Thread Subject: Random 'make' error when using RTW for xPC

I am using Simulink and RTW to build and download a model to
the xPC. I am using R2007a. Occasionally, I will get this
error when I try to build the model:

   Creating library globalcountersimulator.lib and object
globalcountersimulator.exp
globalcountersimulator.obj : error LNK2001: unresolved
external symbol _rt_InitInfAndNaN
xpctarget.obj : error LNK2001: unresolved external symbol
_rt_InitInfAndNaN
rt_logging.obj : error LNK2001: unresolved external symbol
_rtInf
globalcountersimulator.dll : fatal error LNK1120: 2
unresolved externals
NMAKE : fatal error U1077: 'link' : return code '0x460'
Stop.
 
C:\Documents and Settings\user\My
Documents\MATLAB\globalcountersimulator\globalcountersimulator_xpc_rtw>echo
The make command returned an
error of 2
The make command returned an error of 2
 
C:\Documents and Settings\uer\My
Documents\MATLAB\globalcountersimulator\globalcountersimulator_xpc_rtw>An_error_occurred_during_the_call_to
_make
'An_error_occurred_during_the_call_to_make' is not
recognized as an internal or external command,
operable program or batch file.

But if I hit 'build' again, without changing any files, it
will work. I don't understand why this is happening.

Even I get this error and the model doesn't build at all.
I could build the same model prior to have installed another real time target scale-rt. I guess the scale-rt installation would have modified certain rtw files in the root but how do I debug it to find out the exact problem?

"Thomas Marullo" <tmm3@lehigh.edu> wrote in message <fhk7f6$182$1@fred.mathworks.com>...
> I am using Simulink and RTW to build and download a model to
> the xPC. I am using R2007a. Occasionally, I will get this
> error when I try to build the model:
>
> Creating library globalcountersimulator.lib and object
> globalcountersimulator.exp
> globalcountersimulator.obj : error LNK2001: unresolved
> external symbol _rt_InitInfAndNaN
> xpctarget.obj : error LNK2001: unresolved external symbol
> _rt_InitInfAndNaN
> rt_logging.obj : error LNK2001: unresolved external symbol
> _rtInf
> globalcountersimulator.dll : fatal error LNK1120: 2
> unresolved externals
> NMAKE : fatal error U1077: 'link' : return code '0x460'
> Stop.
>
> C:\Documents and Settings\user\My
> Documents\MATLAB\globalcountersimulator\globalcountersimulator_xpc_rtw>echo
> The make command returned an
> error of 2
> The make command returned an error of 2
>
> C:\Documents and Settings\uer\My
> Documents\MATLAB\globalcountersimulator\globalcountersimulator_xpc_rtw>An_error_occurred_during_the_call_to
> _make
> 'An_error_occurred_during_the_call_to_make' is not
> recognized as an internal or external command,
> operable program or batch file.
>
> But if I hit 'build' again, without changing any files, it
> will work. I don't understand why this is happening.