CC: kbuild-all(a)lists.01.org CC: linux-kernel(a)vger.kernel.org TO: Madhavan Srinivasan CC: Michael Ellerman Hi Madhavan, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7fe10096c1508c7f033d34d0741809f8eecc1ed4 commit: 3c9450c053f88e525b2db1e6990cdf34d14e7696 powerpc/perf: Fix missing is_sier_aviable() during build date: 7 weeks ago :::::: branch date: 19 hours ago :::::: commit date: 7 weeks ago config: powerpc64-randconfig-p001-20200909 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 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 git checkout 3c9450c053f88e525b2db1e6990cdf34d14e7696 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> make[2]: *** [arch/powerpc/Makefile.postlink:31: vmlinux] Error 1 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org