linux-kernel - Re: trace-cmd: make Makefile rpm-friendly

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Date:	Mon, 19 Apr 2010 15:06:12 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	John Kacur <jkacur@...hat.com>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: trace-cmd: make Makefile rpm-friendly

On Mon, 2010-04-19 at 20:11 +0200, John Kacur wrote:
> 
> On Mon, 19 Apr 2010, Randy Dunlap wrote:
> 
> > From: Randy Dunlap <randy.dunlap@...cle.com>
> > 
> > Update Makefile to support rpmbuild DESTDIR usage.
> 
> So, what would happen if you did
> make DESTDIR=/usr/local install ?
> 
> I think you would get /usr/local/usr/local
> So, I think I would NAK this patch.
> 
> I also don't believe there is anything magical about DESTDIR in a spec 
> file. Essentially, prefix in this makefile is equivalent to DESTDIR, so 
> you can replace DESTDIR with prefix in a spec template.
>  

NAK is too strong. I was looking at what perf does, and it basically
makes prefix and DESTDIR the same.

ifndef DESTDIR
prefix = $(HOME)
endif

We could do..

ifndef DESDIR
prefix = /usr/local/bin
endif

and then, if DESTDIR is not set, it would do the right thing.

-- Steve


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