdb yet.
1072   *-*-tpf*)
1073     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1074     ;;
1075   *-*-uclinux*)
1076     noconfigdirs="$noconfigdirs target-rda"
1077     ;;
1078   *-*-vxworks*)
1079     ;;
1080   alpha*-dec-osf*)
1081     # ld works, but does not support shared libraries.
1082     # gas doesn't generate exception information.
1083     noconfigdirs="$noconfigdirs gas ld"
1084     ;;
1085   alpha*-*-*vms*)
1086     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1087     ;;
1088   alpha*-*-*)
1089     # newlib is not 64 bit ready
1090     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1091     ;;
1092   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1093     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1094     ;;
1095   arc-*-*|arceb-*-*)
1096     noconfigdirs="$noconfigdirs target-libgloss"
1097     ;;
1098   arm-*-pe*)
1099     noconfigdirs="$noconfigdirs target-libgloss"
1100     ;;
1101   arm-*-riscix*)
1102     noconfigdirs="$noconfigdirs ld target-libgloss"
1103     ;;
1104   avr-*-rtems*)
1105     ;;
1106   avr-*-*)
1107     if test x${with_avrlibc} != xno; then
1108       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1109     fi
1110     ;;
1111   c4x-*-* | tic4x-*-*)
1112     noconfigdirs="$noconfigdirs target-libgloss"
1113     ;;
1114   tic54x-*-*)
1115     noconfigdirs="$noconfigdirs target-libgloss gdb"
1116     ;;
1117   d10v-*-*)
1118     noconfigdirs="$noconfigdirs target-libgloss"
1119     ;;
1120   d30v-*-*)
1121     noconfigdirs="$noconfigdirs gdb"
1122     ;;
1123   fr30-*-elf*)
1124     noconfigdirs="$noconfigdirs gdb"
1125     ;;
1126   ft32-*-*)
1127     noconfigdirs="$noconfigdirs target-rda gprof"
1128     ;;
1129   moxie-*-*)
1130     noconfigdirs="$noconfigdirs"
1131     ;;
1132   h8300*-*-*)
1133     noconfigdirs="$noconfigdirs target-libgloss"
1134     ;;
1135   h8500-*-*)
1136     noconfigdirs="$noconfigdirs target-libgloss"
1137     ;;
1138   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1139     ;;
1140   hppa*64*-*-hpux*)
1141     noconfigdirs="$noconfigdirs gdb"
1142     ;;
1143   hppa*-*-hpux11*)
1144     noconfigdirs="$noconfigdirs gdb ld"
1145     ;;
1146   hppa*64*-*-linux*)
1147     ;;
1148   hppa*-*-linux*)
1149     ;;
1150   hppa*-*-*elf* | \
1151   hppa*-*-lites* | \
1152   hppa*-*-openbsd* | \
1153   hppa*64*-*-*)
1154     ;;
1155   hppa*-*-pro*)
1156     ;;
1157   hppa*-*-*)
1158     noconfigdirs="$noconfigdirs ld"
1159     ;;
1160   i960-*-*)
1161     noconfigdirs="$noconfigdirs gdb"
1162     ;;
1163   ia64*-*-elf*)
1164     # No gdb support yet.
1165     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1166     ;;
1167   ia64*-**-hpux*)
1168     # No ld support yet.
1169     noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1170     ;;
1171   ia64*-*-*vms*)
1172     # No ld support yet.
1173     noconfigdirs="$noconfigdirs libgui itcl ld"
1174     ;;
1175   i[[3456789]]86-w64-mingw*)
1176     ;;
1177   i[[3456789]]86-*-mingw*)
1178     target_configdirs="$target_configdirs target-winsup"
1179     ;;
1180   *-*-cygwin*)
1181     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1182     noconfigdirs="$noconfigdirs target-libgloss"
1183     # always build newlib if winsup directory is present.
1184     if test -d "$srcdir/winsup/cygwin"; then
1185       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1186     elif test -d "$srcdir/newlib"; then
1187       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1188     fi
1189     ;;
1190   i[[3456789]]86-*-pe)
1191     noconfigdirs="$noconfigdirs target-libgloss"
1192     ;;
1193   i[[3456789]]86-*-sco3.2v5*)
1194     # The linker does not yet know about weak symbols in COFF,
1195     # and is not configured to handle mixed ELF and COFF.
1196     noconfigdirs="$noconfigdirs ld target-libgloss"
1197     ;;
1198   i[[3456789]]86-*-sco*)
1199     noconfigdirs="$noconfigdirs gprof target-libgloss"
1200     ;;
1201   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1202     noconfigdirs="$noconfigdirs target-libgloss"
1203     ;;
1204   i[[3456789]]86-*-sysv4*)
1205     noconfigdirs="$noconfigdirs target-libgloss"
1206     ;;
1207   i[[3456789]]86-*-beos*)
1208     noconfigdirs="$noconfigdirs gdb"
1209     ;;
1210   i[[3456789]]86-*-rdos*)
1211     noconfigdirs="$noconfigdirs gdb"
1212     ;;
1213   mmix-*-*)
1214     noconfigdirs="$noconfigdirs gdb"
1215     ;;
1216   mt-*-*)
1217     noconfigdirs="$noconfigdirs sim"
1218     ;;
1219   powerpc-*-aix*)
1220     # copied from rs6000-*-* entry
1221     noconfigdirs="$noconfigdirs gprof"
1222     ;;
1223   powerpc*-*-winnt* | powerpc*-*-pe*)
1224     target_configdirs="$target_configdirs target-winsup"
1225     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1226     # always build newlib.
1227     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1228     ;;
1229     # This is temporary until we can link against shared libraries
1230   powerpcle-*-solaris*)
1231     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1232     ;;
1233   powerpc-*-beos*)
1234     noconfigdirs="$noconfigdirs gdb"
1235     ;;
1236   rs6000-*-lynxos*)
1237     noconfigdirs="$noconfigdirs gprof"
1238     ;;
1239   rs6000-*-aix*)
1240     noconfigdirs="$noconfigdirs gprof"
1241     ;;
1242   rs6000-*-*)
1243     noconfigdirs="$noconfigdirs gprof"
1244     ;;
1245   m68k-apollo-*)
1246     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1247     ;;
1248   microblaze*)
1249     noconfigdirs="$noconfigdirs gprof"
1250     ;;
1251   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1252     if test x$with_newlib = xyes; then
1253       noconfigdirs="$noconfigdirs gprof"
1254     fi
1255     ;;
1256   mips*-*-irix5*)
1257     noconfigdirs="$noconfigdirs gprof target-libgloss"
1258     ;;
1259   mips*-*-irix6*)
1260     noconfigdirs="$noconfigdirs gprof target-libgloss"
1261     ;;
1262   mips*-*-bsd*)
1263     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1264     ;;
1265   mips*-*-linux*)
1266     ;;
1267   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1268   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1269     noconfigdirs="$noconfigdirs ld gas gprof"
1270     ;;
1271   mips*-*-*)
1272     noconfigdirs="$noconfigdirs gprof"
1273     ;;
1274   nds32*-*-*)
1275     noconfigdirs="$noconfigdirs gdb"
1276     ;;
1277   nvptx*-*-*)
1278     noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1279     ;;
1280   or1k*-*-*)
1281     noconfigdirs="$noconfigdirs gdb"
1282     ;;
1283   sh-*-*)
1284     case "${target}" in
1285       sh*-*-elf)
1286          ;;
1287       *)
1288          noconfigdirs="$noconfigdirs target-libgloss" ;;
1289     esac
1290     ;;
1291   sparc-*-sunos4*)
1292     if test x${is_cross_compiler} = xno ; then
1293            use_gnu_ld=no
1294     fi
1295     ;;
1296   tic6x-*-*)
1297     noconfigdirs="$noconfigdirs sim"
1298     ;;
1299   tilepro*-*-* | tilegx*-*-*)
1300     noconfigdirs="$noconfigdirs sim"
1301     ;;
1302   v810-*-*)
1303     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1304     ;;
1305   vax-*-*)
1306     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1307     ;;
1308 esac
1309
1310 # If we aren't building newlib, then don't build libgloss, since libgloss
1311 # depends upon some newlib header files.
1312 case "${noconfigdirs}" in
1313   *target-libgloss*) ;;
1314   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1315 esac
1316
1317 # Work in distributions that contain no compiler tools, like Autoconf.
1318 host_makefile_frag=/dev/null
1319 if test -d ${srcdir}/config ; then
1320 case "${host}" in
1321   i[[3456789]]86-*-msdosdjgpp*)
1322     host_makefile_frag="config/mh-djgpp"
1323     ;;
1324   *-cygwin*)
1325     ACX_CHECK_CYGWIN_CAT_WORKS
1326     host_makefile_frag="config/mh-cygwin"
1327     ;;
1328   *-mingw*)
1329     host_makefile_frag="config/mh-mingw"
1330     ;;
1331   alpha*-linux*)
1332     host_makefile_frag="config/mh-alpha-linux"
1333     ;;
1334   hppa*-hp-hpux10*)
1335     host_makefile_frag="config/mh-pa-hpux10"
1336     ;;
1337   hppa*-hp-hpux*)
1338     host_makefile_frag="config/mh-pa"
1339     ;;
1340   hppa*-*)
1341     host_makefile_frag="config/mh-pa"
1342     ;;
1343   *-*-darwin*)
1344     host_makefile_frag="config/mh-darwin"
1345     ;;
1346   powerpc-*-aix*)
1347     host_makefile_frag="config/mh-ppc-aix"
1348     ;;
1349   rs6000-*-aix*)
1350     host_makefile_frag="config/mh-ppc-aix"
1351     ;;
1352 esac
1353 fi
1354
1355 if test "${build}" != "${host}" ; then
1356   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1357   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1358   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1359   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1360   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1361   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1362   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1363   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1364   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1365   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1366   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1367   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1368   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1369 else
1370   AR_FOR_BUILD="\$(AR)"
1371   AS_FOR_BUILD="\$(AS)"
1372   CC_FOR_BUILD="\$(CC)"
1373   CXX_FOR_BUILD="\$(CXX)"
1374   GCJ_FOR_BUILD="\$(GCJ)"
1375   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1376   GOC_FOR_BUILD="\$(GOC)"
1377   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1378   LD_FOR_BUILD="\$(LD)"
1379   NM_FOR_BUILD="\$(NM)"
1380   RANLIB_FOR_BUILD="\$(RANLIB)"
1381   WINDRES_FOR_BUILD="\$(WINDRES)"
1382   WINDMC_FOR_BUILD="\$(WINDMC)"
1383 fi
1384
1385 AC_PROG_CC
1386 AC_PROG_CXX
1387
1388 # We must set the default linker to the linker used by gcc for the correct
1389 # operation of libtool.  If LD is not defined and we are using gcc, try to
1390 # set the LD default to the ld used by gcc.
