linux-kernel - Re: [PATCH -tip] perf probe: Check older elfutils and set NO

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Message-ID: <20100511104108.GK6450@erda.amd.com>
Date:	Tue, 11 May 2010 12:41:08 +0200
From:	Robert Richter <robert.richter@....com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip] perf probe: Check older elfutils and set NO_DWARF

On 11.05.10 00:59:53, Masami Hiramatsu wrote:
> Check whether elfutils is older than 0.138 (from which version checking
> routine has been introduced). And if so, set NO_DWARF because it is hard
> to check the API dependency without version checking.

This works for me, now the DWARF_SUPPORT macro is undefined and a
warning is generated:

Makefile:510: No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev

Thanks,

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@....com

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