ObjFW  Diff

#define NO  (BOOL)0

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);
extern BOOL class_conformsToProtocol(Class, Protocol*);
extern IMP class_getMethodImplementation(Class, SEL);