A simple tool that I've created to solve a somewhat self-inflicted problem. In some projects I want or need small differences in DLL .def exports, differences by architecture or release/debug. And I don't want to manually maintain separate files. So because there's no preprocessing support for .def files, at least not in Visual Studio, I wrote myself this simple one.

Putting it out there in case anyone else finds it useful. Find usage example in the middle of the page.