#! @SHELL@

# autoupdate - modernize a configure.in

# Copyright (C) 1994 Free Software Foundation, Inc.

# This program 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, 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.

# If given no args, update `configure.in';

# With one arg, write on the standard output from the given template file.

#

# Written by David MacKenzie <djm@gnu.ai.mit.edu>

usage="\

Usage: autoupdate [-h] [--help] [-m dir] [--macrodir=dir] 

       [--version] [template-file]" 

sedtmp=/tmp/acups.$$

# For debugging.

#sedtmp=/tmp/acups

show_version=no

test -z "${AC_MACRODIR}" && AC_MACRODIR=@datadir@

while test $# -gt 0 ; do

   case "${1}" in 

      -h | --help | --h* )

         echo "${usage}" 1>&2; exit 0 ;;

      --macrodir=* | --m*=* )

         AC_MACRODIR="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"

         shift ;;

      -m | --macrodir | --m* ) 

         shift

         test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }

         AC_MACRODIR="${1}"

         shift ;;

      --version | --versio | --versi | --vers)

        show_version=yes; shift ;;

      -- )     # Stop option processing

        shift; break ;;

      - )	# Use stdin as input.

        break ;;

      -* )

        echo "${usage}" 1>&2; exit 1 ;;

      * )

        break ;;

   esac

done

if test $show_version = yes; then

  version=`sed -n 's/define.AC_ACVERSION.[ 	]*\([0-9.]*\).*/\1/p' \

    $AC_MACRODIR/acgeneral.m4`

  echo "Autoconf version $version"

  exit 0

fi

: ${SIMPLE_BACKUP_SUFFIX='~'}

tmpout=acupo.$$

trap 'rm -f $sedtmp $tmpout; exit 1' 1 2 15

case $# in

  0) infile=configure.in; out="> $tmpout"

     # Make sure $infile can be read, and $tmpout has the same permissions.

     cp $infile $tmpout || exit

     # Make sure $infile can be written.

     if test ! -w $infile; then

       rm -f $tmpout

       echo "$0: $infile: cannot write" >&2

       exit 1

     fi

     ;;

  1) infile="$1"; out= ;;

  *) echo "$usage" >&2; exit 1 ;;

esac

# Turn the m4 macro file into a sed script.

# For each old macro name, make one substitution command to replace it

# at the end of a line, and one when followed by ( or whitespace.

# That is easier than splitting the macros up into those that take

# arguments and those that don't.

sed -n -e '

/^AC_DEFUN(/ {

  s//s%/

  s/, *\[indir(\[/$%/

  s/\].*/%/

  p

  s/\$//

  s/%/^/

  s/%/\\([( 	]\\)^/

  s/%/\\1^/

  s/\^/%/g

  p

}' ${AC_MACRODIR}/acoldnames.m4 > $sedtmp

eval sed -f $sedtmp $infile $out

case $# in

  0) mv configure.in configure.in${SIMPLE_BACKUP_SUFFIX} &&

     mv $tmpout configure.in ;;

esac

rm -f $sedtmp $tmpout

exit 0