linux-kernel - Re: [RFC] minimum gcc version for kernel: raise to gcc-4.3 or 4.6?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMuHMdWnLeT=j1nXmr4ezV+o9aOu0OvM0X-gq5coBJvsJ8uOGw@mail.gmail.com>
Date:   Fri, 16 Dec 2016 21:34:49 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Linux-Arch <linux-arch@...r.kernel.org>,
        linux-kbuild <linux-kbuild@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...r.kernel.org,
        Russell King <rmk+kernel@...linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        kernel-build-reports@...ts.linaro.org, kvmarm@...ts.cs.columbia.edu
Subject: Re: [RFC] minimum gcc version for kernel: raise to gcc-4.3 or 4.6?

Hi Arnd,

On Fri, Dec 16, 2016 at 8:58 PM, Arnd Bergmann <arnd@...db.de> wrote:
> On Friday, December 16, 2016 4:54:33 PM CET Geert Uytterhoeven wrote:
>> On Fri, Dec 16, 2016 at 11:56 AM, Arnd Bergmann <arnd@...db.de> wrote:
>> > Specifically on ARM, going further makes things rather useless especially
>> > for build testing: with gcc-4.2, we lose support for ARMv7, EABI, and
>> > effectively ARMv6 (as it relies on EABI for building reliably). Also,
>> > the number of false-positive build warnings is so high that it is useless
>> > for finding actual bugs from the warnings.
>>
>> If you start with that activity now, there's indeed a massive amount of
>> warnings to look into.
>> However, I've been build testing various configs with m68k-linux-gnu-gcc-4.1.2
>> and looking at the compiler warnings for years, so I only have to look
>> at new warnings.
>
> What's the reason for sticking with gcc-4.1? Does this actually work better
> for you than a more recent version, or is it just whatever you installed
> when you started the build testing?

It's just the cross compiler I built .debs of a long time ago.
As long as it works, I see no reason to upgrade, especially as long as I see
warnings for bugs that no one else is seeing. But lately you started beating
me with newer gccs ;-)

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds