--- Makefile.in	Tue Oct  7 07:55:21 1997
+++ Makefile.in	Mon Nov 24 00:13:27 1997
@@ -19,7 +19,7 @@
 # Include directives needed to compile with Tcl & Tk, and
 # -DTCL if Tcl is available, and
 # -DTK if Tk is available.
-TCLTK_FLAGS = @TCLTKFLAGS@
+TCLTK_FLAGS = @TCLTKFLAGS@ -I/usr/X11R6/include
 
 # Libraries needed to link with GNU readline
 RLLIBS = @RLLIBS@