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The following combination breaks my build on MacOS:

• setting the CoMISo project root dir as include dir: https://graphics.rwth-aachen.de:9000/CoMISo/CoMISo/-/blob/68e7fb6eb836d1af0211341d32cf965e2b4ec5de/CMakeLists.txt#L73
• the "VERSION" file in the project root
• <version> being a standard library header in C++20, which is included transitively in LLVM's libc++
• MacOS with (default) case-insensitive file system

This leads to VERSION being #include'd, which clearly won't work.

VERSION is used by vci_get_version() in cmake-library/VCI/VCICommon.cmake

I have multiple suggestions on how to fix this:

• Avoiding use of vci_get_version in CMake in favor of just setting the version in the project() call, then deleting VERSION. If you would merge this change, I'd be up for implementing it.
• Reorganizing the source so that we don't have to add the CoMISo root (or worse, its parent directory!) as include dir. For example moving everything to a src dir, or even splitting into src and include/CoMISo (for public headers). Not sure how to handle Base/, this is maybe a task someone with insight into how CoMISo is used at Autodesk could perform better