Hi there forum, I picked up an old Opensource project from github which is a driver for the Xbox 360 controller. I was going through and hoping to update the repo/build for Apple Silicon and learn some macOS Kernel driver dev along the way. I have been scouring the Apple IOKit documentation archive making my 1/4 through the IOKit doc archive, but, currently, I have an issue with the header search paths. I need to import IOKit/usb/IOUSBLib.h as it contains the symbols utilised by the driver, and it appears that by default Xcode does not use the IOKit Frameworkheaders, but Kernel.framework headers (if I search for definition of symbols that can be found, Xcode opens the Kernel.Framework IOKit path.). Any idea how I can add the user-space IOKit to my driver? I saw that there's the kernel/kernlib, kernel/IOKit, and just IOKit. But a bit lost why this header file is not in the search path. Thanks in advance, If you're curious the code is here: https://github.com/VariableDeclared/360Controller/tree/pj/update-source-for-macos-12.0 Peter