autoconf/bin/autoconf.as

AS_INIT[]dnl                                            -*- shell-script -*-
# autoconf -- create `configure' using m4 macros
# Copyright (C) 1992, 1993, 1994, 1996, 1999, 2000, 2001, 2002
# 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.

usage=["\
Usage: $0 [OPTION] ... [TEMPLATE-FILE]

Generate a configuration script from a TEMPLATE-FILE if given, or
\`configure.ac' if present, or else \`configure.in'.  Output is sent
to the standard output if TEMPLATE-FILE is given, else into
\`configure'.

Operation modes:
  -h, --help               print this help, then exit
  -V, --version            print version number, then exit
  -v, --verbose            verbosely report processing
  -d, --debug              don't remove temporary files
  -I, --include=DIR        look for input files in DIR (cumulative)
  -f, --force              consider all files obsolete
  -o, --output=FILE        save output in FILE (stdout is the default)
  -W, --warnings=CATEGORY  report the warnings falling in CATEGORY [syntax]

Warning categories include:
  \`cross'         cross compilation issues
  \`obsolete'      obsolete constructs
  \`syntax'        dubious syntactic constructs
  \`all'           all the warnings
  \`no-CATEGORY'   turn off the warnings on CATEGORY
  \`none'          turn off all the warnings
  \`error'         warnings are error

The environment variable \`WARNINGS' is honored.

Tracing:
  -t, --trace=MACRO     report the list of calls to MACRO
  -i, --initialization  also trace Autoconf's initialization process

In tracing mode, no configuration script is created.

Report bugs to <bug-autoconf@gnu.org>."]

version=["\
autoconf (@PACKAGE_NAME@) @VERSION@
Written by David J. MacKenzie and Akim Demaille.

Copyright 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."]

me=`AS_BASENAME([$0])`

help="\
Try \`$me --help' for more information."

exit_missing_arg="\
echo \"$me: option \\\`\$1' requires an argument\" >&2
echo \"\$help\" >&2
exit 1"

# Variables.
: ${AUTOM4TE=@autom4te-name@}
dir=`AS_DIRNAME([$0])`
outfile=
verbose=:

# Parse command line.
while test $# -gt 0 ; do
  option=[`expr "x$1" : 'x\(--[^=]*\)' \| \
               "x$1" : 'x\(-.\)'`]
  optarg=[`expr "x$1" : 'x--[^=]*=\(.*\)' \| \
               "x$1" : 'x-.\(.*\)'`]
  case $1 in
    --version | -V )
       echo "$version" ; exit 0 ;;
    --help | -h )
       echo "$usage"; exit 0 ;;

    --verbose | -v )
       verbose=echo
       AUTOM4TE="$AUTOM4TE $1"; shift ;;

    # Arguments passed as is to autom4te.
    --debug      | -d   | \
    --force      | -f   | \
    --include=*  | -I?* | \
    --warnings=* | -W?* )
       AUTOM4TE="$AUTOM4TE $1"; shift ;;

    # Options with separated arg passed as is to autom4te.
    --include | -I | \
    --warnings | -W )
       test $# = 1 && eval "$exit_missing_arg"
       AUTOM4TE="$AUTOM4TE $option $2"
       shift 2 ;;

    # Obsolete options.
    --localdir=* | -l?* | --autoconf-dir=* | -A?* | --macrodir=* | -m?* )
       echo "$me: warning: $option is obsolete, use --include" >&2
       AUTOM4TE="$AUTOM4TE --include=$optarg"
       shift ;;
    --localdir | -l | --autoconf-dir | -A | --macrodir | -m )
       echo "$me: warning: $option is obsolete, use --include" >&2
       test $# = 1 && eval "$exit_missing_arg"
       shift
       AUTOM4TE="$AUTOM4TE --include=$1"
       shift ;;

    --trace=* | -t?* )
       traces="$traces --trace='"`echo "$optarg" | sed "s/'/'\\\\\\\\''/g"`"'"
       shift ;;
    --trace | -t )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       traces="$traces --trace='"`echo "$1" | sed "s/'/'\\\\\\\\''/g"`"'"
       shift ;;
    --initialization | -i )
       AUTOM4TE="$AUTOM4TE --melt"
       shift;;

    --output=* | -o?* )
       outfile=$optarg
       shift ;;
    --output | -o )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       outfile=$1
       shift ;;

    -- )     # Stop option processing
       shift; break ;;
    - )	# Use stdin as input.
       break ;;
    -* )
       exec >&2
       echo "$me: invalid option $1"
       echo "$help"
       exit 1 ;;
    * )
       break ;;
  esac
done

# Find the input file.
case $# in
  0)
    case `ls configure.ac configure.in 2>/dev/null` in
      *ac*in )
        echo "$me: warning: both \`configure.ac' and \`configure.in' are present." >&2
        echo "$me: warning: proceeding with \`configure.ac'." >&2
        infile=configure.ac;;
      *ac ) infile=configure.ac;;
      *in ) infile=configure.in;;
      * )
        echo "$me: no input file" >&2
        exit 1;;
    esac
    test -z "$traces" && test -z "$outfile" && outfile=configure;;
  1) # autom4te doesn't like `-'.
     test "x$1" != "x-" && infile=$1 ;;
  *) exec >&2
     echo "$me: invalid number of arguments."
     echo "$help"
     (exit 1); exit 1 ;;
esac

# Unless specified, the output is stdout.
test -z "$outfile" && outfile=-

# Run autom4te with expansion.
eval set \$AUTOM4TE --language=autoconf --output=\$outfile "$traces" \$infile
$verbose "$me: running $*" >&2
exec "$@"