Compile with optimization

[pinkenburg]

I finally tracked down the reason for the unresolved symbol which has been bugging me for a year. Whenever compiling with -O2 it showed up:
root.exe: symbol lookup error: /direct/phenix+u/pinkenbu/workarea/sPHENIX/gitrepov5/install/lib/libsphenixnpc.so.0.0.0: undefined symbol: ZN15nopayloadclient15NoPayloadClient8makeRespIN8nlohmann10basic_jsonISt3mapSt6vectorNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEblmdSaNS2_14adl_serializerES5_IhSaIhEEEEEESF_T
[pinkenbu@sphnxdev01 CDBTest]$ c++filt ZN15nopayloadclient15NoPayloadClient8makeRespIN8nlohmann10basic_jsonISt3mapSt6vectorNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEblmdSaNS2_14adl_serializerES5_IhSaIhEEEEEESF_T
nlohmann::basic_json<std::map, std::vector, std::__cxx11::basic_string<char, std::char_traits, std::allocator >, bool, long, unsigned long, double, std::allocator, nlohmann::adl_serializer, std::vector<unsigned char, std::allocator > > nopayloadclient::NoPayloadClient::makeResp<nlohmann::basic_json<std::map, std::vector, std::__cxx11::basic_string<char, std::char_traits, std::allocator >, bool, long, unsigned long, double, std::allocator, nlohmann::adl_serializer, std::vector<unsigned char, std::allocator > > >(nlohmann::basic_json<std::map, std::vector, std::__cxx11::basic_string<char, std::char_traits, std::allocator >, bool, long, unsigned long, double, std::allocator, nlohmann::adl_serializer, std::vector<unsigned char, std::allocator > >)

Googling pointed to similar problems, it was this template declaration:

template
json NoPayloadClient::makeResp(T msg) {
return {{"code", 0}, {"msg", msg}};
}

it needs to be explicitly instantiated in the .cpp file so the optimizer doesn't get rid of it. Just adding a single line:

template json NoPayloadClient::makeResp(json);

fixes this. This PR sits on top of my previous 2 PR's