@@ -167,12 +167,13 @@
 typedef void (*objc_uncaught_exception_handler)(id);
 
 extern SEL sel_registerName(const char*);
 extern const char* sel_getName(SEL);
 extern BOOL sel_isEqual(SEL, SEL);
-extern Class objc_get_class(const char*);
-extern Class objc_lookup_class(const char*);
+extern id objc_lookUpClass(const char*);
+extern id objc_getClass(const char*);
+extern id objc_getRequiredClass(const char*);
 extern const char* class_getName(Class);
 extern Class class_getSuperclass(Class);
 extern BOOL class_isKindOfClass(Class, Class);
 extern unsigned long class_getInstanceSize(Class);
 extern BOOL class_respondsToSelector(Class, SEL);