Hi Nick, Thank you for the patch! Yet something to improve: [auto build test ERROR on kbuild/for-next] [also build test ERROR on jeyu/modules-next linus/master v5.14-rc4] [cannot apply to kbuild/kconfig next-20210803] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Nick-Alcock/kbuild-bring-back-tristate-conf/20210804-021625 base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next config: powerpc-buildonly-randconfig-r001-20210803 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 4f71f59bf3d9914188a11d0c41bedbb339d36ff5) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/b7ff6d09b759105b74be9c0fb8864bb05ca13ce0 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Nick-Alcock/kbuild-bring-back-tristate-conf/20210804-021625 git checkout b7ff6d09b759105b74be9c0fb8864bb05ca13ce0 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): make[1]: *** [Makefile:736: include/config/auto.conf.cmd] Error 2 make[1]: Failed to remake makefile 'include/config/auto.conf.cmd'. make[1]: Failed to remake makefile 'include/config/auto.conf'. >> make[1]: *** No rule to make target 'include/config/tristate.conf', needed by 'init/modules_thick.builtin'. make[1]: Target '__all' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org