How to use matlab function in C++ program .

I want to use fuction [x,b]=eig(A)to calculate the eigenvectors and eigenvalues of matrix A in my C++ program.I try to definite a new function to change the interface of the function,such as: function [X]=eigen(A) %#External [X,b]=eig(A) end

then ,I want to mcc .m file to .cpp.I input mcc -m eigen.m eigen.cpp in matlab cmd.It works out the first time,but after I did some change in eigen.m and mcc again ,it comes out the error: D:\PROGRA~1\MATLAB\R2010B\BIN\MEX.PL: Error: eigen.cpp not found.How to solve it.*bold*

[kjetil87]

try

mcc -W cpplib:eigen -T link:lib eigen.m

[Ying Ren]

Thanks a lot!I have tried your answer,but comes another error: >> mcc -W cpplib:eigen -T link:lib eigen.m '"D:\Program Files\MATLAB\R2010b\bin\mbuild"' 不是内部或外部命令，也不是可运行的程序 或批处理文件。 Error: An error occurred while shelling out to mbuild (error code = 1). Unable to build executable (specify the -v option for more information). ??? Error using ==> mcc Error executing mcc, return status = 1 (0x1). Forgive me ,I'm a new learner of matlab.Thank you !

[kjetil87]

not sure what "不是内部或外部命令，也不是可运行的程序 或批处理文件" means, the code above works fine for on my pc.

otherwise maybe you should try

deploytool

give it a name, dropdown type to c++ shared lib and press ok. Drag the .m file you want into the "Main File" section and press deploy. (should be same as the code above though)

[kjetil87]

might also be some compiler issue? does mbuild -setup give you a valid choice of compiler?

[Ying Ren]

both mex -setup and mbuild -setup have done.But the results are all the same.The version of matlab I use is matlab2010b.I don't know whether it has some difference compared to before.I tried deploytool,but cant find Main File section.

[kjetil87]

http://www.youtube.com/watch?v=FfPM1Plf4dQ,

it is simply under "Build" and "Main File" : Add main function file (programs entry point )

[Ying Ren]

I think the problem is:matlab install incorrectly.This is the Chinese link for how to install matlab2012b http://www.doc88.com/p-0364732349155.html