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, 2014
   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 libcc1"
 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   if test "$enable_lto" = "yes" ; then
1856     case ,${enable_languages}, in
1857       *,lto,*) ;;
1858       *) enable_languages="${enable_languages},lto" ;;
1859     esac
1860     if test "${build_lto_plugin}" = "yes" ; then
1861       configdirs="$configdirs lto-plugin"
1862     fi
1863   fi
1864
1865   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1866   potential_languages=,c,
1867
1868   enabled_target_libs=
1869   disabled_target_libs=
1870
1871   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1872     case ${lang_frag} in
1873       ..) ;;
1874       # The odd quoting in the next line works around
1875       # an apparent bug in bash 1.12 on linux.
1876       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1877       *)
1878         # From the config-lang.in, get $language, $target_libs,
1879         # $lang_dirs, $boot_language, and $build_by_default
1880         language=
1881         target_libs=
1882         lang_dirs=
1883         subdir_requires=
1884         boot_language=no
1885         build_by_default=yes
1886         . ${lang_frag}
1887         if test x${language} = x; then
1888           echo "${lang_frag} doesn't set \$language." 1>&2
1889           exit 1
1890         fi
1891
1892         if test "$language" = "c++"; then
1893           boot_language=yes
1894         fi
1895
1896         add_this_lang=no
1897         case ,${enable_languages}, in
1898           *,${language},*)
1899             # Language was explicitly selected; include it
1900             # unless it is C, which is enabled by default.
1901             if test "$language" != "c"; then
1902               add_this_lang=yes
1903             fi
1904             ;;
1905           *,all,*)
1906             # 'all' was selected, select it if it is a default language
1907             if test "$language" != "c"; then
1908               add_this_lang=${build_by_default}
1909             fi
1910             ;;
1911         esac
1912
1913         # Disable languages that need other directories if these aren't available.
1914         for i in $subdir_requires; do
1915           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1916           case ,${enable_languages}, in
1917             *,${language},*)
1918               # Specifically requested language; tell them.
1919               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1920               ;;
1921             *)
1922               # Silently disable.
1923               add_this_lang=unsupported
1924               ;;
1925           esac
1926         done
1927
1928         # Disable Ada if no preexisting GNAT is available.
1929         case ,${enable_languages},:${language}:${have_gnat} in
1930           *,${language},*:ada:no)
1931             # Specifically requested language; tell them.
1932             AC_MSG_ERROR([GNAT is required to build $language])
1933             ;;
1934           *:ada:no)
1935             # Silently disable.
1936             add_this_lang=unsupported
1937             ;;
1938         esac
1939
1940         # Disable a language that is unsupported by the target.
1941         case " $unsupported_languages " in
1942           *" $language "*)
1943             add_this_lang=unsupported
1944             ;;
1945         esac
1946
1947         case $add_this_lang in
1948           unsupported)
1949             # Remove language-dependent dirs.
1950             disabled_target_libs="$disabled_target_libs $target_libs"
1951             noconfigdirs="$noconfigdirs $lang_dirs"
1952             ;;
1953           no)
1954             # Remove language-dependent dirs; still show language as supported.
1955             disabled_target_libs="$disabled_target_libs $target_libs"
1956             noconfigdirs="$noconfigdirs $lang_dirs"
1957             potential_languages="${potential_languages}${language},"
1958             ;;
1959           yes)
1960             new_enable_languages="${new_enable_languages}${language},"
1961             potential_languages="${potential_languages}${language},"
1962             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1963             enabled_target_libs="$enabled_target_libs $target_libs"
1964             case "${boot_language}:,$enable_stage1_languages," in
1965               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1966                 # Add to (comma-separated) list of stage 1 languages.
1967                 case ",$stage1_languages," in
1968                   *,$language,* | ,yes, | ,all,) ;;
1969                   *) stage1_languages="${stage1_languages}${language}," ;;
1970                 esac
1971                 # We need to bootstrap any supporting libraries.
1972                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1973                 ;;
1974             esac
1975             ;;
1976         esac
1977         ;;
1978     esac
1979   done
1980
1981   # Add target libraries which are only needed for disabled languages
1982   # to noconfigdirs.
1983   if test -n "$disabled_target_libs"; then
1984     for dir in $disabled_target_libs; do
1985       case " $enabled_target_libs " in
1986       *" ${dir} "*) ;;
1987       *) noconfigdirs="$noconfigdirs $dir" ;;
1988       esac
1989     done
1990   fi
1991
1992   AC_ARG_ENABLE(stage1-languages,
1993   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1994                   [choose additional languages to build during
1995                   stage1.  Mostly useful for compiler development])],
1996   [case ,${enable_stage1_languages}, in
1997     ,no,|,,)
1998       # Set it to something that will have no effect in the loop below
1999       enable_stage1_languages=c ;;
2000     ,yes,)
2001       enable_stage1_languages=`echo $new_enable_languages | \
2002         sed -e "s/^,//" -e "s/,$//" ` ;;
2003     *,all,*)
2004       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2005         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2006   esac
2007
2008   # Add "good" languages from enable_stage1_languages to stage1_languages,
2009   # while "bad" languages go in missing_languages.  Leave no duplicates.
2010   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2011     case $potential_languages in
2012       *,$i,*)
2013         case $stage1_languages in
2014           *,$i,*) ;;
2015           *) stage1_languages="$stage1_languages$i," ;;
2016         esac ;;
2017       *)
2018         case $missing_languages in
2019           *,$i,*) ;;
2020           *) missing_languages="$missing_languages$i," ;;
2021         esac ;;
2022      esac
2023   done])
2024
2025   # Remove leading/trailing commas that were added for simplicity
2026   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2027   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2028   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2029   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2030
2031   if test "x$missing_languages" != x; then
2032     AC_MSG_ERROR([
2033 The following requested languages could not be built: ${missing_languages}
2034 Supported languages are: ${potential_languages}])
2035   fi
2036   if test "x$new_enable_languages" != "x$enable_languages"; then
2037     echo The following languages will be built: ${new_enable_languages}
2038     enable_languages="$new_enable_languages"
2039   fi
2040
2041   AC_SUBST(stage1_languages)
2042   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2043 fi
2044
2045 # Handle --disable-<component> generically.
