How to compile and install LLVM 13 from source on windows 10?

I want to install LLVM 13.0.1 in my local windows (64 bit) system to use it for creating a working enviorment for open source project. I downloaded and install from here but I found it is not complete It is missing many library files and cmake files that are required and getting errors while building. so I want now to install LLVM 13.0.1 from source. I am very early in learning LLVM , Clang so don't have any idea of doing so. Can anyone give me the entire step / commands to do so.