#!/bin/ksh
# $Id: defines.sh,v 1.1 2005/11/16 20:01:45 sms Exp $
# www.pccl.demon.co.uk
#

# Script to display C # define values.
# Set CC to the C preprocessor command.
# Set DATA to the directory containing defines.list
# defines.list contains the list of definitions to look for.

CC=gcc
DATA=$HOME/data
TMP=/tmp/$$

PROGRAM=`basename $0`

usage()
{
	echo "USAGE $PROGNAME [-c compiler]"
}


 exit_trap ()
{
	rm -rf $TMP.* 2>/dev/null
}

trap exit_trap exit

while getopts c: OPTION
do
	case $OPTION in	
		c)	CC=$OPTARG
			;;
		?)	usage
			exit 0
			;;
		*)	usage
			exit 22
			;;
	esac
done

sort -u $DATA/defines.list | sed -e "s/^[	 ]*#.*//" | {
	while read X
	do
		if [ "$X" != "" ]
		then
			echo	"\"$X\" $X"
		fi
done } >$TMP.c

$CC -E $TMP.c | sed -e 's/\"//' -e 's/\"//' | while read name value
do
	if [ \( "$name" != "$value" \) -a \( "$name" != "#" \) ]
	then
		echo "$name	= $value"
	fi
done