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-rw-r--r--include/local-def.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/local-def.h b/include/local-def.h
index 5deca987..8fe87d0c 100644
--- a/include/local-def.h
+++ b/include/local-def.h
@@ -19,7 +19,9 @@
*/
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+ #define _GNU_SOURCE
+#endif
#include <stdio.h>
#include <stdlib.h>