--- html/hints/bsdsunix.orig	2017-01-15 05:42:49 UTC
+++ html/hints/bsdsunix
@@ -0,0 +1,15 @@
+If you are compiling under BSDSUniX and see messages in the syslogs that
+indicate that the ntpd process is trying to use unavailable sched_
+calls, it means you are running a kernel that does not have the POSIX
+scheduling calls enabled.
+
+You have two choices:
+
+- Ignore the messages
+
+- Generate a new kernel, where the kernel configuration file contains
+  the lines:
+
+  options		"P1003_1B"
+  options		"_KPOSIX_PRIORITY_SCHEDULING"
+  options		"_KPOSIX_VERSION=199309L"