configure.ac

#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
#   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
#   Inc.
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

##############################################################################
### WARNING: this file contains embedded tabs.  Do not run untabify on this file.

m4_include(config/acx.m4)
m4_include(config/override.m4)
m4_include(config/proginstall.m4)

AC_INIT(move-if-change)
AC_PREREQ(2.64)
AC_DISABLE_OPTION_CHECKING

progname=$0
# if PWD already has a value, it is probably wrong.
if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi

# Export original configure arguments for use by sub-configures.
# Quote arguments with shell meta charatcers.
TOPLEVEL_CONFIGURE_ARGUMENTS=
set -- "$progname" "$@"
for ac_arg
do
  case "$ac_arg" in
  *" "*|*"	"*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
    ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
    # if the argument is of the form -foo=baz, quote the baz part only
    ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
  *) ;;
  esac
  # Add the quoted argument to the list.
  TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
done
if test "$silent" = yes; then
  TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
fi
# Remove the initial space we just introduced and, as these will be
# expanded by make, quote '$'.
TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)

# Find the build, host, and target systems.
ACX_NONCANONICAL_BUILD
ACX_NONCANONICAL_HOST
ACX_NONCANONICAL_TARGET

dnl Autoconf 2.5x and later will set a default program prefix if
dnl --target was used, even if it was the same as --host.  Disable
dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
dnl to take effect.
test "$host_noncanonical" = "$target_noncanonical" &&
  test "$program_prefix$program_suffix$program_transform_name" = \
    NONENONEs,x,x, &&
  program_transform_name=s,y,y,

AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM

m4_pattern_allow([^AS_FOR_TARGET$])dnl
m4_pattern_allow([^AS_FOR_BUILD$])dnl

# Get 'install' or 'install-sh' and its variants.
AC_PROG_INSTALL
ACX_PROG_LN
AC_PROG_LN_S
AC_PROG_SED
AC_PROG_AWK

### we might need to use some other shell than /bin/sh for running subshells
### If we are on Windows, search for the shell.  This will permit people
### to not have /bin/sh, but to be able to see /SOME/PATH/sh configure
### without also having to set CONFIG_SHELL.  This code will work when
### using bash, which sets OSTYPE.
case "${OSTYPE}" in
*win32*)
  if test x${CONFIG_SHELL} = x ; then
    if test ! -f /bin/sh ; then
      if test x${SHELL} != x && test -f ${SHELL} ; then
	CONFIG_SHELL=${SHELL}
	export CONFIG_SHELL
      else
	for prog in sh sh.exe bash bash.exe; do
	  IFS="${IFS=	}"; save_ifs="$IFS"; IFS="${IFS}:"
	  for dir in $PATH; do
	    test -z "$dir" && dir=.
	    if test -f $dir/$prog; then
	      CONFIG_SHELL=$dir/$prog
	      export CONFIG_SHELL
	      break
	    fi
	  done
	  IFS="$save_ifs"
	  test -n "${CONFIG_SHELL}" && break
	done
      fi
    fi
  fi
  ;;
esac

config_shell=${CONFIG_SHELL-/bin/sh}

moveifchange=${srcdir}/move-if-change

srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`

# We pass INSTALL explicitly to sub-makes.  Make sure that it is not
# a relative path.
if test "$INSTALL" = "${srcdir}/install-sh -c"; then
  INSTALL="${srcpwd}/install-sh -c"
fi

# Set srcdir to "." if that's what it is.
# This is important for multilib support.
pwd=`${PWDCMD-pwd}`
if test "${pwd}" = "${srcpwd}" ; then
  srcdir=.
fi

topsrcdir=$srcpwd

extra_host_args=

### To add a new directory to the tree, first choose whether it is a target
### or a host dependent tool.  Then put it into the appropriate list
### (library or tools, host or target), doing a dependency sort.

# Subdirs will be configured in the order listed in build_configdirs, 
# configdirs, or target_configdirs; see the serialization section below.

