Index: rutil/Crc32.cxx
--- rutil/Crc32.cxx.orig
+++ rutil/Crc32.cxx
@@ -75,6 +75,10 @@ Permission is granted to anyone to use this software f
   #endif
 #endif
 
+#if !defined(__BYTE_ORDER)
+#define __BYTE_ORDER __BYTE_ORDER__
+#endif
+
 // abort if byte order is undefined
 #if !defined(__BYTE_ORDER)
 #error undefined byte order, compile with -D__BYTE_ORDER=1234 (if little endian) or -D__BYTE_ORDER=4321 (big endian)
