tutorials fail when NekMesh is not build
CMake Error at docs/tutorial/CMakeLists.txt:149 (ADD_TEST):
Error evaluating generator expression:
$<TARGET_FILE:NekMesh>
No target "NekMesh"
Call Stack (most recent call first):
docs/tutorial/basics/advection-diffusion/CMakeLists.txt:9 (ADD_NEKTAR_TUTORIAL_TEST)