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-rw-r--r--include/ouroboros/endian.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/ouroboros/endian.h b/include/ouroboros/endian.h
index 4738159e..16200028 100644
--- a/include/ouroboros/endian.h
+++ b/include/ouroboros/endian.h
@@ -26,9 +26,15 @@
#if defined(__linux__) || defined(__CYGWIN__)
+#ifndef _BSD_SOURCE
#define _BSD_SOURCE
+#endif
+#ifndef __USE_BSD
#define __USE_BSD
+#endif
+#ifndef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE
+#endif
#include <endian.h>
#include <features.h>