MATLAB add-on recompile C file on Mac

Error:

Invalid MEX-file '/Users/jerry/Developer/MATLAB/IRL/Codes/irl_toolkit/Utilities/minFunc/lbfgsC.mexmaci64': dlopen(/Users/jerry/Developer/MATLAB/IRL/Codes/irl_toolkit/Utilities/minFunc/lbfgsC.mexmaci64, 0x0006): Library not loaded: @loader_path/libmex.dylib   Referenced from:   /Users/jerry/Developer/MATLAB/IRL/Codes/irl_toolkit/Utilities/minFunc/lbfgsC.mexmaci64   Reason: tried:   '/Users/jerry/Developer/MATLAB/IRL/Codes/irl_toolkit/Utilities/minFunc/libmex.dylib' (no such   file), '/usr/local/lib/libmex.dylib' (no such file), '/usr/lib/libmex.dylib' (no such file)  Error in minFunc (line 545)                     d = lbfgsC(-g,old_dirs,old_stps,Hdiag);  Error in maxentrun (line 91) [r,~] = minFunc(fun,r,options);  Error in runtest (line 59) irl_result = feval(strcat(algorithm,'run'),algorithm_params,mdp_data,mdp_model,...  Error in singletest1 (line 3) test_result = runtest('maxent',struct(),'linearmdp',... 

Solution:
At MATLAB Command Window type to revompile the c file to current macOS compatable x86 64 bit version: (not terminal)

otool -L lbfgsC.mexmaci64