1391 if test -z "$LD"; then
1392   if test "$GCC" = yes; then
1393     case $build in
1394     *-*-mingw*)
1395       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1396     *)
1397       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1398     esac
1399     case $gcc_prog_ld in
1400     # Accept absolute paths.
1401     [[\\/]* | [A-Za-z]:[\\/]*)]
1402       LD="$gcc_prog_ld" ;;
1403     esac
1404   fi
1405 fi
1406
1407 # Check whether -static-libstdc++ -static-libgcc is supported.
1408 have_static_libs=no
1409 if test "$GCC" = yes; then
1410   saved_LDFLAGS="$LDFLAGS"
1411
1412   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1413   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1414   AC_LANG_PUSH(C++)
1415   AC_LINK_IFELSE([
1416 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1417 #error -static-libstdc++ not implemented
1418 #endif
1419 int main() {}],
1420     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1421     [AC_MSG_RESULT([no])])
1422   AC_LANG_POP(C++)
1423
1424   LDFLAGS="$saved_LDFLAGS"
1425 fi
1426
1427 ACX_PROG_GNAT
1428 ACX_PROG_CMP_IGNORE_INITIAL
1429
1430 AC_ARG_ENABLE([bootstrap],
1431 [AS_HELP_STRING([--enable-bootstrap],
1432                 [enable bootstrapping @<:@yes if native build@:>@])],,
1433 enable_bootstrap=default)
1434
1435 # Issue errors and warnings for invalid/strange bootstrap combinations.
1436 if test -r $srcdir/gcc/configure; then
1437   have_compiler=yes
1438 else
1439   have_compiler=no
1440 fi
1441
1442 case "$have_compiler:$host:$target:$enable_bootstrap" in
1443   *:*:*:no) ;;
1444
1445   # Default behavior.  Enable bootstrap if we have a compiler
1446   # and we are in a native configuration.
1447   yes:$build:$build:default)
1448     enable_bootstrap=yes ;;
1449
1450   *:*:*:default)
1451     enable_bootstrap=no ;;
1452
1453   # We have a compiler and we are in a native configuration, bootstrap is ok
1454   yes:$build:$build:yes)
1455     ;;
1456
1457   # Other configurations, but we have a compiler.  Assume the user knows
1458   # what he's doing.
1459   yes:*:*:yes)
1460     AC_MSG_WARN([trying to bootstrap a cross compiler])
1461     ;;
1462
1463   # No compiler: if they passed --enable-bootstrap explicitly, fail
1464   no:*:*:yes)
1465     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1466
1467   # Fail if wrong command line
1468   *)
1469     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1470     ;;
1471 esac
1472
1473 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1474 # C++98 compiler can still start the bootstrap.
1475 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1476   CXX="$CXX -std=gnu++98"
1477 fi
1478
1479 # Used for setting $lt_cv_objdir
1480 _LT_CHECK_OBJDIR
1481
1482 # Check for GMP, MPFR and MPC
1483 gmplibs="-lmpc -lmpfr -lgmp"
1484 gmpinc=
1485 have_gmp=no
1486
1487 # Specify a location for mpc
1488 # check for this first so it ends up on the link line before mpfr.
1489 AC_ARG_WITH(mpc,
1490 [AS_HELP_STRING([--with-mpc=PATH],
1491                 [specify prefix directory for installed MPC package.
1492                  Equivalent to --with-mpc-include=PATH/include
1493                  plus --with-mpc-lib=PATH/lib])])
1494 AC_ARG_WITH(mpc-include,
1495 [AS_HELP_STRING([--with-mpc-include=PATH],
1496                 [specify directory for installed MPC include files])])
1497 AC_ARG_WITH(mpc-lib,
1498 [AS_HELP_STRING([--with-mpc-lib=PATH],
1499                 [specify directory for the installed MPC library])])
1500
1501 if test "x$with_mpc" != x; then
1502   gmplibs="-L$with_mpc/lib $gmplibs"
1503   gmpinc="-I$with_mpc/include $gmpinc"
1504 fi
1505 if test "x$with_mpc_include" != x; then
1506   gmpinc="-I$with_mpc_include $gmpinc"
1507 fi
1508 if test "x$with_mpc_lib" != x; then
1509   gmplibs="-L$with_mpc_lib $gmplibs"
1510 fi
1511 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1512   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1513   gmpinc='-I$$s/mpc/src '"$gmpinc"
1514   # Do not test the mpc version.  Assume that it is sufficient, since
1515   # it is in the source tree, and the library has not been built yet
1516   # but it would be included on the link line in the version check below
1517   # hence making the test fail.
1518   have_gmp=yes
1519 fi
1520
1521 # Specify a location for mpfr
1522 # check for this first so it ends up on the link line before gmp.
1523 AC_ARG_WITH(mpfr-dir,
1524 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1525 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1526 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1527
1528 AC_ARG_WITH(mpfr,
1529 [AS_HELP_STRING([--with-mpfr=PATH],
1530                 [specify prefix directory for installed MPFR package.
1531                  Equivalent to --with-mpfr-include=PATH/include
1532                  plus --with-mpfr-lib=PATH/lib])])
1533 AC_ARG_WITH(mpfr-include,
1534 [AS_HELP_STRING([--with-mpfr-include=PATH],
1535                 [specify directory for installed MPFR include files])])
1536 AC_ARG_WITH(mpfr-lib,
1537 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1538                 [specify directory for the installed MPFR library])])
1539
1540 if test "x$with_mpfr" != x; then
1541   gmplibs="-L$with_mpfr/lib $gmplibs"
1542   gmpinc="-I$with_mpfr/include $gmpinc"
1543 fi
1544 if test "x$with_mpfr_include" != x; then
1545   gmpinc="-I$with_mpfr_include $gmpinc"
1546 fi
1547 if test "x$with_mpfr_lib" != x; then
1548   gmplibs="-L$with_mpfr_lib $gmplibs"
1549 fi
1550 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1551   # MPFR v3.1.0 moved the sources into a src sub-directory.
1552   if test -d ${srcdir}/mpfr/src; then
1553     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1554     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1555     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1556   else
1557     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1558     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1559     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1560   fi
1561   # Do not test the mpfr version.  Assume that it is sufficient, since
1562   # it is in the source tree, and the library has not been built yet
1563   # but it would be included on the link line in the version check below
1564   # hence making the test fail.
1565   have_gmp=yes
1566 fi
1567
1568 # Specify a location for gmp
1569 AC_ARG_WITH(gmp-dir,
1570 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1571 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1572 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1573
1574 AC_ARG_WITH(gmp,
1575 [AS_HELP_STRING([--with-gmp=PATH],
1576                 [specify prefix directory for the installed GMP package.
1577                  Equivalent to --with-gmp-include=PATH/include
1578                  plus --with-gmp-lib=PATH/lib])])
1579 AC_ARG_WITH(gmp-include,
1580 [AS_HELP_STRING([--with-gmp-include=PATH],
1581                 [specify directory for installed GMP include files])])
1582 AC_ARG_WITH(gmp-lib,
1583 [AS_HELP_STRING([--with-gmp-lib=PATH],
1584                 [specify directory for the installed GMP library])])
1585
1586
1587 if test "x$with_gmp" != x; then
1588   gmplibs="-L$with_gmp/lib $gmplibs"
1589   gmpinc="-I$with_gmp/include $gmpinc"
1590 fi
1591 if test "x$with_gmp_include" != x; then
1592   gmpinc="-I$with_gmp_include $gmpinc"
1593 fi
1594 if test "x$with_gmp_lib" != x; then
1595   gmplibs="-L$with_gmp_lib $gmplibs"
1596 fi
1597 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1598   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1599   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1600   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1601   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1602   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1603   # Do not test the gmp version.  Assume that it is sufficient, since
1604   # it is in the source tree, and the library has not been built yet
1605   # but it would be included on the link line in the version check below
1606   # hence making the test fail.
1607   have_gmp=yes
1608 fi
1609
1610 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1611   have_gmp=yes
1612   saved_CFLAGS="$CFLAGS"
1613   CFLAGS="$CFLAGS $gmpinc"
1614   # Check for the recommended and required versions of GMP.
1615   AC_MSG_CHECKING([for the correct version of gmp.h])
1616   AC_TRY_COMPILE([#include "gmp.h"],[
1617   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1618   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1619   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1620   choke me
1621   #endif
1622   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1623   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1624   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1625   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1626   choke me
1627   #endif
1628   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1629    [AC_MSG_RESULT([no]); have_gmp=no])
1630
1631   # If we have GMP, check the MPFR version.
1632   if test x"$have_gmp" = xyes; then
1633     # Check for the recommended and required versions of MPFR.
1634     AC_MSG_CHECKING([for the correct version of mpfr.h])
1635     AC_TRY_COMPILE([#include <gmp.h>
1636     #include <mpfr.h>],[
1637     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1638     choke me
1639     #endif
1640     ], [AC_TRY_COMPILE([#include <gmp.h>
1641     #include <mpfr.h>],[
1642     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1643     choke me
1644     #endif
1645     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1646      [AC_MSG_RESULT([no]); have_gmp=no])
1647   fi
1648
1649   # Check for the MPC header version.
1650   if test x"$have_gmp" = xyes ; then
1651     # Check for the recommended and required versions of MPC.
1652     AC_MSG_CHECKING([for the correct version of mpc.h])
1653     AC_TRY_COMPILE([#include <mpc.h>],[
1654     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1655     choke me
1656     #endif
1657     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1658     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1659     choke me
1660     #endif
1661     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1662      [AC_MSG_RESULT([no]); have_gmp=no])
1663   fi
1664
1665   # Now check the MPFR library.
