I have a batch file to filter a compiler output like this:

cmd "/c c:\CCStudio_v3.1\DosRun.bat > nul && make -f project.mak ../Ou
+tput/Debug/obj/%1%.obj 2>&1 | perl vcproj_filter.pl && EXIT errorleve
+l"
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The return code from the compiler is evaluated by the caller but will be lost due to the call of perl. So I want to read ERRORLEVEL - the return code of last command *before* my script was started - and return it as exit code by the perl script.