configure.ac

   1 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2 #   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 ##############################################################################
  20 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
  21
  22 m4_include(config/acx.m4)
  23 m4_include(config/override.m4)
  24 m4_include(config/proginstall.m4)
  25 m4_include(config/elf.m4)
  26 m4_include([libtool.m4])
  27 m4_include([ltoptions.m4])
  28 m4_include([ltsugar.m4])
  29 m4_include([ltversion.m4])
  30 m4_include([lt~obsolete.m4])
  31 m4_include([config/isl.m4])
  32 m4_include([config/cloog.m4])
  33
  34 AC_INIT(move-if-change)
  35 AC_PREREQ(2.64)
  36 AC_DISABLE_OPTION_CHECKING
  37
  38 progname=$0
  39 # if PWD already has a value, it is probably wrong.
  40 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
  41
  42 # Export original configure arguments for use by sub-configures.
  43 # Quote arguments with shell meta charatcers.
  44 TOPLEVEL_CONFIGURE_ARGUMENTS=
  45 set -- "$progname" "$@"
  46 for ac_arg
  47 do
  48   case "$ac_arg" in
  49   *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
  50     ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
  51     # if the argument is of the form -foo=baz, quote the baz part only
  52     ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  53   *) ;;
  54   esac
  55   # Add the quoted argument to the list.
  56   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
  57 done
  58 if test "$silent" = yes; then
  59   TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
  60 fi
  61 # Remove the initial space we just introduced and, as these will be
  62 # expanded by make, quote '$'.
  63 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
  64 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
  65
  66 # Find the build, host, and target systems.
  67 ACX_NONCANONICAL_BUILD
  68 ACX_NONCANONICAL_HOST
  69 ACX_NONCANONICAL_TARGET
  70
  71 dnl Autoconf 2.5x and later will set a default program prefix if
  72 dnl --target was used, even if it was the same as --host.  Disable
  73 dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
  74 dnl to take effect.
  75 test "$host_noncanonical" = "$target_noncanonical" &&
  76   test "$program_prefix$program_suffix$program_transform_name" = \
  77     NONENONEs,x,x, &&
  78   program_transform_name=s,y,y,
  79
  80 AC_CANONICAL_SYSTEM
  81 AC_ARG_PROGRAM
  82
  83 m4_pattern_allow([^AS_FOR_TARGET$])dnl
  84 m4_pattern_allow([^AS_FOR_BUILD$])dnl
  85
  86 # Get 'install' or 'install-sh' and its variants.
  87 AC_PROG_INSTALL
  88 ACX_PROG_LN
  89 AC_PROG_LN_S
  90 AC_PROG_SED
  91 AC_PROG_AWK
  92
  93 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
  94
  95 # We pass INSTALL explicitly to sub-makes.  Make sure that it is not
  96 # a relative path.
  97 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  98   INSTALL="${srcpwd}/install-sh -c"
  99 fi
 100
 101 # Set srcdir to "." if that's what it is.
 102 # This is important for multilib support.
 103 pwd=`${PWDCMD-pwd}`
 104 if test "${pwd}" = "${srcpwd}" ; then
 105   srcdir=.
 106 fi
 107
 108 topsrcdir=$srcpwd
 109
 110 extra_host_args=
 111
 112 ### To add a new directory to the tree, first choose whether it is a target
 113 ### or a host dependent tool.  Then put it into the appropriate list
 114 ### (library or tools, host or target), doing a dependency sort.
 115
 116 # Subdirs will be configured in the order listed in build_configdirs,
 117 # configdirs, or target_configdirs; see the serialization section below.
 118
 119 # Dependency sorting is only needed when *configuration* must be done in
 120 # a particular order.  In all cases a dependency should be specified in
 121 # the Makefile, whether or not it's implicitly specified here.
 122
 123 # Double entries in build_configdirs, configdirs, or target_configdirs may
 124 # cause circular dependencies and break everything horribly.
 125
 126 # these library is used by various programs built for the build
 127 # environment
 128 #
 129 build_libs="build-libiberty"
 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 #
 136 host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp libdecnumber gmp mpfr mpc isl cloog libelf libiconv"
 137
 138 # these tools are built for the host environment
 139 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
 140 # know that we are building the simulator.
 141 # binutils, gas and ld appear in that order because it makes sense to run
 142 # "make check" in that particular order.
 143 # If --enable-gold is used, "gold" may replace "ld".
 144 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools"
 145
 146 # libgcj represents the runtime libraries only used by gcj.
 147 libgcj="target-libffi \
 148         target-zlib \
 149         target-libjava"
 150
 151 # these libraries are built for the target environment, and are built after
 152 # the host libraries and the host tools (which may be a cross compiler)
 153 # Note that libiberty is not a target library.
 154 target_libraries="target-libgcc \
 155                 target-libgloss \
 156                 target-newlib \
 157                 target-libgomp \
 158                 target-libatomic \
 159                 target-libitm \
 160                 target-libstdc++-v3 \
 161                 target-libmudflap \
 162                 target-libssp \
 163                 target-libquadmath \
 164                 target-libgfortran \
 165                 target-boehm-gc \
 166                 ${libgcj} \
 167                 target-libobjc \
 168                 target-libada \
 169                 target-libgo"
 170
 171 # these tools are built using the target libraries, and are intended to
 172 # run only in the target environment
 173 #
 174 # note: any program that *uses* libraries that are in the "target_libraries"
 175 # list belongs in this list.
 176 #
 177 target_tools="target-rda"
 178
 179 ################################################################################
 180
 181 ## All tools belong in one of the four categories, and are assigned above
 182 ## We assign ${configdirs} this way to remove all embedded newlines.  This
 183 ## is important because configure will choke if they ever get through.
 184 ## ${configdirs} is directories we build using the host tools.
 185 ## ${target_configdirs} is directories we build using the target tools.
 186 configdirs=`echo ${host_libs} ${host_tools}`
 187 target_configdirs=`echo ${target_libraries} ${target_tools}`
 188 build_configdirs=`echo ${build_libs} ${build_tools}`
 189
 190 m4_divert_text([PARSE_ARGS],
 191 [case $srcdir in
 192   *" "*)
 193 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
 194     AC_MSG_ERROR([path to source, $srcdir, contains spaces])
 195 m4_popdef([AS_MESSAGE_LOG_FD])dnl
 196     ;;
 197 esac
 198 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
 199 ])
 200
 201 ################################################################################
 202
 203 srcname="gnu development package"
 204
 205 # This gets set non-empty for some net releases of packages.
 206 appdirs=""
 207
 208 # Define is_cross_compiler to save on calls to 'test'.
 209 is_cross_compiler=
 210 if test x"${host}" = x"${target}" ; then
 211   is_cross_compiler=no
 212 else
 213   is_cross_compiler=yes
 214 fi
 215
 216 # Find the build and target subdir names.
 217 GCC_TOPLEV_SUBDIRS
 218 # Be sure to cover against remnants of an in-tree build.
 219 if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
 220   AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
 221 Use a pristine source tree when building in a separate tree])
 222 fi
 223
 224 # Skipdirs are removed silently.
 225 skipdirs=
 226 # Noconfigdirs are removed loudly.
 227 noconfigdirs=""
 228
 229 use_gnu_ld=
 230 # Make sure we don't let GNU ld be added if we didn't want it.
 231 if test x$with_gnu_ld = xno ; then
 232   use_gnu_ld=no
 233   noconfigdirs="$noconfigdirs ld gold"
 234 fi
 235
 236 use_gnu_as=
 237 # Make sure we don't let GNU as be added if we didn't want it.
 238 if test x$with_gnu_as = xno ; then
 239   use_gnu_as=no
 240   noconfigdirs="$noconfigdirs gas"
 241 fi
 242
 243 use_included_zlib=
 244 # Make sure we don't let ZLIB be added if we didn't want it.
 245 if test x$with_system_zlib = xyes ; then
 246   use_included_zlib=no
 247   noconfigdirs="$noconfigdirs zlib"
 248 fi
 249
 250 # some tools are so dependent upon X11 that if we're not building with X,
 251 # it's not even worth trying to configure, much less build, that tool.
 252
 253 case ${with_x} in
 254   yes | "") ;; # the default value for this tree is that X11 is available
 255   no)
 256     skipdirs="${skipdirs} tk itcl libgui"
 257     # We won't be able to build gdbtk without X.
 258     enable_gdbtk=no
 259     ;;
 260   *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
 261 esac
 262
 263 # Some are only suitable for cross toolchains.
 264 # Remove these if host=target.
 265 cross_only="target-libgloss target-newlib target-opcodes"
 266
 267 case $is_cross_compiler in
 268   no) skipdirs="${skipdirs} ${cross_only}" ;;
 269 esac
 270
 271 # If both --with-headers and --with-libs are specified, default to
 272 # --without-newlib.
 273 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
 274    && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
 275   if test x"${with_newlib}" = x ; then
 276     with_newlib=no
 277   fi
 278 fi
 279
 280 # Recognize --with-newlib/--without-newlib.
 281 case ${with_newlib} in
 282   no) skipdirs="${skipdirs} target-newlib" ;;
 283   yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
 284 esac
 285
 286 # Handle --enable-gold, --enable-ld.
 287 # --disable-gold [--enable-ld]
 288 #     Build only ld.  Default option.
 289 # --enable-gold [--enable-ld]
 290 #     Build both gold and ld.  Install gold as "ld.gold", install ld
 291 #     as "ld.bfd" and "ld".
 292 # --enable-gold=default [--enable-ld]
 293 #     Build both gold and ld.  Install gold as "ld.gold" and "ld",
 294 #     install ld as "ld.bfd".
 295 # --enable-gold[=default] --disable-ld
 296 #     Build only gold, which is then installed as both "ld.gold" and "ld".
 297 # --enable-gold --enable-ld=default
 298 #     Build both gold (installed as "ld.gold") and ld (installed as "ld"
 299 #     and ld.bfd).
 300 #     In other words, ld is default
 301 # --enable-gold=default --enable-ld=default
 302 #     Error.
 303
 304 default_ld=
 305 AC_ARG_ENABLE(gold,
 306 [AS_HELP_STRING([[--enable-gold[=ARG]]],
 307                 [build gold @<:@ARG={default,yes,no}@:>@])],
 308 ENABLE_GOLD=$enableval,
 309 ENABLE_GOLD=no)
 310 case "${ENABLE_GOLD}" in
 311   yes|default)
 312     # Check for ELF target.
 313     is_elf=no
 314     case "${target}" in
 315       *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
 316       | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
 317       | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
 318       | *-*-solaris2* | *-*-nto*)
 319         case "${target}" in
 320           *-*-linux*aout* | *-*-linux*oldld*)
 321             ;;
 322           *)
 323             is_elf=yes
 324             ;;
 325         esac
 326     esac
 327
 328     if test "$is_elf" = "yes"; then
 329       # Check for target supported by gold.
 330       case "${target}" in
 331         i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-*)
 332           configdirs="$configdirs gold"
 333           if test x${ENABLE_GOLD} = xdefault; then
 334             default_ld=gold
 335           fi
 336           ENABLE_GOLD=yes
 337           ;;
 338       esac
 339     fi
 340     ;;
 341   no)
 342     ;;
 343   *)
 344     AC_MSG_ERROR([invalid --enable-gold argument])
 345     ;;
 346 esac
 347
 348 AC_ARG_ENABLE(ld,
 349 [AS_HELP_STRING([[--enable-ld[=ARG]]],
 350                 [build ld @<:@ARG={default,yes,no}@:>@])],
 351 ENABLE_LD=$enableval,
 352 ENABLE_LD=yes)
 353
 354 case "${ENABLE_LD}" in
 355   default)
 356     if test x${default_ld} != x; then
 357       AC_MSG_ERROR([either gold or ld can be the default ld])
 358     fi
 359     ;;
 360   yes)
 361     ;;
 362   no)
 363     if test x${ENABLE_GOLD} != xyes; then
 364       AC_MSG_WARN([neither ld nor gold are enabled])
 365     fi
 366     configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
 367     ;;
 368   *)
 369     AC_MSG_ERROR([invalid --enable-ld argument])
 370     ;;
 371 esac
 372
 373 # Configure extra directories which are host specific
 374
 375 case "${host}" in
 376   *-cygwin*)
 377     configdirs="$configdirs libtermcap" ;;
 378 esac
 379
 380 # A target can indicate whether a language isn't supported for some reason.
 381 # Only spaces may be used in this macro; not newlines or tabs.
 382 unsupported_languages=
 383
 384 # Remove more programs from consideration, based on the host or
 385 # target this usually means that a port of the program doesn't
 386 # exist yet.