2046 for dir in $configdirs $build_configdirs $target_configdirs ; do
2047   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2048   varname=`echo $dirname | sed -e s/+/_/g`
2049   if eval test x\${enable_${varname}} "=" xno ; then
2050     noconfigdirs="$noconfigdirs $dir"
2051   fi
2052 done
2053
2054 # Check for Boehm's garbage collector
2055 AC_ARG_ENABLE(objc-gc,
2056 [AS_HELP_STRING([--enable-objc-gc],
2057                 [enable use of Boehm's garbage collector with the
2058                  GNU Objective-C runtime])],
2059 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2060   *,objc,*:*:yes:*target-boehm-gc*)
2061     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2062     ;;
2063 esac])
2064
2065 # Make sure we only build Boehm's garbage collector if required.
2066 case ,${enable_languages},:${enable_objc_gc} in
2067   *,objc,*:yes)
2068     # Keep target-boehm-gc if requested for Objective-C.
2069     ;;
2070   *)
2071     # Otherwise remove target-boehm-gc depending on target-libjava.
2072     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2073       noconfigdirs="$noconfigdirs target-boehm-gc"
2074     fi
2075     ;;
2076 esac
2077
2078 # Disable libcilkrts, libitm, libsanitizer, libvtv if we're not building C++
2079 case ,${enable_languages}, in
2080   *,c++,*)
2081     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2082     case "${noconfigdirs}" in
2083       *target-libstdc++-v3*)
2084         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2085         ;;
2086       *) ;;
2087     esac
2088     ;;
2089   *)
2090     noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer target-libvtv"
2091     ;;
2092 esac
2093
2094 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2095 # $build_configdirs and $target_configdirs.
2096 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2097
2098 notsupp=""
2099 for dir in . $skipdirs $noconfigdirs ; do
2100   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2101   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2102     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2103     if test -r $srcdir/$dirname/configure ; then
2104       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2105         true
2106       else
2107         notsupp="$notsupp $dir"
2108       fi
2109     fi
2110   fi
2111   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2112     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2113     if test -r $srcdir/$dirname/configure ; then
2114       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2115         true
2116       else
2117         notsupp="$notsupp $dir"
2118       fi
2119     fi
2120   fi
2121   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2122     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2123     if test -r $srcdir/$dirname/configure ; then
2124       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2125         true
2126       else
2127         notsupp="$notsupp $dir"
2128       fi
2129     fi
2130   fi
2131 done
2132
2133 # Quietly strip out all directories which aren't configurable in this tree.
2134 # This relies on all configurable subdirectories being autoconfiscated, which
2135 # is now the case.
2136 build_configdirs_all="$build_configdirs"
2137 build_configdirs=
2138 for i in ${build_configdirs_all} ; do
2139   j=`echo $i | sed -e s/build-//g`
2140   if test -f ${srcdir}/$j/configure ; then
2141     build_configdirs="${build_configdirs} $i"
2142   fi
2143 done
2144
2145 configdirs_all="$configdirs"
2146 configdirs=
2147 for i in ${configdirs_all} ; do
2148   if test -f ${srcdir}/$i/configure ; then
2149     configdirs="${configdirs} $i"
2150   fi
2151 done
2152
2153 target_configdirs_all="$target_configdirs"
2154 target_configdirs=
2155 for i in ${target_configdirs_all} ; do
2156   j=`echo $i | sed -e s/target-//g`
2157   if test -f ${srcdir}/$j/configure ; then
2158     target_configdirs="${target_configdirs} $i"
2159   fi
2160 done
2161
2162 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2163 # so we have to add it after the preceding checks.
2164 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2165 then
2166   case " $configdirs " in
2167     *" libiberty "*)
2168       # If we can build libiberty, we can also build libiberty-linker-plugin.
2169       configdirs="$configdirs libiberty-linker-plugin"
2170       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2171         --with-libiberty=../libiberty-linker-plugin";;
2172     *)
2173       AC_MSG_ERROR([libiberty missing]);;
2174   esac
2175 fi
2176
2177 # Sometimes we have special requirements for the host libiberty.
2178 extra_host_libiberty_configure_flags=
2179 case " $configdirs " in
2180   *" lto-plugin "* | *" libcc1 "*)
2181     # When these are to be built as shared libraries, the same applies to
2182     # libiberty.
2183     extra_host_libiberty_configure_flags=--enable-shared
2184     ;;
2185 esac
2186 AC_SUBST(extra_host_libiberty_configure_flags)
2187
2188 # Produce a warning message for the subdirs we can't configure.
2189 # This isn't especially interesting in the Cygnus tree, but in the individual
2190 # FSF releases, it's important to let people know when their machine isn't
2191 # supported by the one or two programs in a package.
2192
2193 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2194   # If $appdirs is non-empty, at least one of those directories must still
2195   # be configured, or we error out.  (E.g., if the gas release supports a
2196   # specified target in some subdirs but not the gas subdir, we shouldn't
2197   # pretend that all is well.)
2198   if test -n "$appdirs" ; then
2199     for dir in $appdirs ; do
2200       if test -r $dir/Makefile.in ; then
2201         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2202           appdirs=""
2203           break
2204         fi
2205         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2206           appdirs=""
2207           break
2208         fi
2209       fi
2210     done
2211     if test -n "$appdirs" ; then
2212       echo "*** This configuration is not supported by this package." 1>&2
2213       exit 1
2214     fi
2215   fi
2216   # Okay, some application will build, or we don't care to check.  Still
2217   # notify of subdirs not getting built.
2218   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2219   echo "    ${notsupp}" 1>&2
2220   echo "    (Any other directories should still work fine.)" 1>&2
2221 fi
2222
2223 case "$host" in
2224   *msdosdjgpp*)
2225     enable_gdbtk=no ;;
2226 esac
2227
2228 # To find our prefix, in gcc_cv_tool_prefix.
