关于am335x的串口，从TI官网上下载的am335x_sysbios_ind_sdk_1.1.0.6，安装后编译里面的uartehco例程出现下面错误，请帮忙看一下是怎么回事

error: file    "C:/ti/am335x_sysbios_ind_sdk_1.1.0.6/sdk/starterware\binary\armv7a\cgt_ccs\    am335x\system_config\system.lib<cp15.obj>" has a Tag_ABI_VFP_args attribute    value of "0" that is different than one previously seen ("1"); combining    incompatible files

 undefined           first referenced  

  symbol                 in file      

   ---------           ----------------

  ConsoleUtilsPrintf  ./uartEcho.obj 

  ConsoleUtilsScanf   ./uartEcho.obj   

  ConsoleUtilsSetType ./uartEcho.obj 

error: unresolved symbols remain error: errors encountered during linking;    "C:/ti/am335x_sysbios_ind_sdk_1.1.0.6/sdk/starterware/binary/armv7a/cgt_ccs/    am335x/evmskAM335x/uart/Debug/uartEcho.out" not built