The "deep network quantizer" APP has problem with C++ MEX compiler

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Tao Huang 2023-6-15

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https://ww2.mathworks.cn/matlabcentral/answers/1983239-the-deep-network-quantizer-app-has-problem-with-c-mex-compiler

评论： Dhananjay Kumar 2023-7-18

I am using the "deep network quantizer" APP but it says my C++ MEX compiler is not supported. I look up at Quantization Workflow Prerequisites - MATLAB & Simulink - MathWorks 中国 and see "On Windows®, the MinGW C/C++ compiler is not supported. Use Microsoft Visual C++ 2019, Microsoft Visual C++ 2017, or Microsoft Visual C++ 2015." So I configure the Visual C++ 2019. It looks like the configuration is successful. But it still says my C++ MEX compiler is not supported. Could anybody help? Thanks.

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Dhananjay Kumar 2023-7-17

编辑：Dhananjay Kumar 2023-7-17

Hi Tao, were you able to resolve this issue ?

As far as I understand mex -setup command successfully selected a default compiler which is not MinGW but you are still getting the unsupported compiler error ?

Tao Huang 2023-7-17

Hello! I haven't solve it yet. The "deep network quantizer" APP still says compiler is not supported.

Should I uninstall the MinGW and keep Visual C++ only?

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Answer 1

Ranjeet 2023-6-26

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Hi Tao,

The error message in the image attached clearly show that the selected C++ compiler is “MinGW64”. As you state that you have installed/configured Visual C++ 2019, “MinGW64” might still be configured as the C++ compiler.

You may check what compiler is configured by the following command –

mex -setup cpp

It should show the following output –

MEX configured to use 'Microsoft Visual C++ 2019' for C++ language compilation. 
To choose a different C++ compiler, select one from the following: 
MinGW64 Compiler (C++)  mex -setup:'C:\Program Files\MATLAB\R2022b\bin\win64\mexopts\mingw64_g++.xml' C++ 
MinGW64 Compiler with Windows 10 SDK or later (C++)  mex -setup:'C:\Program Files\MATLAB\R2022b\bin\win64\mexopts\mingw64_g++_sdk10+.xml' C++ 
Microsoft Visual C++ 2019  mex -setup:C:\Users\ranjeetk\AppData\Roaming\MathWorks\MATLAB\R2022b\mex_C++_win64.xml C++ 

You can use the following resource on how to setup a particular compiler for C++

Choose a C++ Compiler

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Tao Huang 2023-6-28

Thanks for your answer! But I have already use "mex -setup cpp" to configure Visual C++ 2019 as c++ compiler and it seems successful because it says "MEX configured to use 'Microsoft Visual C++ 2019' for C++ language compilation. ".

Could you think about other reasons why I meet this problem? Maybe I think it is the problem of the app "deep network quantizer".

Dhananjay Kumar 2023-7-18

As the issue seems complicated, I think you can create a service request by attaching step wise reproduction steps and relevant files here : https://www.mathworks.com/support/contact_us.html

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