Xcode 4.6.3 issue

[Gianluca18092004]

Hello Everyone. Well, I'm using XCode 4.6.3 on Mountain Lion since it's the best environment for older iOS (6 and below), so I'm not using a more modern environment.
The GCC 4.2 and 4.0 compilers work fine as long as I compile under Intel, but with PPC I get the error you see on screen, regardless of the GCC I choose, the SDK I choose or the type of PPC I choose.
By the way, I'm using version 2.1 since the previous ones don't work on Xcode 4.x, and the later ones get bloated with the requirement of installers for more modern versions of Xcode.
Thanks in advance.