libGLU.so.1: Cannot Open Shared Object File

The error message

ImportError: libGLU.so.1: cannot open shared object file: No such file or directory

may appear on Linux systems when you try to launch VNL for the first time. To solve it, install the related OpenGL utility library:

  • on Ubuntu: apt-get install libglu1-mesa
  • on openSuSe: install libGLU1
  • on Fedora: install mesa-libGLU