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Date: Sun, 30 Jun 2013 17:02:03 +0800
From: =?utf-8?B?5byg5b+g5bGx?= <zzs0213@gmail.com>
To: Michal Marek <mmarek@suse.cz>
Cc: linux-kbuild <linux-kbuild@vger.kernel.org>,
        lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] let kbuild mkdir for dir/file.o
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	linux-kbuild <linux-kbuild@vger.kernel.org>,
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> >  # $(obj-dirs) is a list of directories that contain object files
> > -obj-dirs := $(dir $(multi-objs) $(subdir-obj-y))
> > +__subdir-obj-y := $(foreach o,$(obj-y),$(if $(filter-out $(o),$(notdir $(o))),$(o)))
>
> This complicated filter returns entries from $(obj-y) that contain a
> slash, is that correct? If so, is it really necessary? Why not simply
> add whole $(obj-y) to $(obj-dirs) and be done? $(multi-objs) is also
> added without any filtering.
>
> > +obj-dirs := $(dir $(multi-objs) $(__subdir-obj-y))

Yes, You are right.
It is enough that just add $(obj-y) to $(obj-dirs) directly.
I will resend the patch.

-- 
Best Regards,
zzs