STC8 USB CDC 加入LIB及相关代码后错误，求解(已解决）

wppp***

加入USB CDC LIB库以后，出现如下错误代码，求解，谢谢。
Rebuild target 'Target 1'
compiling main.C...
compiling system.c...
compiling delay.c...
compiling ST7735.C...
linking...
*** ERROR L127: UNRESOLVED EXTERNAL SYMBOL
    SYMBOL:  USER_STCISPCMD
    MODULE:  .\stc_usb_cdc_8h_xdata.LIB (USB)
*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL
    SYMBOL:  USER_STCISPCMD
    MODULE:  .\stc_usb_cdc_8h_xdata.LIB (USB)
    ADDRESS: 1000E11H
*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL
    SYMBOL:  USER_STCISPCMD
    MODULE:  .\stc_usb_cdc_8h_xdata.LIB (USB)
    ADDRESS: 1000E38H
*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL
    SYMBOL:  USER_STCISPCMD
    MODULE:  .\stc_usb_cdc_8h_xdata.LIB (USB)
    ADDRESS: 1000E92H
Program Size: data=9.3 xdata=599 const=131 code=6732
Target not created.
Build Time Elapsed:  00:00:01

wppp***

找到原因了，忽略了啥 ：，忽略了下面的定义：

char *USER_DEVICEDESC = NULL;
char *USER_PRODUCTDESC = NULL;
char *USER_STCISPCMD = "@STCISP#";