你好！我在编译edma3_drv_bios6_c6678_st_sample这个工程时，遇到了这些错误：
Description Resource Path Location Type
unresolved symbol ti_sysbios_BIOS_start__E, first referenced in ./main.obj edma3_drv_bios6_c6678_st_sample C/C++ Problem
Description Resource Path Location Type
unresolved symbol ti_sysbios_family_c64p_EventCombiner_disableEvent__E, first referenced in C:/ti/edma3_lld_02_11_05_02/packages/ti/sdo/edma3/drv/sample/lib/c6678-evm/66/debug/edma3_lld_drv_sample.ae66<sample_cs.oe66> edma3_drv_bios6_c6678_st_sample C/C++ Problem
Description Resource Path Location Type
unresolved symbol ti_sysbios_family_c64p_EventCombiner_dispatchPlug__E, first referenced in C:/ti/edma3_lld_02_11_05_02/packages/ti/sdo/edma3/drv/sample/lib/c6678-evm/66/debug/edma3_lld_drv_sample.ae66<sample_c6678_int_reg.oe66> edma3_drv_bios6_c6678_st_sample C/C++ Problem
这是什么原因导致的，求指教，谢谢！