I would highly recommend removing all of the information about how to setup a compiler to compile ArduPilot from the Wiki:
dev.ardupilot.com/wiki/building- … ual-micro/
Leaving this up there when it is entirely nonfunctional causes people to waste countless hours trying to get it to work when it is impossible to do so.
For a Wiki, having no information is better than having bad information and absolutely no one willing to help people that are stuck trying to use it.