1666   if test x"$have_gmp" = xyes; then
1667     saved_LIBS="$LIBS"
1668     LIBS="$LIBS $gmplibs"
1669     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1670     AC_TRY_LINK([#include <mpc.h>],[
1671     mpfr_t n;
1672     mpfr_t x;
1673     mpc_t c;
1674     int t;
1675     mpfr_init (n);
1676     mpfr_init (x);
1677     mpfr_atan2 (n, n, x, GMP_RNDN);
1678     mpfr_erfc (n, x, GMP_RNDN);
1679     mpfr_subnormalize (x, t, GMP_RNDN);
1680     mpfr_clear(n);
1681     mpfr_clear(x);
1682     mpc_init2 (c, 53);
1683     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1684     mpc_cosh (c, c, MPC_RNDNN);
1685     mpc_pow (c, c, c, MPC_RNDNN);
1686     mpc_acosh (c, c, MPC_RNDNN);
1687     mpc_clear (c);
1688     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1689     LIBS="$saved_LIBS"
1690   fi
1691
1692   CFLAGS="$saved_CFLAGS"
1693
1694 # The library versions listed in the error message below should match
1695 # the HARD-minimums enforced above.
1696   if test x$have_gmp != xyes; then
1697     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1698 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1699 their locations.  Source code for these libraries can be found at
1700 their respective hosting sites as well as at
1701 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1702 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1703 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1704 make sure that you have installed both the libraries and the header
1705 files.  They may be located in separate packages.])
1706   fi
1707 fi
1708
1709 # Flags needed for both GMP, MPFR and/or MPC.
1710 AC_SUBST(gmplibs)
1711 AC_SUBST(gmpinc)
1712 AC_SUBST(extra_mpfr_configure_flags)
1713 AC_SUBST(extra_mpc_gmp_configure_flags)
1714 AC_SUBST(extra_mpc_mpfr_configure_flags)
1715 AC_SUBST(extra_isl_gmp_configure_flags)
1716
1717 # Libraries to use for stage1 or when not bootstrapping.
1718 AC_ARG_WITH(stage1-libs,
1719 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1720 [if test "$withval" = "no" -o "$withval" = "yes"; then
1721    stage1_libs=
1722  else
1723    stage1_libs=$withval
1724  fi],
1725 [stage1_libs=])
1726 AC_SUBST(stage1_libs)
1727
1728 # Linker flags to use for stage1 or when not bootstrapping.
1729 AC_ARG_WITH(stage1-ldflags,
1730 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1731 [if test "$withval" = "no" -o "$withval" = "yes"; then
1732    stage1_ldflags=
1733  else
1734    stage1_ldflags=$withval
1735  fi],
1736 [stage1_ldflags=
1737  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1738  # if supported.  But if the user explicitly specified the libraries to use,
1739  # trust that they are doing what they want.
1740  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1741    stage1_ldflags="-static-libstdc++ -static-libgcc"
1742  fi])
1743 AC_SUBST(stage1_ldflags)
1744
1745 # Libraries to use for stage2 and later builds.
1746 AC_ARG_WITH(boot-libs,
1747 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1748 [if test "$withval" = "no" -o "$withval" = "yes"; then
1749    poststage1_libs=
1750  else
1751    poststage1_libs=$withval
1752  fi],
1753 [poststage1_libs=])
1754 AC_SUBST(poststage1_libs)
1755
1756 # Linker flags to use for stage2 and later builds.
1757 AC_ARG_WITH(boot-ldflags,
1758 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1759                 [linker flags for stage2 and later])],
1760 [if test "$withval" = "no" -o "$withval" = "yes"; then
1761    poststage1_ldflags=
1762  else
1763    poststage1_ldflags=$withval
1764  fi],
1765 [poststage1_ldflags=
1766  # In stages 2 and 3, default to linking libstdc++ and libgcc
1767  # statically.  But if the user explicitly specified the libraries to
1768  # use, trust that they are doing what they want.
1769  if test "$poststage1_libs" = ""; then
1770    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1771  fi])
1772 AC_SUBST(poststage1_ldflags)
1773
1774 # GCC GRAPHITE dependency isl.
1775 # Basic setup is inlined here, actual checks are in config/isl.m4
1776
1777 AC_ARG_WITH(isl,
1778   [AS_HELP_STRING(
1779    [--with-isl=PATH],
1780    [Specify prefix directory for the installed isl package.
1781     Equivalent to --with-isl-include=PATH/include
1782     plus --with-isl-lib=PATH/lib])])
1783
1784 # Treat --without-isl as a request to disable
1785 # GRAPHITE support and skip all following checks.
1786 if test "x$with_isl" != "xno"; then
1787   # Check for isl
1788   dnl Provide configure switches and initialize islinc & isllibs
1789   dnl with user input.
1790   ISL_INIT_FLAGS
1791   dnl The versions of isl that work for Graphite
1792   ISL_CHECK_VERSION()
1793   dnl Only execute fail-action, if isl has been requested.
1794   ISL_IF_FAILED([
1795     AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1796 fi
1797
1798 # If the isl check failed, disable builds of in-tree variant of isl
1799 if test "x$with_isl" = xno ||
1800    test "x$gcc_cv_isl" = xno; then
1801   noconfigdirs="$noconfigdirs isl"
1802   islinc=
1803 fi
1804
1805 AC_SUBST(isllibs)
1806 AC_SUBST(islinc)
1807
1808 # Check for LTO support.
1809 AC_ARG_ENABLE(lto,
1810 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1811 enable_lto=$enableval,
1812 enable_lto=yes; default_enable_lto=yes)
1813
1814 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1815   build_lto_plugin=yes
1816 ],[if test x"$default_enable_lto" = x"yes" ; then
1817     case $target in
1818       *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
1819       # On other non-ELF platforms, LTO has yet to be validated.
1820       *) enable_lto=no ;;
1821     esac
1822   else
1823   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1824   # It would also be nice to check the binutils support, but we don't
1825   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1826   # warn during gcc/ subconfigure; unless you're bootstrapping with
1827   # -flto it won't be needed until after installation anyway.
1828     case $target in
1829       *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1830       *) if test x"$enable_lto" = x"yes"; then
1831         AC_MSG_ERROR([LTO support is not enabled for this target.])
1832         fi
1833       ;;
1834     esac
1835   fi
1836   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1837   # Build it unless LTO was explicitly disabled.
1838   case $target in
1839     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1840     *) ;;
1841   esac
1842 ])
1843
1844 AC_ARG_ENABLE(linker-plugin-configure-flags,
1845   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1846     [additional flags for configuring linker plugins @<:@none@:>@])],
1847   extra_linker_plugin_configure_flags=$enableval,
1848   extra_linker_plugin_configure_flags=)
1849 AC_SUBST(extra_linker_plugin_configure_flags)
1850 AC_ARG_ENABLE(linker-plugin-flags,
1851   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1852     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1853   extra_linker_plugin_flags=$enableval,
1854   extra_linker_plugin_flags=)
1855 AC_SUBST(extra_linker_plugin_flags)
1856
1857
1858 # By default, C and C++ are the only stage 1 languages.
1859 stage1_languages=,c,
1860
1861 # Target libraries that we bootstrap.
1862 bootstrap_target_libs=,target-libgcc,
1863
1864 # Figure out what language subdirectories are present.
1865 # Look if the user specified --enable-languages="..."; if not, use
1866 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1867 # go away some day.
1868 # NB:  embedded tabs in this IF block -- do not untabify
1869 if test -d ${srcdir}/gcc; then
1870   if test x"${enable_languages+set}" != xset; then
1871     if test x"${LANGUAGES+set}" = xset; then
1872       enable_languages="${LANGUAGES}"
1873         echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1874     else
1875       enable_languages=all
1876     fi
1877   else
1878     if test x"${enable_languages}" = x ||
1879        test x"${enable_languages}" = xyes;
1880        then
1881       echo configure.ac: --enable-languages needs at least one language argument 1>&2
1882       exit 1
1883     fi
1884   fi
1885   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1886
1887   # 'f95' is the old name for the 'fortran' language. We issue a warning
1888   # and make the substitution.
1889   case ,${enable_languages}, in
1890     *,f95,*)
1891       echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1892       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1893       ;;
1894   esac
1895
1896   # If bootstrapping, C++ must be enabled.
1897   case ",$enable_languages,:$enable_bootstrap" in
1898     *,c++,*:*) ;;
1899     *:yes)
1900       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1901         enable_languages="${enable_languages},c++"
1902       else
1903         AC_MSG_ERROR([bootstrapping requires c++ sources])
1904       fi
1905       ;;
1906   esac
1907
1908   # First scan to see if an enabled language requires some other language.
1909   # We assume that a given config-lang.in will list all the language
1910   # front ends it requires, even if some are required indirectly.
1911   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1912     case ${lang_frag} in
1913       ..) ;;
1914       # The odd quoting in the next line works around
1915       # an apparent bug in bash 1.12 on linux.
1916       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1917       *)
1918         # From the config-lang.in, get $language, $lang_requires, and
1919         # $lang_requires_boot_languages.
1920         language=
1921         lang_requires=
1922         lang_requires_boot_languages=
1923         . ${lang_frag}
1924         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1925           case ,${enable_languages}, in
1926             *,$other,*) ;;
1927             *,all,*) ;;
1928             *,$language,*)
1929               echo " \`$other' language required by \`$language'; enabling" 1>&2
1930               enable_languages="${enable_languages},${other}"
1931               ;;
1932           esac
1933         done
1934         for other in ${lang_requires_boot_languages} ; do
1935           if test "$other" != "c"; then
1936             case ,${enable_stage1_languages}, in
1937               *,$other,*) ;;
1938               *,all,*) ;;
1939               *)
1940                 case ,${enable_languages}, in
1941                   *,$language,*)
1942                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1943                     enable_stage1_languages="$enable_stage1_languages,${other}"
1944                     ;;
1945                 esac
1946                 ;;
1947             esac
1948           fi
1949         done
1950         ;;
1951     esac
1952   done
1953
1954   new_enable_languages=,c,
1955
1956   # If LTO is enabled, add the LTO front end.
1957   if test "$enable_lto" = "yes" ; then
1958     case ,${enable_languages}, in
1959       *,lto,*) ;;
1960       *) enable_languages="${enable_languages},lto" ;;
1961     esac
1962     if test "${build_lto_plugin}" = "yes" ; then
1963       configdirs="$configdirs lto-plugin"
1964     fi
1965   fi
1966
1967   # If we're building an offloading compiler, add the LTO front end.
