compiling CPP file in Matlab

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MD NASAR
MD NASAR 2012-12-27
Dear All,
I am trying to compile CPP file in Matlab the following error comes when we run CPP file
>> mex crossover.cpp
Command line warning D4002 : ignoring unknown option '-Oy-'
Microsoft (R) Incremental Linker Version 6.00.8168
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.
C:\Users\Nasar\AppData\Local\Temp\mex_3EF2C05A-E50F-47E4-CD92-86944314E3FC\crossover.obj
LINK : error LNK2001: unresolved external symbol mexFunction
C:\Users\Nasar\AppData\Local\Temp\mex_3EF2C05A-E50F-47E4-CD92-86944314E3FC\templib.x : fatal error LNK1120: 1 unresolved externals
LINK : fatal error LNK1141: failure during build of exports file
C:\PROGRA~1\MATLAB\R2007A\BIN\MEX.PL: Error: Link of 'crossover.mexw32' failed.
??? Error using ==> mex at 206
Unable to complete successfully.
we set the compiler through mex -setup command
please resolve the problem.
Thanks

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回答（1 个）

Walter Roberson
Walter Roberson 2012-12-27
Does your crossover.cpp file have
extern "C" {
DATATYPE mexFunction (ARGUMENTS) {
......
}
}
except with a datatype where DATATYPE is indicated, "mexFunction" and actual arguments where ARGUMENTS is indicated?
If your mexFunction is not within an extern "C" then it will not be accessible to MATLAB.

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