# Dependency sorting is only needed when *configuration* must be done in 
# a particular order.  In all cases a dependency should be specified in 
# the Makefile, whether or not it's implicitly specified here.

# Double entries in build_configdirs, configdirs, or target_configdirs may
# cause circular dependencies and break everything horribly.

# these library is used by various programs built for the build
# environment
#
build_libs="build-libiberty"

# these tools are built for the build environment
build_tools="build-texinfo build-byacc build-flex build-bison build-m4 build-fixincludes"

# these libraries are used by various programs built for the host environment
#
host_libs="intl mmalloc libiberty opcodes bfd readline tcl tk itcl libgui zlib libcpp libdecnumber gmp mpfr mpc ppl cloog libelf libiconv"

# these tools are built for the host environment
# Note, the powerpc-eabi build depends on sim occurring before gdb in order to
# know that we are building the simulator.
# binutils, gas and ld appear in that order because it makes sense to run
# "make check" in that particular order.
# If --enable-gold is used, "gold" will replace "ld".
host_tools="texinfo byacc flex bison binutils gas ld fixincludes gcc cgen sid sim gdb make patch prms send-pr gprof etc expect dejagnu ash bash bzip2 m4 autoconf automake libtool diff rcs fileutils shellutils time textutils wdiff find uudecode hello tar gzip indent recode release sed utils guile perl gawk findutils gettext zip fastjar gnattools"

# libgcj represents the runtime libraries only used by gcj.
libgcj="target-libffi \
	target-zlib \
	target-qthreads \
	target-libjava"

# these libraries are built for the target environment, and are built after
# the host libraries and the host tools (which may be a cross compiler)
#
target_libraries="target-libgcc \
		target-libiberty \
		target-libgloss \
		target-newlib \
		target-libgomp \
		target-libstdc++-v3 \
		target-libmudflap \
		target-libssp \
		target-libgfortran \
		target-boehm-gc \
		${libgcj} \
		target-libobjc \
		target-libada"

# these tools are built using the target libraries, and are intended to
# run only in the target environment
#
# note: any program that *uses* libraries that are in the "target_libraries"
# list belongs in this list.  those programs are also very likely
# candidates for the "native_only" list which follows
#
target_tools="target-examples target-groff target-gperf target-rda"

################################################################################

## All tools belong in one of the four categories, and are assigned above
## We assign ${configdirs} this way to remove all embedded newlines.  This
## is important because configure will choke if they ever get through.
## ${configdirs} is directories we build using the host tools.
## ${target_configdirs} is directories we build using the target tools.
configdirs=`echo ${host_libs} ${host_tools}`
target_configdirs=`echo ${target_libraries} ${target_tools}`
build_configdirs=`echo ${build_libs} ${build_tools}`

m4_divert_text([PARSE_ARGS],
[ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
])

################################################################################

srcname="gnu development package"

# This gets set non-empty for some net releases of packages.
appdirs=""

# Define is_cross_compiler to save on calls to 'test'.
is_cross_compiler=
if test x"${host}" = x"${target}" ; then
  is_cross_compiler=no
else
  is_cross_compiler=yes
fi	

# Find the build and target subdir names.
GCC_TOPLEV_SUBDIRS
# Be sure to cover against remnants of an in-tree build.
if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
  AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
Use a pristine source tree when building in a separate tree])
fi

# Skipdirs are removed silently.
skipdirs=
# Noconfigdirs are removed loudly.
noconfigdirs=""

use_gnu_ld=
# Make sure we don't let GNU ld be added if we didn't want it.
if test x$with_gnu_ld = xno ; then
  use_gnu_ld=no
  noconfigdirs="$noconfigdirs ld gold"
fi

use_gnu_as=
# Make sure we don't let GNU as be added if we didn't want it.
if test x$with_gnu_as = xno ; then
  use_gnu_as=no
  noconfigdirs="$noconfigdirs gas"
fi

use_included_zlib=
# Make sure we don't let ZLIB be added if we didn't want it.
if test x$with_system_zlib = xyes ; then
  use_included_zlib=no
  noconfigdirs="$noconfigdirs zlib"
fi

