Unable to locate a C-compiler required by Stateflow and MATLAB Function blocks

Hello, let me start by saying what I have installed:

• Matlab/Simulink 2013a - 64 bit
• Microsoft Visual C++ Compilers 2010 SP1 Standard - x64 and x86 (both installed)
• Microsoft Visual C++ 2010 Redistributable - 10.0.40219, x64 and x86 (both installed)
• Microsoft Windows SDK 7.1
• Microsoft .NET Framework 4 and 4.5.2
• Windows 7

I work for a company that requires that I use these exact versions of software for compatibility issues so please don't recommend that I get "newer versions" of any of these pieces of software.

Here's what I'm trying to do

• Setup the compiler as follows:

1. Open Matlab
2. enter 'mex -setup'
3. choose my compiler
4. check the results of setting the compiler using 'mex.getCompilerConfigurations()'

Here's the code and output from this:

>> 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/R2013a/win64.html 

Please choose your compiler for building MEX-files: 

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

Select a compiler: 
[1] Microsoft Software Development Kit (SDK) 7.1 in c:\Program Files (x86)\Microsoft Visual Studio 10.0 

[0] None 

Compiler: 1

Please verify your choices: 

Compiler: Microsoft Software Development Kit (SDK) 7.1 
Location: c:\Program Files (x86)\Microsoft Visual Studio 10.0 

Are these correct [y]/n? y

*************************************************************************** 
  Warning: MEX-files generated using Microsoft Windows Software Development 
           Kit (SDK) 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\iw542d\AppData\Roaming\MathWorks\MATLAB\R2013a\mexopts.bat 
From template:              C:\PROGRA~1\MATLAB\R2013a\bin\win64\mexopts\mssdk71opts.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/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html  
           Building with the -largeArrayDims option enables the new API. 
************************************************************************** 

>> CC = mex.getCompilerConfigurations()
Reference to non-existent field 'The system cannot find the path specified.
VSINSTALLDIR'.

Error in mex.CompilerConfigurationFactory/determineLocation (line 281)
                location = detailStruct.(outputValue);

Error in mex.CompilerConfigurationFactory/process (line 127)
                    basicStructArray(numberOfLangs).Location = determineLocation(obj,
                    storageLocations{index}, basicStructArray, detailsStruct);

Error in mex.getCompilerConfigurations (line 56)
    compConfig = process(ccF);

>>

Next, I'm trying to build a Simulink model and I get the following error message

Unable to locate a C-compiler required by Stateflow and MATLAB Function blocks.
Use 'mex -setup' to select a supported C-compiler.

HOW DO I FIX THIS COMPILER ISSUE?

Answer 1

[Ryan Livingston]

The error from mex.getCompilerConfigurations() states that VSINSTALLDIR cannot be found. In MATLAB run:

getenv VSINSTALLDIR

to see if you get a value for that variable. If not, I would:

1. Restart Windows to see if the SDK installation settings take hold after rebooting

2. Try to MEX a simple file. In a directory where you have write privileges:

copyfile(fullfile(matlabroot,'extern','examples','mex','yprime.c'),pwd)
mex -v yprime.c

Does that work? If not, that will need to be resolved first.

[Brad]

Ok thanks,

I did:

getenv VSINSTALLDIR

And got a blank output:

''

Next, I did your two steps and it seemed to work:

>> copyfile(fullfile(matlabroot,'extern','examples','mex','yprime.c'),pwd)
>> mex -v yprime.c
*************************************************************************** 
  Warning: Neither -compatibleArrayDims nor -largeArrayDims is selected.  
           Using -compatibleArrayDims. In the future, MATLAB will require 
         the use of -largeArrayDims and remove the -compatibleArrayDims  
         option. For more information, see: 
           http://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html  
**************************************************************************** 

-> Default options filename found in C:\Users\iw542d\AppData\Roaming\MathWorks\MATLAB\R2013a 
---------------------------------------------------------------- 
->    Options file           = C:\Users\iw542d\AppData\Roaming\MathWorks\MATLAB\R2013a\mexopts.bat 
      MATLAB                 = C:\Program Files\MATLAB\R2013a 
->    COMPILER               = cl 
->    Compiler flags: 
         COMPFLAGS           = /c /GR /W3 /EHs /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0 /DMATLAB_MEX_FILE /nologo /MD 
         OPTIMFLAGS          = /O2 /Oy- /DNDEBUG 
         DEBUGFLAGS          = /Z7 
         arguments           =  
         Name switch         = /Fo 
->    Pre-linking commands   =  
->    LINKER                 = link 
->    Link directives: 
         LINKFLAGS           = /dll /export:mexFunction /LIBPATH:"C:\Program Files\MATLAB\R2013a\extern\lib\win64\microsoft" libmx.lib libmex.lib libmat.lib /MACHINE:X64 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /manifest /incremental:NO /implib:"C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\templib.x" /MAP:"yprime.mexw64.map" 
         LINKDEBUGFLAGS      = /debug /PDB:"yprime.mexw64.pdb" 
         LINKFLAGSPOST       =  
         Name directive      = /out:"yprime.mexw64" 
         File link directive =  
         Lib. link directive =  
         Rsp file indicator  = @ 
->    Resource Compiler      = rc /fo "mexversion.res" 
->    Resource Linker        =  
---------------------------------------------------------------- 

--> cl  /c /GR /W3 /EHs /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0 /DMATLAB_MEX_FILE /nologo /MD /FoC:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\yprime.obj -I"C:\Program Files\MATLAB\R2013a\extern\include" -I"C:\Program Files\MATLAB\R2013a\simulink\include" /O2 /Oy- /DNDEBUG -DMX_COMPAT_32 yprime.c 

yprime.c 
    Contents of C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\mex_tmp.rsp: 
  C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\yprime.obj 

--> link /out:"yprime.mexw64" /dll /export:mexFunction /LIBPATH:"C:\Program Files\MATLAB\R2013a\extern\lib\win64\microsoft" libmx.lib libmex.lib libmat.lib /MACHINE:X64 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /manifest /incremental:NO /implib:"C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\templib.x" /MAP:"yprime.mexw64.map"  @C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\mex_tmp.rsp   

     Creating library C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\templib.x and object C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\templib.exp 

--> del "C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\templib.x" "C:\Users\iw542d\AppData\Local\Temp\mex_Lrgi7n\templib.exp" 

--> mt -outputresource:"yprime.mexw64;2" -manifest "yprime.mexw64.manifest" 

Microsoft (R) Manifest Tool version 6.1.7716.0  
Copyright (c) Microsoft Corporation 2009.   
All rights reserved.  

--> del "yprime.mexw64.manifest" 

--> del "yprime.mexw64.map"

What do you think the next steps should be?

[Ryan Livingston]

After restarting Windows, does the model now simulate?

If not, you may want to contact MathWorks techincal support.

There is also the related:

http://www.mathworks.com/matlabcentral/answers/96611-how-do-i-install-microsoft-visual-c-2010-and-microsoft-windows-sdk-7-1

that gives a few troubleshooting steps.