Where can I find the latest generic OpenGL headers (gl.h, glu.h, glut.h) ?
You normally download the GL headers along with the libraries for a particular platform, say win32 or Mac OS, etc.
Windows 98, NT, 2000 all ship with GL so if you’re running one of those, you should have it …
Yes, Win32 is usually shipped with OpenGL, but not with either libraries nor headers. Only the precompiled version.
Headers can be found at www.mesa3d.org