How can I get imgui up and running on linux and clion

Disclaimer: I'm a jvm user, I know barely enough just to set a native program via cmake

I'd like to get the imgui glfw-opengl3 example running under Ubuntu (19.10)

In Windows is pretty easy, there is already a vs project file

But on Linux I have no idea how to continue.

Trying to use CLion, I followed this guide:

• create a compilation db

• installed the Makefile plugin

• and opened the file in CLion

now, how/what shall I do to have a (debug) configuration?