configure.ac

#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
#   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
#   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)
m4_include(config/elf.m4)
m4_include([libtool.m4])
m4_include([ltoptions.m4])
m4_include([ltsugar.m4])
m4_include([ltversion.m4])
m4_include([lt~obsolete.m4])
m4_include([config/cloog.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

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" may 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-libquadmath \
		target-libgfortran \
		target-boehm-gc \
		${libgcj} \
		target-libobjc \
		target-libada \
		target-libgo"

# 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.
#
target_tools="target-examples 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],
[case $srcdir in
  *" "*)
m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
    AC_MSG_ERROR([path to source, $srcdir, contains spaces])
m4_popdef([AS_MESSAGE_LOG_FD])dnl
    ;;
esac
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 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}" ;;
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, --enable-ld.
# --disable-gold [--enable-ld]
#     Build only ld.  Default option.
# --enable-gold [--enable-ld]
#     Build both gold and ld.  Install gold as "ld.gold", install ld
#     as "ld.bfd" and "ld".
# --enable-gold=default [--enable-ld]
#     Build both gold and ld.  Install gold as "ld.gold" and "ld",
#     install ld as "ld.bfd".
# --enable-gold[=default] --disable-ld
#     Build only gold, which is then installed as both "ld.gold" and "ld".
# --enable-gold --enable-ld=default
#     Build both gold (installed as "ld.gold") and ld (installed as "ld"
#     and ld.bfd).
#     In other words, ld is default
# --enable-gold=default --enable-ld=default
#     Error.

default_ld=
AC_ARG_ENABLE(gold,
[AS_HELP_STRING([[--enable-gold[=ARG]]],
		[build gold @<:@ARG={default,yes,no}@:>@])],
ENABLE_GOLD=$enableval,
ENABLE_GOLD=no)
case "${ENABLE_GOLD}" in
  yes|default)
    # Check for ELF target.
    is_elf=no
    case "${target}" in
      *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
      | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
      | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
      | *-*-solaris2* | *-*-nto*)
        case "${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="$configdirs gold"
	  if test x${ENABLE_GOLD} = xdefault; then
	    default_ld=gold
	  fi
	  ENABLE_GOLD=yes
          ;;
      esac
    fi
    ;;
  no)
    ;;
  *)
    AC_MSG_ERROR([invalid --enable-gold argument])
    ;;
esac

AC_ARG_ENABLE(ld,
[AS_HELP_STRING([[--enable-ld[=ARG]]],
		[build ld @<:@ARG={default,yes,no}@:>@])],
ENABLE_LD=$enableval,
ENABLE_LD=yes)

case "${ENABLE_LD}" in
  default)
    if test x${default_ld} != x; then
      AC_MSG_ERROR([either gold or ld can be the default ld])
    fi
    ;;
  yes)
    ;;
  no)
    if test x${ENABLE_GOLD} != xyes; then
      AC_MSG_WARN([neither ld nor gold are enabled])
    fi
    configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
    ;;
  *)
    AC_MSG_ERROR([invalid --enable-ld argument])
    ;;
esac

# 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 "${host}" in
  i[[3456789]]86-*-msdosdjgpp*)
    noconfigdirs="$noconfigdirs tcl tk itcl"
    ;;
esac


AC_ARG_ENABLE(libquadmath,
AS_HELP_STRING([--disable-libquadmath],
  [do not build libquadmath directory]),
ENABLE_LIBQUADMATH=$enableval,
ENABLE_LIBQUADMATH=yes)
if test "${ENABLE_LIBQUADMATH}" = "no" ; then
  noconfigdirs="$noconfigdirs target-libquadmath"
fi


AC_ARG_ENABLE(libquadmath-support,
AS_HELP_STRING([--disable-libquadmath-support],
  [disable libquadmath support for Fortran]),
ENABLE_LIBQUADMATH_SUPPORT=$enableval,
ENABLE_LIBQUADMATH_SUPPORT=yes)
enable_libquadmath_support=
if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
  enable_libquadmath_support=no
fi


