I really need an easy to use build tool which supports multiple languages with strong Java support. I have tried Scons but found the Java support lacking. Is there anything else out there? I'm not excited about learning yet another build tool. Also, I really don't want a build tool which is difficult to use without an IDE since I use emacs and will be writing the build scripts by hand.
Edit: When I said general purpose I meant a build tool that works with many languages. I'd like to save myself the time spent learning a new build system for every languages I use.