configure.in

#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998,
#   1999, 2000, 2001, 2002 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 2 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; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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

AC_INIT(move-if-change)
AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM

sinclude(config/acx.m4)

# clear some things potentially inherited from environment.

enable_threads=no
enable_shared=no
enable_libstdcxx_v3=yes
floating_point=default
gas=default
x11=default

### 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}

## this is a little touchy and won't always work, but...
##
## if the argv[[0]] starts with a slash then it is an absolute name that can (and
## must) be used as is.
##
## otherwise, if argv[[0]] has no slash in it, we can assume that it is on the
## path.  Since PATH might include "." we also add `pwd` to the end of PATH.
##

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.
TOPLEVEL_CONFIGURE_ARGUMENTS="$progname $@"
export TOPLEVEL_CONFIGURE_ARGUMENTS

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

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

topsrcdir=$srcpwd

extra_host_args=
# Define the trigger file to make sure configure will re-run whenever
# the gcc version number changes.
if test "${with_gcc_version_trigger+set}" = set ; then
  gcc_version_trigger="$with_gcc_version_trigger"
  gcc_version=`grep version_string ${with_gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
else
  # If gcc's sources are available, define the trigger file.
  if test -f ${topsrcdir}/gcc/version.c ; then
    gcc_version_trigger=${topsrcdir}/gcc/version.c
    gcc_version=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
    case "$ac_configure_args" in
      *--with-gcc-version-trigger=$gcc_version_trigger* )
        ;;
      * )
        # Add to all subconfigure arguments: build, host, and target.
        ac_configure_args="--with-gcc-version-trigger=$gcc_version_trigger $ac_configure_args"
        ;;
    esac
  fi
fi

### 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 libraries are used by various programs built for the host environment
#
host_libs="intl mmalloc libiberty opcodes bfd readline db tcl tk itcl tix libgui zlib"

libstdcxx_version="target-libstdc++-v3"

# 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.
host_tools="texinfo byacc flex bison binutils gas ld gcc sid sim gdb make patch prms send-pr gprof etc expect dejagnu ash bash bzip2 m4 autoconf automake libtool grep diff rcs fileutils shellutils time textutils wdiff find uudecode hello tar gzip indent recode release sed utils guile perl gawk findutils snavigator gettext zip fastjar"

# libgcj represents the runtime libraries only used by gcj.
libgcj="target-libffi \
	target-boehm-gc \
	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_libs="target-libiberty \
		target-libgloss \
		target-newlib \
		${libstdcxx_version} \
		target-libf2c \
		${libgcj}
		target-libobjc"

# these tools are built using the target libs, and are intended to run only
# in the target environment
#
# note: any program that *uses* libraries that are in the "target_libs"
# 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_libs} ${target_tools}`

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

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	

# We always want to use the same name for this directory, so that dejagnu
# can reliably find it.
target_subdir=${target_alias}

if test ! -d ${target_subdir} ; then
  if mkdir ${target_subdir} ; then true
  else
    echo "'*** could not make ${PWD=`${PWDCMD-pwd}`}/${target_subdir}" 1>&2
    exit 1
  fi
fi

build_prefix=build-
build_subdir=${build_prefix}${build_alias}

if test x"${build_alias}" != x"${host}" ; then
  if test ! -d ${build_subdir} ; then
    if mkdir ${build_subdir} ; then true
    else
      echo "'*** could not make ${PWD=`${PWDCMD-pwd}`}/${build_subdir}" 1>&2
      exit 1
    fi
  fi
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"
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

# 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 tix 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 grep gzip hello indent m4 rcs recode sed shellutils tar textutils uudecode wdiff gprof target-groff guile perl time ash bash bzip2 prms snavigator 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_libs}" != x ; 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

