--- screen-4.0.3.orig/sched.h	2007-03-19 19:35:12 +0000
+++ screen-4.0.3.orig/sched.h	2007-03-19 19:33:33 +0000
@@ -1,3 +1,5 @@ 
+#ifndef _SCHED_H
+#define _SCHED_H
 /* Copyright (c) 1993-2002
  *      Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
  *      Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
@@ -22,6 +24,8 @@ 
  * $Id: sched.h,v 1.1.1.1 1993/06/16 23:51:13 jnweiger Exp $ FAU
  */
 
+#include <sys/types.h>
+
 struct event
 {
   struct event *next;
@@ -41,3 +45,4 @@ 
 #define EV_READ		1
 #define EV_WRITE	2
 #define EV_ALWAYS	3
+#endif