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Can't use CSL libiary in CCS 6.1( TCI6630K2L, 66AK2L06)

Hi all,

     I have added *.h path into Progect->Properities->Build->C6000 Compiler -> Include Options; And the CSL libiary also is added into  Progect->Properities->Build->C6000 Linker , As following in attachement:

However, when I builded a program, as followed, which uses the CSL function.

#include <ti/csl/csl.h>

#include <ti/csl/cslr_cgem.h>

#include <ti/csl/soc.h>

#include <ti/csl/csl_cache.h>
 
 int main(void) {

//CACHE_SetpSize(1);

CACHE_setL1PSize(1); // Configure 4K Cache Size

The CCS showed the following errors:
From the complier script, I can know that CSL libiary has been included. So the error really confused me.
Any help is appreciated. Thanks a lot.
Chas