# Configure extra directories which are host specific

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

# 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[[3456]]86-*-vsta)
    noconfigdirs="tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl itcl tix db snavigator gnuserv gettext"
    ;;
  i[[3456]]86-*-go32* | i[[3456]]86-*-msdosdjgpp*)
    noconfigdirs="tcl tk expect dejagnu send-pr uudecode guile itcl tix db snavigator gnuserv libffi"
	;;
  i[[3456]]86-*-mingw32*)
    # noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl itcl tix db snavigator gnuserv"
     noconfigdirs="expect dejagnu autoconf automake send-pr rcs guile perl texinfo libtool"
	;;
  i[[3456]]86-*-beos*)
     noconfigdirs="$noconfigdirs tk itcl tix libgui gdb"
     ;;
  *-*-cygwin*)
     noconfigdirs="autoconf automake send-pr rcs guile perl"
    ;;
  *-*-netbsd*)
    noconfigdirs="rcs"
    ;;
  ppc*-*-pe)
     noconfigdirs="patch diff make tk tcl expect dejagnu autoconf automake texinfo bison send-pr gprof rcs guile perl itcl tix db snavigator gnuserv"
    ;;
  powerpc-*-beos*)
    noconfigdirs="$noconfigdirs tk itcl tix libgui gdb dejagnu readline"
    ;;
  *-*-darwin*)
    noconfigdirs="$noconfigdirs tk itcl tix libgui"
    ;;
esac

# 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

case "${target}" in
  *-*-chorusos)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  *-*-freebsd[[12]] | *-*-freebsd[[12]].* | *-*-freebsd*aout*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  *-*-netbsd*)
    # Skip some stuff on all NetBSD configurations.
    noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss"

    # Skip some stuff that's unsupported on some NetBSD configurations.
    case "${target}" in
      i*86-*-netbsdelf*) ;;
      *)
	noconfigdirs="$noconfigdirs ${libgcj}"
	;;
    esac
    ;;
  *-*-netware)
    noconfigdirs="$noconfigdirs ${libstdcxx_version} target-newlib target-libiberty target-libgloss ${libgcj}"
    ;;
  *-*-rtems*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    case ${target} in
	h8300*-*-* | h8500-*-*)
	  noconfigdirs="$noconfigdirs target-libf2c"
          ;;
        *) ;;
    esac
    ;;
  *-*-vxworks*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  alpha*-dec-osf*)
    # ld works, but does not support shared libraries.
    # newlib is not 64 bit ready.  I'm not sure about fileutils.
    # gas doesn't generate exception information.
    noconfigdirs="$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*-*-freebsd*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  alpha*-*-*)
    # newlib is not 64 bit ready
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  sh-*-linux*)
    noconfigdirs="$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 tix tk itcl libgui sim"
    noconfigdirs="$noconfigdirs expect dejagnu"
    # the C++ libraries don't build on top of CE's C libraries
    noconfigdirs="$noconfigdirs ${libstdcxx_version}"
    noconfigdirs="$noconfigdirs target-newlib"
    case "${host}" in
      *-*-cygwin*) ;; # keep gdb and readline
      *) noconfigdirs="$noconfigdirs gdb readline ${libstdcxx_version}"
	 ;;
    esac
    ;;
