Cygwin doesn't actually provide a clock_settime symbol, although the

prototype is present in time.h so we supply our own that returns error.

src/libCom/osi/os/posix/osdTime.cpp

@@ -44,6 +44,14 @@
     } // extern "C"
 #endif
 
+#ifdef CYGWIN32
+int clock_settime(clockid_t clock, const timespec *tp)
+{
+    return -EFAULT;
+}
+#endif
+
+
 static int timeRegister(void)
 {
     TIME_INIT;