Unable to replace MINGWROOT with Microsoft SDK 7.1 for matlab compiler

I am using MATLAB 2015b. I have uninstalled MINGW compiler and successfully installed microsoft SDK 7.1 in windows 10 machine. When I run mex -setup I can see MS SDK7.1 and VS C++ 2010 being detected.

However when I try to build a simulink model with canoe interface, I get an error:

### Writing source file rtGetInf.c ### Writing header file rtGetNaN.h ### Writing source file rtGetNaN.c ### TLC code generation complete. . ### Processing Template Makefile: C:\Program Files\MATLAB\R2015b\rtw\c\canoe\cn_msdll.tmf ### sim_test.mk which is generated from C:\Program Files\MATLAB\R2015b\rtw\c\canoe\cn_msdll.tmf is up to date ### Building sim_test: .\\sim_test.bat

H:\Documents\canoe_simulink_intergration\sim_test_cn_rtw>set WINSDK_71A=

H:\Documents\canoe_simulink_intergration\sim_test_cn_rtw>cd .

H:\Documents\canoe_simulink_intergration\sim_test_cn_rtw>call "$MINGWROOT\VC\vcvarsall.bat" x86 The system cannot find the path specified.

At this point I am unable to find a solution. I appreciate any help!

Thanks in advance.

[Kevin Chng]

Have you select Microsoft SDK 7.1 as your compiler?

run

mex -setup c++

then click on the compiler you wanted.

refer to this link for more detail : https://www.mathworks.com/help/matlab/matlab_external/choose-c-or-c-compilers.html#responsive_offcanvas

[Suvrat Ramasubramanian]

Yes. I have. The compiler does get set to the one I want. However the batch file that is executed during the build still looks for the root folder of mingw compiler. I dont know how to change that or it is possible to do that.

[Ming Yue]

I have VS 2017 on my machine and I noticed that "vcvarsall.bat" is also under C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Auxiliary\Build. It seems that the batch file is looking for the same resource in mingw's root folder. Is there a way to point to your VS instead?

Also, in your Simulink model, you can open the "Model Configuration Parameters" -> "Code Generation". Please check in each subcategories to see if you selected the right compiler. Especially, check if MinGW is selected in the Toolchain settings.

[Suvrat Ramasubramanian]

So I had to delete the mingw object library in the matlab root folder : C:\Program Files\MATLAB\R2015b\extern, where the microsoft sdk library is also installed. Strangely, this did the job. Anyway, in my case I did not want to do anything with mingw so uninstalling it and deleting all the folder made way for microsoft batch file.