Hi Matt, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on 6e7f2eacf09811d092c1b41263108ac7fe0d089d] url: https://github.com/0day-ci/linux/commits/Matt-Helsley/Enable-objtool-multiarch-build/20200512-035855 base: 6e7f2eacf09811d092c1b41263108ac7fe0d089d config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 68a9356bdea69dbcec1233f8b1fab47e72fca991) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot All errors (new ones prefixed by >>): >> ld: tools/objtool/check.o:tools/objtool/check.c:30: multiple definition of `objname'; tools/objtool/arch/missing/objtool-in.o:tools/objtool/arch/missing/check.c:9: first defined here make[4]: *** [tools/build/Makefile.build:145: tools/objtool/objtool-in.o] Error 1 make[4]: Target '__build' not remade because of errors. make[3]: *** [Makefile:61: tools/objtool/objtool-in.o] Error 2 make[3]: Target 'all' not remade because of errors. make[2]: *** [Makefile:68: objtool] Error 2 make[1]: *** [Makefile:1825: tools/objtool] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:180: sub-make] Error 2 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org