linux-kernel - Re: [PATCH 5/5] perf: add Makefile.deps for easier cross compiling

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Message-ID: <20151013105028.GA3628@axis.com>
Date:	Tue, 13 Oct 2015 12:50:29 +0200
From:	Rabin Vincent <rabin.vincent@...s.com>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/5] perf: add Makefile.deps for easier cross compiling

On Mon, Oct 12, 2015 at 01:42:29PM +0200, Jiri Olsa wrote:
> On Sun, Sep 27, 2015 at 08:37:59PM +0200, Rabin Vincent wrote:
> > In order to make it easier for people to qucikly get up and running with
> > a fairly full featured cross-compiled mainline perf, provide a
> > Makefile.deps which will download and build the required libraries,
> > which can then be used in a static build of perf:
> > 
> >  $ make ARCH=arm CROSS_COMPILE=arm-linux- -f Makefile.deps
> 
> Makefile.cross_compile or Makefile.cross might suit better

OK, I will change it to Makefile.cross.

> Could you provide more details help/doc on how to use it
> and what it's actualy doing?

I will add comments to the file with this information.

> running the command from changelog failed on my setup,
> please check attached log

Looks like you don't have a compiler with the name arm-linux-gcc in your
PATH?  The CROSS_COMPILE flag has the same meaning as in the perf and
kernel builds: it's the prefix for a cross-toolchain which is available
on the host.
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