XC8编译错误

你好，我想在PIC18F4620上启用USAT RX中断。每当我提到PrI1BITS.RCIF时，就会得到以下错误：如果我注释了这行，它就成功编译了。这是代码：编译器是XC8 V1.44，MPLAB X IDE 4.01。OS是LimuxMin 18.3，64位你能告诉我我做错了什么吗？提前感谢！



      以下为原文

    Hi,
I'm trying to enable USART Rx interrupt on PIC18F4620.
Whenever I refer to PIR1bits.RCIF, I get the following error:
/opt/microchip/xc8/v1.44/include/pic18f4620.h:2848: error: (1098) conflicting declarations for variable "_PIR1bits" (/opt/microchip/xc8/v1.44/include/pic18f4620.h:2594)
(908) exit status = 1

If I comment out that line, it compiles successfully.  This is the code:
void Init_peripherals(){
    OpenI2C( MASTER, SLEW_OFF);
    SSPADD = 19;//100kHz Baud clock @8MHz
    TXSTA = 0x24; // SYNC=0
    RCSTA = 0x10;
    BAUDCON = 0x08;
    SPBRGH = 0;
    SPBRG = 16;
   
    INTCONbits.GIE = 0; // disable all interrupts
    PIE1bits.RCIE = 1; // enable UART Rx interrupt
    INTCONbits.PEIE = 1; // enable peripheral interrupts
    RCONbits.IPEN = 1; // enable high priority interrupts
    IPR1bits.RCIP = 1; // enable high priority for Rx interrupt
    INTCONbits.GIE = 1; // enable global interrupts
    PIR1bits.RCIF = 0; // reset flag
    RCSTAbits.SPEN = 1;
}
The compiler is XC8 v1.44, MPLAB X IDE 4.01. OS is LinuxMint 18.3, 64 bit

Can you please tell what am I doing wrong? Thanks in advance!