linux-kernel - [PATCH] perf tools: Remove annoying extra message from the features build

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Message-ID: <20150228081750.GA31887@gmail.com>
Date:	Sat, 28 Feb 2015 09:17:50 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	linux-kernel@...r.kernel.org, David Ahern <david.ahern@...cle.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH] perf tools: Remove annoying extra message from the features
 build

This message:

  Makefile:153: The path 'python-config' is not executable.

Appears on every perf build that does not have a sufficient python 
environment installed. It's really just an internal detail of python 
configuration pass and users should not see it - and it's pretty 
meaningless to them in any case because the message is not very 
helpful. (So it's not executable. Why does that matter? What can the 
user do about it?)

Remove the warning, the missing python feature warning is sufficient:

  config/Makefile:566: No python-config tool was found
  config/Makefile:566: Python support will not be built

although even that one isn't very helpful to users: so no Python 
support will be built, what can the user do to fix that? Most other 
such warnings give package install suggestions.

Signed-off-by: Ingo Molnar <mingo@...nel.org>

diff --git a/tools/perf/config/utilities.mak b/tools/perf/config/utilities.mak
index 7076a62d0ff7..c16ce833079c 100644
--- a/tools/perf/config/utilities.mak
+++ b/tools/perf/config/utilities.mak
@@ -175,6 +175,5 @@ _ge-abspath = $(if $(is-executable),$(1))
 define get-executable-or-default
 $(if $($(1)),$(call _ge_attempt,$($(1)),$(1)),$(call _ge_attempt,$(2)))
 endef
-_ge_attempt = $(if $(get-executable),$(get-executable),$(_gea_warn)$(call _gea_err,$(2)))
-_gea_warn = $(warning The path '$(1)' is not executable.)
+_ge_attempt = $(if $(get-executable),$(get-executable),$(call _gea_err,$(2)))
 _gea_err  = $(if $(1),$(error Please set '$(1)' appropriately))
--
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