[PATCH 1/2] perf tools: Guard _GNU_SOURCE in pmu-events/jevents.c

[Tony Jones]

Guard _GNU_SOURCE (as done in pt-decoder/intel-pt-decoder.c) to prevent 
possible redefinition error.

Signed-off-by: Tony Jones <tonyj@xxxxxxx>
---
 tools/perf/pmu-events/jevents.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index baa073f38334..b6300e875b87 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -1,5 +1,7 @@
 #define  _XOPEN_SOURCE 500	/* needed for nftw() */
+#ifndef  _GNU_SOURCE
 #define  _GNU_SOURCE		/* needed for asprintf() */
+#endif
 
 /* Parse event JSON files */
 
-- 
2.11.0