Error: Unable to open port: can't set "compiler.blacklist": couldn't determine build number of compiler "gcc-4.2"

[Ryan Schmidt]

On Nov 3, 2013, at 19:27, Brickle Macho wrote:

> Trying to install gimp on Mavericks, getting the following error:
> 
> Error: Unable to open port: can't set "compiler.blacklist": couldn't determine build number of compiler "gcc-4.2"

On Mavericks (or indeed on Snow Leopard, Lion or Mountain Lion, using Xcode 4.2 or greater) there shouldn’t be any “gcc-4.2”. Where is it and how did it get there? What happens if you run

gcc-4.2 -v