2229 ACX_TOOL_DIRS
2230
2231 copy_dirs=
2232
2233 AC_ARG_WITH([build-sysroot],
2234   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2235                   [use sysroot as the system root during the build])],
2236   [if test x"$withval" != x ; then
2237      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2238    fi],
2239   [SYSROOT_CFLAGS_FOR_TARGET=])
2240 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2241
2242 AC_ARG_WITH([debug-prefix-map],
2243   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2244                   [map A to B, C to D ... in debug information])],
2245   [if test x"$withval" != x; then
2246      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2247      for debug_map in $withval; do
2248        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2249      done
2250    fi],
2251   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2252 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2253
2254 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2255 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2256 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2257 # We want to ensure that TARGET libraries (which we know are built with
2258 # gcc) are built with "-O2 -g", so include those options when setting
2259 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2260 if test "x$CFLAGS_FOR_TARGET" = x; then
2261   CFLAGS_FOR_TARGET=$CFLAGS
2262   case " $CFLAGS " in
2263     *" -O2 "*) ;;
2264     *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2265   esac
2266   case " $CFLAGS " in
2267     *" -g "* | *" -g3 "*) ;;
2268     *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2269   esac
2270 fi
2271 AC_SUBST(CFLAGS_FOR_TARGET)
2272
2273 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2274   CXXFLAGS_FOR_TARGET=$CXXFLAGS
2275   case " $CXXFLAGS " in
2276     *" -O2 "*) ;;
2277     *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2278   esac
2279   case " $CXXFLAGS " in
2280     *" -g "* | *" -g3 "*) ;;
2281     *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2282   esac
2283 fi
2284 AC_SUBST(CXXFLAGS_FOR_TARGET)
2285
2286 AC_SUBST(LDFLAGS_FOR_TARGET)
2287
2288 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2289 # the named directory are copied to $(tooldir)/sys-include.
2290 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2291   if test x${is_cross_compiler} = xno ; then
2292     echo 1>&2 '***' --with-headers is only supported when cross compiling
2293     exit 1
2294   fi
2295   if test x"${with_headers}" != xyes ; then
2296     x=${gcc_cv_tool_prefix}
2297     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2298   fi
2299 fi
2300
2301 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2302 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2303 # are permitted.
2304 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2305   if test x${is_cross_compiler} = xno ; then
2306     echo 1>&2 '***' --with-libs is only supported when cross compiling
2307     exit 1
2308   fi
2309   if test x"${with_libs}" != xyes ; then
2310     # Copy the libraries in reverse order, so that files in the first named
2311     # library override files in subsequent libraries.
2312     x=${gcc_cv_tool_prefix}
2313     for l in ${with_libs}; do
2314       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2315     done
2316   fi
2317 fi
2318
2319 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2320 #
2321 # This is done by determining whether or not the appropriate directory
2322 # is available, and by checking whether or not specific configurations
2323 # have requested that this magic not happen.
2324 #
2325 # The command line options always override the explicit settings in
2326 # configure.in, and the settings in configure.in override this magic.
2327 #
2328 # If the default for a toolchain is to use GNU as and ld, and you don't
2329 # want to do that, then you should use the --without-gnu-as and
2330 # --without-gnu-ld options for the configure script.  Similarly, if
2331 # the default is to use the included zlib and you don't want to do that,
2332 # you should use the --with-system-zlib option for the configure script.
2333
2334 if test x${use_gnu_as} = x &&
2335    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2336   with_gnu_as=yes
2337   extra_host_args="$extra_host_args --with-gnu-as"
2338 fi
2339
2340 if test x${use_gnu_ld} = x &&
2341    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2342   with_gnu_ld=yes
2343   extra_host_args="$extra_host_args --with-gnu-ld"
2344 fi
2345
2346 if test x${use_included_zlib} = x &&
2347    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2348   :
2349 else
2350   with_system_zlib=yes
2351   extra_host_args="$extra_host_args --with-system-zlib"
2352 fi
2353
2354 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2355 # can detect this case.
2356
2357 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2358   with_newlib=yes
2359   extra_host_args="$extra_host_args --with-newlib"
2360 fi
2361
2362 # Handle ${copy_dirs}
2363 set fnord ${copy_dirs}
2364 shift
2365 while test $# != 0 ; do
2366   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2367     :
2368   else
2369     echo Copying $1 to $2
2370
2371     # Use the install script to create the directory and all required
2372     # parent directories.
2373     if test -d $2 ; then
2374       :
2375     else
2376       echo >config.temp
2377       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2378     fi
2379
2380     # Copy the directory, assuming we have tar.
2381     # FIXME: Should we use B in the second tar?  Not all systems support it.
2382     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2383
2384     # It is the responsibility of the user to correctly adjust all
2385     # symlinks.  If somebody can figure out how to handle them correctly
2386     # here, feel free to add the code.
2387
2388     echo $1 > $2/COPIED
2389   fi
2390   shift; shift
2391 done
2392
2393 # Determine a target-dependent exec_prefix that the installed
2394 # gcc will search in.  Keep this list sorted by triplet, with
2395 # the *-*-osname triplets last.
2396 md_exec_prefix=
2397 case "${target}" in
2398   i[[34567]]86-pc-msdosdjgpp*)
2399     md_exec_prefix=/dev/env/DJDIR/bin
2400     ;;
2401   *-*-hpux* | \
2402   *-*-nto-qnx* | \
2403   *-*-solaris2*)
2404     md_exec_prefix=/usr/ccs/bin
2405     ;;
2406 esac
2407
2408 extra_arflags_for_target=
2409 extra_nmflags_for_target=
2410 extra_ranlibflags_for_target=
2411 target_makefile_frag=/dev/null
2412 case "${target}" in
2413   spu-*-*)
2414     target_makefile_frag="config/mt-spu"
2415     ;;
2416   mips*-sde-elf* | mips*-mti-elf*)
2417     target_makefile_frag="config/mt-sde"
2418     ;;
2419   mipsisa*-*-elfoabi*)
2420     target_makefile_frag="config/mt-mips-elfoabi"
2421     ;;
2422   mips*-*-*linux* | mips*-*-gnu*)
2423     target_makefile_frag="config/mt-mips-gnu"
2424     ;;
2425   nios2-*-elf*)
2426     target_makefile_frag="config/mt-nios2-elf"
2427     ;;
2428   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2429     target_makefile_frag="config/mt-gnu"
2430     ;;
2431   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2432     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2433     # commands to handle both 32-bit and 64-bit objects.  These flags are
2434     # harmless if we're using GNU nm or ar.
2435     extra_arflags_for_target=" -X32_64"
2436     extra_nmflags_for_target=" -B -X32_64"
2437     ;;
2438 esac
2439
2440 alphaieee_frag=/dev/null
2441 case $target in
2442   alpha*-*-*)
2443     # This just makes sure to use the -mieee option to build target libs.
2444     # This should probably be set individually by each library.
