I doubt the change to cmPolicies.h would do as you expect, as the logic to set a policy to a given state ( OLD,WARN,NEW ) is actually done by cmPolicies::ApplyPolicyVersion.
Now as far as how Qt5 is operating, personally I agree it would be nice that the module would provide better warnings or errors, instead they have just documented these issues on their cmake page: http://doc.qt.io/qt-5/cmake-manual.html On Tue, Jan 3, 2017 at 12:12 PM, René J.V. Bertin <rjvber...@gmail.com> wrote: > On Tuesday January 03 2017 11:41:29 Robert Maynard wrote: > >> It is the responsibility of the project to understand what components >> of CMake they require, and correctly specify a cmake_minimum required >> that satisfies all those requirements. In this case to use compile >> features you need a minimum of 3.0 which also automatically enables >> policy 25. > > I agree with you in a way, but in reality it would be up to end users and > packagers to feed back that information to an unknown number of projects and > convince them why it's necessary to comply with the request. That's just not > doable. > It would be a lot easier if the policy could be set at a central location, in > this case in the Qt module invoking the test that fails. > > > And it's CMake's responsibility to generate useful error messages, and where > possible provide a hint for the fix. > >> You can explicitly do both of those things currently see: >> https://cmake.org/cmake/help/v3.0/manual/cmake-policies.7.html > > Ah, thanks. I take it one can also change a line in cmPolicies.h: > > SELECT(POLICY, CMP0025, "Compiler id for Apple Clang is now AppleClang.", > \ > 3, 0, 0, cmPolicies::NEW) \ > > ? > > R. -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake-developers
