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Date: Mon, 14 Jan 2013 08:32:57 -0800
From: Randy Dunlap <rdunlap@infradead.org>
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Subject: Re: where is the build rule for kernel's subdirs?
References: <20130114043314.GA3968@debian.localdomain>
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To: horseriver <horserivers@gmail.com>
Cc: linux-kbuild@vger.kernel.org

On 01/13/13 20:33, horseriver wrote:
> hi:
> 
>    How does   kbuild   build objects for subdirs of kernel source ? 

It goes into subdirs recursively.


>From top-level Makefile:

# Objects we will link into vmlinux / subdirs we need to visit
init-y		:= init/
drivers-y	:= drivers/ sound/ firmware/
net-y		:= net/
libs-y		:= lib/
core-y		:= usr/


Then each subdir's Makefile has its own rules.

-- 
~Randy