Merge topic 'cmake-non-writable-build-dir' 0fd64345fe Tests: Add case covering non-writable CMAKE_BINARY_DIR d91c02e40f Tests: Factor out RunCMake helper to get UNIX user id 5799d0e788 cmake: Improve error message if CMAKE_BINARY_DIR not writable Acked-by: Kitware Robot <kwrobot@kitware.com> Acked-by: buildbot <buildbot@kitware.com> Acked-by: Alex <leha-bot@yandex.ru> Merge-request: !8970