[zeromq-dev] Issue with Zmq.hpp - string is not a member of std

Rajesh Khan rajeshkhan808 at gmail.com
Wed Jul 3 18:24:38 CEST 2013


This is how I have my headers now
#include <string>
#include <iostream>
#include <zmq.hpp>
I am still  using the same zmq.hpp file.
Now I am getting the following error

Error    1    error LNK2019: unresolved external symbol __imp__zmq_msg_init
referenced in function "public: __thiscall zmq::message_t::message_t(void)"
(??0message_t at zmq@@QAE at XZ)    c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    2    error LNK2019: unresolved external symbol __imp__zmq_errno
referenced in function "public: __thiscall zmq::error_t::error_t(void)"
(??0error_t at zmq@@QAE at XZ)    c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    3    error LNK2019: unresolved external symbol __imp__zmq_strerror
referenced in function "public: virtual char const * __thiscall
zmq::error_t::what(void)const " (?what at error_t@zmq@@UBEPBDXZ)
c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    4    error LNK2019: unresolved external symbol
__imp__zmq_msg_init_size referenced in function "public: __thiscall
zmq::message_t::message_t(unsigned int)" (??0message_t at zmq@@QAE at I@Z)
c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    5    error LNK2019: unresolved external symbol
__imp__zmq_msg_close referenced in function "public: __thiscall
zmq::message_t::~message_t(void)" (??1message_t at zmq@@QAE at XZ)
c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    6    error LNK2019: unresolved external symbol __imp__zmq_msg_data
referenced in function "public: void * __thiscall
zmq::message_t::data(void)" (?data at message_t@zmq@@QAEPAXXZ)
c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    7    error LNK2019: unresolved external symbol __imp__zmq_init
referenced in function "public: __thiscall zmq::context_t::context_t(int)"
(??0context_t at zmq@@QAE at H@Z)    c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    8    error LNK2019: unresolved external symbol __imp__zmq_term
referenced in function "public: void __thiscall
zmq::context_t::close(void)" (?close at context_t@zmq@@QAEXXZ)
c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    9    error LNK2019: unresolved external symbol __imp__zmq_socket
referenced in function "public: __thiscall zmq::socket_t::socket_t(class
zmq::context_t &,int)" (??0socket_t at zmq@@QAE at AAVcontext_t@1 at H@Z)
c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    10    error LNK2019: unresolved external symbol __imp__zmq_close
referenced in function "public: void __thiscall zmq::socket_t::close(void)"
(?close at socket_t@zmq@@QAEXXZ)    c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    11    error LNK2019: unresolved external symbol __imp__zmq_bind
referenced in function "public: void __thiscall zmq::socket_t::bind(char
const *)" (?bind at socket_t@zmq@@QAEXPBD at Z)    c:\Users\User\documents\visual
studio 2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    12    error LNK2019: unresolved external symbol
__imp__zmq_msg_send referenced in function "public: bool __thiscall
zmq::socket_t::send(class zmq::message_t &,int)" (?send at socket_t@zmq@
@QAE_NAAVmessage_t at 2@H at Z)    c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    13    error LNK2019: unresolved external symbol
__imp__zmq_msg_recv referenced in function "public: bool __thiscall
zmq::socket_t::recv(class zmq::message_t *,int)" (?recv at socket_t@zmq@
@QAE_NPAVmessage_t at 2@H at Z)    c:\Users\User\documents\visual studio
2010\Projects\ZeroMqTest\ZeroMqTest\main.obj    ZeroMqTest
Error    14    error LNK1120: 13 unresolved externals
c:\users\user\documents\visual studio
2010\Projects\ZeroMqTest\Debug\ZeroMqTest.exe    ZeroMqTest



On Wed, Jul 3, 2013 at 12:17 PM, <Richard_Newton at waters.com> wrote:

