Oh, cool. I remember trying to write native apps for my Nokia 5800 and the SDK being... not very good. Also I lacked experience and a sufficiently powerful computer. Also I don't think the thing was documented much, either that or I didn't know where to look for the docs. And the bizarre class naming scheme. And the bizarre dozen types of strings. And the most bizarre custom error handling mechanism (iirc it was called "leave") instead of C++ exceptions.

I do wonder if this code is enough to build a working firmware image for a Nokia phone, but most probably some of the required parts are missing.