linux-kernel - Re: [PATCH/RFC] m68k: Add -ffreestanding to KBUILD

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Message-ID: <CAMuHMdXJWo=R28rexHJZGof==CgEa0gbC3yr18iPs-tAkv2FZQ@mail.gmail.com>
Date:	Thu, 11 Apr 2013 20:04:31 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Michal Marek <mmarek@...e.cz>
Cc:	linux-m68k <linux-m68k@...ts.linux-m68k.org>,
	Linux-Arch <linux-arch@...r.kernel.org>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH/RFC] m68k: Add -ffreestanding to KBUILD_CFLAGS

On Wed, Apr 10, 2013 at 5:22 PM, Michal Marek <mmarek@...e.cz> wrote:
> Subject: [PATCH] m68k: Remove inline strlen() implementation
>
> GCC can replace a strncat() call with constant second argument into a
> strlen + store, which results in a link error:
>
> ERROR: "strlen" [net/ipv4/ip_tunnel.ko] undefined!
>
> The inline function is a simple for loop in C. Other architectures
> either use an asm optimized variant, or use the generic function from
> lib/string.c.
>
> Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> Signed-off-by: Michal Marek <mmarek@...e.cz>

Thanks, this one works. Let me do some measurements...

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
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