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

## This file is a shell script fragment that supplies the information
## necessary to tailor a template configure script into the configure
## script appropriate for this directory.  For more information, check
## any existing configure script.  

## Be warned, there are two types of configure.in files.  There are those
## used by Autoconf, which are macros which are expanded into a configure
## script by autoconf.  The other sort, of which this is one, is executed
## by Cygnus configure.  

## For more information on these two systems, check out the documentation
## for 'Autoconf' (autoconf.texi) and 'Configure' (configure.texi).  

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

### 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.  For
### example, gdb requires that byacc (or bison) be built first, so it is in
### the ${host_tools} list after byacc and bison.  


# these libraries are used by various programs built for the host environment
#
host_libs="mmalloc libiberty opcodes bfd readline gash tcl tk tclX"

if [ "${enable_gdbgui}" = "yes" ] ; then
	host_libs="${host_libs} libgui"
fi

# these tools are built for the host environment
#
host_tools="byacc flex bison binutils ld gas gcc gdb make patch
	    prms send-pr gprof gdbtest tgas etc expect dejagnu sim
            m4 autoconf ispell grep diff rcs cvs fileutils shellutils
	    textutils wdiff find emacs emacs19 uudecode hello tar gzip indent
	    recode release sed utils termcap"


# 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="libm xiberty libgloss newlib libio librx libstdc++ libg++"


# 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="examples groff ddd"

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

## These two lists are of directories that are to be removed from the
## ${configdirs} list for either cross-compilations or for native-
## compilations.  For example, it doesn't make that much sense to
## cross-compile Emacs, nor is it terribly useful to compile xiberty in
## a native environment.  

# directories to be built in the native environment only
#
native_only="autoconf cvs emacs emacs19 fileutils find grep groff gzip hello
	     indent ispell m4 rcs recode sed shellutils tar textutils gash
	     uudecode wdiff gprof"

# directories to be built in a cross environment only
#
cross_only="xiberty libgloss newlib"

## 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=`echo ${host_libs} ${host_tools} ${target_libs} ${target_tools}`

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

srctrigger=move-if-change
srcname="gnu development package"

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

# per-host:

# Work in distributions that contain no compiler tools, like Autoconf.
if [ -d ${srcdir}/config ]; then
case "${host}" in
  m68k-hp-hpux*)	  host_makefile_frag=config/mh-hp300 ;;
  m68k-apollo-sysv*)      host_makefile_frag=config/mh-apollo68 ;;
  m68k-apollo-bsd*)       host_makefile_frag=config/mh-a68bsd ;;
  m88k-dg-dgux*)	  host_makefile_frag=config/mh-dgux ;;
  m88k-harris-cxux*)	  host_makefile_frag=config/mh-cxux ;;
  m88k-motorola-sysv*)    host_makefile_frag=config/mh-delta88;;
  mips*-dec-ultrix*)      host_makefile_frag=config/mh-decstation ;;
  mips*-sgi-irix[56]*)    host_makefile_frag=config/mh-irix5 ;;
  mips*-sgi-irix4*)       host_makefile_frag=config/mh-irix4 ;;
  mips*-sgi-irix3*)       host_makefile_frag=config/mh-sysv ;;
  mips*-*-sysv4*)	  host_makefile_frag=config/mh-sysv4 ;;
  mips*-*-sysv*)	  host_makefile_frag=config/mh-riscos ;;
  i[345]86-ncr-sysv4.3)   host_makefile_frag=config/mh-ncrsvr43 ;;
  i[345]86-ncr-sysv4*)    host_makefile_frag=config/mh-ncr3000 ;;
  i[345]86-*-sco*)        host_makefile_frag=config/mh-sco ;;
  i[345]86-*-isc*)	  host_makefile_frag=config/mh-sysv ;;
  i[345]86-*-linux*)      host_makefile_frag=config/mh-linux ;;
  i[345]86-*-solaris2*)   host_makefile_frag=config/mh-sysv4 ;;
  i[345]86-*-aix*)	  host_makefile_frag=config/mh-aix386 ;;
  i[345]86-*-go32*)	  host_makefile_frag=config/mh-go32 ;;
  i[345]86-*-win32)	  host_makefile_frag=config/mh-i386win32 ;;
  vax-*-ultrix2*)         host_makefile_frag=config/mh-vaxult2 ;;
  *-ibm-aix*)             host_makefile_frag=config/mh-aix ;;
  *-bull-bosx*)           host_makefile_frag=config/mh-aix ;;
  *-*-solaris2*)          host_makefile_frag=config/mh-solaris ;;
  m68k-sun-*)		  host_makefile_frag=config/mh-sun3 ;;
  *-sun-*)		  host_makefile_frag=config/mh-sun ;;
  *-hp-hpux[78]*)         host_makefile_frag=config/mh-hpux8 ;;
  *-hp-hpux*)             host_makefile_frag=config/mh-hpux ;;
  *-*-hiux*)              host_makefile_frag=config/mh-hpux ;;
  rs6000-*-lynxos*)	  host_makefile_frag=config/mh-lynxrs6k ;;
  *-*-lynxos*)	  	  host_makefile_frag=config/mh-lynxos ;;
  *-*-sysv4*)             host_makefile_frag=config/mh-sysv4 ;;
  *-*-sysv*)              host_makefile_frag=config/mh-sysv ;;
esac
fi

