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. Please keep
 776 # this in sync with contrib/config-list.mk.
 777 case "${target}" in
 778 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
 779     unsupported_languages="$unsupported_languages go"
 780     ;;
 781 esac
 782
 783 # Disable libgo for some systems where it is known to not work.
 784 # For testing, you can easily override this with --enable-libgo.
 785 if test x$enable_libgo = x; then
 786     case "${target}" in
 787     *-*-darwin*)
 788         # PR 46986
 789         noconfigdirs="$noconfigdirs target-libgo"
 790         ;;
 791     *-*-cygwin* | *-*-mingw*)
 792         noconfigdirs="$noconfigdirs target-libgo"
 793         ;;
 794     *-*-aix*)
 795         noconfigdirs="$noconfigdirs target-libgo"
 796         ;;
 797     esac
 798 fi
 799
 800 # Default libgloss CPU subdirectory.
 801 libgloss_dir="$target_cpu"
 802
 803 case "${target}" in
 804   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 805     libgloss_dir=wince
 806     ;;
 807   aarch64*-*-* )
 808     libgloss_dir=aarch64
 809     ;;
 810   arm*-*-*)
 811     libgloss_dir=arm
 812     ;;
 813   cris-*-* | crisv32-*-*)
 814     libgloss_dir=cris
 815     ;;
 816   hppa*-*-*)
 817     libgloss_dir=pa
 818     ;;
 819   i[[3456789]]86-*-*)
 820     libgloss_dir=i386
 821     ;;
 822   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 823     libgloss_dir=m68hc11
 824     ;;
 825   m68*-*-* | fido-*-*)
 826     libgloss_dir=m68k
 827     ;;
 828   mips*-*-*)
 829     libgloss_dir=mips
 830     ;;
 831   powerpc*-*-*)
 832     libgloss_dir=rs6000
 833     ;;
 834   sparc*-*-*)
 835     libgloss_dir=sparc
 836     ;;
 837 esac
 838
 839 # Disable newlib and libgloss for various target OSes.
 840 case "${target}" in
 841   alpha*-dec-osf*)
 842     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 843     ;;
 844   i[[3456789]]86-*-linux*)
 845     # This section makes it possible to build newlib natively on linux.
 846     # If we are using a cross compiler then don't configure newlib.
 847     if test x${is_cross_compiler} != xno ; then
 848       noconfigdirs="$noconfigdirs target-newlib"
 849     fi
 850     noconfigdirs="$noconfigdirs target-libgloss"
 851     # If we are not using a cross compiler, do configure newlib.
 852     # Note however, that newlib will only be configured in this situation
 853     # if the --with-newlib option has been given, because otherwise
 854     # 'target-newlib' will appear in skipdirs.
 855     ;;
 856   i[[3456789]]86-*-rdos*)
 857     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 858     ;;
 859   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 860     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 861     ;;
 862   sparc-*-sunos4*)
 863     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 864     ;;
 865   *-*-aix*)
 866     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 867     ;;
 868   *-*-beos*)
 869     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 870     ;;
 871   *-*-chorusos)
 872     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 873     ;;
 874   *-*-dragonfly*)
 875     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 876     ;;
 877   *-*-freebsd*)
 878     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 879     ;;
 880   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 881     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 882     ;;
 883   *-*-lynxos*)
 884     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 885     ;;
 886   *-*-mingw*)
 887     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 888     ;;
 889   *-*-netbsd*)
 890     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 891     ;;
 892   *-*-netware*)
 893     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 894     ;;
 895   *-*-tpf*)
 896     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 897     ;;
 898   *-*-uclinux*)
 899     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 900     ;;
 901   *-*-vxworks*)
 902     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 903     ;;
 904 esac
 905
 906 case "${target}" in
 907   *-*-chorusos)
 908     ;;
 909   powerpc-*-darwin*)
 910     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 911     noconfigdirs="$noconfigdirs sim target-rda"
 912     ;;
 913   i[[3456789]]86-*-darwin*)
 914     noconfigdirs="$noconfigdirs ld gprof"
 915     noconfigdirs="$noconfigdirs sim target-rda"
 916     ;;
 917   x86_64-*-darwin[[912]]*)
 918     noconfigdirs="$noconfigdirs ld gas gprof"
 919     noconfigdirs="$noconfigdirs sim target-rda"
 920     ;;
 921   *-*-darwin*)
 922     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 923     noconfigdirs="$noconfigdirs sim target-rda"
 924     ;;
 925   *-*-dragonfly*)
 926     ;;
 927   *-*-freebsd*)
 928     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 929         && test -f /usr/local/include/gmp.h; then
 930       with_gmp=/usr/local
 931     fi
 932     ;;
 933   *-*-kaos*)
 934     # Remove unsupported stuff on all kaOS configurations.
 935     noconfigdirs="$noconfigdirs target-libgloss"
 936     ;;
 937   *-*-netbsd*)
 938     ;;
 939   *-*-netware*)
 940     ;;
 941   *-*-rtems*)
 942     noconfigdirs="$noconfigdirs target-libgloss"
 943     ;;
 944     # The tpf target doesn't support gdb yet.
 945   *-*-tpf*)
 946     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 947     ;;
 948   *-*-uclinux*)
 949     noconfigdirs="$noconfigdirs target-rda"
 950     ;;
 951   *-*-vxworks*)
 952     ;;
 953   alpha*-dec-osf*)
 954     # ld works, but does not support shared libraries.
 955     # gas doesn't generate exception information.
 956     noconfigdirs="$noconfigdirs gas ld"
 957     ;;
 958   alpha*-*-*vms*)
 959     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 960     ;;
 961   alpha*-*-*)
 962     # newlib is not 64 bit ready
 963     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 964     ;;
 965   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 966     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 967     ;;
 968   arc-*-*|arceb-*-*)
 969     noconfigdirs="$noconfigdirs target-libgloss"
 970     ;;
 971   arm-*-pe*)
 972     noconfigdirs="$noconfigdirs target-libgloss"
 973     ;;
 974   arm-*-riscix*)
 975     noconfigdirs="$noconfigdirs ld target-libgloss"
 976     ;;
 977   avr-*-rtems*)
 978     ;;
 979   avr-*-*)
 980     if test x${with_avrlibc} != xno; then
 981       noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 982     fi
 983     ;;
 984   c4x-*-* | tic4x-*-*)
 985     noconfigdirs="$noconfigdirs target-libgloss"
 986     ;;
 987   tic54x-*-*)
 988     noconfigdirs="$noconfigdirs target-libgloss gdb"
 989     ;;
 990   d10v-*-*)
 991     noconfigdirs="$noconfigdirs target-libgloss"
 992     ;;
 993   d30v-*-*)
 994     noconfigdirs="$noconfigdirs gdb"
 995     ;;
 996   fr30-*-elf*)
 997     noconfigdirs="$noconfigdirs gdb"
 998     ;;
 999   moxie-*-*)
1000     noconfigdirs="$noconfigdirs gprof"
1001     ;;
1002   h8300*-*-*)
1003     noconfigdirs="$noconfigdirs target-libgloss"
1004     ;;
1005   h8500-*-*)
1006     noconfigdirs="$noconfigdirs target-libgloss"
1007     ;;
1008   hppa1.1-*-osf* | hppa1.1-*-bsd* )
1009     ;;
1010   hppa*64*-*-linux*)
1011     ;;
1012   hppa*-*-linux*)
1013     ;;
1014   hppa*-*-*elf* | \
1015   hppa*-*-lites* | \
1016   hppa*-*-openbsd* | \
1017   hppa*64*-*-*)
1018     ;;
1019   hppa*-hp-hpux11*)
1020     noconfigdirs="$noconfigdirs ld"
1021     ;;
1022   hppa*-*-pro*)
1023     ;;
1024   hppa*-*-*)
1025     noconfigdirs="$noconfigdirs ld"
1026     ;;
1027   i960-*-*)
1028     noconfigdirs="$noconfigdirs gdb"
1029     ;;
1030   ia64*-*-elf*)
1031     # No gdb support yet.
1032     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1033     ;;
1034   ia64*-**-hpux*)
1035     # No ld support yet.
1036     noconfigdirs="$noconfigdirs libgui itcl ld"
1037     ;;
1038   ia64*-*-*vms*)
1039     # No ld support yet.
1040     noconfigdirs="$noconfigdirs libgui itcl ld"
1041     ;;
1042   i[[3456789]]86-w64-mingw*)
1043     ;;
1044   i[[3456789]]86-*-mingw*)
1045     target_configdirs="$target_configdirs target-winsup"
1046     ;;
1047   *-*-cygwin*)
1048     target_configdirs="$target_configdirs target-libtermcap target-winsup"
1049     noconfigdirs="$noconfigdirs target-libgloss"
1050     # always build newlib if winsup directory is present.
1051     if test -d "$srcdir/winsup/cygwin"; then
1052       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1053     elif test -d "$srcdir/newlib"; then
1054       echo "Warning: winsup/cygwin is missing so newlib can't be built."
1055     fi
1056     ;;
1057   i[[3456789]]86-*-pe)
1058     noconfigdirs="$noconfigdirs target-libgloss"
1059     ;;
1060   i[[3456789]]86-*-sco3.2v5*)
1061     # The linker does not yet know about weak symbols in COFF,
1062     # and is not configured to handle mixed ELF and COFF.
1063     noconfigdirs="$noconfigdirs ld target-libgloss"
1064     ;;
1065   i[[3456789]]86-*-sco*)
1066     noconfigdirs="$noconfigdirs gprof target-libgloss"
1067     ;;
1068   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1069     noconfigdirs="$noconfigdirs target-libgloss"
1070     ;;
1071   i[[3456789]]86-*-sysv4*)
1072     noconfigdirs="$noconfigdirs target-libgloss"
1073     ;;
1074   i[[3456789]]86-*-beos*)
1075     noconfigdirs="$noconfigdirs gdb"
1076     ;;
1077   i[[3456789]]86-*-rdos*)
1078     noconfigdirs="$noconfigdirs gdb"
1079     ;;
1080   mmix-*-*)
1081     noconfigdirs="$noconfigdirs gdb"
1082     ;;
1083   mt-*-*)
1084     noconfigdirs="$noconfigdirs sim"
1085     ;;
1086   powerpc-*-aix*)
1087     # copied from rs6000-*-* entry
1088     noconfigdirs="$noconfigdirs gprof"
1089     ;;
1090   powerpc*-*-winnt* | powerpc*-*-pe*)
1091     target_configdirs="$target_configdirs target-winsup"
1092     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1093     # always build newlib.
