+#include "portable.h"
+
+#ifdef HAVE_INTTYPES_H
+# define SHA2_USE_INTTYPES_H 1
+#endif
+
+#ifndef LITTLE_ENDIAN
+# define LITTLE_ENDIAN 1234
+#endif
+#ifndef BIG_ENDIAN
+# define BIG_ENDIAN 4321
+#endif
+#ifndef BYTE_ORDER
+# ifdef WORDS_BIGENDIAN
+# define BYTE_ORDER BIG_ENDIAN
+# else
+# define BYTE_ORDER LITTLE_ENDIAN
+# endif
+#endif
+