Trying to get matlab mex file to work

I've been trying to run a c file in matlab with mex function. I have been getting this same error that's below. I cannot edit the names of the directory files because I do not have admin access. Everything was created automatically. I downloaded VS2010e as the compiler.

>> mex -v -g mexcallmatlab.c
-> Default options filename found in C:\Users\gsea\AppData\Roaming\MathWorks\MATLAB\R2010b 
---------------------------------------------------------------- 
->    Options file           = C:\Users\gsea\AppData\Roaming\MathWorks\MATLAB\R2010b\mexopts.bat 
      MATLAB                 = C:\Program Files (x86)\MATLAB\R2010b 
->    COMPILER               = cl 
->    Compiler flags: 
         COMPFLAGS           = /c /Zp8 /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 (x86)\MATLAB\R2010b\extern\lib\win64\microsoft" libmx.lib libmex.lib libmat.lib /MACHINE:X64 -lkernel32 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\gsea\AppData\Local\Temp\mex_Xt7aAg\templib.x" /MAP:"mexcallmatlab.mexw64.map" 
         LINKDEBUGFLAGS      = /debug /PDB:"mexcallmatlab.mexw64.pdb" 
         LINKFLAGSPOST       =  
         Name directive      = /out:"mexcallmatlab.mexw64" 
         File link directive =  
         Lib. link directive =  
         Rsp file indicator  = @ 
->    Resource Compiler      = rc /fo "mexversion.res" 
->    Resource Linker        =  
---------------------------------------------------------------- 

--> cl  /c /Zp8 /GR /W3 /EHs /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0 /DMATLAB_MEX_FILE /nologo /MD /FoC:\Users\gsea\AppData\Local\Temp\mex_Xt7aAg\mexcallmatlab.obj -I"C:\Program Files (x86)\MATLAB\R2010b"\extern\include /Z7 -DMX_COMPAT_32 mexcallmatlab.c 

mexcallmatlab.c 
    Contents of C:\Users\gsea\AppData\Local\Temp\mex_Xt7aAg\mex_tmp.rsp: 
  C:\Users\gsea\AppData\Local\Temp\mex_Xt7aAg\mexcallmatlab.obj 

--> link /out:"mexcallmatlab.mexw64" /debug /PDB:"mexcallmatlab.mexw64.pdb" /dll /export:mexFunction /LIBPATH:"C:\Program Files (x86)\MATLAB\R2010b\extern\lib\win64\microsoft" libmx.lib libmex.lib libmat.lib /MACHINE:X64 -lkernel32 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\gsea\AppData\Local\Temp\mex_Xt7aAg\templib.x" /MAP:"mexcallmatlab.mexw64.map" @C:\Users\gsea\AppData\Local\Temp\mex_Xt7aAg\mex_tmp.rsp   

LINK : warning LNK4044: unrecognized option '/lkernel32'; ignored 
LINK : fatal error LNK1104: cannot open file 'mexcallmatlab.mexw64' 

    C:\PROGRA~2\MATLAB\R2010B\BIN\MEX.PL: Error: Link of 'mexcallmatlab.mexw64' failed. 

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

>>

[Jan]

Did you install the Windows SDK?

[Stagleton]

yes, from the installer winsdk_web. Is there any configuration I have to do?

[Kaustubha Govind]

Also, do you have write permissions to your directory? Try running the mex command after starting MATLAB "as administrator".

[Stagleton]

how do I run the mex command as administrator?

Answer 1

[Friedrich]

Hi,

seems like you are trying to compile the example file in the directory where it comes with MATLAB. Under Windows 7 or Vista the UAC blocks write access to the C:\Program Files\... folders, which results in such an error. Try to copy that file to a folder where you have write access and compile it in there.

[Kaustubha Govind]

In addition, I am also uncomfortable with the use of the name "mexcallmatlab" - I would recommend using a different name because this clashes with the name of the MEX-API function mexCallMATLAB.

[Stagleton]

This sounds right, I don't have admin access on my work pc. I tried to copy the file to the desktop but still got the same error. In order to install the SDK and Microsoft Studio 2010 C++ I had to use "Windows 7 Elevated Installer".

I tried another file name 'array1.c' also. After running the command "mex array1.c", I get an output file 'array1.mexw64' but the same error as before. Is there a way around this?

Answer 2

[Stagleton]

sorry for the dumb question. To create a mex function I was not making a proper gateway. My c files were not written correctly.

This helped a bit: http://www.mathworks.se/help/techdoc/matlab_external/f29502.html

Answer 3

[Eduardo]

Hi, I am using Visual Studio with matlab and I get the same error as your when I try to compile something with the mex command:

Please how did you solve it??

LINK : fatal error LNK1181: cannot open input file 'kernel32.lib'

C:\PROGRA~1\MATLAB\R2011A\BIN\MEX.PL: Error: Link of 'field_extract.mexw64' failed.

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

[Friedrich]

Most likely a bittedness missmatch. Make sure you configured the project to be a 64bit project. Otherwise the 32bit compiler tries to open the 64bit kernel32.lib which results in the error you get.

[moataz hassan]

You need to run windows update VS10sp1-KB983509. the problem will be solve

Answer 4

[CHUANQIANG ZHANG]

I had similar problem. I was running MATLAB 2019a under windows 10.

To solve the problem, please try to run with Windows 7 compatible mode, and admin.

See attached picture. Good luck!