reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/l1k/linux/commit/5aeb68bd944681b53a3199b3f4cd36559371b691
        git remote add l1k https://github.com/l1k/linux
        git fetch --no-tags l1k spdm-future
        git checkout 5aeb68bd944681b53a3199b3f4cd36559371b691
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash lib/spdm/