diff --git a/util.h b/util.h
--- a/util.h
+++ b/util.h
@@ -1,64 +1,74 @@
 /* Standard Pike include files. */
 #include "bignum.h"
 #include "array.h"
 #include "builtin_functions.h"
 #include "constants.h"
 #include "interpret.h"
 #include "mapping.h"
 #include "multiset.h"
 #include "module_support.h"
 #include "object.h"
 #include "pike_macros.h"
 #include "pike_types.h"
 #include "program.h"
 #include "stralloc.h"
 #include "svalue.h"
 #include "threads.h"
 #include "version.h"
 #include "operators.h"
 #include "backend.h"
 #import <Foundation/NSAutoreleasePool.h>
 #import "OC_NSAutoreleasePoolCollector.h"
+#include <ffi/ffi.h>
 
 #if (PIKE_MAJOR_VERSION == 7 && PIKE_MINOR_VERSION == 1 && PIKE_BUILD_VERSION >= 12) || PIKE_MAJOR_VERSION > 7 || (PIKE_MAJOR_VERSION == 7 && PIKE_MINOR_VERSION > 1)
 # include "pike_error.h"
 #else
 # include "error.h"
 # ifndef Pike_error
 #  define Pike_error error
 # endif
 #endif
 
 #define DEBUG 1 
 //#undef DEBUG 
 
 #define LOG(fmt, ...) \
             do { if (DEBUG) fprintf(stderr, fmt, __VA_ARGS__); } while (0)
 
 #ifndef ARG
 /* Get argument # _n_ */
 #define ARG(_n_) Pike_sp[-((args - _n_) + 1)]
 #endif
 
 struct svalue * ptr_to_svalue(void * ptr, char * type);
 
 unsigned piobjc_type_size(char** type_encoding);
 void low_f_objc_runner_method(ffi_cif* cif, void* resp, void** args, void* userdata);
 
 id id_from_object(struct object * o);
 struct object * new_nsobject_object(id obj);
 struct svalue * get_func_by_selector(struct object * pobject, SEL aSelector);
 void piobjc_set_return_value(id sig, id invocation, struct svalue * svalue);
 id get_NSObject_from_Object(struct object *o);
 
 struct svalue * low_id_to_svalue(id obj, int prefer_native);
 
 char * get_signature_for_func(struct svalue * func, SEL selector, struct program * prog);
 id unwrap_objc_object(struct object * o);
 char * pike_signature_from_nsmethodsignature(id nssig, int * lenptr);
 struct object * new_method_runner(struct object * obj, SEL selector);
 int get_num_pointer_return_arguments(struct objc_method * nssig);
 void push_complex_result(void * result, int len, char * signature);
 void make_complex_object(void * result, int len, char * signature);
 void push_complex_result(void * result, int len, char * signature);
 void make_complex_object(void * result, int len, char * signature);
+int push_objc_pointer_return_type(struct objc_method * method, void ** margs);
+void * svalue_to_ptr(struct svalue * sval, char * type);
+BOOL isNSNil(struct svalue * sv);
+int push_objc_types(NSMethodSignature* sig, NSInvocation* invocation);
+struct svalue * get_class_func_by_selector(struct program * prog, SEL aSelector);
+BOOL has_objc_class_method(id obj, SEL aSelector);
+char * get_signature_for_class_func(struct svalue * func, SEL selector, struct program * prog);
+BOOL has_objc_method(id obj, SEL aSelector);
+int push_objc_type(char * type, void * buf);