diff -r 77d16a5dc779 Modules/posixmodule.c
--- a/Modules/posixmodule.c	Sat Jul 30 14:14:12 2016 +0300
+++ b/Modules/posixmodule.c	Sat Jul 30 17:46:36 2016 +0200
@@ -12938,9 +12938,15 @@
 #endif
 
 #ifdef HAVE_SCHED_H
+#ifdef SCHED_OTHER
     if (PyModule_AddIntMacro(m, SCHED_OTHER)) return -1;
+#endif
+#ifdef SCHED_FIFO
     if (PyModule_AddIntMacro(m, SCHED_FIFO)) return -1;
+#endif
+#ifdef SCHED_RR
     if (PyModule_AddIntMacro(m, SCHED_RR)) return -1;
+#endif
 #ifdef SCHED_SPORADIC
     if (PyModule_AddIntMacro(m, SCHED_SPORADIC) return -1;
 #endif