Thanks to Yash Kulshrestha for these notes on getting the Lab1 (OpenGL, GLUT) 
to work on the most recent Mac OS (10.7) and Xcode (Xcode4).

Steps:

 1. From the splash screen I selected "Create a new Xcode Project"

 2. Then I selected "Cocoa Application" under Application under Mac OS X

 3. Used the 'Product Name' field to give the project a name (e.g. Test)
    and unchecked "Use Core Data" and "Include Unit Tests" options.

 4. Picked a path to save the project on the hard drive. 

 5. Deleted the files TestAppDelegate.h, TestAppDelegate.m and
    MainMenu.xib (select delete from the dialog).

 6. Expanded the Supporting Files folder and deleted Test-Prefix.pch and
    Credits.rtf (select delete from the dialog).

 7. Renamed main.m to main.cpp.

 8. Expanded the Frameworks folder and deleted Cocoa.Framework and the
    Other Frameworks folder (select Remove References Only from the
    dialog).

 9. Right clicked (control-clicked) on Frameworks and selected Add Files
    To "Test"  option from the drop-down menu.

10. Navigated to Macintosh HD/System/Library/Frameworks and selected
    GLUT.Framework and clicked Add.
 
11. Did the same for OpenGL.Framework which is also found in the same
    place as GLUT.Framework.

12. in main.cpp, 
    a) delete the line #import <CocoaCocoa.h> 
    b) add #include <GLUT/glut.h> and #include <OpenGL/openGL.h>
    c) delete the return statement in main().

Copy the source code to main.cpp and then:

1) delete the #include "stdafx.h" line 

2) change _tmain to main