Seems related to these errors:

1. https://bugs.orfeo-toolbox.org/view.php?id=1306
2. https://ubuntuforums.org/showthread.php?t=1703770

When OPENGL_GLU_FOUND OPENGL_GLU_FOUND and GLUT_FOUND libtiff forces HAVE_OPENGL to be true. This caused me to encounter the error: GLUT_Xmu_LIBRARY NOTFOUND

Ideally, there would be an option to turn opengl off in libtiff itself.

Following the directions in the second link, I was able to continue by installing the packages

sudo apt-get install libxmu-dev libxi-dev

but obviously forcing the user to install packages isn't an ideal fix for a superbuild, so it might be a good idea to incorporate the lines from the first lines that set an initial cache with opengl forced off, set(WITH_OPENGL "FALSE" CACHE BOOL "Initial cache" FORCE) or we can make a patch for libtiff that fixes the issue and might eventually be pushed to the parent repo.