diff --git libavutil/avutil.h libavutil/avutil.h
index e6ebb6c..4698ee8 100644
--- libavutil/avutil.h
+++ libavutil/avutil.h
@@ -159,6 +159,13 @@
  * @}
  */
 
+/* MEANX
+ * - */
+#define ASMALIGN(ZEROBITS) ".p2align " #ZEROBITS "\n\t"
+/* /MEANX
+ */
+
+
 
 /**
  * @addtogroup lavu_ver
