reproduce (this is a W=1 build):
        # https://github.com/jimc/linux/commit/98f42edea39e65b171279fbce944c903cb70e597
        git remote add jimc https://github.com/jimc/linux.git
        git fetch --no-tags jimc ksyms-tune
        git checkout 98f42edea39e65b171279fbce944c903cb70e597

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=openrisc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-16.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=openrisc SHELL=/bin/bash