Compiler error

Hey,

I have this error on my pc when I try to work with a "Embedded Matlab function block"

"Unable to locate 'mexopts.bat', and therefore cannot determine which compiler to use for simulation builds. Use 'mex -setup' to select a supported compiler."

I am using Matlab verR2010a win 64 bit.Do let me know if additional information is required.

Kamran Qureshi

Answer 1

[Walter Roberson]

At the command line, have you typed

mex -setup

??

Which compiler do you have installed? There are only a few supported compilers for that version.

[Kamran]

Sorry for very late reply

Select a compiler:

[1] Microsoft Visual C++ 2008 Express in D:\VC

[0] None

these are the compilers available and on trying to install the first one I get an error

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

Error: Could not find the 64-bit compiler. This may indicate that the

"X64 Compilers and Tools" or the Microsoft Windows Software

Development Kit (SDK) is not installed. To build 64-bit binaries,

Microsoft Visual C++ 2008 Express Edition requires that these two

packages be properly installed.

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

Trying to update options file: C:\Users\Kamran\AppData\Roaming\MathWorks\MATLAB\R2010a\compopts.bat

From template: D:\INSTAL~1\MATLAB~1\bin\win64\mbuildopts\msvc90freecompp.bat

Done . . .

Kamran

Answer 2

[Chirag Gupta]

Hi Kamran,

You should try this solution: http://www.mathworks.com/support/solutions/en/data/1-6IJJ3L/?solution=1-6IJJ3L

On 64 bit systems, you need a 64 bit compiler. By default, MSVC does not install the 64 bit Compiler tools as indicated by the error message.

[Kamran]

The above thread helped in resolving mexopt.bat error.

Thanx to Chirag Gupta.

Now there is a make error. Any one know what this is all about.

Kamran

[Walter Roberson]

Please post more information about the make error.

[Kamran]

Well its a little long ill try to make it readable though

"Making simulation target "untitled_sfun", ...

C:\Users\Kamran\Documents\MATLAB\slprj\_sfprj\untitled\_self\sfun\src>call "mexopts.bat"

Microsoft (R) Program Maintenance Utility Version 10.00.30319.01

Copyright (C) Microsoft Corporation. All rights reserved.

### Compiling "untitled_sfun.c"

cl.exe /c /Zp8 /GR /W3 /EHs /D_CRT_SECURE_NO_DEPRECATE/D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0 /DMATLAB_MEX_FILE /nologo /MD /MD /I "d:\installed software\matlab\extern\include" /I "d:\installed software\matlab\simulink\include" /I

"d:\installed software\matlab\stateflow\c\mex\include" /I

"d:\installed software\matlab\stateflow\c\debugger\include"

"untitled_sfun.c"

untitled_sfun.c

d:\installed software\matlab\extern\include\tmwtypes.h(43) :

fatal error C1083: Cannot open include file: 'limits.h': No such

file or directory

NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64\cl.exe"' : return code '0x2'

Stop."

Hope its what you wanted.

Kamran

[Arnaud Miege]

What code are you using in your Embedded MATLAB Function block?

[Kaustubha Govind]

Do you see limits.h present in C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\? If not, your MSVC installation might be corrupt.

[Kamran]

well I re-installed my Visual C as well but still the same error.Also the only thing is its not registered, I dont think it should prevent it from using the compiler.

Kamran

[Kamran]

One other thing I'd like to mention, I dont see include folder in VC 10. IS the path provided correct ?

Kamran

Answer 3

[Kamran]

I am just inverting my input,

y = 1-u;

Also can any one clerify, if this is a Matlab error or the code error.

Kamran

Answer 4

[Kamran]

I copied and pasted this piece of code from the thread Chirag Gupta posted earlier

For example, to select the compiler and build the YPRIME.C example MEX-file,
mex -setup % Select Visual Studio 2008 Express Edition
copyfile(fullfile(matlabroot,'extern','examples','mex','yprime.c'))
mex -v yprime.c
yprime(1,1:4)
The final line should execute the MEX-file, and calculate the following output:

ans =

      2.0000    8.9685    4.0000   -1.0947

The make error was eliminated :)

[Kaustubha Govind]

Do you mean the issue is resolved with the Embedded MATLAB Function as well?