Error when trying to install OpenMP on Mac OS

I try to run this command: g++ -o lab0 lab0.cpp -lm -fopenmp

However, it returns: clang: error: unsupported option '-fopenmp'

I have already installed gcc, llvm, libomp. I'm not sure what to do anymore. This is all my code has:

#include <iostream>  using namespace std;./    int main()  {      cout << "Hello World" << endl;        return 0;  }  

https://stackoverflow.com/questions/66913629/error-when-trying-to-install-openmp-on-mac-os April 02, 2021 at 10:05AM