message: build system: prevent warning with ninja
diff: @@ -16,6 +16,7 @@ include(cmake/tinyxml2.cmake)
  include(cmake/zlib.cmake)
  if(NOT MSVC)
  + cmake_policy(SET CMP0058 NEW)
  include(third_party/cpp_rsc/cmake/modules/cpp_resource.cmake)
  if(NOT ANDROID AND NOT IOS)
  # If not cross-compiling, we can build cpp_rsc.
  