How to fix the external link error while using mex?

LINK : error LNK2001: unresolved external symbol mexFunction C:\Users\...\AppData\Local\Temp\mex_eBKGmV\templib.x : fatal error LNK1120: 1 unresolved externals

C:\PROGRA~1\MATLAB\R2012A\BIN\MEX.PL: Error: Link of 'hello.mexw64' failed.

Answer 1

[James Tursa]

You need to have the gateway function mexFunction in your source code. See this link and the examples listed there:

http://www.mathworks.com/help/matlab/apiref/mexfunction.html?searchHighlight=mexfunction

Once you have that set up properly, and the file is in the current directory, then all you do is enter this at the command prompt:

mex source_file_name.cpp