linux-kernel - Re: [scsi bug] spurious build failures in aic7xxx

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Date:	Sat, 2 Feb 2008 15:03:26 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	linux-kernel@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [scsi bug] spurious build failures in aic7xxx


* Sam Ravnborg <sam@...nborg.org> wrote:

> On Fri, Feb 01, 2008 at 11:50:56PM +0100, Ingo Molnar wrote:
> > 
> > i'm getting spurious build failures with latest -git:
> > 
> > In file included from drivers/scsi/aic7xxx/aic7xxx_proc.c:44:
> > drivers/scsi/aic7xxx/aic7xxx_inline.h: In function 'ahc_pause_bug_fix':
> > drivers/scsi/aic7xxx/aic7xxx_inline.h:66: error: 'CCSCBCTL' undeclared (first use in this function)
> > drivers/scsi/aic7xxx/aic7xxx_inline.h:66: error: (Each undeclared 
> > identifier is reported only once
> > drivers/scsi/aic7xxx/aic7xxx_inline.h:66: error: for each function it 
> > appears in.)
> > drivers/scsi/aic7xxx/aic7xxx_inline.h: In function 'ahc_update_residual':
> > 
> > BUT, if i redo the build, it now builds. It's probably some generated 
> > file ordering problem?
> 
> Can you give a bit more details about your build setup. I cannot 
> reproduce it here and I tried several combinations of -j values and 
> ways to specify what to build.

it's not readily reproducable, it happens about every 20-30 builds, if i 
force AIC7xxx. I've attached a config from earlier today that produced 
the failure.

> I would at least like to see all lines preceeding this on in your 
> build log so I get an understanding what happened just before you hit 
> this.
> 
> It looks like make started updating the aic7xxx_reg.h file but failed 
> to finsih the job before it started building aic7xxx_proc.c so the 
> build of aic7xxx_proc.c picked up a half written .h file.

i'll try to find the build logs for this. (i save them all away, so it 
should be recoverable)

	Ingo

View attachment "config-Sat_Feb__2_14_41_43_CET_2008.bad" of type "text/plain" (48074 bytes)