2445     alphaieee_frag="config/mt-alphaieee"
2446     ;;
2447 esac
2448
2449 # If --enable-target-optspace always use -Os instead of -O2 to build
2450 # the target libraries, similarly if it is not specified, use -Os
2451 # on selected platforms.
2452 ospace_frag=/dev/null
2453 case "${enable_target_optspace}:${target}" in
2454   yes:*)
2455     ospace_frag="config/mt-ospace"
2456     ;;
2457   :d30v-*)
2458     ospace_frag="config/mt-d30v"
2459     ;;
2460   :m32r-* | :d10v-* | :fr30-*)
2461     ospace_frag="config/mt-ospace"
2462     ;;
2463   no:* | :*)
2464     ;;
2465   *)
2466     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2467     ;;
2468 esac
2469
2470 # Some systems (e.g., one of the i386-aix systems the gas testers are
2471 # using) don't handle "\$" correctly, so don't use it here.
2472 tooldir='${exec_prefix}'/${target_noncanonical}
2473 build_tooldir=${tooldir}
2474
2475 # Create a .gdbinit file which runs the one in srcdir
2476 # and tells GDB to look there for source files.
2477
2478 if test -r ${srcdir}/.gdbinit ; then
2479   case ${srcdir} in
2480     .) ;;
2481     *) cat > ./.gdbinit <<EOF
2482 # ${NO_EDIT}
2483 dir ${srcdir}
2484 dir .
2485 source ${srcdir}/.gdbinit
2486 EOF
2487     ;;
2488   esac
2489 fi
2490
2491 # Make sure that the compiler is able to generate an executable.  If it
2492 # can't, we are probably in trouble.  We don't care whether we can run the
2493 # executable--we might be using a cross compiler--we only care whether it
2494 # can be created.  At this point the main configure script has set CC.
2495 we_are_ok=no
2496 echo "int main () { return 0; }" > conftest.c
2497 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2498 if test $? = 0 ; then
2499   if test -s conftest || test -s conftest.exe ; then
2500     we_are_ok=yes
2501   fi
2502 fi
2503 case $we_are_ok in
2504   no)
2505     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2506     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2507     rm -f conftest*
2508     exit 1
2509     ;;
2510 esac
2511 rm -f conftest*
2512
2513 # Decide which environment variable is used to find dynamic libraries.
2514 case "${host}" in
2515   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2516   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2517   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2518   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2519 esac
2520
2521 # On systems where the dynamic library environment variable is PATH,
2522 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2523 # built executables to PATH.
2524 if test "$RPATH_ENVVAR" = PATH; then
2525   GCC_SHLIB_SUBDIR=/shlib
2526 else
2527   GCC_SHLIB_SUBDIR=
2528 fi
2529
2530 # Adjust the toplevel makefile according to whether bootstrap was selected.
2531 case $enable_bootstrap in
2532   yes)
2533     bootstrap_suffix=bootstrap
2534     BUILD_CONFIG=bootstrap-debug
2535     ;;
2536   no)
2537     bootstrap_suffix=no-bootstrap
2538     BUILD_CONFIG=
2539     ;;
2540 esac
2541
2542 AC_MSG_CHECKING(for default BUILD_CONFIG)
2543
2544 AC_ARG_WITH([build-config],
2545   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2546                   [use config/NAME.mk build configuration])],
2547   [case $with_build_config in
2548    yes) with_build_config= ;;
2549    no) with_build_config= BUILD_CONFIG= ;;
2550    esac])
2551
2552 if test "x${with_build_config}" != x; then
2553   BUILD_CONFIG=$with_build_config
2554 else
2555   case $BUILD_CONFIG in
2556   bootstrap-debug)
2557     if echo "int f (void) { return 0; }" > conftest.c &&
2558        ${CC} -c conftest.c &&
2559        mv conftest.o conftest.o.g0 &&
2560        ${CC} -c -g conftest.c &&
2561        mv conftest.o conftest.o.g &&
2562        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2563       :
2564     else
2565       BUILD_CONFIG=
2566     fi
2567     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2568     ;;
2569   esac
2570 fi
2571 AC_MSG_RESULT($BUILD_CONFIG)
2572 AC_SUBST(BUILD_CONFIG)
2573
2574 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2575 AC_MSG_CHECKING([for --enable-vtable-verify])
2576 AC_ARG_ENABLE(vtable-verify,
2577 [  --enable-vtable-verify    Enable vtable verification feature ],
2578 [case "$enableval" in
2579  yes) enable_vtable_verify=yes ;;
2580  no)  enable_vtable_verify=no ;;
2581  *)   enable_vtable_verify=no;;
2582  esac],
2583 [enable_vtable_verify=no])
2584 AC_MSG_RESULT($enable_vtable_verify)
2585
2586 # Record target_configdirs and the configure arguments for target and
2587 # build configuration in Makefile.
2588 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2589 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2590 bootstrap_fixincludes=no
2591
2592 # If we are building libgomp, bootstrap it.
2593 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2594   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2595 fi
2596
2597 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2598 # or bootstrap-ubsan, bootstrap it.
2599 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2600   case "$BUILD_CONFIG" in
2601     *bootstrap-asan* | *bootstrap-ubsan* )
2602       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2603       bootstrap_fixincludes=yes
2604       ;;
2605   esac
2606 fi
2607
2608 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2609 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2610    test "$enable_vtable_verify" != no; then
2611   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2612 fi
2613
2614 # Determine whether gdb needs tk/tcl or not.
2615 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2616 # and in that case we want gdb to be built without tk.  Ugh!
2617 # In fact I believe gdb is the *only* package directly dependent on tk,
2618 # so we should be able to put the 'maybe's in unconditionally and
2619 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2620 # 100% sure that that's safe though.
2621
2622 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2623 case "$enable_gdbtk" in
2624   no)
2625     GDB_TK="" ;;
2626   yes)
2627     GDB_TK="${gdb_tk}" ;;
2628   *)
2629     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2630     # distro.  Eventually someone will fix this and move Insight, nee
2631     # gdbtk to a separate directory.
2632     if test -d ${srcdir}/gdb/gdbtk ; then
2633       GDB_TK="${gdb_tk}"
2634     else
2635       GDB_TK=""
2636     fi
2637     ;;
2638 esac
2639 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2640 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2641
2642 # Strip out unwanted targets.
