GLEE 5.3.2 Adds OpenGL 3.0 Extensions Support

GLee (GL Easy Extension library) is a free cross-platform extension loading library for OpenGL. It provides seamless support for OpenGL functions up to version 3.0 and 398 extensions.

Here is a code sample:

#include <gl\GLee.h>  // (no need to link to gl.h) 
...
if (GLEE_ARB_multitexture) //is multitexture support available?
{
  glMultiTexCoord2fARB(...); //safe to use multitexture
}
else
{
   //fallback
}