make_unique<>() not found

skylendar

Hi there, I suppose this topic is not new, but in my case it is quit embarrassing.

In a basic cpp test program compiled with gcc 7.3 x86_64 -std=gnu++17, I declare:

auto p = make_unique<mytype>();
cout << __cplusplus << endl;

so far, so good. the prog compiles, runs and returns '201402' which is correct.
However, when I try to compile a prog linked with Qt5.11 libraries, I got:

error : use of undeclared identifier 'make_unique', and __cplusplus is set to '201103'.

What's wrong ?

aha_1980

hi @skylendar,

I think you have to add CONFIG+=C++1z to your project .pro file.

regards

Edit: better look here: https://stackoverflow.com/questions/46610996/cant-use-c17-features-using-g-7-2-in-qtcreator

skylendar

@aha_1980

Thx for the answer, but I use CMake. So...

aha_1980

@skylendar

... https://stackoverflow.com/questions/48501290/qtcreator-cmake-c17-features?r ?

skylendar

@skylendar

Ah, I found finally:

target_compile_features(myapp PUBLIC cxx_std_17)

aha_1980

@skylendar

then please mark this topic as SOLVED. thanks

Solved make_unique<>() not found