2643
2644 # While at that, we remove Makefiles if we were started for recursive
2645 # configuration, so that the top-level Makefile reconfigures them,
2646 # like we used to do when configure itself was recursive.
2647
2648 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2649 # but now we're fixing up the Makefile ourselves with the additional
2650 # commands passed to AC_CONFIG_FILES.  Use separate variables
2651 # extrasub-{build,host,target} not because there is any reason to split
2652 # the substitutions up that way, but only to remain below the limit of
2653 # 99 commands in a script, for HP-UX sed.
2654 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2655
2656 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2657   yes:yes:*\ gold\ *:*,c++,*) ;;
2658   yes:yes:*\ gold\ *:*)
2659     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2660     ;;
2661 esac
2662
2663 extrasub_build=
2664 for module in ${build_configdirs} ; do
2665   if test -z "${no_recursion}" \
2666      && test -f ${build_subdir}/${module}/Makefile; then
2667     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2668     rm -f ${build_subdir}/${module}/Makefile
2669   fi
2670   extrasub_build="$extrasub_build
2671 /^@if build-$module\$/d
2672 /^@endif build-$module\$/d
2673 /^@if build-$module-$bootstrap_suffix\$/d
2674 /^@endif build-$module-$bootstrap_suffix\$/d"
2675 done
2676 extrasub_host=
2677 for module in ${configdirs} ; do
2678   if test -z "${no_recursion}"; then
2679     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2680       if test -f ${file}; then
2681         echo 1>&2 "*** removing ${file} to force reconfigure"
2682         rm -f ${file}
2683       fi
2684     done
2685   fi
2686   case ${module},${bootstrap_fixincludes} in
2687     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2688     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2689   esac
2690   extrasub_host="$extrasub_host
2691 /^@if $module\$/d
2692 /^@endif $module\$/d
2693 /^@if $module-$host_bootstrap_suffix\$/d
2694 /^@endif $module-$host_bootstrap_suffix\$/d"
2695 done
2696 extrasub_target=
2697 for module in ${target_configdirs} ; do
2698   if test -z "${no_recursion}" \
2699      && test -f ${target_subdir}/${module}/Makefile; then
2700     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2701     rm -f ${target_subdir}/${module}/Makefile
2702   fi
2703
2704   # We only bootstrap target libraries listed in bootstrap_target_libs.
2705   case $bootstrap_target_libs in
2706     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2707     *) target_bootstrap_suffix=no-bootstrap ;;
2708   esac
2709
2710   extrasub_target="$extrasub_target
2711 /^@if target-$module\$/d
2712 /^@endif target-$module\$/d
2713 /^@if target-$module-$target_bootstrap_suffix\$/d
2714 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2715 done
2716
2717 # Do the final fixup along with target modules.
2718 extrasub_target="$extrasub_target
2719 /^@if /,/^@endif /d"
2720
2721 # Create the serialization dependencies.  This uses a temporary file.
2722
2723 AC_ARG_ENABLE([serial-configure],
2724 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2725                 [force sequential configuration of
2726                  sub-packages for the host, target or build
2727                  machine, or all sub-packages])])
2728
2729 case ${enable_serial_configure} in
2730   yes)
2731     enable_serial_build_configure=yes
2732     enable_serial_host_configure=yes
2733     enable_serial_target_configure=yes
2734     ;;
2735 esac
2736
2737 # These force 'configure's to be done one at a time, to avoid problems
2738 # with contention over a shared config.cache.
2739 rm -f serdep.tmp
2740 echo '# serdep.tmp' > serdep.tmp
2741 olditem=
2742 test "x${enable_serial_build_configure}" = xyes &&
2743 for item in ${build_configdirs} ; do
2744   case ${olditem} in
2745     "") ;;
2746     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2747   esac
2748   olditem=${item}
2749 done
2750 olditem=
2751 test "x${enable_serial_host_configure}" = xyes &&
2752 for item in ${configdirs} ; do
2753   case ${olditem} in
2754     "") ;;
2755     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2756   esac
2757   olditem=${item}
2758 done
2759 olditem=
2760 test "x${enable_serial_target_configure}" = xyes &&
2761 for item in ${target_configdirs} ; do
2762   case ${olditem} in
2763     "") ;;
2764     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2765   esac
2766   olditem=${item}
2767 done
2768 serialization_dependencies=serdep.tmp
2769 AC_SUBST_FILE(serialization_dependencies)
2770
2771 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2772 # target, nonopt, and variable assignments.  These are the ones we
2773 # might not want to pass down to subconfigures.  The exception being
2774 # --cache-file=/dev/null, which is used to turn off the use of cache
2775 # files altogether, and which should be passed on to subconfigures.
2776 # Also strip program-prefix, program-suffix, and program-transform-name,
2777 # so that we can pass down a consistent program-transform-name.
2778 baseargs=
2779 tbaseargs=
2780 keep_next=no
2781 skip_next=no
2782 eval "set -- $ac_configure_args"
2783 for ac_arg
2784 do
2785   if test X"$skip_next" = X"yes"; then
2786     skip_next=no
2787     continue
2788   fi
2789   if test X"$keep_next" = X"yes"; then
2790     case $ac_arg in
2791       *\'*)
2792         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2793     esac
2794     baseargs="$baseargs '$ac_arg'"
2795     tbaseargs="$tbaseargs '$ac_arg'"
2796     keep_next=no
2797     continue
2798   fi
2799
2800   # Handle separated arguments.  Based on the logic generated by
2801   # autoconf 2.59.
2802   case $ac_arg in
2803     *=* | --config-cache | -C | -disable-* | --disable-* \
2804       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2805       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2806       | -with-* | --with-* | -without-* | --without-* | --x)
2807       separate_arg=no
2808       ;;
2809     -*)
2810       separate_arg=yes
2811       ;;
2812     *)
2813       separate_arg=no
2814       ;;
2815   esac
2816
2817   skip_targ=no
2818   case $ac_arg in
2819 changequote(,)
2820   --with-* | --without-*)
2821     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2822
2823     case $libopt in
2824     *[-_]include)
2825       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2826       ;;
2827     *[-_]lib)
2828       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2829       ;;
2830     *)
2831       lib=$libopt
2832       ;;
2833     esac
2834 changequote([,])
2835
2836     case $lib in
2837     mpc | mpfr | gmp | isl | cloog)
2838       # If we're processing --with-$lib, --with-$lib-include or
2839       # --with-$lib-lib, for one of the libs above, and target is
2840       # different from host, don't pass the current argument to any
2841       # target library's configure.
