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-rw-r--r--signal/sigsetops.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/signal/sigsetops.c b/signal/sigsetops.c
index 9a3a834..0317662 100644
--- a/signal/sigsetops.c
+++ b/signal/sigsetops.c
@@ -1,6 +1,11 @@
/* Define the real-function versions of all inline functions
defined in signal.h (or bits/sigset.h). */
+#include <features.h>
+
#define _EXTERN_INLINE
+#ifndef __USE_EXTERN_INLINES
+# define __USE_EXTERN_INLINES 1
+#endif
#include "signal.h"