--- elmer-6.0.5452/front/include/ecif_userinterface_TCL.h.orig	2011-11-18 16:06:43.387674999 -0200
+++ elmer-6.0.5452/front/include/ecif_userinterface_TCL.h	2011-11-18 16:06:57.944698287 -0200
@@ -42,8 +42,10 @@ Abstract:   A class for TCL based userin
 // Win32 and X
 // Tcl and Stl (list variable argument in tcl.h)
 #include "ecif_def.h"
+#define USE_INTERP_RESULT		1
 #include <tcl.h>
 #include <tk.h>
+#undef USE_INTERP_RESULT
 #include "ecif_def_stl.h"
 //***END NOTE
 
--- elmer-6.0.5452/post/src/ElmerPost.c.orig	2011-11-18 16:07:13.930725051 -0200
+++ elmer-6.0.5452/post/src/ElmerPost.c	2011-11-18 16:07:28.440750388 -0200
@@ -47,6 +47,7 @@
 #include "elmerpost.h"
 #include "../config.h"
 
+#define USE_INTERP_RESULT		1
 #include <tcl.h>
 #include <tk.h>
 
--- elmer-6.0.5452/post/src/modules/matctcl.c.orig	2011-11-18 16:07:47.898785875 -0200
+++ elmer-6.0.5452/post/src/modules/matctcl.c	2011-11-18 16:07:57.272803573 -0200
@@ -61,6 +61,7 @@
  */
 
 #include "../elmerpost.h"
+#define USE_INTERP_RESULT		1
 #include <tcl.h>
 #include <tk.h>
 
--- elmer-6.0.5452/post/src/modules/readfile.c.orig	2011-11-18 16:08:21.786851635 -0200
+++ elmer-6.0.5452/post/src/modules/readfile.c	2011-11-18 16:08:23.840855777 -0200
@@ -46,6 +46,7 @@
 
 
 #include "../elmerpost.h"
+#define USE_INTERP_RESULT		1
 #include <tcl.h>
 
 extern double XMin,XMax,YMin,YMax,ZMin,ZMax;
--- elmer-6.0.5452/post/src/modules/transforms.c.orig	2011-11-18 16:08:40.098889165 -0200
+++ elmer-6.0.5452/post/src/modules/transforms.c	2011-11-18 16:08:47.519904760 -0200
@@ -61,6 +61,7 @@
 
 #include "../elmerpost.h"
 
+#define USE_INTERP_RESULT		1
 #include <tcl.h>
 #include <tk.h>
 
--- elmer-6.0.5452/post/src/screensave.c.orig	2011-11-18 16:09:00.986933606 -0200
+++ elmer-6.0.5452/post/src/screensave.c	2011-11-18 16:09:09.255951663 -0200
@@ -32,6 +32,7 @@
 #include <GL/glu.h>
 
 
+#define USE_INTERP_RESULT		1
 #include "tcl.h"
 
 #if !(defined(WIN32) || defined(win32))