1968   if test x"$enable_as_accelerator_for" != x ; then
1969     case ,${enable_languages}, in
1970       *,lto,*) ;;
1971       *) enable_languages="${enable_languages},lto" ;;
1972     esac
1973   fi
1974
1975   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1976   potential_languages=,c,
1977
1978   enabled_target_libs=
1979   disabled_target_libs=
1980
1981   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1982     case ${lang_frag} in
1983       ..) ;;
1984       # The odd quoting in the next line works around
1985       # an apparent bug in bash 1.12 on linux.
1986       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1987       *)
1988         # From the config-lang.in, get $language, $target_libs,
1989         # $lang_dirs, $boot_language, and $build_by_default
1990         language=
1991         target_libs=
1992         lang_dirs=
1993         subdir_requires=
1994         boot_language=no
1995         build_by_default=yes
1996         . ${lang_frag}
1997         if test x${language} = x; then
1998           echo "${lang_frag} doesn't set \$language." 1>&2
1999           exit 1
2000         fi
2001
2002         if test "$language" = "c++"; then
2003           boot_language=yes
2004         fi
2005
2006         add_this_lang=no
2007         case ,${enable_languages}, in
2008           *,${language},*)
2009             # Language was explicitly selected; include it
2010             # unless it is C, which is enabled by default.
2011             if test "$language" != "c"; then
2012               add_this_lang=yes
2013             fi
2014             ;;
2015           *,all,*)
2016             # 'all' was selected, select it if it is a default language
2017             if test "$language" != "c"; then
2018               add_this_lang=${build_by_default}
2019             fi
2020             ;;
2021         esac
2022
2023         # Disable languages that need other directories if these aren't available.
2024         for i in $subdir_requires; do
2025           test -f "$srcdir/gcc/$i/config-lang.in" && continue
2026           case ,${enable_languages}, in
2027             *,${language},*)
2028               # Specifically requested language; tell them.
2029               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2030               ;;
2031             *)
2032               # Silently disable.
2033               add_this_lang=unsupported
2034               ;;
2035           esac
2036         done
2037
2038         # Disable Ada if no preexisting GNAT is available.
2039         case ,${enable_languages},:${language}:${have_gnat} in
2040           *,${language},*:ada:no)
2041             # Specifically requested language; tell them.
2042             AC_MSG_ERROR([GNAT is required to build $language])
2043             ;;
2044           *:ada:no)
2045             # Silently disable.
2046             add_this_lang=unsupported
2047             ;;
2048         esac
2049
2050         # Disable a language that is unsupported by the target.
2051         case " $unsupported_languages " in
2052           *" $language "*)
2053             add_this_lang=unsupported
2054             ;;
2055         esac
2056
2057         case $add_this_lang in
2058           unsupported)
2059             # Remove language-dependent dirs.
2060             disabled_target_libs="$disabled_target_libs $target_libs"
2061             noconfigdirs="$noconfigdirs $lang_dirs"
2062             ;;
2063           no)
2064             # Remove language-dependent dirs; still show language as supported.
2065             disabled_target_libs="$disabled_target_libs $target_libs"
2066             noconfigdirs="$noconfigdirs $lang_dirs"
2067             potential_languages="${potential_languages}${language},"
2068             ;;
2069           yes)
2070             new_enable_languages="${new_enable_languages}${language},"
2071             potential_languages="${potential_languages}${language},"
2072             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2073             enabled_target_libs="$enabled_target_libs $target_libs"
2074             case "${boot_language}:,$enable_stage1_languages," in
2075               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2076                 # Add to (comma-separated) list of stage 1 languages.
2077                 case ",$stage1_languages," in
2078                   *,$language,* | ,yes, | ,all,) ;;
2079                   *) stage1_languages="${stage1_languages}${language}," ;;
2080                 esac
2081                 # We need to bootstrap any supporting libraries.
2082                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2083                 ;;
2084             esac
2085             ;;
2086         esac
2087         ;;
2088     esac
2089   done
2090
2091   # Add target libraries which are only needed for disabled languages
2092   # to noconfigdirs.
2093   if test -n "$disabled_target_libs"; then
2094     for dir in $disabled_target_libs; do
2095       case " $enabled_target_libs " in
2096       *" ${dir} "*) ;;
2097       *) noconfigdirs="$noconfigdirs $dir" ;;
2098       esac
2099     done
2100   fi
2101
2102   AC_ARG_ENABLE(stage1-languages,
2103   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2104                   [choose additional languages to build during
2105                   stage1.  Mostly useful for compiler development])],
2106   [case ,${enable_stage1_languages}, in
2107     ,no,|,,)
2108       # Set it to something that will have no effect in the loop below
2109       enable_stage1_languages=c ;;
2110     ,yes,)
2111       enable_stage1_languages=`echo $new_enable_languages | \
2112         sed -e "s/^,//" -e "s/,$//" ` ;;
2113     *,all,*)
2114       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2115         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2116   esac
2117
2118   # Add "good" languages from enable_stage1_languages to stage1_languages,
2119   # while "bad" languages go in missing_languages.  Leave no duplicates.
2120   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2121     case $potential_languages in
2122       *,$i,*)
2123         case $stage1_languages in
2124           *,$i,*) ;;
2125           *) stage1_languages="$stage1_languages$i," ;;
2126         esac ;;
2127       *)
2128         case $missing_languages in
2129           *,$i,*) ;;
2130           *) missing_languages="$missing_languages$i," ;;
2131         esac ;;
2132      esac
2133   done])
2134
2135   # Remove leading/trailing commas that were added for simplicity
2136   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2137   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2138   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2139   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2140
2141   if test "x$missing_languages" != x; then
2142     AC_MSG_ERROR([
2143 The following requested languages could not be built: ${missing_languages}
2144 Supported languages are: ${potential_languages}])
2145   fi
2146   if test "x$new_enable_languages" != "x$enable_languages"; then
2147     echo The following languages will be built: ${new_enable_languages}
2148     enable_languages="$new_enable_languages"
2149   fi
2150
2151   AC_SUBST(stage1_languages)
2152   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2153 fi
2154
2155 # Handle --disable-<component> generically.
2156 for dir in $configdirs $build_configdirs $target_configdirs ; do
2157   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2158   varname=`echo $dirname | sed -e s/+/_/g`
2159   if eval test x\${enable_${varname}} "=" xno ; then
2160     noconfigdirs="$noconfigdirs $dir"
2161   fi
2162 done
2163
2164 # Check for Boehm's garbage collector
2165 AC_ARG_ENABLE(objc-gc,
2166 [AS_HELP_STRING([--enable-objc-gc],
2167                 [enable use of Boehm's garbage collector with the
2168                  GNU Objective-C runtime])],
2169 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2170   *,objc,*:*:yes:*target-boehm-gc*)
2171     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2172     ;;
2173 esac])
2174
2175 # Make sure we only build Boehm's garbage collector if required.
2176 case ,${enable_languages},:${enable_objc_gc} in
2177   *,objc,*:yes)
2178     # Keep target-boehm-gc if requested for Objective-C.
2179     ;;
2180   *)
2181     # Otherwise remove target-boehm-gc depending on target-libjava.
2182     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2183       noconfigdirs="$noconfigdirs target-boehm-gc"
2184     fi
2185     ;;
2186 esac
2187
2188 # Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2189 case ,${enable_languages}, in
2190   *,c++,*)
2191     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2192     case "${noconfigdirs}" in
2193       *target-libstdc++-v3*)
2194         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2195         ;;
2196       *) ;;
2197     esac
2198     ;;
2199   *)
2200     noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2201     ;;
2202 esac
2203
2204 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2205 # $build_configdirs and $target_configdirs.
2206 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2207
2208 notsupp=""
2209 for dir in . $skipdirs $noconfigdirs ; do
2210   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2211   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2212     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2213     if test -r $srcdir/$dirname/configure ; then
2214       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2215         true
2216       else
2217         notsupp="$notsupp $dir"
2218       fi
2219     fi
2220   fi
2221   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2222     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2223     if test -r $srcdir/$dirname/configure ; then
2224       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2225         true
2226       else
2227         notsupp="$notsupp $dir"
2228       fi
2229     fi
2230   fi
2231   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2232     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2233     if test -r $srcdir/$dirname/configure ; then
2234       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2235         true
2236       else
2237         notsupp="$notsupp $dir"
2238       fi
2239     fi
2240   fi
2241 done
2242
2243 # Quietly strip out all directories which aren't configurable in this tree.
2244 # This relies on all configurable subdirectories being autoconfiscated, which
2245 # is now the case.
2246 build_configdirs_all="$build_configdirs"
2247 build_configdirs=
2248 for i in ${build_configdirs_all} ; do
2249   j=`echo $i | sed -e s/build-//g`
2250   if test -f ${srcdir}/$j/configure ; then
2251     build_configdirs="${build_configdirs} $i"
2252   fi
2253 done
2254
2255 configdirs_all="$configdirs"
2256 configdirs=
2257 for i in ${configdirs_all} ; do
2258   if test -f ${srcdir}/$i/configure ; then
2259     configdirs="${configdirs} $i"
2260   fi
2261 done
2262
2263 target_configdirs_all="$target_configdirs"
2264 target_configdirs=
2265 for i in ${target_configdirs_all} ; do
2266   j=`echo $i | sed -e s/target-//g`
2267   if test -f ${srcdir}/$j/configure ; then
2268     target_configdirs="${target_configdirs} $i"
2269   fi
2270 done
2271
2272 # Exclude target-zlib if target-libjava isn't built.
2273 case ${target_configdirs} in
2274 *target-libjava*)
2275   ;;
2276 *)
2277   target_configdirs="`echo ${target_configdirs} | sed -e 's/target-zlib//'`"
2278   ;;
2279 esac
2280
2281 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2282 # so we have to add it after the preceding checks.
2283 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2284 then
2285   case " $configdirs " in
2286     *" libiberty "*)
2287       # If we can build libiberty, we can also build libiberty-linker-plugin.
2288       configdirs="$configdirs libiberty-linker-plugin"
2289       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2290         --with-libiberty=../libiberty-linker-plugin";;
2291     *)
2292       AC_MSG_ERROR([libiberty missing]);;
2293   esac
2294 fi
2295
2296 # Sometimes we have special requirements for the host libiberty.
2297 extra_host_libiberty_configure_flags=
2298 extra_host_zlib_configure_flags=
2299 case " $configdirs " in
2300   *" lto-plugin "* | *" libcc1 "*)
2301     # When these are to be built as shared libraries, the same applies to
2302     # libiberty.