2842       if test x$is_cross_compiler = xyes; then
2843         skip_targ=yes
2844       fi
2845       ;;
2846     esac
2847     ;;
2848   esac
2849
2850   case "$ac_arg" in
2851     --cache-file=/dev/null | \
2852     -cache-file=/dev/null )
2853       # Handled here to avoid the test to skip args below.
2854       baseargs="$baseargs '$ac_arg'"
2855       tbaseargs="$tbaseargs '$ac_arg'"
2856       # Assert: $separate_arg should always be no.
2857       keep_next=$separate_arg
2858       ;;
2859     --no*)
2860       continue
2861       ;;
2862     --c* | \
2863     --sr* | \
2864     --ho* | \
2865     --bu* | \
2866     --t* | \
2867     --program-* | \
2868     -cache_file* | \
2869     -srcdir* | \
2870     -host* | \
2871     -build* | \
2872     -target* | \
2873     -program-prefix* | \
2874     -program-suffix* | \
2875     -program-transform-name* )
2876       skip_next=$separate_arg
2877       continue
2878       ;;
2879     -*)
2880       # An option.  Add it.
2881       case $ac_arg in
2882         *\'*)
2883           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2884       esac
2885       baseargs="$baseargs '$ac_arg'"
2886       if test X"$skip_targ" = Xno; then
2887         tbaseargs="$tbaseargs '$ac_arg'"
2888       fi
2889       keep_next=$separate_arg
2890       ;;
2891     *)
2892       # Either a variable assignment, or a nonopt (triplet).  Don't
2893       # pass it down; let the Makefile handle this.
2894       continue
2895       ;;
2896   esac
2897 done
2898 # Remove the initial space we just introduced and, as these will be
2899 # expanded by make, quote '$'.
2900 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2901
2902 # Add in --program-transform-name, after --program-prefix and
2903 # --program-suffix have been applied to it.  Autoconf has already
2904 # doubled dollar signs and backslashes in program_transform_name; we want
2905 # the backslashes un-doubled, and then the entire thing wrapped in single
2906 # quotes, because this will be expanded first by make and then by the shell.
2907 # Also, because we want to override the logic in subdir configure scripts to
2908 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2909 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2910 ${program_transform_name}
2911 EOF_SED
2912 gcc_transform_name=`cat conftestsed.out`
2913 rm -f conftestsed.out
2914 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2915 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2916 if test "$silent" = yes; then
2917   baseargs="$baseargs --silent"
2918   tbaseargs="$tbaseargs --silent"
2919 fi
2920 baseargs="$baseargs --disable-option-checking"
2921 tbaseargs="$tbaseargs --disable-option-checking"
2922
2923 # Record and document user additions to sub configure arguments.
2924 AC_ARG_VAR([build_configargs],
2925            [additional configure arguments for build directories])
2926 AC_ARG_VAR([host_configargs],
2927            [additional configure arguments for host directories])
2928 AC_ARG_VAR([target_configargs],
2929            [additional configure arguments for target directories])
2930
2931 # For the build-side libraries, we just need to pretend we're native,
2932 # and not use the same cache file.  Multilibs are neither needed nor
2933 # desired.  We can't even use the same cache file for all build-side
2934 # libraries, as they're compiled differently; some with C, some with
2935 # C++ or with different feature-enabling options.
2936 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
2937
2938 # For host modules, accept cache file option, or specification as blank.
2939 case "${cache_file}" in
2940 "") # empty
2941   cache_file_option="" ;;
2942 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2943   cache_file_option="--cache-file=${cache_file}" ;;
2944 *) # relative path
2945   cache_file_option="--cache-file=../${cache_file}" ;;
2946 esac
2947
2948 # Host dirs don't like to share a cache file either, horribly enough.
2949 # This seems to be due to autoconf 2.5x stupidity.
2950 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2951
2952 target_configargs="$target_configargs ${tbaseargs}"
2953
2954 # Passing a --with-cross-host argument lets the target libraries know
2955 # whether they are being built with a cross-compiler or being built
2956 # native.  However, it would be better to use other mechanisms to make the
2957 # sorts of decisions they want to make on this basis.  Please consider
2958 # this option to be deprecated.  FIXME.
2959 if test x${is_cross_compiler} = xyes ; then
2960   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
2961 fi
2962
2963 # Special user-friendly check for native x86_64-linux build, if
2964 # multilib is not explicitly enabled.
2965 case "$target:$have_compiler:$host:$target:$enable_multilib" in
2966   x86_64-*linux*:yes:$build:$build:)
2967     # Make sure we have a developement environment that handles 32-bit
2968     dev64=no
2969     echo "int main () { return 0; }" > conftest.c
2970     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2971     if test $? = 0 ; then
2972       if test -s conftest || test -s conftest.exe ; then
2973         dev64=yes
2974       fi
2975     fi
2976     rm -f conftest*
2977     if test x${dev64} != xyes ; then
2978       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.])
2979     fi
2980     ;;
2981 esac
2982
2983 # Default to --enable-multilib.
2984 if test x${enable_multilib} = x ; then
2985   target_configargs="--enable-multilib ${target_configargs}"
2986 fi
2987
2988 # Pass --with-newlib if appropriate.  Note that target_configdirs has
2989 # changed from the earlier setting of with_newlib.
2990 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
2991   target_configargs="--with-newlib ${target_configargs}"
2992 fi
2993
2994 # Different target subdirs use different values of certain variables
2995 # (notably CXX).  Worse, multilibs use *lots* of different values.
2996 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
2997 # it doesn't automatically accept command-line overrides of them.
2998 # This means it's not safe for target subdirs to share a cache file,
2999 # which is disgusting, but there you have it.  Hopefully this can be
3000 # fixed in future.  It's still worthwhile to use a cache file for each
3001 # directory.  I think.
3002
3003 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3004 # We need to pass --target, as newer autoconf's requires consistency
3005 # for target_alias and gcc doesn't manage it consistently.
