linux-kernel - Re: [PATCH 28/28] perf tools: Add udis86 disassembler feature check

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Date:	Thu, 5 Dec 2013 09:05:14 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	linux-kernel@...r.kernel.org,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 28/28] perf tools: Add udis86 disassembler feature check

On Wed, Dec 04, 2013 at 03:50:24PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Tue, Dec 03, 2013 at 02:09:42PM +0100, Jiri Olsa escreveu:
> > Adding udis86 disassembler feature check which support
> > is needed for kvm:kvm_emulate_insn tracepoint.
> >  
> > +$(call feature_check,udis86)
> > +ifeq ($(feature-udis86), 1)
> > +  LIBTRACEEVENT_CFLAGS += -DHAVE_UDIS86
> > +  EXTLIBS += -ludis86
> > +else
> > +  msg := $(warning No udis86 support.);
> > +endif
> 
> That is really an incomplete message, what package should I install?
> Perhaps we should add this there then:
> 
> http://bit.ly/1hyrN52

nice :-)

> 
> Wow, that was easy, but yeah, could be made easier 8-) ;-P

so something like:
No udis86 found. Please install udis86-devel.

or:
No udis86 found, disabling kvm tracepoints instruction disassembly. Please install udis86-devel.

jirka
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