linux-kernel - Re: cross compilers [was build failure of sorts]

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Message-ID: <57691019.6000204@synopsys.com>
Date:	Tue, 21 Jun 2016 15:29:53 +0530
From:	Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Anton Kolesov <Anton.Kolesov@...opsys.com>,
	Cupertino Miranda <Cupertino.Miranda@...opsys.com>,
	Ingo Molnar <mingo@...nel.org>,
	"Guenter Roeck" <linux@...ck-us.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-snps-arc@...ts.infradead.org" 
	<linux-snps-arc@...ts.infradead.org>,
	Michael Ellerman <michael@...erman.id.au>,
	Tony Breeds <tony@...eyournoodle.com>
Subject: Re: cross compilers [was build failure of sorts]

On Tuesday 21 June 2016 03:15 PM, Peter Zijlstra wrote:
> On Tue, Jun 21, 2016 at 09:28:56AM +0000, Vineet Gupta wrote:
>> On Tuesday 21 June 2016 01:13 PM, Peter Zijlstra wrote:
>>> On Tue, Jun 21, 2016 at 05:29:28AM +0000, Vineet Gupta wrote:
>>>>> On Saturday 18 June 2016 03:47 PM, Peter Zijlstra wrote:
>>>>>>> As you can see, arc doesn't even build upstream binutils :/
>>>>>>> (binutils-2_26-branch as of today).
>>>>>
>>>>> Hmm - we are still in fight w.r.t. upstreaming gcc fully (ARCv2 gcc support)
>>>>> although ARCompact has been there for some time. binutils upstream should work -
>>>>> I'll check why the buildall stuff fails.
>>> I can run that build again and send you the resulting log files in
>>> private.
>>
>> Thx for the off-list log. The issue is gdb not yet upstream. So it seems we will
>> have to wait for things on upstreaming to settle down before I can formally update
>> segher's scripts to support ARC.
> 
> Ah, lemme add --disable-gdb to the binutils build.

Right - that works around gdb, but gcc upstream still has partial support for
ARCv2 with patches being reviewed very sloooowly by the old ARC port maintainer.
You could give it a try though !

> Should arc-*-* list gdb in their noconfigdirs like many other archs do
> too?

Yeah indeed that chould be done while gdb upstream is waiting. @Anton can we do
that - update binutils/configure.ac to not configure gdb for ARC.