3006 target_configargs="--cache-file=./config.cache ${target_configargs}"
3007
3008 FLAGS_FOR_TARGET=
3009 case " $target_configdirs " in
3010  *" newlib "*)
3011   case " $target_configargs " in
3012   *" --with-newlib "*)
3013    case "$target" in
3014     *-cygwin*)
3015       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3016       ;;
3017    esac
3018
3019    # If we're not building GCC, don't discard standard headers.
3020    if test -d ${srcdir}/gcc; then
3021      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3022
3023      if test "${build}" != "${host}"; then
3024        # On Canadian crosses, CC_FOR_TARGET will have already been set
3025        # by `configure', so we won't have an opportunity to add -Bgcc/
3026        # to it.  This is right: we don't want to search that directory
3027        # for binaries, but we want the header files in there, so add
3028        # them explicitly.
3029        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3030
3031        # Someone might think of using the pre-installed headers on
3032        # Canadian crosses, in case the installed compiler is not fully
3033        # compatible with the compiler being built.  In this case, it
3034        # would be better to flag an error than risking having
3035        # incompatible object files being constructed.  We can't
3036        # guarantee that an error will be flagged, but let's hope the
3037        # compiler will do it, when presented with incompatible header
3038        # files.
3039      fi
3040    fi
3041
3042    case "${target}-${is_cross_compiler}" in
3043    i[[3456789]]86-*-linux*-no)
3044       # Here host == target, so we don't need to build gcc,
3045       # so we don't want to discard standard headers.
3046       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3047       ;;
3048    *)
3049       # If we're building newlib, use its generic headers last, but search
3050       # for any libc-related directories first (so make it the last -B
3051       # switch).
3052       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3053
3054       # If we're building libgloss, find the startup file, simulator library
3055       # and linker script.
3056       case " $target_configdirs " in
3057         *" libgloss "*)
3058         # Look for startup file, simulator library and maybe linker script.
3059         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3060         # Look for libnosys.a in case the target needs it.
3061         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3062         # Most targets have the linker script in the source directory.
3063         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3064         ;;
3065       esac
3066       ;;
3067    esac
3068    ;;
3069   esac
3070   ;;
3071 esac
3072
3073 case "$target" in
3074   x86_64-*mingw* | *-w64-mingw*)
3075   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3076   # however, use a symlink named 'mingw' in ${prefix} .
3077     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3078     ;;
3079   *-mingw*)
3080   # MinGW can't be handled as Cygwin above since it does not use newlib.
3081     FLAGS_FOR_TARGET=$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'
3082     ;;
3083 esac
3084
3085 # Allow the user to override the flags for
3086 # our build compiler if desired.
3087 if test x"${build}" = x"${host}" ; then
3088   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3089   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3090   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3091 fi
3092
3093 # On Canadian crosses, we'll be searching the right directories for
3094 # the previously-installed cross compiler, so don't bother to add
3095 # flags for directories within the install tree of the compiler
3096 # being built; programs in there won't even run.
3097 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3098   # Search for pre-installed headers if nothing else fits.
3099   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3100 fi
3101
3102 if test "x${use_gnu_ld}" = x &&
3103    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3104   # Arrange for us to find uninstalled linker scripts.
3105   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3106 fi
3107
3108 # Search for other target-specific linker scripts and such.
3109 case "${target}" in
3110   mep*)
3111     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3112     ;;
3113 esac
3114
3115 # Makefile fragments.
3116 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3117 do
3118   eval fragval=\$$frag
3119   if test $fragval != /dev/null; then
3120     eval $frag=${srcdir}/$fragval
3121   fi
3122 done
3123 AC_SUBST_FILE(host_makefile_frag)
3124 AC_SUBST_FILE(target_makefile_frag)
3125 AC_SUBST_FILE(alphaieee_frag)
3126 AC_SUBST_FILE(ospace_frag)
3127
3128 # Miscellanea: directories, flags, etc.
3129 AC_SUBST(RPATH_ENVVAR)
3130 AC_SUBST(GCC_SHLIB_SUBDIR)
3131 AC_SUBST(tooldir)
3132 AC_SUBST(build_tooldir)
3133 AC_SUBST(CONFIGURE_GDB_TK)
3134 AC_SUBST(GDB_TK)
3135 AC_SUBST(INSTALL_GDB_TK)
3136
3137 # Build module lists & subconfigure args.
3138 AC_SUBST(build_configargs)
3139 AC_SUBST(build_configdirs)
3140
3141 # Host module lists & subconfigure args.
3142 AC_SUBST(host_configargs)
3143 AC_SUBST(configdirs)
3144 AC_SUBST(target_configdirs)
3145
3146 # Target module lists & subconfigure args.
3147 AC_SUBST(target_configargs)
3148
3149
3150 # Build tools.
3151 AC_SUBST(AR_FOR_BUILD)
3152 AC_SUBST(AS_FOR_BUILD)
3153 AC_SUBST(CC_FOR_BUILD)
3154 AC_SUBST(CFLAGS_FOR_BUILD)
3155 AC_SUBST(CXXFLAGS_FOR_BUILD)
3156 AC_SUBST(CXX_FOR_BUILD)
3157 AC_SUBST(DLLTOOL_FOR_BUILD)
3158 AC_SUBST(GCJ_FOR_BUILD)
3159 AC_SUBST(GFORTRAN_FOR_BUILD)
3160 AC_SUBST(GOC_FOR_BUILD)
3161 AC_SUBST(LDFLAGS_FOR_BUILD)
3162 AC_SUBST(LD_FOR_BUILD)
3163 AC_SUBST(NM_FOR_BUILD)
3164 AC_SUBST(RANLIB_FOR_BUILD)
3165 AC_SUBST(WINDMC_FOR_BUILD)
3166 AC_SUBST(WINDRES_FOR_BUILD)
3167
3168 # Generate default definitions for YACC, M4, LEX and other programs that run
3169 # on the build machine.  These are used if the Makefile can't locate these
3170 # programs in objdir.
3171 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3172
3173 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3174 case " $build_configdirs " in
3175   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3176 esac
3177
3178 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3179 case " $build_configdirs " in
3180   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3181 esac
3182
3183 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3184 case " $build_configdirs " in
3185   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3186 esac
3187
3188 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3189 case " $build_configdirs " in
3190   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3191   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3192 esac
3193
3194 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3195 case " $build_configdirs " in
3196   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3197 esac
3198
3199 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3200 case " $build_configdirs " in
3201   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3202   *)
3203 changequote(,)
3204     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3205     # higher, else we use the "missing" dummy.
