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I am using MatConvNet with the Microsoft Visual C/C++ 2015 compiler. It was installed and it worked. However, when I run mex -setup I get the error message No supported compiler or SDK was found. MatConvNet still works and the compiler file is clearly in C:\Program Files\MATLAB\R2017b\bin\win64\mexopts so why do I get that error message?

jlhw
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2 Answers2

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Call:

  mex -v -setup

Then look in the details, why your compiler was not found.

In my case e.g. it was because the registry variable:

HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VS7

was set to

C:\Program Files (x86)\Microsoft Visual Studio\2017\TestPro

instead of

C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\

Schlacki
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You seem to be using MATLAB R2017b. The list of supported compilers states that R2017b supports MS Visual C++ 2015 professional, so I'm guessing, you're using the community edition.

In that case, the easiest way forward is to get your hands on Visual C++ 2017, making sure that MatConvNet also works there.

Rody Oldenhuis
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  • Thanks, @Rody Oldenhuis. Just to be clear, MatConvNet installed and compiled perfectly fine a few days ago and mex -setup showed that Visual C++ 2015 was the selected compiler. I'm just curious because now it says that there is no compiler found, when I didn't change anything on my computer. – jlhw Dec 12 '17 at 22:51
  • @jlhw computers are deterministic, *something* must have changed. We unfortunately have no access to your machine, so its going to be hard to help. – Ander Biguri Dec 04 '18 at 16:19