 387
 388 case "${host}" in
 389   i[[3456789]]86-*-msdosdjgpp*)
 390     noconfigdirs="$noconfigdirs tcl tk itcl"
 391     ;;
 392 esac
 393
 394
 395 AC_ARG_ENABLE(libquadmath,
 396 AS_HELP_STRING([--disable-libquadmath],
 397   [do not build libquadmath directory]),
 398 ENABLE_LIBQUADMATH=$enableval,
 399 ENABLE_LIBQUADMATH=yes)
 400 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
 401   noconfigdirs="$noconfigdirs target-libquadmath"
 402 fi
 403
 404
 405 AC_ARG_ENABLE(libquadmath-support,
 406 AS_HELP_STRING([--disable-libquadmath-support],
 407   [disable libquadmath support for Fortran]),
 408 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
 409 ENABLE_LIBQUADMATH_SUPPORT=yes)
 410 enable_libquadmath_support=
 411 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
 412   enable_libquadmath_support=no
 413 fi
 414
 415
 416 AC_ARG_ENABLE(libada,
 417 [AS_HELP_STRING([--enable-libada], [build libada directory])],
 418 ENABLE_LIBADA=$enableval,
 419 ENABLE_LIBADA=yes)
 420 if test "${ENABLE_LIBADA}" != "yes" ; then
 421   noconfigdirs="$noconfigdirs gnattools"
 422 fi
 423
 424 AC_ARG_ENABLE(libssp,
 425 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
 426 ENABLE_LIBSSP=$enableval,
 427 ENABLE_LIBSSP=yes)
 428
 429 # Save it here so that, even in case of --enable-libgcj, if the Java
 430 # front-end isn't enabled, we still get libgcj disabled.
 431 libgcj_saved=$libgcj
 432 case $enable_libgcj in
 433 yes)
 434   # If we reset it here, it won't get added to noconfigdirs in the
 435   # target-specific build rules, so it will be forcibly enabled
 436   # (unless the Java language itself isn't enabled).
 437   libgcj=
 438   ;;
 439 no)
 440   # Make sure we get it printed in the list of not supported target libs.
 441   # Don't disable libffi, though, other languages use it.
 442   noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
 443   # Clear libgcj_saved so that even if java is enabled libffi won't be
 444   # built.
 445   libgcj_saved=
 446   ;;
 447 esac
 448
 449 AC_ARG_ENABLE(static-libjava,
 450 [AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
 451                 [build static libjava @<:@default=no@:>@])],
 452 ENABLE_STATIC_LIBJAVA=$enableval,
 453 ENABLE_STATIC_LIBJAVA=no)
 454 enable_static_libjava=
 455 if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
 456   enable_static_libjava=yes
 457 fi
 458
 459 if test x$enable_static_libjava != xyes ; then
 460   EXTRA_CONFIGARGS_LIBJAVA=--disable-static
 461 fi
 462 AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
 463
 464 # Disable libmudflap on some systems.
 465 if test x$enable_libmudflap = x ; then
 466     case "${target}" in
 467     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux* | *-*-kopensolaris*-gnu)
 468         # Enable libmudflap by default in GNU and friends.
 469         ;;
 470     *-*-freebsd*)
 471         # Enable libmudflap by default in FreeBSD.
 472         ;;
 473     *)
 474         # Disable it by default everywhere else.
 475         noconfigdirs="$noconfigdirs target-libmudflap"
 476         ;;
 477     esac
 478 fi
 479
 480 # Disable libgomp on non POSIX hosted systems.
 481 if test x$enable_libgomp = x ; then
 482     # Enable libgomp by default on hosted POSIX systems.
 483     case "${target}" in
 484     *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 485         ;;
 486     *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
 487         ;;
 488     *-*-solaris2* | *-*-hpux11*)
 489         ;;
 490     *-*-darwin* | *-*-aix*)
 491         ;;
 492     *)
 493         noconfigdirs="$noconfigdirs target-libgomp"
 494         ;;
 495     esac
 496 fi
 497
 498 # Disable libatomic on unsupported systems.
 499 if test -d ${srcdir}/libatomic; then
 500     if test x$enable_libatomic = x; then
 501         AC_MSG_CHECKING([for libatomic support])
 502         if (srcdir=${srcdir}/libatomic; \
 503                 . ${srcdir}/configure.tgt; \
 504                 test -n "$UNSUPPORTED")
 505         then
 506             AC_MSG_RESULT([no])
 507             noconfigdirs="$noconfigdirs target-libatomic"
 508         else
 509             AC_MSG_RESULT([yes])
 510         fi
 511     fi
 512 fi
 513
 514 # Disable libitm on unsupported systems.
 515 if test -d ${srcdir}/libitm; then
 516     if test x$enable_libitm = x; then
 517         AC_MSG_CHECKING([for libitm support])
 518         if (srcdir=${srcdir}/libitm; \
 519                 . ${srcdir}/configure.tgt; \
 520                 test -n "$UNSUPPORTED")
 521         then
 522             AC_MSG_RESULT([no])
 523             noconfigdirs="$noconfigdirs target-libitm"
 524         else
 525             AC_MSG_RESULT([yes])
 526         fi
 527     fi
 528 fi
 529
 530 # Disable libssp for some systems.
 531 case "${target}" in
 532   avr-*-*)
 533     # No hosted I/O support.
 534     noconfigdirs="$noconfigdirs target-libssp"
 535     ;;
 536   powerpc-*-aix* | rs6000-*-aix*)
 537     noconfigdirs="$noconfigdirs target-libssp"
 538     ;;
 539   rl78-*-*)
 540     # libssp uses a misaligned load to trigger a fault, but the RL78
 541     # doesn't fault for those - instead, it gives a build-time error
 542     # for explicit misaligned loads.
 543     noconfigdirs="$noconfigdirs target-libssp"
 544     ;;
 545 esac
 546
 547 # Disable libstdc++-v3 for some systems.
 548 case "${target}" in
 549   *-*-vxworks*)
 550     # VxWorks uses the Dinkumware C++ library.
 551     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 552     ;;
 553   arm*-wince-pe*)
 554     # the C++ libraries don't build on top of CE's C libraries
 555     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 556     ;;
 557   avr-*-*)
 558     noconfigdirs="$noconfigdirs target-libstdc++-v3"
 559     ;;
 560 esac
 561
 562 # Disable Fortran for some systems.
 563 case "${target}" in
 564   mmix-*-*)
 565     # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
 566     unsupported_languages="$unsupported_languages fortran"
 567     ;;
 568 esac
 569
 570 # Disable Java if libffi is not supported.
 571 case "${target}" in
 572   alpha*-*-*)
 573     ;;
 574   arm*-*-*)
 575     ;;
 576   cris-*-*)
 577     ;;
 578   frv-*-*)
 579     ;;
 580   hppa*-*-linux*)
 581     ;;
 582   hppa*-*-hpux*)
 583     ;;
 584   i?86-*-*)
 585     ;;
 586   ia64*-*-*)
 587     ;;
 588   m32r*-*-*)
 589     ;;
 590   m68k-*-*)
 591     ;;
 592   mips*-*-rtems*)
 593     ;;
 594   mips*-*-linux*)
 595     ;;
 596   powerpc*-*-linux*)
 597     ;;
 598   powerpc-*-darwin*)
 599     ;;
 600   powerpc-*-aix* | rs6000-*-aix*)
 601     ;;
 602   powerpc-*-freebsd*)
 603     ;;
 604   powerpc64-*-freebsd*)
 605     ;;
 606   powerpc*-*-rtems*)
 607     ;;
 608   s390-*-* | s390x-*-*)
 609     ;;
 610   sh-*-* | sh[[34]]*-*-*)
 611     ;;
 612   sh64-*-* | sh5*-*-*)
 613     ;;
 614   sparc*-*-*)
 615     ;;
 616   x86_64-*-*)
 617     ;;
 618   *-*-*)
 619     unsupported_languages="$unsupported_languages java"
 620     ;;
 621 esac
 622
 623 # Disable Java, libgcj or related libraries for some systems.
 624 case "${target}" in
 625   powerpc-*-darwin*)
 626     ;;
 627   i[[3456789]]86-*-darwin*)
 628     ;;
 629   x86_64-*-darwin[[912]]*)
 630     ;;
 631   *-*-darwin*)
 632     noconfigdirs="$noconfigdirs ${libgcj}"
 633     ;;
 634   *-*-netware*)
 635     noconfigdirs="$noconfigdirs ${libgcj}"
 636     ;;
 637   *-*-rtems*)
 638     noconfigdirs="$noconfigdirs ${libgcj}"
 639     ;;
 640   *-*-tpf*)
 641     noconfigdirs="$noconfigdirs ${libgcj}"
 642     ;;
 643   *-*-uclinux*)
 644     noconfigdirs="$noconfigdirs ${libgcj}"
 645     ;;
 646   *-*-vxworks*)
 647     noconfigdirs="$noconfigdirs ${libgcj}"
 648     ;;
 649   alpha*-*-*vms*)
 650     noconfigdirs="$noconfigdirs ${libgcj}"
 651     ;;
 652   arm-wince-pe)
 653     noconfigdirs="$noconfigdirs ${libgcj}"
 654     ;;
 655   arm*-*-symbianelf*)
 656     noconfigdirs="$noconfigdirs ${libgcj}"
 657     ;;
 658   bfin-*-*)
 659     noconfigdirs="$noconfigdirs target-boehm-gc"
 660     ;;
 661   cris-*-* | crisv32-*-*)
 662     unsupported_languages="$unsupported_languages java"
 663     case "${target}" in
 664       *-*-linux*)
 665         ;;
 666       *) # See PR46792 regarding target-libffi.
 667         noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
 668     esac
 669     ;;
 670   hppa*64*-*-linux*)
 671     # In this case, it's because the hppa64-linux target is for
 672     # the kernel only at this point and has no libc, and thus no
 673     # headers, crt*.o, etc., all of which are needed by these.
 674     unsupported_languages="$unsupported_languages java"
 675     ;;
 676   hppa*64*-*-hpux*)
 677     noconfigdirs="$noconfigdirs ${libgcj}"
 678     ;;
 679   hppa*-hp-hpux11*)
 680     ;;
 681   hppa*-*-hpux*)
 682     # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
 683     # build on HP-UX 10.20.
 684     noconfigdirs="$noconfigdirs ${libgcj}"
 685     ;;
 686   ia64*-*-*vms*)
 687     noconfigdirs="$noconfigdirs ${libgcj}"
 688     ;;
 689   i[[3456789]]86-w64-mingw*)
 690     noconfigdirs="$noconfigdirs ${libgcj}"
 691     ;;
 692   i[[3456789]]86-*-mingw*)
 693     noconfigdirs="$noconfigdirs ${libgcj}"
 694     ;;
 695   x86_64-*-mingw*)
 696     noconfigdirs="$noconfigdirs ${libgcj}"
 697     ;;
 698   mmix-*-*)
 699     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
 700     ;;
 701   powerpc-*-aix*)
 702     # copied from rs6000-*-* entry
 703     noconfigdirs="$noconfigdirs ${libgcj}"
 704     ;;
 705   rs6000-*-aix*)
 706     noconfigdirs="$noconfigdirs ${libgcj}"
 707     ;;
 708   *-*-lynxos*)
 709     noconfigdirs="$noconfigdirs ${libgcj}"
 710     ;;
 711 esac
 712
 713 # Default libgloss CPU subdirectory.
 714 libgloss_dir="$target_cpu"
 715
 716 case "${target}" in
 717   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 718     libgloss_dir=wince
 719     ;;
 720   arm*-*-*)
 721     libgloss_dir=arm
 722     ;;
 723   cris-*-* | crisv32-*-*)
 724     libgloss_dir=cris
 725     ;;
 726   hppa*-*-*)
 727     libgloss_dir=pa
 728     ;;
 729   i[[3456789]]86-*-*)
 730     libgloss_dir=i386
 731     ;;
 732   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 733     libgloss_dir=m68hc11
 734     ;;
 735   m68*-*-* | fido-*-*)
 736     libgloss_dir=m68k
 737     ;;
 738   mips*-*-*)
 739     libgloss_dir=mips
 740     ;;
 741   powerpc*-*-*)
 742     libgloss_dir=rs6000
 743     ;;
 744   sparc*-*-*)
 745     libgloss_dir=sparc
 746     ;;
 747 esac
 748
 749 # Disable newlib and libgloss for various target OSes.
 750 case "${target}" in
 751   alpha*-dec-osf*)
 752     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 753     ;;
 754   i[[3456789]]86-*-linux*)
 755     # This section makes it possible to build newlib natively on linux.
 756     # If we are using a cross compiler then don't configure newlib.
 757     if test x${is_cross_compiler} != xno ; then
 758       noconfigdirs="$noconfigdirs target-newlib"
 759     fi
 760     noconfigdirs="$noconfigdirs target-libgloss"
 761     # If we are not using a cross compiler, do configure newlib.
 762     # Note however, that newlib will only be configured in this situation
 763     # if the --with-newlib option has been given, because otherwise
 764     # 'target-newlib' will appear in skipdirs.
