Thanks for your interest in the BlackBerry port of Wesnoth!
I'm afraid this isn't quite ready yet. Wesnoth requires quite a few dependency libraries that are not yet available to be released. I'm working on this as fast as I can, I'm very sorry for the delay.
Once the dependencies are up, the basic process of building is to check out all of the libraries from their separate repositories and import them as projects into the NDK. Then you should be able to build all of them in sequence.
The list of dependencies required is as follows: