[Users] WARNING: "Plugin litehtml_viewer will not be built; missing libgumbo "

[Removed after GDPR request]

Hi,

I am building CM from git source and got this message:

configure: WARNING: "Plugin litehtml_viewer will not be built; missing libgumbo "

On openSUSE Leap 15.0 there is no libgumbo package.
What would be the right way to handle this?

Also is this related:

Disabled due to missing dependencies:
                    unity/messaging-menu

-- 
George