Error using mex No supported compiler was found.

Hello

My matlab version is R2019b. I have visual studio 2017 with intel oneAPI 2021 installed. However, when I type the following, I get error:

Any guidance, especially from MatLab staff is highly appreciated as otherwise I have to code the program on my own in MatLab.

mex -setup FORTRAN
Error using mex
No supported compiler was found. For options, visit https://www.mathworks.com/support/compilers.
 

Answer 1

[Bruno Luong]

These threads might be useful for you

https://www.mathworks.com/matlabcentral/answers/864430-compiler-support-for-intel-oneapi-toolkits-fortran?s_tid=srchtitle

https://www.mathworks.com/matlabcentral/answers/678588-mex-how-to-modify-xml-file-for-unsupported-compiler?s_tid=srchtitle

[Pooneh Shah Malekpoor]

Hi. I read both of these threads before posting my query. I need a more exact response as my problem still exist.

[Bruno Luong]

Of course, because the compiler is not supported in R2019b. You have to modify the xml file to make it works, and you won't get help from TMW since the compiler is not supported. I have done for C intel openAPI, it should be doable for fortran too.

BTW it seems R2021b supports intel fortran 18 to 21. I can't provide you the xml file, since it is copyright config file.

[Pooneh Shah Malekpoor]

is there any Matlab version compatible to fortran compiler in oneAPI?

[Pooneh Shah Malekpoor]

I mean which combination of matlab version+fortran compiler+ visual studio work?

[Bruno Luong]

Both questons are answered here : Support compilers for R2019b

https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/system-requirements-release-2019b-supported-compilers.pdf

Anotherway is to see the list of xml ci=onfiguration files (here is for R2021b)

>> cd([matlabroot '\bin\win64\mexopts'])
>> ls

.                            intel_c_20_vs2017.xml        intel_cpp_19_vs2019.xml      intel_fortran_19_vs2017.xml  msvc2015.xml                 
..                           intel_c_20_vs2019.xml        intel_cpp_20_vs2017.xml      intel_fortran_19_vs2019.xml  msvc2017.xml                 
compilerComponents           intel_c_21_vs2017.xml        intel_cpp_20_vs2019.xml      intel_fortran_20_vs2017.xml  msvc2019.xml                 
intel_c_18_vs2015.xml        intel_c_21_vs2019.xml        intel_cpp_21_vs2017.xml      intel_fortran_20_vs2019.xml  msvcpp2015.xml               
intel_c_18_vs2017.xml        intel_cpp_18_vs2015.xml      intel_cpp_21_vs2019.xml      intel_fortran_21_vs2017.xml  msvcpp2017.xml               
intel_c_18_vs2019.xml        intel_cpp_18_vs2017.xml      intel_fortran_18_vs2015.xml  intel_fortran_21_vs2019.xml  msvcpp2019.xml               
intel_c_19_vs2015.xml        intel_cpp_18_vs2019.xml      intel_fortran_18_vs2017.xml  mingw64.xml                  
intel_c_19_vs2017.xml        intel_cpp_19_vs2015.xml      intel_fortran_18_vs2019.xml  mingw64_g++.xml              
intel_c_19_vs2019.xml        intel_cpp_19_vs2017.xml      intel_fortran_19_vs2015.xml  mingw64_g++_sdk10+.xml       

[Pooneh Shah Malekpoor]

Thanks for your reply.

I saw that link before, thats why I downloaded VS2017 to be compatible to Matlab R2019b. So, the only issue is making the compiler support R2019b. However, I do not know how should I edit the xml file?

it is the list of compiler components in my R2019b, which shows intel fortran 17,18,19 are supported in R2019b. Could you please tell me how should I edit this? what is the guidance to edit xml file?

