linux-kernel - Re: [PATCH 0/2] tools: Add a toplevel Makefile

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Date:	Wed, 28 Mar 2012 19:57:01 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Michal Marek <mmarek@...e.cz>, Sam Ravnborg <sam@...nborg.org>
Cc:	Ingo Molnar <mingo@...nel.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] tools: Add a toplevel Makefile

On Wed, Mar 28, 2012 at 11:51:25AM +0200, Borislav Petkov wrote:
> I'm currently thinking I want to give the make tools/{perf,help,...}
> approach a try because it is clear that it is a subdir of the kernel src
> tree and it probably could support all the targets we thought about.
> 
> Let me play around with it a bit...

Yeah, nasty. I've almost got it to build a tool when doing

$ make tools/<toolname>

but it fails on all the targets which have implicit build rules. (It
seems to build perf fine though because perf Makefile doesn't have
implicit rules for %.c -> %.o etc). And I can see that implicit rules
are being cleared in the toplevel kernel Makefile so that they don't
kick in.

At this moment, I'm open for hints from the kbuild people, if we use the
toplevel Makefile to build tools/, should all the tools' Makefiles have
explicit rules or ...? Any suggestions are appreciated.

Thanks.

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
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