How to download and setup circl
Open terminal and run command
git clone https://github.com/cloudflare/circl.git
git clone is used to create a copy or clone of circl repositories.
You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with circl https://github.com/cloudflare/circl/archive/master.zip
Or simply clone circl with SSH
[email protected]:cloudflare/circl.git