title: GLUI problem when using cocos2d OpenGL
body: <p>Has anyone come across this problem when building with cocos2d (OpenGL library for iPhone 2D games)?  </p>
  
  <pre><code>"glui/GL/glui.h" file is not found
  gluOrtho2D was not declared
  GL_COLOR_BUFFER_BIT was not declared.
  </code></pre>
  
  <p>There seems to be very little info on GLUI for iPhone on the web.  I am new to OpenGL, so appreciate the help!  I have included OpenGLES CoreGraphics libraries, even tried adding linker flag "-framework GLUI" but to no avail.</p>
  
  <p>Thanks!</p>