tree: git://git.monstr.eu/linux-2.6-microblaze for-test head: 21f70b89dfef52f69ce1413868950cf5baf3868d commit: 79911b8f4de117478c53deda417ccddc3ea4ef59 [396/1134] v4l: xilinx: scd: Add v4l2 custom events config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project d5143e3f102a91599682fc630205e5c6fec58c76) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 79911b8f4de117478c53deda417ccddc3ea4ef59 # save the attached .config to linux build tree COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): awk: ../arch/x86/tools/gen-insn-attr-x86.awk:260: warning: regexp escape sequence `\:' is not a known regexp operator awk: ../arch/x86/tools/gen-insn-attr-x86.awk:350: (FILENAME=../arch/x86/lib/x86-opcode-map.txt FNR=41) warning: regexp escape sequence `\&' is not a known regexp operator /usr/bin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x10): multiple definition of `yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x58): first defined here clang-11: error: linker command failed with exit code 1 (use -v to see invocation) make[2]: *** [scripts/Makefile.host:116: scripts/dtc/dtc] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1263: scripts_dtc] Error 2 make[2]: *** [scripts/Makefile.headersinst:66: usr/include/linux/xilinx-v4l2-events.h] Error 1 make[2]: Target '__headers' not remade because of errors. make[1]: *** [Makefile:1195: headers] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:179: sub-make] Error 2 12 real 21 user 16 sys 312.80% cpu make prepare --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org