I think the option -D should do what you want. Using -D at the commandline you can define any preprocessorsymbol which can be tested during compilating using #ifdef or #if statements. McM -----Ursprüngliche Nachricht----- Von: John C. Arrakis [mailto:hephaestus.division@xxxxxxxxx] Gesendet: Montag, 29. September 2008 23:31 An: gcc-help@xxxxxxxxxxx Betreff: debug flags Hello, I would like to have some code for debugging reasons in a big project that I'm working on, but not via commenting and uncommenting source code lines, as this will be too time-consuming. So, I wonder if there is some way to make gcc create some kind of a global variable or a definition or something like that, that will allow me to inject in my source files pieces of code like this: # if SOME_DEBUG_FLAG do_some_debugging_stuff (); # endif I searched in the man pages, but I wasn't able to find anything related to this subject. Any help will be much appreciated! Cheers, John. -- John Coube Arrakis
