linux-kernel - RE: Problems building 2.6.26 and 2.6.27-rc1

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Date:	Wed, 30 Jul 2008 20:21:11 +0000
From:	"Miller, Mike (OS Dev)" <Mike.Miller@...com>
To:	Sam Ravnborg <sam@...nborg.org>
CC:	Roland Dreier <rdreier@...co.com>,
	LKML <linux-kernel@...r.kernel.org>,
	LKML-scsi <linux-scsi@...r.kernel.org>
Subject: RE: Problems building 2.6.26 and 2.6.27-rc1

Sam wrote:

>
> On Wed, Jul 30, 2008 at 08:07:28PM +0000, Miller, Mike (OS Dev) wrote:
> > Roland wrote:
> >
> > >
> > >  > I'm getting the following error when trying to build either
> > > 2.6.26 or  > 2.6.27-rc1:
> > >  >
> > >  > arch/x86/kernel/head64.c: In function 'x86_64_start_kernel':
> > >  > arch/x86/kernel/head64.c:88: error: size of array
> 'type name' is
> > > negative
> > >
> > > It looks like you're hitting
> > >
> > >         BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL));
> > >
> > > No idea why you're hitting that though.  What's your .config and
> > > compiler?
> > >
> > I think maybe I've figured out what's breaking my build. If
> use "make -jN" I hit the error. I usually set N to the number
> of processors (real and HT). So if /proc/cpuinfo display info
> about 4 processors I use -j4, etc. If I don't specify the
> number of jobs to run simultaneously the build completes with
> just the usual warnings.
> >
> > Any experts on parallelism out there?
>
> Can you post the output of a make -j4 V=1 run that fials and
> one that succeeds.
> Then we can maybe spot something.
>
>         Sam
Sure. Not to be stupid, but do you want the entire output from the builds or just what would go to stderr?

-- mikem
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