I have a "series" of articles from a few years ago covering FreeBSD, LLVM, and GNU Make (https://lowlevelbits.org/categories/system-under-test/ https://lowlevel

I have a "series" of articles from a few years ago covering FreeBSD, LLVM, and GNU Make (https://lowlevelbits.org/categories/system-under-test/ https://lowlevelbits.org/categories/system-under-test/) and even created a separate website with a few more articles https://systemundertest.org https://systemundertest.org, but stopped later.