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From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Jason Cooper <jason@lakedaemon.net>,
	Michal Marek <mmarek@suse.cz>,
	Grant Likely <grant.likely@secretlab.ca>,
	Rob Herring <rob.herring@linaro.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] ARM: kbuild: Fix forced rebuild after 'make dtbs'
Date: Wed, 26 Nov 2014 14:41:53 +0000	[thread overview]
Message-ID: <20141126144153.GK3836@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <CACRpkdZJoWbQeuZ4ZXGbQr0+SNG_9ZA+cQkAA0C2F9rnZDYtyQ@mail.gmail.com>

On Wed, Nov 26, 2014 at 02:57:42PM +0100, Linus Walleij wrote:
> make -f Makefile -j5 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
> KBUILD_OUTPUT=build-u300 u300_defconfig
> make -f Makefile -j5 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
> KBUILD_OUTPUT=build-u300 zImage CONFIG_DEBUG_SECTION_MISMATCH=y
> make -f Makefile -j5 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
> KBUILD_OUTPUT=build-u300 dtbs
> make -f Makefile -j5 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
> KBUILD_OUTPUT=build-u300 zImage CONFIG_DEBUG_SECTION_MISMATCH=y
> 
> -> Rebuilds everything.
> 
> This doesn't occur before the offending commit. So it only happens
> when specifying extra environment variables on the command line.

I suspect if you also provide the CONFIG_DEBUG_SECTION_MISMATCH=y on the
dtbs line, everything will work properly.

The problem is that dtbs line executes a prepare, which I guess rebuilds
the bounds stuff.  So, the dtbs target results in it being rebuilt without
the section mismatch, and then you re-execute a make with it, causing
the bounds stuff to be rebuilt again.

-- 
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.

  reply	other threads:[~2014-11-26 14:42 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-01 10:15 [git pull] Devicetree changes for v3.15 Grant Likely
2014-04-01 19:42 ` Paul Bolle
2014-04-01 20:18   ` Rob Herring
2014-04-01 20:34     ` Paul Bolle
2014-04-01 20:32   ` Grant Likely
2014-04-01 20:39     ` Grant Likely
2014-04-01 20:46     ` Paul Bolle
2014-09-26 12:30 ` Linus Walleij
2014-09-26 14:19   ` Jason Cooper
2014-09-29  8:52     ` Linus Walleij
2014-10-27 15:39       ` Linus Walleij
2014-11-02 20:52         ` [PATCH] ARM: kbuild: Fix forced rebuild after 'make dtbs' Jason Cooper
2014-11-25 21:41           ` Michal Marek
2014-11-25 23:51             ` Russell King - ARM Linux
2014-11-26  0:57               ` Jason Cooper
2014-11-26 13:57                 ` Linus Walleij
2014-11-26 14:41                   ` Russell King - ARM Linux [this message]
2014-11-28 14:10                     ` Linus Walleij
2014-12-01 13:55                       ` Michal Marek
2014-12-04 11:22                         ` Grant Likely
2014-12-04 11:24                           ` Russell King - ARM Linux
2014-11-26  9:39               ` Michal Marek
2014-09-29 12:49     ` [git pull] Devicetree changes for v3.15 Grant Likely
2014-09-29 13:52       ` Jason Cooper

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