Establish CRCLoader project (eclipse) from exiting ant build file failed

Downloaed SVN latest source code, and tried to establish CRCLoader project, the project is created, but it has a lot of errors. Most of errors are from PDO related package. I am wondering if there is one task which is pre-required but I have not execute it yet?

the CRCCommon project is successful to be established from existing build file.