1094     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1095     ;;
1096     # This is temporary until we can link against shared libraries
1097   powerpcle-*-solaris*)
1098     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1099     ;;
1100   powerpc-*-beos*)
1101     noconfigdirs="$noconfigdirs gdb"
1102     ;;
1103   rs6000-*-lynxos*)
1104     noconfigdirs="$noconfigdirs gprof"
1105     ;;
1106   rs6000-*-aix*)
1107     noconfigdirs="$noconfigdirs gprof"
1108     ;;
1109   rs6000-*-*)
1110     noconfigdirs="$noconfigdirs gprof"
1111     ;;
1112   m68k-apollo-*)
1113     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1114     ;;
1115   microblaze*)
1116     noconfigdirs="$noconfigdirs gprof"
1117     ;;
1118   mips*-sde-elf* | mips*-mti-elf*)
1119     if test x$with_newlib = xyes; then
1120       noconfigdirs="$noconfigdirs gprof"
1121     fi
1122     ;;
1123   mips*-*-irix5*)
1124     noconfigdirs="$noconfigdirs gprof target-libgloss"
1125     ;;
1126   mips*-*-irix6*)
1127     noconfigdirs="$noconfigdirs gprof target-libgloss"
1128     ;;
1129   mips*-*-bsd*)
1130     noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1131     ;;
1132   mips*-*-linux*)
1133     ;;
1134   mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1135   | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1136     noconfigdirs="$noconfigdirs ld gas gprof"
1137     ;;
1138   mips*-*-*)
1139     noconfigdirs="$noconfigdirs gprof"
1140     ;;
1141   sh-*-* | sh64-*-*)
1142     case "${target}" in
1143       sh*-*-elf)
1144          ;;
1145       *)
1146          noconfigdirs="$noconfigdirs target-libgloss" ;;
1147     esac
1148     ;;
1149   sparc-*-sunos4*)
1150     if test x${is_cross_compiler} = xno ; then
1151            use_gnu_ld=no
1152     fi
1153     ;;
1154   tic6x-*-*)
1155     noconfigdirs="$noconfigdirs sim"
1156     ;;
1157   tilepro*-*-* | tilegx*-*-*)
1158     noconfigdirs="$noconfigdirs sim"
1159     ;;
1160   v810-*-*)
1161     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1162     ;;
1163   vax-*-*)
1164     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1165     ;;
1166 esac
1167
1168 # If we aren't building newlib, then don't build libgloss, since libgloss
1169 # depends upon some newlib header files.
1170 case "${noconfigdirs}" in
1171   *target-libgloss*) ;;
1172   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1173 esac
1174
1175 # Work in distributions that contain no compiler tools, like Autoconf.
1176 host_makefile_frag=/dev/null
1177 if test -d ${srcdir}/config ; then
1178 case "${host}" in
1179   i[[3456789]]86-*-msdosdjgpp*)
1180     host_makefile_frag="config/mh-djgpp"
1181     ;;
1182   *-cygwin*)
1183     ACX_CHECK_CYGWIN_CAT_WORKS
1184     host_makefile_frag="config/mh-cygwin"
1185     ;;
1186   *-mingw*)
1187     host_makefile_frag="config/mh-mingw"
1188     ;;
1189   alpha*-*-linux*)
1190     host_makefile_frag="config/mh-alpha-linux"
1191     ;;
1192   hppa*-hp-hpux10*)
1193     host_makefile_frag="config/mh-pa-hpux10"
1194     ;;
1195   hppa*-hp-hpux*)
1196     host_makefile_frag="config/mh-pa"
1197     ;;
1198   hppa*-*)
1199     host_makefile_frag="config/mh-pa"
1200     ;;
1201   *-*-darwin*)
1202     host_makefile_frag="config/mh-darwin"
1203     ;;
1204   powerpc-*-aix*)
1205     host_makefile_frag="config/mh-ppc-aix"
1206     ;;
1207   rs6000-*-aix*)
1208     host_makefile_frag="config/mh-ppc-aix"
1209     ;;
1210 esac
1211 fi
1212
1213 if test "${build}" != "${host}" ; then
1214   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1215   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1216   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1217   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1218   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1219   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1220   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1221   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1222   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1223   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1224   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1225   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1226   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1227 else
1228   AR_FOR_BUILD="\$(AR)"
1229   AS_FOR_BUILD="\$(AS)"
1230   CC_FOR_BUILD="\$(CC)"
1231   CXX_FOR_BUILD="\$(CXX)"
1232   GCJ_FOR_BUILD="\$(GCJ)"
1233   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1234   GOC_FOR_BUILD="\$(GOC)"
1235   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1236   LD_FOR_BUILD="\$(LD)"
1237   NM_FOR_BUILD="\$(NM)"
1238   RANLIB_FOR_BUILD="\$(RANLIB)"
1239   WINDRES_FOR_BUILD="\$(WINDRES)"
1240   WINDMC_FOR_BUILD="\$(WINDMC)"
1241 fi
1242
1243 AC_PROG_CC
1244 AC_PROG_CXX
1245
1246 # We must set the default linker to the linker used by gcc for the correct
1247 # operation of libtool.  If LD is not defined and we are using gcc, try to
1248 # set the LD default to the ld used by gcc.
1249 if test -z "$LD"; then
1250   if test "$GCC" = yes; then
1251     case $build in
1252     *-*-mingw*)
1253       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1254     *)
1255       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1256     esac
1257     case $gcc_prog_ld in
1258     # Accept absolute paths.
1259     [[\\/]* | [A-Za-z]:[\\/]*)]
1260       LD="$gcc_prog_ld" ;;
1261     esac
1262   fi
1263 fi
1264
1265 # Check whether -static-libstdc++ -static-libgcc is supported.
1266 have_static_libs=no
1267 if test "$GCC" = yes; then
1268   saved_LDFLAGS="$LDFLAGS"
1269
1270   LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1271   AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1272   AC_LANG_PUSH(C++)
1273   AC_LINK_IFELSE([
1274 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1275 #error -static-libstdc++ not implemented
1276 #endif
1277 int main() {}],
1278     [AC_MSG_RESULT([yes]); have_static_libs=yes],
1279     [AC_MSG_RESULT([no])])
1280   AC_LANG_POP(C++)
1281
1282   LDFLAGS="$saved_LDFLAGS"
1283 fi
1284
1285 ACX_PROG_GNAT
1286 ACX_PROG_CMP_IGNORE_INITIAL
1287
1288 AC_ARG_ENABLE([bootstrap],
1289 [AS_HELP_STRING([--enable-bootstrap],
1290                 [enable bootstrapping @<:@yes if native build@:>@])],,
1291 enable_bootstrap=default)
1292
1293 # Issue errors and warnings for invalid/strange bootstrap combinations.
1294 if test -r $srcdir/gcc/configure; then
1295   have_compiler=yes
1296 else
1297   have_compiler=no
1298 fi
1299
1300 case "$have_compiler:$host:$target:$enable_bootstrap" in
1301   *:*:*:no) ;;
1302
1303   # Default behavior.  Enable bootstrap if we have a compiler
1304   # and we are in a native configuration.
1305   yes:$build:$build:default)
1306     enable_bootstrap=yes ;;
1307
1308   *:*:*:default)
1309     enable_bootstrap=no ;;
1310
1311   # We have a compiler and we are in a native configuration, bootstrap is ok
1312   yes:$build:$build:yes)
1313     ;;
1314
1315   # Other configurations, but we have a compiler.  Assume the user knows
1316   # what he's doing.
1317   yes:*:*:yes)
1318     AC_MSG_WARN([trying to bootstrap a cross compiler])
1319     ;;
1320
1321   # No compiler: if they passed --enable-bootstrap explicitly, fail
1322   no:*:*:yes)
1323     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1324
1325   # Fail if wrong command line
1326   *)
1327     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1328     ;;
1329 esac
1330
1331 # Used for setting $lt_cv_objdir
1332 _LT_CHECK_OBJDIR
1333
1334 # Check for GMP, MPFR and MPC
1335 gmplibs="-lmpc -lmpfr -lgmp"
1336 gmpinc=
1337 have_gmp=no
1338
1339 # Specify a location for mpc
1340 # check for this first so it ends up on the link line before mpfr.
1341 AC_ARG_WITH(mpc,
1342 [AS_HELP_STRING([--with-mpc=PATH],
1343                 [specify prefix directory for installed MPC package.
1344                  Equivalent to --with-mpc-include=PATH/include
1345                  plus --with-mpc-lib=PATH/lib])])
1346 AC_ARG_WITH(mpc-include,
1347 [AS_HELP_STRING([--with-mpc-include=PATH],
1348                 [specify directory for installed MPC include files])])
1349 AC_ARG_WITH(mpc-lib,
1350 [AS_HELP_STRING([--with-mpc-lib=PATH],
1351                 [specify directory for the installed MPC library])])
1352
1353 if test "x$with_mpc" != x; then
1354   gmplibs="-L$with_mpc/lib $gmplibs"
1355   gmpinc="-I$with_mpc/include $gmpinc"
1356 fi
1357 if test "x$with_mpc_include" != x; then
1358   gmpinc="-I$with_mpc_include $gmpinc"
1359 fi
1360 if test "x$with_mpc_lib" != x; then
1361   gmplibs="-L$with_mpc_lib $gmplibs"
1362 fi
1363 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1364   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1365   gmpinc='-I$$s/mpc/src '"$gmpinc"
1366   # Do not test the mpc version.  Assume that it is sufficient, since
1367   # it is in the source tree, and the library has not been built yet
1368   # but it would be included on the link line in the version check below
1369   # hence making the test fail.
1370   have_gmp=yes
1371 fi
1372
1373 # Specify a location for mpfr
1374 # check for this first so it ends up on the link line before gmp.
1375 AC_ARG_WITH(mpfr-dir,
1376 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1377 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1378 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1379
1380 AC_ARG_WITH(mpfr,
1381 [AS_HELP_STRING([--with-mpfr=PATH],
1382                 [specify prefix directory for installed MPFR package.
1383                  Equivalent to --with-mpfr-include=PATH/include
1384                  plus --with-mpfr-lib=PATH/lib])])
1385 AC_ARG_WITH(mpfr-include,
1386 [AS_HELP_STRING([--with-mpfr-include=PATH],
1387                 [specify directory for installed MPFR include files])])
1388 AC_ARG_WITH(mpfr-lib,
1389 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1390                 [specify directory for the installed MPFR library])])
1391
1392 if test "x$with_mpfr" != x; then
1393   gmplibs="-L$with_mpfr/lib $gmplibs"
1394   gmpinc="-I$with_mpfr/include $gmpinc"
1395 fi
1396 if test "x$with_mpfr_include" != x; then
1397   gmpinc="-I$with_mpfr_include $gmpinc"
1398 fi
1399 if test "x$with_mpfr_lib" != x; then
1400   gmplibs="-L$with_mpfr_lib $gmplibs"
1401 fi
1402 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1403   # MPFR v3.1.0 moved the sources into a src sub-directory.
1404   if test -d ${srcdir}/mpfr/src; then
1405     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1406     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1407     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1408   else
1409     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1410     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1411     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1412   fi
1413   # Do not test the mpfr version.  Assume that it is sufficient, since
1414   # it is in the source tree, and the library has not been built yet
1415   # but it would be included on the link line in the version check below
1416   # hence making the test fail.
