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-rw-r--r--tools/bpf/bpftool/xlated_dumper.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/xlated_dumper.c b/tools/bpf/bpftool/xlated_dumper.c
index 2d9cd6a7b3c8..6fe3134ae45d 100644
--- a/tools/bpf/bpftool/xlated_dumper.c
+++ b/tools/bpf/bpftool/xlated_dumper.c
@@ -1,7 +1,9 @@
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2018 Netronome Systems, Inc. */
+#ifndef _GNU_SOURCE
#define _GNU_SOURCE
+#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>