/* For timeradd, timersub, timercmp, realpath. */
#define _BSD_SOURCE 1 /* for glibc < 2.19 */
#define _DEFAULT_SOURCE 1 /* for glibc >= 2.20 */
+/* For clock_gettime and associated types. */
+#define _POSIX_C_SOURCE 199309L
#endif
#include <string.h>