  arc-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  arm-*-coff | strongarm-*-coff | xscale-*-coff)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  arm-*-elf* | strongarm-*-elf* | xscale-*-elf*)
    noconfigdirs="$noconfigdirs target-libffi target-qthreads"
    ;;
  arm-*-pe*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  arm-*-oabi*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  thumb-*-coff)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  thumb-*-elf)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  thumb-*-oabi)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  thumb-*-pe)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  arm-*-riscix*)
    noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
    ;;
  avr-*-*)
    noconfigdirs="$noconfigdirs target-libiberty ${libstdcxx_version} ${libgcj}"
    ;;
  c4x-*-* | tic4x-*-*)
    noconfigdirs="$noconfigdirs ${libstdcxx_version} target-libgloss ${libgcj}"
    ;;
  c54x*-*-* | tic54x-*-*)
    noconfigdirs="$noconfigdirs ${libstdcxx_version} target-libgloss ${libgcj} gcc gdb newlib"
    ;;
  cris-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  d10v-*-*)
    noconfigdirs="$noconfigdirs ${libstdcxx_version} target-libgloss ${libgcj}"
    ;;
  d30v-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  fr30-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  frv-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  h8300*-*-*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  h8500-*-*)
    noconfigdirs="$noconfigdirs ${libstdcxx_version} target-libgloss ${libgcj} target-libf2c"
    ;;
  hppa*64*-*-linux* | parisc*64*-*-linux*)
    # In this case, it's because the hppa64-linux target is for
    # the kernel only at this point and has no libc, and thus no
    # headers, crt*.o, etc., all of which are needed by these.
    noconfigdirs="$noconfigdirs target-zlib"
    ;;
  hppa*-*-*elf* | \
  parisc*-*-linux* | hppa*-*-linux* | \
  hppa*-*-lites* | \
  hppa*-*-openbsd* | \
  hppa*64*-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    # Do configure ld/binutils/gas for this case.
    ;;
  hppa*-*-*)
    # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
    # build on HP-UX 10.20.
    noconfigdirs="$noconfigdirs ld shellutils ${libgcj}"
    ;;
  ia64*-*-elf*)
    # No gdb support yet.
    noconfigdirs="$noconfigdirs tix readline mmalloc libgui itcl gdb"
    ;;
  ia64*-**-hpux*)
    # No gdb or ld support yet.
    noconfigdirs="$noconfigdirs tix readline mmalloc libgui itcl gdb ld"
    ;;
  i[[3456]]86-*-coff | i[[3456]]86-*-elf)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  i[[34567]]86-*-freebsd*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  i[[3456]]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="$noconfigdirs target-libgloss"
    # If we are not using a cross compiler, do configure newlib.
    # Note however, that newlib will only be configured in this situation
    # if the --with-newlib option has been given, because otherwise
    # 'target-newlib' will appear in skipdirs.
    ;;
  i[[3456]]86-*-mingw32*)
    target_configdirs="$target_configdirs target-mingw"
    noconfigdirs="$noconfigdirs expect target-libgloss ${libgcj}"

