title: Installing LLVM libraries along with Xcode
body: <p>So I just installed Xcode on my Mac and now I would like to install LLVM as well in order to play around a bit with LLVM itself. Currently the compiler can (obviously) not find the required header files. So what is the best way to install LLVM if you already have clang, packed with Xcode, on your system?</p>
  
  <p>Thanks in advance.</p>