linux-kernel - Re: [PATCH] Kbuild: x86: Eliminate duplicate command line options

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Date:	Fri, 22 Aug 2014 17:41:33 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Kbuild: x86: Eliminate duplicate command line options

Rasmus Villemoes <linux@...musvillemoes.dk> writes:

> The options -mno-mmx and -mno-sse are unconditionally added to
> KBUILD_CFLAGS in both branches of an ifeq and through a $(cc-option)
> further down. We can safely remove the first instances.
>
> In fact, since the -mno-mmx and -mno-sse options were introduced
> simultaneous with the other two options in the $(cc-option) [according
> to http://www.gnu.org/software/gcc/gcc-3.1/changes.html], and since
> the former were unconditionally used, one can deduce that only gcc
> versions knowing about all four are supported. So also eliminate the
> $(cc-option) wrap.
>
> Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>

Ping.
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