fatal error in integration of MATLAB code and C/C++

Question

I used a sample code from mathworks website to integrate a MATLAB code with C/C++ by a link!

As you seen in the code, there is header file as: #include "engine.h"

In Linux (Ubuntu), I ran: g++ engdemo.cpp -o mycpp command to create an executable program, but the below fatal error occurred:

engdemo.cpp:14:20: fatal error: engine.h: No such file or directory, compilation terminated.

How can i solve this fatal error?

@BlueBit: you need to tell the compiler where to find the header files. You also need to link against the required libraries. The documentation explains this: mathworks.com/help/matlab/matlab_external/… , mathworks.com/support/solutions/en/data/1-1BSZR — Amro
– Amro, Commented Jun 6, 2013 at 12:25

Rody Oldenhuis · Accepted Answer · 2013-06-06 09:57:59Z

2

Look in

[matlabroot '/extern/include']

If you see engine.h there, just run

g++ -I../../include engdemo.cpp -o mycpp

(assuming you run from [matlabroot '/extern/examples/eng_mat/'])

answered Jun 6, 2013 at 9:57

Rody Oldenhuis

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BlueBit Over a year ago

There is an error when run: g++ -I /usr/local/MATLAB/R2011b/extern/include engdemo.cpp -o mycpp : /tmp/ccNSRT82.o: In function main': engdemo.cpp:(.text+0x4c): undefined reference to engOpen' engdemo.cpp:(.text+0xa7): undefined reference to mxCreateDoubleMatrix' engdemo.cpp:(.text+0xb7): undefined reference to mxGetPr' engdemo.cpp:(.text+0x141): undefined reference to engPutVariable' engdemo.cpp:(.text+0x155): undefined reference to engEvalString' engdemo.cpp:(.text+0x169): undefined reference to engEvalString' engdemo.cpp:(.text+0x17d): undefined reference to engEvalString' ...

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