 765     ;;
 766   i[[3456789]]86-*-rdos*)
 767     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 768     ;;
 769   sh*-*-pe|mips*-*-pe|arm-wince-pe)
 770     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 771     ;;
 772   sparc-*-sunos4*)
 773     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 774     ;;
 775   *-*-aix*)
 776     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 777     ;;
 778   *-*-beos*)
 779     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 780     ;;
 781   *-*-chorusos)
 782     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 783     ;;
 784   *-*-dragonfly*)
 785     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 786     ;;
 787   *-*-freebsd*)
 788     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 789     ;;
 790   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 791     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 792     ;;
 793   *-*-lynxos*)
 794     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 795     ;;
 796   *-*-mingw*)
 797     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 798     ;;
 799   *-*-netbsd*)
 800     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 801     ;;
 802   *-*-netware*)
 803     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 804     ;;
 805   *-*-tpf*)
 806     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 807     ;;
 808   *-*-uclinux*)
 809     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 810     ;;
 811   *-*-vxworks*)
 812     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 813     ;;
 814 esac
 815
 816 case "${target}" in
 817   *-*-chorusos)
 818     ;;
 819   powerpc-*-darwin*)
 820     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 821     noconfigdirs="$noconfigdirs sim target-rda"
 822     ;;
 823   i[[3456789]]86-*-darwin*)
 824     noconfigdirs="$noconfigdirs ld gprof"
 825     noconfigdirs="$noconfigdirs sim target-rda"
 826     ;;
 827   x86_64-*-darwin[[912]]*)
 828     noconfigdirs="$noconfigdirs ld gas gprof"
 829     noconfigdirs="$noconfigdirs sim target-rda"
 830     ;;
 831   *-*-darwin*)
 832     noconfigdirs="$noconfigdirs ld gas gdb gprof"
 833     noconfigdirs="$noconfigdirs sim target-rda"
 834     ;;
 835   *-*-dragonfly*)
 836     ;;
 837   *-*-freebsd*)
 838     if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
 839         && test -f /usr/local/include/gmp.h; then
 840       with_gmp=/usr/local
 841     fi
 842     ;;
 843   *-*-kaos*)
 844     # Remove unsupported stuff on all kaOS configurations.
 845     noconfigdirs="$noconfigdirs target-libgloss"
 846     ;;
 847   *-*-netbsd*)
 848     ;;
 849   *-*-netware*)
 850     ;;
 851   *-*-rtems*)
 852     noconfigdirs="$noconfigdirs target-libgloss"
 853     ;;
 854     # The tpf target doesn't support gdb yet.
 855   *-*-tpf*)
 856     noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
 857     ;;
 858   *-*-uclinux*)
 859     noconfigdirs="$noconfigdirs target-rda"
 860     ;;
 861   *-*-vxworks*)
 862     ;;
 863   alpha*-dec-osf*)
 864     # ld works, but does not support shared libraries.
 865     # gas doesn't generate exception information.
 866     noconfigdirs="$noconfigdirs gas ld"
 867     ;;
 868   alpha*-*-*vms*)
 869     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
 870     ;;
 871   alpha*-*-*)
 872     # newlib is not 64 bit ready
 873     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
 874     ;;
 875   sh*-*-pe|mips*-*-pe|*arm-wince-pe)
 876     noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
 877     ;;
 878   arc-*-*)
 879     noconfigdirs="$noconfigdirs target-libgloss"
 880     ;;
 881   arm-*-pe*)
 882     noconfigdirs="$noconfigdirs target-libgloss"
 883     ;;
 884   arm-*-riscix*)
 885     noconfigdirs="$noconfigdirs ld target-libgloss"
 886     ;;
 887   c4x-*-* | tic4x-*-*)
 888     noconfigdirs="$noconfigdirs target-libgloss"
 889     ;;
 890   tic54x-*-*)
 891     noconfigdirs="$noconfigdirs target-libgloss gdb"
 892     ;;
 893   d10v-*-*)
 894     noconfigdirs="$noconfigdirs target-libgloss"
 895     ;;
 896   d30v-*-*)
 897     noconfigdirs="$noconfigdirs gdb"
 898     ;;
 899   fr30-*-elf*)
 900     noconfigdirs="$noconfigdirs gdb"
 901     ;;
 902   moxie-*-*)
 903     noconfigdirs="$noconfigdirs gprof"
 904     ;;
 905   h8300*-*-*)
 906     noconfigdirs="$noconfigdirs target-libgloss"
 907     ;;
 908   h8500-*-*)
 909     noconfigdirs="$noconfigdirs target-libgloss"
 910     ;;
 911   hppa1.1-*-osf* | hppa1.1-*-bsd* )
 912     ;;
 913   hppa*64*-*-linux*)
 914     ;;
 915   hppa*-*-linux*)
 916     ;;
 917   hppa*-*-*elf* | \
 918   hppa*-*-lites* | \
 919   hppa*-*-openbsd* | \
 920   hppa*64*-*-*)
 921     ;;
 922   hppa*-hp-hpux11*)
 923     noconfigdirs="$noconfigdirs ld"
 924     ;;
 925   hppa*-*-pro*)
 926     ;;
 927   hppa*-*-*)
 928     noconfigdirs="$noconfigdirs ld"
 929     ;;
 930   i960-*-*)
 931     noconfigdirs="$noconfigdirs gdb"
 932     ;;
 933   ia64*-*-elf*)
 934     # No gdb support yet.
 935     noconfigdirs="$noconfigdirs readline libgui itcl gdb"
 936     ;;
 937   ia64*-**-hpux*)
 938     # No ld support yet.
 939     noconfigdirs="$noconfigdirs libgui itcl ld"
 940     ;;
 941   ia64*-*-*vms*)
 942     # No ld support yet.
 943     noconfigdirs="$noconfigdirs libgui itcl ld"
 944     ;;
 945   i[[3456789]]86-w64-mingw*)
 946     ;;
 947   i[[3456789]]86-*-mingw*)
 948     target_configdirs="$target_configdirs target-winsup"
 949     ;;
 950   *-*-cygwin*)
 951     target_configdirs="$target_configdirs target-libtermcap target-winsup"
 952     noconfigdirs="$noconfigdirs target-libgloss"
 953     # always build newlib if winsup directory is present.
 954     if test -d "$srcdir/winsup/cygwin"; then
 955       skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 956     elif test -d "$srcdir/newlib"; then
 957       echo "Warning: winsup/cygwin is missing so newlib can't be built."
 958     fi
 959     ;;
 960   i[[3456789]]86-*-pe)
 961     noconfigdirs="$noconfigdirs target-libgloss"
 962     ;;
 963   i[[3456789]]86-*-sco3.2v5*)
 964     # The linker does not yet know about weak symbols in COFF,
 965     # and is not configured to handle mixed ELF and COFF.
 966     noconfigdirs="$noconfigdirs ld target-libgloss"
 967     ;;
 968   i[[3456789]]86-*-sco*)
 969     noconfigdirs="$noconfigdirs gprof target-libgloss"
 970     ;;
 971   i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
 972     noconfigdirs="$noconfigdirs target-libgloss"
 973     ;;
 974   i[[3456789]]86-*-sysv4*)
 975     noconfigdirs="$noconfigdirs target-libgloss"
 976     ;;
 977   i[[3456789]]86-*-beos*)
 978     noconfigdirs="$noconfigdirs gdb"
 979     ;;
 980   i[[3456789]]86-*-rdos*)
 981     noconfigdirs="$noconfigdirs gdb"
 982     ;;
 983   mmix-*-*)
 984     noconfigdirs="$noconfigdirs gdb"
 985     ;;
 986   mt-*-*)
 987     noconfigdirs="$noconfigdirs sim"
 988     ;;
 989   powerpc-*-aix*)
 990     # copied from rs6000-*-* entry
 991     noconfigdirs="$noconfigdirs gprof"
 992     ;;
 993   powerpc*-*-winnt* | powerpc*-*-pe*)
 994     target_configdirs="$target_configdirs target-winsup"
 995     noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
 996     # always build newlib.
 997     skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
 998     ;;
 999     # This is temporary until we can link against shared libraries
1000   powerpcle-*-solaris*)
1001     noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1002     ;;
1003   powerpc-*-beos*)
1004     noconfigdirs="$noconfigdirs gdb"
1005     ;;
1006   rs6000-*-lynxos*)
1007     noconfigdirs="$noconfigdirs gprof"
1008     ;;
1009   rs6000-*-aix*)
1010     noconfigdirs="$noconfigdirs gprof"
1011     ;;
1012   rs6000-*-*)
1013     noconfigdirs="$noconfigdirs gprof"
1014     ;;
1015   m68k-apollo-*)
1016     noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1017     ;;
1018   microblaze*)
1019     noconfigdirs="$noconfigdirs gprof"
1020     ;;
1021   mips*-sde-elf*)
1022     if test x$with_newlib = xyes; then
1023       noconfigdirs="$noconfigdirs gprof"
1024     fi
1025     ;;
1026   mips*-*-irix5*)
1027     noconfigdirs="$noconfigdirs gprof target-libgloss"
1028     ;;
1029   mips*-*-irix6*)
1030     noconfigdirs="$noconfigdirs gprof target-libgloss"
1031     ;;
1032   mips*-*-bsd*)
1033     noconfigdirs="$noconfigdirs gprof target-libgloss"
1034     ;;
1035   mips*-*-linux*)
1036     ;;
1037   mips*-*-*)
1038     noconfigdirs="$noconfigdirs gprof"
1039     ;;
1040   sh-*-* | sh64-*-*)
1041     case "${target}" in
1042       sh*-*-elf)
1043          ;;
1044       *)
1045          noconfigdirs="$noconfigdirs target-libgloss" ;;
1046     esac
1047     ;;
1048   sparc-*-sunos4*)
1049     if test x${is_cross_compiler} = xno ; then
1050            use_gnu_ld=no
1051     fi
1052     ;;
1053   tic6x-*-*)
1054     noconfigdirs="$noconfigdirs sim"
1055     ;;
1056   tilepro-*-* | tilegx-*-*)
1057     noconfigdirs="$noconfigdirs sim"
1058     ;;
1059   v810-*-*)
1060     noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1061     ;;
1062   vax-*-*)
1063     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1064     ;;
1065 esac
1066
1067 # If we aren't building newlib, then don't build libgloss, since libgloss
1068 # depends upon some newlib header files.
1069 case "${noconfigdirs}" in
1070   *target-libgloss*) ;;
1071   *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1072 esac
1073
1074 # Work in distributions that contain no compiler tools, like Autoconf.
1075 host_makefile_frag=/dev/null
1076 if test -d ${srcdir}/config ; then
1077 case "${host}" in
1078   i[[3456789]]86-*-msdosdjgpp*)
1079     host_makefile_frag="config/mh-djgpp"
1080     ;;
1081   *-cygwin*)
1082     ACX_CHECK_CYGWIN_CAT_WORKS
1083     host_makefile_frag="config/mh-cygwin"
1084     ;;
1085   *-mingw*)
1086     host_makefile_frag="config/mh-mingw"
1087     ;;
1088   hppa*-hp-hpux10*)
1089     host_makefile_frag="config/mh-pa-hpux10"
1090     ;;
1091   hppa*-hp-hpux*)
1092     host_makefile_frag="config/mh-pa"
1093     ;;
1094   hppa*-*)
1095     host_makefile_frag="config/mh-pa"
1096     ;;
1097   *-*-darwin*)
1098     host_makefile_frag="config/mh-darwin"
1099     ;;
1100   powerpc-*-aix*)
1101     host_makefile_frag="config/mh-ppc-aix"
1102     ;;
1103   rs6000-*-aix*)
1104     host_makefile_frag="config/mh-ppc-aix"
1105     ;;
1106 esac
1107 fi
1108
1109 if test "${build}" != "${host}" ; then
1110   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1111   AS_FOR_BUILD=${AS_FOR_BUILD-as}
1112   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1113   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1114   GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1115   GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1116   GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1117   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1118   LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1119   NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1120   RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1121   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1122   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1123 else
1124   AR_FOR_BUILD="\$(AR)"
1125   AS_FOR_BUILD="\$(AS)"
1126   CC_FOR_BUILD="\$(CC)"
1127   CXX_FOR_BUILD="\$(CXX)"
1128   GCJ_FOR_BUILD="\$(GCJ)"
1129   GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1130   GOC_FOR_BUILD="\$(GOC)"
1131   DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1132   LD_FOR_BUILD="\$(LD)"
1133   NM_FOR_BUILD="\$(NM)"
1134   RANLIB_FOR_BUILD="\$(RANLIB)"
1135   WINDRES_FOR_BUILD="\$(WINDRES)"
1136   WINDMC_FOR_BUILD="\$(WINDMC)"
1137 fi
1138
1139 AC_PROG_CC
1140 AC_PROG_CXX
1141
1142 # We must set the default linker to the linker used by gcc for the correct
1143 # operation of libtool.  If LD is not defined and we are using gcc, try to
1144 # set the LD default to the ld used by gcc.
1145 if test -z "$LD"; then
1146   if test "$GCC" = yes; then
1147     case $build in
1148     *-*-mingw*)
1149       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1150     *)
1151       gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1152     esac
1153     case $gcc_prog_ld in
1154     # Accept absolute paths.
1155     [[\\/]* | [A-Za-z]:[\\/]*)]
1156       LD="$gcc_prog_ld" ;;
1157     esac
1158   fi
1159 fi
1160
1161 ACX_PROG_GNAT
1162 ACX_PROG_CMP_IGNORE_INITIAL
1163
1164 AC_ARG_ENABLE([bootstrap],
1165 [AS_HELP_STRING([--enable-bootstrap],
1166                 [enable bootstrapping @<:@yes if native build@:>@])],,
1167 enable_bootstrap=default)
1168
1169 # Issue errors and warnings for invalid/strange bootstrap combinations.
1170 if test -r $srcdir/gcc/configure; then
1171   have_compiler=yes
1172 else
1173   have_compiler=no
1174 fi
1175
1176 case "$have_compiler:$host:$target:$enable_bootstrap" in
1177   *:*:*:no) ;;
1178
1179   # Default behavior.  Enable bootstrap if we have a compiler
1180   # and we are in a native configuration.
