why is there an error when i built every simulink model?

I work on Matlab R2011b, windows Vista, I've installed lcc compiler,and visual C++ professional 6.0. In the mex setup I select the lcc compiler (but the error there is also with C++ compiler).

I open a simulink model, also a very simple model (like ' costant => abs => display ' ), and it run correctly. But when I do ctrl+B , matlab give me error. The messages are:

### Caching model source code ......................... ### Writing header file Untitled1_types.h ### Writing header file Untitled1.h . ### Writing header file rtwtypes.h ### Writing source file Untitled1.c ### Writing header file Untitled1_private.h . ### Writing header file rtmodel.h ### Writing header file rt_nonfinite.h ### Writing source file rt_nonfinite.c . ### Writing header file rt_defines.h ### Writing header file rtGetInf.h ### Writing source file rtGetInf.c . ### Writing header file rtGetNaN.h ### Writing source file rtGetNaN.c ### TLC code generation complete. . ### Processing Template Makefile: C:\Program Files\MATLAB\R2011b\rtw\c\grt\grt_lcc.tmf ### Untitled1.mk which is generated from C:\Program Files\MATLAB\R2011b\rtw\c\grt\grt_lcc.tmf is up to date ### Building Untitled1: .\Untitled1.bat

C:\Users\max\Desktop\tesi\7 aprile lqrsim2\Untitled1_grt_rtw>set MATLAB=C:\Program Files\MATLAB\R2011b

