> Arguably CMake is a build system; as a user you can build your project only by running CMake commands. If you put together a shell script that calls some oth

> Arguably CMake is a build system; as a user you can build your project only by running CMake commands. If you put together a shell script that calls some other program that runs a build, that doesn't make shell script a build system. > The fact that it will run e.g. ninja or make under-the-hood can be ignored for many use-cases. You can't, though. Some features are only available on projects generaded by cmake for specific build systems.