Re: LVGL moving to Kconfig, how we could integrated better with them

[Gregory Nutt]

Of course it would be cool if you could simply do "make menuconfig" on NuttX 
and have LVGL options appear there, but I believe that would couple LVGL and NuttX build 
systems which may not be the best idea. I'm not sure if that can be done cleanly (it 
would always produce one .config and config.h which both would have to read).
If there were a Kconfig in the top-level LVGL directory, then the 
apps/lvgl/Kconfig could simply "source lvgl/Kconfig".  I don't believe 
that introduces any new, serious coupling between apps and LVGL.  There 
are already expectations of what will be available in LVGL source 
trees.  Adding the expectation of a Kconfig file would be the only addition.