I am trying to use WSTP and started with the addtwo demo. I converted the template file to C using wsprep, then in Visual Studio 2013, added that, the addtwo.c file, the wstp libraries and the header file to the project. It compiled as a console app but would not link, reporting that it could not find main().

The error can be seen here:

enter image description here

What am I doing wrong?

  • $\begingroup$ Note, I'm not a windows guy! But it seems that you don't have configured your project correctly. AddTwo is a simple console application and as it looks, the project you created is not a console application. You can change that in the solution settings somewhere. Can you check that? $\endgroup$
    – halirutan
    Commented Feb 20, 2015 at 21:56
  • $\begingroup$ Please read carefully the instructions here in the WSTP documentation. $\endgroup$
    – halirutan
    Commented Feb 20, 2015 at 22:00
  • $\begingroup$ @halirutan addtwo is in fact not supposed to be a console application on Windows, but the fact that it complains about _main missing suggests that either the wrong source code is being compiled (not the Windows version of addtwo) or it's compiled with the wrong defines. @Michael, also, as I said in an earlier comment, you need to include one version of the library, presumably i4 for Mma 10, not all versions. $\endgroup$
    – Szabolcs
    Commented Feb 20, 2015 at 23:28
  • $\begingroup$ Take a look here too: mathematica.stackexchange.com/q/67787/12 $\endgroup$
    – Szabolcs
    Commented Feb 20, 2015 at 23:29
  • $\begingroup$ @Szabolcs so is this a simple mistake (for someone who is interested and read WSTP documentation)? $\endgroup$
    – Kuba
    Commented Dec 17, 2015 at 22:14

1 Answer 1


It has been over a year since I asked this question and I have since gotten the demo code to compile and have built and deployed several WSTP projects of my own. I suspect that the key problem above is that I was trying to compile a console application rather than a Win32 application.

I also notice that in the Solution Explorer above I've included several unnecessary libraries. wstp32i4.lib should suffice. @Szabolcs had both of these things right at the time.


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