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Mail Archives: cygwin-apps/2001/10/06/02:46:09

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Message-ID: <3BBEA89B.3070305@ece.gatech.edu>
Date: Sat, 06 Oct 2001 02:45:47 -0400
From: Charles Wilson <cwilson AT ece DOT gatech DOT edu>
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To: cygwin-apps AT cygwin DOT com
Subject: Re: Autotools; new versions
References: <3BAA33FD DOT 9C1B704C AT ece DOT gatech DOT edu>

This is a multi-part message in MIME format.
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So here's my first attempt at a wrapper script.  (Of course, I'll also 
need to do wrappers for autoheader, autoreconf, autoscan, autoupdate, 
and ifnames -- and then repeat for the automake packages.)

Assuming that autoconf-2.13 is installed into /usr/auto-stable/* and 
autoconf-2.52 is installed into /usr/auto-devel/* (as I have built them 
on my system) this works pretty well.

What do you think?  Should I continue on this path?

--Chuck

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Content-Type: text/plain;
 name="autoconf"
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 filename="autoconf"

#! /bin/bash 

path_stable=/usr/auto-stable
path_devel=/usr/auto-devel

# Set up variables
unset opt_version
unset opt_help
unset opt_debug
unset opt_verbose
unset opt_localdir
unset opt_autoconfdir
unset opt_macrodir
unset opt_traces
unset traces
unset opt_initialization
unset opt_output
unset opt_warnings
unset warnings
unset opt_stop
unset autosense_input

me=`echo "$0" | sed -e 's,.*[\\/],,'`

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

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

# Parse command line.  We have to do this in case the user
# specifies the input file or uses stdin.  If so, then
# we must accommodate...but we can only do that if we
# parse ALL possible options.  This gets ugly if the
# two versions of autoconf accept different options.
while test $# -gt 0 ; do
  optarg=`expr "x$1" : 'x--[^=]*=\(.*\)' \| \
               "x$1" : 'x-.\(.*\)'`
  case $1 in
    --version | -V ) 
       opt_version="--version"
       shift ;;
    --help | -h )
       opt_help="--help"
       shift ;;
    --debug | -d )
       opt_debug="--debug"
       shift ;;
    --verbose | -v )
       opt_verbose="--verbose"
       shift ;;

    --localdir=* | -l?* )
       opt_localdir="--localdir=$optarg"
       shift ;;
    --localdir | -l )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       opt_localdir="--localdir=$1"
       shift ;;

    --autoconf-dir=* | -A?* )
       opt_autoconfdir="--autoconf-dir=$optarg"
       shift ;;
    --autoconf-dir | -A )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       opt_autoconfdir="--autoconf-dir=$1"
       shift ;;

    --macrodir=* | -m?* )
       opt_macrodir="--macrodir=$optarg"
       shift ;;
    --macrodir | -m )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       opt_macrodir="--macrodir=$1"
       shift ;;

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

    --initialization | -i )
       opt_initialization="--initialization"
       shift ;;

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

    --warnings=* | -W?* )
       warnings=$warnings,$optarg
       shift ;;
    --warnings | -W )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       warnings=$warnings,$1
       shift ;;

    -- )     # Stop option processing
       shift
       opt_stop="--"
       break ;;

    - )	# Use stdin as input.
       break ;;

    -* )
       exec >&2
       echo "$me: invalid option $1"
       echo "$help"
       exit 1 ;;

    * )
       break ;;
  esac
done

# Special handling for the options that can be called 
# multiple times.
if [ "x$warnings" != "x" ] ; then
  opt_warnings="--warnings=$warnings"
fi
if [ "x$traces" != "x" ] ; then
  opt_traces="--trace=$traces"
fi

# Trap on 0 to stop playing with `rm'.
$debug ||
{
  trap 'status=$?; rm -rf $tmp && exit $status' 0
  trap '(exit 1); exit 1' 1 2 13 15
}

# Create a (secure) tmp directory for tmp files.
: ${TMPDIR=/tmp}
{
  tmp=`(umask 077 && mktemp -d -q "$TMPDIR/acXXXXXX") 2>/dev/null` &&
  test -n "$tmp" && test -d "$tmp"
} ||
{
  tmp=$TMPDIR/ac$$
  (umask 077 && mkdir $tmp)
} ||
{
   echo "$me: cannot create a temporary directory in $TMPDIR" >&2
   (exit 1); exit 1;
}

# 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 
    autosense_input=true ;;
  1) infile=$1 ;;
  *) exec >&2
     echo "$me: invalid number of arguments."
     echo "$help"
     (exit 1); exit 1 ;;
esac

# We need an actual file.
if test z$infile = z-; then
  infile=$tmp/stdin
  cat >$infile
elif test ! -r "$infile"; then
  echo "$me: $infile: No such file or directory" >&2
  (exit 1); exit 1
fi

# Find the version
VER=`sed -n -e '/AC_PREREQ/s/[^(]*(\([[:digit:]\.]*\))/\1/p' < configure.in`
VER1=`echo $VER | awk -F. '{print $1 "." $2}'`

# Set the PATH appropriately
if [ "x${VER1}" == "x2.13" ] ; then
  export PATH=${path_stable}/bin:${PATH} 
  export M4PATH=${path_stable}/share/autoconf
else
  export PATH=${path_devel}/bin:${PATH}
  export M4PATH=${path_devel}/share/autoconf
fi

# exec the "real" autoconf
if [ "z$infile" == "z$tmp/stdin" ] ; then
  exec autoconf $opt_version $opt_help \
       $opt_debug $opt_verbose $opt_localdir \
       $opt_autoconfdir $opt_macrodir $opt_traces \
       $opt_initialization $opt_output $opt_warnings \
       $opt_stop - < $infile
elif [ "z$autosense_input" == "ztrue" ] ; then
  rm -rf $tmp 
  exec autoconf $opt_version $opt_help \
       $opt_debug $opt_verbose $opt_localdir \
       $opt_autoconfdir $opt_macrodir $opt_traces \
       $opt_initialization $opt_output $opt_warnings \
       $opt_stop 
else
  rm -rf $tmp 
  exec autoconf $opt_version $opt_help \
       $opt_debug $opt_verbose $opt_localdir \
       $opt_autoconfdir $opt_macrodir $opt_traces \
       $opt_initialization $opt_output $opt_warnings \
       $opt_stop $infile
fi

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