Also sprach C.Mohanasundaram: } > I've always used the -O2 flag when compiling modules, but with everyone } > asking about it lately it occurred to me that I don't know *why* I have to } > do it. } } } as far as i know it is an optimization flag. the number ranges from 1 to 6 } others please throw more light on this } There are different levels of optimizations which gcc offers. You can have none, some rather simple ones (-O1), some better ones (-O2), some even better ones, but which may be risky in certain situations (-O3), and so on. You should look in "info gcc" for more information on this. -- || Bill Wendling wendling@ganymede.isdn.uiuc.edu - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/