1181   yes:$build:$build:default)
1182     enable_bootstrap=yes ;;
1183
1184   *:*:*:default)
1185     enable_bootstrap=no ;;
1186
1187   # We have a compiler and we are in a native configuration, bootstrap is ok
1188   yes:$build:$build:yes)
1189     ;;
1190
1191   # Other configurations, but we have a compiler.  Assume the user knows
1192   # what he's doing.
1193   yes:*:*:yes)
1194     AC_MSG_WARN([trying to bootstrap a cross compiler])
1195     ;;
1196
1197   # No compiler: if they passed --enable-bootstrap explicitly, fail
1198   no:*:*:yes)
1199     AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1200
1201   # Fail if wrong command line
1202   *)
1203     AC_MSG_ERROR([invalid option for --enable-bootstrap])
1204     ;;
1205 esac
1206
1207 # Used for setting $lt_cv_objdir
1208 _LT_CHECK_OBJDIR
1209
1210 # Check for GMP, MPFR and MPC
1211 gmplibs="-lmpc -lmpfr -lgmp"
1212 gmpinc=
1213 have_gmp=no
1214
1215 # Specify a location for mpc
1216 # check for this first so it ends up on the link line before mpfr.
1217 AC_ARG_WITH(mpc,
1218 [AS_HELP_STRING([--with-mpc=PATH],
1219                 [specify prefix directory for installed MPC package.
1220                  Equivalent to --with-mpc-include=PATH/include
1221                  plus --with-mpc-lib=PATH/lib])])
1222 AC_ARG_WITH(mpc-include,
1223 [AS_HELP_STRING([--with-mpc-include=PATH],
1224                 [specify directory for installed MPC include files])])
1225 AC_ARG_WITH(mpc-lib,
1226 [AS_HELP_STRING([--with-mpc-lib=PATH],
1227                 [specify directory for the installed MPC library])])
1228
1229 if test "x$with_mpc" != x; then
1230   gmplibs="-L$with_mpc/lib $gmplibs"
1231   gmpinc="-I$with_mpc/include $gmpinc"
1232 fi
1233 if test "x$with_mpc_include" != x; then
1234   gmpinc="-I$with_mpc_include $gmpinc"
1235 fi
1236 if test "x$with_mpc_lib" != x; then
1237   gmplibs="-L$with_mpc_lib $gmplibs"
1238 fi
1239 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1240   gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1241   gmpinc='-I$$s/mpc/src '"$gmpinc"
1242   # Do not test the mpc version.  Assume that it is sufficient, since
1243   # it is in the source tree, and the library has not been built yet
1244   # but it would be included on the link line in the version check below
1245   # hence making the test fail.
1246   have_gmp=yes
1247 fi
1248
1249 # Specify a location for mpfr
1250 # check for this first so it ends up on the link line before gmp.
1251 AC_ARG_WITH(mpfr-dir,
1252 [AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1253 [AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1254 Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1255
1256 AC_ARG_WITH(mpfr,
1257 [AS_HELP_STRING([--with-mpfr=PATH],
1258                 [specify prefix directory for installed MPFR package.
1259                  Equivalent to --with-mpfr-include=PATH/include
1260                  plus --with-mpfr-lib=PATH/lib])])
1261 AC_ARG_WITH(mpfr-include,
1262 [AS_HELP_STRING([--with-mpfr-include=PATH],
1263                 [specify directory for installed MPFR include files])])
1264 AC_ARG_WITH(mpfr-lib,
1265 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1266                 [specify directory for the installed MPFR library])])
1267
1268 if test "x$with_mpfr" != x; then
1269   gmplibs="-L$with_mpfr/lib $gmplibs"
1270   gmpinc="-I$with_mpfr/include $gmpinc"
1271 fi
1272 if test "x$with_mpfr_include" != x; then
1273   gmpinc="-I$with_mpfr_include $gmpinc"
1274 fi
1275 if test "x$with_mpfr_lib" != x; then
1276   gmplibs="-L$with_mpfr_lib $gmplibs"
1277 fi
1278 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1279   # MPFR v3.1.0 moved the sources into a src sub-directory.
1280   if test -d ${srcdir}/mpfr/src; then
1281     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1282     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1283     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1284   else
1285     gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir $gmplibs"
1286     gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr -I$$s/mpfr '"$gmpinc"
1287     extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/'"$lt_cv_objdir"
1288   fi
1289   # Do not test the mpfr version.  Assume that it is sufficient, since
1290   # it is in the source tree, and the library has not been built yet
1291   # but it would be included on the link line in the version check below
1292   # hence making the test fail.
1293   have_gmp=yes
1294 fi
1295
1296 # Specify a location for gmp
1297 AC_ARG_WITH(gmp-dir,
1298 [AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1299 [AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1300 Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1301
1302 AC_ARG_WITH(gmp,
1303 [AS_HELP_STRING([--with-gmp=PATH],
1304                 [specify prefix directory for the installed GMP package.
1305                  Equivalent to --with-gmp-include=PATH/include
1306                  plus --with-gmp-lib=PATH/lib])])
1307 AC_ARG_WITH(gmp-include,
1308 [AS_HELP_STRING([--with-gmp-include=PATH],
1309                 [specify directory for installed GMP include files])])
1310 AC_ARG_WITH(gmp-lib,
1311 [AS_HELP_STRING([--with-gmp-lib=PATH],
1312                 [specify directory for the installed GMP library])])
1313
1314
1315 if test "x$with_gmp" != x; then
1316   gmplibs="-L$with_gmp/lib $gmplibs"
1317   gmpinc="-I$with_gmp/include $gmpinc"
1318 fi
1319 if test "x$with_gmp_include" != x; then
1320   gmpinc="-I$with_gmp_include $gmpinc"
1321 fi
1322 if test "x$with_gmp_lib" != x; then
1323   gmplibs="-L$with_gmp_lib $gmplibs"
1324 fi
1325 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1326   gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1327   gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1328   extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1329   extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1330   extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1331   # Do not test the gmp version.  Assume that it is sufficient, since
1332   # it is in the source tree, and the library has not been built yet
1333   # but it would be included on the link line in the version check below
1334   # hence making the test fail.
1335   have_gmp=yes
1336 fi
1337
1338 if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1339   have_gmp=yes
1340   saved_CFLAGS="$CFLAGS"
1341   CFLAGS="$CFLAGS $gmpinc"
1342   # Check for the recommended and required versions of GMP.
1343   AC_MSG_CHECKING([for the correct version of gmp.h])
1344   AC_TRY_COMPILE([#include "gmp.h"],[
1345   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1346   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1347   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,0)
1348   choke me
1349   #endif
1350   ], [AC_TRY_COMPILE([#include <gmp.h>],[
1351   #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1352   #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1353   #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1354   choke me
1355   #endif
1356   ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1357    [AC_MSG_RESULT([no]); have_gmp=no])
1358
1359   # If we have GMP, check the MPFR version.
1360   if test x"$have_gmp" = xyes; then
1361     # Check for the recommended and required versions of MPFR.
1362     AC_MSG_CHECKING([for the correct version of mpfr.h])
1363     AC_TRY_COMPILE([#include <gmp.h>
1364     #include <mpfr.h>],[
1365     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1366     choke me
1367     #endif
1368     ], [AC_TRY_COMPILE([#include <gmp.h>
1369     #include <mpfr.h>],[
1370     #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1371     choke me
1372     #endif
1373     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1374      [AC_MSG_RESULT([no]); have_gmp=no])
1375   fi
1376
1377   # Check for the MPC header version.
1378   if test x"$have_gmp" = xyes ; then
1379     # Check for the recommended and required versions of MPC.
1380     AC_MSG_CHECKING([for the correct version of mpc.h])
1381     AC_TRY_COMPILE([#include <mpc.h>],[
1382     #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1383     choke me
1384     #endif
1385     ], [AC_TRY_COMPILE([#include <mpc.h>],[
1386     #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1387     choke me
1388     #endif
1389     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1390      [AC_MSG_RESULT([no]); have_gmp=no])
1391   fi
1392
1393   # Now check the MPFR library.
1394   if test x"$have_gmp" = xyes; then
1395     saved_LIBS="$LIBS"
1396     LIBS="$LIBS $gmplibs"
1397     AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1398     AC_TRY_LINK([#include <mpc.h>],[
1399     mpfr_t n;
1400     mpfr_t x;
1401     mpc_t c;
1402     int t;
1403     mpfr_init (n);
1404     mpfr_init (x);
1405     mpfr_atan2 (n, n, x, GMP_RNDN);
1406     mpfr_erfc (n, x, GMP_RNDN);
1407     mpfr_subnormalize (x, t, GMP_RNDN);
1408     mpfr_clear(n);
1409     mpfr_clear(x);
1410     mpc_init2 (c, 53);
1411     mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1412     mpc_cosh (c, c, MPC_RNDNN);
1413     mpc_pow (c, c, c, MPC_RNDNN);
1414     mpc_acosh (c, c, MPC_RNDNN);
1415     mpc_clear (c);
1416     ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1417     LIBS="$saved_LIBS"
1418   fi
1419
1420   CFLAGS="$saved_CFLAGS"
1421
1422 # The library versions listed in the error message below should match
1423 # the HARD-minimums enforced above.
1424   if test x$have_gmp != xyes; then
1425     AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1426 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1427 their locations.  Source code for these libraries can be found at
1428 their respective hosting sites as well as at
1429 ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1430 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1431 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1432 make sure that you have installed both the libraries and the header
1433 files.  They may be located in separate packages.])
1434   fi
1435 fi
1436
1437 # Flags needed for both GMP, MPFR and/or MPC.
1438 AC_SUBST(gmplibs)
1439 AC_SUBST(gmpinc)
1440 AC_SUBST(extra_mpfr_configure_flags)
1441 AC_SUBST(extra_mpc_gmp_configure_flags)
1442 AC_SUBST(extra_mpc_mpfr_configure_flags)
1443 AC_SUBST(extra_isl_gmp_configure_flags)
1444
1445 # Allow host libstdc++ to be specified for static linking with PPL.
1446 AC_ARG_WITH(host-libstdcxx,
1447 [AS_HELP_STRING([--with-host-libstdcxx=L],
1448                 [use linker arguments L to link with libstdc++
1449                  when linking with PPL])])
1450
1451 case $with_host_libstdcxx in
1452   no|yes)
1453     AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
1454     ;;
1455 esac
1456
1457 # Linker flags to use for stage1 or when not boostrapping.
1458 AC_ARG_WITH(stage1-ldflags,
1459 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1460 [if test "$withval" = "no" -o "$withval" = "yes"; then
1461    stage1_ldflags=
1462  else
1463    stage1_ldflags=$withval
1464  fi],
1465 [stage1_ldflags=])
1466 AC_SUBST(stage1_ldflags)
1467
1468 # Libraries to use for stage1 or when not bootstrapping.
1469 AC_ARG_WITH(stage1-libs,
1470 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1471 [if test "$withval" = "no" -o "$withval" = "yes"; then
1472    stage1_libs=
1473  else
1474    stage1_libs=$withval
1475  fi],
1476 [stage1_libs=$with_host_libstdcxx])
1477 AC_SUBST(stage1_libs)
1478
1479 # Libraries to use for stage2 and later builds.  This defaults to the
1480 # argument passed to --with-host-libstdcxx.
1481 AC_ARG_WITH(boot-libs,
1482 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1483 [if test "$withval" = "no" -o "$withval" = "yes"; then
1484    poststage1_libs=
1485  else
1486    poststage1_libs=$withval
1487  fi],
1488 [poststage1_libs=$with_host_libstdcxx])
1489 AC_SUBST(poststage1_libs)
1490
1491 # Linker flags to use for stage2 and later builds.
1492 AC_ARG_WITH(boot-ldflags,
1493 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1494                 [linker flags for stage2 and later])],
1495 [if test "$withval" = "no" -o "$withval" = "yes"; then
1496    poststage1_ldflags=
1497  else
1498    poststage1_ldflags=$withval
1499  fi],
1500 [poststage1_ldflags=
1501  # In stages 2 and 3, default to linking libstdc++ and libgcc
1502  # statically.  But if the user explicitly specified the libraries to
1503  # use, trust that they are doing what they want.
1504  if test "$poststage1_libs" = ""; then
1505    poststage1_ldflags="-static-libstdc++ -static-libgcc"
1506  fi])
1507 AC_SUBST(poststage1_ldflags)
1508
1509 # Check for ISL
1510 dnl Provide configure switches and initialize islinc & isllibs
1511 dnl with user input.
1512 ISL_INIT_FLAGS
1513 if test "x$with_isl" != "xno"; then
1514   dnl The minimal version of ISL required for Graphite.
1515   ISL_CHECK_VERSION(0,10)
1516
1517   dnl Only execute fail-action, if ISL has been requested.
1518   ISL_IF_FAILED([
1519     AC_MSG_ERROR([Unable to find a usable ISL.  See config.log for details.])])
1520 fi
1521
1522 # Check for CLOOG
1523 dnl Provide configure switches and initialize clooginc & clooglibs
1524 dnl with user input.
1525 CLOOG_INIT_FLAGS
1526 if test "x$isllibs" = x && test "x$islinc" = x; then
1527   clooglibs=
1528   clooginc=
1529 elif test "x$with_cloog" != "xno"; then
1530   dnl The minimal version of CLooG required for Graphite.
