linux-kernel - Re: [PATCH v2] compiler-gcc.h: Disable _

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Message-ID: <CAMuHMdW474PRT3F3qfcJaghoB1NTH0o2xXuuLpQfWPqpSSe-mA@mail.gmail.com>
Date: Thu, 3 Oct 2024 10:57:50 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Andreas Schwab <schwab@...ux-m68k.org>
Cc: Tony Ambardar <tony.ambardar@...il.com>, Daniel Borkmann <daniel@...earbox.net>, 
	Miguel Ojeda <ojeda@...nel.org>, Jiri Olsa <jolsa@...nel.org>, 
	Andrew Morton <akpm@...ux-foundation.org>, Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] compiler-gcc.h: Disable __retain on gcc-11

Hi Andreas,

On Thu, Oct 3, 2024 at 10:42 AM Andreas Schwab <schwab@...ux-m68k.org> wrote:
> On Okt 03 2024, Geert Uytterhoeven wrote:
> > | That ultimately depends on binutils support for SHF_GNU_RETAIN (2.36+).
> >
> > So binutils 2.38-4ubuntu2.6 is sufficiently new, but it doesn't work?
>
> It ultimately depends on the binutils version the compiler was built
> against.

Is there an easy way to check that version?

debian/rules for the gcc-11-cross-11ubuntu1.3 source package contains:

    VER_BINUTILS   := 2.37-5
    MIN_VER_BINUTILS   := 2.37-5

so in theory it could have been built again 2.37, which is still
sufficiently new.

"dpkg -s gcc-11-arm-linux-gnueabihf" says:

    Depends: [...] binutils-arm-linux-gnueabihf (>= 2.38) [...]

so I guess it was actually built against 2.38, which is OK.

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