CCS C6678 uart库问题

用CCSV7调试UART，编译时报错UART_init， UART_Params_init, UART_open 未定义，在工程设置中添加了uart\lib\c66\release\ti.drv.uart.ae66库之后，前面的错误没有了。但是出现了新的错误：

**** Build of configuration Debug for project clock_TMS320C6678 ****

"D:\\ti\\ccsv7\\utils\\bin\\gmake" -k -j 4 all -O
making ../src/sysbios/sysbios.ae66 ...
gmake[1]: Nothing to be done for 'all'.
making ../src/sysbios/sysbios.ae66 ...
gmake[2]: Nothing to be done for 'all'.
'Building target: clock_TMS320C6678.out'
'Invoking: C6000 Linker'
"D:/ti/ti-cgt-c6000_8.1.3/bin/cl6x" -mv6600 -g --diag_wrap=off --display_error_number --diag_warning=225 -z -m"clock_TMS320C6678.map" -i"D:/ti/ti-cgt-c6000_8.1.3/lib" -i"D:/ti/ti-cgt-c6000_8.1.3/include" --reread_libs --display_error_number --diag_wrap=off --warn_sections --xml_link_info="clock_TMS320C6678_linkInfo.xml" --rom_model -o "clock_TMS320C6678.out" "./clock.obj" "../src/sysbios/BIOS.obj" "../src/sysbios/c62_TaskSupport_asm.obj" "../src/sysbios/c64p_Exception_asm.obj" "../src/sysbios/c64p_Hwi_asm.obj" "../src/sysbios/c64p_Hwi_asm_switch.obj" "../src/sysbios/c64p_Hwi_disp_always.obj" "../src/sysbios/ti_tls_get_tp.obj" "../src/sysbios/timer64_Timer_asm.obj" -l"configPkg/linker.cmd" -l"D:/ti/pdk_c667x_2_0_6/packages/ti/drv/uart/lib/c66/release/ti.drv.uart.ae66" -llibc.a
<Linking>

undefined first referenced
symbol in file
--------- ----------------
UART_config D:/ti/pdk_c667x_2_0_6/packages/ti/drv/uart/lib/c66/release/ti.drv.uart.ae66<UART_drv.oe66>

error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking; "clock_TMS320C6678.out" not built

>> Compilation failure
makefile:151: recipe for target 'clock_TMS320C6678.out' failed
gmake[1]: *** [clock_TMS320C6678.out] Error 1
makefile:147: recipe for target 'all' failed
gmake: *** [all] Error 2

**** Build Finished ****

请问这个错误怎么解决？谢谢！