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/iwlwifi/iwlwifi-next.git/commit/?id=621b2b3ac2d03a0e4bb598d0d2af5f11126d309c
        git remote add iwlwifi-next https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next.git
        git fetch --no-tags iwlwifi-next next
        git checkout 621b2b3ac2d03a0e4bb598d0d2af5f11126d309c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sparc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/net/wireless/intel/iwlwifi/mvm/tests/