Index: kernel/generic/include/log.h
===================================================================
--- kernel/generic/include/log.h	(revision cde999aca79219e8751af76502001a86d411d176)
+++ kernel/generic/include/log.h	(revision facacc712e3d87d7301754b109c9582ef1ef29e4)
@@ -36,4 +36,5 @@
 #define KERN_LOG_H_
 
+#include <errno.h>
 #include <stdarg.h>
 #include <stddef.h>