1531   dnl
1532   dnl If we use CLooG-Legacy, the provided version information is
1533   dnl ignored.
1534   CLOOG_CHECK_VERSION(0,17,0)
1535
1536   dnl Only execute fail-action, if CLooG has been requested.
1537   CLOOG_IF_FAILED([
1538     AC_MSG_ERROR([Unable to find a usable CLooG.  See config.log for details.])])
1539 fi
1540
1541 # If either the ISL or the CLooG check failed, disable builds of in-tree
1542 # variants of both
1543 if test "x$clooglibs" = x && test "x$clooginc" = x; then
1544   noconfigdirs="$noconfigdirs cloog isl"
1545 fi
1546
1547 # Check for LTO support.
1548 AC_ARG_ENABLE(lto,
1549 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1550 enable_lto=$enableval,
1551 enable_lto=yes; default_enable_lto=yes)
1552
1553 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1554   build_lto_plugin=yes
1555 ],[if test x"$default_enable_lto" = x"yes" ; then
1556     case $target in
1557       *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
1558       # On other non-ELF platforms, LTO has yet to be validated.
1559       *) enable_lto=no ;;
1560     esac
1561   else
1562   # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1563   # It would also be nice to check the binutils support, but we don't
1564   # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1565   # warn during gcc/ subconfigure; unless you're bootstrapping with
1566   # -flto it won't be needed until after installation anyway.
1567     case $target in
1568       *-cygwin* | *-mingw* | *-apple-darwin*) ;;
1569       *) if test x"$enable_lto" = x"yes"; then
1570         AC_MSG_ERROR([LTO support is not enabled for this target.])
1571         fi
1572       ;;
1573     esac
1574   fi
1575   # Among non-ELF, only Windows platforms support the lto-plugin so far.
1576   # Build it unless LTO was explicitly disabled.
1577   case $target in
1578     *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1579     *) ;;
1580   esac
1581 ])
1582
1583
1584 # By default, C and C++ are the only stage 1 languages.
1585 stage1_languages=,c,
1586
1587 # Target libraries that we bootstrap.
1588 bootstrap_target_libs=,target-libgcc,
1589
1590 # Figure out what language subdirectories are present.
1591 # Look if the user specified --enable-languages="..."; if not, use
1592 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1593 # go away some day.
1594 # NB:  embedded tabs in this IF block -- do not untabify
1595 if test -d ${srcdir}/gcc; then
1596   if test x"${enable_languages+set}" != xset; then
1597     if test x"${LANGUAGES+set}" = xset; then
1598       enable_languages="${LANGUAGES}"
1599         echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1600     else
1601       enable_languages=all
1602     fi
1603   else
1604     if test x"${enable_languages}" = x ||
1605        test x"${enable_languages}" = xyes;
1606        then
1607       echo configure.in: --enable-languages needs at least one language argument 1>&2
1608       exit 1
1609     fi
1610   fi
1611   enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1612
1613   # 'f95' is the old name for the 'fortran' language. We issue a warning
1614   # and make the substitution.
1615   case ,${enable_languages}, in
1616     *,f95,*)
1617       echo configure.in: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1618       enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1619       ;;
1620   esac
1621
1622   # If bootstrapping, C++ must be enabled.
1623   case ",$enable_languages,:$enable_bootstrap" in
1624     *,c++,*:*) ;;
1625     *:yes)
1626       if test -f ${srcdir}/gcc/cp/config-lang.in; then
1627         enable_languages="${enable_languages},c++"
1628       else
1629         AC_MSG_ERROR([bootstrapping requires c++ sources])
1630       fi
1631       ;;
1632   esac
1633
1634   # First scan to see if an enabled language requires some other language.
1635   # We assume that a given config-lang.in will list all the language
1636   # front ends it requires, even if some are required indirectly.
1637   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1638     case ${lang_frag} in
1639       ..) ;;
1640       # The odd quoting in the next line works around
1641       # an apparent bug in bash 1.12 on linux.
1642       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1643       *)
1644         # From the config-lang.in, get $language, $lang_requires, and
1645         # $lang_requires_boot_languages.
1646         language=
1647         lang_requires=
1648         lang_requires_boot_languages=
1649         . ${lang_frag}
1650         for other in ${lang_requires} ${lang_requires_boot_languages}; do
1651           case ,${enable_languages}, in
1652             *,$other,*) ;;
1653             *,all,*) ;;
1654             *,$language,*)
1655               echo " \`$other' language required by \`$language'; enabling" 1>&2
1656               enable_languages="${enable_languages},${other}"
1657               ;;
1658           esac
1659         done
1660         for other in ${lang_requires_boot_languages} ; do
1661           if test "$other" != "c"; then
1662             case ,${enable_stage1_languages}, in
1663               *,$other,*) ;;
1664               *,all,*) ;;
1665               *)
1666                 case ,${enable_languages}, in
1667                   *,$language,*)
1668                     echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1669                     enable_stage1_languages="$enable_stage1_languages,${other}"
1670                     ;;
1671                 esac
1672                 ;;
1673             esac
1674           fi
1675         done
1676         ;;
1677     esac
1678   done
1679
1680   new_enable_languages=,c,
1681
1682   # If LTO is enabled, add the LTO front end.
1683   extra_host_libiberty_configure_flags=
1684   if test "$enable_lto" = "yes" ; then
1685     case ,${enable_languages}, in
1686       *,lto,*) ;;
1687       *) enable_languages="${enable_languages},lto" ;;
1688     esac
1689     if test "${build_lto_plugin}" = "yes" ; then
1690       configdirs="$configdirs lto-plugin"
1691       extra_host_libiberty_configure_flags=--enable-shared
1692     fi
1693   fi
1694   AC_SUBST(extra_host_libiberty_configure_flags)
1695
1696   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1697   potential_languages=,c,
1698
1699   enabled_target_libs=
1700   disabled_target_libs=
1701
1702   for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1703     case ${lang_frag} in
1704       ..) ;;
1705       # The odd quoting in the next line works around
1706       # an apparent bug in bash 1.12 on linux.
1707       ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1708       *)
1709         # From the config-lang.in, get $language, $target_libs,
1710         # $lang_dirs, $boot_language, and $build_by_default
1711         language=
1712         target_libs=
1713         lang_dirs=
1714         subdir_requires=
1715         boot_language=no
1716         build_by_default=yes
1717         . ${lang_frag}
1718         if test x${language} = x; then
1719           echo "${lang_frag} doesn't set \$language." 1>&2
1720           exit 1
1721         fi
1722
1723         if test "$language" = "c++"; then
1724           boot_language=yes
1725         fi
1726
1727         case ,${enable_languages}, in
1728           *,${language},*)
1729             # Language was explicitly selected; include it
1730             # unless it is C, which is enabled by default.
1731             if test "$language" != "c"; then
1732               add_this_lang=yes
1733             fi
1734             ;;
1735           *,all,*)
1736             # 'all' was selected, select it if it is a default language
1737             add_this_lang=${build_by_default}
1738             ;;
1739           *)
1740             add_this_lang=no
1741             ;;
1742         esac
1743
1744         # Disable languages that need other directories if these aren't available.
1745         for i in $subdir_requires; do
1746           test -f "$srcdir/gcc/$i/config-lang.in" && continue
1747           case ,${enable_languages}, in
1748             *,${language},*)
1749               # Specifically requested language; tell them.
1750               AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
1751               ;;
1752             *)
1753               # Silently disable.
1754               add_this_lang=unsupported
1755               ;;
1756           esac
1757         done
1758
1759         # Disable Ada if no preexisting GNAT is available.
1760         case ,${enable_languages},:${language}:${have_gnat} in
1761           *,${language},*:ada:no)
1762             # Specifically requested language; tell them.
1763             AC_MSG_ERROR([GNAT is required to build $language])
1764             ;;
1765           *:ada:no)
1766             # Silently disable.
1767             add_this_lang=unsupported
1768             ;;
1769         esac
1770
1771         # Disable a language that is unsupported by the target.
1772         case " $unsupported_languages " in
1773           *" $language "*)
1774             add_this_lang=unsupported
1775             ;;
1776         esac
1777
1778         case $add_this_lang in
1779           unsupported)
1780             # Remove language-dependent dirs.
1781             disabled_target_libs="$disabled_target_libs $target_libs"
1782             noconfigdirs="$noconfigdirs $lang_dirs"
1783             ;;
1784           no)
1785             # Remove language-dependent dirs; still show language as supported.
1786             disabled_target_libs="$disabled_target_libs $target_libs"
1787             noconfigdirs="$noconfigdirs $lang_dirs"
1788             potential_languages="${potential_languages}${language},"
1789             ;;
1790           yes)
1791             new_enable_languages="${new_enable_languages}${language},"
1792             potential_languages="${potential_languages}${language},"
1793             missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
1794             enabled_target_libs="$enabled_target_libs $target_libs"
1795             case "${boot_language}:,$enable_stage1_languages," in
1796               yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
1797                 # Add to (comma-separated) list of stage 1 languages.
1798                 case ",$stage1_languages," in
1799                   *,$language,* | ,yes, | ,all,) ;;
1800                   *) stage1_languages="${stage1_languages}${language}," ;;
1801                 esac
1802                 # We need to bootstrap any supporting libraries.
1803                 bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
1804                 ;;
1805             esac
1806             ;;
1807         esac
1808         ;;
1809     esac
1810   done
1811
1812   # Add target libraries which are only needed for disabled languages
1813   # to noconfigdirs.
1814   if test -n "$disabled_target_libs"; then
1815     for dir in $disabled_target_libs; do
1816       case " $enabled_target_libs " in
1817       *" ${dir} "*) ;;
1818       *) noconfigdirs="$noconfigdirs $dir" ;;
1819       esac
1820     done
1821   fi
1822
1823   AC_ARG_ENABLE(stage1-languages,
1824   [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
1825                   [choose additional languages to build during
1826                   stage1.  Mostly useful for compiler development])],
1827   [case ,${enable_stage1_languages}, in
1828     ,no,|,,)
1829       # Set it to something that will have no effect in the loop below
1830       enable_stage1_languages=c ;;
1831     ,yes,)
1832       enable_stage1_languages=`echo $new_enable_languages | \
1833         sed -e "s/^,//" -e "s/,$//" ` ;;
1834     *,all,*)
1835       enable_stage1_languages=`echo ,$enable_stage1_languages, | \
1836         sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
1837   esac
1838
1839   # Add "good" languages from enable_stage1_languages to stage1_languages,
1840   # while "bad" languages go in missing_languages.  Leave no duplicates.
1841   for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
1842     case $potential_languages in
1843       *,$i,*)
1844         case $stage1_languages in
1845           *,$i,*) ;;
1846           *) stage1_languages="$stage1_languages$i," ;;
1847         esac ;;
1848       *)
1849         case $missing_languages in
1850           *,$i,*) ;;
1851           *) missing_languages="$missing_languages$i," ;;
1852         esac ;;
1853      esac
1854   done])
1855
1856   # Remove leading/trailing commas that were added for simplicity
1857   potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
1858   missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
1859   stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
1860   new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
1861
1862   if test "x$missing_languages" != x; then
1863     AC_MSG_ERROR([
1864 The following requested languages could not be built: ${missing_languages}
1865 Supported languages are: ${potential_languages}])
1866   fi
1867   if test "x$new_enable_languages" != "x$enable_languages"; then
1868     echo The following languages will be built: ${new_enable_languages}
1869     enable_languages="$new_enable_languages"
1870   fi
1871
1872   AC_SUBST(stage1_languages)
1873   ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
1874 fi
1875
1876 # Handle --disable-<component> generically.
1877 for dir in $configdirs $build_configdirs $target_configdirs ; do
1878   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
1879   varname=`echo $dirname | sed -e s/+/_/g`
1880   if eval test x\${enable_${varname}} "=" xno ; then
1881     noconfigdirs="$noconfigdirs $dir"
1882   fi
1883 done
1884
1885 # Check for Boehm's garbage collector
1886 AC_ARG_ENABLE(objc-gc,
1887 [AS_HELP_STRING([--enable-objc-gc],
1888                 [enable use of Boehm's garbage collector with the
1889                  GNU Objective-C runtime])],
1890 [case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
1891   *,objc,*:*:yes:*target-boehm-gc*)
1892     AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
1893     ;;
1894 esac])
1895
1896 # Make sure we only build Boehm's garbage collector if required.
1897 case ,${enable_languages},:${enable_objc_gc} in
1898   *,objc,*:yes)
1899     # Keep target-boehm-gc if requested for Objective-C.
1900     ;;
1901   *)
1902     # Otherwise remove target-boehm-gc depending on target-libjava.
1903     if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
1904       noconfigdirs="$noconfigdirs target-boehm-gc"
1905     fi
1906     ;;
1907 esac
1908
1909 # Disable libitm if we're not building C++
1910 case ,${enable_languages}, in
1911   *,c++,*) ;;
1912   *)
1913     noconfigdirs="$noconfigdirs target-libitm"
1914     ;;
1915 esac
1916
1917 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
1918 # $build_configdirs and $target_configdirs.
1919 # If we have the source for $noconfigdirs entries, add them to $notsupp.
