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