I'm running OS X Mavericks and installed MacRuby last week in order to make a simple app in it. Anything I try to run in Xcode (even Hello World app or a downloaded example), I always get "Build Failed" and really similar errors to this:
I found in some forums that th Garbage Collection is really deprecated etc. but I could't find any solution. Therefore I would be very glad if someone has a solution for this.
And no, I can't just work in Objective-C since it's far too complicated for me and apps I'd make :)
Thank you!
MacRuby isn't currently compatible with 10.9, not just because of the garbage collector, but due to changes in the Objective-C runtime, LLVM, and Xcode. There is a thread (titled "Mavericks and Macruby") going on right now on the macruby-devel mailing list about these issues. Joshua Ballanco's message especially sheds a lot of light on what it would take to keep MacRuby going.
You can still use the garbage collector by setting GCC_ENABLE_OBJC_GC = supported
in Xcode; but as I said, it won't make MacRuby actually usable (yet).