cmake findMatlab - location of matlabConfig.cmake or matlab-config.cmake in the MATLAB installation directory

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SHRAVAN GARLAPATI
SHRAVAN GARLAPATI 2025-3-21
回答： Maneet Kaur Bagga 2025-4-4
I am trying to integrate an external C++ function (large package) into a mex function. I have written a cmake file, which generates library for external C++ function and I am using matlab_add_mex to generate the mex-file.
# Find MATLAB
set(Matlab_ROOT_DIR "../mathworks/2023b/bin/")
find_package(Matlab REQUIRED)
# Add a MEX target
matlab_add_mex(
NAME my_mex_function
SRC my_mex_function.cpp
LINK_TO my_library
)
find_package(Matlab REQUIRED) - gives following error:
CMake Error at CMakeLists.txt: (find_package):
By not providing "Findmatlab.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "matlab", but CMake did not find one.
Could not find a package configuration file provided by "matlab" with any of the following names:
matlabConfig.cmake
matlab-config.cmake
Add the installation prefix of "matlab" to CMAKE_PREFIX_PATH or set "matlab_DIR" to a directory containing one of the above files. If "matlab" provides a separate development package or SDK, be sure it has been installed.
I searched for matlabConfig.cmake or matlab-config.cmake in matlab installation directory but did not find it. Does Matlab provide provide such files or not? If not how to integrate large C++ programs with MATLAB. I dont want to use system function calls as they are too slow.

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回答（1 个）

Maneet Kaur Bagga
Hi,
As per my understanding, your error is because "matlabConfig.cmake" file is not provided by MATLAB. The possible workaround for the same is as follows:
Write a MEX function in C++ that interfaces with your shared library. This wrapper will handle data conversion between MATLAB and C++ and manage calls to your library functions. Please refer to the following MathWorks documentation for better understanding.
https://in.mathworks.com/help/matlab/cpp-mex-file-applications.html
Alternatively, MATLAB provides a C++ interface that allows you to call functions in a C++ shared library directly from MATLAB. This method involves creating an interface to the library using MATLAB's "clibgen" functionality. Following is the documentation for the same.
https://in.mathworks.com/help/matlab/call-cpp-library-functions.html
Hope this helps!

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