linux-kernel - Re: Build failure: bisected: v3.1-rc1 with config ARCH_OMAP && !ARCH

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Date:	Wed, 10 Aug 2011 01:37:31 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Paul Walmsley <paul@...an.com>
Cc:	Daniel Morsing <daniel.morsing@...il.com>,
	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
	Peter Ujfalusi <peter.ujfalusi@...com>
Subject: Re: Build failure: bisected: v3.1-rc1 with config ARCH_OMAP &&
 !ARCH_OMAP4 fails with linker error

* Paul Walmsley <paul@...an.com> [110809 20:01]:
> On Tue, 9 Aug 2011, Tony Lindgren wrote:
> 
> > Hmm, there are also these when CONFIG_ARCH_OMAP4 is not selected:
> > 
> > arch/arm/mach-omap2/built-in.o: In function `_enable_module':
> > arch/arm/mach-omap2/omap_hwmod.c:701: undefined reference to `omap4_cminst_module_enable'
> > arch/arm/mach-omap2/built-in.o: In function `_disable_module':
> > arch/arm/mach-omap2/omap_hwmod.c:726: undefined reference to `omap4_cminst_module_disable'
> > arch/arm/mach-omap2/built-in.o: In function `_wait_target_disable':
> > arch/arm/mach-omap2/omap_hwmod.c:1179: undefined reference to `omap4_cminst_wait_module_idle'
> > distcc[27594] ERROR: compile (null) on localhost failed
> > make: *** [.tmp_vmlinux1] Error 1
> > 
> > Care to take a look?
> 
> Weird, those don't show up on my n800 config (below) with CodeSourcery 
> 2010.09-50.  Looks like something isn't removing the dead code.  will post 
> a patch for this.
> 
> If you post which compiler you're using, I'll add it to my build tests 
> too...

Happens at least with this one:

gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203)

Tony
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