diff --git a/lib/cpp/src/protocol/TProtocol.h b/lib/cpp/src/protocol/TProtocol.h
index 47d74f8..a7560ca 100644
--- a/lib/cpp/src/protocol/TProtocol.h
+++ b/lib/cpp/src/protocol/TProtocol.h
@@ -25,6 +25,16 @@
 #include <endian.h>
 #endif
 
+#ifndef __BYTE_ORDER
+# if defined(BYTE_ORDER) && defined(LITTLE_ENDIAN) && defined(BIG_ENDIAN)
+#  define __BYTE_ORDER BYTE_ORDER
+#  define __LITTLE_ENDIAN LITTLE_ENDIAN
+#  define __BIG_ENDIAN BIG_ENDIAN
+# else
+#  error "Cannot determine endianness"
+# endif
+#endif
+
 #if __BYTE_ORDER == __BIG_ENDIAN
 # define ntohll(n) (n)
 # define htonll(n) (n)