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#! /bin/sh
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# Common stub for a few missing GNU programs while installing.
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scriptversion=2009-04-28.21; # UTC
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# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
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# 2008, 2009 Free Software Foundation, Inc.
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# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.
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# As a special exception to the GNU General Public License, if you
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# distribute this file as part of a program that contains a
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# configuration script generated by Autoconf, you may include it under
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# the same distribution terms that you use for the rest of that program.
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if test $# -eq 0; then
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  echo 1>&2 "Try \`$0 --help' for more information"
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  exit 1
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fi
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run=:
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sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
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sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
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# In the cases where this matters, `missing' is being run in the
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# srcdir already.
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if test -f configure.ac; then
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  configure_ac=configure.ac
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else
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  configure_ac=configure.in
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fi
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msg="missing on your system"
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case $1 in
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--run)
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  # Try to run requested program, and just exit if it succeeds.
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  run=
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  shift
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  "$@" && exit 0
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  # Exit code 63 means version mismatch.  This often happens
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  # when the user try to use an ancient version of a tool on
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  # a file that requires a minimum version.  In this case we
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  # we should proceed has if the program had been absent, or
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  # if --run hadn't been passed.
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  if test $? = 63; then
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    run=:
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    msg="probably too old"
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  fi
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  ;;
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  -h|--h|--he|--hel|--help)
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    echo "\
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$0 [OPTION]... PROGRAM [ARGUMENT]...
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Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
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error status if there is no known handling for PROGRAM.
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Options:
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  -h, --help      display this help and exit
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  -v, --version   output version information and exit
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  --run           try to run the given command, and emulate it if it fails
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Supported PROGRAM values:
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  aclocal      touch file \`aclocal.m4'
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  autoconf     touch file \`configure'
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  autoheader   touch file \`config.h.in'
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  autom4te     touch the output file, or create a stub one
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  automake     touch all \`Makefile.in' files
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  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
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  flex         create \`lex.yy.c', if possible, from existing .c
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  help2man     touch the output file
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  lex          create \`lex.yy.c', if possible, from existing .c
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  makeinfo     touch the output file
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  tar          try tar, gnutar, gtar, then tar without non-portable flags
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  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
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Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
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\`g' are ignored when checking the name.
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Send bug reports to <bug-automake@gnu.org>."
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    exit $?
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    ;;
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  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
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    echo "missing $scriptversion (GNU Automake)"
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    exit $?
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    ;;
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  -*)
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    echo 1>&2 "$0: Unknown \`$1' option"
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    echo 1>&2 "Try \`$0 --help' for more information"
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    exit 1
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    ;;
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esac
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# normalize program name to check for.
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program=`echo "$1" | sed '
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  s/^gnu-//; t
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  s/^gnu//; t
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  s/^g//; t'`
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# Now exit if we have it, but it failed.  Also exit now if we
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# don't have it and --version was passed (most likely to detect
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# the program).  This is about non-GNU programs, so use $1 not
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# $program.
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case $1 in
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  lex*|yacc*)
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    # Not GNU programs, they don't have --version.
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    ;;
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  tar*)
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    if test -n "$run"; then
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       echo 1>&2 "ERROR: \`tar' requires --run"
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       exit 1
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    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
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       exit 1
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    fi
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    ;;
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  *)
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    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
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       # We have it, but it failed.
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       exit 1
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    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
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       # Could not run --version or --help.  This is probably someone
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       # running `$TOOL --version' or `$TOOL --help' to check whether
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       # $TOOL exists and not knowing $TOOL uses missing.
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       exit 1
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    fi
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    ;;
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esac
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# If it does not exist, or fails to run (possibly an outdated version),
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# try to emulate it.
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case $program in
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  aclocal*)
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    echo 1>&2 "\
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WARNING: \`$1' is $msg.  You should only need it if
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         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
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         to install the \`Automake' and \`Perl' packages.  Grab them from
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         any GNU archive site."
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    touch aclocal.m4
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    ;;
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  autoconf*)
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    echo 1>&2 "\
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WARNING: \`$1' is $msg.  You should only need it if
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         you modified \`${configure_ac}'.  You might want to install the
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         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
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         archive site."
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    touch configure
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    ;;
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  autoheader*)
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    echo 1>&2 "\
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WARNING: \`$1' is $msg.  You should only need it if
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         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
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         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
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         from any GNU archive site."
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    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
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    test -z "$files" && files="config.h"
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    touch_files=
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    for f in $files; do
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      case $f in
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      *:*) touch_files="$touch_files "`echo "$f" |
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                     sed -e 's/^[^:]*://' -e 's/:.*//'`;;
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      *) touch_files="$touch_files $f.in";;
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      esac
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    done
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    touch $touch_files
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    ;;
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  automake*)
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    echo 1>&2 "\
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WARNING: \`$1' is $msg.  You should only need it if
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         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
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         You might want to install the \`Automake' and \`Perl' packages.
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         Grab them from any GNU archive site."
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    find . -type f -name Makefile.am -print |
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     sed 's/\.am$/.in/' |
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     while read f; do touch "$f"; done
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    ;;
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  autom4te*)
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    echo 1>&2 "\
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WARNING: \`$1' is needed, but is $msg.
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         You might have modified some files without having the
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         proper tools for further handling them.
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         You can get \`$1' as part of \`Autoconf' from any GNU
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         archive site."
