Index: src/sim/w_date.c
--- src/sim/w_date.c.orig
+++ src/sim/w_date.c
@@ -105,7 +105,10 @@ Tk_ConfigSpec DateConfigSpecs[] = {
 
 XDisplay *FindXDisplay();
 
+void DoUpdateDate(SimDate *date);
+void DoResizeDate(SimDate *date, int w, int h);
 
+
 static void
 DisplaySimDate(ClientData clientData)
 {
@@ -562,6 +565,7 @@ DestroyDate(SimDate *date)
 }
 
 
+void
 DoResizeDate(SimDate *date, int w, int h)
 {
   int resize = 0;
@@ -594,6 +598,7 @@ DoNewDate(SimDate *date)
 
 #define BORDER 1
 
+void
 DoUpdateDate(SimDate *date)
 {
   Display *dpy;
