linux-kernel - Re: [PATCH trace-cmd 3/3] Revert "trace-cmd: Use conditional assignment of CC and AR"

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Message-ID: <4D782986.5040500@linux.intel.com>
Date:	Wed, 09 Mar 2011 17:29:42 -0800
From:	Darren Hart <dvhart@...ux.intel.com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	David Sharp <dhsharp@...gle.com>, linux-kernel@...r.kernel.org,
	mrubin@...gle.com
Subject: Re: [PATCH trace-cmd 3/3] Revert "trace-cmd: Use conditional assignment
 of CC and AR"

On 03/09/2011 05:28 PM, Steven Rostedt wrote:
> On Wed, 2011-03-09 at 20:21 -0500, Steven Rostedt wrote:
>> On Wed, 2011-03-09 at 15:58 -0800, David Sharp wrote:
>>> This reverts commit 6c696cec3f264a9399241b6e648f58bc97117d49.
>>>
>>> Make has default values CC and AR of 'cc' and 'ar' respectively. This means
>>> that "CC ?= anything" will never have effect, because CC is always already set.
>>> Because of this, 6c696cec makes setting CROSS_COMPILE from the command line or
>>> environment useless.
>>
>> Darren, can you verify this, as you were the one to make the original
>> change. I never had to cross compile it, I always did it natively.
>
> OK, I just proved that David is correct, with the following make file:
>
> ---
> CC ?= foo
> AR ?= bar
> all:
> 	echo what is $(CC) $(AR)

> ---
>
> $ make
> what is cc ar
>
>
> Darren, can you just give an Acked-by anyway. I hate to apply a revert
> of your patch without you doing so.

I really thought I tested that - clearly not :/ Sorry about that. Please 
see my response to David for an alternate proposal.

--
Darren

>
> Thanks,
>
> -- Steve
>
>


-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel
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