I've got it running on OS X with some modifications:

- In the Makefile, use

  LIBS = -lglfw3 -framework OpenGL -lm -lGLEW

- In the main.c file of the project, change headers to use <OpenGL/gl.h> and <OpenGL/glu.h>

- In the shader code, change "#version 300 es" to "#version 400" for both the vertex and fragment shader.

I'll try to make a PR with conditionals if I can find the time today.

As far as I know glfw, sdl and allegro work for OSX as well. But if that is not the case I still have demo code for Mac, iOS and tvOS. The problem is I don't have any of these platforms and the demos are from an old version. So if somebody is found to take over the porting I can release it again.

I forked the repo and created an Xcode project to play around with the GLFW demo: https://github.com/starbugs/nuklear

You need to install glfw3 and glew via brew:

$ brew install glew

$ brew tap homebrew/versions

$ brew install --build-bottle --static glfw3

  $ brew install homebrew/versions/glfw3
  $ cd examples; make all

Should do the trick.