I am trying to interface c2000 launchpad with matlab 2014 a but target prefernce block is not visible under embedded coder

Moreover if I am trying to build the code. Following error is coming.So could you please tell me that how to interface with simulink for ccsv 3.3.

ould not execute target data map file 'untitled_grt_rtw\untitled_targ_data_map' or it does not exist. Stop the target, delete the untitled executable, rebuild the code, and try again. Note that execution of external mode requires the build directory to be present