reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/liam/linux.git/commit/?id=59685a5ddca1208bbdcbb990f5cacabb224b369f
        git remote add liam https://git.kernel.org/pub/scm/linux/kernel/git/liam/linux.git
        git fetch --no-tags liam maple_marks_v4
        git checkout 59685a5ddca1208bbdcbb990f5cacabb224b369f

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash lib/