[cmake-developers] Wrong cxx-extension flags

[Brad King]

On 07/14/2016 03:59 PM, Kornel Benko wrote:
>> What you can do is not add your own flag and instead do
>>
>>  set(CMAKE_CXX_STANDARD 14)
>>  set(CMAKE_CXX_EXTENSIONS OFF)
> 
> I did this, as it seemed least invasive.
> But now, instead of '-std=gnu++1' I got '-std=c++11' which is not better.
> Of course, since QT5.7 explicitly requires   C++11 features, we don't need C++14.

I don't quite follow here.  What flag to you want to get?
Don't add your own flag explicitly.  Some combination of
the above settings can get the flag you need.

-Brad