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-rw-r--r--common/usuals.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/common/usuals.h b/common/usuals.h
index d09fd72..5bd7b98 100644
--- a/common/usuals.h
+++ b/common/usuals.h
@@ -20,6 +20,8 @@
#ifndef __USUALS_H__20000613
#define __USUALS_H__20000613
+#define _GNU_SOURCE
+
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>