=== modified file 'demo.c'
--- demo.c	2011-08-25 21:49:51 +0000
+++ demo.c	2011-08-18 10:20:41 +0000
@@ -1,8 +1,5 @@
-// we want optarg
-#define _XOPEN_SOURCE 600
-
 #include <stdio.h>
-#include <unistd.h>
+#include <getopt.h>
 #include <errno.h>
 
 #include "termkey.h"