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Subject[PATCH 147/161] tools/perf/build: Fix non-existent build directory handling
Date
From: Ingo Molnar <mingo@kernel.org>

Arnaldo reported that non-existent build directories were not
recognized properly. The reason is readlink failure causing 'O'
to become empty.

Solve it by passing through the 'O' variable unmodified if
readlink fails.

Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20131009150023.GA10167@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 5aa3d040bbf3..914704495166 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -34,7 +34,7 @@ endif
# Only pass canonical directory names as the output directory:
#
ifneq ($(O),)
- FULL_O := $(shell readlink -f $(O))
+ FULL_O := $(shell readlink -f $(O) || echo $(O))
endif

define print_msg
--
1.8.1.4


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