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No supported compiler was found.

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Upon trying to compile a file using mex, I receive the following error message:
Error using mex
No supported compiler was found.
I installed Visual Studio 2017 with support for C++ and actually
mex -setup C++
lets me choose my compiler.
Which additional diagnostics could I run in order to pin down the problem?

  3 Comments

Walter Roberson
Walter Roberson on 8 Apr 2019
Perhaps you need to mex -setup C
Nicolas Bourbaki
Nicolas Bourbaki on 21 Jul 2019
I finally realized that Visual Studio comes without an installed compiler.
After installing Visual Studio, it is necessary to install a compiler in addition.
Therefore, this is not really a MATLAB problem, but as mentioned below, running
mex -v -setup
proved to be very helpful in pinning down the problem.
Walter Roberson
Walter Roberson on 21 Jul 2019
Visual Studio installs one compiler by default but not another one by default. Unfortunately at the moment I do not recall which is the default. It can sometimes be necessary to go back and ask visual studio to install more components.

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Accepted Answer

Matt J
Matt J on 8 Apr 2019
If you just run
>> mex -setup
it should present you with the compilers that Matlab can actually see. That should provide a clue.

  1 Comment

Walter Roberson
Walter Roberson on 8 Apr 2019
mex -v -setup
can help diagonse problems.

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