I'm trying to setup xcode project too. Already spent 2 days but no luck yet. Xcode 5.1.1, mac os 10.9.4.
Tried all possible approaches:
OS X Deployment Target 10.8
Other linkers flag -stdlib=libstdc++ and -lstdc++ if different combinations
Other C and C++ Flags both contain -mmacosx-version-min=10.8
C++ Language Dialect and C++ Standard Library in all combinations
I can't even imagine what I missed.