--- ray/src/common/calexpr.c	1992/11/22 11:53:36	2.11
+++ ray/src/common/calexpr.c	1993/03/05 15:14:00	2.12
@@ -41,7 +41,10 @@ extern char  *fgets(), *savestr();
 extern char  *emalloc(), *ecalloc();
 extern EPNODE  *curfunc;
 extern double  efunc(), evariable();
-static double  euminus(), echannel(), eargument(), enumber();
+static double  euminus(), eargument(), enumber();
+#ifdef  INCHAN
+static double  echannel();
+#endif
 static double  eadd(), esubtr(), emult(), edivi(), epow();
 static double  ebotch();