Hi, I must tell you that there is a "small" bug in the lxr, if you choose mysql as the DB. mysql taken "release" as it's keyword( I guess ), so in the file initdb-mysql, you will encounter syntax error. Because that file use 'release' as a table column. I've tried to rename it to something else, but the perl scripts of LXR complain for sql syntax error. If you familiar with perl+mysql, I guess that will not take you much time. Good luck! By the way: I suggest you to take a small scale source code package as the testing object. If you follow some docs from google, it will parse the Linux kernel code. It is a time-consuming works!