@mikemcquaid I suppose you have Clang 3.3 installed (from Xcode 5.0).

However, with Clang 3.4, unrecognized option `-mno-dynamic-no-pic` will cause a fatal error (was just a warning in 3.3).

Clang 3.4 (a.k.a LLVM 3.4) has already been released, and even Xcode 5.1 Developer Preview comes with Clang 3.4.