linux-kernel - Re: [PATCH] perf tools: Fix 'No libunwind found' make warning message

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Date:	Wed, 22 Aug 2012 09:33:59 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>,
	Ben Hutchings <ben@...adent.org.uk>,
	Borislav Petkov <borislav.petkov@....com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	David Ahern <dsahern@...il.com>,
	Feng Tang <feng.tang@...el.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	Paul Mackerras <paulus@...ba.org>,
	Pekka Enberg <penberg@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Robert Richter <robert.richter@....com>,
	Sedat Dilek <sedat.dilek@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ulrich Drepper <drepper@...il.com>, arnaldo.melo@...il.com,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH] perf tools: Fix 'No libunwind found' make warning
 message

On Wed, 2012-08-22 at 10:40 +0200, Ingo Molnar wrote:
>  
> >  FLAGS_UNWIND=$(LIBUNWIND_CFLAGS) $(ALL_CFLAGS) $(LIBUNWIND_LDFLAGS) $(ALL_LDFLAGS) $(EXTLIBS) $(LIBUNWIND_LIBS)
> >  ifneq ($(call try-cc,$(SOURCE_LIBUNWIND),$(FLAGS_UNWIND)),y)
> > -	msg := $(warning No libunwind found. Please install libunwind >= 0.99);
> > +	msg := $(warning No libunwind found, disables post unwind support. Please install libunwind-dev[el] >= 0.99);
> 
> s/disables/disable

Is it a command for the user to do, or something it is about to do for
the user? If the latter, then "disabling" may be the better word.

-- Steve


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