Install the latest stable version from homebrew (macOS only)

Installation

1. Get homebrew package manager from https://brew.sh
2. Run brew install llvm , you should get the information like:

Congrats! The LLVM has been installed successfully.

Environment variables setup

• Add the following lines to your environment variables in bash profiles (e.g., .bashrc or .zshrc).

export PATH="$PATH:/usr/local/opt/llvm/bin"

This will help cmake find llvm-config package directly, which will automatically help you configure the LLVM_HOME variable and the paths to LLVM headers and libraries.

Get the pre-built LLVM binaries and libraries (Linux and other platforms)

Download and extract LLVM binaries

• Go to LLVM Release Download Page, download the latest prebuilt binaries.

  

  wget [https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.0/clang+llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz](https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.0/clang+llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz) (v10.0.0, the latest version)

• Extract the archive.

  tar xvf[clang+llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz](https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.0/clang+llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz)

Environment variables setup

• Add the following lines to your environment variables in bash profiles (e.g., .bashrc or .zshrc). Change PATH_TO_PREBUILT to directories you extract the prebuilt from last step.

export PATH="$PATH:PATH_TO_PREBUILT"

This will help cmake find llvm-config package directly, which will automatically help you configure the LLVM_HOME variable and the paths to LLVM headers and libraries.