On Fri, Aug 31, 2007 at 11:00:27AM -0400, [email protected] wrote:
> On Fri, 31 Aug 2007 10:42:29 +0200, Adrian Bunk said:
> > On Fri, Aug 31, 2007 at 10:37:28AM +0200, Oliver Neukum wrote:
> > > Hi,
> > >
> > > I only touched sound/usb/usbaudio.c
> > > Nevertheless the whole subtree und sound/ is recompiling. What's
> > > happening?
> >
> > The only file that gets compiled (CC) should be sound/usb/usbaudio.c
> >
> > It seems you are confused by the fact that this recompilation results in
> > several relinks (LD)?
>
> Or something else changed that he didn't realize. Just the other day, I
> applied a one-line patch that hit one .c file, and *the entire kernel*
> started rebuilding.
>
> Took me a while to figure out that I'd been looking for something else, and
> done a 'vi Makefile' in the top level, and exited with 'ZZ' rather than ':q' ;)
That should not result in a full rebuild, but you would see at least stuff in
kernel/ being compiled.
kbuild try to track all dependencies and sometimes people have a few suprises.
But the important part is that people *trust* that kbuild does the right thing
when they touch something - and so it is these days.
Sam
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