MATLAB: Are DEF-files for MEX libraries not supplied in MATLAB 7.4 (R2007a)

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In previous versions of MATLAB, I had used the DEF-files for the MEX libraries to supply symbol names for my custom MEX-file build procedure. These files included:
$MATLABROOT\extern\include\libmex.def
$MATLABROOT\extern\include\libmat.def
$MATLABROOT\extern\include\libmx.def
where $MATLABROOT is the MATLAB installation directory, as returned by executing
matlabroot
at the MATLAB Command Prompt.

Best Answer

The ability to use pre-generated DEF-files for the MEX libraries is not available in MATLAB 7.4 (R2007a).
To work around this issue, you can use a supported compiler listed here; these do not require DEF files:
https://www.mathworks.com/support/requirements/supported-compilers.html
Alternatively, you may be able to extract symbols from the DLL-files using a tool from your compiler.
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