Question

I’m trying to build a C++ app on Windows using Qt.

My setup is:

1. Installed Vs2008,2010,2012
2. Installed Qt 5 RC1

Now when I #include and try to use std::unique_ptr it tells me that its not defined, so I looked in VS2010 headers and saw that _HAS_CPP0X needs to be defined, so I added it to the .pro as DEFINES += _HAS_CPP0X

This still had no effect, so I ctrl+clicked the #include memory only to find its using the memory header from:

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include

Which really doesn’t have any std::unique_ptr in there!

Surely it should be looking at:

C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include ?

I figured I’d include memory via the full path but this still fails with errors in the included memory header itself relating to C++11 things such as move and rvalue references.

So what I’d like to know is:

1. Can Qt on Windows use C++11 features supported by Vs2010?
2. If yes then how?
3. If no then I’m very disappointed as developing a cross platform Qt 5 app on Linux means its not cross platform since its impossible to build it for any other platforms!

Edit:

Just so the solution to this is clear: Download the source of Qt5 and build it with MinGW and you’ll be all set (inc the C++11 pro option in the accepted answer).

Answer 1

You can simply put:

CONFIG += c++11

in your .pro file. But upgrading your compiler to a recent g++ or clang is highly recommended.