linux-kernel - Re: [PATCH] ia64: minor Makefile simplification through use of cc-ifversion

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Message-ID: <20090723212809.GB9488@merkur.ravnborg.org>
Date:	Thu, 23 Jul 2009 23:28:09 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Frans Pop <elendil@...net.nl>
Cc:	linux-ia64@...r.kernel.org, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ia64: minor Makefile simplification through use of
	cc-ifversion

On Thu, Jul 23, 2009 at 08:56:50PM +0200, Frans Pop wrote:
> Signed-off-by: Frans Pop <elendil@...net.nl>
> ---
> 
> Change was suggested by Sam Ravnborg; see http://lkml.org/lkml/2009/7/18/15.
> Untested.
> 
> diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
> index 58a7e46..2bf6107 100644
> --- a/arch/ia64/Makefile
> +++ b/arch/ia64/Makefile
> @@ -41,10 +41,8 @@ $(error Sorry, you need a newer version of the assember, one that is built from
>  		ftp://ftp.hpl.hp.com/pub/linux-ia64/gas-030124.tar.gz)
>  endif
>  
> -ifeq ($(call cc-version),0304)
> -	cflags-$(CONFIG_ITANIUM)	+= -mtune=merced
> -	cflags-$(CONFIG_MCKINLEY)	+= -mtune=mckinley
> -endif
> +cflags-$(CONFIG_ITANIUM)  += $(call cc-ifversion, -eq, 0304, -mtune=merced)
> +cflags-$(CONFIG_MCKINLEY) += $(call cc-ifversion, -eq, 0304, -mtune=mckinley)

The above change is correct.
But I really wonder if the original code was correct?
Do we really only want to use the -mtune options for this specific gcc version?
If this is indeed the case this deserves a comment explaning this.

So the patch has my:

Acked-by: Sam Ravnborg <sam@...nborg.org>

But the code that this patch highligt (but does not chage) looks questionable.

	Sam
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