linux-kernel - Re: [PATCH] pinctrl: pass -DDEBUG in subdirs

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Date:	Sat, 10 Jan 2015 22:46:51 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Yingjoe Chen <yingjoe.chen@...iatek.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH] pinctrl: pass -DDEBUG in subdirs

On Fri, Jan 9, 2015 at 11:22 AM, Yingjoe Chen <yingjoe.chen@...iatek.com> wrote:
>
> On Fri, 2015-01-09 at 10:41 +0100, Linus Walleij wrote:
>> When drivers are compiled in subdirectories the -DDEBUG flag need
>> to be passed in the individual Makefiles.
>
> Hi,
>
> It will be easy to forget adding this when adding new subdirectories.
> Can we do this instead?
(...)
> -ccflags-$(CONFIG_DEBUG_PINCTRL)        += -DDEBUG
> +subdir-ccflags-$(CONFIG_DEBUG_PINCTRL) += -DDEBUG

Yeah of course :/

subdir-ccflags applies to this subdir and all below it then I take it.
Typical I don't know such stuff :(

Yours,
Linus Walleij
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