Xcode 3.2.1 GCC CLANG and LLVM demystification
The readme included with the new Xcode 3.2.1 this week says the following: Static code analysis is fully integrated within the Xcode IDE via the Build and Analyze option under the Build menu or via custom build settings GCC 4.2 is the default system compiler for the 10.6 SDK The optional LLVM compiler is included using two different front ends - the Clang compiler is a leading-edge parser that offers dramatically improved compile times. For maximum compatibility, the GCC LLVM compiler utilizes the LLVM back-end with the GCC 4.2 parser. New optional Clang-LLVM 1.0 compiler uses the much faster