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# ppc.m4,v 1.1 2001/11/20 18:50:12 joel Exp

#

# Some hacks for handling powerpc-exception subdirectories

#

# Note: Consider this file a temporary band-aid until a better, more general

# subdirectory handling solution is introduced to RTEMS.

AC_DEFUN([RTEMS_PPC_EXCEPTIONS],

[

exceptions="$1_exception_processing"

AC_SUBST(exceptions)

AC_CONFIG_COMMANDS_POST(

[

 exceptions_subdirs="$1_exception_processing"

 updir=/../support

if test "$no_recursion" != yes; then

  # Remove --cache-file and --srcdir arguments so they do not pile up.

  ac_sub_configure_args=

  ac_prev=

  for ac_arg in $ac_configure_args; do

    if test -n "$ac_prev"; then

      ac_prev=

      continue

    fi

    case $ac_arg in

    -cache-file | --cache-file | --cache-fil | --cache-fi \

    | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)

      ac_prev=cache_file ;;

    -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \

    | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \

    | --c=*)

      ;;

    --config-cache | -C)

      ;;

    -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)

      ac_prev=srcdir ;;

    -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)

      ;;

    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;

    esac

  done

  for ac_subdir in : $exceptions_subdirs; do test "x$ac_subdir" = x: && continue

    # Do not complain, so a configure script can configure whichever

    # parts of a large source tree are present.

    test -d $srcdir${updir}/$ac_subdir || continue

    AC_MSG_NOTICE([configuring in $ac_subdir])

    case $srcdir in

    .) ;;

    *) AS_MKDIR_P(["./$ac_subdir"])

       if test -d ./$ac_subdir; then :;

       else

         AC_MSG_ERROR([cannot create `pwd`/$ac_subdir])

       fi

       ;;

    esac

    ac_popdir=`pwd`

    cd $ac_subdir

    # A "../" for each directory in /$ac_subdir.

    ac_dots=`echo $ac_subdir |

             sed 's,^\./,,;s,[[^/]]$,&/,;s,[[^/]]*/,../,g'`

    case $srcdir in

    .) # No --srcdir option.  We are building in place.

      ac_sub_srcdir=$srcdir${updir} ;;

    [[\\/]]* | ?:[[\\/]]* ) # Absolute path.

      ac_sub_srcdir=$srcdir${updir}/$ac_subdir ;;

    *) # Relative path.

      ac_sub_srcdir=$ac_dots$srcdir${updir}/$ac_subdir ;;

    esac

    # Check for guested configure; otherwise get Cygnus style configure.

    if test -f $ac_sub_srcdir/configure.gnu; then

      ac_sub_configure="$SHELL '$ac_sub_srcdir/configure.gnu'"

    elif test -f $ac_sub_srcdir/configure; then

      ac_sub_configure="$SHELL '$ac_sub_srcdir/configure'"

    elif test -f $ac_sub_srcdir/configure.in; then

      ac_sub_configure=$ac_configure

    else

      AC_MSG_WARN([no configuration information is in $ac_subdir])

      ac_sub_configure=

    fi

    # The recursion is here.

    if test -n "$ac_sub_configure"; then

      # Make the cache file name correct relative to the subdirectory.

      case $cache_file in

      [[\\/]]* | ?:[[\\/]]* ) ac_sub_cache_file=$cache_file ;;

      *) # Relative path.

        ac_sub_cache_file=$ac_dots$cache_file ;;

      esac

      AC_MSG_NOTICE([running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir])

      # The eval makes quoting arguments work.

      eval $ac_sub_configure $ac_sub_configure_args \

           --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir ||

        AC_MSG_ERROR([$ac_sub_configure failed for $ac_subdir])

    fi

    cd $ac_popdir

  done

fi

])

])