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-rw-r--r--libnet/include/win32/libnet.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libnet/include/win32/libnet.h b/libnet/include/win32/libnet.h
index bd28f21..9a6f8b2 100644
--- a/libnet/include/win32/libnet.h
+++ b/libnet/include/win32/libnet.h
@@ -84,7 +84,9 @@ extern "C" {
/* To use Win32 native versions */
#define WPCAP 1
+#ifndef _GNU_SOURCE
#define _GNU_SOURCE
+#endif
#include <stdio.h>
#include <string.h>
#include <fcntl.h>