1920
1921 notsupp=""
1922 for dir in . $skipdirs $noconfigdirs ; do
1923   dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
1924   if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1925     configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
1926     if test -r $srcdir/$dirname/configure ; then
1927       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1928         true
1929       else
1930         notsupp="$notsupp $dir"
1931       fi
1932     fi
1933   fi
1934   if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1935     build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
1936     if test -r $srcdir/$dirname/configure ; then
1937       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1938         true
1939       else
1940         notsupp="$notsupp $dir"
1941       fi
1942     fi
1943   fi
1944   if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1945     target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
1946     if test -r $srcdir/$dirname/configure ; then
1947       if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1948         true
1949       else
1950         notsupp="$notsupp $dir"
1951       fi
1952     fi
1953   fi
1954 done
1955
1956 # Quietly strip out all directories which aren't configurable in this tree.
1957 # This relies on all configurable subdirectories being autoconfiscated, which
1958 # is now the case.
1959 build_configdirs_all="$build_configdirs"
1960 build_configdirs=
1961 for i in ${build_configdirs_all} ; do
1962   j=`echo $i | sed -e s/build-//g`
1963   if test -f ${srcdir}/$j/configure ; then
1964     build_configdirs="${build_configdirs} $i"
1965   fi
1966 done
1967
1968 configdirs_all="$configdirs"
1969 configdirs=
1970 for i in ${configdirs_all} ; do
1971   if test -f ${srcdir}/$i/configure ; then
1972     configdirs="${configdirs} $i"
1973   fi
1974 done
1975
1976 target_configdirs_all="$target_configdirs"
1977 target_configdirs=
1978 for i in ${target_configdirs_all} ; do
1979   j=`echo $i | sed -e s/target-//g`
1980   if test -f ${srcdir}/$j/configure ; then
1981     target_configdirs="${target_configdirs} $i"
1982   fi
1983 done
1984
1985 # Produce a warning message for the subdirs we can't configure.
1986 # This isn't especially interesting in the Cygnus tree, but in the individual
1987 # FSF releases, it's important to let people know when their machine isn't
1988 # supported by the one or two programs in a package.
1989
1990 if test -n "${notsupp}" && test -z "${norecursion}" ; then
1991   # If $appdirs is non-empty, at least one of those directories must still
1992   # be configured, or we error out.  (E.g., if the gas release supports a
1993   # specified target in some subdirs but not the gas subdir, we shouldn't
1994   # pretend that all is well.)
1995   if test -n "$appdirs" ; then
1996     for dir in $appdirs ; do
1997       if test -r $dir/Makefile.in ; then
1998         if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
1999           appdirs=""
2000           break
2001         fi
2002         if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2003           appdirs=""
2004           break
2005         fi
2006       fi
2007     done
2008     if test -n "$appdirs" ; then
2009       echo "*** This configuration is not supported by this package." 1>&2
2010       exit 1
2011     fi
2012   fi
2013   # Okay, some application will build, or we don't care to check.  Still
2014   # notify of subdirs not getting built.
2015   echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2016   echo "    ${notsupp}" 1>&2
2017   echo "    (Any other directories should still work fine.)" 1>&2
2018 fi
2019
2020 case "$host" in
2021   *msdosdjgpp*)
2022     enable_gdbtk=no ;;
2023 esac
2024
2025 # To find our prefix, in gcc_cv_tool_prefix.
2026 ACX_TOOL_DIRS
2027
2028 copy_dirs=
2029
2030 AC_ARG_WITH([build-sysroot],
2031   [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2032                   [use sysroot as the system root during the build])],
2033   [if test x"$withval" != x ; then
2034      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2035    fi],
2036   [SYSROOT_CFLAGS_FOR_TARGET=])
2037 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2038
2039 AC_ARG_WITH([debug-prefix-map],
2040   [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2041                   [map A to B, C to D ... in debug information])],
2042   [if test x"$withval" != x; then
2043      DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2044      for debug_map in $withval; do
2045        DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2046      done
2047    fi],
2048   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2049 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2050
2051 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2052 # might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2053 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2054 # We want to ensure that TARGET libraries (which we know are built with
2055 # gcc) are built with "-O2 -g", so include those options when setting
2056 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2057 if test "x$CFLAGS_FOR_TARGET" = x; then
2058   CFLAGS_FOR_TARGET=$CFLAGS
2059   case " $CFLAGS " in
2060     *" -O2 "*) ;;
2061     *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2062   esac
2063   case " $CFLAGS " in
2064     *" -g "* | *" -g3 "*) ;;
2065     *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2066   esac
2067 fi
2068 AC_SUBST(CFLAGS_FOR_TARGET)
2069
2070 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2071   CXXFLAGS_FOR_TARGET=$CXXFLAGS
2072   case " $CXXFLAGS " in
2073     *" -O2 "*) ;;
2074     *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2075   esac
2076   case " $CXXFLAGS " in
2077     *" -g "* | *" -g3 "*) ;;
2078     *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2079   esac
2080 fi
2081 AC_SUBST(CXXFLAGS_FOR_TARGET)
2082
2083 AC_SUBST(LDFLAGS_FOR_TARGET)
2084
2085 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
2086 # the named directory are copied to $(tooldir)/sys-include.
2087 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2088   if test x${is_cross_compiler} = xno ; then
2089     echo 1>&2 '***' --with-headers is only supported when cross compiling
2090     exit 1
2091   fi
2092   if test x"${with_headers}" != xyes ; then
2093     x=${gcc_cv_tool_prefix}
2094     copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2095   fi
2096 fi
2097
2098 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
2099 # the name directories are copied to $(tooldir)/lib.  Multiple directories
2100 # are permitted.
2101 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2102   if test x${is_cross_compiler} = xno ; then
2103     echo 1>&2 '***' --with-libs is only supported when cross compiling
2104     exit 1
2105   fi
2106   if test x"${with_libs}" != xyes ; then
2107     # Copy the libraries in reverse order, so that files in the first named
2108     # library override files in subsequent libraries.
2109     x=${gcc_cv_tool_prefix}
2110     for l in ${with_libs}; do
2111       copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2112     done
2113   fi
2114 fi
2115
2116 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2117 #
2118 # This is done by determining whether or not the appropriate directory
2119 # is available, and by checking whether or not specific configurations
2120 # have requested that this magic not happen.
2121 #
2122 # The command line options always override the explicit settings in
2123 # configure.in, and the settings in configure.in override this magic.
2124 #
2125 # If the default for a toolchain is to use GNU as and ld, and you don't
2126 # want to do that, then you should use the --without-gnu-as and
2127 # --without-gnu-ld options for the configure script.  Similarly, if
2128 # the default is to use the included zlib and you don't want to do that,
2129 # you should use the --with-system-zlib option for the configure script.
2130
2131 if test x${use_gnu_as} = x &&
2132    echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2133   with_gnu_as=yes
2134   extra_host_args="$extra_host_args --with-gnu-as"
2135 fi
2136
2137 if test x${use_gnu_ld} = x &&
2138    echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2139   with_gnu_ld=yes
2140   extra_host_args="$extra_host_args --with-gnu-ld"
2141 fi
2142
2143 if test x${use_included_zlib} = x &&
2144    echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2145   :
2146 else
2147   with_system_zlib=yes
2148   extra_host_args="$extra_host_args --with-system-zlib"
2149 fi
2150
2151 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2152 # can detect this case.
2153
2154 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2155   with_newlib=yes
2156   extra_host_args="$extra_host_args --with-newlib"
2157 fi
2158
2159 # Handle ${copy_dirs}
2160 set fnord ${copy_dirs}
2161 shift
2162 while test $# != 0 ; do
2163   if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2164     :
2165   else
2166     echo Copying $1 to $2
2167
2168     # Use the install script to create the directory and all required
2169     # parent directories.
2170     if test -d $2 ; then
2171       :
2172     else
2173       echo >config.temp
2174       ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2175     fi
2176
2177     # Copy the directory, assuming we have tar.
2178     # FIXME: Should we use B in the second tar?  Not all systems support it.
2179     (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2180
2181     # It is the responsibility of the user to correctly adjust all
2182     # symlinks.  If somebody can figure out how to handle them correctly
2183     # here, feel free to add the code.
2184
2185     echo $1 > $2/COPIED
2186   fi
2187   shift; shift
2188 done
2189
2190 # Determine a target-dependent exec_prefix that the installed
2191 # gcc will search in.  Keep this list sorted by triplet, with
2192 # the *-*-osname triplets last.
2193 md_exec_prefix=
2194 case "${target}" in
2195   i[[34567]]86-pc-msdosdjgpp*)
2196     md_exec_prefix=/dev/env/DJDIR/bin
2197     ;;
2198   *-*-hpux* | \
2199   *-*-nto-qnx* | \
2200   *-*-solaris2*)
2201     md_exec_prefix=/usr/ccs/bin
2202     ;;
2203 esac
2204
2205 extra_arflags_for_target=
2206 extra_nmflags_for_target=
2207 extra_ranlibflags_for_target=
2208 target_makefile_frag=/dev/null
2209 case "${target}" in
2210   spu-*-*)
2211     target_makefile_frag="config/mt-spu"
2212     ;;
2213   mips*-sde-elf*)
2214     target_makefile_frag="config/mt-sde"
2215     ;;
2216   mipsisa*-*-elfoabi*)
2217     target_makefile_frag="config/mt-mips-elfoabi"
2218     ;;
2219   mips*-*-*linux* | mips*-*-gnu*)
2220     target_makefile_frag="config/mt-mips-gnu"
2221     ;;
2222   *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2223     target_makefile_frag="config/mt-gnu"
2224     ;;
2225   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2226     # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2227     # commands to handle both 32-bit and 64-bit objects.  These flags are
2228     # harmless if we're using GNU nm or ar.
2229     extra_arflags_for_target=" -X32_64"
2230     extra_nmflags_for_target=" -B -X32_64"
2231     ;;
2232 esac
2233
2234 alphaieee_frag=/dev/null
2235 case $target in
2236   alpha*-*-*)
2237     # This just makes sure to use the -mieee option to build target libs.
2238     # This should probably be set individually by each library.
2239     alphaieee_frag="config/mt-alphaieee"
2240     ;;
2241 esac
2242
2243 # If --enable-target-optspace always use -Os instead of -O2 to build
2244 # the target libraries, similarly if it is not specified, use -Os
2245 # on selected platforms.
2246 ospace_frag=/dev/null
2247 case "${enable_target_optspace}:${target}" in
2248   yes:*)
2249     ospace_frag="config/mt-ospace"
2250     ;;
2251   :d30v-*)
2252     ospace_frag="config/mt-d30v"
2253     ;;
2254   :m32r-* | :d10v-* | :fr30-*)
2255     ospace_frag="config/mt-ospace"
2256     ;;
2257   no:* | :*)
2258     ;;
2259   *)
2260     echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2261     ;;
2262 esac
2263
2264 # Some systems (e.g., one of the i386-aix systems the gas testers are
2265 # using) don't handle "\$" correctly, so don't use it here.
2266 tooldir='${exec_prefix}'/${target_noncanonical}
2267 build_tooldir=${tooldir}
2268
2269 # Create a .gdbinit file which runs the one in srcdir
2270 # and tells GDB to look there for source files.
2271
2272 if test -r ${srcdir}/.gdbinit ; then
2273   case ${srcdir} in
2274     .) ;;
2275     *) cat > ./.gdbinit <<EOF
2276 # ${NO_EDIT}
2277 dir ${srcdir}
2278 dir .
2279 source ${srcdir}/.gdbinit
2280 EOF
2281     ;;
2282   esac
2283 fi
2284
2285 # Make sure that the compiler is able to generate an executable.  If it
2286 # can't, we are probably in trouble.  We don't care whether we can run the
2287 # executable--we might be using a cross compiler--we only care whether it
2288 # can be created.  At this point the main configure script has set CC.
2289 we_are_ok=no
2290 echo "int main () { return 0; }" > conftest.c
2291 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2292 if test $? = 0 ; then
2293   if test -s conftest || test -s conftest.exe ; then
2294     we_are_ok=yes
2295   fi
2296 fi
2297 case $we_are_ok in
2298   no)
2299     echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2300     echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2301     rm -f conftest*
2302     exit 1
2303     ;;
2304 esac
2305 rm -f conftest*
2306
2307 # Decide which environment variable is used to find dynamic libraries.
2308 case "${host}" in
2309   *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2310   *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2311   *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2312   *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2313 esac
2314
2315 # On systems where the dynamic library environment variable is PATH,
2316 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
2317 # built executables to PATH.
2318 if test "$RPATH_ENVVAR" = PATH; then
2319   GCC_SHLIB_SUBDIR=/shlib
2320 else
2321   GCC_SHLIB_SUBDIR=
2322 fi
2323
2324 # Record target_configdirs and the configure arguments for target and
2325 # build configuration in Makefile.
2326 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2327 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2328
2329 # If we are building libgomp, bootstrap it.
2330 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2331   bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2332 fi
2333
2334 # Determine whether gdb needs tk/tcl or not.
2335 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2336 # and in that case we want gdb to be built without tk.  Ugh!
2337 # In fact I believe gdb is the *only* package directly dependent on tk,
2338 # so we should be able to put the 'maybe's in unconditionally and
2339 # leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2340 # 100% sure that that's safe though.
