If I only have MATLAB Runtime, e.g 2024a, can i run mbuild in a compiled cpp file using either the C++ Data Array or mwArray APIs,which generated by C++ Shared Library

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Lili Wei 2024-6-27，7:22

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https://ww2.mathworks.cn/matlabcentral/answers/2132461-if-i-only-have-matlab-runtime-e-g-2024a-can-i-run-mbuild-in-a-compiled-cpp-file-using-either-the

评论： Lili Wei 2024-7-10，18:59

I want to use the program supported by C++ shared libraries created by The Library Compiler in MATLAB® Compiler SDK™. But I have problem on configuration.

The MATLAB code was compiled using the 2024a MATLAB® .

I've tried installing only runtime 2024a and the needed compiler MinGW 8.1, along with the Windows SDK, but I still can't run the .cpp file, either using the C++ Data Array or mwArray APIs.

I've also already set up the environment variable for the compiler.

Only I installed the MATLAB 2024a, I can succeed in configuration.

What I did is the following in the command window:

mbuild -setup

It shows that MBUILD is configured to use 'MinGW64 Compiler(C)' to compile C files.

And I can choose the following command to compile another language.

mex -setup C++ -client MBUILD

After that, there are two compilers available.

For MinGW64 Compiler (C++):  mex -setup:"C:\Program Files\MATLAB\R2024a\bin\win64\mexopts\mingw64_g++.xml" C++ -client MBUILD
For MinGW64 Compiler with Windows 10 SDK or later (C++):  mex -setup:C:\Users\12146\AppData\Roaming\MathWorks\MATLAB\R2024a\MBUILD_C++_win64.xml C++ -client MBUILD

If MinGW64 Compiler (C++) is set, the generation of both .exe for the .cpp using C++ Data Array and mwArray APIs can work.

However, if MinGW64 Compiler with Windows 10 SDK or later (C++) is set, only the .exe file using mwArray APIs works.

That's strange, i don't know why it's that.

What I really want to ask is:

Is there a file in MATLAB Runtime similar to mingw64_g++.xml?

Or can I the modify the mingw64_g++.xml, in order to link to the runtime?

<env
 PATH = "$MINGWROOT\bin;$MATLABROOT\extern\include\$ARCH;$MATLABROOT\extern\include;$MATLABROOT\simulink\include;$MATLABROOT\lib\$ARCH"

Then I can use mbuild the .cpp file only supported by MATLAB Runtime?

Thank you!

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Answer 1

Pratyush 2024-7-9，8:49

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Hi Lili,

You are facing issues configuring MinGW to work with MATLAB Runtime for compiling C++ files using MATLAB Compiler SDK. Here’s a summary of the steps to resolve this:

Verify that MATLAB Runtime 2024a is installed.

Modify mingw64_g++.xml:

- Update the XML file to include paths to MATLAB Runtime libraries and headers.

Set Environment Variables:

- Ensure environment variables point to MATLAB and MATLAB Runtime.

set MATLABROOT=C:\Program Files\MATLAB\R2024a

set MATLABRUNTIME=C:\Path\To\MATLAB\Runtime\R2024a

set PATH=%MATLABROOT%\bin\win64;%MATLABRUNTIME%\bin\win64;%PATH%

Compile Using mbuild:

- Use 'mbuild' and 'mex' to set up and compile.

mbuild -setup

mex -setup C++ -client MBUILD

mbuild yourfile.cpp

- Ensure compatibility between MinGW, MATLAB, and MATLAB Runtime versions.

- Verify all dependencies and libraries are accessible.

- Check for necessary permissions.

Hope this helps.

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Lili Wei 2024-7-10，18:59

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Hello Pratyush,

thanks a lot for summary.

What confuses me is that for C++ generated via the MATLAB Compiler SDK according to the official website,(see hier: compiler sdk) MATLAB is not required.

I have modified mingw64_g++.xml:

I made a copy of this .xml files and replaced the MATLABROOT with MATLABRUNTIME.
The copy was moved to a similar MATLAB RUNTIME %MATLABRUNTIME%\bin\win64\mexopts\.
The mexopts folder doesn't exist in the MATLAB Runtime 2024a folder as it does in MATLAB 2024a. therefore i created manual one.

But the following command can't also find the compiler, also the modified mingw64_g++.xml copy, which located at folder %MATLABRUNTIME%\bin\win64\mexopts.

mex -setup C++ -client MBUILD

After running that, I got the same output as before.

Maybe there is a missing link in the middle for mex -setup C++ -client MBUILD to find available Matlab compilers？From which files does the mex command find available MATLAB compilers? Maybe this is key to solve the problem?

PS.

Also, on a target computer, i installed MATLAB und MATLAB Runtime, if i chose the compiler,e.g following one. I was able to successfully compile and run.

For MinGW64 Compiler (C++):  mex -setup:"C:\Program Files\MATLAB\R2024a\bin\win64\mexopts\mingw64_g++.xml" C++ -client MBUILD

But according to the official website, i don't need the MATLAB. If on a target computer, which i only installed MATLAB RUNTIME, i can't find the compiler to compile.

mex -setup C++ -client MBUILD

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