# some tools are so dependent upon X11 that if we're not building with X, 
# it's not even worth trying to configure, much less build, that tool.

case ${with_x} in
  yes | "") ;; # the default value for this tree is that X11 is available
  no)
    skipdirs="${skipdirs} tk itcl libgui"
    # We won't be able to build gdbtk without X.
    enable_gdbtk=no 
    ;;
  *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
esac

# Some tools are only suitable for building in a "native" situation.
# Remove these if host!=target.  
native_only="autoconf automake libtool fileutils find gawk gettext gzip hello indent m4 rcs recode sed shellutils tar textutils uudecode wdiff target-groff guile perl time ash bash bzip2 prms gnuserv target-gperf"

# Similarly, some are only suitable for cross toolchains.
# Remove these if host=target.
cross_only="target-libgloss target-newlib target-opcodes"

case $is_cross_compiler in
  no) skipdirs="${skipdirs} ${cross_only}" ;;
  yes) skipdirs="${skipdirs} ${native_only}" ;;
esac

# If both --with-headers and --with-libs are specified, default to
# --without-newlib.
if test x"${with_headers}" != x && test x"${with_headers}" != xno \
   && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
  if test x"${with_newlib}" = x ; then
    with_newlib=no
  fi
fi

# Recognize --with-newlib/--without-newlib.
case ${with_newlib} in
  no) skipdirs="${skipdirs} target-newlib" ;;
  yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
esac

# Handle --enable-gold.

AC_ARG_ENABLE(gold,
[  --enable-gold           use gold instead of ld],
ENABLE_GOLD=$enableval,
ENABLE_GOLD=no)
if test "${ENABLE_GOLD}" = "yes"; then
  # Check for ELF target.
  is_elf=no
  case "${target}" in
    *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
    | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
    | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-solaris2* | *-*-nto*)
      case "${target}" in
        *-*-linux*aout* | *-*-linux*oldld*)
          ;;
        *)
          is_elf=yes
          ;;
      esac
  esac

  if test "$is_elf" = "yes"; then
    # Check for target supported by gold.
    case "${target}" in
      i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-*)
        configdirs="`echo " ${configdirs} " | sed -e 's/ ld / gold /'`"
        ;;
    esac
  fi
fi

# Configure extra directories which are host specific

case "${host}" in
  *-cygwin*)
    configdirs="$configdirs libtermcap" ;;
esac

# A target can indicate whether a language isn't supported for some reason.
# Only spaces may be used in this macro; not newlines or tabs.
unsupported_languages=

# Remove more programs from consideration, based on the host or 
# target this usually means that a port of the program doesn't
# exist yet.

case "${host}" in
  hppa*64*-*-*)
    noconfigdirs="$noconfigdirs byacc"
    ;;
  i[[3456789]]86-*-vsta)
    noconfigdirs="$noconfigdirs tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl itcl gnuserv gettext"
    ;;
  i[[3456789]]86-*-go32* | i[[3456789]]86-*-msdosdjgpp*)
    noconfigdirs="$noconfigdirs tcl tk expect dejagnu send-pr uudecode guile itcl gnuserv libffi"
    ;;
  x86_64-*-mingw*)
    noconfigdirs="$noconfigdirs expect dejagnu autoconf automake send-pr rcs guile perl texinfo libtool newlib"
    ;;
  i[[3456789]]86-*-mingw32*)
    # noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl itcl gnuserv"
    noconfigdirs="$noconfigdirs expect dejagnu autoconf automake send-pr rcs guile perl texinfo libtool newlib"
    ;;
  i[[3456789]]86-*-beos*)
    noconfigdirs="$noconfigdirs tk itcl libgui gdb"
    ;;
  *-*-cygwin*)
    noconfigdirs="$noconfigdirs autoconf automake send-pr rcs guile perl"
    ;;
  *-*-netbsd*)
    noconfigdirs="$noconfigdirs rcs"
    ;;
  ppc*-*-pe)
    noconfigdirs="$noconfigdirs patch diff make tk tcl expect dejagnu autoconf automake texinfo bison send-pr gprof rcs guile perl itcl gnuserv"
    ;;
  powerpc-*-beos*)
    noconfigdirs="$noconfigdirs tk itcl libgui gdb dejagnu readline"
    ;;
esac