2341
2342 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2343 case "$enable_gdbtk" in
2344   no)
2345     GDB_TK="" ;;
2346   yes)
2347     GDB_TK="${gdb_tk}" ;;
2348   *)
2349     # Only add the dependency on gdbtk when GDBtk is part of the gdb
2350     # distro.  Eventually someone will fix this and move Insight, nee
2351     # gdbtk to a separate directory.
2352     if test -d ${srcdir}/gdb/gdbtk ; then
2353       GDB_TK="${gdb_tk}"
2354     else
2355       GDB_TK=""
2356     fi
2357     ;;
2358 esac
2359 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2360 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2361
2362 # Strip out unwanted targets.
2363
2364 # While at that, we remove Makefiles if we were started for recursive
2365 # configuration, so that the top-level Makefile reconfigures them,
2366 # like we used to do when configure itself was recursive.
2367
2368 # Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2369 # but now we're fixing up the Makefile ourselves with the additional
2370 # commands passed to AC_CONFIG_FILES.  Use separate variables
2371 # extrasub-{build,host,target} not because there is any reason to split
2372 # the substitutions up that way, but only to remain below the limit of
2373 # 99 commands in a script, for HP-UX sed.
2374 # Do not nest @if/@endif pairs, because configure will not warn you at all.
2375
2376 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2377   yes:yes:*\ gold\ *:*,c++,*) ;;
2378   yes:yes:*\ gold\ *:*)
2379     AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2380     ;;
2381 esac
2382
2383 # Adjust the toplevel makefile according to whether bootstrap was selected.
2384 case $enable_bootstrap in
2385   yes)
2386     bootstrap_suffix=bootstrap
2387     BUILD_CONFIG=bootstrap-debug
2388     ;;
2389   no)
2390     bootstrap_suffix=no-bootstrap
2391     BUILD_CONFIG=
2392     ;;
2393 esac
2394
2395 AC_MSG_CHECKING(for default BUILD_CONFIG)
2396
2397 AC_ARG_WITH([build-config],
2398   [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2399                   [use config/NAME.mk build configuration])],
2400   [case $with_build_config in
2401    yes) with_build_config= ;;
2402    no) with_build_config= BUILD_CONFIG= ;;
2403    esac])
2404
2405 if test "x${with_build_config}" != x; then
2406   BUILD_CONFIG=$with_build_config
2407 else
2408   case $BUILD_CONFIG in
2409   bootstrap-debug)
2410     if echo "int f (void) { return 0; }" > conftest.c &&
2411        ${CC} -c conftest.c &&
2412        mv conftest.o conftest.o.g0 &&
2413        ${CC} -c -g conftest.c &&
2414        mv conftest.o conftest.o.g &&
2415        ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2416       :
2417     else
2418       BUILD_CONFIG=
2419     fi
2420     rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2421     ;;
2422   esac
2423 fi
2424 AC_MSG_RESULT($BUILD_CONFIG)
2425 AC_SUBST(BUILD_CONFIG)
2426
2427 extrasub_build=
2428 for module in ${build_configdirs} ; do
2429   if test -z "${no_recursion}" \
2430      && test -f ${build_subdir}/${module}/Makefile; then
2431     echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2432     rm -f ${build_subdir}/${module}/Makefile
2433   fi
2434   extrasub_build="$extrasub_build
2435 /^@if build-$module\$/d
2436 /^@endif build-$module\$/d
2437 /^@if build-$module-$bootstrap_suffix\$/d
2438 /^@endif build-$module-$bootstrap_suffix\$/d"
2439 done
2440 extrasub_host=
2441 for module in ${configdirs} ; do
2442   if test -z "${no_recursion}"; then
2443     for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2444       if test -f ${file}; then
2445         echo 1>&2 "*** removing ${file} to force reconfigure"
2446         rm -f ${file}
2447       fi
2448     done
2449   fi
2450   extrasub_host="$extrasub_host
2451 /^@if $module\$/d
2452 /^@endif $module\$/d
2453 /^@if $module-$bootstrap_suffix\$/d
2454 /^@endif $module-$bootstrap_suffix\$/d"
2455 done
2456 extrasub_target=
2457 for module in ${target_configdirs} ; do
2458   if test -z "${no_recursion}" \
2459      && test -f ${target_subdir}/${module}/Makefile; then
2460     echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2461     rm -f ${target_subdir}/${module}/Makefile
2462   fi
2463
2464   # We only bootstrap target libraries listed in bootstrap_target_libs.
2465   case $bootstrap_target_libs in
2466     *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2467     *) target_bootstrap_suffix=no-bootstrap ;;
2468   esac
2469
2470   extrasub_target="$extrasub_target
2471 /^@if target-$module\$/d
2472 /^@endif target-$module\$/d
2473 /^@if target-$module-$target_bootstrap_suffix\$/d
2474 /^@endif target-$module-$target_bootstrap_suffix\$/d"
2475 done
2476
2477 # Do the final fixup along with target modules.
2478 extrasub_target="$extrasub_target
2479 /^@if /,/^@endif /d"
2480
2481 # Create the serialization dependencies.  This uses a temporary file.
2482
2483 AC_ARG_ENABLE([serial-configure],
2484 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2485                 [force sequential configuration of
2486                  sub-packages for the host, target or build
2487                  machine, or all sub-packages])])
2488
2489 case ${enable_serial_configure} in
2490   yes)
2491     enable_serial_build_configure=yes
2492     enable_serial_host_configure=yes
2493     enable_serial_target_configure=yes
2494     ;;
2495 esac
2496
2497 # These force 'configure's to be done one at a time, to avoid problems
2498 # with contention over a shared config.cache.
2499 rm -f serdep.tmp
2500 echo '# serdep.tmp' > serdep.tmp
2501 olditem=
2502 test "x${enable_serial_build_configure}" = xyes &&
2503 for item in ${build_configdirs} ; do
2504   case ${olditem} in
2505     "") ;;
2506     *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2507   esac
2508   olditem=${item}
2509 done
2510 olditem=
2511 test "x${enable_serial_host_configure}" = xyes &&
2512 for item in ${configdirs} ; do
2513   case ${olditem} in
2514     "") ;;
2515     *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2516   esac
2517   olditem=${item}
2518 done
2519 olditem=
2520 test "x${enable_serial_target_configure}" = xyes &&
2521 for item in ${target_configdirs} ; do
2522   case ${olditem} in
2523     "") ;;
2524     *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2525   esac
2526   olditem=${item}
2527 done
2528 serialization_dependencies=serdep.tmp
2529 AC_SUBST_FILE(serialization_dependencies)
2530
2531 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
2532 # target, nonopt, and variable assignments.  These are the ones we
2533 # might not want to pass down to subconfigures.  The exception being
2534 # --cache-file=/dev/null, which is used to turn off the use of cache
2535 # files altogether, and which should be passed on to subconfigures.
2536 # Also strip program-prefix, program-suffix, and program-transform-name,
2537 # so that we can pass down a consistent program-transform-name.
2538 baseargs=
2539 tbaseargs=
2540 keep_next=no
2541 skip_next=no
2542 eval "set -- $ac_configure_args"
2543 for ac_arg
2544 do
2545   if test X"$skip_next" = X"yes"; then
2546     skip_next=no
2547     continue
2548   fi
2549   if test X"$keep_next" = X"yes"; then
2550     case $ac_arg in
2551       *\'*)
2552         ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2553     esac
2554     baseargs="$baseargs '$ac_arg'"
2555     tbaseargs="$tbaseargs '$ac_arg'"
2556     keep_next=no
2557     continue
2558   fi
2559
2560   # Handle separated arguments.  Based on the logic generated by
2561   # autoconf 2.59.
2562   case $ac_arg in
2563     *=* | --config-cache | -C | -disable-* | --disable-* \
2564       | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2565       | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2566       | -with-* | --with-* | -without-* | --without-* | --x)
2567       separate_arg=no
2568       ;;
2569     -*)
2570       separate_arg=yes
2571       ;;
2572     *)
2573       separate_arg=no
2574       ;;
2575   esac
2576
2577   skip_targ=no
2578   case $ac_arg in
2579 changequote(,)
2580   --with-* | --without-*)
2581     libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2582
2583     case $libopt in
2584     *[-_]include)
2585       lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2586       ;;
2587     *[-_]lib)
2588       lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2589       ;;
2590     *)
2591       lib=$libopt
2592       ;;
2593     esac
2594 changequote([,])
2595
2596     case $lib in
2597     mpc | mpfr | gmp | cloog)
2598       # If we're processing --with-$lib, --with-$lib-include or
2599       # --with-$lib-lib, for one of the libs above, and target is
2600       # different from host, don't pass the current argument to any
2601       # target library's configure.
2602       if test x$is_cross_compiler = xyes; then
2603         skip_targ=yes
2604       fi
2605       ;;
2606     esac
2607     ;;
2608   esac
2609
2610   case "$ac_arg" in
2611     --cache-file=/dev/null | \
2612     -cache-file=/dev/null )
2613       # Handled here to avoid the test to skip args below.
2614       baseargs="$baseargs '$ac_arg'"
2615       tbaseargs="$tbaseargs '$ac_arg'"
2616       # Assert: $separate_arg should always be no.
2617       keep_next=$separate_arg
2618       ;;
2619     --no*)
2620       continue
2621       ;;
2622     --c* | \
2623     --sr* | \
2624     --ho* | \
2625     --bu* | \
2626     --t* | \
2627     --program-* | \
2628     -cache_file* | \
2629     -srcdir* | \
2630     -host* | \
2631     -build* | \
2632     -target* | \
2633     -program-prefix* | \
2634     -program-suffix* | \
2635     -program-transform-name* )
2636       skip_next=$separate_arg
2637       continue
2638       ;;
2639     -*)
2640       # An option.  Add it.
2641       case $ac_arg in
2642         *\'*)
2643           ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2644       esac
2645       baseargs="$baseargs '$ac_arg'"
2646       if test X"$skip_targ" = Xno; then
2647         tbaseargs="$tbaseargs '$ac_arg'"
2648       fi
2649       keep_next=$separate_arg
2650       ;;
2651     *)
2652       # Either a variable assignment, or a nonopt (triplet).  Don't
2653       # pass it down; let the Makefile handle this.
2654       continue
2655       ;;
2656   esac
2657 done
2658 # Remove the initial space we just introduced and, as these will be
2659 # expanded by make, quote '$'.
2660 baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
2661
2662 # Add in --program-transform-name, after --program-prefix and
2663 # --program-suffix have been applied to it.  Autoconf has already
2664 # doubled dollar signs and backslashes in program_transform_name; we want
2665 # the backslashes un-doubled, and then the entire thing wrapped in single
2666 # quotes, because this will be expanded first by make and then by the shell.
2667 # Also, because we want to override the logic in subdir configure scripts to
2668 # choose program_transform_name, replace any s,x,x, with s,y,y,.
2669 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
2670 ${program_transform_name}
2671 EOF_SED
2672 gcc_transform_name=`cat conftestsed.out`
2673 rm -f conftestsed.out
2674 baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
2675 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
2676 if test "$silent" = yes; then
2677   baseargs="$baseargs --silent"
2678   tbaseargs="$tbaseargs --silent"
2679 fi
2680 baseargs="$baseargs --disable-option-checking"
2681 tbaseargs="$tbaseargs --disable-option-checking"
2682
2683 # Record and document user additions to sub configure arguments.
2684 AC_ARG_VAR([build_configargs],
2685            [additional configure arguments for build directories])
2686 AC_ARG_VAR([host_configargs],
2687            [additional configure arguments for host directories])
2688 AC_ARG_VAR([target_configargs],
2689            [additional configure arguments for target directories])
2690
2691 # For the build-side libraries, we just need to pretend we're native,
2692 # and not use the same cache file.  Multilibs are neither needed nor
2693 # desired.
2694 build_configargs="$build_configargs --cache-file=../config.cache ${baseargs}"
2695
2696 # For host modules, accept cache file option, or specification as blank.
2697 case "${cache_file}" in
2698 "") # empty
2699   cache_file_option="" ;;
2700 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
2701   cache_file_option="--cache-file=${cache_file}" ;;
2702 *) # relative path
2703   cache_file_option="--cache-file=../${cache_file}" ;;
2704 esac
2705
2706 # Host dirs don't like to share a cache file either, horribly enough.
2707 # This seems to be due to autoconf 2.5x stupidity.
2708 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
2709
2710 target_configargs="$target_configargs ${tbaseargs}"
2711
2712 # Passing a --with-cross-host argument lets the target libraries know
2713 # whether they are being built with a cross-compiler or being built
2714 # native.  However, it would be better to use other mechanisms to make the
2715 # sorts of decisions they want to make on this basis.  Please consider
2716 # this option to be deprecated.  FIXME.
2717 if test x${is_cross_compiler} = xyes ; then
2718   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
2719 fi
2720
2721 # Default to --enable-multilib.
2722 if test x${enable_multilib} = x ; then
2723   target_configargs="--enable-multilib ${target_configargs}"
2724 fi
2725
2726 # Pass --with-newlib if appropriate.  Note that target_configdirs has
2727 # changed from the earlier setting of with_newlib.
2728 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
2729   target_configargs="--with-newlib ${target_configargs}"
2730 fi
2731
2732 # Different target subdirs use different values of certain variables
2733 # (notably CXX).  Worse, multilibs use *lots* of different values.
2734 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
2735 # it doesn't automatically accept command-line overrides of them.
