Good news, fellows!
I've tried to build fheroes2 for harmattan too and have actually managed to do it, see attached screenshots.

But I have a few questions:
1) Touchscreen doesn't work properly - mouse pointer is displaced a bit and has some post touch movement effect.
I haven't touched any original source code, do I need this for fix? I've played with config file but still no luck. I'm not familiar with SDL input system.
2) on the second screenshot you can see these graphic bugs right? there's something wrong with animation
3) Sometimes some sounds (like constructing a new building in town) are not played just once but looped.
I had some difficulties with SDL mixer (error linking some ogg related libs, maybe you know what package I need?) and as it was an optional feature I built game without it for now. Could this cause this problem?

As soon as I manage to build something pretty stable and nice I'll provide it on my meego apps page