    # Can't build gdb for mingw32 if not native.
    case "${host}" in
      i[[3456]]86-*-mingw32) ;; # keep gdb tcl tk expect etc.
      *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl tix db snavigator gnuserv"
         ;;
    esac
    ;;    
  *-*-cygwin*)
    target_configdirs="$target_configdirs target-libtermcap target-winsup"
    noconfigdirs="$noconfigdirs target-gperf target-libgloss ${libgcj}"
    # always build newlib.
    skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`

    # Can't build gdb for Cygwin if not native.
    case "${host}" in
      *-*-cygwin*) ;; # keep gdb tcl tk expect etc.
      *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl tix libgui db snavigator gnuserv"
         ;;
    esac
    ;;    
  i[[3456]]86-*-pe)
    noconfigdirs="$noconfigdirs ${libstdcxx_version} target-libgloss ${libgcj}"
    ;;
  i[[3456]]86-*-sco3.2v5*)
    # The linker does not yet know about weak symbols in COFF,
    # and is not configured to handle mixed ELF and COFF.
    noconfigdirs="$noconfigdirs ld target-libgloss ${libgcj}"
    ;;
  i[[3456]]86-*-sco*)
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  i[[3456]]86-*-solaris2*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  i[[3456]]86-*-sysv4*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  i[[3456]]86-*-beos*)
     noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
     ;;
  m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
    noconfigdirs="$noconfigdirs target-libiberty ${libstdcxx_version} ${libgcj}"
    ;;
  m68k-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  m68k-*-coff*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  mcore-*-pe*)
  # The EPOC C++ environment does not support exceptions or rtti,
  # and so building libstdc++-v3 tends not to always work.
    noconfigdirs="$noconfigdirs target-libstdc++-v3"
    ;;
  mmix-*-*)
    noconfigdirs="$noconfigdirs ${libgcj} gdb libgloss"
    ;;
  mn10200-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  mn10300-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  powerpc-*-aix*)
    # copied from rs6000-*-* entry
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
    target_configdirs="$target_configdirs target-winsup"
    noconfigdirs="$noconfigdirs gdb tcl tk make expect target-libgloss itcl tix db snavigator 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 tix db snavigator gnuserv ${libgcj}"
    ;;
  powerpc-*-beos*)
    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss ${libgcj}"
    ;;
  powerpc-*-darwin*)
    noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes gdb gprof ${libgcj}"
    ;;
  powerpc-*-eabi)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  powerpc64*-*-linux*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    # not yet ported.
    noconfigdirs="$noconfigdirs target-libffi"
    ;;
  rs6000-*-lynxos*)
    noconfigdirs="$noconfigdirs target-newlib gprof ${libgcj}"
    ;;
  rs6000-*-aix*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    ;;
  rs6000-*-*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    ;;
  m68k-apollo-*)
    noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss ${libgcj}"
    ;;
  mips*-*-irix5*)
    # The GNU linker does not support shared libraries.
    noconfigdirs="$noconfigdirs ld gprof target-libgloss ${libgcj}"
    ;;
  mips*-*-irix6*)
    # The GNU assembler does not support IRIX 6.
    # Linking libjava exceeds command-line length limits on at least
    # IRIX 6.2, but not on IRIX 6.5.
    # Also, boehm-gc won't build on IRIX 6.5, according to Jeffrey Oldham
    # <oldham@codesourcery.com>
    noconfigdirs="$noconfigdirs gas gprof target-libgloss ${libgcj}"
    ;;
  mips*-dec-bsd*)
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  mips*-*-bsd*)
    noconfigdirs="$noconfigdirs gprof target-libgloss ${libgcj}"
    ;;
  mipstx39-*-*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"   # same as generic mips
   ;;
  mips*-*-linux*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  mips*-*-*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    ;;
  romp-*-*)
    noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss ${libgcj}"
    ;;
  sh-*-*)
    case "${host}" in
      i[[3456]]86-*-vsta) ;; # don't add gprof back in
      i[[3456]]86-*-go32*) ;; # don't add gprof back in
      i[[3456]]86-*-msdosdjgpp*) ;; # don't add gprof back in
      *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
    esac
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  sh64-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  sparc-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  sparc64-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  sparclite-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  sparc-*-sunos4*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    if test x${is_cross_compiler} != xno ; then
           noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
    else
           use_gnu_ld=no
    fi
    ;;
  sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
    ;;
  v810-*-*)
    noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld ${libstdcxx_version} 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 ${libgcj}"
    ;;
  ip2k-*-*)
    noconfigdirs="$noconfigdirs target-libiberty ${libstdcxx_version} ${libgcj}"
    ;;
  *-*-linux*)
    noconfigdirs="$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

# Figure out what language subdirectories are present.
# Look if the user specified --enable-languages="..."; if not, use
# the environment variable $LANGUAGES if defined. $LANGUAGES might
# go away some day.
# NB:  embedded tabs in this IF block -- do not untabify
if test x"${enable_languages+set}" != xset; then
	if test x"${LANGUAGES+set}" = xset; then
		enable_languages="${LANGUAGES}"
		echo configure.in: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
	else
		enable_languages=all
	fi
else
	if test x"${enable_languages}" = x ||
	   test x"${enable_languages}" = xyes;
	then
		echo configure.in: --enable-languages needs at least one language argument 1>&2
		exit 1
	fi
fi
enable_languages=`echo "${enable_languages}" | sed -e 's/[[ 	,]][[ 	,]]*/,/g' -e 's/,$//'`

