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-rw-r--r--include/features.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/features.h b/include/features.h
index e890edebe..b7dfd21c5 100644
--- a/include/features.h
+++ b/include/features.h
@@ -41,6 +41,7 @@
#define __USE_BSD
#define __USE_MISC
#define __USE_POSIX
+#define __USE_POSIX2
#define _POSIX_THREAD_SAFE_FUNCTIONS
#include <sys/cdefs.h>