#! /bin/sh
 # Common stub for a few missing GNU programs while installing.

 
 scriptversion=2005-06-08.21
 
 # Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005
 #   Free Software Foundation, Inc.

 # Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # 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., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301, USA.

 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
 # configuration script generated by Autoconf, you may include it under
 # the same distribution terms that you use for the rest of that program.
 
 if test $# -eq 0; then
   echo 1>&2 "Try \`$0 --help' for more information"
   exit 1
 fi
 
 run=:
 
 # In the cases where this matters, `missing' is being run in the
 # srcdir already.
 if test -f configure.ac; then
   configure_ac=configure.ac
 else
   configure_ac=configure.in
 fi
 

 msg="missing on your system"
 

 case "$1" in
 --run)
   # Try to run requested program, and just exit if it succeeds.
   run=
   shift
   "$@" && exit 0

   # Exit code 63 means version mismatch.  This often happens
   # when the user try to use an ancient version of a tool on
   # a file that requires a minimum version.  In this case we
   # we should proceed has if the program had been absent, or
   # if --run hadn't been passed.
   if test $? = 63; then
     run=:
     msg="probably too old"
   fi

   ;;
 
   -h|--h|--he|--hel|--help)
     echo "\
 $0 [OPTION]... PROGRAM [ARGUMENT]...
 
 Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
 error status if there is no known handling for PROGRAM.
 
 Options:
   -h, --help      display this help and exit
   -v, --version   output version information and exit
   --run           try to run the given command, and emulate it if it fails
 
 Supported PROGRAM values:
   aclocal      touch file \`aclocal.m4'
   autoconf     touch file \`configure'
   autoheader   touch file \`config.h.in'
   automake     touch all \`Makefile.in' files
   bison        create \`y.tab.[ch]', if possible, from existing .[ch]
   flex         create \`lex.yy.c', if possible, from existing .c
   help2man     touch the output file
   lex          create \`lex.yy.c', if possible, from existing .c
   makeinfo     touch the output file
   tar          try tar, gnutar, gtar, then tar without non-portable flags

   yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
 
 Send bug reports to <bug-automake@gnu.org>."
     exit $?

     ;;
 
   -v|--v|--ve|--ver|--vers|--versi|--versio|--version)

     echo "missing $scriptversion (GNU Automake)"
     exit $?

     ;;
 
   -*)
     echo 1>&2 "$0: Unknown \`$1' option"
     echo 1>&2 "Try \`$0 --help' for more information"
     exit 1
     ;;
 

 esac
 
 # Now exit if we have it, but it failed.  Also exit now if we
 # don't have it and --version was passed (most likely to detect
 # the program).
 case "$1" in
   lex|yacc)
     # Not GNU programs, they don't have --version.
     ;;
 
   tar)
     if test -n "$run"; then
        echo 1>&2 "ERROR: \`tar' requires --run"
        exit 1
     elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
        exit 1
     fi
     ;;
 
   *)

     if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
        # We have it, but it failed.
        exit 1

     elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
        # Could not run --version or --help.  This is probably someone
        # running `$TOOL --version' or `$TOOL --help' to check whether
        # $TOOL exists and not knowing $TOOL uses missing.
        exit 1

     fi

     ;;
 esac

 # If it does not exist, or fails to run (possibly an outdated version),
 # try to emulate it.
 case "$1" in
   aclocal*)

     echo 1>&2 "\

 WARNING: \`$1' is $msg.  You should only need it if

          you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
          to install the \`Automake' and \`Perl' packages.  Grab them from
          any GNU archive site."
     touch aclocal.m4
     ;;
 
   autoconf)
     echo 1>&2 "\

 WARNING: \`$1' is $msg.  You should only need it if

          you modified \`${configure_ac}'.  You might want to install the
          \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
          archive site."
     touch configure
     ;;
 
   autoheader)
     echo 1>&2 "\

 WARNING: \`$1' is $msg.  You should only need it if

          you modified \`acconfig.h' or \`${configure_ac}'.  You might want
          to install the \`Autoconf' and \`GNU m4' packages.  Grab them
          from any GNU archive site."
     files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
     test -z "$files" && files="config.h"
     touch_files=
     for f in $files; do
       case "$f" in
       *:*) touch_files="$touch_files "`echo "$f" |
 				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
       *) touch_files="$touch_files $f.in";;
       esac
     done
     touch $touch_files
     ;;
 
   automake*)
     echo 1>&2 "\

 WARNING: \`$1' is $msg.  You should only need it if

          you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
          You might want to install the \`Automake' and \`Perl' packages.
          Grab them from any GNU archive site."
     find . -type f -name Makefile.am -print |
 	   sed 's/\.am$/.in/' |
 	   while read f; do touch "$f"; done
     ;;
 
   autom4te)
     echo 1>&2 "\

 WARNING: \`$1' is needed, but is $msg.
          You might have modified some files without having the

          proper tools for further handling them.

