--- a/config.h.in	Fri May 02 21:04:20 2014 +0200
+++ b/config.h.in	Fri May 02 23:14:50 2014 +0200
@@ -9,3 +9,6 @@
 /* According to Sun we MUST define this in the source */
 #define _REENTRANT 1
 
+/* Define if you have the <wiringPi.h> header file. */
+#undef HAVE_WIRINGPI_H
+