You can clone the repository by clicking on Clone in Desktop and follow the instructions. Make sure to select the clang branch or it will fail.
After that you simply enter
in a terminal window and hope for the best. Should compile fine (still 64-bit only).
Please note that this would not have been possible without the help of Andy due to my main SSD hardware failure. Thanks man! Also. My initial commit may not even work for you, on your Mac Pro. In fact I am pretty sure that it doesn’t, because only 64-bit compiles, but my time was up so… later folks!