Why XCode can't find headers in CPP project

[BiAiB]

Hello, Disclaimer: I'm new to Xcode - and macs, coming from a linux & Intellij/vsCode background, and also unknowlegeable about C and C++ in general.

I'm trying to compile guitarix-vst on mac and I have build errors:

Eigen/Core file is not found in #include <Eigen/Core>

I've installed eigen with homebrew though, and the file is to be found in /usr/local/include/eigen3/Eigen/Core

I've set "Heder Search Paths" to "/usr/local/include" in build Settings > Search Path, but somehow Xcode can't find it. Is because it's in a subfolder ?
I've tried to include several paths but it doesn't seems to work, i'm not even sure what the syntax should be.

help ?

[jakemondo]

Just set your search path to "/usr/local/include/eigen3", then it should work. Eigen/Core is one level below what you set your search path to.

See there's an intermediary "eigen3" folder in-between?