2736 # This means it's not safe for target subdirs to share a cache file,
2737 # which is disgusting, but there you have it.  Hopefully this can be
2738 # fixed in future.  It's still worthwhile to use a cache file for each
2739 # directory.  I think.
2740
2741 # Pass the appropriate --build, --host, --target and --cache-file arguments.
2742 # We need to pass --target, as newer autoconf's requires consistency
2743 # for target_alias and gcc doesn't manage it consistently.
2744 target_configargs="--cache-file=./config.cache ${target_configargs}"
2745
2746 FLAGS_FOR_TARGET=
2747 case " $target_configdirs " in
2748  *" newlib "*)
2749   case " $target_configargs " in
2750   *" --with-newlib "*)
2751    case "$target" in
2752     *-cygwin*)
2753       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/include -isystem $$s/winsup/cygwin/include -isystem $$s/winsup/w32api/include'
2754       ;;
2755    esac
2756
2757    # If we're not building GCC, don't discard standard headers.
2758    if test -d ${srcdir}/gcc; then
2759      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
2760
2761      if test "${build}" != "${host}"; then
2762        # On Canadian crosses, CC_FOR_TARGET will have already been set
2763        # by `configure', so we won't have an opportunity to add -Bgcc/
2764        # to it.  This is right: we don't want to search that directory
2765        # for binaries, but we want the header files in there, so add
2766        # them explicitly.
2767        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
2768
2769        # Someone might think of using the pre-installed headers on
2770        # Canadian crosses, in case the installed compiler is not fully
2771        # compatible with the compiler being built.  In this case, it
2772        # would be better to flag an error than risking having
2773        # incompatible object files being constructed.  We can't
2774        # guarantee that an error will be flagged, but let's hope the
2775        # compiler will do it, when presented with incompatible header
2776        # files.
2777      fi
2778    fi
2779
2780    case "${target}-${is_cross_compiler}" in
2781    i[[3456789]]86-*-linux*-no)
2782       # Here host == target, so we don't need to build gcc,
2783       # so we don't want to discard standard headers.
2784       FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
2785       ;;
2786    *)
2787       # If we're building newlib, use its generic headers last, but search
2788       # for any libc-related directories first (so make it the last -B
2789       # switch).
2790       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
2791
2792       # If we're building libgloss, find the startup file, simulator library
2793       # and linker script.
2794       case " $target_configdirs " in
2795         *" libgloss "*)
2796         # Look for startup file, simulator library and maybe linker script.
2797         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
2798         # Look for libnosys.a in case the target needs it.
2799         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
2800         # Most targets have the linker script in the source directory.
2801         FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
2802         ;;
2803       esac
2804       ;;
2805    esac
2806    ;;
2807   esac
2808   ;;
2809 esac
2810
2811 case "$target" in
2812   x86_64-*mingw* | *-w64-mingw*)
2813   # MinGW-w64 does not use newlib, nor does it use winsup. It may,
2814   # however, use a symlink named 'mingw' in ${prefix} .
2815     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
2816     ;;
2817   *-mingw*)
2818   # MinGW can't be handled as Cygwin above since it does not use newlib.
2819     FLAGS_FOR_TARGET=$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'
2820     ;;
2821 esac
2822
2823 # Allow the user to override the flags for
2824 # our build compiler if desired.
2825 if test x"${build}" = x"${host}" ; then
2826   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
2827   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
2828   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
2829 fi
2830
2831 # On Canadian crosses, we'll be searching the right directories for
2832 # the previously-installed cross compiler, so don't bother to add
2833 # flags for directories within the install tree of the compiler
2834 # being built; programs in there won't even run.
2835 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
2836   # Search for pre-installed headers if nothing else fits.
2837   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
2838 fi
2839
2840 if test "x${use_gnu_ld}" = x &&
2841    echo " ${configdirs} " | grep " ld " > /dev/null ; then
2842   # Arrange for us to find uninstalled linker scripts.
2843   FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
2844 fi
2845
2846 # Search for other target-specific linker scripts and such.
2847 case "${target}" in
2848   mep*)
2849     FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
2850     ;;
2851 esac
2852
2853 # Makefile fragments.
2854 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
2855 do
2856   eval fragval=\$$frag
2857   if test $fragval != /dev/null; then
2858     eval $frag=${srcdir}/$fragval
2859   fi
2860 done
2861 AC_SUBST_FILE(host_makefile_frag)
2862 AC_SUBST_FILE(target_makefile_frag)
2863 AC_SUBST_FILE(alphaieee_frag)
2864 AC_SUBST_FILE(ospace_frag)
2865
2866 # Miscellanea: directories, flags, etc.
2867 AC_SUBST(RPATH_ENVVAR)
2868 AC_SUBST(GCC_SHLIB_SUBDIR)
2869 AC_SUBST(tooldir)
2870 AC_SUBST(build_tooldir)
2871 AC_SUBST(CONFIGURE_GDB_TK)
2872 AC_SUBST(GDB_TK)
2873 AC_SUBST(INSTALL_GDB_TK)
2874
2875 # Build module lists & subconfigure args.
2876 AC_SUBST(build_configargs)
2877 AC_SUBST(build_configdirs)
2878
2879 # Host module lists & subconfigure args.
2880 AC_SUBST(host_configargs)
2881 AC_SUBST(configdirs)
2882 AC_SUBST(target_configdirs)
2883
2884 # Target module lists & subconfigure args.
2885 AC_SUBST(target_configargs)
2886
2887
2888 # Build tools.
2889 AC_SUBST(AR_FOR_BUILD)
2890 AC_SUBST(AS_FOR_BUILD)
2891 AC_SUBST(CC_FOR_BUILD)
2892 AC_SUBST(CFLAGS_FOR_BUILD)
2893 AC_SUBST(CXXFLAGS_FOR_BUILD)
2894 AC_SUBST(CXX_FOR_BUILD)
2895 AC_SUBST(DLLTOOL_FOR_BUILD)
2896 AC_SUBST(GCJ_FOR_BUILD)
2897 AC_SUBST(GFORTRAN_FOR_BUILD)
2898 AC_SUBST(GOC_FOR_BUILD)
2899 AC_SUBST(LDFLAGS_FOR_BUILD)
2900 AC_SUBST(LD_FOR_BUILD)
2901 AC_SUBST(NM_FOR_BUILD)
2902 AC_SUBST(RANLIB_FOR_BUILD)
2903 AC_SUBST(WINDMC_FOR_BUILD)
2904 AC_SUBST(WINDRES_FOR_BUILD)
2905
2906 # Generate default definitions for YACC, M4, LEX and other programs that run
2907 # on the build machine.  These are used if the Makefile can't locate these
2908 # programs in objdir.
2909 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
2910
2911 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
2912 case " $build_configdirs " in
2913   *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
2914 esac
2915
2916 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
2917 case " $build_configdirs " in
2918   *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
2919 esac
2920
2921 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
2922 case " $build_configdirs " in
2923   *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
2924 esac
2925
2926 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
2927 case " $build_configdirs " in
2928   *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
2929   *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
2930 esac
2931
2932 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
2933 case " $build_configdirs " in
2934   *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
2935 esac
2936
2937 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
2938 case " $build_configdirs " in
2939   *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
2940   *)
2941 changequote(,)
2942     # For an installed makeinfo, we require it to be from texinfo 4.7 or
2943     # higher, else we use the "missing" dummy.
2944     if ${MAKEINFO} --version \
2945        | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
2946       :
2947     else
2948       MAKEINFO="$MISSING makeinfo"
2949     fi
2950     ;;
2951 changequote([,])
2952 esac
2953
2954 # FIXME: expect and dejagnu may become build tools?
2955
2956 AC_CHECK_PROGS(EXPECT, expect, expect)
2957 case " $configdirs " in
2958   *" expect "*)
2959     test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
2960     ;;
2961 esac
2962
2963 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
2964 case " $configdirs " in
2965   *" dejagnu "*)
2966     test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
2967     ;;
2968 esac
2969
2970
2971 # Host tools.
2972 NCN_STRICT_CHECK_TOOLS(AR, ar)
2973 NCN_STRICT_CHECK_TOOLS(AS, as)
2974 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
2975 NCN_STRICT_CHECK_TOOLS(LD, ld)
2976 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
2977 NCN_STRICT_CHECK_TOOLS(NM, nm)
2978 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
2979 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
2980 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
2981 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
2982 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
2983 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
2984 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
2985 AC_SUBST(CC)
2986 AC_SUBST(CXX)
2987 AC_SUBST(CFLAGS)
2988 AC_SUBST(CXXFLAGS)
2989
2990 # Target tools.
2991 AC_ARG_WITH([build-time-tools],
2992   [AS_HELP_STRING([--with-build-time-tools=PATH],
2993                   [use given path to find target tools during the build])],
2994   [case x"$withval" in
2995      x/*) ;;
2996      *)
2997        with_build_time_tools=
2998        AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
2999        ;;
3000    esac],
3001   [with_build_time_tools=])
3002
3003 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3004 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3005 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3006 NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3007 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3008 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3009
3010 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3011 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3012 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3013 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3014 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3015 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3016 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3017 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3018 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3019 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3020 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3021 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3022
3023 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3024
3025 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3026 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3027 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3028 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3029 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3030                 [gcc/g++ -B$$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],
3031                 c++)
3032 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3033                 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs],
3034                 c++)
3035 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3036 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3037 GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3038                 [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3039 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3040                 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3041 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3042                 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3043 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3044 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3045 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3046 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3047 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3048 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3049 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3050 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3051 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3052
3053 AC_SUBST(FLAGS_FOR_TARGET)
3054 AC_SUBST(RAW_CXX_FOR_TARGET)
3055
3056 # Certain tools may need extra flags.
3057 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3058 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3059 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3060
3061 # When building target libraries, except in a Canadian cross, we use
3062 # the same toolchain as the compiler we just built.
3063 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3064 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3065 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3066 if test $host = $build; then
3067   case " $configdirs " in
3068     *" gcc "*)
3069       COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3070       COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3071       COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3072       ;;
3073   esac
3074 fi
3075
3076 AC_SUBST(COMPILER_AS_FOR_TARGET)
3077 AC_SUBST(COMPILER_LD_FOR_TARGET)
3078 AC_SUBST(COMPILER_NM_FOR_TARGET)
3079
3080 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3081 AC_ARG_ENABLE(maintainer-mode,
3082 [AS_HELP_STRING([--enable-maintainer-mode],
3083                 [enable make rules and dependencies not useful
3084                  (and sometimes confusing) to the casual installer])],
3085       USE_MAINTAINER_MODE=$enableval,
3086       USE_MAINTAINER_MODE=no)
3087 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3088 AC_SUBST(MAINTAINER_MODE_TRUE)
3089 AC_SUBST(MAINTAINER_MODE_FALSE)
3090 if test "$USE_MAINTAINER_MODE" = yes; then
3091   MAINTAINER_MODE_TRUE=
3092   MAINTAINER_MODE_FALSE='#'
3093 else
3094   MAINTAINER_MODE_TRUE='#'
3095   MAINTAINER_MODE_FALSE=
3096 fi
3097 MAINT=$MAINTAINER_MODE_TRUE
3098 AC_SUBST(MAINT)dnl
3099
3100 # ---------------------
3101 # GCC bootstrap support
3102 # ---------------------
3103
3104 # Stage specific cflags for build.
3105 stage1_cflags="-g"
3106 case $build in
3107   vax-*-*)
3108     case ${GCC} in
3109       yes) stage1_cflags="-g -Wa,-J" ;;
3110       *) stage1_cflags="-g -J" ;;
3111     esac ;;
3112 esac
3113
3114 AC_SUBST(stage1_cflags)
3115
3116 # Enable --enable-checking in stage1 of the compiler.
3117 AC_ARG_ENABLE(stage1-checking,
3118 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3119                 [choose additional checking for stage1 of the compiler])],
3120 [stage1_checking=--enable-checking=${enable_stage1_checking}],
3121 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3122   stage1_checking=--enable-checking=yes,types
3123 else
3124   stage1_checking=--enable-checking=$enable_checking,types
3125 fi])
3126 AC_SUBST(stage1_checking)
3127
3128 # Enable -Werror in bootstrap stage2 and later.
3129 AC_ARG_ENABLE(werror,
3130 [AS_HELP_STRING([--enable-werror],
3131                 [enable -Werror in bootstrap stage2 and later])], [],
3132 [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3133   enable_werror=yes
3134 else
3135   enable_werror=no
3136 fi])
3137 case ${enable_werror} in
3138   yes) stage2_werror_flag="--enable-werror-always" ;;
3139   *) stage2_werror_flag="" ;;
3140 esac
3141 AC_SUBST(stage2_werror_flag)
3142
3143 # Specify what files to not compare during bootstrap.
3144
3145 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3146 case "$target" in
3147   hppa*64*-*-hpux*) ;;
3148   hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3149 esac
3150 AC_SUBST(compare_exclusions)
3151
3152 AC_CONFIG_FILES([Makefile],
3153   [sed "$extrasub_build" Makefile |
3154    sed "$extrasub_host" |
3155    sed "$extrasub_target" > mf$$
3156    mv -f mf$$ Makefile],
3157   [extrasub_build="$extrasub_build"
3158    extrasub_host="$extrasub_host"
3159    extrasub_target="$extrasub_target"])
3160 AC_OUTPUT