linux-kernel - Re: Build warning on 32-bit PPC - bisected to commit 989cea5c14be

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Message-ID: <20161222120224.36202396@roar.ozlabs.ibm.com>
Date:   Thu, 22 Dec 2016 12:02:24 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     Larry Finger <Larry.Finger@...inger.net>
Cc:     Russell King <rmk+kernel@...linux.org.uk>,
        Michal Marek <mmarek@...e.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...abs.org>
Subject: Re: Build warning on 32-bit PPC - bisected to commit 989cea5c14be

On Wed, 21 Dec 2016 13:49:07 -0600
Larry Finger <Larry.Finger@...inger.net> wrote:

> I am getting the following warning when I build kernel 4.9-git on my PowerBook 
> G4 with a 32-bit PPC processor:
> 
>    AS      arch/powerpc/kernel/misc_32.o
> arch/powerpc/kernel/misc_32.S:299:7: warning: "CONFIG_FSL_BOOKE" is not defined 
> [-Wundef]
> 
> This problem has been bisected to commit 989cea5c14be ("kbuild: prevent 
> lib-ksyms.o rebuilds").
> 
> Thanks,
> 
> Larry

Hi Larry,

This is strange you've bisected it there, I can't see how that patch would
trigger it. That said, powerpc has had a few small build system glitches.

It looks like this warning could be fixed by changing #elif CONFIG_FSL_BOOKE
to #elif defined (CONFIG_FSL_BOOKE). Want to send a patch (if it works)?

Thanks,
Nick