--- mess822-0.58/conf-cc.orig	2013-11-23 08:45:32.039787076 +0100
+++ mess822-0.58/conf-cc	2013-11-23 08:45:49.210141421 +0100
@@ -1,3 +1,3 @@
-gcc -O2
+gcc -O2 -include errno.h
 
 This will be used to compile .c files.