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    file=`echo "$*" | sed -n "$sed_output"`
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    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
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    if test -f "$file"; then
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  touch $file
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    else
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  test -z "$file" || exec >$file
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  echo "#! /bin/sh"
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  echo "# Created by GNU Automake missing as a replacement of"
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  echo "#  $ $@"
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  echo "exit 0"
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  chmod +x $file
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  exit 1
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    fi
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    ;;
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  bison*|yacc*)
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    echo 1>&2 "\
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WARNING: \`$1' $msg.  You should only need it if
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         you modified a \`.y' file.  You may need the \`Bison' package
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         in order for those modifications to take effect.  You can get
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         \`Bison' from any GNU archive site."
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    rm -f y.tab.c y.tab.h
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    if test $# -ne 1; then
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        eval LASTARG="\${$#}"
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  case $LASTARG in
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  *.y)
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      SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
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      if test -f "$SRCFILE"; then
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           cp "$SRCFILE" y.tab.c
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      fi
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      SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
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      if test -f "$SRCFILE"; then
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           cp "$SRCFILE" y.tab.h
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      fi
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    ;;
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  esac
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    fi
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    if test ! -f y.tab.h; then
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  echo >y.tab.h
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    fi
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    if test ! -f y.tab.c; then
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  echo 'main() { return 0; }' >y.tab.c
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    fi
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    ;;
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  lex*|flex*)
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    echo 1>&2 "\
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WARNING: \`$1' is $msg.  You should only need it if
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         you modified a \`.l' file.  You may need the \`Flex' package
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         in order for those modifications to take effect.  You can get
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         \`Flex' from any GNU archive site."
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    rm -f lex.yy.c
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    if test $# -ne 1; then
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        eval LASTARG="\${$#}"
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  case $LASTARG in
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  *.l)
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      SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
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      if test -f "$SRCFILE"; then
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           cp "$SRCFILE" lex.yy.c
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      fi
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    ;;
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  esac
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    fi
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    if test ! -f lex.yy.c; then
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  echo 'main() { return 0; }' >lex.yy.c
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    fi
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    ;;
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  help2man*)
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    echo 1>&2 "\
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WARNING: \`$1' is $msg.  You should only need it if
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   you modified a dependency of a manual page.  You may need the
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   \`Help2man' package in order for those modifications to take
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   effect.  You can get \`Help2man' from any GNU archive site."
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    file=`echo "$*" | sed -n "$sed_output"`
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    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
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    if test -f "$file"; then
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  touch $file
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    else
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  test -z "$file" || exec >$file
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  echo ".ab help2man is required to generate this page"
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  exit $?
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    fi
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    ;;
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  makeinfo*)
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    echo 1>&2 "\
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WARNING: \`$1' is $msg.  You should only need it if
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         you modified a \`.texi' or \`.texinfo' file, or any other file
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         indirectly affecting the aspect of the manual.  The spurious
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         call might also be the consequence of using a buggy \`make' (AIX,
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         DU, IRIX).  You might want to install the \`Texinfo' package or
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         the \`GNU make' package.  Grab either from any GNU archive site."
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    # The file to touch is that specified with -o ...
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    file=`echo "$*" | sed -n "$sed_output"`
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    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
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    if test -z "$file"; then
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      # ... or it is the one specified with @setfilename ...
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      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
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      file=`sed -n '
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  /^@setfilename/{
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    s/.* \([^ ]*\) *$/\1/
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    p
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    q
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  }' $infile`
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      # ... or it is derived from the source name (dir/f.texi becomes f.info)
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      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
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    fi
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    # If the file does not exist, the user really needs makeinfo;
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    # let's fail without touching anything.
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    test -f $file || exit 1
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    touch $file
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    ;;
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  tar*)
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    shift
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    # We have already tried tar in the generic part.
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    # Look for gnutar/gtar before invocation to avoid ugly error
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    # messages.
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    if (gnutar --version > /dev/null 2>&1); then
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       gnutar "$@" && exit 0
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    fi
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    if (gtar --version > /dev/null 2>&1); then
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       gtar "$@" && exit 0
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    fi
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    firstarg="$1"
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    if shift; then
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  case $firstarg in
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  *o*)
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      firstarg=`echo "$firstarg" | sed s/o//`
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      tar "$firstarg" "$@" && exit 0
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      ;;
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  esac
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  case $firstarg in
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  *h*)
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      firstarg=`echo "$firstarg" | sed s/h//`
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      tar "$firstarg" "$@" && exit 0
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      ;;
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  esac
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    fi
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    echo 1>&2 "\
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WARNING: I can't seem to be able to run \`tar' with the given arguments.
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         You may want to install GNU tar or Free paxutils, or check the
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         command line arguments."
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    exit 1
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    ;;
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  *)
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    echo 1>&2 "\
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WARNING: \`$1' is needed, and is $msg.
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         You might have modified some files without having the
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         proper tools for further handling them.  Check the \`README' file,
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         it often tells you about the needed prerequisites for installing
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         this package.  You may also peek at any GNU archive site, in case
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         some other package would contain this missing \`$1' program."
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    exit 1
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    ;;
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esac
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exit 0
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# Local variables:
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# eval: (add-hook 'write-file-hooks 'time-stamp)
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# time-stamp-start: "scriptversion="
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# time-stamp-format: "%:y-%02m-%02d.%02H"
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# time-stamp-time-zone: "UTC"
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# time-stamp-end: "; # UTC"
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# End:

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