[zeromq-dev] CZMQ Visual Studio

KIU Shueng Chuan nixchuan at gmail.com
Mon Oct 7 12:25:56 CEST 2013

Hi, I just tried creating an x86 MSVC import lib for a libzmq.dll generated
by MINGW32 on 32-bit Windows.  I did get it to work. I imagine
cross-compiled, 64-bit versions and libczmq.dll would work too.

There's no C++ name mangling issue since libzmq exports a C interface.
The errors you encountered when compiling czmq with MSVC is probably due to
the C99 style used in czmq.

Follow instructions on the web to create a .def file:
nm libzmq.dll | findstr /C:" T _z" > libzmq.def

then edit the .def file so that it looks like this:

How does your .def file look like?

Generate the .lib file:
lib.exe /machine:x86 /def:libzmq.def

Tested it out with a simple zeromq program compiled with MSVC.

On Mon, Oct 7, 2013 at 1:43 PM, HG Choi <c.hogyun at gmail.com> wrote:

> To Developers,
> Even though I do not enjoy dealing with Windows, I must do so at this
> point in time. I have successfully cross-compiled libzmq, libczmq, and
> libfmq for x86_64 Windows using Mingw under Linux. All three were tested
> using the built selftests.exe. So now I know it is possible to use all
> three libraries in Windows.
> But the issue is that the current QT project that I am tying to integrate
> FileMQ (zmq, czmq) into is a MSVC project. Thus my cross compiled mingw c++
> libs are not compatible with the msvc compiler. I have been told this is
> due to C++ name mangling issues.
> http://www.mingw.org/wiki/MixingCompilers
> I have tried to create mvsc compatible libs through DLLs using the visual
> studio dumpbin, dlltool, and def file method, but also no luck. Maybe
> someone has succeeded?
> Cross compiliation with x86_64-w64-mingw32 toolset to Windows definitely
> works, but as far as I know, for MSVC, I am not sure. I have tried using
> the i586-mingw32msvc but without success..
> For my situation, the ideal method of building these libraries is to use
> the msvc solution files on a Windows host, but I could only get libzmq to
> build cleanly without errors.
> Below is the errors I receive from a fresh czmq-master on Visual Studio
> 2010.
> http://pastebin.com/7piDizJA
> If anyone has any clues to what is causing the errors or successfully
> built CZMQ and FMQ using Visual Studio for Windows x86_64, I would really
> appreciate the guidance.
> Thank you for reading,
> Ho-Gyun Choi
> _______________________________________________
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> zeromq-dev at lists.zeromq.org
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