xcode - How to update LLVM & Clang on Mac OSX?

Question

On my version of Mac OSX (Lion 10.7.1, XCode 4.1), there is LLVM 3.0svn and Clang 2.1. The current versions are LLVM 3.0 and Clang 3.0.

From the XCode web site, it seems that the latest version (4.2.1) still uses LLVM 2.0, and this seems to be a mistake.

Do you know if installing the latest XCode I will get a more recent version of LLVM/Clang?

Do you know of any possible issues installing Clang manually?

Once installed, will the new Clang be used automatically by all the IDEs I have (e.g. NetBeans)?

Answer 1

The web site is incorrect. Xcode 4.2.1 and 4.2 include LLVM 3.0 and clang 3.0:

clang --version
Apple clang version 3.0 (tags/Apple/clang-211.12) (based on LLVM 3.0svn)

clang++ --version
Apple clang version 3.0 (tags/Apple/clang-211.12) (based on LLVM 3.0svn)

llvm-g++ --version
i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)

llvm-gcc --version
i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)