请问ccs5.2编译tms320vc5502时报错是什么原因？

Description Resource Path Location Type #10010 errors encountered during linking; "uart11.out" not built uart11    C/C++ Problem
Description Resource Path Location Type #10234-D  unresolved symbols remain uart11    C/C++ Problem
Description Resource Path Location Type unresolved symbol __CSL_init, first referenced in ./main_uart1.obj uart11    C/C++ Problem unresolved symbol _CSL5502_LIB_, first referenced in ./main_uart1.obj uart11    C/C++ Problem
unresolved symbol _UART_read, first referenced in ./main_uart1.obj uart11    C/C++ Problem
unresolved symbol _UART_setup, first referenced in ./main_uart1.obj uart11    C/C++ Problem
unresolved symbol _UART_write, first referenced in ./main_uart1.obj uart11    C/C++ Problem ，
源码用的是TI官网上C55xxcsl中的uart1.
参考过群里的帖子（CSL user guide第2.3 Compiling and Linking with the CSL Using Code Composer Studio章节, 有详细的步骤告诉你怎么添加csl库.），由于对ccs不熟，里面介绍的不是在ccs5.2上的错做，所以，没成功。求指点