Run mex files with error: undefined function 'mxGetEdges' for input arguments of type 'uint8'

Run mex files with error: undefined function 'mxGetEdges' for input
arguments of type 'uint8'

I am now trying to run a mex file and I have encountered an error says
undefined function 'mxGetEdges' for input arguments of type 'uint8'
The files have been successfully compiled so there is a .mexa64 file with
the same name as the function 'mxGetEdges.mexglx.mexa64'.
Besides, there should be no problem with the code because I download the
code from a credible source.
BTW, I am using gcc 4.4.2, matlab R2012a, and Red Hat Enterprise Linux
Server release 5.9.
I searched several questions here about similar errors. But they all
mentioned it was because the file was not compiled.
But in my case, the files have been successfully compiled.
Are there any other possible reasons can cause this problem?
Sorry I am not quite familiar with MEX. Could anyone help me? Thanks a lot.