What if you can't compile C++20?

[ghost]

By default, the Makefile that comes with the project will require a modern compiler with C++20 support (Clang, GCC).

However - the library itself will only require C++17, not C++20. It is only the examples that require C++20. You can always rewrite the examples into C++17 by removing C++20 features such as designated initializers.

None of the above should be a problem if you are running an up to date Ubuntu or macOS machine, either way.