2303     extra_host_libiberty_configure_flags=--enable-shared
2304     ;;
2305   *" bfd "*)
2306     # When bfd is to be built as a shared library, the same applies to
2307     # zlib.
2308     if test "$enable_shared" = "yes"; then
2309       extra_host_zlib_configure_flags=--enable-host-shared
2310     fi
2311     ;;
2312 esac
2313 AC_SUBST(extra_host_libiberty_configure_flags)
2314 AC_SUBST(extra_host_zlib_configure_flags)
2315
2316 # Produce a warning message for the subdirs we can't configure.
2317 # This isn't especially interesting in the Cygnus tree, but in the individual
2318 # FSF releases, it's important to let people know when their machine isn't
2319 # supported by the one or two programs in a package.
2320
2321 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2322   # If $appdirs is non-empty, at least one of those directories must still
2323   # be configured, or we error out.  (E.g., if the gas release supports a
2324   # specified target in some subdirs but not the gas subdir, we shouldn't
2325   # pretend that all is well.)
2326   if test -n "$appdirs" ; then
2327     for dir in $appdirs ; do
2328       if test -r $dir/Makefile.in ; then
2329         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2330           appdirs=""
2331           break
2332         fi
2333         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2334           appdirs=""
2335           break
2336         fi
2337       fi
2338     done
2339     if test -n "$appdirs" ; then
2340       echo "*** This configuration is not supported by this package." 1>&2
2341       exit 1
2342     fi
2343   fi
2344   # Okay, some application will build, or we don't care to check.  Still
2345   # notify of subdirs not getting built.
2346   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2347   echo "    ${notsupp}" 1>&2
2348   echo "    (Any other directories should still work fine.)" 1>&2
2349 fi
2350
2351 case "$host" in
2352   *msdosdjgpp*)
2353     enable_gdbtk=no ;;
2354 esac
2355
2356 # To find our prefix, in gcc_cv_tool_prefix.
2357 ACX_TOOL_DIRS
2358
2359 copy_dirs=
2360
2361 AC_ARG_WITH([build-sysroot],
2362   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2363                   [use sysroot as the system root during the build])],
2364   [if test x"$withval" != x ; then
2365      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2366    fi],
2367   [SYSROOT_CFLAGS_FOR_TARGET=])
2368 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2369
2370 AC_ARG_WITH([debug-prefix-map],
2371   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2372                   [map A to B, C to D ... in debug information])],
2373   [if test x"$withval" != x; then
2374      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2375      for debug_map in $withval; do
2376        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2377      done
2378    fi],
2379   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2380 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2381
2382 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2383 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2384 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2385 # We want to ensure that TARGET libraries (which we know are built with
2386 # gcc) are built with "-O2 -g", so include those options when setting
2387 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2388 if test "x$CFLAGS_FOR_TARGET" = x; then
2389   if test "x${is_cross_compiler}" = xyes; then
2390     CFLAGS_FOR_TARGET="-g -O2"
2391   else
2392     CFLAGS_FOR_TARGET=$CFLAGS
2393     case " $CFLAGS " in
2394       *" -O2 "*) ;;
2395       *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2396     esac
2397     case " $CFLAGS " in
2398       *" -g "* | *" -g3 "*) ;;
2399       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2400     esac
2401   fi
2402 fi
2403 AC_SUBST(CFLAGS_FOR_TARGET)
2404
2405 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2406   if test "x${is_cross_compiler}" = xyes; then
2407     CXXFLAGS_FOR_TARGET="-g -O2"
2408   else
2409     CXXFLAGS_FOR_TARGET=$CXXFLAGS
2410     case " $CXXFLAGS " in
2411       *" -O2 "*) ;;
2412       *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2413     esac
2414     case " $CXXFLAGS " in
2415       *" -g "* | *" -g3 "*) ;;
2416       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2417     esac
2418   fi
2419 fi
2420 AC_SUBST(CXXFLAGS_FOR_TARGET)
2421
2422 AC_SUBST(LDFLAGS_FOR_TARGET)
2423
2424 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2425 # the named directory are copied to $(tooldir)/sys-include.
2426 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2427   if test x${is_cross_compiler} = xno ; then
2428     echo 1>&2 '***' --with-headers is only supported when cross compiling
2429     exit 1
2430   fi
2431   if test x"${with_headers}" != xyes ; then
2432     x=${gcc_cv_tool_prefix}
2433     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2434   fi
2435 fi
2436
2437 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2438 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2439 # are permitted.
2440 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2441   if test x${is_cross_compiler} = xno ; then
2442     echo 1>&2 '***' --with-libs is only supported when cross compiling
2443     exit 1
2444   fi
2445   if test x"${with_libs}" != xyes ; then
2446     # Copy the libraries in reverse order, so that files in the first named
2447     # library override files in subsequent libraries.
2448     x=${gcc_cv_tool_prefix}
2449     for l in ${with_libs}; do
2450       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2451     done
2452   fi
2453 fi
2454
2455 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2456 #
2457 # This is done by determining whether or not the appropriate directory
2458 # is available, and by checking whether or not specific configurations
2459 # have requested that this magic not happen.
2460 #
2461 # The command line options always override the explicit settings in
2462 # configure.ac, and the settings in configure.ac override this magic.
2463 #
2464 # If the default for a toolchain is to use GNU as and ld, and you don't
2465 # want to do that, then you should use the --without-gnu-as and
2466 # --without-gnu-ld options for the configure script.  Similarly, if
2467 # the default is to use the included zlib and you don't want to do that,
2468 # you should use the --with-system-zlib option for the configure script.
2469
2470 if test x${use_gnu_as} = x &&
2471    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2472   with_gnu_as=yes
2473   extra_host_args="$extra_host_args --with-gnu-as"
2474 fi
2475
2476 if test x${use_gnu_ld} = x &&
2477    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2478   with_gnu_ld=yes
2479   extra_host_args="$extra_host_args --with-gnu-ld"
2480 fi
2481
2482 if test x${use_included_zlib} = x &&
2483    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2484   :
2485 else
2486   with_system_zlib=yes
2487   extra_host_args="$extra_host_args --with-system-zlib"
2488 fi
2489
2490 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2491 # can detect this case.
2492
2493 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2494   with_newlib=yes
2495   extra_host_args="$extra_host_args --with-newlib"
2496 fi
2497
2498 # Handle ${copy_dirs}
2499 set fnord ${copy_dirs}
2500 shift
2501 while test $# != 0 ; do
2502   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2503     :
2504   else
2505     echo Copying $1 to $2
2506
2507     # Use the install script to create the directory and all required
2508     # parent directories.
2509     if test -d $2 ; then
2510       :
2511     else
2512       echo >config.temp
2513       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2514     fi
2515
2516     # Copy the directory, assuming we have tar.
2517     # FIXME: Should we use B in the second tar?  Not all systems support it.
2518     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2519
2520     # It is the responsibility of the user to correctly adjust all
2521     # symlinks.  If somebody can figure out how to handle them correctly
2522     # here, feel free to add the code.
2523
2524     echo $1 > $2/COPIED
2525   fi
2526   shift; shift
2527 done
2528
2529 # Determine a target-dependent exec_prefix that the installed
2530 # gcc will search in.  Keep this list sorted by triplet, with
2531 # the *-*-osname triplets last.
2532 md_exec_prefix=
2533 case "${target}" in
2534   i[[34567]]86-pc-msdosdjgpp*)
2535     md_exec_prefix=/dev/env/DJDIR/bin
2536     ;;
2537   *-*-hpux* | \
2538   *-*-nto-qnx* | \
2539   *-*-solaris2*)
2540     md_exec_prefix=/usr/ccs/bin
2541     ;;
2542 esac
2543
2544 extra_arflags_for_target=
2545 extra_nmflags_for_target=
2546 extra_ranlibflags_for_target=
2547 target_makefile_frag=/dev/null
2548 case "${target}" in
2549   spu-*-*)
2550     target_makefile_frag="config/mt-spu"
2551     ;;
2552   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2553     target_makefile_frag="config/mt-sde"
2554     ;;
2555   mipsisa*-*-elfoabi*)
2556     target_makefile_frag="config/mt-mips-elfoabi"
2557     ;;
2558   mips*-*-*linux* | mips*-*-gnu*)
2559     target_makefile_frag="config/mt-mips-gnu"
2560     ;;
2561   nios2-*-elf*)
2562     target_makefile_frag="config/mt-nios2-elf"
2563     ;;
2564   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2565     target_makefile_frag="config/mt-gnu"
2566     ;;
2567   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2568     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2569     # commands to handle both 32-bit and 64-bit objects.  These flags are
2570     # harmless if we're using GNU nm or ar.
2571     extra_arflags_for_target=" -X32_64"
2572     extra_nmflags_for_target=" -B -X32_64"
2573     ;;
2574 esac
2575
2576 alphaieee_frag=/dev/null
2577 case $target in
2578   alpha*-*-*)
2579     # This just makes sure to use the -mieee option to build target libs.
2580     # This should probably be set individually by each library.
2581     alphaieee_frag="config/mt-alphaieee"
2582     ;;
2583 esac
2584
2585 # If --enable-target-optspace always use -Os instead of -O2 to build
2586 # the target libraries, similarly if it is not specified, use -Os
2587 # on selected platforms.
2588 ospace_frag=/dev/null
2589 case "${enable_target_optspace}:${target}" in
2590   yes:*)
2591     ospace_frag="config/mt-ospace"
2592     ;;
2593   :d30v-*)
2594     ospace_frag="config/mt-d30v"
2595     ;;
2596   :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2597     ospace_frag="config/mt-ospace"
2598     ;;
2599   no:* | :*)
2600     ;;
2601   *)
2602     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2603     ;;
2604 esac
2605
2606 # Some systems (e.g., one of the i386-aix systems the gas testers are
2607 # using) don't handle "\$" correctly, so don't use it here.
2608 tooldir='${exec_prefix}'/${target_noncanonical}
2609 build_tooldir=${tooldir}
2610
2611 # Create a .gdbinit file which runs the one in srcdir
2612 # and tells GDB to look there for source files.
2613
2614 if test -r ${srcdir}/.gdbinit ; then
2615   case ${srcdir} in
2616     .) ;;
2617     *) cat > ./.gdbinit <<EOF
2618 # ${NO_EDIT}
2619 dir ${srcdir}
2620 dir .
