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Message-Id: <1452276186-15202-18-git-send-email-acme@kernel.org>
Date:	Fri,  8 Jan 2016 15:02:24 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
	David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Zefan Li <lizefan@...wei.com>, pi3orama <pi3orama@....com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 17/59] tools build feature: Introduce feature_assign macro

From: Jiri Olsa <jolsa@...nel.org>

The feature_assign macro generates feature value
assignment for name, like:

  $(call feature_assign,dwarf) == feature-dwarf=1

This will be used more in following patches.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Tested-by: Wang Nan <wangnan0@...wei.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Zefan Li <lizefan@...wei.com>
Cc: pi3orama <pi3orama@....com>
Link: http://lkml.kernel.org/r/1450893514-9158-4-git-send-email-jolsa@kernel.org
[ Rename it to feature_assign, the original shorter name was misleading, to say the least ;-) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/build/Makefile.feature | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 20753124c8f4..b1b262eb5bea 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -122,8 +122,14 @@ define feature_print_text_code
     MSG = $(shell printf '...%30s: %s' $(1) $(2))
 endef
 
+#
+# generates feature value assignment for name, like:
+#   $(call feature_assign,dwarf) == feature-dwarf=1
+#
+feature_assign = feature-$(1)=$(feature-$(1))
+
 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
-FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),feature-$(feat)($(feature-$(feat))))
+FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),$(call feature_assign,$(feat)))
 FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
 
 # The $(feature_display) controls the default detection message
-- 
2.1.0

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