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Date:	Mon,  4 Oct 2010 15:54:41 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Kusanagi Kouichi <slash@...auone-net.jp>,
	Bernd Petrovitsch <bernd@...prog.at>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 1/3] perf tools: Fix build breakage

From: Kusanagi Kouichi <slash@...auone-net.jp>

The patch ecafda6 introduced a problem where all object files would be
always rebuilt, fix it by using:

http://www.gnu.org/software/make/manual/html_node/Prerequisite-Types.html

Reported-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Bernd Petrovitsch <bernd@...prog.at>
Signed-off-by: Kusanagi Kouichi <slash@...auone-net.jp>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/Makefile |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 4f1fa77..1950e19 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -1017,7 +1017,7 @@ builtin-revert.o wt-status.o: wt-status.h
 # we compile into subdirectories. if the target directory is not the source directory, they might not exists. So
 # we depend the various files onto their directories.
 DIRECTORY_DEPS = $(LIB_OBJS) $(BUILTIN_OBJS) $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h
-$(DIRECTORY_DEPS): $(sort $(dir $(DIRECTORY_DEPS)))
+$(DIRECTORY_DEPS): | $(sort $(dir $(DIRECTORY_DEPS)))
 # In the second step, we make a rule to actually create these directories
 $(sort $(dir $(DIRECTORY_DEPS))):
 	$(QUIET_MKDIR)$(MKDIR) -p $@ 2>/dev/null
-- 
1.6.2.5

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