Hello David, * Dr. David Kirkby wrote on Thu, Dec 24, 2009 at 05:38:23PM CET: > I'm helping on the Sage maths project > > http://www.sagemath.org/ > > where there are a large number of packages built, most of which ignore > CFLAGS. (Quite a few ignore CC and CXX too!) I'd like to display all the > warnings, but its hard when people overwrite CFLAGS. > > Is there a way I can build gcc such that effectively "-Wall" is enabled > all the time? I hate to be stating the obvious, but why not use a wrapper script? mv gcc gcc.real cat >gcc <<\EOF #! /bin/sh exec gcc.real -Wall "$@" EOF or just put one early in your $PATH. Depending on your needs, it might have to be a bit more complex (put -Wall at the end if you care about overriding -Wno-all and some other flags, for example; or only add -Wall if -c is also seen, or similarly). Cheers, Ralf