          You can get \`$1' as part of \`Autoconf' from any GNU

          archive site."
 
     file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
     test -z "$file" && file=`echo "$*" | sed -n 's/.*-o[ ]*\([^ ]*\).*/\1/p'`
     if test -f "$file"; then
 	touch $file
     else
 	test -z "$file" || exec >$file
 	echo "#! /bin/sh"
 	echo "# Created by GNU Automake missing as a replacement of"
 	echo "#  $ $@"
 	echo "exit 0"
 	chmod +x $file
 	exit 1
     fi
     ;;
 
   bison|yacc)
     echo 1>&2 "\

 WARNING: \`$1' $msg.  You should only need it if

          you modified a \`.y' file.  You may need the \`Bison' package
          in order for those modifications to take effect.  You can get
          \`Bison' from any GNU archive site."
     rm -f y.tab.c y.tab.h
     if [ $# -ne 1 ]; then
         eval LASTARG="\${$#}"
 	case "$LASTARG" in
 	*.y)
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
 	    if [ -f "$SRCFILE" ]; then
 	         cp "$SRCFILE" y.tab.c
 	    fi
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
 	    if [ -f "$SRCFILE" ]; then
 	         cp "$SRCFILE" y.tab.h
 	    fi
 	  ;;
 	esac
     fi
     if [ ! -f y.tab.h ]; then
 	echo >y.tab.h
     fi
     if [ ! -f y.tab.c ]; then
 	echo 'main() { return 0; }' >y.tab.c
     fi
     ;;
 
   lex|flex)
     echo 1>&2 "\

 WARNING: \`$1' is $msg.  You should only need it if

          you modified a \`.l' file.  You may need the \`Flex' package
          in order for those modifications to take effect.  You can get
          \`Flex' from any GNU archive site."
     rm -f lex.yy.c
     if [ $# -ne 1 ]; then
         eval LASTARG="\${$#}"
 	case "$LASTARG" in
 	*.l)
 	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
 	    if [ -f "$SRCFILE" ]; then
 	         cp "$SRCFILE" lex.yy.c
 	    fi
 	  ;;
 	esac
     fi
     if [ ! -f lex.yy.c ]; then
 	echo 'main() { return 0; }' >lex.yy.c
     fi
     ;;
 
   help2man)
     echo 1>&2 "\

 WARNING: \`$1' is $msg.  You should only need it if

 	 you modified a dependency of a manual page.  You may need the
 	 \`Help2man' package in order for those modifications to take
 	 effect.  You can get \`Help2man' from any GNU archive site."
 
     file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
     if test -z "$file"; then
 	file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
     fi
     if [ -f "$file" ]; then
 	touch $file
     else
 	test -z "$file" || exec >$file
 	echo ".ab help2man is required to generate this page"
 	exit 1
     fi
     ;;
 
   makeinfo)
     echo 1>&2 "\

 WARNING: \`$1' is $msg.  You should only need it if

          you modified a \`.texi' or \`.texinfo' file, or any other file
          indirectly affecting the aspect of the manual.  The spurious
          call might also be the consequence of using a buggy \`make' (AIX,
          DU, IRIX).  You might want to install the \`Texinfo' package or
          the \`GNU make' package.  Grab either from any GNU archive site."

     # The file to touch is that specified with -o ...

     file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
     if test -z "$file"; then

       # ... or it is the one specified with @setfilename ...
       infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
       file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $infile`
       # ... or it is derived from the source name (dir/f.texi becomes f.info)
       test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info

     fi

     # If the file does not exist, the user really needs makeinfo;
     # let's fail without touching anything.
     test -f $file || exit 1

     touch $file
     ;;
 
   tar)
     shift
 
     # We have already tried tar in the generic part.
     # Look for gnutar/gtar before invocation to avoid ugly error
     # messages.
     if (gnutar --version > /dev/null 2>&1); then

        gnutar "$@" && exit 0

     fi
     if (gtar --version > /dev/null 2>&1); then

        gtar "$@" && exit 0

     fi
     firstarg="$1"
     if shift; then
 	case "$firstarg" in
 	*o*)
 	    firstarg=`echo "$firstarg" | sed s/o//`

 	    tar "$firstarg" "$@" && exit 0

 	    ;;
 	esac
 	case "$firstarg" in
 	*h*)
 	    firstarg=`echo "$firstarg" | sed s/h//`

 	    tar "$firstarg" "$@" && exit 0

 	    ;;
 	esac
     fi
 
     echo 1>&2 "\
 WARNING: I can't seem to be able to run \`tar' with the given arguments.
          You may want to install GNU tar or Free paxutils, or check the
          command line arguments."
     exit 1
     ;;
 
   *)
     echo 1>&2 "\

 WARNING: \`$1' is needed, and is $msg.
          You might have modified some files without having the

          proper tools for further handling them.  Check the \`README' file,

          it often tells you about the needed prerequisites for installing

          this package.  You may also peek at any GNU archive site, in case
          some other package would contain this missing \`$1' program."
     exit 1
     ;;
 esac
 
 exit 0

 
 # Local variables:
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
 # time-stamp-end: "$"
 # End: