makefile - Not found for architecture x86_64? -

i adding test suite doubly linked list, when add test suite, compiler error:

undefined symbols architecture x86_64: "test::runtests()", referenced from: doublelinkedlist::tester() in main.o "test::test(std::__1::basic_ostream >&)", referenced from: doublelinkedlist::tester() in main.o ld: symbol(s) not found architecture x86_64 clang: error: linker command

i think has makefile unsure.

here makefile

dll: main.o      g++ -g -std=c++0x  main.o -o dll main.o: main.cpp doublelinkedlist.h doublelinkedlist.hpp node.h node.hpp     g++ -g -std=c++0x -c main.cpp test.o: doublelinkedlist.h test.cpp     g++ -g -std=c++0x -c test.cpp  clean:  rm *.o lab03 echo clean done 

here method definition , call doublelinkedlist.hpp.

 template<typename t>  void doublelinkedlist<t>::tester()  {   test mytester(std::cout);   mytester.runtests();  }