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://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux.git/commit/?id=c6ab35c95a2ff3dbc87d08115657f9ed943bbbda git remote add andi-shyti https://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux.git git fetch --no-tags andi-shyti i2c/i2c-host-next git checkout c6ab35c95a2ff3dbc87d08115657f9ed943bbbda # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-16 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-16 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/i2c/busses/