--- a/src/lib/err.h	Thu Nov 20 01:16:24 2008 +0200
+++ b/src/lib/err.h	Fri Nov 28 23:46:11 2008 +0200
@@ -1,6 +1,8 @@
 #ifndef LIB_ERR_H
 #define LIB_ERR_H
 
+#include <errno.h>
+
 /*
  * err_t is always positive
  */