1417   have_gmp=yes
1418 fi
1419
1420 # Specify a location for gmp
1421 AC_ARG_WITH(gmp-dir,
1422 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1423 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1424 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1425
1426 AC_ARG_WITH(gmp,
1427 [AS_HELP_STRING([--with-gmp=PATH],
1428                 [specify prefix directory for the installed GMP package.
1429                  Equivalent to --with-gmp-include=PATH/include
1430                  plus --with-gmp-lib=PATH/lib])])
1431 AC_ARG_WITH(gmp-include,
1432 [AS_HELP_STRING([--with-gmp-include=PATH],
1433                 [specify directory for installed GMP include files])])
1434 AC_ARG_WITH(gmp-lib,
1435 [AS_HELP_STRING([--with-gmp-lib=PATH],
1436                 [specify directory for the installed GMP library])])
1437
1438
1439 if test "x$with_gmp" != x; then
1440   gmplibs="-L$with_gmp/lib $gmplibs"
1441   gmpinc="-I$with_gmp/include $gmpinc"
1442 fi
1443 if test "x$with_gmp_include" != x; then
1444   gmpinc="-I$with_gmp_include $gmpinc"
1445 fi
1446 if test "x$with_gmp_lib" != x; then
1447   gmplibs="-L$with_gmp_lib $gmplibs"
1448 fi
1449 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1450   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1451   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1452   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1453   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1454   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1455   # Do not test the gmp version.  Assume that it is sufficient, since
1456   # it is in the source tree, and the library has not been built yet
1457   # but it would be included on the link line in the version check below
1458   # hence making the test fail.
1459   have_gmp=yes
1460 fi
1461
1462 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1463   have_gmp=yes
1464   saved_CFLAGS="$CFLAGS"
1465   CFLAGS="$CFLAGS $gmpinc"
1466   # Check for the recommended and required versions of GMP.
1467   AC_MSG_CHECKING([for the correct version of gmp.h])
1468   AC_TRY_COMPILE([#include "gmp.h"],[
1469   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1470   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1471   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1472   choke me
1473   #endif
1474   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1475   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1476   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1477   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1478   choke me
1479   #endif
1480   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1481    [AC_MSG_RESULT([no]); have_gmp=no])
1482
1483   # If we have GMP, check the MPFR version.
1484   if test x"$have_gmp" = xyes; then
1485     # Check for the recommended and required versions of MPFR.
1486     AC_MSG_CHECKING([for the correct version of mpfr.h])
1487     AC_TRY_COMPILE([#include <gmp.h>
1488     #include <mpfr.h>],[
1489     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1490     choke me
1491     #endif
1492     ], [AC_TRY_COMPILE([#include <gmp.h>
1493     #include <mpfr.h>],[
1494     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1495     choke me
1496     #endif
1497     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1498      [AC_MSG_RESULT([no]); have_gmp=no])
1499   fi
1500
1501   # Check for the MPC header version.
1502   if test x"$have_gmp" = xyes ; then
1503     # Check for the recommended and required versions of MPC.
1504     AC_MSG_CHECKING([for the correct version of mpc.h])
1505     AC_TRY_COMPILE([#include <mpc.h>],[
1506     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1507     choke me
1508     #endif
1509     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1510     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1511     choke me
1512     #endif
1513     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1514      [AC_MSG_RESULT([no]); have_gmp=no])
1515   fi
1516
1517   # Now check the MPFR library.
1518   if test x"$have_gmp" = xyes; then
1519     saved_LIBS="$LIBS"
1520     LIBS="$LIBS $gmplibs"
1521     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1522     AC_TRY_LINK([#include <mpc.h>],[
1523     mpfr_t n;
1524     mpfr_t x;
1525     mpc_t c;
1526     int t;
1527     mpfr_init (n);
1528     mpfr_init (x);
1529     mpfr_atan2 (n, n, x, GMP_RNDN);
1530     mpfr_erfc (n, x, GMP_RNDN);
1531     mpfr_subnormalize (x, t, GMP_RNDN);
1532     mpfr_clear(n);
1533     mpfr_clear(x);
1534     mpc_init2 (c, 53);
1535     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1536     mpc_cosh (c, c, MPC_RNDNN);
1537     mpc_pow (c, c, c, MPC_RNDNN);
1538     mpc_acosh (c, c, MPC_RNDNN);
1539     mpc_clear (c);
1540     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1541     LIBS="$saved_LIBS"
1542   fi
1543
1544   CFLAGS="$saved_CFLAGS"
1545
1546 # The library versions listed in the error message below should match
1547 # the HARD-minimums enforced above.
1548   if test x$have_gmp != xyes; then
1549     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1550 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1551 their locations.  Source code for these libraries can be found at
1552 their respective hosting sites as well as at
1553 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1554 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1555 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1556 make sure that you have installed both the libraries and the header
1557 files.  They may be located in separate packages.])
1558   fi
1559 fi
1560
1561 # Flags needed for both GMP, MPFR and/or MPC.
1562 AC_SUBST(gmplibs)
1563 AC_SUBST(gmpinc)
1564 AC_SUBST(extra_mpfr_configure_flags)
1565 AC_SUBST(extra_mpc_gmp_configure_flags)
1566 AC_SUBST(extra_mpc_mpfr_configure_flags)
1567 AC_SUBST(extra_isl_gmp_configure_flags)
1568
1569 # Allow host libstdc++ to be specified for static linking with PPL.
1570 AC_ARG_WITH(host-libstdcxx,
1571 [AS_HELP_STRING([--with-host-libstdcxx=L],
1572                 [use linker arguments L to link with libstdc++
1573                  when linking with PPL])])
1574
1575 case $with_host_libstdcxx in
1576   no|yes)
1577     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1578     ;;
1579 esac
1580
1581 # Libraries to use for stage1 or when not bootstrapping.
1582 AC_ARG_WITH(stage1-libs,
1583 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1584 [if test "$withval" = "no" -o "$withval" = "yes"; then
1585    stage1_libs=
1586  else
1587    stage1_libs=$withval
1588  fi],
1589 [stage1_libs=$with_host_libstdcxx])
1590 AC_SUBST(stage1_libs)
1591
1592 # Linker flags to use for stage1 or when not bootstrapping.
1593 AC_ARG_WITH(stage1-ldflags,
1594 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1595 [if test "$withval" = "no" -o "$withval" = "yes"; then
1596    stage1_ldflags=
1597  else
1598    stage1_ldflags=$withval
1599  fi],
1600 [stage1_ldflags=
1601  # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1602  # if supported.  But if the user explicitly specified the libraries to use,
1603  # trust that they are doing what they want.
1604  if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1605    stage1_ldflags="-static-libstdc++ -static-libgcc"
1606  fi])
1607 AC_SUBST(stage1_ldflags)
1608
1609 # Libraries to use for stage2 and later builds.  This defaults to the
1610 # argument passed to --with-host-libstdcxx.
1611 AC_ARG_WITH(boot-libs,
1612 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1613 [if test "$withval" = "no" -o "$withval" = "yes"; then
1614    poststage1_libs=
1615  else
1616    poststage1_libs=$withval
1617  fi],
1618 [poststage1_libs=$with_host_libstdcxx])
1619 AC_SUBST(poststage1_libs)
1620
1621 # Linker flags to use for stage2 and later builds.
1622 AC_ARG_WITH(boot-ldflags,
1623 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1624                 [linker flags for stage2 and later])],
1625 [if test "$withval" = "no" -o "$withval" = "yes"; then
1626    poststage1_ldflags=
1627  else
1628    poststage1_ldflags=$withval
1629  fi],
1630 [poststage1_ldflags=
1631  # In stages 2 and 3, default to linking libstdc++ and libgcc
1632  # statically.  But if the user explicitly specified the libraries to
1633  # use, trust that they are doing what they want.
1634  if test "$poststage1_libs" = ""; then
1635    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1636  fi])
1637 AC_SUBST(poststage1_ldflags)
1638
1639 # GCC GRAPHITE dependences, ISL and CLOOG which in turn requires ISL.
1640 # Basic setup is inlined here, actual checks are in config/cloog.m4 and
1641 # config/isl.m4
1642
1643 AC_ARG_WITH(cloog,
1644   [AS_HELP_STRING(
1645     [--with-cloog=PATH],
1646     [Specify prefix directory for the installed CLooG-ISL package.
1647      Equivalent to --with-cloog-include=PATH/include
1648      plus --with-cloog-lib=PATH/lib])])
1649 AC_ARG_WITH(isl,
1650   [AS_HELP_STRING(
1651    [--with-isl=PATH],
1652    [Specify prefix directory for the installed ISL package.
1653     Equivalent to --with-isl-include=PATH/include
1654     plus --with-isl-lib=PATH/lib])])
1655
1656 # Treat --without-isl as a request to disable
1657 # GRAPHITE support and skip all following checks.
1658 if test "x$with_isl" != "xno"; then
1659   # Check for ISL
1660   dnl Provide configure switches and initialize islinc & isllibs
1661   dnl with user input.
1662   ISL_INIT_FLAGS
1663   dnl The versions of ISL that work for Graphite
1664   ISL_CHECK_VERSION()
1665   dnl Only execute fail-action, if ISL has been requested.
1666   ISL_IF_FAILED([
1667     AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
1668
1669   if test "x$gcc_cv_isl" != "xno"; then
1670     # Check for CLOOG
1671     dnl Provide configure switches and initialize clooginc & clooglibs
1672     dnl with user input.
1673     CLOOG_INIT_FLAGS
1674     dnl The versions of CLooG that work for Graphite.
1675     CLOOG_CHECK_VERSION(0,18,1)
1676
1677     dnl Only execute fail-action, if CLooG has been requested.
1678     CLOOG_IF_FAILED([
1679       AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
1680   fi
1681 fi
1682
1683 # If the ISL check failed, disable builds of in-tree
1684 # variants of both ISL and CLooG
1685 if test "x$with_isl" = xno ||
1686    test "x$gcc_cv_isl" = xno; then
1687   noconfigdirs="$noconfigdirs cloog isl"
1688   islinc=
1689   clooginc=
1690   clooglibs=
1691 fi
1692
1693 # If the CLooG check failed, disable builds of in-tree
1694 # variants of CLooG
1695 if test "x$with_cloog" = xno ||
1696    test "x$gcc_cv_cloog" = xno; then
1697   noconfigdirs="$noconfigdirs cloog isl"
1698   clooginc=
1699   clooglibs=
1700 fi
1701
1702 AC_SUBST(isllibs)
1703 AC_SUBST(islinc)
1704 AC_SUBST(clooglibs)
1705 AC_SUBST(clooginc)
1706
1707 # Check for LTO support.
1708 AC_ARG_ENABLE(lto,
1709 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1710 enable_lto=$enableval,
1711 enable_lto=yes; default_enable_lto=yes)
1712
1713 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1714   build_lto_plugin=yes
1715 ],[if test x"$default_enable_lto" = x"yes" ; then
1716     case $target in
1717       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1718       # On other non-ELF platforms, LTO has yet to be validated.
