No, you have to enable icarus for support to be compiled in. At runtime don't use any icarus options though.
I don't know what you mean? So you put it icarus enabled in the bat file and run it. then somehow disable it?
If yes, how?
As one of the awesome moderators pointed out if you are running windows you don't have to worry about enabling Icarus. What he is talking about is the timing options and the baud options.