std random functions not working - Qt MinGw

Question

I am using QtCreator 2.4.1, with QtSdk 4.8.1 and MinGw 4.7.2

I am trying to use the (c++11) random library, but so far I have been unsuccesful. Take the following sample code:

#include <random>
...
std::default_random_engine generator;
std::uniform_int_distribution<int> distribution(1,6);
int dice_roll = distribution(generator);  // generates number in the range 1..6

The compiler complains:

error: 'default_random_engine' is not a member of 'std'

error: 'uniform_int_distribution' is not a member of 'std'

I've got the -std=c++0x flag in my .pro file. All other STL functionality seems to work properly, so I'm puzzled! I'd be grateful if someone could give me a hand with this.

Answer 1

I ran into the same problem, and was unable to change the compiler.

I replaced std::rand() with qrand()

http://qt-project.org/doc/qt-4.8/qtglobal.html#qrand

Answer 2

Well, silly problem, but might happen to others, so here we go:

For some reason my code was being compiled with MinGW 4.4, the version that shipped by default with my Qt Creator. To bring it back to MinGw 4.7.2, which I already had installed in my computer, I clicked on the 'Projects' tab on the left of the QCreator screen, then selected the correct tool chain.

Thanks loads to Joachim Pileborg for pointing me in the right direction.