Hi Masahiro, I love your patch! Perhaps something to improve: [auto build test WARNING on masahiroy-kbuild/for-next] [also build test WARNING on linus/master v6.0-rc5] [cannot apply to next-20220909] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Masahiro-Yamada/kbuild-move-Werror-from-KBUILD_CFLAGS-to-KBUILD_CPPFLAGS/20220905-164209 base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next config: s390-randconfig-s052-20220911 (https://download.01.org/0day-ci/archive/20220912/202209121730.ipnGRE83-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/2f8ee1865d7d00ad27460d94056c7752cad8481f git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Masahiro-Yamada/kbuild-move-Werror-from-KBUILD_CFLAGS-to-KBUILD_CPPFLAGS/20220905-164209 git checkout 2f8ee1865d7d00ad27460d94056c7752cad8481f # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> arch/s390/boot/decompressor.c:28:7: sparse: sparse: undefined preprocessor identifier 'CONFIG_KERNEL_ZSTD' vim +/CONFIG_KERNEL_ZSTD +28 arch/s390/boot/decompressor.c 1844c9bc0b2fed arch/s390/boot/compressed/misc.c Martin Schwidefsky 2010-02-26 25 54f45214522ae7 arch/s390/boot/compressed/decompressor.c Vasily Gorbik 2021-06-16 26 #ifdef CONFIG_KERNEL_BZIP2 1b3e3faf29d3ac arch/s390/boot/compressed/decompressor.c Mikhail Zaslonko 2020-01-30 27 #define BOOT_HEAP_SIZE 0x400000 7b034d9c1b08b3 arch/s390/boot/compressed/decompressor.c Dimitri John Ledkov 2021-06-15 @28 #elif CONFIG_KERNEL_ZSTD 7b034d9c1b08b3 arch/s390/boot/compressed/decompressor.c Dimitri John Ledkov 2021-06-15 29 #define BOOT_HEAP_SIZE 0x30000 1844c9bc0b2fed arch/s390/boot/compressed/misc.c Martin Schwidefsky 2010-02-26 30 #else 1b3e3faf29d3ac arch/s390/boot/compressed/decompressor.c Mikhail Zaslonko 2020-01-30 31 #define BOOT_HEAP_SIZE 0x10000 1844c9bc0b2fed arch/s390/boot/compressed/misc.c Martin Schwidefsky 2010-02-26 32 #endif 1844c9bc0b2fed arch/s390/boot/compressed/misc.c Martin Schwidefsky 2010-02-26 33 -- 0-DAY CI Kernel Test Service https://01.org/lkp
