PIC C18 erkennt keine Variablen

#include <p18f2410.h>

#pragma config OSC  = INTIO67  // Interner Oszillator, Port function on RA6 u. RA7

#pragma config WDT  = OFF    // Watchdog Timer Off

#pragma config PWRT = ON

#pragma code

// **************************************************************************************

// init: Initialisierung des PIC

// **************************************************************************************

void init(void)

{

  // USART

  BRGH = 1;        // 9600 Baud @ 4 Mhz

  SPBRG = 25;

  SYNC = 0;

  SPEN = 1;        // Serielles Port Einschalten

  CREN = 1;        // Continious Receive Einschalten

  TXEN = 1;        // Transmit einschalten

  TRISB = 0x00; 

} //init

// **************************************************************************************

// rs232_send: Sendet ein Zeichen über die Serielle Schnittstelle

// **************************************************************************************

void rs232_send(char x)

{

  while (!TXIF);      // warten bis Senderegister frei ist

  TXREG = x;

} //init

// **************************************************************************************

// main: Hauptprogramm

// **************************************************************************************

void main(void)

{

  init();

}

main.c:33:Error [1105] symbol 'BRGH' has not been defined

main.c:33:Error [1101] lvalue required

main.c:35:Error [1105] symbol 'SYNC' has not been defined

main.c:35:Error [1101] lvalue required

main.c:37:Error [1105] symbol 'SPEN' has not been defined

main.c:37:Error [1101] lvalue required

main.c:38:Error [1105] symbol 'CREN' has not been defined

main.c:38:Error [1101] lvalue required

main.c:40:Error [1105] symbol 'TXEN' has not been defined

main.c:40:Error [1101] lvalue required

main.c:51:Error [1105] symbol 'TXIF' has not been defined