AC_ARG_ENABLE(libada,
[AS_HELP_STRING([--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,
[AS_HELP_STRING([--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 $enable_libgcj in
yes)
  # If we reset it here, it won't get added to noconfigdirs in the
  # target-specific build rules, so it will be forcibly enabled
  # (unless the Java language itself isn't enabled).
  libgcj=
  ;;
no)
  # Make sure we get it printed in the list of not supported target libs.
  # Don't disable libffi, though, other languages use it.
  noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
  # Clear libgcj_saved so that even if java is enabled libffi won't be
  # built.
  libgcj_saved=
  ;;
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* | *-*-dragonfly*)
	;;
    *-*-solaris2* | *-*-irix6* | *-*-osf* | *-*-hpux11*)
	;;
    *-*-darwin* | *-*-aix*)
	;;
    *)
	noconfigdirs="$noconfigdirs target-libgomp"
	;;
    esac
fi

# Disable libssp for some systems.
case "${target}" in
  avr-*-*)
    noconfigdirs="$noconfigdirs target-libssp"
    ;;
  powerpc-*-aix* | rs6000-*-aix*)
    noconfigdirs="$noconfigdirs target-libssp"
    ;;
  microblaze*)
    noconfigdirs="$noconfigdirs target-libssp"
    ;;
esac

# Disable target libiberty for some systems.
case "${target}" in
  *-*-kaos*)
    # Remove unsupported stuff on all kaOS configurations.
    skipdirs="target-libiberty"
    ;;
  *-*-netbsd*)
    # Skip some stuff on all NetBSD configurations.
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  *-*-netware*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  *-*-rtems*)
    skipdirs="${skipdirs} target-libiberty"
    ;;
  *-*-tpf*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  *-*-vxworks*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  sh*-*-pe|mips*-*-pe|*arm-wince-pe)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  arm*-*-symbianelf*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  avr-*-*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  picochip-*-*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
  mips*-sde-elf*)
    skipdirs="$skipdirs target-libiberty"
    ;;
  ip2k-*-*)
    noconfigdirs="$noconfigdirs target-libiberty"
    ;;
esac

# Disable libstdc++-v3 for some systems.
case "${target}" in
  *-*-vxworks*)
    # VxWorks uses the Dinkumware C++ library.
    noconfigdirs="$noconfigdirs target-libstdc++-v3"
    ;;
  arm*-wince-pe*)
    # the C++ libraries don't build on top of CE's C libraries
    noconfigdirs="$noconfigdirs target-libstdc++-v3"
    ;;
  avr-*-*)
    noconfigdirs="$noconfigdirs target-libstdc++-v3"
    ;;
esac

# Disable Fortran for some systems.
case "${target}" in
  mmix-*-*)
    # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
    unsupported_languages="$unsupported_languages fortran"
    ;;
esac

