+2  A: 

the build.xml does not have a default target. try this instead

ant compile

edit: changed target

akf
I tried running 'ant all' but got a BUILD FAILED error stating that Target "all" does not exist in the project.
John
@johnmurray, i have changed the target, please give it a try.
akf
A: 

You'll also need Apache Ivy. We've changed the build process for some time now; it now uses Ivy instead of manual dependency management.

Attila Szegedi
Can I add ivy simply by downloading the ivy JAR file and adding it to the ant/lib directory?
John
A: 

After installing ivy, running

ant compile

worked just fine.

Thank you!

John