Rectifying images by a GLSL shader - missing needed source files

PLeoncini 2022-12-14 14:28:18 UTC #1

I'm trying to compile an old yet complete example of how to Rectifying with a Shader Example, and I was searching the GLutils (.h, .c) around unsuccessfully.
Where could I found the two source code files?
BTW the link to a maybe newer Rectifying with a Shader Example doesn't work.

PLeoncini 2022-12-14 16:19:20 UTC #2

The example source code I have attempted to use seems outdated wrt. the current LeapC.h - things like LEAP_IMAGE_FRAME_REQUEST_TOKEN, LEAP_IMAGE_COMPLETE_EVENT and LeapRequestImages just to name a few are no longer there, so I'd ask to point me to a latest Rectifying with a Shader Example which actually compiles with the latest SDK.
Thanks a lot in advance,
Paolo