linux-kernel - Re: [PATCH 00/21] Staging: cleaned up makefiles cflag lines

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Date:	Fri, 24 Sep 2010 13:51:08 -0700
From:	matt mooney <mfm@...eddisk.com>
To:	T Dent <tdent48227@...il.com>
Cc:	matt mooney <mfmooney@...il.com>, greg@...ah.com,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 00/21] Staging: cleaned up makefiles cflag lines

On 16:39 Fri 24 Sep     , T Dent wrote:
> On 9/24/10, matt mooney <mfmooney@...il.com> wrote:
> > On Fri, Sep 24, 2010 at 11:25 AM, T Dent <tdent48227@...il.com> wrote:
> >> I changed every makefile in the staging directory to use the proper
> >> ccflags-y option instead of EXTRA_CFLAGS. It builds also :) .
> >
> > Um, you didn't do a lot of these right. Maybe you should look into why
> > the change was made in the first place. For semantic reasons, I was
> > also changing the first assignment to ":=" from "+=".
> 
> I can resend them with the a small modification to the patch files if you want.

After looking at more of them, my "a lot" was a little bit of an
overstatement. The first few I randomly looked at happen to use the incorrect
pattern, but most are simple without relying on a variable. Yeah, I think you
should resubmit with a "[PATCH v2]." The pattern is:

ifeq ($(FOO),y)
     EXTRA_CFLAGS := <flags>
endif

changes to:

ccflags-$(FOO) := <flags>

Also, the rest of the kernel tree has been done except drivers/media; however, I
am going to email them in a little bit asking if some consolidation is possible
due to every driver there relying on a few flags. So thanks for the help (though
is was a good thing I was saving staging for last)!

-mfm

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