linux-kernel - Re: [PATCH v3] kbuild: Fix gcc -x syntax

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Date:	Wed, 03 Oct 2012 11:17:47 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Jean Delvare <jdelvare@...e.de>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org,
	Bernhard Walle <bernhard@...lle.de>,
	Ralf Baechle <ralf@...ux-mips.org>, akpm@...ux-foundation.org
Subject: Re: [PATCH v3] kbuild: Fix gcc -x syntax

On 2.10.2012 16:42, Jean Delvare wrote:
> The correct syntax for gcc -x is "gcc -x assembler", not
> "gcc -xassembler". Even though the latter happens to work, the former
> is what is documented in the manual page and thus what gcc wrappers
> such as icecream do expect.
> 
> This isn't a cosmetic change. The missing space prevents icecream from
> recognizing compilation tasks it can't handle, leading to silent kernel
> miscompilations.
> 
> Besides me, credits go to Michael Matz and Dirk Mueller for
> investigating the miscompilation issue and tracking it down to this
> incorrect -x parameter syntax.

Applied to kbuild.git#rc-fixes. Thanks to everyone involved.

Michal
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