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build variable问题

工程出现这几个warning:

Description Resource Path Location Type
Build variable 'C5500_CSL_CG_ROOT' cannot be resolved.  pll1 properties Problems
  Description Resource Path Location Type
Build variable 'C5500_CSL_CG_ROOT' cannot be resolved.  pll1  properties Problems
  Description Resource Path Location Type
Build variable 'XDAIS_CG_ROOT' cannot be resolved.  pll1  properties Problems
  Description Resource Path Location Type
Invalid project path: Include path not found (\packages\ti\xdais). pll1  pathentry Path Entry Problem

发现这几个东西就是在工程的的include option当中的,如果删去,就会报错,但是留着,有warning ,请问应该如何解决呢?