mex function : fatal error LNK1120: 1 unresolved externals

I need to compile a fortran file (myfortranfile.for) using the mex function. As i learned the fortran file must be in .f so i just renamed my file to .f instead of .for. Can someone help? After running the mex function it didn't work , showing the above:

>> matlab_MB_New

Building with 'Intel oneAPI 2023 for Fortran with Microsoft Visual Studio 2022'.

C:\Users\...\ ..\myfortranfile.f(528): remark #8291: Recommended relationship between field width 'W' and the number of fractional digits 'D' in this edit descriptor is 'W>=D+7'.

102 FORMAT (1X,I3,1X,F9.3,1x,4(E9.3,1X),4(E11.5,1X),3(E11.5,1X))

----------------------------------^

C:\Users\..\myfortranfile.f(528): remark #8291: Recommended relationship between field width 'W' and the number of fractional digits 'D' in this edit descriptor is 'W>=D+7'.

102 FORMAT (1X,I3,1X,F9.3,1x,4(E9.3,1X),4(E11.5,1X),3(E11.5,1X))

---------------------------------------------^

C:\Users\...\myfortranfile.f(528): remark #8291: Recommended relationship between field width 'W' and the number of fractional digits 'D' in this edit descriptor is 'W>=D+7'.

102 FORMAT (1X,I3,1X,F9.3,1x,4(E9.3,1X),4(E11.5,1X),3(E11.5,1X))

---------------------------------------------------------^

Error using mex

LINK : error LNK2001: unresolved external symbol MEXFUNCTION

myfortranfile.lib : fatal error LNK1120: 1 unresolved externals

Error in matlab_MB_New (line 5)

mex myfortranfile.f

[James Tursa]

We need to see your source code. Do you have a subroutine mexfunction?

[Markela Bargiampa]

no my fortran file doesn't have a subroutine mexfuntion. It's an old fortran code, do I have to add it?

[James Tursa]

Yes, you have to add it. The subroutine mexfunction is the interface between your Fortran code and MATLAB. It would help if you posted the code, or at least described what the code does and what the inputs & outputs are. E.g., why are you trying to connect it with MATLAB?

Answer 1

[MYBLOG]

Use command

mex myfortranfile.f -compatibleArrayDims -output myfortranfunction

[Markela Bargiampa]

didn't work. what is myfortranfunction??