> Hi,
>
> Pull request *https://github.com/zeromq/cppzmq/pull/15*<https://github.com/zeromq/cppzmq/pull/15>
>  was merge that broke this, there is a pull request pending, *
> https://github.com/zeromq/cppzmq/pull/22*<https://github.com/zeromq/cppzmq/pull/22>,
> that fixes this but the C++ bindings tend to be very slow at merging
> requests.
>
> You can either add a #include <string> to zmq.hpp for now or #include
> <string> before you #include <zmq.hpp> in your source code.
>
> Ric.
>
>
> [image: Inactive hide details for "Rajesh Khan" ---03/07/2013 05:09:17
> PM---I just downloaded ZMQ from http://www.zeromq.org/intro:get-]"Rajesh
> Khan" ---03/07/2013 05:09:17 PM---I just downloaded ZMQ from
> http://www.zeromq.org/intro:get-the-software as a windows source. And I s
>
> From: "Rajesh Khan" <rajeshkhan808 at gmail.com>
> To: zeromq-dev at lists.zeromq.org
> Date: 03/07/2013 05:09 PM
> Subject: [zeromq-dev] Issue with Zmq.hpp - string is not a member of std
> Sent by: zeromq-dev-bounces at lists.zeromq.org
> ------------------------------
>
>
>
> I just downloaded ZMQ from *http://www.zeromq.org/intro:get-the-software*<http://www.zeromq.org/intro:get-the-software> as
> a windows source. And I successfully built it.I then downloaded the Zmq.hpp
> C++ binding from *https://github.com/zeromq/cppzmq*<https://github.com/zeromq/cppzmq> and
> placed it in the zeromq-3.2.3\include folder. I am using VS2010 to test my
> first example which is:
>
> #include <zmq.hpp>
> #include <string>
> #include <iostream>
> //#include <windows.h>
>
> using namespace std;
> int main ()
> {
>     // Prepare our context and socket
>     zmq::context_t context (1);
>     zmq::socket_t socket (context, ZMQ_REP);
>     socket.bind ("tcp://*:5555");
>
>     while (true) {
>         zmq::message_t request;
>
>         // Wait for next request from client
>         socket.recv (&request);
>         std::cout << "Received Hello" << std::endl;
>
>         // Do some 'work'
>         //sleep (1);
>
>         // Send reply back to client
>         zmq::message_t reply (5);
>         memcpy ((void *) reply.data (), "World", 5);
>         socket.send (reply);
>     }
>     return 0;
> }
>
> In my VS2010 I included the additional include directories  to point to
> zeromq-3.2.3\include and zeromq-3.2.3\src and I get the following errors
> when attempting to build the project
>
> Error    1    error C2039: 'string' : is not a member of 'std'
> C:\zeromq-3.2.3\include\zmq.hpp    506    1    ZeroMqTest
> Error    2    error C2146: syntax error : missing ';' before identifier
> 'monaddr'    C:\zeromq-3.2.3\include\zmq.hpp    506    1    ZeroMqTest
> Error    3    error C4430: missing type specifier - int assumed. Note: C++
> does not support default-int    C:\zeromq-3.2.3\include\zmq.hpp    506
> 1    ZeroMqTest
> Error    4    error C4430: missing type specifier - int assumed. Note: C++
> does not support default-int    C:\zeromq-3.2.3\include\zmq.hpp    506
> 1    ZeroMqTest
> Error    5    error C2065: 'monaddr' : undeclared identifier
> C:\zeromq-3.2.3\include\zmq.hpp    369    1    ZeroMqTest
> Error    6    error C2039: 'string' : is not a member of 'std'
> C:\zeromq-3.2.3\include\zmq.hpp    369    1    ZeroMqTest
> Error    7    error C3861: 'string': identifier not found
> C:\zeromq-3.2.3\include\zmq.hpp    369    1    ZeroMqTest
> Error    8    error C2065: 'monaddr' : undeclared identifier
> C:\zeromq-3.2.3\include\zmq.hpp    415    1    ZeroMqTest
> Error    9    error C2228: left of '.c_str' must have
> class/struct/union    C:\zeromq-3.2.3\include\zmq.hpp    415    1
> ZeroMqTest
>
> Any suggestions on what I might be doing wrong
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