First though I would also suggest that you verify that the software you are trying to build has a hope of compiling under ARM else you might end up spending a lot of time on something which will be very difficult to achieve.  It is not at all uncommon for source code to need significant porting to run on different architectures (i.e., ARM vs. x86) and it not to have been done.  A cursory glance at the project indicates to me that it probably does not, or at least not fully.