Mex files and compiler

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Antoine 2013-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/64267-mex-files-and-compiler

Hello everyone,

I have trouble to execute mex files and to set up my compiler...

My MatLab version is R2011b, so according to this page http://www.mathworks.se/support/compilers/R2011b/win32.html, it should support the following compilers (that I have): Microsoft Windows SDK 7.1 (with .NET Framework 4.0) and Microsoft Visual C++ 2010 Express.

When I use the command mex -setup, I can select the visual c++ compiler for example, and it seems to work just fine (see a copy of it at the end of this post). But after that, when I want to use it, here what I get :

-------

>> mex hello.cpp Error: Could not find the compiler "cl" on the DOS path.

         Use mex -setup to configure your environment properly. 
C:\PROGRA~1\MATLAB\R2011B\BIN\MEX.PL: Error: Unable to locate compiler.

Error using mex (line 206)

Unable to complete successfully.

-------

I read a lot on the internet but unsuccessfully, I did not find any solution for my current problem... Do you think it is about the note 3 at the end of the page of the previous link ? Or because I run a 64 bits machine ?

For information, here is what I have by using the mex -setup command :

-------

>> mex -setup

Welcome to mex -setup. This utility will help you set up a default compiler. For a list of supported compilers, see http://www.mathworks.com/support/compilers/R2011b/win64.html

Please choose your compiler for building MEX-files:

Would you like mex to locate installed compilers [y]/n? n

Select a compiler:

[1] Intel C++ 12.0 (with Microsoft Visual C++ 2008 SP1 linker)

[2] Intel C++ 12.0 (with Microsoft Visual C++ 2010 linker)

[3] Intel C++ 11.1 (with Microsoft Visual C++ 2008 SP1 linker)

[4] Intel Visual Fortran 12.0 (with Microsoft Visual C++ 2008 SP1 linker)

[5] Intel Visual Fortran 12.0 (with Microsoft Visual C++ 2008 Shell linker)

[6] Intel Visual Fortran 12.0 (with Microsoft Visual C++ 2010 linker)

[7] Intel Visual Fortran 11.1 (with Microsoft Visual C++ 2008 SP1 linker)

[8] Intel Visual Fortran 11.1 (with Microsoft Visual C++ 2008 Shell linker)

[9] Microsoft Software Development Kit (SDK) 7.1

[10] Microsoft Visual C++ 2005 SP1

[11] Microsoft Visual C++ 2008 SP1

[12] Microsoft Visual C++ 2010

[13] Microsoft Visual C++ 2010 Express

[0] None

Compiler: 13

Your machine has a Microsoft Visual C++ 2010 Express compiler located at C:\Program Files (x86)\Microsoft Visual Studio 10.0. Do you want to use this compiler [y]/n? y

Please verify your choices:

Compiler: Microsoft Visual C++ 2010 Express Location: C:\Program Files (x86)\Microsoft Visual Studio 10.0

Are these correct [y]/n? y

*************************************************************************

Warning: MEX-files generated using Microsoft Visual C++ 2010 require 
         that Microsoft Visual Studio 2010 run-time libraries be  
         available on the computer they are run on. 
         If you plan to redistribute your MEX-files to other MATLAB 
         users, be sure that they have the run-time libraries. 
***************************************************************************

Trying to update options file: C:\Users\Antoine\AppData\Roaming\MathWorks\MATLAB\R2011b\mexopts.bat From template: C:\PROGRA~1\MATLAB\R2011b\bin\win64\mexopts\msvc100freeopts.bat

Done . . .

************************************************************************

Warning: The MATLAB C and Fortran API has changed to support MATLAB 
         variables with more than 2^32-1 elements.  In the near future 
         you will be required to update your code to utilize the new 
         API. You can find more information about this at: 
         http://www.mathworks.com/support/solutions/en/data/1-5C27B9/?solution=1-5C27B9 
         Building with the -largeArrayDims option enables the new API. 
**************************************************************************

-------

Or again :

-------

>> mex.getCompilerConfigurations()

ans =

mex.CompilerConfiguration
Package: mex
Properties:
          Name: 'Microsoft Visual C++ 2010 Express'
  Manufacturer: 'Microsoft'
      Language: 'C++'
       Version: '10.0'
      Location: 'C:\Program Files (x86)\Microsoft Visual Studio 10.0'
       Details: [1x1 mex.CompilerConfigurationDetails]
-------

If someone could enlight me a little bit, that would be great !

Thank you

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Antoine 2013-2-20

OK, I just did the same thing than this morning, which is deleting net framework + SDK in order to install them again. But this time I reboot my computer between the 2 installs and guess what... now it works !

I am so angry at Microsoft softwares right now ! I told myself I won't make any post for an error I could easily fix by myself, but seems like I did !

Anyway, I am really sorry for the inconvenience and thank you very much for your time !

Edoardo Alberti 2013-3-4

Dear Antoine, I am facing the same issue as you are doing.. my matlab says

" Error: The Microsoft Windows Software Development Kit (SDK) installation is incomplete. Please be sure that the .NET Framework is installed correctly before attempting to reinstall the SDK. "

could you indicate what is the installation sequence that you adopted? I already uninstalled and re-installed following your suggestion to restart the machine, but apparently I am still doing something not correct.. thanks Edo

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Answer 1

Walter Roberson 2013-2-20

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/64267-mex-files-and-compiler#answer_75877

http://www.mathworks.co.uk/matlabcentral/answers/58684-mex-compiler-not-found-problem

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Antoine 2013-2-20

Yep I saw that one, but it didn't worked (see my previous comment).

Anyway, topic can be close.

Thanks

Image Analyst 2013-3-4

If you're done with the topic, then you click the "Accept this Answer" link.

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Answer 2

Ulzii 2013-6-8

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/64267-mex-files-and-compiler#answer_88159

Hi guys. i have same problem like your problem. Did you solve it?. if solved already, how could you solve it ? /sorry my English not good/

thanks Ulzii

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Ulzii 2013-6-10

在 MATLAB Online 中打开

hi, my problem is still not solved. i deinstalled every ms software then after reinstall all of this. also i try to compile many .c files , but every files same error. so i think it is not code mistake,also compiler error.

 like this :
C:\PROGRA~1\MATLAB\R2011B\BIN\MEX.PL: Error: Compile of 'zconv2S.c' failed.

Error using mex (line 206) Unable to complete successfully.

>> mex.getCompilerConfigurations()

ans =

mex.CompilerConfiguration
Package: mex
Properties:
          Name: 'Microsoft Visual C++ 2010 Express'
  Manufacturer: 'Microsoft'
      Language: 'C++'
       Version: '10.0'
      Location: 'C:\Program Files (x86)\Microsoft Visual Studio 10.0'
       Details: [1x1 mex.CompilerConfigurationDetails]
Methods

Methods for class mex.CompilerConfiguration:

CompilerConfiguration

Thanks.

Kaustubha Govind 2013-6-10

编辑：Kaustubha Govind 2013-6-10

Is your error the same as the original one "Error: Could not find the compiler "cl" on the DOS path."? You didn't mention the full error message that you're seeing.

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Mex files and compiler

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