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$NetBSD: patch-js_src_jscpucfg.h,v 1.1 2013/11/13 13:27:45 ryoon Exp $
--- mozilla/js/src/jscpucfg.h.orig 2012-08-25 00:31:12.000000000 +0000
+++ mozilla/js/src/jscpucfg.h
@@ -44,6 +44,21 @@
# define IS_BIG_ENDIAN 1
# endif
+#elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__MirBSD__) || defined(__DragonFly__)
+#include <sys/endian.h>
+
+#if defined(_BYTE_ORDER)
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+#define IS_LITTLE_ENDIAN 1
+#undef IS_BIG_ENDIAN
+#elif _BYTE_ORDER == _BIG_ENDIAN
+#undef IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#endif
+#else /* !defined(_BYTE_ORDER) */
+#error "sys/endian.h does not define _BYTE_ORDER. Cannot determine endianness."
+#endif
+
#elif defined(JS_HAVE_ENDIAN_H)
# include <endian.h>
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