Simple C program to demonstrate OpenGL on OS X. It looks kinda like this:

.
├── Makefile          # Handles compiling the project.
├── README.md
├── bin
│   └── hello_open_gl # Compiled program, OpenGL example :)
└── source
    ├── main.c        # Core application file that draws the triangle.
    ├── xsys.c        # Wrapper methods around system calls.
    └── xsys.h

This installation guide assumes you have homebrew.

• X11
• glfw3
• glew
• OpenGL

X11 is the windowing system that used to ship with Mac OS X by default, but this is no longer the case. Simply download X11 and run the installer.

glfw3 is an open source, cross platform, library for creating and managing windows with an OpenGL context. This means that it relies heavily on the windowing system provided by X11.

$ brew tap homebrew/versions
$ brew install glfw3

Next let's install glew. This provides a small layer between our code and OpenGL.

$ brew install glew

Finally once the dependencies are installed you can run make in the root of the project folder.

$ make
$ ./bin/hello_open_gl