Assuming that the llvm source is in /local/workspace/llvm, our build
directory is /local/llvm_cmake and the install directory (if we want to install) is
1. Create the build directory and install directory(if needed).
2. Run Cmake
cmake -G "Eclipse CDT4 - Unix Makefiles" -DCMAKE_INSTALL_PREFIX:STRING="/local/llvm_install" /local/workspace/llvm
3. If you do a make, then even all the .inc files and such will have their entities accessible.