$OpenBSD: patch-third_party_ffmpeg_libavutil_cpu_c,v 1.4 2016/01/23 18:49:31 robert Exp $
--- third_party/ffmpeg/libavutil/cpu.c.orig.port	Wed Jan 20 21:02:06 2016
+++ third_party/ffmpeg/libavutil/cpu.c	Fri Jan 22 19:58:59 2016
@@ -33,10 +33,7 @@
 #if HAVE_GETPROCESSAFFINITYMASK || HAVE_WINRT
 #include <windows.h>
 #endif
-#if HAVE_SYSCTL
-#if HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
+#if HAVE_SYSCTL && !defined(__OpenBSD__)
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #endif
