We can leave this in, since it works, but we can also fix this in the patch file, by removing the hardcoding of `gcc` in the link step.
This is just a note, I'm OK with leaving this in as is, up to you. 

A small advantage of having this in the patch file together with the other hardcoding fixes, is that you wouldn't forget this fix if you would rewrite an easyconfig file (.eb) for Ferret for a new version (you're going to need the patch anyway, you won't forget that).
It might be a time-saver to have it in the patch directly, so you won't be figuring out the problem again that is causing us to specify `makeopts` here.