RL78 IAR操作FDL库报错误

Error[Li005]: no definition for "_PFDL_Close" [referenced from E:\BaiduSyncdisk\Project2\R5F100LEA\IAR\Debug\Obj\m_pfdl.o]
Error[Li005]: no definition for "_PFDL_Execute" [referenced from E:\BaiduSyncdisk\Project2\R5F100LEA\IAR\Debug\Obj\m_pfdl.o]
Error[Li005]: no definition for "_PFDL_Handler" [referenced from E:\BaiduSyncdisk\Project2\R5F100LEA\IAR\Debug\Obj\m_pfdl.o]
Error[Li005]: no definition for "_PFDL_Open" [referenced from E:\BaiduSyncdisk\Project2\R5F100LEA\IAR\Debug\Obj\m_pfdl.o]
Error while running Linker

IAR版本1.40.1

库FDLT04_V105_R5F100xL_IAR120

该如何解决?