mex compile is not working

I have installed the Microsoft Visual C++ 2010 compiler. I am running 64 bit matlab on a 64 bit machine, matlab 2010b. The compiler works when running stateflow models.

When I try to mex a .c file I get this:

>> mex write_c.c
C:\Users\STEVE~1.FRA\AppData\Local\Temp\mex_4UINXY\write_c.obj : fatal error    LNK1112: module machine type 'X86' conflicts with target machine type 'x64' 

C:\PROGRA~1\MATLAB\R2010B~1\BIN\MEX.PL: Error: Link of 'write_c.mexw64' failed. 

??? Error using ==> mex at 208
Unable to complete successfully.

What is wrong?

[Titus Edelhofer]

Hi Steven,

just to be sure: I assume you wrote

mex write_c.c

and the "C:\Users\..." is already the error message. Try

mex -v write_c.c

and take a look at the output (or post it here for help) ...

Titus

Answer 1

[Aditya Jain]

The issue arises due to a Microsoft product bug where if you have installed Visual Studio 2010 Service Pack 1 on a system with Windows SDK 7.1, then the x64 compilers and Visual C++ libraries are removed.

You can access the following link for more information on this:

http://msdn.microsoft.com/en-us/visualc/gg697159

The following link from Microsoft provides a resolution to the issue:

http://blogs.msdn.com/b/vcblog/archive/2011/03/31/10148110.aspx

The download page for the update of the SDK compilers is mentioned below:

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=689655B4-C55D-4F9B-9665-2C547E637B70&displaylang=en

[Martin Gulan]

Dear Aditya and others;

when I run

>>mex work/obj_target/test.obj work/interface/test_mex.c  -output test

I receive almost the same output, i.e.:

Building with 'Microsoft Visual C++ 2012 (C)'.
Error using mex
work/obj_target/test.obj: fatal error LNK1112:
module machine type 'X86' conflicts with target machine type 'x64'

on my x64-based machine with Win7_64bit, MATLAB2014a_64bit and Microsoft Visual Studio 2012 . Any advice here, please? I am trying to solve this for days and slowly runing out of time, hence I will appreciate any help a lot.

Martin