Define a pre-build command without creating a new target

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@Artemis

It implements the same concept, but he runs it at configure time, with execute_process() , so he doesn’t really have to handle dependencies.

nope, it runs at build time. Try it!

personally I wouldn’t use configure_file twice, that’s very confusing. Try it in one go. You don’t need ConfigureDate.cmake.in. You can set time and paths directly without the need of execute_process or custom_command.