Is SU2_HOME really needed? What for?
 

I've built SU2 from source (kudos to the developers, because it's notably easier to build than other CFD packages), and it was installed into the prefix I specified.

Now the docs say I must define SU2_RUN as the prefix where all the binaries were installed, and SU2_HOME as the path to the SU2 source code... but... do you really need to define SU2_HOME?

I mean, if you download a precompiled SU2, you get only the binaries, so... users who download it precompiled should also download the source and set SU2_HOME pointing to it? Why?

I don't like the idea of defining SU2_HOME because I want the source to remain unmodified and untouched.