macOS OpenGL hello world using GLFW

cyan window

What a beautiful cyan! I made this window on macOS using C, OpenGL and GLFW. Here’s the C:

// main.c
#include <GLFW/glfw3.h>
int main(void) {
  if (!glfwInit()) return -1;
  GLFWwindow* window = glfwCreateWindow(320, 240, "Hello World", NULL, NULL);
  if (!window) {
    return -1;
  glClearColor(0.0f, 1.0f, 1.0f, 1.0f);
  while (!glfwWindowShouldClose(window)) {
  return 0;

To compile it:

$ brew install glfw3
$ clang -lglfw -framework OpenGL main.c
$ ./a.out

GLFW is an abstraction over the different window systems of MacOS, Linux, Windows, etc. This C should also work on Windows or Linux, though the compilation steps may look different.

Tagged .

Similar posts

More by Jim

Want to build a fantastic product using LLMs? I work at Granola where we're building the future IDE for knowledge work. Come and work with us! Read more or get in touch!

This page copyright James Fisher 2017. Content is not associated with my employer. Found an error? Edit this page.