Date: Sun, 17 Dec 2017 22:28:56 +0100
From: Lukasz Majewski <lukma@denx.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Alexander Sverdlin <alexander.sverdlin@gmail.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Hartley Sweeten <hsweeten@visionengravers.com>,
        Russell King <linux@armlinux.org.uk>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Olof Johansson <olof@lixom.net>
Subject: Re: [PATCH v5 0/4] ARM: ep93xx: ts72xx: Add support for BK3 board
Message-ID: <20171217222856.2c5937a4@jawa>
In-Reply-To: <CAK8P3a09V1ZhhVCvdy27BiBCMM54zo4qyypgSDvrg2CdpneVmg@mail.gmail.com>
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        <20171211233625.5689-1-lukma@denx.de>
        <CACRpkdbCeBCENDcRcYBKTXVNz6H3t=WKHYP8Uf3WJ=Wvtib1Jg@mail.gmail.com>
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Hi Arnd,

> On Sun, Dec 17, 2017 at 8:41 PM, Lukasz Majewski <lukma@denx.de>
> wrote:
> >> >> We also need to think about upholding support in GCC for
> >> >> ARMv4(t) for the foreseeable future if there is a big web of
> >> >> random deeply embedded systems out there that will need
> >> >> updates. =20
> >> >
> >> > But we should definitely preserve at least what we have. =20
> >>
> >> Plain ARMv4 (and earlier) support in gcc is already marked
> >> 'deprecated' and will likely be gone in gcc-8 (it's still there as
> >> of last week). ARMv4T is going to be around for a while, and you
> >> can even keep building for ARMv4 using "-march=3Darmv4t -marm" when
> >> linking with 'ld --fix-v4bx'. =20
> >
> > I think that we shall start complaining on the gcc-devel mailing
> > list now.
> >
> > I would be hard to wake up in 2 years time and realise that we don't
> > have a modern compiler. =20
>=20
> What distro or build system are you using?

I'm using OE with the "include conf/machine/include/tune-arm920t.inc"

GCC 7.2 is working=20

> It would also be helpful
> to test whether the -march=3Darmv4t/--fix-v4bx workaround produces
> working binaries for you, in that case you could report to the gcc
> developers that the removal of armv4 can continue but that
> the --fix-v4bx option in ld needs to stay around.

I may ask this issue on OE/Yocto mailing list as well....

Thanks for hint.

>=20
>        Arnd


Best regards,

Lukasz Majewski

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