>> cd([matlabroot '\bin\win64\mexopts'])
>> ls

.                            intel_c_18_vs2019.xml        intel_cpp_18_vs2017.xml      intel_fortran_18_vs2015.xml  mingw64_g++_sdk10+.xml       
..                           intel_c_19_vs2015.xml        intel_cpp_18_vs2019.xml      intel_fortran_18_vs2017.xml  msvc2015.xml                 
compilerComponents           intel_c_19_vs2017.xml        intel_cpp_19_vs2015.xml      intel_fortran_18_vs2019.xml  msvc2017.xml                 
intel_c_17_vs2015.xml        intel_c_19_vs2019.xml        intel_cpp_19_vs2017.xml      intel_fortran_19_vs2015.xml  msvc2019.xml                 
intel_c_17_vs2017.xml        intel_cpp_17_vs2015.xml      intel_cpp_19_vs2019.xml      intel_fortran_19_vs2017.xml  msvcpp2015.xml               
intel_c_17_vs2019.xml        intel_cpp_17_vs2017.xml      intel_fortran_17_vs2015.xml  intel_fortran_19_vs2019.xml  msvcpp2017.xml               
intel_c_18_vs2015.xml        intel_cpp_17_vs2019.xml      intel_fortran_17_vs2017.xml  mingw64.xml                  msvcpp2019.xml               
intel_c_18_vs2017.xml        intel_cpp_18_vs2015.xml      intel_fortran_17_vs2019.xml  mingw64_g++.xml              

[Bruno Luong]

But I already post the instructions from the links in my answer. In your case you need to change the

<FORTRANROOT>
...
<and>
<or>
<envVarExists name="IFORT_COMPILER21" />
</or>
<fileExists name="$$/Bin/intel64/ifort.exe" />
<dirExists name="$$/../.." />
</and>
...
<and>
<or>
<envVarExists name="ONEAPI_ROOT" />
</or>
<fileExists name="$$/compiler/2021.1.1/windows/Bin/intel64/ifort.exe" />
<dirExists name="$$/../.." />
</and>

instead of <CROOT>. More instructions in this link.

You doesn't seem to read the answer I gave you.

[Pooneh Shah Malekpoor]

Thanks. I editted the xml file according to your guidance and named it intel_one_classical_fortran_vs2017.xml . then Could you please tell me why am I getting this error?

<locationFinder>
	    <FORTRANROOT>
            <and>
                <or>
                    <envVarExists name="ONEAPI_ROOT" />
                </or>
                <fileExists name="$$/bin/intel64/ifort.exe" />
                <dirExists name="$$/../.." />
        </and>
        
cd(fullfile(matlabroot,'bin','win64','mexopts'));
>> setenv('ONEAPI_ROOT', 'C:\Program Files (x86)\Intel\oneAPI\compiler\2021.4.0\windows\bin\intel64\');
>> mex -setup:intel_one_classical_fortran_vs2017.xml -v
Verbose mode is on.
... Looking for compiler 'Intel oneAPI Fortran compiler with Microsoft Visual Studio 2017' ...
... Looking for environment variable 'ONEAPI_ROOT' ...Yes ('C:\Program Files (x86)\Intel\oneAPI\compiler\2021.4.0\windows\bin\intel64\').
... Looking for file 'C:\Program Files (x86)\Intel\oneAPI\compiler\2021.4.0\windows\bin\intel64\bin\intel64\ifort.exe' ...No.
Did not find installed compiler 'Intel oneAPI Fortran compiler with Microsoft Visual Studio 2017'.
Error using mex
MEX cannot use compiler 'Intel oneAPI Fortran compiler with Microsoft Visual Studio 2017' because that compiler is not found.
 

[Bruno Luong]

"Looking for file 'C:\Program Files (x86)\Intel\oneAPI\compiler\2021.4.0\windows\bin\intel64\bin\intel64\ifort.exe' ...No."

You have to check where is the intel fortran compiler is installed on your system and adapt accordingly.

I don't have access to your system or never work with intel fortran, you have to figure out on your own.

[Pooneh Shah Malekpoor]

I did!

Thank you!