glsdk itself is available here - https://sourceforge.net/projects/glsdk/files/ - but I wasn't able to compile any version of it on my Ubuntu. Moreover, I am not sure that it will work anyway, because from what I get the tutorial was distributed with a modified version of glsdk.
glsdk itself is available here - https://sourceforge.net/projects/glsdk/files/ - but I wasn't able to compile any version of it on my Ubuntu. Moreover, I am not sure that it will work anyway, because from what I get the tutorial was distributed with a modified version of glsdk.
The only place where I've found the original tutorial is the original repo via Wayback Machine: http://web.archive.org/web/20160406200137/https://bitbucket.org/alfonse/gltut/downloads
It has glsdk in it, which does compile. But unfortunately, the first tutorial itself does not, at least on my system.
Hope it helps someone.