can't complie using gcc with -fopenmp in OS X

Question

I just started learning OpenMP. I tried to compile a simple Hello World C code using gcc.

Here's is my command line .

gcc -fopenmp HelloWorld.c

and this is my simple HelloWorld code .

#include<omp.h>
int main()
{
 #pragma omp parallel
 {
 int ID = 0;
 Printf(“hello(%d)”,ID);
 printf(“world(%d)”,ID);
 }
}

and when i try to compile in OS X. It showed the following error .

clang: error: unsupported option '-fopenmp'

Answer 1

It worked after installing gcc through Homebrew

Install Homebrew

ruby -e "$(curl -fsSL 
https://raw.githubusercontent.com/Homebrew/install/master/install)"

Install gcc

brew install gcc

and code compiled after using this command line.

gcc-7 -fopenmp HelloWorld.c