extern "C" {
#endif
+#include <features.h>
+
#include <signal.h>
#define __NEED_pid_t
int waitid (idtype_t, id_t, siginfo_t *, int);
pid_t waitpid (pid_t, int *, int );
-#ifdef _GNU_SOURCE
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#include <sys/resource.h>
pid_t wait3 (int *, int, struct rusage *);
pid_t wait4 (pid_t, int *, int, struct rusage *);