Error using mex (line 206), need help

I've tried to utilize someone's coding on matlab with mex file. but it doesnt work at all. how can i fix this problem?

First of all, i've tried to setup the compiler on matlab using "mex -setup" command.

and then finished the setup.

but if i run the code, error came up!

here is my command and error. it looks simple issue, but i dont have a time to figure out solution by myself ;(

>> 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/R2012a/win32.html 

Please choose your compiler for building MEX-files: 

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

Select a compiler: 
[1] Lcc-win32 C 2.4.1 in C:\PROGRA~1\MATLAB\R2012a\sys\lcc 
[2] Microsoft Visual C++ 2005 SP1 in C:\Program Files\Microsoft Visual Studio 8 

[0] None 

Compiler: 2

Please verify your choices: 

Compiler: Microsoft Visual C++ 2005 SP1  
Location: C:\Program Files\Microsoft Visual Studio 8 

Are these correct [y]/n? y

*************************************************************************** 
  Warning: Support for Microsoft Visual C++ 2005 SP1 will be discontinued in a  
           future release, at which time new versions will be supported.  
           For a list of currently supported compilers see:  
           http://www.mathworks.com/support/compilers/R2012a/win32.html 
*************************************************************************** 

Trying to update options file: C:\Users\ MichaelKim\AppData\Roaming\MathWorks\MATLAB\R2012a\mexopts.bat 
From template:              C:\PROGRA~1\MATLAB\R2012a\bin\win32\mexopts\msvc80opts.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/techdoc/matlab_external/bsflnue-1.html 
           Building with the -largeArrayDims option enables the new API. 
************************************************************************** 

>> mex mhaLoad.cpp

    C:\PROGRA~1\MATLAB\R2012A\BIN\MEX.PL: Error: 'mhaLoad.cpp' not found. 

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

is there are simple way to solve?

I'm working on Win 7 32bit, matlab R2012a.

Thanks :)

[Ahmad Naghavi]

I have got somewhat the same situation. I have a C code which has been compiled through a linux version of MATLAB, and its extension is 'mexglx'. Now that I am trying to compile the C source code under the Windows version of MATLAB, I am getting errors saying that the syntax is old somehow! But the point is that the error is pertaining to the main and genuine C files of MATLAB directory itself. This is the output I get:

Error using mex
multithread_ks_simulator.c
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(193) : error C4980: '__value' : use of this keyword requires
/clr:oldSyntax command line option
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(193) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(196) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(202) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(205) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(231) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(235) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(346) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls.h(350) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(193) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(196) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(202) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(205) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(231) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(235) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(346) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_float.h(350) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(193) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(196) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(202) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(205) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(231) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(235) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(346) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\bits/mathcalls_long_double.h(350) : error C2059: syntax error : '__value'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\stddef.h(15) : error C2054: expected '(' to follow '__SIZE_TYPE__'
C:\Program Files\MATLAB\R2016b\polyspace\verifier\cxx\include\include-libc\stddef.h(18) : error C2085: '__WCHAR_TYPE__' : not in formal parameter list

In fact, I have searched for any solution, and then I was directed here. I would be so happy if you help me with this.

Thanks.

[Walter Roberson]

https://social.msdn.microsoft.com/Forums/vstudio/en-US/adabf801-8006-47bd-9495-972e04df5c78/use-of-value-as-a-variable-name-in-unmanaged-c-code?forum=vcgeneral

Answer 1

[Jan]

You get this error message:

 Error: 'mhaLoad.cpp' not found

This means, that MEX cannot find this file. Is it in the current directory? If not, either use CD to adjust the current directory or use a full path name:

mex D:\MatlabFiles\mhaLoad.cpp

[MichaelK Kim]

Thanks! it was solved!! :) based on your comments, it was solved! i can compile it!

[Jan]

Please accept the answer, if it solves your problem. This would signal other readers, that no further assistance is required.

[shruthi hr]

this problem is not solved by putting its path also, give any ideas for this...............

[Wendell]

I have the same problem...i tried the full path name, but the error is still there.." C:\PROGRA~1\MATLAB\R2013A\BIN\MEX.PL: Error: 'D:\MatlabFiles\Build2Dmeshinfocpp.cpp' not found."

[Walter Roberson]

Wendell does that file exist? For example should you have used

D:\MatlabFiles\Build2D\meshinfocpp.cpp

Or perhaps

D:\MatlabFiles\Build2Dmeshinfo.cpp

Answer 2

[SAMEER ahamed]

Hi,

I am new for Matlab , please let me know how i cna used viola jones algorithm code in matlab . when i have matlab command window compile mext -setup , i am getting error like please let me know step by step process , how would like to compile ?

.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

No supported SDK or compiler was found on this computer. 
For a list of supported compilers, see  
http://www.mathworks.com/support/compilers/R2013a/win64.html  

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

[Walter Roberson]

http://www.mathworks.com/support/compilers/R2013a/

Answer 3

[nyanphyo aung]

what version of you use matlab... matlab 2007b and visual studio 2000 will be ok,and truetime 1.5

[Walter Roberson]

"Visual Studio 2000" seems to be Microsoft Visual C++ version 6.0. MATLAB R2007b supported that for Windows 32 but not for Windows 64, for which Visual C++ 2005 SP1 (version 8.0) was the earliest supported product in that line. Microsoft SDK 14.0 was supported for Windows 64 but not for Windows 32. The C++ 2005 SP1 was supported for both.

Answer 4

[Prasoon Garg]

Hi all,

*For macOS only*** All the problems related to mex are resolved after the installation of Xcode. After installing Xcode, run the command:

mex -setup

After this try to run the code.

[Alejandro Dominguez Guadarrama]

I'm working with version R2016b and I have Xcode installed. The problem in this case is the version of Xcode. Documentation of Matlab states the R2016b needs Xcode 6.x, 7.x, but I have Xcode 11.x.

I try running "mex -setup" but it doesn't work, I get the message...

"Error using mex

No supported compiler or SDK was found. For options, visit

http://www.mathworks.com/support/compilers/R2016b/maci64.html. "

Any idea how to solve this issue?

Alex