linux-kernel - Re: [PATCH] objtool: Don't use -Werror

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Message-ID: <20190405171207.jmi7zehu37ksg5a4@treble>
Date:   Fri, 5 Apr 2019 12:12:07 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     David Laight <David.Laight@...LAB.COM>
Cc:     'Luis Ressel' <aranea@...ah.de>,
        Peter Zijlstra <peterz@...radead.org>,
        open list <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH] objtool: Don't use -Werror

On Fri, Apr 05, 2019 at 04:35:50PM +0000, David Laight wrote:
> From: Josh Poimboeuf
> > Sent: 05 April 2019 17:21
> ..
> > > FWIW I had to update libelf.so from version 0.153 to 0.165 in
> > > order for the amd64 orc unwinder code in objtool to not generate
> > > corrupt output files.
> > > That is an Ubuntu 13.04 system - nothing like 10 years old.
> > 
> > Ah.  It would be great if we had a patch to fail the build for old
> > versions of elfutils-libelf as well.
> 
> I think the check I added for that specific error got committed.
> Look at the defintion of cmd_objtool in scripts/Makefile.build.
> 
> Although I seem to have a local change to the definition of
> cmd_modversions_c.
> It might be that the version of a change I made that got committed
> is missing an extra $ when processing the saved output from 'objdump -h'.
> It used to just pipe into grep - so lost the error result from objdump.

Hm, I don't see that in cmd_objtool, or any commits from you in
scripts/Makefile.build.

-- 
Josh