@@ -43,6 +43,7 @@ namespace util {

 #if (defined(PWIZ_GCC) && defined(__BYTE_ORDER) && __BYTE_ORDER==__LITTLE_ENDIAN) || \

+    (defined(PWIZ_GCC) && defined(__BYTE_ORDER__) && __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__) || \

     (defined(__DARWIN_BYTE_ORDER) && __DARWIN_BYTE_ORDER==__DARWIN_LITTLE_ENDIAN) || \

     (defined(__LITTLE_ENDIAN__)) || \

     (defined(__MINGW32__)) || \

@@ -52,7 +53,8 @@ namespace util {

 #endif

-#if (defined(PWIZ_GCC) && defined(__BYTE_ORDER) && __BYTE_ORDER==__BIG_ENDIAN)

+#if (defined(PWIZ_GCC) && defined(__BYTE_ORDER) && __BYTE_ORDER==__BIG_ENDIAN) || \

+    (defined(PWIZ_GCC) && defined(__BYTE_ORDER__) && __BYTE_ORDER__==__ORDER_BIG_ENDIAN__)

 #define PWIZ_BIG_ENDIAN

 #endif