Hi , Thanks for the response . I know that the flags are documented , but which all get used with -O2 , -O3 ,..... Can we not find this during compiling ? Cheers ! --- Eljay Love-Jensen <eljay@xxxxxxxxx> wrote: > Hi who-ever-you-are, > > That information is available at > <http://gcc.gnu.org/onlinedocs/>. > > HTH, > --Eljay > > ________________________________________________________________________ Send free SMS using the Yahoo! Messenger. Go to http://in.mobile.yahoo.com/new/pc/