Install libopentk-cil-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libopentk-cil-dev
Open Toolkit wrapper for OpenGL, OpenAL and OpenCL - Dev files
The Open Toolkit is an advanced, low-level C# library that wraps OpenGL, OpenCL and OpenAL. It is suitable for games, scientific applications and any other project that requires 3d graphics, audio or compute functionality. . This package contains the development files for OpenTK, and should be used for compilation.