From: mmarek@suse•cz (Michal Marek)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] ARM: kbuild: Fix forced rebuild after 'make dtbs'
Date: Mon, 01 Dec 2014 14:55:48 +0100 [thread overview]
Message-ID: <547C7364.8000009@suse.cz> (raw)
In-Reply-To: <CACRpkdYwQT3+RLxP_b_kYJoHV4L7sZ7yiU=JZWVq_zHKz0EY_g@mail.gmail.com>
On 2014-11-28 15:10, Linus Walleij wrote:
> On Wed, Nov 26, 2014 at 3:41 PM, Russell King - ARM Linux
> <linux@arm•linux.org.uk> wrote:
>> 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.
>
> Yay, it works! :)
>
>> 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.
>
> Yep. Not very intuitive to require passing section mismatch debug
> flags to DTB rebuilding but whatever, it's not so bad I can't live with
> it.
Still, the dependency on the 'prepare' target is superfluous, if the
only requirement is that $(KERNELRELEASE) be set properly.
Michal
next prev parent reply other threads:[~2014-12-01 13:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CACRpkdYmJWy1_vs0tWRA7SvkQnvbXXKqf7pHpH5b5tZ6vR+KJg@mail.gmail.com>
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
2014-11-28 14:10 ` Linus Walleij
2014-12-01 13:55 ` Michal Marek [this message]
2014-12-04 11:22 ` Grant Likely
2014-12-04 11:24 ` Russell King - ARM Linux
2014-11-26 9:39 ` Michal Marek
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