1719       *) enable_lto=no ;;
1720     esac
1721   else
1722   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1723   # It would also be nice to check the binutils support, but we don't
1724   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1725   # warn during gcc/ subconfigure; unless you're bootstrapping with
1726   # -flto it won't be needed until after installation anyway.
1727     case $target in
1728       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1729       *) if test x"$enable_lto" = x"yes"; then
1730         AC_MSG_ERROR([LTO support is not enabled for this target.])
1731         fi
1732       ;;
1733     esac
1734   fi
1735   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1736   # Build it unless LTO was explicitly disabled.
1737   case $target in
1738     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1739     *) ;;
1740   esac
1741 ])
1742
1743 AC_ARG_ENABLE(linker-plugin-configure-flags,
1744   [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1745     [additional flags for configuring linker plugins @<:@none@:>@])],
1746   extra_linker_plugin_configure_flags=$enableval,
1747   extra_linker_plugin_configure_flags=)
1748 AC_SUBST(extra_linker_plugin_configure_flags)
1749 AC_ARG_ENABLE(linker-plugin-flags,
1750   [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1751     [additional flags for configuring and building linker plugins @<:@none@:>@])],
1752   extra_linker_plugin_flags=$enableval,
1753   extra_linker_plugin_flags=)
1754 AC_SUBST(extra_linker_plugin_flags)
1755
1756
1757 # By default, C and C++ are the only stage 1 languages.
1758 stage1_languages=,c,
1759
1760 # Target libraries that we bootstrap.
1761 bootstrap_target_libs=,target-libgcc,
1762
1763 # Figure out what language subdirectories are present.
1764 # Look if the user specified --enable-languages="..."; if not, use
1765 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1766 # go away some day.
1767 # NB:  embedded tabs in this IF block -- do not untabify
1768 if test -d ${srcdir}/gcc; then
1769   if test x"${enable_languages+set}" != xset; then
1770     if test x"${LANGUAGES+set}" = xset; then
1771       enable_languages="${LANGUAGES}"
1772         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1773     else
1774       enable_languages=all
1775     fi
1776   else
1777     if test x"${enable_languages}" = x ||
1778        test x"${enable_languages}" = xyes;
1779        then
1780       echo configure.in: --enable-languages needs at least one language argument 1>&2
1781       exit 1
1782     fi
1783   fi
1784   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1785
1786   # 'f95' is the old name for the 'fortran' language. We issue a warning
1787   # and make the substitution.
1788   case ,${enable_languages}, in
1789     *,f95,*)
1790       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1791       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1792       ;;
1793   esac
1794
1795   # If bootstrapping, C++ must be enabled.
1796   case ",$enable_languages,:$enable_bootstrap" in
1797     *,c++,*:*) ;;
1798     *:yes)
1799       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1800         enable_languages="${enable_languages},c++"
1801       else
1802         AC_MSG_ERROR([bootstrapping requires c++ sources])
1803       fi
1804       ;;
1805   esac
1806
1807   # First scan to see if an enabled language requires some other language.
1808   # We assume that a given config-lang.in will list all the language
1809   # front ends it requires, even if some are required indirectly.
1810   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1811     case ${lang_frag} in
1812       ..) ;;
1813       # The odd quoting in the next line works around
1814       # an apparent bug in bash 1.12 on linux.
1815       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1816       *)
1817         # From the config-lang.in, get $language, $lang_requires, and
1818         # $lang_requires_boot_languages.
1819         language=
1820         lang_requires=
1821         lang_requires_boot_languages=
1822         . ${lang_frag}
1823         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1824           case ,${enable_languages}, in
1825             *,$other,*) ;;
1826             *,all,*) ;;
1827             *,$language,*)
1828               echo " \`$other' language required by \`$language'; enabling" 1>&2
1829               enable_languages="${enable_languages},${other}"
1830               ;;
1831           esac
1832         done
1833         for other in ${lang_requires_boot_languages} ; do
1834           if test "$other" != "c"; then
1835             case ,${enable_stage1_languages}, in
1836               *,$other,*) ;;
1837               *,all,*) ;;
1838               *)
1839                 case ,${enable_languages}, in
1840                   *,$language,*)
1841                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1842                     enable_stage1_languages="$enable_stage1_languages,${other}"
1843                     ;;
1844                 esac
1845                 ;;
1846             esac
1847           fi
1848         done
1849         ;;
1850     esac
1851   done
1852
1853   new_enable_languages=,c,
1854
1855   # If LTO is enabled, add the LTO front end.
1856   if test "$enable_lto" = "yes" ; then
1857     case ,${enable_languages}, in
1858       *,lto,*) ;;
1859       *) enable_languages="${enable_languages},lto" ;;
1860     esac
1861     if test "${build_lto_plugin}" = "yes" ; then
1862       configdirs="$configdirs lto-plugin"
1863     fi
1864   fi
1865
1866   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1867   potential_languages=,c,
1868
1869   enabled_target_libs=
1870   disabled_target_libs=
1871
1872   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1873     case ${lang_frag} in
1874       ..) ;;
1875       # The odd quoting in the next line works around
1876       # an apparent bug in bash 1.12 on linux.
1877       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1878       *)
1879         # From the config-lang.in, get $language, $target_libs,
1880         # $lang_dirs, $boot_language, and $build_by_default
1881         language=
1882         target_libs=
1883         lang_dirs=
1884         subdir_requires=
1885         boot_language=no
1886         build_by_default=yes
1887         . ${lang_frag}
1888         if test x${language} = x; then
1889           echo "${lang_frag} doesn't set \$language." 1>&2
1890           exit 1
1891         fi
1892
1893         if test "$language" = "c++"; then
1894           boot_language=yes
1895         fi
1896
1897         add_this_lang=no
1898         case ,${enable_languages}, in
1899           *,${language},*)
1900             # Language was explicitly selected; include it
1901             # unless it is C, which is enabled by default.
1902             if test "$language" != "c"; then
1903               add_this_lang=yes
1904             fi
1905             ;;
1906           *,all,*)
1907             # 'all' was selected, select it if it is a default language
1908             if test "$language" != "c"; then
1909               add_this_lang=${build_by_default}
1910             fi
1911             ;;
1912         esac
1913
1914         # Disable languages that need other directories if these aren't available.
1915         for i in $subdir_requires; do
1916           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1917           case ,${enable_languages}, in
1918             *,${language},*)
1919               # Specifically requested language; tell them.
1920               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1921               ;;
1922             *)
1923               # Silently disable.
1924               add_this_lang=unsupported
1925               ;;
1926           esac
1927         done
1928
1929         # Disable Ada if no preexisting GNAT is available.
1930         case ,${enable_languages},:${language}:${have_gnat} in
1931           *,${language},*:ada:no)
1932             # Specifically requested language; tell them.
1933             AC_MSG_ERROR([GNAT is required to build $language])
1934             ;;
1935           *:ada:no)
1936             # Silently disable.
1937             add_this_lang=unsupported
1938             ;;
1939         esac
1940
1941         # Disable a language that is unsupported by the target.
1942         case " $unsupported_languages " in
1943           *" $language "*)
1944             add_this_lang=unsupported
1945             ;;
1946         esac
1947
1948         case $add_this_lang in
1949           unsupported)
1950             # Remove language-dependent dirs.
1951             disabled_target_libs="$disabled_target_libs $target_libs"
1952             noconfigdirs="$noconfigdirs $lang_dirs"
1953             ;;
1954           no)
1955             # Remove language-dependent dirs; still show language as supported.
1956             disabled_target_libs="$disabled_target_libs $target_libs"
1957             noconfigdirs="$noconfigdirs $lang_dirs"
1958             potential_languages="${potential_languages}${language},"
1959             ;;
1960           yes)
1961             new_enable_languages="${new_enable_languages}${language},"
1962             potential_languages="${potential_languages}${language},"
1963             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1964             enabled_target_libs="$enabled_target_libs $target_libs"
1965             case "${boot_language}:,$enable_stage1_languages," in
1966               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1967                 # Add to (comma-separated) list of stage 1 languages.
1968                 case ",$stage1_languages," in
1969                   *,$language,* | ,yes, | ,all,) ;;
1970                   *) stage1_languages="${stage1_languages}${language}," ;;
1971                 esac
1972                 # We need to bootstrap any supporting libraries.
1973                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1974                 ;;
1975             esac
1976             ;;
1977         esac
1978         ;;
1979     esac
1980   done
1981
1982   # Add target libraries which are only needed for disabled languages
1983   # to noconfigdirs.
1984   if test -n "$disabled_target_libs"; then
1985     for dir in $disabled_target_libs; do
1986       case " $enabled_target_libs " in
1987       *" ${dir} "*) ;;
1988       *) noconfigdirs="$noconfigdirs $dir" ;;
1989       esac
1990     done
1991   fi
1992
1993   AC_ARG_ENABLE(stage1-languages,
1994   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1995                   [choose additional languages to build during
1996                   stage1.  Mostly useful for compiler development])],
1997   [case ,${enable_stage1_languages}, in
1998     ,no,|,,)
1999       # Set it to something that will have no effect in the loop below
2000       enable_stage1_languages=c ;;
2001     ,yes,)
2002       enable_stage1_languages=`echo $new_enable_languages | \
2003         sed -e "s/^,//" -e "s/,$//" ` ;;
2004     *,all,*)
2005       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2006         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2007   esac
2008
2009   # Add "good" languages from enable_stage1_languages to stage1_languages,
2010   # while "bad" languages go in missing_languages.  Leave no duplicates.
2011   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2012     case $potential_languages in
2013       *,$i,*)
2014         case $stage1_languages in
2015           *,$i,*) ;;
2016           *) stage1_languages="$stage1_languages$i," ;;
2017         esac ;;
2018       *)
2019         case $missing_languages in
2020           *,$i,*) ;;
2021           *) missing_languages="$missing_languages$i," ;;
2022         esac ;;
2023      esac
2024   done])
2025
2026   # Remove leading/trailing commas that were added for simplicity
2027   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2028   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2029   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2030   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2031
2032   if test "x$missing_languages" != x; then
2033     AC_MSG_ERROR([
2034 The following requested languages could not be built: ${missing_languages}
2035 Supported languages are: ${potential_languages}])
2036   fi
2037   if test "x$new_enable_languages" != "x$enable_languages"; then
2038     echo The following languages will be built: ${new_enable_languages}
2039     enable_languages="$new_enable_languages"
2040   fi
2041
2042   AC_SUBST(stage1_languages)
2043   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2044 fi
2045
2046 # Handle --disable-<component> generically.
