Merge topic 'CMP0126-WARNING' 616972197a Merge branch 'backport-3.21-CMP0126-WARNING' into CMP0126-WARNING 16208ac113 CMP0126: Add control for warnings Acked-by: Kitware Robot <kwrobot@kitware.com> Acked-by: Ben Boeckel <ben.boeckel@kitware.com> Merge-request: !6282