CMake Warning \(dev\) in CMakeLists\.txt:
  Policy CMP0128 is not set: Selection of language standard and extension
  flags improved\.  Run "cmake --help-policy CMP0128" for policy details\.  Use
  the cmake_policy command to set the policy and suppress this warning\.

  For compatibility with older versions of CMake, unnecessary flags for
  language standard or compiler extensions may be added.
This warning is for project developers\.  Use -Wno-dev to suppress it\.