$OpenBSD: patch-src_include_R_ext_eventloop_h,v 1.4 2014/05/20 11:02:12 dcoppa Exp $
--- src/include/R_ext/eventloop.h.orig	Fri May  2 11:26:26 2014
+++ src/include/R_ext/eventloop.h	Fri May  2 11:26:56 2014
@@ -33,6 +33,7 @@
 #endif
 /* NOTE: Needed at least on FreeBSD so that fd_set is defined. */
 # include <sys/types.h>
+# include <sys/time.h>
 #endif
 
 #ifdef  __cplusplus
