OpenMP omp_get_num_procs

Hi there,

I have a strange problem. I'm getting on with OpenMP, however I get error messages when I am trying to use omp functions:


#include <iostream>
#include <omp.h>

using namespace std;

int main()
{
std::cout<<omp_get_num_procs()<<std::endl;

std::cout << "Finished" <<std::endl;
return 0;
}



So the code isn't especially complicated but I get an error:

undefined reference to `omp_get_num_procs

I have read OpenMP manual and there's not mentioned that omp requires any additional libs or dlls.
So what is wrong?

I am using GCC here.

Regards,
Misery