how to solve the error: You have to run compiler_mex before.

I'm working on a project where i need to use perform_fast_marching-mesh. However i get this error:

Error using perform_fast_marching_mesh (line 66)

You have to run compiler_mex before.

But when i put mex - setup, it doesn't seem like the mex compiler has a problem, it says:

MEX configured to use 'MinGW64 Compiler (C)' for C language compilation.

Warning: The MATLAB C and Fortran API has changed to support MATLAB

variables with more than 2^32-1 elements. You will be required

to update your code to utilize the new API.

You can find more information about this at:

https://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html.

To choose a different C compiler, select one from the following:

MinGW64 Compiler (C) mex -setup:'C:\Users\Amal Fh\AppData\Roaming\MathWorks\MATLAB\R2018b\mex_C_win64.xml' C

Microsoft Visual C++ 2017 (C) mex -setup:'C:\Program Files\MATLAB\R2018b\bin\win64\mexopts\msvc2017.xml' C

To choose a different language, select one from the following:

mex -setup C++

mex -setup FORTRAN

I don't understand why i get the first error. Can someone help me please.

Answer 1

[Walter Roberson]

That package needs C++ so you need to

mex -setup C++

[Amal FH]

I did that but I still get the same error. I dont know why everything is correct in my code.

[Walter Roberson]

Give the MATLAB command

compile_mex

not compiler_mex like the error message says.

[Amal FH]

That's a comment actually, this is the code:

% use fast C-coded version if possible

if exist('perform_front_propagation_2d')~=0

[D,S,Q] = perform_front_propagation_mesh(vertex, faces-1, W,start_points-1,end_points-1, nb_iter_max, H, L, values, dmax);

Q = Q+1;

else

error('You have to run compiler_mex before.');

end

[Walter Roberson]

You got told

Error using perform_fast_marching_mesh (line 66)
You have to run compiler_mex before.
                ^^^^^^^^^^^^

That is telling you that before you use the code, you need to (once) give the command

compiler_mex

However, my investigation in the source code shows that instead what you need is to give the command

compile_mex

Answer 2

[Ana Miguelez Martinez]

Hello!

I have the same problem and the same code.

Don't found compile_mex, the answer for the comand is "Unrecognized function or variable 'compile_mex'.

Thanks!!