linux-kernel - [PATCH 2/5] tools build feature: Move dwarf post unwind choice output into perf

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Date:	Wed, 23 Dec 2015 18:58:31 +0100
From:	Jiri Olsa <jolsa@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Wang Nan <wangnan0@...wei.com>, pi3orama <pi3orama@....com>,
	lizefan@...wei.com
Subject: [PATCH 2/5] tools build feature: Move dwarf post unwind choice output into perf

We decide what dwarf unwind to choose way after Makefile.feature
makefile is included. The $(dwarf-post-unwind) is not even set at
that time. For the same reason it was never included in FEATURE-DUMP
file.

Moving it into perf VF=1 verbose display.

  $ make VF=1
    BUILD:   Doing 'make -j4' parallel build
  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...
  ...                 LIBUNWIND_DIR:
  ...                     LIBDW_DIR:
  ...     DWARF post unwind library: libunwind
  ...

Link: http://lkml.kernel.org/n/tip-w6zxacvh4e59sp3rhxqs6btl@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/build/Makefile.feature | 9 ---------
 tools/perf/config/Makefile   | 4 ++++
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index a8b4befdef7e..20753124c8f4 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -126,10 +126,6 @@ FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
 FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),feature-$(feat)($(feature-$(feat))))
 FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
 
-ifeq ($(dwarf-post-unwind),1)
-  FEATURE_DUMP += dwarf-post-unwind($(dwarf-post-unwind-text))
-endif
-
 # The $(feature_display) controls the default detection message
 # output. It's set if:
 # - detected features differes from stored features from
@@ -160,11 +156,6 @@ ifeq ($(feature_display),1)
   $(info )
   $(info Auto-detecting system features:)
   $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
-
-  ifeq ($(dwarf-post-unwind),1)
-    $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
-  endif
-
   ifneq ($(feature_verbose),1)
     $(info )
   endif
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index a5524179d26e..18b2f96d0941 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -751,6 +751,10 @@ ifeq ($(VF),1)
   $(call print_var,sysconfdir)
   $(call print_var,LIBUNWIND_DIR)
   $(call print_var,LIBDW_DIR)
+
+  ifeq ($(dwarf-post-unwind),1)
+    $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
+  endif
   $(info )
 endif
 
-- 
2.4.3

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