Instead, here's how to install LLVM/clang

Run the following scripts inside the directory where you want to install llvm, clang, and ninja. After running the scripts, you will have two directories -- llvm and build.

https://github.com/JDevlieghere/dotfiles/blob/master/installers/llvm.sh

https://github.com/JDevlieghere/dotfiles/blob/master/installers/ninja.sh

If you want to add a tool to clang, navigate to /llvm/tools/clang/tools/extra/ and create a folder that has the name of your tool. Copy one of the CMakeLists.txt from a different tool in the extra folder and modify it to include your <tool_name>.cpp file in your newly-created extra/<tool_name> directory.

To compile the tool, go to the /build directory and run "sudo ninja".

To run the tool, change directory into /build and run the command

bin/<tool_name> input_file.c --

Where the presence/name of the input file is dependent on your tool.