support _BSD_SOURCE feature test macro

[musl] / include / sys / wait.h

diff --git a/include/sys/wait.h b/include/sys/wait.h
index e73594a..5e3012b 100644 (file)
--- a/include/sys/wait.h
+++ b/include/sys/wait.h
@@ -17,7 +17,7 @@ pid_t wait (int *);
 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 *);