On Mon, Feb 21, 2011 at 12:03:22PM +0100, Borislav Petkov wrote: > > Add a 'W=1' Makefile switch which adds additional checking per build > object. > > The idea behind this option is targeted at developers who, in the > process of writing their code, want to do the occasional > > make W=1 [target.o] > > and let gcc do more extensive code checking for them. Then, they > could eyeball the output for valid gcc warnings about various > bugs/discrepancies which are not reported during the normal build > process. > > For more background information and a use case, read through this > thread: http://marc.info/?l=kernel-janitors&m=129802065918147&w=2 > > -v4: Enable this for gcc only. Also, check for options which are not > supported by every gcc version we use to build the kernel. Adding those > checks for _every_ option slows down the build noticeably so be sensible > here and add it only when your gcc version chokes on a particular > option. > > -v[2..3]: move to Makefile.build > > Cc: Michal Marek <mmarek@xxxxxxx> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx> > Cc: linux-kbuild@xxxxxxxxxxxxxxx > Acked-by: Ingo Molnar <mingo@xxxxxxx> > Signed-off-by: Borislav Petkov <bp@xxxxxxxxx> Ping? Michal, Sam, any news here? FWIW, I've been build-testing amd64_edac.c with it and have caught a bunch of buglets with it. IMHO, it really helps to enable more extensive gcc checking in debugging builds. Thanks. -- Regards/Gruss, Boris. -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
