$NetBSD: patch-ac,v 1.3 2017/06/14 12:17:30 jperkin Exp $

Use system macros if available.

--- bytesex.h.orig	2003-08-31 17:23:48.000000000 +0000
+++ bytesex.h
@@ -7,11 +7,25 @@
 #ifndef ARS_BYTESEX_H
 #define ARS_BYTESEX_H
 
-#if 	defined(__i386__) \
+#ifdef __NetBSD__
+#include <sys/endian.h>
+#endif
+
+#if defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && (_BYTE_ORDER == _LITTLE_ENDIAN - 0)
+#define BYTE_ORDER_LITTLE_ENDIAN
+#elif defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && (__BYTE_ORDER == _LITTLE_ENDIAN - 0)
+#define BYTE_ORDER_LITTLE_ENDIAN
+#elif defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+#define BYTE_ORDER_LITTLE_ENDIAN
+#elif	defined(__i386__) || defined(__LITTLE_ENDIAN__) \
 	|| defined(__alpha__) \
 	|| (defined(__mips__) && (defined(MIPSEL) || defined (__MIPSEL__)))
 #define BYTE_ORDER_LITTLE_ENDIAN
-#elif 	defined(__mc68000__) \
+#elif defined(_BYTE_ORDER) && defined(_BIG_ENDIAN) && (_BYTE_ORDER == _BIG_ENDIAN - 0)
+#define BYTE_ORDER_BIG_ENDIAN
+#elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && (__BYTE_ORDER == _BIG_ENDIAN - 0)
+#define BYTE_ORDER_BIG_ENDIAN
+#elif  defined(__mc68000__) \
 	|| defined (__sparc__) \
 	|| defined (__sparc) \
 	|| defined (__PPC__) \
@@ -19,7 +33,7 @@
 	|| (defined(__mips__) && (defined(MIPSEB) || defined (__MIPSEB__)))
 #define BYTE_ORDER_BIG_ENDIAN
 #else
-# error can not find the byte order for this architecture, fix bytesex.h
+#error can not find the byte order for this architecture, fix bytesex.h
 #endif
 
 #endif /* ARS_BYTESEX_H */