$OpenBSD: patch-third_party_ffmpeg_libavutil_cpu_c,v 1.5 2017/03/14 12:18:54 robert Exp $
--- third_party/ffmpeg/libavutil/cpu.c.orig.port	Thu Mar  9 21:05:23 2017
+++ third_party/ffmpeg/libavutil/cpu.c	Fri Mar 10 07:46:25 2017
@@ -39,10 +39,7 @@
 #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