2621 source ${srcdir}/.gdbinit
2622 EOF
2623     ;;
2624   esac
2625 fi
2626
2627 # Make sure that the compiler is able to generate an executable.  If it
2628 # can't, we are probably in trouble.  We don't care whether we can run the
2629 # executable--we might be using a cross compiler--we only care whether it
2630 # can be created.  At this point the main configure script has set CC.
2631 we_are_ok=no
2632 echo "int main () { return 0; }" > conftest.c
2633 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2634 if test $? = 0 ; then
2635   if test -s conftest || test -s conftest.exe ; then
2636     we_are_ok=yes
2637   fi
2638 fi
2639 case $we_are_ok in
2640   no)
2641     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2642     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2643     rm -f conftest*
2644     exit 1
2645     ;;
2646 esac
2647 rm -f conftest*
2648
2649 # Decide which environment variable is used to find dynamic libraries.
2650 case "${host}" in
2651   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2652   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2653   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2654   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2655 esac
2656
2657 # On systems where the dynamic library environment variable is PATH,
2658 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2659 # built executables to PATH.
2660 if test "$RPATH_ENVVAR" = PATH; then
2661   GCC_SHLIB_SUBDIR=/shlib
2662 else
2663   GCC_SHLIB_SUBDIR=
2664 fi
2665
2666 # Adjust the toplevel makefile according to whether bootstrap was selected.
2667 case $enable_bootstrap in
2668   yes)
2669     bootstrap_suffix=bootstrap
2670     BUILD_CONFIG=bootstrap-debug
2671     ;;
2672   no)
2673     bootstrap_suffix=no-bootstrap
2674     BUILD_CONFIG=
2675     ;;
2676 esac
2677
2678 AC_MSG_CHECKING(for default BUILD_CONFIG)
2679
2680 AC_ARG_WITH([build-config],
2681   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2682                   [use config/NAME.mk build configuration])],
2683   [case $with_build_config in
2684    yes) with_build_config= ;;
2685    no) with_build_config= BUILD_CONFIG= ;;
2686    esac])
2687
2688 if test "x${with_build_config}" != x; then
2689   BUILD_CONFIG=$with_build_config
2690 else
2691   case $BUILD_CONFIG in
2692   bootstrap-debug)
2693     if echo "int f (void) { return 0; }" > conftest.c &&
2694        ${CC} -c conftest.c &&
2695        mv conftest.o conftest.o.g0 &&
2696        ${CC} -c -g conftest.c &&
2697        mv conftest.o conftest.o.g &&
2698        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2699       :
2700     else
2701       BUILD_CONFIG=
2702     fi
2703     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2704     ;;
2705   esac
2706 fi
2707 AC_MSG_RESULT($BUILD_CONFIG)
2708 AC_SUBST(BUILD_CONFIG)
2709
2710 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2711 AC_MSG_CHECKING([for --enable-vtable-verify])
2712 AC_ARG_ENABLE(vtable-verify,
2713 [AS_HELP_STRING([--enable-vtable-verify],
2714                 [Enable vtable verification feature])],
2715 [case "$enableval" in
2716  yes) enable_vtable_verify=yes ;;
2717  no)  enable_vtable_verify=no ;;
2718  *)   enable_vtable_verify=no;;
2719  esac],
2720 [enable_vtable_verify=no])
2721 AC_MSG_RESULT($enable_vtable_verify)
2722
2723 # Record target_configdirs and the configure arguments for target and
2724 # build configuration in Makefile.
2725 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2726 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2727 bootstrap_fixincludes=no
2728
2729 # If we are building libgomp, bootstrap it.
2730 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2731   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2732 fi
2733
2734 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2735 # or bootstrap-ubsan, bootstrap it.
2736 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2737   case "$BUILD_CONFIG" in
2738     *bootstrap-asan* | *bootstrap-ubsan* )
2739       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2740       bootstrap_fixincludes=yes
2741       ;;
2742   esac
2743 fi
2744
2745 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2746 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2747    test "$enable_vtable_verify" != no; then
2748   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2749 fi
2750
2751 # If we are building libmpx, bootstrap it.
2752 if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2753   bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2754 fi
2755
2756 # Determine whether gdb needs tk/tcl or not.
2757 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2758 # and in that case we want gdb to be built without tk.  Ugh!
2759 # In fact I believe gdb is the *only* package directly dependent on tk,
2760 # so we should be able to put the 'maybe's in unconditionally and
2761 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2762 # 100% sure that that's safe though.
2763
2764 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2765 case "$enable_gdbtk" in
2766   no)
2767     GDB_TK="" ;;
2768   yes)
2769     GDB_TK="${gdb_tk}" ;;
2770   *)
2771     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2772     # distro.  Eventually someone will fix this and move Insight, nee
2773     # gdbtk to a separate directory.
2774     if test -d ${srcdir}/gdb/gdbtk ; then
2775       GDB_TK="${gdb_tk}"
2776     else
2777       GDB_TK=""
2778     fi
2779     ;;
2780 esac
2781 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2782 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2783
2784 # Strip out unwanted targets.
2785
2786 # While at that, we remove Makefiles if we were started for recursive
2787 # configuration, so that the top-level Makefile reconfigures them,
2788 # like we used to do when configure itself was recursive.
2789
2790 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2791 # but now we're fixing up the Makefile ourselves with the additional
2792 # commands passed to AC_CONFIG_FILES.  Use separate variables
2793 # extrasub-{build,host,target} not because there is any reason to split
2794 # the substitutions up that way, but only to remain below the limit of
2795 # 99 commands in a script, for HP-UX sed.
2796 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2797
2798 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2799   yes:yes:*\ gold\ *:*,c++,*) ;;
2800   yes:yes:*\ gold\ *:*)
2801     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2802     ;;
2803 esac
2804
2805 extrasub_build=
2806 for module in ${build_configdirs} ; do
2807   if test -z "${no_recursion}" \
2808      && test -f ${build_subdir}/${module}/Makefile; then
2809     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2810     rm -f ${build_subdir}/${module}/Makefile
2811   fi
2812   extrasub_build="$extrasub_build
2813 /^@if build-$module\$/d
2814 /^@endif build-$module\$/d
2815 /^@if build-$module-$bootstrap_suffix\$/d
2816 /^@endif build-$module-$bootstrap_suffix\$/d"
2817 done
2818 extrasub_host=
2819 for module in ${configdirs} ; do
2820   if test -z "${no_recursion}"; then
2821     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2822       if test -f ${file}; then
2823         echo 1>&2 "*** removing ${file} to force reconfigure"
2824         rm -f ${file}
2825       fi
2826     done
2827   fi
2828   case ${module},${bootstrap_fixincludes} in
2829     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2830     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2831   esac
2832   extrasub_host="$extrasub_host
2833 /^@if $module\$/d
2834 /^@endif $module\$/d
2835 /^@if $module-$host_bootstrap_suffix\$/d
2836 /^@endif $module-$host_bootstrap_suffix\$/d"
2837 done
2838 extrasub_target=
2839 for module in ${target_configdirs} ; do
2840   if test -z "${no_recursion}" \
2841      && test -f ${target_subdir}/${module}/Makefile; then
2842     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2843     rm -f ${target_subdir}/${module}/Makefile
2844   fi
2845
2846   # We only bootstrap target libraries listed in bootstrap_target_libs.
2847   case $bootstrap_target_libs in
2848     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2849     *) target_bootstrap_suffix=no-bootstrap ;;
2850   esac
2851
2852   extrasub_target="$extrasub_target
2853 /^@if target-$module\$/d
2854 /^@endif target-$module\$/d
2855 /^@if target-$module-$target_bootstrap_suffix\$/d
2856 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2857 done
2858
2859 # Do the final fixup along with target modules.
2860 extrasub_target="$extrasub_target
2861 /^@if /,/^@endif /d"
2862
2863 # Create the serialization dependencies.  This uses a temporary file.
2864
2865 AC_ARG_ENABLE([serial-configure],
2866 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2867                 [force sequential configuration of
2868                  sub-packages for the host, target or build
2869                  machine, or all sub-packages])])
2870
2871 case ${enable_serial_configure} in
2872   yes)
2873     enable_serial_build_configure=yes
2874     enable_serial_host_configure=yes
2875     enable_serial_target_configure=yes
2876     ;;
2877 esac
2878
2879 # These force 'configure's to be done one at a time, to avoid problems
2880 # with contention over a shared config.cache.
2881 rm -f serdep.tmp
2882 echo '# serdep.tmp' > serdep.tmp
2883 olditem=
2884 test "x${enable_serial_build_configure}" = xyes &&
2885 for item in ${build_configdirs} ; do
2886   case ${olditem} in
2887     "") ;;
2888     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2889   esac
2890   olditem=${item}
2891 done
2892 olditem=
2893 test "x${enable_serial_host_configure}" = xyes &&
2894 for item in ${configdirs} ; do
2895   case ${olditem} in
2896     "") ;;
2897     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2898   esac
2899   olditem=${item}
2900 done
2901 olditem=
2902 test "x${enable_serial_target_configure}" = xyes &&
2903 for item in ${target_configdirs} ; do
2904   case ${olditem} in
2905     "") ;;
2906     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2907   esac
2908   olditem=${item}
2909 done
2910 serialization_dependencies=serdep.tmp
2911 AC_SUBST_FILE(serialization_dependencies)
2912
2913 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2914 # target, nonopt, and variable assignments.  These are the ones we
2915 # might not want to pass down to subconfigures.  The exception being
2916 # --cache-file=/dev/null, which is used to turn off the use of cache
2917 # files altogether, and which should be passed on to subconfigures.
2918 # Also strip program-prefix, program-suffix, and program-transform-name,
2919 # so that we can pass down a consistent program-transform-name.
2920 baseargs=
2921 tbaseargs=
2922 keep_next=no
2923 skip_next=no
2924 eval "set -- $ac_configure_args"
2925 for ac_arg
2926 do
2927   if test X"$skip_next" = X"yes"; then
2928     skip_next=no
2929     continue
2930   fi
2931   if test X"$keep_next" = X"yes"; then
2932     case $ac_arg in
2933       *\'*)
2934         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2935     esac
2936     baseargs="$baseargs '$ac_arg'"
2937     tbaseargs="$tbaseargs '$ac_arg'"
2938     keep_next=no
2939     continue
2940   fi
2941
2942   # Handle separated arguments.  Based on the logic generated by
2943   # autoconf 2.59.
