How can I use C++14 features when building qmake projects?

Question

I\'m currently using C++11 features in my Qt applications. However, I\'d like to use some of the new C++14 features in my applications.

To enable C++11 in a Qt appli

Answer 1

For some weird reason this is what Qt does: If the compiler is gcc or mingw, CONFIG+=C++14 is transformed to a compiler flag -std=c++14 (that what you expect)

If it's another compiler (like clang), CONFIG=C++14 is stupidly transformed to -std=c++11 (sic!), so you will get errors about unsupported features, even if your clang version correctly supports C++14.

To fix it, specify the flag explicitly:

QMAKE_CXXFLAGS += -std=c++14

This way, you're sure that your compiler (g++, mingw or clang) will receive the correct flags.