linux-kernel - Re: [PATCH] kbuild: sparse needs CF not CHECKFLAGS

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Message-ID: <20080627210727.GD29245@uranus.ravnborg.org>
Date:	Fri, 27 Jun 2008 23:07:27 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
Cc:	"Robert P. J. Day" <rpjday@...dspring.com>,
	linux-kbuild@...r.kernel.org,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kbuild: sparse needs CF not CHECKFLAGS

On Fri, Jun 20, 2008 at 03:45:12PM +0200, Geert Uytterhoeven wrote:
> Documentation/sparse.txt tells to use:
> 
>     make C=2 CHECKFLAGS="-D__CHECK_ENDIAN__"
> 
> However, this still doesn't enable endian checks. The correct syntax is:
> 
>     make C=2 CF="-D__CHECK_ENDIAN__"
> 
> This documentation bug was introduced by the following commit:
> 
>     commit 1c7bafe7206d928eaccbcbd08d868733e0fb7054
>     Author: Robert P. J. Day <rpjday@...dspring.com>
>     Date:   Wed Sep 13 07:57:50 2006 -0400
> 
> 	kbuild: clarify "make C=" build option
> 	    
> 	Clarify the use of "make C=" in the top-level Makefile, and fix a
> 	typo in the Documentation file.
> 
> 	Signed-off-by: Sam Ravnborg <sam@...nborg.org>
> 
> This `typo' was not a typo, as `CF' had been introduced much earlier, by:
> 
>     commit 7b49bb9aff8b14d15da58111d8908c877c0a525e
>     Author: viro@...IV.linux.org.uk <viro@...IV.linux.org.uk>
>     Date:   Fri Sep 9 21:14:35 2005 +0100
> 
> 	[PATCH] kbuild: CF=<arguments> passes arguments to sparse
> 	
> 	Allows to add to sparse arguments without mutilating makefiles - just
> 	pass CF=<arguments> and they will be added to CHECKFLAGS.
>     
>     Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
>     Signed-off-by: Sam Ravnborg <sam@...nborg.org>
> 
> Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>

Applied

	Sam
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