patch by Guillaume Lecerf <foxcore@gmail.com> 
see http://sourceforge.net/mailarchive/message.php?msg_id=37594448

--- lcd4linux-0.10.0.orig/plugin_wireless.c	2006-12-04 18:11:41.000000000 +0100
+++ lcd4linux-0.10.0/plugin_wireless.c	2006-12-04 18:12:01.000000000 +0100
@@ -92,6 +92,7 @@
 
 #include <sys/ioctl.h>
 #include <net/if_arp.h>
+#include <linux/if.h>
 #include <linux/wireless.h>
 #include <math.h>