@@ -7,14 +7,10 @@
  * This file is part of libobjfw. It may be distributed under the terms of the
  * Q Public License 1.0, which can be found in the file LICENSE included in
  * the packaging of this file.
  */
 
-#ifndef OF_CONFIG_H
-#error "You need to have the objfw defines in your config.h and include it!"
-#endif
-
 #ifdef __GNUC__
 #define OF_INLINE inline __attribute__((always_inline))
 #define OF_LIKELY(cond) __builtin_expect(!!(cond), 1)
 #define OF_UNLIKELY(cond) __builtin_expect(!!(cond), 0)
 #else
@@ -21,11 +17,11 @@
 #define OF_INLINE inline
 #define OF_LIKELY(cond) cond
 #define OF_UNLIKELY(cond) cond
 #endif
 
-#ifdef OF_BIG_ENDIAN
+#if defined(OF_BIG_ENDIAN)
 static OF_INLINE void
 OF_BSWAP_V(uint8_t *buf, size_t len)
 {
 	uint32_t t;
 
@@ -34,12 +30,14 @@
 		    ((uint32_t)buf[1] << 8 | buf[0]);
 		*(uint32_t*)buf = t;
 		buf += sizeof(t);
 	}
 }
-#else
+#elif defined(OF_LITTLE_ENDIAN)
 #define OF_BSWAP_V(buf, len)
+#else
+#error Please define either OF_BIG_ENDIAN or OF_LITTLE_ENDIAN!
 #endif
 
 #define OF_ROL(val, bits) \
 	(((val) << (bits)) | ((val) >> (32 - (bits))))