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

case "${target}" in
  *-*-chorusos)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  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 ${libgcj}"
    ;;
  *-*-dragonfly*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  *-*-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 "${target}" in
      i*86-*-*) ;;
      alpha*-*-*) ;;
      x86_64-*-*) ;;
      *)
	noconfigdirs="$noconfigdirs ${libgcj}"
	;;
    esac
    ;;
  *-*-kaos*)
    # Remove unsupported stuff on all kaOS configurations.
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  *-*-netbsd*)
    # Skip some stuff on all NetBSD configurations.
    noconfigdirs="$noconfigdirs target-newlib 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-libgloss ${libgcj}"
    ;;
  *-*-rtems*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
    # The tpf target doesn't support gdb yet.
  *-*-tpf*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj} gdb tcl tk libgui itcl"
    ;;
  *-*-uclinux*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss target-rda ${libgcj}"
    ;;
  *-*-vxworks*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  alpha*-dec-osf*)
    # ld works, but does not support shared libraries.
    # newlib is not 64 bit ready.
    # gas doesn't generate exception information.
    noconfigdirs="$noconfigdirs gas ld target-newlib target-libgloss"
    ;;
  alpha*-*-*vms*)
    noconfigdirs="$noconfigdirs gdb 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 tcl tk itcl libgui sim"
    noconfigdirs="$noconfigdirs target-newlib"
    libgloss_dir=wince
    ;;
  arc-*-*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  arm-*-coff)
    libgloss_dir=arm
    ;;
  arm-*-elf* | arm*-*-eabi* )
    noconfigdirs="$noconfigdirs target-libffi"
    libgloss_dir=arm
    ;;
  arm*-*-linux-gnueabi)
    case ${with_newlib} in
      no) noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    esac
    libgloss_dir=arm
    ;;
  arm*-*-symbianelf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    libgloss_dir=arm
    ;;
  arm-*-pe*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  arm-*-riscix*)
    noconfigdirs="$noconfigdirs ld target-libgloss"
    ;;
  avr-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  bfin-*-*)
    unsupported_languages="$unsupported_languages java"
    noconfigdirs="$noconfigdirs target-boehm-gc"
    ;;
  c4x-*-* | tic4x-*-*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  tic54x-*-*)
    noconfigdirs="$noconfigdirs target-libgloss gdb"
    ;;
  cr16-*-*)
    noconfigdirs="$noconfigdirs ${libgcj} gdb"
    ;;
  cris-*-* | crisv32-*-*)
    unsupported_languages="$unsupported_languages java"
    case "${target}" in
      *-*-linux*)
	noconfigdirs="$noconfigdirs target-newlib target-libgloss";;
      *) # See PR46792 regarding target-libffi.
	noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
    esac
    libgloss_dir=cris
    ;;
  d10v-*-*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  d30v-*-*)
    noconfigdirs="$noconfigdirs gdb"
    ;;
  fr30-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj} gdb"
    ;;
  frv-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  moxie-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    noconfigdirs="$noconfigdirs gprof"
    ;;
  h8300*-*-*)
    noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
    ;;
  h8500-*-*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  hppa1.1-*-osf* | hppa1.1-*-bsd* )
    ;;
  hppa*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="$noconfigdirs target-zlib"
    ;;
  hppa*-*-linux*)
    ;;
  hppa*-*-*elf* | \
  hppa*-*-lites* | \
  hppa*-*-openbsd* | \
  hppa*64*-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  hppa*-hp-hpux11*)
    noconfigdirs="$noconfigdirs ld"
    ;;
  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 ${libgcj}"
    ;;
  i960-*-*)
    noconfigdirs="$noconfigdirs gdb"
    ;;
  ia64*-*-elf*)
    # No gdb support yet.
    noconfigdirs="$noconfigdirs readline libgui itcl gdb"
    ;;
  ia64*-**-hpux*)
    # No ld support yet.
    noconfigdirs="$noconfigdirs ${libgcj} libgui itcl ld"
    ;;
  ia64*-*-*vms*)
    # No gdb or ld support yet.
    noconfigdirs="$noconfigdirs ${libgcj} readline libgui itcl gdb ld"
    ;;
  i[[3456789]]86-*-coff | i[[3456789]]86-*-elf)
    noconfigdirs="$noconfigdirs ${libgcj}"