AC_ARG_ENABLE(libada,
[  --enable-libada         build libada directory],
ENABLE_LIBADA=$enableval,
ENABLE_LIBADA=yes)
if test "${ENABLE_LIBADA}" != "yes" ; then
  noconfigdirs="$noconfigdirs gnattools"
fi

AC_ARG_ENABLE(libssp,
[  --enable-libssp         build libssp directory],
ENABLE_LIBSSP=$enableval,
ENABLE_LIBSSP=yes)

# Save it here so that, even in case of --enable-libgcj, if the Java
# front-end isn't enabled, we still get libgcj disabled.
libgcj_saved=$libgcj
case $enable_libgcj in
yes)
  # If we reset it here, it won't get added to noconfigdirs in the
  # target-specific build rules, so it will be forcibly enabled
  # (unless the Java language itself isn't enabled).
  libgcj=
  ;;
no)
  # Make sure we get it printed in the list of not supported target libs.
  noconfigdirs="$noconfigdirs ${libgcj}"
  ;;
esac


# Disable libmudflap on some systems.
if test x$enable_libmudflap = x ; then
    case "${target}" in
    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux* | *-*-kopensolaris*-gnu)
        # Enable libmudflap by default in GNU and friends.
	;;
    *-*-freebsd*)
        # Enable libmudflap by default in FreeBSD.
	;;
    *)
        # Disable it by default everywhere else.
	noconfigdirs="$noconfigdirs target-libmudflap"
	;;
    esac
fi

# Disable libgomp on non POSIX hosted systems.
if test x$enable_libgomp = x ; then
    # Enable libgomp by default on hosted POSIX systems.
    case "${target}" in
    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
	;;
    *-*-netbsd* | *-*-freebsd* | *-*-openbsd*)
	;;
    *-*-solaris2* | *-*-sysv4* | *-*-irix6* | *-*-osf* | *-*-hpux11*)
	;;
    *-*-darwin* | *-*-aix*)
	;;
    *)
	noconfigdirs="$noconfigdirs target-libgomp"
	;;
    esac
fi

# Default libgloss CPU subdirectory.
libgloss_dir="$target_cpu"

case "${target}" in
  *-*-chorusos)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  powerpc-*-darwin*)
    noconfigdirs="$noconfigdirs ld gas gdb gprof"
    noconfigdirs="$noconfigdirs sim target-rda"
    ;;
  i[[3456789]]86-*-darwin*)
    noconfigdirs="$noconfigdirs ld gprof"
    noconfigdirs="$noconfigdirs sim target-rda"
    ;;
  x86_64-*-darwin[[912]]*)
    noconfigdirs="$noconfigdirs ld gas gprof"
    noconfigdirs="$noconfigdirs sim target-rda"
    ;;
  *-*-darwin*)
    noconfigdirs="$noconfigdirs ld gas gdb gprof"
    noconfigdirs="$noconfigdirs sim target-rda"
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  *-*-freebsd[[12]] | *-*-freebsd[[12]].* | *-*-freebsd*aout*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  *-*-freebsd*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
	&& test -f /usr/local/include/gmp.h; then
      with_gmp=/usr/local
    fi

