Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Fri, 5 Apr 2019 18:26:27 +0200
From:   'Luis Ressel' <aranea@aixah.de>
To:     David Laight <David.Laight@aculab.com>
Cc:     Josh Poimboeuf <jpoimboe@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        open list <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [PATCH] objtool: Don't use -Werror
Message-ID: <20190405162627.h3fadip7psc77zdf@vega.skynet.aixah.de>
References: <20190405110151.2461-1-aranea@aixah.de>
 <20190405123909.tupbgueie4czg2dd@treble>
 <20190405142443.rgpwbgyym76xizad@vega.skynet.aixah.de>
 <20190405143926.wmrkjsazlheeg6qs@treble>
 <20190405160550.62arkmvj67zm6oc2@vega.skynet.aixah.de>
 <a9dfc08702044b3db89c0584c0f79229@AcuMS.aculab.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <a9dfc08702044b3db89c0584c0f79229@AcuMS.aculab.com>
User-Agent: NeoMutt/20180716
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Fri, Apr 05, 2019 at 04:16:14PM +0000, David Laight wrote:

> In which case you should be looking at a way of removing -Wundef
> not removing -Werror.

No, my whole point is that this blacklisting approach doesn't work
outside a controlled dev environment, because different
compilers/compiler versions produce wildy different warnings.

I'm aware of several Linux distros which remove -Werror from build
systems whereever it is encountered. It's a well-known fact among
distributors that enabling -Werror for production builds is a bad idea.

Cheers,
Luis