    libgloss_dir=i386
    ;;
  i[[3456789]]86-*-linux*)
    # This section makes it possible to build newlib natively on linux.
    # If we are using a cross compiler then don't configure newlib.
    if test x${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 target-libgloss target-newlib ${libgcj}"
    ;;
  i[[3456789]]86-*-mingw*)
    target_configdirs="$target_configdirs target-winsup"
    noconfigdirs="$noconfigdirs target-libgloss target-newlib ${libgcj}"
    ;;
  x86_64-*-mingw*)
    noconfigdirs="$noconfigdirs target-libgloss target-newlib ${libgcj}"
    ;;
  *-*-cygwin*)
    target_configdirs="$target_configdirs target-libtermcap target-winsup"
    noconfigdirs="$noconfigdirs target-libgloss"
    # always build newlib if winsup directory is present.
    if test -d "$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-*-interix* )
    ;;
  i[[3456789]]86-*-pe)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  i[[3456789]]86-*-sco3.2v5*)
    # The linker does not yet know about weak symbols in COFF,
    # and is not configured to handle mixed ELF and COFF.
    noconfigdirs="$noconfigdirs ld target-libgloss"
    ;;
  i[[3456789]]86-*-sco*)
    noconfigdirs="$noconfigdirs gprof target-libgloss"
    ;;
  i[[3456789]]86-*-solaris2*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  i[[3456789]]86-*-sysv4*)
    noconfigdirs="$noconfigdirs target-libgloss"
    ;;
  i[[3456789]]86-*-beos*)
    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
    ;;
  i[[3456789]]86-*-rdos*)
    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
    ;;
  m32r-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
    libgloss_dir=m68hc11
    ;;
  m68k-*-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;
  m68*-*-* | fido-*-*)
    libgloss_dir=m68k
    ;;
  mmix-*-*)
    noconfigdirs="$noconfigdirs target-libffi target-boehm-gc gdb"
    unsupported_languages="$unsupported_languages java"
    ;;
  mt-*-*)
    noconfigdirs="$noconfigdirs sim"
    ;;
  powerpc-*-aix*)
    # copied from rs6000-*-* entry
    noconfigdirs="$noconfigdirs gprof target-libgloss target-newlib ${libgcj}"
    ;;
  powerpc*-*-winnt* | powerpc*-*-pe*)
    target_configdirs="$target_configdirs target-winsup"
    noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
    # 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 tcl tk itcl"
    libgloss_dir=rs6000
    ;;
  powerpc-*-beos*)
    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
    ;;
  powerpc-*-eabi)
    noconfigdirs="$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-newlib ${libgcj}"
    ;;
  rs6000-*-*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    ;;
  m68k-apollo-*)
    noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
    ;;
  microblaze*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    ;;
  mips*-sde-elf*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    if test x$with_newlib = xyes; then
      noconfigdirs="$noconfigdirs gprof"
    fi
    libgloss_dir=mips
    ;;
  mips*-*-irix5*)
    noconfigdirs="$noconfigdirs gprof target-libgloss"
    ;;
  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"
    ;;
  mips*-*-linux*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
    ;;
  mips*-*-*)
    noconfigdirs="$noconfigdirs gprof ${libgcj}"
    libgloss_dir=mips
    ;;
  sh-*-* | sh64-*-*)
    case "${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 ${libgcj}"
    libgloss_dir=sparc
    ;;
  sparclite-*-*)
    libgloss_dir=sparc
    ;;
  sparc-*-sunos4*)
    if test x${is_cross_compiler} != xno ; then
           noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
    else
           use_gnu_ld=no
    fi
    ;;
  sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
    ;;
  tic6x-*-*)
    noconfigdirs="$noconfigdirs gdb sim ${libgcj}"
    ;;
  v810-*-*)
    noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
    ;;
  vax-*-*)
    noconfigdirs="$noconfigdirs target-newlib target-libgloss ${libgcj}"
    ;;
  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
    noconfigdirs="$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.
host_makefile_frag=/dev/null
if test -d ${srcdir}/config ; then
case "${host}" in
  i[[3456789]]86-*-msdosdjgpp*)
    host_makefile_frag="config/mh-djgpp"
    ;;
  *-cygwin*)
    ACX_CHECK_CYGWIN_CAT_WORKS
    host_makefile_frag="config/mh-cygwin"
    ;;