I don't quite get it, how can it be a C++ build system, if it only requires a C Compiler as dependency?

Or is the dependency on a C compiler in addition to the build toolchain?

In that case a dependency on a C Compiler is quite strange, why not just use bash

Hi! Build system itself only requires a C Compiler as dependency to work. So if you need a to compile a C++ project, C++ compiler is good to have.

Do you have any examples how to add external dependencies? It's a problem that almost every C/C++ project solves differently, unfortunately.

Sure! Take a look on https://github.com/Softmotions/iwnet/blob/master/Autark this project depends on iowow and fetches it from github when building.