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From: Guenter Roeck <linux@roeck-us.net>
To: Vineet Gupta <vgupta@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Jeff Moyer <jmoyer@redhat.com>,
	Alexey Brodkin <abrodkin@synopsys.com>
Subject: Re: Build failure in linux mainline when building arcv2 images
Date: Fri, 29 Jul 2016 06:43:21 -0700	[thread overview]
Message-ID: <579B5D79.8060907@roeck-us.net> (raw)
In-Reply-To: <25e43ee1-5015-9dc3-777e-6101872f2ec4@synopsys.com>

On 07/28/2016 10:20 PM, Vineet Gupta wrote:
> Hi Guenter,
>
> On 07/28/2016 08:23 PM, Guenter Roeck wrote:
>> Hi Vineet,
>>
>> Mainline fails to build arcv2 images with the following error.
>>
>> {standard input}: Assembler messages:
>> {standard input}:19174: Error: Instruction with long immediate data in delay slot
>> make[2]: *** [block/cfq-iosched.o] Error 1
>>
>> Bisect points to commit 9a7f38c42c2 ("cfq-iosched: Convert from jiffies to
>> nanoseconds"),
>> but I don't really hold it responsible. It looks more like a compiler / binutils
>> problem
>> to me.
>
> Indeed - triggers a latent bug in ARC gcc !
>
>> I am using a toolchain built with buildroot (gcc 4.8.3). Is there a more recent
>> toolchain
>> than the one in buildroot available, by any chance ? If yes, where do I find it ?
>
> Yeah there's a 4.8.5 based one (referred to as GNU 2016.03) - will prebuilt
> toolchain suffice or would you prefer building on your own. Prebuilt could be
> found below.
>
> https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases/tag/arc-2016.03
>
> For building on your own, Alexey can point to upstream buildroot which enabled
> 2016.03 tools.
>

Unfortunately, I get the same error when using "arc-linux-gcc.br_real (Buildroot 2016.05) 4.8.5".

Guenter

  reply	other threads:[~2016-07-29 13:43 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-29  3:23 Build failure in linux mainline when building arcv2 images Guenter Roeck
2016-07-29  5:20 ` Vineet Gupta
2016-07-29 13:43   ` Guenter Roeck [this message]
2016-07-29 20:03     ` Vineet Gupta
2016-07-29 21:48       ` Guenter Roeck
2016-07-29 22:46         ` Vineet Gupta
2016-07-30  4:27           ` Guenter Roeck
2016-08-01  9:53             ` Alexey Brodkin

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