2047 for dir in $configdirs $build_configdirs $target_configdirs ; do
2048   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2049   varname=`echo $dirname | sed -e s/+/_/g`
2050   if eval test x\${enable_${varname}} "=" xno ; then
2051     noconfigdirs="$noconfigdirs $dir"
2052   fi
2053 done
2054
2055 # Check for Boehm's garbage collector
2056 AC_ARG_ENABLE(objc-gc,
2057 [AS_HELP_STRING([--enable-objc-gc],
2058                 [enable use of Boehm's garbage collector with the
2059                  GNU Objective-C runtime])],
2060 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2061   *,objc,*:*:yes:*target-boehm-gc*)
2062     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2063     ;;
2064 esac])
2065
2066 # Make sure we only build Boehm's garbage collector if required.
2067 case ,${enable_languages},:${enable_objc_gc} in
2068   *,objc,*:yes)
2069     # Keep target-boehm-gc if requested for Objective-C.
2070     ;;
2071   *)
2072     # Otherwise remove target-boehm-gc depending on target-libjava.
2073     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2074       noconfigdirs="$noconfigdirs target-boehm-gc"
2075     fi
2076     ;;
2077 esac
2078
2079 # Disable libcilkrts, libitm, libsanitizer, libvtv if we're not building C++
2080 case ,${enable_languages}, in
2081   *,c++,*)
2082     # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2083     case "${noconfigdirs}" in
2084       *target-libstdc++-v3*)
2085         noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2086         ;;
2087       *) ;;
2088     esac
2089     ;;
2090   *)
2091     noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer target-libvtv"
2092     ;;
2093 esac
2094
2095 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2096 # $build_configdirs and $target_configdirs.
2097 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2098
2099 notsupp=""
2100 for dir in . $skipdirs $noconfigdirs ; do
2101   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2102   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2103     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2104     if test -r $srcdir/$dirname/configure ; then
2105       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2106         true
2107       else
2108         notsupp="$notsupp $dir"
2109       fi
2110     fi
2111   fi
2112   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2113     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2114     if test -r $srcdir/$dirname/configure ; then
2115       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2116         true
2117       else
2118         notsupp="$notsupp $dir"
2119       fi
2120     fi
2121   fi
2122   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2123     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2124     if test -r $srcdir/$dirname/configure ; then
2125       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2126         true
2127       else
2128         notsupp="$notsupp $dir"
2129       fi
2130     fi
2131   fi
2132 done
2133
2134 # Quietly strip out all directories which aren't configurable in this tree.
2135 # This relies on all configurable subdirectories being autoconfiscated, which
2136 # is now the case.
2137 build_configdirs_all="$build_configdirs"
2138 build_configdirs=
2139 for i in ${build_configdirs_all} ; do
2140   j=`echo $i | sed -e s/build-//g`
2141   if test -f ${srcdir}/$j/configure ; then
2142     build_configdirs="${build_configdirs} $i"
2143   fi
2144 done
2145
2146 configdirs_all="$configdirs"
2147 configdirs=
2148 for i in ${configdirs_all} ; do
2149   if test -f ${srcdir}/$i/configure ; then
2150     configdirs="${configdirs} $i"
2151   fi
2152 done
2153
2154 target_configdirs_all="$target_configdirs"
2155 target_configdirs=
2156 for i in ${target_configdirs_all} ; do
2157   j=`echo $i | sed -e s/target-//g`
2158   if test -f ${srcdir}/$j/configure ; then
2159     target_configdirs="${target_configdirs} $i"
2160   fi
2161 done
2162
2163 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2164 # so we have to add it after the preceding checks.
2165 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2166 then
2167   case " $configdirs " in
2168     *" libiberty "*)
2169       # If we can build libiberty, we can also build libiberty-linker-plugin.
2170       configdirs="$configdirs libiberty-linker-plugin"
2171       extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2172         --with-libiberty=../libiberty-linker-plugin";;
2173     *)
2174       AC_MSG_ERROR([libiberty missing]);;
2175   esac
2176 fi
2177
2178 # Sometimes we have special requirements for the host libiberty.
2179 extra_host_libiberty_configure_flags=
2180 case " $configdirs " in
2181   *" lto-plugin "* | *" libcc1 "*)
2182     # When these are to be built as shared libraries, the same applies to
2183     # libiberty.
2184     extra_host_libiberty_configure_flags=--enable-shared
2185     ;;
2186 esac
2187 AC_SUBST(extra_host_libiberty_configure_flags)
2188
2189 # Produce a warning message for the subdirs we can't configure.
2190 # This isn't especially interesting in the Cygnus tree, but in the individual
2191 # FSF releases, it's important to let people know when their machine isn't
2192 # supported by the one or two programs in a package.
2193
2194 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2195   # If $appdirs is non-empty, at least one of those directories must still
2196   # be configured, or we error out.  (E.g., if the gas release supports a
2197   # specified target in some subdirs but not the gas subdir, we shouldn't
2198   # pretend that all is well.)
2199   if test -n "$appdirs" ; then
2200     for dir in $appdirs ; do
2201       if test -r $dir/Makefile.in ; then
2202         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2203           appdirs=""
2204           break
2205         fi
2206         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2207           appdirs=""
2208           break
2209         fi
2210       fi
2211     done
2212     if test -n "$appdirs" ; then
2213       echo "*** This configuration is not supported by this package." 1>&2
2214       exit 1
2215     fi
2216   fi
2217   # Okay, some application will build, or we don't care to check.  Still
2218   # notify of subdirs not getting built.
2219   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2220   echo "    ${notsupp}" 1>&2
2221   echo "    (Any other directories should still work fine.)" 1>&2
2222 fi
2223
2224 case "$host" in
2225   *msdosdjgpp*)
2226     enable_gdbtk=no ;;
2227 esac
2228
2229 # To find our prefix, in gcc_cv_tool_prefix.
2230 ACX_TOOL_DIRS
2231
2232 copy_dirs=
2233
2234 AC_ARG_WITH([build-sysroot],
2235   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2236                   [use sysroot as the system root during the build])],
2237   [if test x"$withval" != x ; then
2238      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2239    fi],
2240   [SYSROOT_CFLAGS_FOR_TARGET=])
2241 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2242
2243 AC_ARG_WITH([debug-prefix-map],
2244   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2245                   [map A to B, C to D ... in debug information])],
2246   [if test x"$withval" != x; then
2247      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2248      for debug_map in $withval; do
2249        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2250      done
2251    fi],
2252   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2253 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2254
2255 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2256 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2257 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2258 # We want to ensure that TARGET libraries (which we know are built with
2259 # gcc) are built with "-O2 -g", so include those options when setting
2260 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2261 if test "x$CFLAGS_FOR_TARGET" = x; then
2262   CFLAGS_FOR_TARGET=$CFLAGS
2263   case " $CFLAGS " in
2264     *" -O2 "*) ;;
2265     *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2266   esac
2267   case " $CFLAGS " in
2268     *" -g "* | *" -g3 "*) ;;
2269     *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2270   esac
2271 fi
2272 AC_SUBST(CFLAGS_FOR_TARGET)
2273
2274 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2275   CXXFLAGS_FOR_TARGET=$CXXFLAGS
2276   case " $CXXFLAGS " in
2277     *" -O2 "*) ;;
2278     *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2279   esac
2280   case " $CXXFLAGS " in
2281     *" -g "* | *" -g3 "*) ;;
2282     *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2283   esac
2284 fi
2285 AC_SUBST(CXXFLAGS_FOR_TARGET)
2286
2287 AC_SUBST(LDFLAGS_FOR_TARGET)
2288
2289 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2290 # the named directory are copied to $(tooldir)/sys-include.
2291 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2292   if test x${is_cross_compiler} = xno ; then
2293     echo 1>&2 '***' --with-headers is only supported when cross compiling
2294     exit 1
2295   fi
2296   if test x"${with_headers}" != xyes ; then
2297     x=${gcc_cv_tool_prefix}
2298     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2299   fi
2300 fi
2301
2302 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2303 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2304 # are permitted.
2305 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2306   if test x${is_cross_compiler} = xno ; then
2307     echo 1>&2 '***' --with-libs is only supported when cross compiling
2308     exit 1
2309   fi
2310   if test x"${with_libs}" != xyes ; then
2311     # Copy the libraries in reverse order, so that files in the first named
2312     # library override files in subsequent libraries.
2313     x=${gcc_cv_tool_prefix}
2314     for l in ${with_libs}; do
2315       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2316     done
2317   fi
2318 fi
2319
2320 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2321 #
2322 # This is done by determining whether or not the appropriate directory
2323 # is available, and by checking whether or not specific configurations
2324 # have requested that this magic not happen.
2325 #
2326 # The command line options always override the explicit settings in
2327 # configure.in, and the settings in configure.in override this magic.
2328 #
2329 # If the default for a toolchain is to use GNU as and ld, and you don't
2330 # want to do that, then you should use the --without-gnu-as and
2331 # --without-gnu-ld options for the configure script.  Similarly, if
2332 # the default is to use the included zlib and you don't want to do that,
2333 # you should use the --with-system-zlib option for the configure script.
2334
2335 if test x${use_gnu_as} = x &&
2336    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2337   with_gnu_as=yes
2338   extra_host_args="$extra_host_args --with-gnu-as"
2339 fi
2340
2341 if test x${use_gnu_ld} = x &&
2342    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2343   with_gnu_ld=yes
2344   extra_host_args="$extra_host_args --with-gnu-ld"
2345 fi
2346
2347 if test x${use_included_zlib} = x &&
2348    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2349   :
2350 else
2351   with_system_zlib=yes
2352   extra_host_args="$extra_host_args --with-system-zlib"
2353 fi
2354
2355 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2356 # can detect this case.
2357
2358 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2359   with_newlib=yes
2360   extra_host_args="$extra_host_args --with-newlib"
2361 fi
2362
2363 # Handle ${copy_dirs}
2364 set fnord ${copy_dirs}
2365 shift
2366 while test $# != 0 ; do
2367   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2368     :
2369   else
2370     echo Copying $1 to $2
2371
2372     # Use the install script to create the directory and all required
2373     # parent directories.
2374     if test -d $2 ; then
2375       :
2376     else
2377       echo >config.temp
2378       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2379     fi
2380
2381     # Copy the directory, assuming we have tar.
2382     # FIXME: Should we use B in the second tar?  Not all systems support it.
2383     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2384
2385     # It is the responsibility of the user to correctly adjust all
2386     # symlinks.  If somebody can figure out how to handle them correctly
2387     # here, feel free to add the code.
2388
2389     echo $1 > $2/COPIED
2390   fi
2391   shift; shift
2392 done
2393
2394 # Determine a target-dependent exec_prefix that the installed
2395 # gcc will search in.  Keep this list sorted by triplet, with
2396 # the *-*-osname triplets last.