# The Solaris /usr/ucb/cc compiler does not appear to work.
case "${host}" in
  sparc-sun-solaris2*)
      if [ "`/usr/bin/which ${CC-cc}`" = "/usr/ucb/cc" ] ; then
          could_use=
          [ -d /opt/SUNWspro/bin ] && could_use="/opt/SUNWspro/bin"
          if [ -d /opt/cygnus/bin ] ; then
              if [ "$could_use" == "" ] ; then
                  could_use="/opt/cygnus/bin"
              else
                  could_use="$could_use or /opt/cygnus/bin"
              fi
          fi
        if [ "$could_use" = "" ] ; then
            echo "Warning: compilation may fail because you're using"
            echo "/usr/ucb/cc.  You should change your PATH or CC "
            echo "variable and rerun configure."
        else
            echo "Warning: compilation may fail because you're using"
            echo "/usr/ucb/cc, when you should use the C compiler from"
            echo "$could_use.  You should change your"
            echo "PATH or CC variable and rerun configure."
        fi
      fi
  ;;
esac

# We default to --with-shared on platforms where -fpic is meaningless.
# Well, we don't yet, but we will.
if false && [ "${host}" = "${target}" ] && [ x${enable_shared} = x ]; then
  case "${target}" in
    alpha-dec-osf*)	enable_shared=yes ;;
    mips-sgi-irix5*)	enable_shared=yes ;;
    *)			enable_shared=no ;;
  esac
fi

if [ x${enable_shared} = xyes ]; then
  waugh=
  case "${host}" in
    hppa*)		waugh=config/mh-papic ;;
    i[345]86-*)		waugh=config/mh-x86pic ;;
    *)			waugh=config/mh-${host_cpu}pic ;;
  esac
  if [ -f ${srcdir}/${waugh} ]; then
    if [ -n "${host_makefile_frag}" ] ; then
      cat ${srcdir}/${host_makefile_frag} > mh-frag
      cat ${srcdir}/${waugh} >> mh-frag
      host_makefile_frag=mh-frag
    else
      host_makefile_frag=${waugh}
    fi
  fi
fi

# per-target:

case "${target}" in
  v810*)		target_makefile_frag=config/mt-v810 ;;
  i[345]86-*-netware*)  target_makefile_frag=config/mt-netware ;;
  powerpc-*-netware*)   target_makefile_frag=config/mt-netware ;;
esac

gasdir=gas
use_gnu_ld=
use_gnu_as=

# 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)
    	configdirs=`echo " ${configdirs} " | sed -e 's/ tk / /;/ gash / /'`
	;;
  *)
    	echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2
    	;;
esac

# Some tools are only suitable for building in a "native" situation.
# Those are added when we have a host==target configuration.  For cross
# toolchains, we add some directories that should only be useful in a
# cross-compiler.

is_cross_compiler=

if [ x"${host}" = x"${target}" ] ; then
	# when doing a native toolchain, don't build the targets
	# that are in the 'cross only' list
	for i in ${cross_only} ; do
	  configdirs=`echo " ${configdirs} " | sed -e "s/ $i / /"`
	done
	is_cross_compiler=no
else
	# similarly, don't build the targets in the 'native only' 
	# list when building a cross compiler
	for i in ${native_only} ; do
	  configdirs=`echo " ${configdirs} " | sed -e "s/ $i / /"`
	done
	is_cross_compiler=yes
fi	

copy_dirs=

# Handle --with-headers=XXX.  The contents of the named directory are
# copied to $(tooldir)/include.
if [ x"${with_headers}" != x ]; then
  if [ x${is_cross_compiler} = xno ]; then
    echo 1>&2 '***' --with-headers is only supported when cross compiling
    exit 1
  fi
  case "${exec_prefixoption}" in
  "") x=${prefix} ;;
  *) x=${exec_prefix} ;;
  esac
  copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/include"
fi

