The macOS Catalina 10.15 kernel (XNU) source has been released here: source , tarball.
It has been a while since I've updated this blog, so this post will cover building XNU for all current Catalina releases 10.15 - 10.15.6. Let's start with the standard disclaimer:Building XNU requires some patience, and some open source dependencies which are not pre-installed. This post walks through all the steps necessary to build the open source version of XNU on supported Apple hardware.