    # Skip some stuff that's unsupported on some FreeBSD configurations.
    case "${target}" in
      i*86-*-*) ;;
      alpha*-*-*) ;;
      *)
	noconfigdirs="$noconfigdirs ${libgcj}"
	;;
    esac
    ;;
  *-*-kaos*)
    # Remove unsupported stuff on all kaOS configurations.
    skipdirs="target-libiberty ${libgcj} target-libstdc++-v3 target-librx"
    skipdirs="$skipdirs target-libobjc target-examples target-groff target-gperf"
    skipdirs="$skipdirs zlib fastjar target-libjava target-boehm-gc target-zlib"
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  *-*-netbsd*)
    # Skip some stuff on all NetBSD configurations.
    noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss"

    # Skip some stuff that's unsupported on some NetBSD configurations.
    case "${target}" in
      i*86-*-netbsdelf*) ;;
      arm*-*-netbsdelf*) ;;
      *)
	noconfigdirs="$noconfigdirs ${libgcj}"
	;;
    esac
    ;;
  *-*-netware*)
    noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss ${libgcj} target-libmudflap"
    ;;
  *-*-rtems*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
    # The tpf target doesn't support gdb yet.
  *-*-tpf*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss target-libiberty ${libgcj} target-libmudflap gdb tcl tk libgui itcl"
    ;;
  *-*-uclinux*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss target-rda ${libgcj}"
    ;;
  *-*-vxworks*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss target-libiberty target-libstdc++-v3 ${libgcj}"
    ;;
  alpha*-dec-osf*)
    # ld works, but does not support shared libraries.
    # newlib is not 64 bit ready.  I'm not sure about fileutils.
    # gas doesn't generate exception information.
    noconfigdirs="$noconfigdirs gas ld fileutils target-newlib target-libgloss"
    ;;
  alpha*-*-*vms*)
    noconfigdirs="$noconfigdirs gdb ld target-newlib target-libgloss ${libgcj}"
    ;;
  alpha*-*-linux*)
    # newlib is not 64 bit ready
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  alpha*-*-*)
    # newlib is not 64 bit ready
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  am33_2.0-*-linux*)
    noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
    ;;
  sh-*-linux*)
    noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss"
    ;;    
  sh*-*-pe|mips*-*-pe|*arm-wince-pe)
    noconfigdirs="$noconfigdirs ${libgcj}"
    noconfigdirs="$noconfigdirs target-examples"
    noconfigdirs="$noconfigdirs target-libiberty texinfo send-pr"
    noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
    noconfigdirs="$noconfigdirs expect dejagnu"
    # the C++ libraries don't build on top of CE's C libraries
    noconfigdirs="$noconfigdirs target-libstdc++-v3"
    noconfigdirs="$noconfigdirs target-newlib"
    case "${host}" in
      *-*-cygwin*) ;; # keep gdb and readline
      *) noconfigdirs="$noconfigdirs gdb readline"
	 ;;
    esac
    libgloss_dir=wince
    ;;
  arc-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  arm-semi-aof )
    ;;
  arm-*-coff | strongarm-*-coff | xscale-*-coff)
    noconfigdirs="$noconfigdirs ${libgcj}"
    libgloss_dir=arm
    ;;
  arm-*-elf* | strongarm-*-elf* | xscale-*-elf* | arm*-*-eabi* )
    noconfigdirs="$noconfigdirs target-libffi target-qthreads"
    libgloss_dir=arm
    ;;
  arm*-*-linux-gnueabi)
    noconfigdirs="$noconfigdirs target-qthreads"
    case ${with_newlib} in
      no) noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    esac
    libgloss_dir=arm
    ;;
  arm*-*-symbianelf*)
    noconfigdirs="$noconfigdirs ${libgcj} target-libiberty"
    libgloss_dir=arm
    ;;
