Compiling a C/C++ function with external dependencies

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Ryan
Ryan 2015-9-1
回答： Rutuja Shirali 2015-9-3
There is a cross-platform library called LCM, the lightweight communication and marshaling protocol, which provides some cool interprocess communication capabilities. I have C functions that can publish and subscribe to LCM channels. I want to get these functions into a Simulink block so that I can communicate with a running model from other processes. These functions, of course, have a dependency on the LCM library. I can compile this program in my C IDE with a cmakelists file - what is the most straightforward way to compile this program for Matlab?

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Rutuja Shirali
Rutuja Shirali 2015-9-3
Hi Ryan,
We can accomplish calling C/C++ code from MATLAB in the following ways:
  • We can directly call C library finctions from MATLAB by loading the library using the "loadlibrary" function and calling functions from the library using "calllib" function. More information about this can be found here:
http://www.mathworks.com/help/releases/R2015a/matlab/using-c-shared-library-functions-in-matlab-.html
  • Moreover, we can write a MEX-file to call C/C++ functions and then build it. While building we can use the "-L" and "-l" flags to specify external libraries. More information about MEX-file creation and the "mex" function can be found here:
http://www.mathworks.com/help/releases/R2015a/matlab/write-cc-mex-files.html
http://www.mathworks.com/help/matlab/ref/mex.html
I hope this helps with your issue. If this is not what you are expecting I would suggest contacting MathWorks Technical Support with more clarification on your workflow.
Thanks!
Rutuja

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