reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k.git/commit/?id=c9e868e85b8e39710359f076a7c22c0659838e51
        git remote add geert-m68k https://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k.git
        git fetch --no-tags geert-m68k atari-drm-wip-rebasing
        git checkout c9e868e85b8e39710359f076a7c22c0659838e51
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/gpu/drm/atari/