Ftpserver build in debug mode, using mvn

[Janardhanan, Ajith \(AJANARDH\)]

I am using ftpserver ftplet libraries to run embedded ftpserver process
in my program. I am running the following commands to build the apache
libs. 
 cd ftpserver/
 maven-2.0.5/bin/mvn -e install 

How should I build the libs so as to have the debug information that a
debugger can use.

Thanks
Ajith