2397 md_exec_prefix=
2398 case "${target}" in
2399   i[[34567]]86-pc-msdosdjgpp*)
2400     md_exec_prefix=/dev/env/DJDIR/bin
2401     ;;
2402   *-*-hpux* | \
2403   *-*-nto-qnx* | \
2404   *-*-solaris2*)
2405     md_exec_prefix=/usr/ccs/bin
2406     ;;
2407 esac
2408
2409 extra_arflags_for_target=
2410 extra_nmflags_for_target=
2411 extra_ranlibflags_for_target=
2412 target_makefile_frag=/dev/null
2413 case "${target}" in
2414   spu-*-*)
2415     target_makefile_frag="config/mt-spu"
2416     ;;
2417   mips*-sde-elf* | mips*-mti-elf*)
2418     target_makefile_frag="config/mt-sde"
2419     ;;
2420   mipsisa*-*-elfoabi*)
2421     target_makefile_frag="config/mt-mips-elfoabi"
2422     ;;
2423   mips*-*-*linux* | mips*-*-gnu*)
2424     target_makefile_frag="config/mt-mips-gnu"
2425     ;;
2426   nios2-*-elf*)
2427     target_makefile_frag="config/mt-nios2-elf"
2428     ;;
2429   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2430     target_makefile_frag="config/mt-gnu"
2431     ;;
2432   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2433     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2434     # commands to handle both 32-bit and 64-bit objects.  These flags are
2435     # harmless if we're using GNU nm or ar.
2436     extra_arflags_for_target=" -X32_64"
2437     extra_nmflags_for_target=" -B -X32_64"
2438     ;;
2439 esac
2440
2441 alphaieee_frag=/dev/null
2442 case $target in
2443   alpha*-*-*)
2444     # This just makes sure to use the -mieee option to build target libs.
2445     # This should probably be set individually by each library.
2446     alphaieee_frag="config/mt-alphaieee"
2447     ;;
2448 esac
2449
2450 # If --enable-target-optspace always use -Os instead of -O2 to build
2451 # the target libraries, similarly if it is not specified, use -Os
2452 # on selected platforms.
2453 ospace_frag=/dev/null
2454 case "${enable_target_optspace}:${target}" in
2455   yes:*)
2456     ospace_frag="config/mt-ospace"
2457     ;;
2458   :d30v-*)
2459     ospace_frag="config/mt-d30v"
2460     ;;
2461   :m32r-* | :d10v-* | :fr30-*)
2462     ospace_frag="config/mt-ospace"
2463     ;;
2464   no:* | :*)
2465     ;;
2466   *)
2467     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2468     ;;
2469 esac
2470
2471 # Some systems (e.g., one of the i386-aix systems the gas testers are
2472 # using) don't handle "\$" correctly, so don't use it here.
2473 tooldir='${exec_prefix}'/${target_noncanonical}
2474 build_tooldir=${tooldir}
2475
2476 # Create a .gdbinit file which runs the one in srcdir
2477 # and tells GDB to look there for source files.
2478
2479 if test -r ${srcdir}/.gdbinit ; then
2480   case ${srcdir} in
2481     .) ;;
2482     *) cat > ./.gdbinit <<EOF
2483 # ${NO_EDIT}
2484 dir ${srcdir}
2485 dir .
2486 source ${srcdir}/.gdbinit
2487 EOF
2488     ;;
2489   esac
2490 fi
2491
2492 # Make sure that the compiler is able to generate an executable.  If it
2493 # can't, we are probably in trouble.  We don't care whether we can run the
2494 # executable--we might be using a cross compiler--we only care whether it
2495 # can be created.  At this point the main configure script has set CC.
2496 we_are_ok=no
2497 echo "int main () { return 0; }" > conftest.c
2498 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2499 if test $? = 0 ; then
2500   if test -s conftest || test -s conftest.exe ; then
2501     we_are_ok=yes
2502   fi
2503 fi
2504 case $we_are_ok in
2505   no)
2506     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2507     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2508     rm -f conftest*
2509     exit 1
2510     ;;
2511 esac
2512 rm -f conftest*
2513
2514 # Decide which environment variable is used to find dynamic libraries.
2515 case "${host}" in
2516   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2517   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2518   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2519   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2520 esac
2521
2522 # On systems where the dynamic library environment variable is PATH,
2523 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2524 # built executables to PATH.
2525 if test "$RPATH_ENVVAR" = PATH; then
2526   GCC_SHLIB_SUBDIR=/shlib
2527 else
2528   GCC_SHLIB_SUBDIR=
2529 fi
2530
2531 # Adjust the toplevel makefile according to whether bootstrap was selected.
2532 case $enable_bootstrap in
2533   yes)
2534     bootstrap_suffix=bootstrap
2535     BUILD_CONFIG=bootstrap-debug
2536     ;;
2537   no)
2538     bootstrap_suffix=no-bootstrap
2539     BUILD_CONFIG=
2540     ;;
2541 esac
2542
2543 AC_MSG_CHECKING(for default BUILD_CONFIG)
2544
2545 AC_ARG_WITH([build-config],
2546   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2547                   [use config/NAME.mk build configuration])],
2548   [case $with_build_config in
2549    yes) with_build_config= ;;
2550    no) with_build_config= BUILD_CONFIG= ;;
2551    esac])
2552
2553 if test "x${with_build_config}" != x; then
2554   BUILD_CONFIG=$with_build_config
2555 else
2556   case $BUILD_CONFIG in
2557   bootstrap-debug)
2558     if echo "int f (void) { return 0; }" > conftest.c &&
2559        ${CC} -c conftest.c &&
2560        mv conftest.o conftest.o.g0 &&
2561        ${CC} -c -g conftest.c &&
2562        mv conftest.o conftest.o.g &&
2563        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2564       :
2565     else
2566       BUILD_CONFIG=
2567     fi
2568     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2569     ;;
2570   esac
2571 fi
2572 AC_MSG_RESULT($BUILD_CONFIG)
2573 AC_SUBST(BUILD_CONFIG)
2574
2575 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2576 AC_MSG_CHECKING([for --enable-vtable-verify])
2577 AC_ARG_ENABLE(vtable-verify,
2578 [  --enable-vtable-verify    Enable vtable verification feature ],
2579 [case "$enableval" in
2580  yes) enable_vtable_verify=yes ;;
2581  no)  enable_vtable_verify=no ;;
2582  *)   enable_vtable_verify=no;;
2583  esac],
2584 [enable_vtable_verify=no])
2585 AC_MSG_RESULT($enable_vtable_verify)
2586
2587 # Record target_configdirs and the configure arguments for target and
2588 # build configuration in Makefile.
2589 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2590 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2591 bootstrap_fixincludes=no
2592
2593 # If we are building libgomp, bootstrap it.
2594 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2595   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2596 fi
2597
2598 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2599 # or bootstrap-ubsan, bootstrap it.
2600 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2601   case "$BUILD_CONFIG" in
2602     *bootstrap-asan* | *bootstrap-ubsan* )
2603       bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2604       bootstrap_fixincludes=yes
2605       ;;
2606   esac
2607 fi
2608
2609 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
2610 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2611    test "$enable_vtable_verify" != no; then
2612   bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2613 fi
2614
2615 # Determine whether gdb needs tk/tcl or not.
2616 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2617 # and in that case we want gdb to be built without tk.  Ugh!
2618 # In fact I believe gdb is the *only* package directly dependent on tk,
2619 # so we should be able to put the 'maybe's in unconditionally and
2620 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2621 # 100% sure that that's safe though.
2622
2623 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2624 case "$enable_gdbtk" in
2625   no)
2626     GDB_TK="" ;;
2627   yes)
2628     GDB_TK="${gdb_tk}" ;;
2629   *)
2630     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2631     # distro.  Eventually someone will fix this and move Insight, nee
2632     # gdbtk to a separate directory.
2633     if test -d ${srcdir}/gdb/gdbtk ; then
2634       GDB_TK="${gdb_tk}"
2635     else
2636       GDB_TK=""
2637     fi
2638     ;;
2639 esac
2640 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2641 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2642
2643 # Strip out unwanted targets.
2644
2645 # While at that, we remove Makefiles if we were started for recursive
2646 # configuration, so that the top-level Makefile reconfigures them,
2647 # like we used to do when configure itself was recursive.
2648
2649 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2650 # but now we're fixing up the Makefile ourselves with the additional
2651 # commands passed to AC_CONFIG_FILES.  Use separate variables
2652 # extrasub-{build,host,target} not because there is any reason to split
2653 # the substitutions up that way, but only to remain below the limit of
2654 # 99 commands in a script, for HP-UX sed.
2655 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2656
2657 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2658   yes:yes:*\ gold\ *:*,c++,*) ;;
2659   yes:yes:*\ gold\ *:*)
2660     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2661     ;;
2662 esac
2663
2664 extrasub_build=
2665 for module in ${build_configdirs} ; do
2666   if test -z "${no_recursion}" \
2667      && test -f ${build_subdir}/${module}/Makefile; then
2668     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2669     rm -f ${build_subdir}/${module}/Makefile
2670   fi
2671   extrasub_build="$extrasub_build
2672 /^@if build-$module\$/d
2673 /^@endif build-$module\$/d
2674 /^@if build-$module-$bootstrap_suffix\$/d
2675 /^@endif build-$module-$bootstrap_suffix\$/d"
2676 done
2677 extrasub_host=
2678 for module in ${configdirs} ; do
2679   if test -z "${no_recursion}"; then
2680     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2681       if test -f ${file}; then
2682         echo 1>&2 "*** removing ${file} to force reconfigure"
2683         rm -f ${file}
2684       fi
2685     done
2686   fi
2687   case ${module},${bootstrap_fixincludes} in
2688     fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2689     *) host_bootstrap_suffix=$bootstrap_suffix ;;
2690   esac
2691   extrasub_host="$extrasub_host
2692 /^@if $module\$/d
2693 /^@endif $module\$/d
2694 /^@if $module-$host_bootstrap_suffix\$/d
2695 /^@endif $module-$host_bootstrap_suffix\$/d"
2696 done
2697 extrasub_target=
2698 for module in ${target_configdirs} ; do
2699   if test -z "${no_recursion}" \
2700      && test -f ${target_subdir}/${module}/Makefile; then
2701     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2702     rm -f ${target_subdir}/${module}/Makefile
2703   fi
2704
2705   # We only bootstrap target libraries listed in bootstrap_target_libs.
2706   case $bootstrap_target_libs in
2707     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2708     *) target_bootstrap_suffix=no-bootstrap ;;
2709   esac
2710
2711   extrasub_target="$extrasub_target
2712 /^@if target-$module\$/d
2713 /^@endif target-$module\$/d
2714 /^@if target-$module-$target_bootstrap_suffix\$/d
2715 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2716 done
2717
2718 # Do the final fixup along with target modules.
2719 extrasub_target="$extrasub_target
2720 /^@if /,/^@endif /d"
2721
2722 # Create the serialization dependencies.  This uses a temporary file.
2723
2724 AC_ARG_ENABLE([serial-configure],
2725 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2726                 [force sequential configuration of
2727                  sub-packages for the host, target or build
2728                  machine, or all sub-packages])])
2729
2730 case ${enable_serial_configure} in
2731   yes)
2732     enable_serial_build_configure=yes
2733     enable_serial_host_configure=yes
2734     enable_serial_target_configure=yes
2735     ;;
2736 esac
2737
2738 # These force 'configure's to be done one at a time, to avoid problems
2739 # with contention over a shared config.cache.
