Added handling of floppy location parameter.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@227 a95241bf-73f2-0310-859d-f6bbb57e9c96

configure

@@ -1,10 +1,61 @@
 #!/bin/sh
 #
-# configure
+# configure [ --floppy <floppy location> ]
 #
 # No parameters for now.
 
+# usage
+#
+# Prints usage.
+#
+usage()
+{
+	cat << EOF
+
+Usage: $0 <options>
+options:
+  --floppy <floppy location>    Specifies the location of the floppy
+                                (device or image).
+  --help                        Prints out this help.
+EOF
+}
+
+# assertparam
+#
+# Checks whether at least one parameter is left.
+#
+assertparam()
+{
+	if [ $2 \< 2 ]; then
+		echo $0: \`$1\': Parameter expected.
+		exit 1
+	fi
+}
+
+# default parameter values
+#
 platform=`uname`
+floppy=
+
+# parse parameters
+#
+while [ $# \> 0 ] ; do
+	case "$1" in
+		--floppy)		assertparam "$1" $#; floppy=$2; shift 2;;
+		--help | -h)	usage; exit 0;;
+		*)				echo Invalid argument: \`$1\'; exit 1;;
+	esac
+done
+
+# check parameters
+#
+if [ -n "$floppy" ]; then
+	case "$floppy" in
+		/*)	;;
+		*)	echo "Warning: non-absolute floppy path. Parameter ignored.";
+			floppy=;;
+	esac
+fi
 
 # BeOS
 if [ "${platform}" == "BeOS" ] ; then
@@ -33,5 +84,6 @@ cat << EOF > BuildConfig
 # BuildConfig
 # Note: This file has been automatically generated by configure.
 
+FLOPPY_PATH	= "$floppy" ;
 GCC_PATH	= ${GCC_PATH} ;
 EOF