Use Modern CMake

[JonasGilg]

I think in the long term it would pay off if we replaced the current CMake of Vista with more modern CMake. I already lost a lot of time, because Vista CMake is buggy, non standard and hard to debug.

What do you think?

[Schneegans]

That's definitely a good idea, but it's really hard for me to estimate how much work this would be. I think it should be manageable for the parts of Vista which we're actively using. But all the others? How should we test them?

[JonasGilg]

There are 22 Demos we could compile for testing. But other than that it is hard. We also have internally some applications that use different parts of Vista. But I don't have an overview of how much we can cover with those either.

Maybe we can live with the fact that unused parts are possibly broken and fix them if they are needed? My current feeling is a lot of time is wasted by working with Vistas CMake and in the long run any time we invest here will be worth it.