FeatureSummary: RUNTIME_REQUIRED
It'd be grand if we had a way to make RUNTIME package required rather than optional. A RUNTIME_REQUIRED type would do the trick for example.
In KDE software we are starting to use RUNTIME more and more but both users building from source, and distributions have trouble noticing missing runtime dependencies in the mountain of other cmake packages our software tends to use. To improve the build behavior it'd be good if we could have the RUNTIME packages be required by default and explicitly require opting out of the requiredness via CMAKE_DISABLE_FIND_PACKAGE_foo or some other variable - this way we can be certain that new runtime deps aren't being missed while still enabling distributions to build without actually having the runtime deps installed.