Thanks Luca (compatriot? )
I tried in lazarus forum, but no replies... it seems that arm-linux hasn't interest between lazarus developers...

I'll try in mailing list.

However there are some tutorials about this that seems to work... but these are virtually all outdated (e.g. Zaurus)

There is also a project, called CodeTyphon that promises to cross compile in arm-linux, but at the moment of linking it returns -lX11 not found...

Finally, a lot of people say that can build for arm-linux... but I never found a tutorial or guide that works.

Thanks