C:\Users\max\Desktop\tesi\7 aprile lqrsim2\Untitled1_grt_rtw>"C:\Program Files\MATLAB\R2011b\bin\win32\gmake" -f Untitled1.mk GENERATE_REPORT=0 C:/PROGRA~1/MATLAB/R2011b\sys\lcc\bin\lcc -c -FoUntitled1.obj -DUSE_RTMODEL -DMODEL=Untitled1 -DRT -DNUMST=1 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -DHAVESTDIO -I. -I.. -IC:/PROGRA~1/MATLAB/R2011b\simulink\include -IC:/PROGRA~1/MATLAB/R2011b\extern\include -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\libsrc -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\common -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\tcpip -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\serial -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\custom -IC:/Users/max/Desktop/tesi/7APRIL~1/Untitled1_grt_rtw -IC:/Users/max/Desktop/tesi/7APRIL~1 -IC:/PROGRA~1/MATLAB/R2011b\sys\lcc\include -noregistrylookup Untitled1.c Warning Untitled1.c: 61 Statement has no effect 0 errors, 1 warnings C:/PROGRA~1/MATLAB/R2011b\sys\lcc\bin\lcc -c -FortGetInf.obj -DUSE_RTMODEL -DMODEL=Untitled1 -DRT -DNUMST=1 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -DHAVESTDIO -I. -I.. -IC:/PROGRA~1/MATLAB/R2011b\simulink\include -IC:/PROGRA~1/MATLAB/R2011b\extern\include -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\libsrc -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\common -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\tcpip -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\serial -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\custom -IC:/Users/max/Desktop/tesi/7APRIL~1/Untitled1_grt_rtw -IC:/Users/max/Desktop/tesi/7APRIL~1 -IC:/PROGRA~1/MATLAB/R2011b\sys\lcc\include -noregistrylookup rtGetInf.c C:/PROGRA~1/MATLAB/R2011b\sys\lcc\bin\lcc -c -FortGetNaN.obj -DUSE_RTMODEL -DMODEL=Untitled1 -DRT -DNUMST=1 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -DHAVESTDIO -I. -I.. -IC:/PROGRA~1/MATLAB/R2011b\simulink\include -IC:/PROGRA~1/MATLAB/R2011b\extern\include -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\libsrc -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\common -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\tcpip -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\serial -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\custom -IC:/Users/max/Desktop/tesi/7APRIL~1/Untitled1_grt_rtw -IC:/Users/max/Desktop/tesi/7APRIL~1 -IC:/PROGRA~1/MATLAB/R2011b\sys\lcc\include -noregistrylookup rtGetNaN.c C:/PROGRA~1/MATLAB/R2011b\sys\lcc\bin\lcc -c -Fort_nonfinite.obj -DUSE_RTMODEL -DMODEL=Untitled1 -DRT -DNUMST=1 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -DHAVESTDIO -I. -I.. -IC:/PROGRA~1/MATLAB/R2011b\simulink\include -IC:/PROGRA~1/MATLAB/R2011b\extern\include -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\libsrc -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\common -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\tcpip -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\serial -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\custom -IC:/Users/max/Desktop/tesi/7APRIL~1/Untitled1_grt_rtw -IC:/Users/max/Desktop/tesi/7APRIL~1 -IC:/PROGRA~1/MATLAB/R2011b\sys\lcc\include -noregistrylookup rt_nonfinite.c Warning rt_nonfinite.c: 39 Statement has no effect 0 errors, 1 warnings C:/PROGRA~1/MATLAB/R2011b\sys\lcc\bin\lcc -c -Fogrt_main.obj -DUSE_RTMODEL -DMODEL=Untitled1 -DRT -DNUMST=1 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -DHAVESTDIO -I. -I.. -IC:/PROGRA~1/MATLAB/R2011b\simulink\include -IC:/PROGRA~1/MATLAB/R2011b\extern\include -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\libsrc -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\common -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\tcpip -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\serial -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\custom -IC:/Users/max/Desktop/tesi/7APRIL~1/Untitled1_grt_rtw -IC:/Users/max/Desktop/tesi/7APRIL~1 -IC:/PROGRA~1/MATLAB/R2011b\sys\lcc\include -noregistrylookup C:/PROGRA~1/MATLAB/R2011b/rtw/c/grt/grt_main.c C:/PROGRA~1/MATLAB/R2011b\sys\lcc\bin\lcc -c -Fort_sim.obj -DUSE_RTMODEL -DMODEL=Untitled1 -DRT -DNUMST=1 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -DHAVESTDIO -I. -I.. -IC:/PROGRA~1/MATLAB/R2011b\simulink\include -IC:/PROGRA~1/MATLAB/R2011b\extern\include -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\libsrc -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\common -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\tcpip -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\serial -IC:/PROGRA~1/MATLAB/R2011b\rtw\c\src\ext_mode\custom -IC:/Users/max/Desktop/tesi/7APRIL~1/Untitled1_grt_rtw -IC:/Users/max/Desktop/tesi/7APRIL~1 -IC:/PROGRA~1/MATLAB/R2011b\sys\lcc\include -noregistrylookup C:/PROGRA~1/MATLAB/R2011b/rtw/c/src/rt_sim.c Warning C:/PROGRA~1/MATLAB/R2011b/rtw/c/src/rt_sim.c: 68 static `struct TimingData_Tag td_struct' is not referenced 0 errors, 1 warnings C:/PROGRA~1/MATLAB/R2011b\sys\lcc\bin\lcclnk -s -LC:/PROGRA~1/MATLAB/R2011b\sys\lcc\lib -o ../Untitled1.exe Untitled1.obj rtGetInf.obj rtGetNaN.obj rt_logging.obj rt_nonfinite.obj grt_main.obj rt_sim.obj @Untitled1_ref.rsp "cmd" non Š riconosciuto come comando interno o esterno, un programma eseguibile o un file batch. gmake: * [../Untitled1.exe] Error 1 ### Build procedure for model: 'Untitled1' aborted due to an error.

N.B. "non Š riconosciuto come comando interno o esterno, un programma eseguibile o un file batch" is in italian, it means "is not recognized as an internal or external command, operable program or batch file"

[Kaustubha Govind]

Please see if my comment here helps.

[Ahmed hashim]

i have the same problem if answer it tell me