Hi, I am running g++-6 in UBuntu 16.04. I'm using open-source library to develop my application. In the third part library, there is only DTOR and no copy CTOR and copy assignment. So I created copy CTOR. The open source library is compiled. Now I am trying to compile my application. It gives error. g++-6 test2.cc -lfluid_msg -o test2 -g -fsanitize=address /tmp/ccEKzcOk.o: In function `fluid_msg::of10::PacketOut::PacketOut(fluid_msg::of10::PacketOut const&)': /usr/local/include/fluid/of10msg.hh:230: undefined reference to `fluid_msg::PacketOutCommon::PacketOutCommon(fluid_msg::PacketOutCommon const&)' collect2: error: ld returned 1 exit status I dont know why? When compiler creates automatically, it works. It means when I remove the copy CTOR, compilation goes well. I wish to know what is problem in linking? may be becasue of inheritance and copy CTOR.?? PacketOut is inherited from PacketOutCommon. I declare and defined copy CTOR in PacketOutCommon. For PacketOut, compiler creates itself. any help to solve the problem! Thanks
