NicheStack tk_crnos.h compiling problem

but OS_EVENT is described in 'ucos_ii.h' file so i don't understand why program get error :( i need to do that ethernet connection for my engineer project:(

# ifndef TK_CRNOS_H# define TK_CRNOS_H
# ifndef CHRONOS# error - must define CHRONOS in ipport.h to use this file# endif
extern void TK_OSTaskResume(u_char * Id);
/* define the default priority for all net related tasks */# define  NET_PRIORITY   0  /* not used on ChronOS */
# ifdef NOT_DEF
/* 
 * Altera Niche Stack Nios port modification:
 * OS_PRIO_SELF defined in ucosii.h, as is OS_EVENT
 */
/* Self-ID token for pass to ChronOS primitives */# ifdef ALT_INICHE# include "ucos_ii.h"# else# define OS_PRIO_SELF 0xFF# endif /* ALT_INICHE */
# endif
/* Define the CHRONOS object control TK_ macros...  */
/* macros for task type, entry, and name */# define  TK_ENTRY(name)       void  name(void * parm)# define  TK_OBJECT(name)      u_char   name# define  TK_OBJECT_PTR(name)  u_char * name# define  TK_OBJECT_REF(name)  TK_OBJECT(name)# define  TK_ENTRY_PTR(name)   void(*name)(void*)
# define  TK_THIS              TK_OSTaskQuery()
# ifndef  TK_RETURN_ERROR# define  TK_RETURN_ERROR()   return# endif# ifndef  TK_RETURN_OK# define  TK_RETURN_OK()      return# endif
/*
 * synchronization primitives
 * 
 * Need one or the other of LOCK_NET_RESOURCE/UNLOCK_NET_RESOURCE and
 * ENTER_CRIT_SECTION/EXIT_CRIT_SECTION.  These should be implementable
 * as either functions or macros, so we allow e.g. ipport.h_h to 
 * override these definitions by defining the names as macros.
 * CHRONOS targets generally use LOCK_NET_RESOURCE/UNLOCK_NET_RESOURCE
 * so we default to function declaractions for them.
 */
extern void LOCK_NET_RESOURCE(int res);
extern void UNLOCK_NET_RESOURCE(int res);
extern void irq_Mask(void);
extern void irq_Unmask(void);
# define  ENTER_CRIT_SECTION(p)      irq_Mask()# define  EXIT_CRIT_SECTION(p)       irq_Unmask()
# ifdef NOTDEF
/* set up pointers to CHRONOS semaphores as void * so we don't
 * have to include ChronOS includes in every file in the build. In Addition
 * RXQ_RESID and FREEQ_RESID are not real semaphores, but just placeholders.
 * See the LOCK_NET_RESOURCE() code for details.
 */# ifndef NET_RESID
extern   void *      net_task_sem_ptr;# define  NET_RESID   (net_task_sem_ptr)# endif# ifndef PINGQ_RESID
extern   void *      pingq_sem_ptr;# define  PINGQ_RESID  (pingq_sem_ptr)# endif# ifndef FTPCQ_RESID
extern   void *      ftpcq_sem_ptr;# define  FTPCQ_RESID  (ftpcq_sem_ptr)# endif# ifndef RXQ_RESID
extern   void *      receiveq_sem_ptr;# define  RXQ_RESID   (receiveq_sem_ptr)# endif# ifndef FREEQ_RESID
extern   void *      freeq_sem_ptr;# define  FREEQ_RESID (freeq_sem_ptr)# endif
# endif
/* declare tasks which may need to be accessed by system code */
extern   TK_OBJECT(to_pingcheck);
extern   TK_OBJECT(to_netmain);
extern   TK_OBJECT(to_emailer);
extern   TK_OBJECT(to_ftpclnt);
/* map TK_ macros to CHRONOS: */# define  TK_BLOCK()          OSTaskSuspend(OS_PRIO_SELF)
extern OS_EVENT *rcvdq_sem_ptr;# define  TK_NETRX_BLOCK()    { 
                           INT8U err; 
                           OSSemPend(rcvdq_sem_ptr, TPS, &err); 
                           if ((err != OS_NO_ERR) && (err != OS_TIMEOUT)) 
                                  dtrap(); 
                         }
# define  TK_SLEEP(count)     OSTimeDly(count + 1)
/* (Id) is always of type TK_OBJECT_PTR */# define  TK_WAKE(Id)         OSTaskResume(*(u_char*)(Id))
/* (ev) is always of type TK_OBJECT_REF */# define  TK_WAKE_EVENT(ev)   OSTaskResume((u_char)(ev))
/* Do tk_yield() as a function to avoid pointless delays */
void tk_yield(void);# define TK_YIELD()           tk_yield()
/* For ChronOS SignalPktDemux() is a routine which manually sets the net
 * task to runnable. This is so we can call it from an ISR and not have
 * ChronOS enable interrupts on us.
 */# define  SignalPktDemux()     OSSemPost(rcvdq_sem_ptr)# define  SignalEmailTask()    OSTaskResume(to_emailer)# define  SignalFtpClient()    OSTaskResume(to_ftpclnt)
# endif  /* TK_CRNOS_H */