3206     if ${MAKEINFO} --version \
3207        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3208       :
3209     else
3210       MAKEINFO="$MISSING makeinfo"
3211     fi
3212     ;;
3213 changequote([,])
3214 esac
3215
3216 # FIXME: expect and dejagnu may become build tools?
3217
3218 AC_CHECK_PROGS(EXPECT, expect, expect)
3219 case " $configdirs " in
3220   *" expect "*)
3221     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3222     ;;
3223 esac
3224
3225 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3226 case " $configdirs " in
3227   *" dejagnu "*)
3228     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3229     ;;
3230 esac
3231
3232
3233 # Host tools.
3234 NCN_STRICT_CHECK_TOOLS(AR, ar)
3235 NCN_STRICT_CHECK_TOOLS(AS, as)
3236 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3237 NCN_STRICT_CHECK_TOOLS(LD, ld)
3238 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3239 NCN_STRICT_CHECK_TOOLS(NM, nm)
3240 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3241 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3242 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3243 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3244 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3245 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3246 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3247 AC_SUBST(CC)
3248 AC_SUBST(CXX)
3249 AC_SUBST(CFLAGS)
3250 AC_SUBST(CXXFLAGS)
3251
3252 # Target tools.
3253 AC_ARG_WITH([build-time-tools],
3254   [AS_HELP_STRING([--with-build-time-tools=PATH],
3255                   [use given path to find target tools during the build])],
3256   [case x"$withval" in
3257      x/*) ;;
3258      *)
3259        with_build_time_tools=
3260        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3261        ;;
3262    esac],
3263   [with_build_time_tools=])
3264
3265 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3266 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3267 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3268 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3269 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3270 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3271
3272 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3273 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3274 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3275 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3276 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3277 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3278 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3279 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3280 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3281 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3282 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3283 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3284
3285 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3286
3287 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3288 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3289 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3290 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3291 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3292                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3293                 c++)
3294 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3295                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3296                 c++)
3297 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3298 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3299 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3300                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3301 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3302                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3303 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3304                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3305 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3306 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3307 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3308 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3309 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3310 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3311 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3312 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3313 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3314
3315 AC_SUBST(FLAGS_FOR_TARGET)
3316 AC_SUBST(RAW_CXX_FOR_TARGET)
3317
3318 # Certain tools may need extra flags.
3319 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3320 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3321 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3322
3323 # When building target libraries, except in a Canadian cross, we use
3324 # the same toolchain as the compiler we just built.
3325 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3326 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3327 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3328 if test $host = $build; then
3329   case " $configdirs " in
3330     *" gcc "*)
3331       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3332       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3333       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3334       ;;
3335   esac
3336 fi
3337
3338 AC_SUBST(COMPILER_AS_FOR_TARGET)
3339 AC_SUBST(COMPILER_LD_FOR_TARGET)
3340 AC_SUBST(COMPILER_NM_FOR_TARGET)
3341
3342 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3343 AC_ARG_ENABLE(maintainer-mode,
3344 [AS_HELP_STRING([--enable-maintainer-mode],
3345                 [enable make rules and dependencies not useful
3346                  (and sometimes confusing) to the casual installer])],
3347       USE_MAINTAINER_MODE=$enableval,
3348       USE_MAINTAINER_MODE=no)
3349 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3350 AC_SUBST(MAINTAINER_MODE_TRUE)
3351 AC_SUBST(MAINTAINER_MODE_FALSE)
3352 if test "$USE_MAINTAINER_MODE" = yes; then
3353   MAINTAINER_MODE_TRUE=
3354   MAINTAINER_MODE_FALSE='#'
3355 else
3356   MAINTAINER_MODE_TRUE='#'
3357   MAINTAINER_MODE_FALSE=
3358 fi
3359 MAINT=$MAINTAINER_MODE_TRUE
3360 AC_SUBST(MAINT)dnl
3361
3362 # ---------------------
3363 # GCC bootstrap support
3364 # ---------------------
3365
3366 # Stage specific cflags for build.
3367 stage1_cflags="-g"
3368 case $build in
3369   vax-*-*)
3370     case ${GCC} in
3371       yes) stage1_cflags="-g -Wa,-J" ;;
3372       *) stage1_cflags="-g -J" ;;
3373     esac ;;
3374 esac
3375
3376 AC_SUBST(stage1_cflags)
3377
3378 # Enable --enable-checking in stage1 of the compiler.
3379 AC_ARG_ENABLE(stage1-checking,
3380 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3381                 [choose additional checking for stage1 of the compiler])],
3382 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3383 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3384   stage1_checking=--enable-checking=yes,types
3385 else
3386   stage1_checking=--enable-checking=$enable_checking,types
3387 fi])
3388 AC_SUBST(stage1_checking)
3389
3390 # Enable -Werror in bootstrap stage2 and later.
3391 AC_ARG_ENABLE(werror,
3392 [AS_HELP_STRING([--enable-werror],
3393                 [enable -Werror in bootstrap stage2 and later])], [],
3394 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3395   enable_werror=yes
3396 else
3397   enable_werror=no
3398 fi])
3399 case ${enable_werror} in
3400   yes) stage2_werror_flag="--enable-werror-always" ;;
3401   *) stage2_werror_flag="" ;;
3402 esac
3403 AC_SUBST(stage2_werror_flag)
3404
3405 # Enable --enable-host-shared.
3406 AC_ARG_ENABLE(host-shared,
3407 [AS_HELP_STRING([--enable-host-shared],
3408                 [build host code as shared libraries])],
3409 [host_shared=$enableval], [host_shared=no])
3410 AC_SUBST(host_shared)
3411
3412 # Specify what files to not compare during bootstrap.
3413
3414 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3415 case "$target" in
3416   hppa*64*-*-hpux*) ;;
3417   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3418   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3419 esac
3420 AC_SUBST(compare_exclusions)
3421
3422 AC_CONFIG_FILES([Makefile],
3423   [sed "$extrasub_build" Makefile |
3424    sed "$extrasub_host" |
3425    sed "$extrasub_target" > mf$$
3426    mv -f mf$$ Makefile],
3427   [extrasub_build="$extrasub_build"
3428    extrasub_host="$extrasub_host"
3429    extrasub_target="$extrasub_target"])
3430 AC_OUTPUT