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

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Date:	Wed, 30 Jul 2008 20:07:28 +0000
From:	"Miller, Mike (OS Dev)" <Mike.Miller@...com>
To:	Roland Dreier <rdreier@...co.com>
CC:	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

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?

-- mikem
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