I think 'make test' is an abandoned testing option for QEMU so this report might be unimportant. Here is my results for running 'make test':
$ make test make -C tests/tcg test LINK test_path Undefined symbols for architecture x86_64: "_buffer_is_zero", referenced from: _qemu_iovec_is_zero in test_path.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make[1]: *** [test_path] Error 1 make: *** [test] Error 2