# Handle --with-libs=XXX.  Multiple directories are permitted.  The
# contents are copied to $(tooldir)/lib.
if [ x"${with_libs}" != x ]; then
  if [ x${is_cross_compiler} = xno ]; then
    echo 1>&2 '***' --with-libs is only supported when cross compiling
    exit 1
  fi
  # Copy the libraries in reverse order, so that files in the first named
  # library override files in subsequent libraries.
  case "${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

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

# Recognize --with-newlib/--without-newlib.
if [ x${with_newlib} = xno ]; then
  configdirs=`echo " ${configdirs} " | sed -e 's/ newlib / /'`
elif [ x${with_newlib} = xyes ]; then
  configdirs=`echo " ${configdirs} " | sed -e 's/ newlib / /'`
  configdirs="${configdirs} newlib"
fi

# Handle ${copy_dirs}
set fnord ${copy_dirs}
shift
while [ $# != 0 ]; do
  if [ -f $2/COPIED ] && [ 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 [ -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.
    # FIXME: Should we use B in the second tar?  Not all systems support it.
    (cd $1; tar -cf - .) | (cd $2; tar -xpf -)

    # It is the responsibility of the user to correctly adjust all
    # symlinks.  If somebody can figure out how to handle them correctly
    # here, feel free to add the code.

    echo $1 > $2/COPIED
  fi
  shift; shift
done

# Configure extra directories which are host specific

case "${host}" in
  i[345]86-*-go32*)
	  configdirs="$configdirs dosrel" ;;
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.

noconfigdirs=""

case "${host}" in
  i[345]86-*-vsta)
    noconfigdirs="tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff"
    ;;
  i[345]86-*-go32)
    noconfigdirs="tcl tk expect deja-gnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff"
	;;
  i[345]86-*-win32)
    noconfigdirs="tcl tk expect deja-gnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff gdb"
    ;;
esac


case "${target}" in
  *-*-netware)
    noconfigdirs="$noconfigdirs libg++ libstdc++ librx newlib xiberty"
    ;;
  *-*-vxworks5.1)
    noconfigdirs="$noconfigdirs newlib"
    ;;
  alpha-dec-osf*)
    # ld works, but does not support shared libraries.  emacs doesn't
    # work.  newlib is not 64 bit ready.  I'm not sure about emacs19,
    # fileutils or grep.
    noconfigdirs="$noconfigdirs ld emacs emacs19 fileutils grep newlib"
    ;;
  alpha*-*-*)
    # newlib is not 64 bit ready
    noconfigdirs="$noconfigdirs newlib"
    ;;
  arm-*-riscix*)
    noconfigdirs="$noconfigdirs ld"
    ;;
  h8300*-*-* | \
  h8500-*-*)
    noconfigdirs="$noconfigdirs libg++ libstdc++ libio librx"
    ;;
  hppa*-*-*elf* | \
  hppa*-*-lites*)
    # Do configure ld/binutils/gas for this case.
    ;;
  hppa*-*-*)
    # HP's C compiler doesn't handle Emacs correctly (but on BSD and Mach
    # cc is gcc, and on any system a user should be able to link cc to
    # whatever they want.  FIXME, emacs emacs19).
    case "${CC}" in
	"" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
        *) ;;
    esac
    noconfigdirs="$noconfigdirs ld shellutils"
    ;;
  i[345]86-*-go32)
    # add the go32 support tools to the list
    # but don't build gdb
    configdirs=`echo go32 ${configdirs}`
    noconfigdirs="$noconfigdirs gdb libg++ libstdc++ libio librx"
    ;;

