tree: https://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode.git for-next head: cfeb007a96b15cafe1b8cc7aa8d43da77a97b7ae commit: d269543a1dcb29d198f1e8f0dd0a249a563bc2ee [1/2] unicode: implement utf8 unit tests as a KUnit test suite. config: sparc64-allmodconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout d269543a1dcb29d198f1e8f0dd0a249a563bc2ee # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc64 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 >>, old ones prefixed by <<): sparc64-linux-ld: fs/unicode/utf8-test.o: in function `kunit_test_suites_init': utf8-test.c:(.text+0x10): undefined reference to `__kunit_test_suites_init' sparc64-linux-ld: fs/unicode/utf8-test.o: in function `utf8_test_comparisons': utf8-test.c:(.text+0x48): undefined reference to `kunit_ptr_not_err_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0xd0): undefined reference to `kunit_binary_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x16c): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x220): undefined reference to `kunit_do_assertion' sparc64-linux-ld: fs/unicode/utf8-test.o: in function `utf8_test_nfdicf': utf8-test.c:(.text+0x288): undefined reference to `kunit_ptr_not_err_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x290): undefined reference to `kunit_ptr_not_err_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x2ec): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x2f8): undefined reference to `kunit_binary_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x340): undefined reference to `kunit_binary_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x3f0): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x460): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x4c8): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x51c): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x59c): undefined reference to `kunit_do_assertion' sparc64-linux-ld: fs/unicode/utf8-test.o: in function `utf8_test_nfdi': utf8-test.c:(.text+0x608): undefined reference to `kunit_ptr_not_err_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x610): undefined reference to `kunit_ptr_not_err_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x66c): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x678): undefined reference to `kunit_binary_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x6c0): undefined reference to `kunit_binary_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x774): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x7e4): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x84c): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x8a0): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0x928): undefined reference to `kunit_do_assertion' sparc64-linux-ld: fs/unicode/utf8-test.o: in function `utf8_test_supported_versions': utf8-test.c:(.text+0x998): undefined reference to `kunit_unary_assert_format' sparc64-linux-ld: utf8-test.c:(.text+0x9cc): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0xa28): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0xa80): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0xae0): undefined reference to `kunit_do_assertion' sparc64-linux-ld: utf8-test.c:(.text+0xb30): undefined reference to `kunit_do_assertion' sparc64-linux-ld: fs/unicode/utf8-test.o:utf8-test.c:(.text+0xb8c): more undefined references to `kunit_do_assertion' follow sparc64-linux-ld: fs/unicode/utf8-test.o: in function `kunit_test_suites_exit': utf8-test.c:(.exit.text+0x8): undefined reference to `__kunit_test_suites_exit' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org