diff --git a/libobjc/config.h.in b/libobjc/config.h.in
new file mode 100644
index 00000000000..70427edaf6b
--- /dev/null
+++ b/libobjc/config.h.in
@@ -0,0 +1,2 @@
+/* Define this if you have the <sched.h> header file */
+#undef HAVE_SCHED_H