tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 815f0ddb346c196018d4d8f8f55c12b83da1de3f commit: faa16bc404d72a5afb857c924c83a5f691f83386 lib: Use existing define with polynomial date: 4 weeks ago config: powerpc-skiroot_defconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout faa16bc404d72a5afb857c924c83a5f691f83386 # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=powerpc All errors (new ones prefixed by >>): In file included from arch/powerpc/boot/../../../lib/decompress_unxz.c:233:0, from arch/powerpc/boot/decompress.c:42: >> arch/powerpc/boot/../../../lib/xz/xz_crc32.c:18:10: fatal error: linux/crc32poly.h: No such file or directory #include ^~~~~~~~~~~~~~~~~~~ compilation terminated. vim +18 arch/powerpc/boot/../../../lib/xz/xz_crc32.c > 18 #include 19 #include "xz_private.h" 20 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation