diff -r 89e29e22d479 -r fc6c7aab4b8d lemon/glpk.h
--- a/lemon/glpk.h	Sun Mar 01 07:10:49 2009 +0000
+++ b/lemon/glpk.h	Wed Mar 04 13:43:05 2009 +0000
@@ -100,6 +100,18 @@
 
     virtual void _clear();
 
+  private:
+
+    static void freeEnv();
+
+    struct FreeEnvHelper {
+      ~FreeEnvHelper() {
+        freeEnv();
+      }
+    };
+    
+    static FreeEnvHelper freeEnvHelper;
+    
   public:
 
     ///Pointer to the underlying GLPK data structure.