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-rw-r--r--tools/perf/util/header.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index e3861ae62172..59eeb4a32ac5 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -115,6 +115,8 @@ struct perf_session;
struct perf_tool;
union perf_event;
+extern const char perf_version_string[];
+
int perf_session__read_header(struct perf_session *session, int repipe_fd);
int perf_session__write_header(struct perf_session *session,
struct evlist *evlist,