You have to build it.   Since you are asking about it, you probably don't have much chance of successfully building it.   Probably best just to wait for the binaries.   If you are going to build it you have to get the correct toolchain in place as well as the correct versions of 3rd party libraries.   To figure out what you need you need to look at the make files or project files depending on what the source includes.   It is often much more involved that it sounds.   Even if someone provides step by step instructions there can be many pitfalls.