$OpenBSD: patch-backend_kvs40xx_h,v 1.1 2015/12/21 08:40:00 ajacoutot Exp $
--- backend/kvs40xx.h.orig	Mon Dec 21 09:32:49 2015
+++ backend/kvs40xx.h	Mon Dec 21 09:33:08 2015
@@ -9,6 +9,7 @@
 */
 
 #include "../include/sane/config.h"
+#include <pthread.h>
 #include <semaphore.h>
 
 #undef  BACKEND_NAME
