> But even if not, CMake stuff as a rule is not even portable between different flavors of Unix,

Not sure what your experience has been but I've had zero problems with cmake portability on nixes.

Raw makefiles are so much worse from a maintainability point of view.

I find it kinda fascinating to be honest. Two devs come to totally opposite conclusions.

Also to get more logging try this: https://stackoverflow.com/a/22803821/3988037