Building error with the message of 'Simulink' is not recognized as an internal or external comman

Hello,

I tried to SIL simulation with the demo file of 'rtwdemo_sil_block' on MATLAB 2012b. I just followed the documentation, 'Software and Processor in the loop (SIL and PIL) Simulation. Whenever I try to build subsystem I encounter the error message like below. I think I set up the MEX properly. Could you let me know how to solve the issue?

Thanks in advance for your help.

### Starting build procedure for model: Controller C:/PROGRA~2/MATLAB/R2012b\sys\lcc\bin\lcc -c -FoController.obj -DMODEL=Controller -DNUMST=1 -DNCSTATES=0 -DMAT_FILE=0 -DINTEGER_CODE=0 -DONESTEPFCN=1 -DTERMFCN=0 -DHAVESTDIO -DMULTI_INSTANCE_CODE=0 -DCLASSIC_INTERFACE=0 -DMT=0 -DPORTABLE_WORDSIZES -I. -I.. -IC:/PROGRA~2/MATLAB/R2012b\simulink\include -IC:/PROGRA~2/MATLAB/R2012b\extern\include -IC:/PROGRA~2/MATLAB/R2012b\rtw\c\src -IC:/PROGRA~2/MATLAB/R2012b\rtw\c\libsrc -IC:/PROGRA~2/MATLAB/R2012b\rtw\c\src\ext_mode\common -IC:/PROGRA~2/MATLAB/R2012b\rtw\c\src\ext_mode\tcpip -IC:/PROGRA~2/MATLAB/R2012b\rtw\c\src\ext_mode\serial -IC:/PROGRA~2/MATLAB/R2012b\rtw\c\src\ext_mode\custom -ID:/05_Power_Plant_For_Training/00_MATLAB&Simulink/Controller_ert_rtw -ID:/05_Power_Plant_For_Training/00_MATLAB&Simulink -IC:/PROGRA~2/MATLAB/R2012b\sys\lcc\include -I../slprj/ert/_sharedutils -w -noregistrylookup Controller.c lcc preprocessor fatal: Can't open input file -c 'Simulink' is not recognized as an internal or external command, operable program or batch file. 'Simulink' is not recognized as an internal or external command, operable program or batch file. gmake: * [Controller.obj] Error 1

### Build procedure for model: 'Controller' aborted due to an error. ??? Subsystem build failed

[yoonyku yoo]

I solved this problem by moving project(files) directory to C(main) Drive