The problem is that these files are in git. From other hand they are modified by cmake.
So then the user is trying to update his local master to new release, he gets error
Please, commit your changes or stash them before you can merge.
error: The following untracked working tree files would be overwritten by merge:
Two solutions are possible:
1) Not to modify source tree by cmake at all and generate new files always in build directory.
2) Provide automatic check (probably in release script) to not to have these files in git.