# First scan to see if an enabled language requires some other language.
# We assume that a given config-lang.in will list all the language
# front ends it requires, even if some are required indirectly.
for lang in ${srcdir}/gcc/*/config-lang.in ..
do
   case $lang in
    ..)
       ;;
    # The odd quoting in the next line works around
    # an apparent bug in bash 1.12 on linux.
    ${srcdir}/gcc/[[*]]/config-lang.in)
       ;;
    *)
       lang_alias=`sed -n -e 's,^language=[['"'"'"'"]]\(.*\)[["'"'"'"']].*$,\1,p' -e 's,^language=\([[^ 	]]*\).*$,\1,p' $lang`
       this_lang_requires=`sed -n -e 's,^lang_requires=[['"'"'"'"]]\(.*\)[["'"'"'"']].*$,\1,p' -e 's,^lang_requires=\([[^ 	]]*\).*$,\1,p' $lang`
       for other in $this_lang_requires
       do
	  case ,${enable_languages}, in
	   *,$other,*)
	      ;;
	   *,all,*)
	      ;;
	   *,$lang_alias,*)
	      echo " \`$other' language required by \`$lang_alias'; enabling" 1>&2
	      enable_languages="$enable_languages,$other"
	      ;;
	  esac
       done
       ;;
   esac
done

subdirs=
for lang in ${srcdir}/gcc/*/config-lang.in ..
do
	case $lang in
	..) ;;
	# The odd quoting in the next line works around
	# an apparent bug in bash 1.12 on linux.
	${srcdir}/gcc/[[*]]/config-lang.in) ;;
	*)
	  lang_alias=`sed -n -e 's,^language=[['"'"'"'"]]\(.*\)[["'"'"'"']].*$,\1,p' -e 's,^language=\([[^ 	]]*\).*$,\1,p' $lang`
	  this_lang_libs=`sed -n -e 's,^target_libs=[['"'"'"'"]]\(.*\)[["'"'"'"']].*$,\1,p' -e 's,^target_libs=\([[^ 	]]*\).*$,\1,p' $lang`
	  this_lang_dirs=`sed -n -e 's,^lang_dirs=[['"'"'"'"]]\(.*\)[["'"'"'"']].*$,\1,p' -e 's,^lang_dirs=\([[^ 	]]*\).*$,\1,p' $lang`
	  build_by_default=`sed -n -e 's,^build_by_default=[['"'"'"'"]]\(.*\)[["'"'"'"']].*$,\1,p' -e 's,^build_by_default=\([[^ 	]]*\).*$,\1,p' $lang`
	  if test "x$lang_alias" = x
	  then
		echo "$lang doesn't set \$language." 1>&2
		exit 1
	  fi
	  case ${build_by_default},${enable_languages}, in
	  *,$lang_alias,*) add_this_lang=yes ;;
	  no,*) add_this_lang=no ;;
	  *,all,*) add_this_lang=yes ;;
	  *) add_this_lang=no ;;
	  esac
	  if test x"${add_this_lang}" = xyes; then
	      eval target_libs='"$target_libs "'\"$this_lang_libs\"
	  else
	      eval noconfigdirs='"$noconfigdirs "'\"$this_lang_libs $this_lang_dirs\"
	  fi
	  ;;
	esac
done

# Remove the entries in $skipdirs and $noconfigdirs from $configdirs and
# $target_configdirs.
# If we have the source for $noconfigdirs entries, add them to $notsupp.

notsupp=""
for dir in . $skipdirs $noconfigdirs ; do
  dirname=`echo $dir | sed -e s/target-//g`
  if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
    configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
    if test -r $srcdir/$dirname/configure ; then
      if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
	true
      else
	notsupp="$notsupp $dir"
      fi
    fi
  fi
  if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
    target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
    if test -r $srcdir/$dirname/configure ; then
      if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
	true
      else
	notsupp="$notsupp $dir"
      fi
    fi
  fi
done

# Sometimes the tools are distributed with libiberty but with no other
# libraries.  In that case, we don't want to build target-libiberty.
if test -n "${target_configdirs}" ; then
  others=
  for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
    if test "$i" != "libiberty" ; then
      if test -r $srcdir/$i/configure ; then
	others=yes;
	break;
      fi
    fi
  done
  if test -z "${others}" ; then
    target_configdirs=
  fi
fi

