linux-kernel - Re: [PATCH] kernel: add support for gcc 5

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Message-Id: <20140904142529.860f4dc4514def7fb7a9d365@linux-foundation.org>
Date:	Thu, 4 Sep 2014 14:25:29 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Richard Weinberger <richard.weinberger@...il.com>
Cc:	Sasha Levin <sasha.levin@...cle.com>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org,
	Greg KH <greg@...ah.com>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: Re: [PATCH] kernel: add support for gcc 5

On Thu, 4 Sep 2014 23:19:34 +0200 Richard Weinberger <richard.weinberger@...il.com> wrote:

> On Thu, Sep 4, 2014 at 11:12 PM, Andrew Morton
> <akpm@...ux-foundation.org> wrote:
> > On Thu,  4 Sep 2014 11:37:19 -0400 Sasha Levin <sasha.levin@...cle.com> wrote:
> >
> >> We're missing include/linux/compiler-gcc5.h which is required now
> >> because gcc branched off to v5 in trunk.
> >>
> >> Just copy the relevant bits out of include/linux/compiler-gcc4.h,
> >> no new code is added as of now.
> >>
> >> This fixes a build error when using gcc 5.
> >
> > I think I'll stick a cc:stable on this one, as people will presumably
> > wish to compile older kernels with newer gcc's at some time in the
> > future.
> 
> CC'ing Hannes, he sent a much simpler gcc5 patch a few days ago.
> https://lkml.org/lkml/2014/8/26/710

That approach won't last for long - as soon as we add some
gcc5-specific thing, we'll need a new file.

Let history be a guide:

diff -u include/linux/compiler-gcc3.h include/linux/compiler-gcc4.h
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