  arm-*-pe*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  thumb-*-coff)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  thumb-*-elf)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  thumb-*-pe)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  arm-*-riscix*)
    noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
    ;;
  avr-*-*)
    noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj} target-libssp"
    ;;
  bfin-*-*)
    unsupported_languages="$unsupported_languages java"
    noconfigdirs="$noconfigdirs target-boehm-gc gdb"
    if test x${is_cross_compiler} != xno ; then
      target_configdirs="${target_configdirs} target-bsp target-cygmon"
    fi
    ;;
  c4x-*-* | tic4x-*-*)
    noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
    ;;
  c54x*-*-* | tic54x-*-*)
    noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj} gcc gdb newlib"
    ;;
  cr16-*-*)
    noconfigdirs="$noconfigdirs ${libgcj} gdb"
    ;;
  cris-*-* | crisv32-*-*)
    unsupported_languages="$unsupported_languages java"
    case "${target}" in
      *-*-aout)
	unsupported_languages="$unsupported_languages fortran"
	noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
      *-*-elf)
	noconfigdirs="$noconfigdirs target-boehm-gc";;
      *-*-linux*)
	noconfigdirs="$noconfigdirs target-newlib target-libgloss";;
      *)
	unsupported_languages="$unsupported_languages fortran"
	noconfigdirs="$noconfigdirs ${libgcj} target-newlib target-libgloss";;
    esac
    libgloss_dir=cris
    ;;
  crx-*-*)
    noconfigdirs="$noconfigdirs target-libstdc++-v3 target-mudflap ${libgcj}"
    ;;
  d10v-*-*)
    noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
    ;;
  d30v-*-*)
    noconfigdirs="$noconfigdirs ${libgcj} gdb"
    ;;
  ep9312-*-elf | ep9312-*-coff)
    libgloss_dir=arm
    ;;
  fr30-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj} gdb"
    ;;
  frv-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  moxie-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    noconfigdirs="$noconfigdirs gprof"
    ;;
  h8300*-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  h8500-*-*)
    noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
    ;;
  hppa1.1-*-osf* | hppa1.1-*-bsd* )
    ;;
  hppa*64*-*-linux* | parisc*64*-*-linux*)
    # In this case, it's because the hppa64-linux target is for
    # the kernel only at this point and has no libc, and thus no
    # headers, crt*.o, etc., all of which are needed by these.
    noconfigdirs="$noconfigdirs target-zlib"
    ;;
  parisc*-*-linux* | hppa*-*-linux*)
    ;;
  hppa*-*-*elf* | \
  hppa*-*-lites* | \
  hppa*-*-openbsd* | \
  hppa*64*-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  hppa*-hp-hpux11*)
    noconfigdirs="$noconfigdirs ld shellutils"
    ;;
  hppa*-*-pro*)
    libgloss_dir=pa
    ;;
  hppa*-*-*)
    # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
    # build on HP-UX 10.20.
    noconfigdirs="$noconfigdirs ld shellutils ${libgcj}"
    ;;
  i960-*-*)
    noconfigdirs="$noconfigdirs ${libgcj} gdb"
    ;;
  ia64*-*-elf*)
    # No gdb support yet.
    noconfigdirs="$noconfigdirs readline mmalloc libgui itcl gdb"
    ;;
  ia64*-**-hpux*)
    # No gdb or ld support yet.
    noconfigdirs="$noconfigdirs ${libgcj} readline mmalloc libgui itcl gdb ld"
    ;;
  ia64*-*-*vms*)
    # No gdb or ld support yet.
    noconfigdirs="$noconfigdirs ${libgcj} tix readline mmalloc libgui itcl gdb ld"
    ;;
  i370-*-opened*)
    ;;
  i[[3456789]]86-*-coff | i[[3456789]]86-*-elf)
    noconfigdirs="$noconfigdirs ${libgcj}"
    libgloss_dir=i386
    ;;
  i[[3456789]]86-*-linux*)
    # The GCC port for glibc1 has no MD_FALLBACK_FRAME_STATE_FOR, so let's
    # not build java stuff by default.
    case "${target}" in
      *-*-*libc1*)
	noconfigdirs="$noconfigdirs ${libgcj}";;
    esac

