TI C6748 BIOSPSP 例子程序I2csample（从BIOS C6SDK 2. 0安装而来）CCS6下编译出错

如下错误提示，是工程设置还是什么问题？

Description        Resource        Path        Location        Type
unresolved symbols remain        i2cSample                         C/C++ Problem
errors encountered during linking; "i2cSample.out" not built        i2cSample                         C/C++ Problem
unresolved symbol main, first referenced in D: iccsv6 oolscompilerc6000_7.4.8lib ts6740_elf.lib<args_main.obj>        i2cSample                         C/C++ Problem
unresolved symbol user_i2c_init, first referenced in E:iosWorki2cdriverExi2cDebugconfigPkgpackagecfgi2cSample_pe674.oe674        i2cSample                         C/C++ Problem
unresolved symbol i2cParams, first referenced in E:iosWorki2cdriverExi2cDebugconfigPkgpackagecfgi2cSample_pe674.oe674        i2cSample                         C/C++ Problem
unresolved symbol i2cSampleTask, first referenced in E:iosWorki2cdriverExi2cDebugconfigPkgpackagecfgi2cSample_pe674.oe674        i2cSample                         C/C++ Problem