linux-kernel - Re: [PATCH] kselftest: replace $(RM) with rm -f command

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Message-ID: <1443520665.11041.1.camel@ellerman.id.au>
Date:	Tue, 29 Sep 2015 19:57:45 +1000
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	Wang Long <long.wanglong@...wei.com>, shuahkh@....samsung.com,
	dvhart@...radead.org, keescook@...omium.org, davem@...emloft.net,
	luto@...capital.net, wad@...omium.org,
	Andrew Morton <akpm@...ux-foundation.org>, gorcunov@...nvz.org,
	cov@...eaurora.org, bobby prani <bobby.prani@...il.com>,
	tyler baker <tyler.baker@...aro.org>,
	Tim Bird <tim.bird@...ymobile.com>, josh@...htriplett.org,
	Andrea Arcangeli <aarcange@...hat.com>,
	andrej skvortzov <andrej.skvortzov@...il.com>,
	sjayaram@...mai.com, treding@...dia.com,
	Ingo Molnar <mingo@...nel.org>,
	naresh kamboju <naresh.kamboju@...aro.org>,
	alexey kodanev <alexey.kodanev@...cle.com>,
	linux-api <linux-api@...r.kernel.org>,
	linux-kernel@...r.kernel.org, wanglong@...qinren.net
Subject: Re: [PATCH] kselftest: replace $(RM) with rm -f command

On Mon, 2015-09-28 at 03:16 +0000, Mathieu Desnoyers wrote:
> ----- On Sep 27, 2015, at 10:10 PM, Wang Long long.wanglong@...wei.com wrote:
> 
> > Some test's Makefile using "$(RM)" while the other's
> > using "rm -f". It is better to use one of them in all
> > tests.
> 
> I agree that this disparity appears to be unwanted. We
> should settle on one or the other.
> 
> > "rm -f" is better, because it is less magic, and everyone
> > konws what is does.
> 
> "$(RM)" is clearly defined as a Makefile implicit variable
> which defaults to "rm -f".
> Ref. https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html

Sure, but you had to look it up didn't you :) - I did.

> Leaving it as a variable is more flexible because then the
> default behavior can be overridden if need be, which is
> not the case of a hardcoded "rm -f".

But I don't think anyone actually wants to do that. Do they?

Anyway I don't really care either way, so I'm happy for you to do a patch that
uses $(RM). Or maybe Wang Long will be happy to respin his patch to use $(RM).

cheers


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