  i[345]86-*-win32)
    # Can't build gdb for win32 target
    noconfigdirs="$noconfigdirs gdb tk"
    # but put newlib back
    configdirs="$configdirs newlib"
    ;;    
  i[345]86-*-pe)
    noconfigdirs="$noconfigdirs libg++ libstdc++ libio librx"
    ;;
  i[345]86-*-sco*)
    noconfigdirs="$noconfigdirs gprof"
    ;;
  i[345]86-*-solaris2*)
    # The linker does static linking correctly, but the Solaris C library
    # has bugs such that some important functions won't work when statically
    # linked.  (See man pages for getpwuid, for example.)
    noconfigdirs="$noconfigdirs ld"
    ;;
  i[345]86-*-sysv4*)
    # The SYSV4 C compiler doesn't handle Emacs correctly
    case "${CC}" in
	"" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
        *) ;;
    esac
    # but that's okay since emacs doesn't work anyway
    noconfigdirs="$noconfigdirs emacs emacs19"
    ;;
  powerpc-*-aix*)
    # copied from rs6000-*-* entry
    noconfigdirs="$noconfigdirs gas ld binutils gprof textutils cvs"
    ;;
  rs6000-*-lynxos*)
    # a gcc built textutils will cause the linker to hang on 'join'
    # The CVS server code doesn't work on the RS/6000
    # Newlib makes problems for libg++ in crosses.
    noconfigdirs="$noconfigdirs gas ld newlib gprof textutils cvs"
    use_gnu_ld=no
    use_gnu_as=no
    ;;
  rs6000-*-*)
    # a gcc built textutils will cause the linker to hang on 'join'
    noconfigdirs="$noconfigdirs gas ld binutils gprof textutils"
    ;;
  m68k-apollo-*)
    noconfigdirs="$noconfigdirs ld binutils gprof"
    ;;
  mips*-*-irix5*)
    # The GNU linker does not support shared libraries.
    # emacs is emacs 18, which does not work on Irix 5 (emacs19 does work)
    noconfigdirs="$noconfigdirs ld gprof emacs"
    ;;
  mips*-dec-bsd*)
    noconfigdirs="$noconfigdirs gprof"
    ;;
  mips*-*-bsd*)
    noconfigdirs="$noconfigdirs gprof ld"
    ;;
  mips*-*-*)
    noconfigdirs="$noconfigdirs gprof"
    ;;
  romp-*-*)
    noconfigdirs="bfd binutils ld gas opcodes"
    ;;
  sh-*-*)
    case "${host}" in
      i[345]86-*-vsta) ;; # don't add gprof back in
      *) configdirs=`echo gprof ${configdirs}` ;;
      i[345]86-*-go32) ;; # don't add gprof back in
      *) configdirs=`echo gprof ${configdirs}` ;;
    esac
    ;;
  sparc-*-sunos4*)
    if [ x${is_cross_compiler} != xno ] ; then
           noconfigdirs="$noconfigdirs gdb gdbtest newlib"
    else
           use_gnu_ld=no
    fi
    ;;
  vax-*-vms)
    noconfigdirs="$noconfigdirs bfd binutils gdb ld newlib opcodes"
    ;;
  vax-*-*)
    noconfigdirs="$noconfigdirs newlib"
    ;;
  *-*-lynxos*)
     # Newlib makes problems for libg++ in crosses.
     noconfigdirs="$noconfigdirs newlib"
     ;;    
esac

# Remove the entries in $noconfigdirs from $configdirs.  If we have the
# source for them, add them to $notsupp.
notsupp=""
for dir in . $noconfigdirs ; do
  if [ $dir != . ]  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
    configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
    if [ -r $srcdir/$dir/configure ] || [ -r $srcdir/$dir/configure.in ]; then
      notsupp="$notsupp $dir"
    fi
  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 [ -n "${notsupp}" ] && [ -z "${norecursion}" ]; then
  # If $appdirs is non-empty, at least one of those directories must still
  # be configured, or we error out.  (E.g., if the gas release supports a
  # specified target in some subdirs but not the gas subdir, we shouldn't
  # pretend that all is well.)
  if [ -n "$appdirs" ]; then
    for dir in $appdirs ; do
      if [ -r $dir/Makefile.in ] && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1 ; then
	appdirs=""
	break
      fi
    done
    if [ -n "$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

# Set with_gnu_as and with_gnu_ld as appropriate.
#
# This is done by determining whether or not the appropriate directory
# is available, and by checking whether or not specific configurations
# have requested that this magic not happen.
# 
# The command line options always override the explicit settings in 
# configure.in, and the settings in configure.in override this magic.
#
# If the default for a toolchain is to use GNU as and ld, and you don't 
# want to do that, then you should use the --without-gnu-as and
# --without-gnu-ld options for the configure script.

if [ x${use_gnu_as} = x ] ; then
  if [ x${with_gnu_as} != xno ] && echo " ${configdirs} " | grep " ${gasdir} " > /dev/null 2>&1 && [ -d ${srcdir}/${gasdir} ] ; then
    with_gnu_as=yes
    withoptions="$withoptions --with-gnu-as"
  fi
fi

if [ x${use_gnu_ld} = x ] ; then
  if [ x${with_gnu_ld} != xno ] && echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 && [ -d ${srcdir}/ld ] ; then
    with_gnu_ld=yes
    withoptions="$withoptions --with-gnu-ld"
  fi
fi

if [ x${enable_shared} = xyes ]; then
  case "${target}" in
    hppa*)		target_makefile_frag=config/mt-papic ;;
    i[345]86-*)		target_makefile_frag=config/mt-x86pic ;;
    *)			target_makefile_frag=config/mt-${target_cpu}pic ;;
  esac
fi

#
# Local Variables:
# fill-column: 131
# End:
#