    # This section makes it possible to build newlib natively on linux.
    # If we are using a cross compiler then don't configure newlib.
    if test x${is_cross_compiler} != xno ; then
      noconfigdirs="$noconfigdirs target-newlib"
    fi
    noconfigdirs="$noconfigdirs target-libgloss"
    # If we are not using a cross compiler, do configure newlib.
    # Note however, that newlib will only be configured in this situation
    # if the --with-newlib option has been given, because otherwise
    # 'target-newlib' will appear in skipdirs.
    ;;
  i[[3456789]]86-w64-mingw*)
    noconfigdirs="$noconfigdirs expect target-libgloss target-newlib ${libgcj}"
    ;;
  i[[3456789]]86-*-mingw*)
    target_configdirs="$target_configdirs target-winsup"
    noconfigdirs="$noconfigdirs expect target-libgloss target-newlib ${libgcj}"
    ;;
  x86_64-*-mingw*)
    noconfigdirs="$noconfigdirs expect target-libgloss target-newlib ${libgcj}"
    ;;
  *-*-cygwin*)
    target_configdirs="$target_configdirs target-libtermcap target-winsup"
    noconfigdirs="$noconfigdirs target-gperf target-libgloss"
    # always build newlib if winsup directory is present.
    if test -d "$srcdir/winsup/cygwin"; then
      skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
    elif test -d "$srcdir/newlib"; then
      echo "Warning: winsup/cygwin is missing so newlib can't be built."
    fi
    ;;
  i[[3456789]]86-moss-msdos | i[[3456789]]86-*-moss* | \
  i[[3456789]]86-*-uwin* | i[[3456789]]86-*-interix* )
    ;;
  i[[3456789]]86-*-pe)
    noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
    ;;
  i[[3456789]]86-*-sco3.2v5*)
    # The linker does not yet know about weak symbols in COFF,
    # and is not configured to handle mixed ELF and COFF.
    noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
    ;;
  i[[3456789]]86-*-sco*)
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  i[[3456789]]86-*-solaris2*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  i[[3456789]]86-*-sysv4*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  i[[3456789]]86-*-beos*)
    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
    ;;
  i[[3456789]]86-*-rdos*)
    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
    ;;
  m32r-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
    noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
    libgloss_dir=m68hc11
    ;;
  m68k-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  m68k-*-coff*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  m68*-*-* | fido-*-*)
    libgloss_dir=m68k
    ;;
  mcore-*-pe*)
  # The EPOC C++ environment does not support exceptions or rtti,
  # and so building libstdc++-v3 tends not to always work.
    noconfigdirs="$noconfigdirs target-libstdc++-v3"
    ;;
  mmix-*-*)
    noconfigdirs="$noconfigdirs target-libffi target-boehm-gc gdb libgloss"
    unsupported_languages="$unsupported_languages fortran java"
    ;;
  mn10200-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  mn10300-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  mt-*-*)
    noconfigdirs="$noconfigdirs sim"
    ;;
  powerpc-*-aix*)
    # copied from rs6000-*-* entry
    noconfigdirs="$noconfigdirs gprof target-libgloss target-libssp target-newlib ${libgcj}"
    ;;
  powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
    target_configdirs="$target_configdirs target-winsup"
    noconfigdirs="$noconfigdirs gdb tcl tk make expect target-libgloss itcl gnuserv ${libgcj}"
    # always build newlib.
    skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
    ;;
    # This is temporary until we can link against shared libraries
  powerpcle-*-solaris*)
    noconfigdirs="$noconfigdirs gdb sim make tcl tk expect itcl gnuserv ${libgcj}"
    libgloss_dir=rs6000
    ;;
  powerpc-*-beos*)
    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
    ;;
  powerpc-*-eabi)
    noconfigdirs="$noconfigdirs ${libgcj}"
    libgloss_dir=rs6000
    ;;
  powerpc-*-eabi* | powerpcle-*-eabi* | powerpc-*-rtems* )
    libgloss_dir=rs6000
    ;;
  rs6000-*-lynxos*)
    noconfigdirs="$noconfigdirs target-newlib gprof ${libgcj}"
    ;;
  rs6000-*-aix*)
    noconfigdirs="$noconfigdirs gprof target-libgloss target-libssp target-newlib ${libgcj}"
    ;;
  rs6000-*-*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    ;;
  m68k-apollo-*)
    noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss ${libgcj}"
    ;;
  microblaze*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    ;;
  mips*-sde-elf*)
    skipdirs="$skipdirs target-libiberty"
    noconfigdirs="$noconfigdirs ${libgcj}"
    if test x$with_newlib = xyes; then
      noconfigdirs="$noconfigdirs gprof"
    fi
    libgloss_dir=mips
    ;;
  mips*-*-irix5*)
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  mips*-*-irix6*)
    # Linking libjava exceeds command-line length limits on at least
    # IRIX 6.2, but not on IRIX 6.5.
    # Also, boehm-gc won't build on IRIX 6.5, according to Jeffrey Oldham
    # <oldham@codesourcery.com>
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  mips*-*-bsd*)
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  mips*-*-linux*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  mips*-*-*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    libgloss_dir=mips
    ;;
  romp-*-*)
    noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss ${libgcj}"
    ;;
  sh-*-* | sh64-*-*)
    case "${host}" in
      i[[3456789]]86-*-vsta) ;; # don't add gprof back in
      i[[3456789]]86-*-go32*) ;; # don't add gprof back in
      i[[3456789]]86-*-msdosdjgpp*) ;; # don't add gprof back in
      *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
    esac
    case "${target}" in
      sh*-*-elf)
         noconfigdirs="$noconfigdirs ${libgcj}" ;;
      *)
         noconfigdirs="$noconfigdirs target-libgloss ${libgcj}" ;;
    esac
    ;;
  sparclet-*-aout* | sparc86x-*-*)
    libgloss_dir=sparc
    ;;
  sparc-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  sparc64-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    libgloss_dir=sparc
    ;;
  sparclite-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    libgloss_dir=sparc
    ;;
  sparc-*-sunos4*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    if test x${is_cross_compiler} != xno ; then
           noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
    else
           use_gnu_ld=no
    fi
    ;;
  sparc-*-solaris2.[[0-6]] | sparc-*-solaris2.[[0-6]].*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
    ;;
  v810-*-*)
    noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libstdc++-v3 opcodes target-libgloss ${libgcj}"
    ;;
  v850-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  v850e-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  v850ea-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  vax-*-vms)
    noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes target-libgloss ${libgcj}"
    ;;
  vax-*-*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  xtensa*-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  ip2k-*-*)
    noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
    ;;
  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  *-*-lynxos*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;; 
  *-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
esac