2944   case $ac_arg in
2945     *=* | --config-cache | -C | -disable-* | --disable-* \
2946       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2947       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2948       | -with-* | --with-* | -without-* | --without-* | --x)
2949       separate_arg=no
2950       ;;
2951     -*)
2952       separate_arg=yes
2953       ;;
2954     *)
2955       separate_arg=no
2956       ;;
2957   esac
2958
2959   skip_targ=no
2960   case $ac_arg in
2961 changequote(,)
2962   --with-* | --without-*)
2963     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2964
2965     case $libopt in
2966     *[-_]include)
2967       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2968       ;;
2969     *[-_]lib)
2970       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2971       ;;
2972     *)
2973       lib=$libopt
2974       ;;
2975     esac
2976 changequote([,])
2977
2978     case $lib in
2979     mpc | mpfr | gmp | isl)
2980       # If we're processing --with-$lib, --with-$lib-include or
2981       # --with-$lib-lib, for one of the libs above, and target is
2982       # different from host, don't pass the current argument to any
2983       # target library's configure.
2984       if test x$is_cross_compiler = xyes; then
2985         skip_targ=yes
2986       fi
2987       ;;
2988     esac
2989     ;;
2990   esac
2991
2992   case "$ac_arg" in
2993     --cache-file=/dev/null | \
2994     -cache-file=/dev/null )
2995       # Handled here to avoid the test to skip args below.
2996       baseargs="$baseargs '$ac_arg'"
2997       tbaseargs="$tbaseargs '$ac_arg'"
2998       # Assert: $separate_arg should always be no.
2999       keep_next=$separate_arg
3000       ;;
3001     --no*)
3002       continue
3003       ;;
3004     --c* | \
3005     --sr* | \
3006     --ho* | \
3007     --bu* | \
3008     --t* | \
3009     --program-* | \
3010     -cache_file* | \
3011     -srcdir* | \
3012     -host* | \
3013     -build* | \
3014     -target* | \
3015     -program-prefix* | \
3016     -program-suffix* | \
3017     -program-transform-name* )
3018       skip_next=$separate_arg
3019       continue
3020       ;;
3021     -*)
3022       # An option.  Add it.
3023       case $ac_arg in
3024         *\'*)
3025           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3026       esac
3027       baseargs="$baseargs '$ac_arg'"
3028       if test X"$skip_targ" = Xno; then
3029         tbaseargs="$tbaseargs '$ac_arg'"
3030       fi
3031       keep_next=$separate_arg
3032       ;;
3033     *)
3034       # Either a variable assignment, or a nonopt (triplet).  Don't
3035       # pass it down; let the Makefile handle this.
3036       continue
3037       ;;
3038   esac
3039 done
3040 # Remove the initial space we just introduced and, as these will be
3041 # expanded by make, quote '$'.
3042 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3043
3044 # Add in --program-transform-name, after --program-prefix and
3045 # --program-suffix have been applied to it.  Autoconf has already
3046 # doubled dollar signs and backslashes in program_transform_name; we want
3047 # the backslashes un-doubled, and then the entire thing wrapped in single
3048 # quotes, because this will be expanded first by make and then by the shell.
3049 # Also, because we want to override the logic in subdir configure scripts to
3050 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3051 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3052 ${program_transform_name}
3053 EOF_SED
3054 gcc_transform_name=`cat conftestsed.out`
3055 rm -f conftestsed.out
3056 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3057 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3058 if test "$silent" = yes; then
3059   baseargs="$baseargs --silent"
3060   tbaseargs="$tbaseargs --silent"
3061 fi
3062 baseargs="$baseargs --disable-option-checking"
3063 tbaseargs="$tbaseargs --disable-option-checking"
3064
3065 # Record and document user additions to sub configure arguments.
3066 AC_ARG_VAR([build_configargs],
3067            [additional configure arguments for build directories])
3068 AC_ARG_VAR([host_configargs],
3069            [additional configure arguments for host directories])
3070 AC_ARG_VAR([target_configargs],
3071            [additional configure arguments for target directories])
3072
3073 # For the build-side libraries, we just need to pretend we're native,
3074 # and not use the same cache file.  Multilibs are neither needed nor
3075 # desired.  We can't even use the same cache file for all build-side
3076 # libraries, as they're compiled differently; some with C, some with
3077 # C++ or with different feature-enabling options.
3078 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3079
3080 # For host modules, accept cache file option, or specification as blank.
3081 case "${cache_file}" in
3082 "") # empty
3083   cache_file_option="" ;;
3084 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3085   cache_file_option="--cache-file=${cache_file}" ;;
3086 *) # relative path
3087   cache_file_option="--cache-file=../${cache_file}" ;;
3088 esac
3089
3090 # Host dirs don't like to share a cache file either, horribly enough.
3091 # This seems to be due to autoconf 2.5x stupidity.
3092 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3093
3094 target_configargs="$target_configargs ${tbaseargs}"
3095
3096 # Passing a --with-cross-host argument lets the target libraries know
3097 # whether they are being built with a cross-compiler or being built
3098 # native.  However, it would be better to use other mechanisms to make the
3099 # sorts of decisions they want to make on this basis.  Please consider
3100 # this option to be deprecated.  FIXME.
3101 if test x${is_cross_compiler} = xyes ; then
3102   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3103 fi
3104
3105 # Special user-friendly check for native x86_64-linux build, if
3106 # multilib is not explicitly enabled.
3107 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3108   x86_64-*linux*:yes:$build:$build:)
3109     # Make sure we have a development environment that handles 32-bit
3110     dev64=no
3111     echo "int main () { return 0; }" > conftest.c
3112     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3113     if test $? = 0 ; then
3114       if test -s conftest || test -s conftest.exe ; then
3115         dev64=yes
3116       fi
3117     fi
3118     rm -f conftest*
3119     if test x${dev64} != xyes ; then
3120       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.])
3121     fi
3122     ;;
3123 esac
3124
3125 # Default to --enable-multilib.
3126 if test x${enable_multilib} = x ; then
3127   target_configargs="--enable-multilib ${target_configargs}"
3128 fi
3129
3130 # Pass --with-newlib if appropriate.  Note that target_configdirs has
3131 # changed from the earlier setting of with_newlib.
3132 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3133   target_configargs="--with-newlib ${target_configargs}"
3134 fi
3135
3136 # Different target subdirs use different values of certain variables
3137 # (notably CXX).  Worse, multilibs use *lots* of different values.
3138 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3139 # it doesn't automatically accept command-line overrides of them.
3140 # This means it's not safe for target subdirs to share a cache file,
3141 # which is disgusting, but there you have it.  Hopefully this can be
3142 # fixed in future.  It's still worthwhile to use a cache file for each
3143 # directory.  I think.
3144
3145 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3146 # We need to pass --target, as newer autoconf's requires consistency
3147 # for target_alias and gcc doesn't manage it consistently.
3148 target_configargs="--cache-file=./config.cache ${target_configargs}"
3149
3150 FLAGS_FOR_TARGET=
3151 case " $target_configdirs " in
3152  *" newlib "*)
3153   case " $target_configargs " in
3154   *" --with-newlib "*)
3155    case "$target" in
3156     *-cygwin*)
3157       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3158       ;;
3159    esac
3160
3161    # If we're not building GCC, don't discard standard headers.
3162    if test -d ${srcdir}/gcc; then
3163      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3164
3165      if test "${build}" != "${host}"; then
3166        # On Canadian crosses, CC_FOR_TARGET will have already been set
3167        # by `configure', so we won't have an opportunity to add -Bgcc/
3168        # to it.  This is right: we don't want to search that directory
3169        # for binaries, but we want the header files in there, so add
3170        # them explicitly.
3171        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3172
3173        # Someone might think of using the pre-installed headers on
3174        # Canadian crosses, in case the installed compiler is not fully
3175        # compatible with the compiler being built.  In this case, it
3176        # would be better to flag an error than risking having
3177        # incompatible object files being constructed.  We can't
3178        # guarantee that an error will be flagged, but let's hope the
3179        # compiler will do it, when presented with incompatible header
3180        # files.
3181      fi
3182    fi
3183
3184    case "${target}-${is_cross_compiler}" in
3185    i[[3456789]]86-*-linux*-no)
3186       # Here host == target, so we don't need to build gcc,
3187       # so we don't want to discard standard headers.
3188       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3189       ;;
3190    *)
3191       # If we're building newlib, use its generic headers last, but search
3192       # for any libc-related directories first (so make it the last -B
3193       # switch).
3194       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3195
3196       # If we're building libgloss, find the startup file, simulator library
3197       # and linker script.
3198       case " $target_configdirs " in
3199         *" libgloss "*)
3200         # Look for startup file, simulator library and maybe linker script.
3201         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3202         # Look for libnosys.a in case the target needs it.
3203         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3204         # Most targets have the linker script in the source directory.
3205         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3206         ;;
3207       esac
3208       ;;
3209    esac
3210    ;;
3211   esac
3212   ;;
3213 esac
3214
3215 case "$target" in
3216   x86_64-*mingw* | *-w64-mingw*)
3217   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3218   # however, use a symlink named 'mingw' in ${prefix} .
3219     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3220     ;;
3221   *-mingw*)
3222   # MinGW can't be handled as Cygwin above since it does not use newlib.
3223     FLAGS_FOR_TARGET=$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'
3224     ;;
3225 esac
3226
3227 # Allow the user to override the flags for
3228 # our build compiler if desired.
3229 if test x"${build}" = x"${host}" ; then
3230   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3231   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3232   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3233 fi
3234
3235 # On Canadian crosses, we'll be searching the right directories for
3236 # the previously-installed cross compiler, so don't bother to add
3237 # flags for directories within the install tree of the compiler
3238 # being built; programs in there won't even run.
3239 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3240   # Search for pre-installed headers if nothing else fits.
3241   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3242 fi
3243
3244 if test "x${use_gnu_ld}" = x &&
3245    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3246   # Arrange for us to find uninstalled linker scripts.
3247   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3248 fi
3249
3250 # Search for other target-specific linker scripts and such.
3251 case "${target}" in
3252   mep*)
3253     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3254     ;;
3255 esac
3256
3257 # Makefile fragments.
3258 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3259 do
3260   eval fragval=\$$frag
3261   if test $fragval != /dev/null; then
3262     eval $frag=${srcdir}/$fragval
3263   fi
3264 done
3265 AC_SUBST_FILE(host_makefile_frag)
3266 AC_SUBST_FILE(target_makefile_frag)
3267 AC_SUBST_FILE(alphaieee_frag)
3268 AC_SUBST_FILE(ospace_frag)
3269
3270 # Miscellanea: directories, flags, etc.
