i am simply running led program with arduino matlab interfacing using arduino mega 2560 but sum problem while generating code,plz get me out with this

### Generating code into build folder: C:\Windows\System32\leddemo_ert_rtw ### Invoking Target Language Compiler on leddemo.rtw ### Using System Target File: C:\Program Files\MATLAB\R2016b\rtw\c\ert\ert.tlc ### Loading TLC function libraries ...... ### Initial pass through model to cache user defined code . ### Caching model source code ............................ ### Writing header file leddemo.h ### Writing header file leddemo_types.h ### Writing source file leddemo.c ### Writing header file rtwtypes.h ### Writing header file multiword_types.h . ### Writing header file leddemo_private.h ### Writing source file leddemo_data.c ### Writing header file rtmodel.h ### Writing source file ert_main.c ### TLC code generation complete. ### Generating TLC interface API. ...... ### Creating data type transition file leddemo_dt.h ### Evaluating PostCodeGenCommand specified in the model ### Using toolchain: Arduino AVR v1.6.13 | gmake (64-bit Windows) ### 'C:\Windows\System32\leddemo_ert_rtw\leddemo.mk' is up to date ### Building 'leddemo': C:\PROGRA~1\MATLAB\R2016b\bin\win64\gmake -f leddemo.mk all gmake: leddemo.mk: No such file or directory gmake: * No rule to make target `leddemo.mk'. Stop. ### Creating HTML report file leddemo_codegen_rpt.html ### Build procedure for model: 'leddemo' aborted due to an error. Error(s) encountered while building "leddemo": ### Failed to generate all binary outputs.