Re: introduce arch/$ARCH/Kbuild ?

[Ralf Baechle <ralf@linux-mips.org>]

On Thu, Apr 16, 2009 at 08:37:01PM +0200, Sam Ravnborg wrote:

> We have discussed privately the possiblity to cover
> all of arch/x86/* with -Werror and I came up with some
> suggestions so we could cover all subdirectories
> with a simple:
> 
>     subdir-ccflags-y := -Werror
> 
> I will sent a separate post on this when I have a patch ready..
> 
> But doing so required us to modify a lot of Makefiles
> in arch/x86 - too much for my taste.
> 
> Looking futher I realised that we could move all the core-y
> stuff to a separate Kbuild file as done by the appended patch.
> We would then cover all the directories with a single:
> 
>     subdir-ccflags-y := -Werror
> 
> 
> This has the added benefit that you can now do:
> 
>     make arch/x86/
> 
> And you will build most (but not all) of the x86 files.
> That alone was enough rationale for Ingo to apply it (and I agree).
> 
> What remains are the libs-y and driver-y parts.
> There is no way to specify these today.
> 
> If you think this looks wortwhile for your architecture I
> will be glad to help cook up a patch - albeit it is trivial
> to do so yourself.

Most of arch/mips uses -Werror these days and while painful at times it
keeps everybody on their toes hopefully cleaner, less buggy code.  So if
your solution allows adding -Werror to all subdirs automatically with
a mechanism to remove -Werror from a few selected dirs then I'm interested.

  Ralf