--- Makefile.orig	Sun Sep 24 18:33:49 2000
+++ Makefile	Sun Sep 24 18:34:49 2000
@@ -21,7 +21,7 @@
 # Include machine/platform specific information
 include machdef.mk
 
-CFLAGS=-I. $(TCL_INCLUDE) $(X_INCLUDE) $(OPTIONS) $(MACHINESPEC)
+CFLAGS+=-I. $(TCL_INCLUDE) ${TK_INCLUDE} $(X_INCLUDE) $(OPTIONS) $(MACHINESPEC)
 
 OBJECTS = \
 	e93.o \