From: Andi Kleen <andi@firstfloor.org>
To: Michal Marek <mmarek@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@vger.kernel.org, linux-arch@vger.kernel.org,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH/RFC] m68k: Add -ffreestanding to KBUILD_CFLAGS
Date: Wed, 10 Apr 2013 19:48:59 +0200 [thread overview]
Message-ID: <20130410174859.GE16732@two.firstfloor.org> (raw)
In-Reply-To: <51653C5D.4060408@suse.cz>
> My understanding is, that with -fnobuiltin, the compiler is not allowed
> to make assumptions about functions if it does not see their definition,
> even if they resemble standard functions. E.g. on x86_64, strlen() is
> out-of-line, so gcc would have to assume, that strcmp() has side
> effects. How about just naming the m68k inline function 'strlen'?
You should always supply an out of line fallback version with
the standard name. The easiest way is to define the right
define so that lib/string.c does it.
-Andi
next prev parent reply other threads:[~2013-04-10 17:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-10 9:24 [PATCH/RFC] m68k: Add -ffreestanding to KBUILD_CFLAGS Geert Uytterhoeven
2013-04-10 10:18 ` Michal Marek
2013-04-10 10:59 ` Geert Uytterhoeven
2013-04-10 12:26 ` Michal Marek
2013-04-10 14:19 ` Geert Uytterhoeven
2013-04-10 15:22 ` Michal Marek
2013-04-11 18:04 ` Geert Uytterhoeven
2013-04-12 19:47 ` Geert Uytterhoeven
2013-04-10 17:48 ` Andi Kleen [this message]
2013-04-10 17:06 ` David Miller
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