MATLAB: Do I get the error ‘specified module could not be found’ when using ‘loadlibrary’

headerloadlibraryMATLABmodulepath

When using MATLAB's "loadlibrary" function, I get the following error:

>> loadlibrary('example.dll', 'example.h');
There was an error loading the library "example.dll"
The specified module could not be found.

How do I resolve this issue?

Best Answer

This error can occur on Windows platforms when MATLAB successfully locates and compiles the header file but fails to locate the DLL file. One possible solution is to specify the absolute path to the DLL file so that MATLAB does not need to search for it:

>> loadlibrary('C:\Users\user\example\example.dll', 'example.h');

Related Solutions

MATLAB: Do I receive a “LINK : error LNK2001: unresolved external symbol mexFunction” error when I attempt to mex a C++ source file using MATLAB 7.8 (R2009a)

The error received is a linker error which indicates that the C++ source file that is being MEXed does not contain the MEX gateway function "mexFunction".

To create a MEX file using source code that is present in multiple source files, provide all the source files as input to the MEX function. For example, if you have the following source files:

 fileContaininingMEXGateway.cpp
 sourceFile1.cpp
 sourcefile2.cpp

the MEX command to be used to create a a MEX file is shown below:

mex -v fileContaininingMEXGateway.cpp sourceFile1.cpp sourcefile2.cpp

MATLAB: How to load multiple paths using ‘loadlibrary’

"loadlibrary" processes the input parameters individually, so arrays or wildcards will not work.

However, it may be possible to write a small script to process an array of pathnames and generate a "loadlibrary" command string that can be implemented with "eval".

Here's a simple example:

paths = genpath('\path\to\libraries');
pathArr = split(paths, ';');
includeStr = "loadlibrary('yourlib', 'yourlib.m'";
for i = 1:length(pathArr)
    includeStr = strcat(includeStr, ",'includepath','",pathArr(i),"'");
end
includeStr = strcat(includeStr, ");");
eval(includeStr);

The 'includeStr' should include all the paths we would like to input to 'loadlibrary' function and then, we can simply call it using 'eval'.

Best Answer

Related Solutions

MATLAB: Do I receive a “LINK : error LNK2001: unresolved external symbol mexFunction” error when I attempt to mex a C++ source file using MATLAB 7.8 (R2009a)

MATLAB: How to load multiple paths using ‘loadlibrary’

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