@echo off set ISDEBUG=false if "%1" == "debug" goto blockset goto block2 :blockset set ISDEBUG=true :block2 set COMPILERPATH=mxmlc.exe if not exist %COMPILERPATH% goto notex %COMPILERPATH% -warnings=false -debug=%ISDEBUG% TestFlex.as>out.txt start notepad out.txt if errorlevel==1 goto failed goto end :notex echo Flex SDK not found. Download and unpack Flex SDK into some directory and add it to PATH variable goto end :failed pause :end