linux-kernel - Re: [PATCH] Kbuild: Avoid DTB rebuilds if source files are untouched

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Message-ID: <516D7405.3060202@imgtec.com>
Date:	Tue, 16 Apr 2013 16:53:41 +0100
From:	James Hogan <james.hogan@...tec.com>
To:	Stephen Warren <swarren@...dotorg.org>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>
CC:	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Michal Marek <mmarek@...e.cz>,
	Stephen Warren <swarren@...dia.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	<linux-kbuild@...r.kernel.org>, Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH] Kbuild: Avoid DTB rebuilds if source files are untouched

On 12/04/13 22:52, Stephen Warren wrote:
> +.SECONDARY: $(obj)/$(builtindtb-y).dtb.S

Note, this may not work if you're using CONFIG_ARC_BUILTIN_DTB_NAME,
since it'll have quotes around it, so you may instead need:
.SECONDARY: $(obj)/$(patsubst "%",%,$(builtindtb-y)).dtb.S

(at least that's what's required for the metag equivalent)

> +
>  dtbs:  $(addprefix  $(obj)/, $(builtindtb-y).dtb)

You might find the same thing here too.

Cheers
James

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