*** not much here yet *** If you are reading this in hopes that you will find the answer to a specific question, please send the question to curt@me.umn.edu and suggest that I include the answer here. GLUT ==== Flight Gear requires GLUT version 3.7 or later (aka GameGLUT._ GLUT needs to be installed on your system before you can build Flight Gear. GLUT can be found at: http://reality.sgi.com/opengl/glut3/glut3.html GLUT (pronounced like the glut in gluttony) is the OpenGL Utility Toolkit, a window system independent toolkit for writing OpenGL programs. It implements a simple windowing application programming interface (API) for OpenGL. GLUT makes it considerably easier to learn about and explore OpenGL programming. GLUT provides a portable API so you can write a single OpenGL program that works on both Win32 PCs and X11 workstations.