reproduce (this is a W=1 build): git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/l1k/linux/commit/cb3e63129bf354a30602aa836e07fd2dd591b4dd git remote add l1k https://github.com/l1k/linux git fetch --no-tags l1k spdm-future git checkout cb3e63129bf354a30602aa836e07fd2dd591b4dd # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-17 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-17 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm prepare