--- /trunk_root/gnulib/lib/sched.in.h	2017-06-01 07:48:48 -0500
+++ /vms_root/gnulib/lib/sched.in.h	2017-06-19 08:07:31 -0500
@@ -45,6 +45,11 @@
 
 #endif
 
+#ifdef __VMS
+/* On VMS, struct sched_param is in pthread.h. */
+# include <pthread.h>
+#endif
+
 #if address@hidden@
 
 # if !GNULIB_defined_struct_sched_param