2740 rm -f serdep.tmp
2741 echo '# serdep.tmp' > serdep.tmp
2742 olditem=
2743 test "x${enable_serial_build_configure}" = xyes &&
2744 for item in ${build_configdirs} ; do
2745   case ${olditem} in
2746     "") ;;
2747     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2748   esac
2749   olditem=${item}
2750 done
2751 olditem=
2752 test "x${enable_serial_host_configure}" = xyes &&
2753 for item in ${configdirs} ; do
2754   case ${olditem} in
2755     "") ;;
2756     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2757   esac
2758   olditem=${item}
2759 done
2760 olditem=
2761 test "x${enable_serial_target_configure}" = xyes &&
2762 for item in ${target_configdirs} ; do
2763   case ${olditem} in
2764     "") ;;
2765     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2766   esac
2767   olditem=${item}
2768 done
2769 serialization_dependencies=serdep.tmp
2770 AC_SUBST_FILE(serialization_dependencies)
2771
2772 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2773 # target, nonopt, and variable assignments.  These are the ones we
2774 # might not want to pass down to subconfigures.  The exception being
2775 # --cache-file=/dev/null, which is used to turn off the use of cache
2776 # files altogether, and which should be passed on to subconfigures.
2777 # Also strip program-prefix, program-suffix, and program-transform-name,
2778 # so that we can pass down a consistent program-transform-name.
2779 baseargs=
2780 tbaseargs=
2781 keep_next=no
2782 skip_next=no
2783 eval "set -- $ac_configure_args"
2784 for ac_arg
2785 do
2786   if test X"$skip_next" = X"yes"; then
2787     skip_next=no
2788     continue
2789   fi
2790   if test X"$keep_next" = X"yes"; then
2791     case $ac_arg in
2792       *\'*)
2793         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2794     esac
2795     baseargs="$baseargs '$ac_arg'"
2796     tbaseargs="$tbaseargs '$ac_arg'"
2797     keep_next=no
2798     continue
2799   fi
2800
2801   # Handle separated arguments.  Based on the logic generated by
2802   # autoconf 2.59.
2803   case $ac_arg in
2804     *=* | --config-cache | -C | -disable-* | --disable-* \
2805       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2806       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2807       | -with-* | --with-* | -without-* | --without-* | --x)
2808       separate_arg=no
2809       ;;
2810     -*)
2811       separate_arg=yes
2812       ;;
2813     *)
2814       separate_arg=no
2815       ;;
2816   esac
2817
2818   skip_targ=no
2819   case $ac_arg in
2820 changequote(,)
2821   --with-* | --without-*)
2822     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2823
2824     case $libopt in
2825     *[-_]include)
2826       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2827       ;;
2828     *[-_]lib)
2829       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2830       ;;
2831     *)
2832       lib=$libopt
2833       ;;
2834     esac
2835 changequote([,])
2836
2837     case $lib in
2838     mpc | mpfr | gmp | isl | cloog)
2839       # If we're processing --with-$lib, --with-$lib-include or
2840       # --with-$lib-lib, for one of the libs above, and target is
2841       # different from host, don't pass the current argument to any
2842       # target library's configure.
2843       if test x$is_cross_compiler = xyes; then
2844         skip_targ=yes
2845       fi
2846       ;;
2847     esac
2848     ;;
2849   esac
2850
2851   case "$ac_arg" in
2852     --cache-file=/dev/null | \
2853     -cache-file=/dev/null )
2854       # Handled here to avoid the test to skip args below.
2855       baseargs="$baseargs '$ac_arg'"
2856       tbaseargs="$tbaseargs '$ac_arg'"
2857       # Assert: $separate_arg should always be no.
2858       keep_next=$separate_arg
2859       ;;
2860     --no*)
2861       continue
2862       ;;
2863     --c* | \
2864     --sr* | \
2865     --ho* | \
2866     --bu* | \
2867     --t* | \
2868     --program-* | \
2869     -cache_file* | \
2870     -srcdir* | \
2871     -host* | \
2872     -build* | \
2873     -target* | \
2874     -program-prefix* | \
2875     -program-suffix* | \
2876     -program-transform-name* )
2877       skip_next=$separate_arg
2878       continue
2879       ;;
2880     -*)
2881       # An option.  Add it.
2882       case $ac_arg in
2883         *\'*)
2884           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2885       esac
2886       baseargs="$baseargs '$ac_arg'"
2887       if test X"$skip_targ" = Xno; then
2888         tbaseargs="$tbaseargs '$ac_arg'"
2889       fi
2890       keep_next=$separate_arg
2891       ;;
2892     *)
2893       # Either a variable assignment, or a nonopt (triplet).  Don't
2894       # pass it down; let the Makefile handle this.
2895       continue
2896       ;;
2897   esac
2898 done
2899 # Remove the initial space we just introduced and, as these will be
2900 # expanded by make, quote '$'.
2901 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2902
2903 # Add in --program-transform-name, after --program-prefix and
2904 # --program-suffix have been applied to it.  Autoconf has already
2905 # doubled dollar signs and backslashes in program_transform_name; we want
2906 # the backslashes un-doubled, and then the entire thing wrapped in single
2907 # quotes, because this will be expanded first by make and then by the shell.
2908 # Also, because we want to override the logic in subdir configure scripts to
2909 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2910 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2911 ${program_transform_name}
2912 EOF_SED
2913 gcc_transform_name=`cat conftestsed.out`
2914 rm -f conftestsed.out
2915 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2916 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2917 if test "$silent" = yes; then
2918   baseargs="$baseargs --silent"
2919   tbaseargs="$tbaseargs --silent"
2920 fi
2921 baseargs="$baseargs --disable-option-checking"
2922 tbaseargs="$tbaseargs --disable-option-checking"
2923
2924 # Record and document user additions to sub configure arguments.
2925 AC_ARG_VAR([build_configargs],
2926            [additional configure arguments for build directories])
2927 AC_ARG_VAR([host_configargs],
2928            [additional configure arguments for host directories])
2929 AC_ARG_VAR([target_configargs],
2930            [additional configure arguments for target directories])
2931
2932 # For the build-side libraries, we just need to pretend we're native,
2933 # and not use the same cache file.  Multilibs are neither needed nor
2934 # desired.  We can't even use the same cache file for all build-side
2935 # libraries, as they're compiled differently; some with C, some with
2936 # C++ or with different feature-enabling options.
2937 build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
2938
2939 # For host modules, accept cache file option, or specification as blank.
2940 case "${cache_file}" in
2941 "") # empty
2942   cache_file_option="" ;;
2943 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2944   cache_file_option="--cache-file=${cache_file}" ;;
2945 *) # relative path
2946   cache_file_option="--cache-file=../${cache_file}" ;;
2947 esac
2948
2949 # Host dirs don't like to share a cache file either, horribly enough.
2950 # This seems to be due to autoconf 2.5x stupidity.
2951 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2952
2953 target_configargs="$target_configargs ${tbaseargs}"
2954
2955 # Passing a --with-cross-host argument lets the target libraries know
2956 # whether they are being built with a cross-compiler or being built
2957 # native.  However, it would be better to use other mechanisms to make the
2958 # sorts of decisions they want to make on this basis.  Please consider
2959 # this option to be deprecated.  FIXME.
2960 if test x${is_cross_compiler} = xyes ; then
2961   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
2962 fi
2963
2964 # Special user-friendly check for native x86_64-linux build, if
2965 # multilib is not explicitly enabled.
2966 case "$target:$have_compiler:$host:$target:$enable_multilib" in
2967   x86_64-*linux*:yes:$build:$build:)
2968     # Make sure we have a developement environment that handles 32-bit
2969     dev64=no
2970     echo "int main () { return 0; }" > conftest.c
2971     ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2972     if test $? = 0 ; then
2973       if test -s conftest || test -s conftest.exe ; then
2974         dev64=yes
2975       fi
2976     fi
2977     rm -f conftest*
2978     if test x${dev64} != xyes ; then
2979       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.])
2980     fi
2981     ;;
2982 esac
2983
2984 # Default to --enable-multilib.
2985 if test x${enable_multilib} = x ; then
2986   target_configargs="--enable-multilib ${target_configargs}"
2987 fi
2988
2989 # Pass --with-newlib if appropriate.  Note that target_configdirs has
2990 # changed from the earlier setting of with_newlib.
2991 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
2992   target_configargs="--with-newlib ${target_configargs}"
2993 fi
2994
2995 # Different target subdirs use different values of certain variables
2996 # (notably CXX).  Worse, multilibs use *lots* of different values.
2997 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
2998 # it doesn't automatically accept command-line overrides of them.
2999 # This means it's not safe for target subdirs to share a cache file,
3000 # which is disgusting, but there you have it.  Hopefully this can be
3001 # fixed in future.  It's still worthwhile to use a cache file for each
3002 # directory.  I think.
3003
3004 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3005 # We need to pass --target, as newer autoconf's requires consistency
3006 # for target_alias and gcc doesn't manage it consistently.
3007 target_configargs="--cache-file=./config.cache ${target_configargs}"
3008
3009 FLAGS_FOR_TARGET=
3010 case " $target_configdirs " in
3011  *" newlib "*)
3012   case " $target_configargs " in
3013   *" --with-newlib "*)
3014    case "$target" in
3015     *-cygwin*)
3016       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3017       ;;
3018    esac
3019
3020    # If we're not building GCC, don't discard standard headers.
3021    if test -d ${srcdir}/gcc; then
3022      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3023
3024      if test "${build}" != "${host}"; then
3025        # On Canadian crosses, CC_FOR_TARGET will have already been set
3026        # by `configure', so we won't have an opportunity to add -Bgcc/
3027        # to it.  This is right: we don't want to search that directory
3028        # for binaries, but we want the header files in there, so add
3029        # them explicitly.
3030        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3031
3032        # Someone might think of using the pre-installed headers on
3033        # Canadian crosses, in case the installed compiler is not fully
3034        # compatible with the compiler being built.  In this case, it
3035        # would be better to flag an error than risking having
3036        # incompatible object files being constructed.  We can't
3037        # guarantee that an error will be flagged, but let's hope the
3038        # compiler will do it, when presented with incompatible header
3039        # files.
3040      fi
3041    fi
3042
3043    case "${target}-${is_cross_compiler}" in
3044    i[[3456789]]86-*-linux*-no)
3045       # Here host == target, so we don't need to build gcc,
3046       # so we don't want to discard standard headers.
3047       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3048       ;;
3049    *)
3050       # If we're building newlib, use its generic headers last, but search
3051       # for any libc-related directories first (so make it the last -B
3052       # switch).
3053       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3054
3055       # If we're building libgloss, find the startup file, simulator library
3056       # and linker script.
3057       case " $target_configdirs " in
3058         *" libgloss "*)
3059         # Look for startup file, simulator library and maybe linker script.
