--- MITgcm/optim/simul.F	2004/09/09 15:58:42	1.3
+++ MITgcm/optim/simul.F	2015/05/26 22:54:09	1.4
@@ -1,4 +1,5 @@
 
+#include "CTRL_OPTIONS.h"
 
       subroutine simul(
      I                  indic,