$NetBSD: patch-ac,v 1.4 2014/09/24 11:10:38 jperkin Exp $

--- aplay/formats.h.orig	2013-07-09 15:28:37.000000000 +0000
+++ aplay/formats.h
@@ -1,8 +1,20 @@
 #ifndef FORMATS_H
 #define FORMATS_H		1
 
+#if defined(__NetBSD__) || defined(__DragonFly__)
+#include <sys/endian.h>
+#define bswap_16 bswap16
+#define bswap_32 bswap32
+#define bswap_64 bswap64
+#elif defined(__sun)
+#include <sys/byteorder.h>
+#define bswap_16 BSWAP_16
+#define bswap_32 BSWAP_32
+#define bswap_64 BSWAP_64
+#else
 #include <endian.h>
 #include <byteswap.h>
+#endif
 
 /* Definitions for .VOC files */