I had it mounted to the Mopar crossbars on my JL. This is the best pic I have. There is an L bracket that mounts to the awning and it slides into a slot in the crossbar. I couldn't find the brackets. If you are intrested in those, I'll look for them again or order some.
I installed the roof rack acouple weeks ago. Finally had some good weather to get the awning mounted and take some pictures.
I had a JL Sport which I traded for the Gladiator. I had an an awning mounted to Mopar crossbars clamped to the gutters on the JL hardtop. That wouldn't really work...