--- libsrc/geom2d/Makefile.am.orig	2014-08-29 09:54:06 UTC
+++ libsrc/geom2d/Makefile.am
@@ -1,6 +1,6 @@
 noinst_HEADERS = geom2dmesh.hpp geometry2d.hpp vsgeom2d.hpp 
 
-AM_CPPFLAGS = -I$(top_srcdir)/libsrc/include  $(TCL_INCLUDES)
+AM_CPPFLAGS = -I$(top_srcdir)/libsrc/include  $(TCL_INCLUDES) $(TK_INCLUDES)
 
 METASOURCES = AUTO