diff --git a/ruamoko/include/Runtime.h b/ruamoko/include/Runtime.h
new file mode 100644
index 000000000..3fa9cc2c4
--- /dev/null
+++ b/ruamoko/include/Runtime.h
@@ -0,0 +1,77 @@
+#ifndef __ruamoko_Runtime_h_
+#define __ruamoko_Runtime_h_
+
+#define INT_MAX		2147483648
+#define INT_MIN		(-INT_MAX - 1)
+
+#define UINT_MAX 	4294967295
+
+enum {
+	NotFound = INT_MAX	///< A value indicating a requested item can't be found.
+};
+
+/**
+	Standard boolean type
+*/
+typedef enum {
+	NO = 0,		///< the false value
+	YES			///< a true value
+} BOOL;
+
+@extern void obj_error (id object, integer code, string fmt, ...);
+@extern void obj_verror (id object, integer code, string fmt, @va_list args);
+//obj_error_handler obj_set_error_handler (objc_error_handler func);
+@extern IMP obj_msg_lookup (id receiver, SEL op);
+@extern IMP obj_msg_lookup_super (Super class, SEL op);
+@extern @param obj_msg_sendv (id receiver, SEL op, @va_list args);
+@extern (void []) obj_malloc (integer size);
+@extern (void []) obj_atomic_malloc (integer size);
+@extern (void []) obj_valloc (integer size);
+@extern (void []) obj_realloc (void [] mem, integer size);
+@extern (void []) obj_calloc (integer nelem, integer size);
+@extern void obj_free (void [] mem);
+//(void []) obj_get_uninstalled_dtable (void);
+
+@extern Class obj_get_class (string name);
+@extern Class obj_lookup_class (string name);
+//Class obj_next_class (void [][] enum_stage);
+
+@extern string sel_get_name (SEL selector);
+@extern string sel_get_type (SEL selector);
+@extern SEL sel_get_uid (string name);
+//@extern SEL sel_get_any_uid (string name);
+//@extern SEL sel_get_any_typed_uid (string name);
+//@extern SEL sel_get_typed_uid (string name, string type);
+@extern SEL sel_register_name (string name);
+//@extern SEL sel_register_typed_name (string name, string type);
+@extern BOOL sel_is_mapped (SEL aSel);
+
+@extern Method class_get_class_method (Class class, SEL aSel);
+@extern Method class_get_instance_method (Class class, SEL aSel);
+@extern Class class_pose_as (Class imposter, Class superclass);
+@extern id class_create_instance (Class class);
+@extern string class_get_class_name (Class class);
+@extern integer class_get_instance_size (Class class);
+@extern Class class_get_meta_class (Class class);
+@extern Class class_get_super_class (Class class);
+@extern integer class_get_version (Class class);
+@extern BOOL class_is_class (Class class);
+@extern BOOL class_is_meta_class (Class class);
+@extern void class_set_version (Class class, integer version);
+@extern (void []) class_get_gc_object_type (Class class);
+@extern void class_ivar_set_gcinvisible (Class class, string ivarname, BOOL gcInvisible);
+
+@extern IMP method_get_imp (Method method);
+@extern IMP get_imp (Class class, SEL sel);
+
+@extern id object_copy (id object);
+@extern id object_dispose (id object);
+@extern Class object_get_class (id object);
+@extern string object_get_class_name (id object);
+@extern Class object_get_meta_class (id object);
+@extern Class object_get_super_class (id object);
+@extern BOOL object_is_class (id object);
+@extern BOOL object_is_instance (id object);
+@extern BOOL object_is_meta_class (id object);
+
+#endif	//__ruamoko_Runtime_h_