# If we aren't building newlib, then don't build libgloss, since libgloss
# depends upon some newlib header files.
case "${noconfigdirs}" in
  *target-libgloss*) ;;
  *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
esac

# Work in distributions that contain no compiler tools, like Autoconf.
tentative_cc=""
host_makefile_frag=/dev/null
if test -d ${srcdir}/config ; then
case "${host}" in
  m68k-hp-hpux*)
    # Avoid "too much defining" errors from HPUX compiler.
    tentative_cc="cc -Wp,-H256000"
    # If "ar" in $PATH is GNU ar, the symbol table may need rebuilding.
    # If it's HP/UX ar, this should be harmless.
    RANLIB="ar ts"
    ;;
  m68k-apollo-sysv*)
    tentative_cc="cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DUSG"
    ;;
  m68k-apollo-bsd*)
    #None of the Apollo compilers can compile gas or binutils.  The preprocessor
    # chokes on bfd, the compiler won't let you assign integers to enums, and
    # other problems.  Defining CC to gcc is a questionable way to say "don't use
    # the apollo compiler" (the preferred version of GCC could be called cc,
    # or whatever), but I'm not sure leaving CC as cc is any better...
    #CC=cc -A ansi -A runtype,any -A systype,any -U__STDC__ -DNO_STDARG
    # Used to have BISON=yacc.