3060         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3061         # Look for libnosys.a in case the target needs it.
3062         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3063         # Most targets have the linker script in the source directory.
3064         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3065         ;;
3066       esac
3067       ;;
3068    esac
3069    ;;
3070   esac
3071   ;;
3072 esac
3073
3074 case "$target" in
3075   x86_64-*mingw* | *-w64-mingw*)
3076   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3077   # however, use a symlink named 'mingw' in ${prefix} .
3078     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3079     ;;
3080   *-mingw*)
3081   # MinGW can't be handled as Cygwin above since it does not use newlib.
3082     FLAGS_FOR_TARGET=$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'
3083     ;;
3084 esac
3085
3086 # Allow the user to override the flags for
3087 # our build compiler if desired.
3088 if test x"${build}" = x"${host}" ; then
3089   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3090   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3091   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3092 fi
3093
3094 # On Canadian crosses, we'll be searching the right directories for
3095 # the previously-installed cross compiler, so don't bother to add
3096 # flags for directories within the install tree of the compiler
3097 # being built; programs in there won't even run.
3098 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3099   # Search for pre-installed headers if nothing else fits.
3100   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3101 fi
3102
3103 if test "x${use_gnu_ld}" = x &&
3104    echo " ${configdirs} " | grep " ld " > /dev/null ; then
3105   # Arrange for us to find uninstalled linker scripts.
3106   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3107 fi
3108
3109 # Search for other target-specific linker scripts and such.
3110 case "${target}" in
3111   mep*)
3112     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3113     ;;
3114 esac
3115
3116 # Makefile fragments.
3117 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3118 do
3119   eval fragval=\$$frag
3120   if test $fragval != /dev/null; then
3121     eval $frag=${srcdir}/$fragval
3122   fi
3123 done
3124 AC_SUBST_FILE(host_makefile_frag)
3125 AC_SUBST_FILE(target_makefile_frag)
3126 AC_SUBST_FILE(alphaieee_frag)
3127 AC_SUBST_FILE(ospace_frag)
3128
3129 # Miscellanea: directories, flags, etc.
3130 AC_SUBST(RPATH_ENVVAR)
3131 AC_SUBST(GCC_SHLIB_SUBDIR)
3132 AC_SUBST(tooldir)
3133 AC_SUBST(build_tooldir)
3134 AC_SUBST(CONFIGURE_GDB_TK)
3135 AC_SUBST(GDB_TK)
3136 AC_SUBST(INSTALL_GDB_TK)
3137
3138 # Build module lists & subconfigure args.
3139 AC_SUBST(build_configargs)
3140 AC_SUBST(build_configdirs)
3141
3142 # Host module lists & subconfigure args.
3143 AC_SUBST(host_configargs)
3144 AC_SUBST(configdirs)
3145 AC_SUBST(target_configdirs)
3146
3147 # Target module lists & subconfigure args.
3148 AC_SUBST(target_configargs)
3149
3150
3151 # Build tools.
3152 AC_SUBST(AR_FOR_BUILD)
3153 AC_SUBST(AS_FOR_BUILD)
3154 AC_SUBST(CC_FOR_BUILD)
3155 AC_SUBST(CFLAGS_FOR_BUILD)
3156 AC_SUBST(CXXFLAGS_FOR_BUILD)
3157 AC_SUBST(CXX_FOR_BUILD)
3158 AC_SUBST(DLLTOOL_FOR_BUILD)
3159 AC_SUBST(GCJ_FOR_BUILD)
3160 AC_SUBST(GFORTRAN_FOR_BUILD)
3161 AC_SUBST(GOC_FOR_BUILD)
3162 AC_SUBST(LDFLAGS_FOR_BUILD)
3163 AC_SUBST(LD_FOR_BUILD)
3164 AC_SUBST(NM_FOR_BUILD)
3165 AC_SUBST(RANLIB_FOR_BUILD)
3166 AC_SUBST(WINDMC_FOR_BUILD)
3167 AC_SUBST(WINDRES_FOR_BUILD)
3168
3169 # Generate default definitions for YACC, M4, LEX and other programs that run
3170 # on the build machine.  These are used if the Makefile can't locate these
3171 # programs in objdir.
3172 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3173
3174 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3175 case " $build_configdirs " in
3176   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3177 esac
3178
3179 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3180 case " $build_configdirs " in
3181   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3182 esac
3183
3184 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3185 case " $build_configdirs " in
3186   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3187 esac
3188
3189 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3190 case " $build_configdirs " in
3191   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3192   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3193 esac
3194
3195 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3196 case " $build_configdirs " in
3197   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3198 esac
3199
3200 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3201 case " $build_configdirs " in
3202   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3203   *)
3204 changequote(,)
3205     # For an installed makeinfo, we require it to be from texinfo 4.7 or
3206     # higher, else we use the "missing" dummy.
3207     if ${MAKEINFO} --version \
3208        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3209       :
3210     else
3211       MAKEINFO="$MISSING makeinfo"
3212     fi
3213     ;;
3214 changequote([,])
3215 esac
3216
3217 # FIXME: expect and dejagnu may become build tools?
3218
3219 AC_CHECK_PROGS(EXPECT, expect, expect)
3220 case " $configdirs " in
3221   *" expect "*)
3222     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3223     ;;
3224 esac
3225
3226 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3227 case " $configdirs " in
3228   *" dejagnu "*)
3229     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3230     ;;
3231 esac
3232
3233
3234 # Host tools.
3235 NCN_STRICT_CHECK_TOOLS(AR, ar)
3236 NCN_STRICT_CHECK_TOOLS(AS, as)
3237 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3238 NCN_STRICT_CHECK_TOOLS(LD, ld)
3239 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3240 NCN_STRICT_CHECK_TOOLS(NM, nm)
3241 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3242 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3243 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3244 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3245 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3246 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3247 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3248 AC_SUBST(CC)
3249 AC_SUBST(CXX)
3250 AC_SUBST(CFLAGS)
3251 AC_SUBST(CXXFLAGS)
3252
3253 # Target tools.
3254 AC_ARG_WITH([build-time-tools],
3255   [AS_HELP_STRING([--with-build-time-tools=PATH],
3256                   [use given path to find target tools during the build])],
3257   [case x"$withval" in
3258      x/*) ;;
3259      *)
3260        with_build_time_tools=
3261        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3262        ;;
3263    esac],
3264   [with_build_time_tools=])
3265
3266 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3267 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3268 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3269 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3270 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3271 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3272
3273 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3274 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3275 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3276 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3277 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3278 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3279 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3280 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3281 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3282 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3283 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3284 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3285
3286 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3287
3288 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3289 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3290 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3291 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3292 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3293                 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3294                 c++)
3295 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3296                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3297                 c++)
3298 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3299 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3300 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3301                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3302 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3303                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3304 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3305                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3306 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3307 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3308 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3309 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3310 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3311 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3312 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3313 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3314 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3315
3316 AC_SUBST(FLAGS_FOR_TARGET)
3317 AC_SUBST(RAW_CXX_FOR_TARGET)
3318
3319 # Certain tools may need extra flags.
3320 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3321 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3322 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3323
3324 # When building target libraries, except in a Canadian cross, we use
3325 # the same toolchain as the compiler we just built.
3326 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3327 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3328 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3329 if test $host = $build; then
3330   case " $configdirs " in
3331     *" gcc "*)
3332       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3333       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3334       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3335       ;;
3336   esac
3337 fi
3338
3339 AC_SUBST(COMPILER_AS_FOR_TARGET)
3340 AC_SUBST(COMPILER_LD_FOR_TARGET)
3341 AC_SUBST(COMPILER_NM_FOR_TARGET)
3342
3343 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3344 AC_ARG_ENABLE(maintainer-mode,
3345 [AS_HELP_STRING([--enable-maintainer-mode],
3346                 [enable make rules and dependencies not useful
3347                  (and sometimes confusing) to the casual installer])],
3348       USE_MAINTAINER_MODE=$enableval,
3349       USE_MAINTAINER_MODE=no)
3350 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3351 AC_SUBST(MAINTAINER_MODE_TRUE)
3352 AC_SUBST(MAINTAINER_MODE_FALSE)
3353 if test "$USE_MAINTAINER_MODE" = yes; then
3354   MAINTAINER_MODE_TRUE=
3355   MAINTAINER_MODE_FALSE='#'
3356 else
3357   MAINTAINER_MODE_TRUE='#'
3358   MAINTAINER_MODE_FALSE=
3359 fi
3360 MAINT=$MAINTAINER_MODE_TRUE
3361 AC_SUBST(MAINT)dnl
3362
3363 # ---------------------
3364 # GCC bootstrap support
3365 # ---------------------
3366
3367 # Stage specific cflags for build.
3368 stage1_cflags="-g"
3369 case $build in
3370   vax-*-*)
3371     case ${GCC} in
3372       yes) stage1_cflags="-g -Wa,-J" ;;
3373       *) stage1_cflags="-g -J" ;;
3374     esac ;;
3375 esac
3376
3377 AC_SUBST(stage1_cflags)
3378
3379 # Enable --enable-checking in stage1 of the compiler.
3380 AC_ARG_ENABLE(stage1-checking,
3381 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3382                 [choose additional checking for stage1 of the compiler])],
3383 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3384 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3385   stage1_checking=--enable-checking=yes,types
3386 else
3387   stage1_checking=--enable-checking=$enable_checking,types
3388 fi])
3389 AC_SUBST(stage1_checking)
3390
3391 # Enable -Werror in bootstrap stage2 and later.
3392 AC_ARG_ENABLE(werror,
3393 [AS_HELP_STRING([--enable-werror],
3394                 [enable -Werror in bootstrap stage2 and later])], [],
3395 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3396   enable_werror=yes
3397 else
3398   enable_werror=no
3399 fi])
3400 case ${enable_werror} in
3401   yes) stage2_werror_flag="--enable-werror-always" ;;
3402   *) stage2_werror_flag="" ;;
3403 esac
3404 AC_SUBST(stage2_werror_flag)
3405
3406 # Enable --enable-host-shared.
3407 AC_ARG_ENABLE(host-shared,
3408 [AS_HELP_STRING([--enable-host-shared],
3409                 [build host code as shared libraries])],
3410 [host_shared=$enableval], [host_shared=no])
3411 AC_SUBST(host_shared)
3412
3413 # Specify what files to not compare during bootstrap.
3414
3415 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3416 case "$target" in
3417   hppa*64*-*-hpux*) ;;
3418   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3419   powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3420 esac
3421 AC_SUBST(compare_exclusions)
3422
3423 AC_CONFIG_FILES([Makefile],
3424   [sed "$extrasub_build" Makefile |
3425    sed "$extrasub_host" |
3426    sed "$extrasub_target" > mf$$
3427    mv -f mf$$ Makefile],
3428   [extrasub_build="$extrasub_build"
3429    extrasub_host="$extrasub_host"
3430    extrasub_target="$extrasub_target"])
3431 AC_OUTPUT