Is it possible to search for headers recursively in a specific directory?

[mnoureldin]

Well I got it working using quotation marks in the build flag.

How to use relative paths in build flags?

Well, I found out how to get it working, for me I needed quotation marks to get it working. So just like this: build_flags = ; -I "${platformio.workspace_dir}/../" ; This accesses the current project directory -I "${platformio.lib_dir}/arduino_fakes/src/core" Without these quotations it did not work.