missing gll.h and gll.hpp

I found this thread which was closed : https://www.opengl.org/discussion_boards/showthread.php/181882-Glsdk-missing-include-files-after-Premake-build
I’m having a similar problem; gll.h and gll.hpp doesn’t exist in the glsdk and so I can’t build my projects following the arcsynthetis tutorial.
Am I doing anything wrong, or that tutorial just getting old?

So I downloaded GLSDK 4 instead and it worked, perhaps author of tutorial want to add that.