I'm at Week 4, trying to solve Problem Set 3 Breakout. Every time I compile the file 'windows.c'. I'm getting below error message

fatal error: 'spl/gwindow.h' file not found

enter image description here

I think it is trying to look for a file 'gwindow.h' in this path directory 'usr/include/spl'. I checked it and really file wasn't there. Do i have to manually download it and save it in the directory.

I'm using Appliance 19

1 Answer 1


the current version of the course (edX 2015) uses appliance 2014. see manual.cs50.net/appliance/2014/!

there is a workaround though. see https://cs50.stackexchange.com/a/9313/1161!

  • That workaround might work for pset3. But what if in future I get some other problem. I think I should update my appliance.
    – user8269
    Sep 27, 2015 at 6:28

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