Undefined symbols with const methods

[hwiedPro]

Hi,

The following diff makes a difference whether the built python module contains undefined symbols or not.
If I have declared my methods const, I get undefined symbols for the methods of Client.

If someone has an idea, I'd highly appreciate.

Thanks in advance!

------------------------------ include/Client.hpp ------------------------------
index 1b18956..0290f75 100644
@@ -1,46 +1,46 @@
 #pragma once
 
 #include <memory>
 #include <some/other/includes.hpp>
 #include <nlohmann/json.hpp>
 
 using XTypePtr = std::shared<XType>;

 class Client {
    public:
       Client();
       void setDbAddress(const std::string &_dbAddress);
 
-      XTypePtr load(const std::string &uri, const std::string &classname = "", const std::string &graph="") const;
-      void remove(const std::string &uri, const std::string &graph="") const;
-      void update(std::vector<XTypePtr> xtypes, const std::string &graph="") const;
-      void update(nl::json xtypes, const std::string &graph="") const;
-      std::vector<XTypePtr> find(const std::string &classname, const nl::json &properties, const std::string &graph="") const;
+      XTypePtr load(const std::string &uri, const std::string &classname = "", const std::string &graph="");
+      void remove(const std::string &uri, const std::string &graph="");
+      void update(std::vector<XTypePtr> xtypes, const std::string &graph="");
+      void update(nl::json xtypes, const std::string &graph="");
+      std::vector<XTypePtr> find(const std::string &classname, const nl::json &properties, const std::string &graph="");
   };

----------------------------- pybind/pyClient.cpp -----------------------------
index cffd0fe..9eb4480 100644
@@ -3,42 +3,42 @@
 #include <pybind11_json/pybind11_json.hpp>
 #include <pybind11/stl.h>
 
 #include "Client.hpp"
 
 namespace py = pybind11;
 namespace nl = nlohmann;
 
 void PYBIND11_INIT_CLASS_CLIENT(py::module_& m) {
     py::class_<Client >(m, "Client")
         .def(py::init())
         .def("setDbAddress", &Client::setDbAddress,
           py::arg("dbAddress"))
         .def("load", &Client::load,
           py::arg("uri"), py::arg("classname") = "", py::arg("graph") = "")
         .def("remove", &Client::remove,
           py::arg("uri"), py::arg("graph") = "")
-        .def("update", py::overload_cast<std::vector<XTypePtr>, const std::string&>(&Client::update, py::const_),
+        .def("update", py::overload_cast<std::vector<XTypePtr>, const std::string&>(&Client::update),
           py::arg("xtypes"), py::arg("graph") = "")
-        .def("update", py::overload_cast<nl::json, const std::string&>(&Client::update, py::const_),
+        .def("update", py::overload_cast<nl::json, const std::string&>(&Client::update),
           py::arg("xtypes"), py::arg("graph") = "")
         .def("find", &Client::find,
           py::arg("classname"), py::arg("properties"), py::arg("graph") = "");
 }

-------------------------------- src/Client.cpp --------------------------------
index 98ba318..1fac46e 100644
@@ -10,157 +10,157 @@
 Client::Client()
 {
 // some code
 }
 
 void Client::setDbAddress(const std::string &_dbAddress)
 {
 // non-const code
 }
 
-XTypePtr Client::load(const std::string &uri, const std::string &classname, const std::string &graph) const
+XTypePtr Client::load(const std::string &uri, const std::string &classname, const std::string &graph)
 {
 // const code
 }
 
-void Client::remove(const std::string &uri, const std::string &graph) const
+void Client::remove(const std::string &uri, const std::string &graph)
 {
 // const code
 }
 
-void Client::update(nl::json xtypes, const std::string &graph) const
+void Client::update(nl::json xtypes, const std::string &graph)
 {
 // const code
 }
 
-void Client::update(std::vector<XTypePtr> xtypes, const std::string &graph) const
+void Client::update(std::vector<XTypePtr> xtypes, const std::string &graph)
 {
 // const code
 }
 
-std::vector<XTypePtr> Client::find(const std::string &classname, const nl::json &properties, const std::string &graph) const
+std::vector<XTypePtr> Client::find(const std::string &classname, const nl::json &properties, const std::string &graph)
 {
 // const code
 }