@Aliliche I may not be quite understanding your query, but, why are you compiling it ?

You go to the download page, pick the image for the Pi4, install it, and thats you ready to go.
Its nothing like Retropie where you can install other emus etc or compile source code on an install.

https://www.recalbox.com/download/stable/

I kryptalivian,

We have some team members realy busy in irl work for few more days /weeks ?.
So it's why you haven't any news for now. Or see any new update of the 4.1 release.
But as soon they will be available, as soon we can give you news (and some pi zero W feature to test) @Substring and @acris already on starting block for that. ;).

IRL life stay the priority (for pay the kids food). Also if we love recalbox and pi zero W ^^.