linux-kernel - Re: [PATCH V2] kbuild: add %/built-in.o target in top Makefile

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Date:   Mon, 28 Nov 2016 22:06:26 +0000
From:   Wei Yang <richard.weiyang@...il.com>
To:     Wei Yang <richard.weiyang@...il.com>
Cc:     mmarek@...e.com, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] kbuild: add %/built-in.o target in top Makefile

Hi ~

On Sun, Nov 06, 2016 at 10:18:32PM +0000, Wei Yang wrote:
>Current kbuild just supports building built-in.o in second directory level
>individually. There is no rule to build those built-in.o targets below
>third directory level.
>
>Even current kbuild system could achieve this with rule "%/", while this
>not only builds built-in targes but also lib target, extra target and
>module objects.
>
>This patch adds the "%/built-in.o" rule so that each built-in.o in the
>kernel tree could be the build target, which looks more consistent for the
>kbuild system.
>
>Signed-off-by: Wei Yang <richard.weiyang@...il.com>
>
>---
>v2
>    . add FORCE in prerequest
>
>---
> Makefile | 2 ++
> 1 file changed, 2 insertions(+)
>
>diff --git a/Makefile b/Makefile
>index f97f786..9c65498 100644
>--- a/Makefile
>+++ b/Makefile
>@@ -1638,6 +1638,8 @@ endif
> 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> %.symtypes: %.c prepare scripts FORCE
> 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
>+%/built-in.o: prepare scripts FORCE
>+	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
> 
> # Modules
> /: prepare scripts FORCE
>-- 
>2.5.0

-- 
Wei Yang
Help you, Help me