Arduino on Xcode Project — Official Thread

Dear avenue33 (or anybody else who may help),

I have installed embedXcode but get stuck since a couple of days when trying to execute the build target.
I get errors that suggest that the compiler would not accept overloading functions. (screenshot attached)
Also, the UDPbytewise library seems to request a "Types.h" include that cannot be found.
What kind of confuses me is also that those are "Shell Script Invocation Errors".
Any idea if this is a compiler flag not set or something of that sort? I really would like this to work, as I have a project that I need to separate into different libraries and classes to be maintainable, and the Arduino IDE is just not made for that.

Any help would be greatly appreciated.