How to compile and run C++0x with GCC/G++ in Eclipse CDT?

Question

I am trying to figure out how to use the upcoming C++ release 0x. It should be available in GCC 4.3+ with using the gcc std=gnu++0x option.

My simple thread program using 0x compiles in Eclipse CDT with std=gnu++0x added in Project > properties > C/C++ Build > Settings > Miscellaneous > Other flags.

#include <iostream>
#include <thread>
using namespace std;

void hello()
{
    cout << "Hello Concurrent World!" << endl;
}

int main()
{
    cout << "starting" << endl;
    thread t(hello);
    t.join();
    cout << "ending" << endl;
    return 0;
}

The program only prints "starting" and returns 0. Does anyone know why it does not run the hello function threaded?