# Deconfigure all subdirectories, in case we are changing the
# configuration from one where a subdirectory is supported to one where it
# is not.
if test -z "${norecursion}" && test -n "${configdirs}" ; then
  for i in `echo ${configdirs} | sed -e s/target-//g` ; do
    rm -f $i/Makefile
  done
fi
if test -z "${norecursion}" && test -n "${target_configdirs}" ; then
  for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
    rm -f ${target_subdir}/$i/Makefile
  done
fi

# Quietly strip out all directories which aren't configurable in this tree.
# This relies on all configurable subdirectories being autoconfiscated, which
# is now the case.
configdirs_all="$configdirs"
configdirs=
for i in ${configdirs_all} ; do
  if test -f ${srcdir}/$i/configure ; then
    configdirs="${configdirs} $i"
  fi
done
target_configdirs_all="$target_configdirs"
target_configdirs=
for i in ${target_configdirs_all} ; do
  j=`echo $i | sed -e s/target-//g` 
  if test -f ${srcdir}/$j/configure ; then
    target_configdirs="${target_configdirs} $i"
  fi
done

# Produce a warning message for the subdirs we can't configure.
# This isn't especially interesting in the Cygnus tree, but in the individual
# FSF releases, it's important to let people know when their machine isn't
# supported by the one or two programs in a package.

if test -n "${notsupp}" && test -z "${norecursion}" ; then
  # If $appdirs is non-empty, at least one of those directories must still
  # be configured, or we error out.  (E.g., if the gas release supports a
  # specified target in some subdirs but not the gas subdir, we shouldn't
  # pretend that all is well.)
  if test -n "$appdirs" ; then
    for dir in $appdirs ; do
      if test -r $dir/Makefile.in ; then
	if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
	  appdirs=""
	  break
	fi
	if echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
	  appdirs=""
	  break
	fi
      fi
    done
    if test -n "$appdirs" ; then
      echo "*** This configuration is not supported by this package." 1>&2
      exit 1
    fi
  fi
  # Okay, some application will build, or we don't care to check.  Still
  # notify of subdirs not getting built.
  echo "*** This configuration is not supported in the following subdirectories:" 1>&2
  echo "    ${notsupp}" 1>&2
  echo "    (Any other directories should still work fine.)" 1>&2
fi

case "$host" in
  *msdosdjgpp*)
    enable_gdbtk=no ;;
esac

copy_dirs=

# Handle --with-headers=XXX.  If the value is not "yes", the contents of
# the named directory are copied to $(tooldir)/sys-include.
if test x"${with_headers}" != x ; then
  if test x${is_cross_compiler} = xno ; then
    echo 1>&2 '***' --with-headers is only supported when cross compiling
    exit 1
  fi
  if test x"${with_headers}" != xyes ; then
    case "${exec_prefixoption}" in
    "") x=${prefix} ;;
    *) x=${exec_prefix} ;;
    esac
    copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/sys-include"
  fi
fi

# Handle --with-libs=XXX.  If the value is not "yes", the contents of
# the name directories are copied to $(tooldir)/lib.  Multiple directories
# are permitted.
if test x"${with_libs}" != x ; then
  if test x${is_cross_compiler} = xno ; then
    echo 1>&2 '***' --with-libs is only supported when cross compiling
    exit 1
  fi
  if test x"${with_libs}" != xyes ; then
    # Copy the libraries in reverse order, so that files in the first named
    # library override files in subsequent libraries.
    case "${exec_prefixoption}" in
    "") x=${prefix} ;;
    *) x=${exec_prefix} ;;
    esac
    for l in ${with_libs}; do
      copy_dirs="$l $x/${target_alias}/lib ${copy_dirs}"
    done
  fi
fi

# Handle ${copy_dirs}
set fnord ${copy_dirs}
shift
while test $# != 0 ; do
  if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
    :
  else
    echo Copying $1 to $2

    # Use the install script to create the directory and all required
    # parent directories.
    if test -d $2 ; then
      :
    else
      echo >config.temp
      ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
    fi

    # Copy the directory, assuming we have tar.