I’m using a library (lwip) which includes a file (lwipopts.h) that is not part of that library. This is intentional, as this is where you set configuration options.
I’m placing the library in its own folder (lib/lwip/) and add a
library.json file to make it play nice in the PIO context.
Where do I place my include file? Whatever I try, the file is not found.
(I don’t want to place it inside the library, because it’s app-specific)