3271 AC_SUBST(RPATH_ENVVAR)
3272 AC_SUBST(GCC_SHLIB_SUBDIR)
3273 AC_SUBST(tooldir)
3274 AC_SUBST(build_tooldir)
3275 AC_SUBST(CONFIGURE_GDB_TK)
3276 AC_SUBST(GDB_TK)
3277 AC_SUBST(INSTALL_GDB_TK)
3278
3279 # Build module lists & subconfigure args.
3280 AC_SUBST(build_configargs)
3281 AC_SUBST(build_configdirs)
3282
3283 # Host module lists & subconfigure args.
3284 AC_SUBST(host_configargs)
3285 AC_SUBST(configdirs)
3286 AC_SUBST(target_configdirs)
3287
3288 # Target module lists & subconfigure args.
3289 AC_SUBST(target_configargs)
3290
3291
3292 # Build tools.
3293 AC_SUBST(AR_FOR_BUILD)
3294 AC_SUBST(AS_FOR_BUILD)
3295 AC_SUBST(CC_FOR_BUILD)
3296 AC_SUBST(CFLAGS_FOR_BUILD)
3297 AC_SUBST(CXXFLAGS_FOR_BUILD)
3298 AC_SUBST(CXX_FOR_BUILD)
3299 AC_SUBST(DLLTOOL_FOR_BUILD)
3300 AC_SUBST(GCJ_FOR_BUILD)
3301 AC_SUBST(GFORTRAN_FOR_BUILD)
3302 AC_SUBST(GOC_FOR_BUILD)
3303 AC_SUBST(LDFLAGS_FOR_BUILD)
3304 AC_SUBST(LD_FOR_BUILD)
3305 AC_SUBST(NM_FOR_BUILD)
3306 AC_SUBST(RANLIB_FOR_BUILD)
3307 AC_SUBST(WINDMC_FOR_BUILD)
3308 AC_SUBST(WINDRES_FOR_BUILD)
3309
3310 # Generate default definitions for YACC, M4, LEX and other programs that run
3311 # on the build machine.  These are used if the Makefile can't locate these
3312 # programs in objdir.
3313 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3314
3315 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3316 case " $build_configdirs " in
3317   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3318 esac
3319
3320 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3321 case " $build_configdirs " in
3322   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3323 esac
3324
3325 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3326 case " $build_configdirs " in
3327   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3328 esac
3329
3330 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3331 case " $build_configdirs " in
3332   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3333   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3334 esac
3335
3336 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3337 case " $build_configdirs " in
3338   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3339 esac
3340
3341 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3342 case " $build_configdirs " in
3343   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3344   *)
3345 changequote(,)
3346     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3347     # higher, else we use the "missing" dummy.
3348     if ${MAKEINFO} --version \
3349        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3350       :
3351     else
3352       MAKEINFO="$MISSING makeinfo"
3353     fi
3354     ;;
3355 changequote([,])
3356 esac
3357
3358 # FIXME: expect and dejagnu may become build tools?
3359
3360 AC_CHECK_PROGS(EXPECT, expect, expect)
3361 case " $configdirs " in
3362   *" expect "*)
3363     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3364     ;;
3365 esac
3366
3367 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3368 case " $configdirs " in
3369   *" dejagnu "*)
3370     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3371     ;;
3372 esac
3373
3374
3375 # Host tools.
3376 NCN_STRICT_CHECK_TOOLS(AR, ar)
3377 NCN_STRICT_CHECK_TOOLS(AS, as)
3378 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3379 NCN_STRICT_CHECK_TOOLS(LD, ld)
3380 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3381 NCN_STRICT_CHECK_TOOLS(NM, nm)
3382 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3383 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3384 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3385 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3386 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3387 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3388 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3389 AC_SUBST(CC)
3390 AC_SUBST(CXX)
3391 AC_SUBST(CFLAGS)
3392 AC_SUBST(CXXFLAGS)
3393
3394 # Target tools.
3395 AC_ARG_WITH([build-time-tools],
3396   [AS_HELP_STRING([--with-build-time-tools=PATH],
3397                   [use given path to find target tools during the build])],
3398   [case x"$withval" in
3399      x/*) ;;
3400      *)
3401        with_build_time_tools=
3402        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3403        ;;
3404    esac],
3405   [with_build_time_tools=])
3406
3407 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3408 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3409 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3410 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3411 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3412 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3413
3414 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3415 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3416 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3417 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3418 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3419 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3420 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3421 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3422 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3423 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3424 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3425 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3426 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3427
3428 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3429
3430 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3431 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3432 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3433 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3434 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3435                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3436                 c++)
3437 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3438                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3439                 c++)
3440 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3441 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3442 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3443                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3444 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3445                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3446 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3447                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3448 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3449 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3450 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3451 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3452 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3453 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3454 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3455 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3456 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3457 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3458
3459 AC_SUBST(FLAGS_FOR_TARGET)
3460 AC_SUBST(RAW_CXX_FOR_TARGET)
3461
3462 # Certain tools may need extra flags.
3463 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3464 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3465 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3466
3467 # When building target libraries, except in a Canadian cross, we use
3468 # the same toolchain as the compiler we just built.
3469 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3470 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3471 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3472 if test $host = $build; then
3473   case " $configdirs " in
3474     *" gcc "*)
3475       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3476       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3477       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3478       ;;
3479   esac
3480 fi
3481
3482 AC_SUBST(COMPILER_AS_FOR_TARGET)
3483 AC_SUBST(COMPILER_LD_FOR_TARGET)
3484 AC_SUBST(COMPILER_NM_FOR_TARGET)
3485
3486 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3487 AC_ARG_ENABLE(maintainer-mode,
3488 [AS_HELP_STRING([--enable-maintainer-mode],
3489                 [enable make rules and dependencies not useful
3490                  (and sometimes confusing) to the casual installer])],
3491       USE_MAINTAINER_MODE=$enableval,
3492       USE_MAINTAINER_MODE=no)
3493 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3494 AC_SUBST(MAINTAINER_MODE_TRUE)
3495 AC_SUBST(MAINTAINER_MODE_FALSE)
3496 if test "$USE_MAINTAINER_MODE" = yes; then
3497   MAINTAINER_MODE_TRUE=
3498   MAINTAINER_MODE_FALSE='#'
3499 else
3500   MAINTAINER_MODE_TRUE='#'
3501   MAINTAINER_MODE_FALSE=
3502 fi
3503 MAINT=$MAINTAINER_MODE_TRUE
3504 AC_SUBST(MAINT)dnl
3505
3506 # ---------------------
3507 # GCC bootstrap support
3508 # ---------------------
3509
3510 # Stage specific cflags for build.
3511 stage1_cflags="-g"
3512 case $build in
3513   vax-*-*)
3514     case ${GCC} in
3515       yes) stage1_cflags="-g -Wa,-J" ;;
3516       *) stage1_cflags="-g -J" ;;
3517     esac ;;
3518 esac
3519
3520 AC_SUBST(stage1_cflags)
3521
3522 # Enable --enable-checking in stage1 of the compiler.
3523 AC_ARG_ENABLE(stage1-checking,
3524 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3525                 [choose additional checking for stage1 of the compiler])],
3526 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3527 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3528   # For --disable-checking or implicit --enable-checking=release, avoid
3529   # setting --enable-checking=gc in the default stage1 checking for LTO
3530   # bootstraps.  See PR62077.
3531   case $BUILD_CONFIG in
3532     *lto*)
3533       stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3534     *)
3535       stage1_checking=--enable-checking=yes,types;;
3536   esac
3537   if test "x$enable_checking" = x && \
3538      test -d ${srcdir}/gcc && \
3539      test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3540     stage1_checking=yes,types,extra
3541   fi
3542 else
3543   stage1_checking=--enable-checking=$enable_checking,types
3544 fi])
3545 AC_SUBST(stage1_checking)
3546
3547 # Enable -Werror in bootstrap stage2 and later.
3548 AC_ARG_ENABLE(werror,
3549 [AS_HELP_STRING([--enable-werror],
3550                 [enable -Werror in bootstrap stage2 and later])], [],
3551 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3552   enable_werror=yes
3553 else
3554   enable_werror=no
3555 fi])
3556 case ${enable_werror} in
3557   yes) stage2_werror_flag="--enable-werror-always" ;;
3558   *) stage2_werror_flag="" ;;
3559 esac
3560 AC_SUBST(stage2_werror_flag)
3561
3562 # Enable --enable-host-shared.
3563 AC_ARG_ENABLE(host-shared,
3564 [AS_HELP_STRING([--enable-host-shared],
3565                 [build host code as shared libraries])],
3566 [host_shared=$enableval], [host_shared=no])
3567 AC_SUBST(host_shared)
3568
3569 # PR jit/64780: Require the user to explicitly specify
3570 # --enable-host-shared if the jit is enabled, hinting
3571 # that they might want to do a separate configure/build of
3572 # the jit, to avoid users from slowing down the rest of the
3573 # compiler by enabling the jit.
3574 if test ${host_shared} = "no" ; then
3575   case "${enable_languages}" in
3576     *jit*)
3577       AC_MSG_ERROR([
3578 Enabling language "jit" requires --enable-host-shared.
3579
3580 --enable-host-shared typically slows the rest of the compiler down by
3581 a few %, so you must explicitly enable it.
3582
3583 If you want to build both the jit and the regular compiler, it is often
3584 best to do this via two separate configure/builds, in separate
3585 directories, to avoid imposing the performance cost of
3586 --enable-host-shared on the regular compiler.])
3587       ;;
3588     *)
3589       ;;
3590   esac
3591 fi
3592
3593 # Specify what files to not compare during bootstrap.
3594
3595 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3596 case "$target" in
3597   hppa*64*-*-hpux*) ;;
3598   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3599   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3600 esac
3601 AC_SUBST(compare_exclusions)
3602
3603 AC_CONFIG_FILES([Makefile],
3604   [sed "$extrasub_build" Makefile |
3605    sed "$extrasub_host" |
3606    sed "$extrasub_target" > mf$$
3607    mv -f mf$$ Makefile],
3608   [extrasub_build="$extrasub_build"
3609    extrasub_host="$extrasub_host"
3610    extrasub_target="$extrasub_target"])
3611 AC_OUTPUT