MATLAB: Undefined symbole ‘_mclInitializeApplication_proxy@8’ reference in .c

cviMATLAB Runtime Servermclmcrrt

hello,

I want to integrate a dll compiled with matlab in a labwindowsCVI project. i have installed matlab runtime r2012b on my pc and add the dll library, mclmcrrt.lib and paths of .h files to the project. I have also included paths « C:\Program Files\MATLAB\MATLAB Compiler Runtime\v80\extern\include » and « C:\Program Files\MATLAB\MATLAB Compiler Runtime\v80\extern\lib\win32\microsoft » to the project.

when compile the project i got this project link error: undefined symbole '_mclInitializeApplication_proxy@8' reference in .c

in mclmcrrt.h i found this #undef mclInitializeApplication #define mclInitializeApplication mclInitializeApplication_proxy

i do include mclmcrrt.h in file .c, could anyone help me with this problem?

Best Answer

Hi,

specifying the path to the lib file is not enough. You need to explcitly state the mclmcrrt.lib for the linker and also the .lib file generated by MATLAB Compiler. There should be a project setting for the linker in which you can specify additional dependencies/libraries. Not sure how it is named in labview.

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MATLAB: Using MCR in C++ project: undefined reference to `mclInitializeComponentInstanceWithEmbeddedCTF_proxy’

According to this solution, you may be linking against the wrong version of mclmcrrt.lib. You appear to be linking against the library corresponding to R2012a, but you need to get the one corresponding to the version of the MATLAB that you library was compiled with.

MATLAB: Do I receive a linking error about mclInitializeApplication_proxy and mclmcrInitialize_proxy when I compile the driver application that calls a C++ shared library compiled using MATLAB Compiler 4.10 (R2009a)

This error may occur only with MATLAB Compiler 4.8 (R2008a) or later versions because of changes that have been introduced in mclmcrrt.h and mclmcr.h, which impose the requirement that mclmcr.h always be included after mclmcrrt.h for the pre-processing stage.

In the attached driver application, the following code is found on Lines 1-2:

#include "mclcppclass.h"
#include "Test.h"

Here, mclcppclass.h (found in the <matlabroot>/extern/include directory) in turn includes mclmcr.h.

Also, in the generated Test.h file, the following code can be found:

#include "mclmcrrt.h"
#include "mclcppclass.h"

This results in mclcppclass.h being included before mclmcrrt.h, thus causing a symbol resolution issue for the identifiers mclInitializeApplication_proxy and mclmcrInitialize_proxy.

In order to resolve this issue, change the order of the header files in mydriver.cpp to the following:

#include "Test.h"
#include "mclcppclass.h"

Also, since Test.h already includes mclcppclass.h, you can entirely avoid including this header file in your driver application.

Best Answer

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