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From: Cong Wang <amwang@redhat.com>
To: Arnaud Lacombe <lacombar@gmail.com>
Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC] Kbuild: allow code re-use across different directories
Date: Mon, 22 Aug 2011 16:42:48 +0800	[thread overview]
Message-ID: <4E521688.1000701@redhat.com> (raw)
In-Reply-To: <1313800642-32418-1-git-send-email-lacombar@gmail.com>

于 2011年08月20日 08:37, Arnaud Lacombe 写道:
> Hi folks,
>
> The attached patch modify Kbuild to allow to directly re-use code in multiple
> directory without having to go through a copy. Technically, it changes Kbuild to
> use by default the VPATH feature of GNU make and provides accessors for Makefile
> to change it indirectly.
...
>
> With the attached patch, we would do:
>
> arch/foo/boot/Makefile:
> LDFLAGS_fancy.o := -DPANTS=30
> obj-y += fancy.o
> vpath-y += $(srctree)/arch/foo/lib
>
> and let GNU make do the job.

Just note that don't forget to update Documentation/kbuild/makefiles.txt. ;)

Thanks.

WARNING: multiple messages have this Message-ID (diff)
From: amwang@redhat.com (Cong Wang)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC] Kbuild: allow code re-use across different directories
Date: Mon, 22 Aug 2011 16:42:48 +0800	[thread overview]
Message-ID: <4E521688.1000701@redhat.com> (raw)
In-Reply-To: <1313800642-32418-1-git-send-email-lacombar@gmail.com>

? 2011?08?20? 08:37, Arnaud Lacombe ??:
> Hi folks,
>
> The attached patch modify Kbuild to allow to directly re-use code in multiple
> directory without having to go through a copy. Technically, it changes Kbuild to
> use by default the VPATH feature of GNU make and provides accessors for Makefile
> to change it indirectly.
...
>
> With the attached patch, we would do:
>
> arch/foo/boot/Makefile:
> LDFLAGS_fancy.o := -DPANTS=30
> obj-y += fancy.o
> vpath-y += $(srctree)/arch/foo/lib
>
> and let GNU make do the job.

Just note that don't forget to update Documentation/kbuild/makefiles.txt. ;)

Thanks.

  reply	other threads:[~2011-08-22  8:42 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-20  0:37 [RFC] Kbuild: allow code re-use across different directories Arnaud Lacombe
2011-08-20  0:37 ` Arnaud Lacombe
2011-08-22  8:42 ` Cong Wang [this message]
2011-08-22  8:42   ` Cong Wang
2011-08-30  0:31 ` Arnaud Lacombe
2011-08-30  0:31   ` Arnaud Lacombe
2011-08-30  4:32   ` Nicolas Pitre
2011-08-30  4:32     ` Nicolas Pitre
2011-08-30  4:36     ` Arnaud Lacombe
2011-08-30  4:36       ` Arnaud Lacombe
2011-09-07 19:07 ` Nicolas Pitre
2011-09-07 19:07   ` Nicolas Pitre
2011-09-07 19:34   ` Arnaud Lacombe
2011-09-07 19:34     ` Arnaud Lacombe
2011-09-07 19:59     ` Nicolas Pitre
2011-09-07 19:59       ` Nicolas Pitre
2011-09-07 20:52       ` Arnaud Lacombe
2011-09-07 20:52         ` Arnaud Lacombe
2011-09-08  4:50       ` Arnaud Lacombe
2011-09-08  4:50         ` Arnaud Lacombe
2011-09-08 20:33         ` Nicolas Pitre
2011-09-08 20:33           ` Nicolas Pitre
2011-09-09  1:22           ` Arnaud Lacombe
2011-09-09  1:22             ` Arnaud Lacombe
2011-09-09 12:32             ` Michal Marek
2011-09-09 12:32               ` Michal Marek
2011-09-09 16:16               ` Arnaud Lacombe
2011-09-09 16:16                 ` Arnaud Lacombe
2011-09-08 18:24 ` Arnaud Lacombe
2011-09-09 12:30 ` Michal Marek
2011-09-09 12:30   ` Michal Marek
2011-09-13 21:13   ` Arnaud Lacombe
2011-09-13 21:13     ` Arnaud Lacombe
2011-09-14  1:48     ` Michal Marek
2011-09-14  1:48       ` Michal Marek

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