diff -Nurd -x'*~' octave-@OCTVERSION@.orig/src/DLD-FUNCTIONS/__glpk__.cc octave-@OCTVERSION@/src/DLD-FUNCTIONS/__glpk__.cc
--- octave-@OCTVERSION@.orig/src/DLD-FUNCTIONS/__glpk__.cc	2009-01-16 01:46:23.000000000 -0500
+++ octave-@OCTVERSION@/src/DLD-FUNCTIONS/__glpk__.cc	2010-10-15 17:50:25.000000000 -0400
@@ -59,8 +59,20 @@
 
 #else
 
-void _glp_lib_print_hook (int (*func)(void *info, char *buf), void *info);
-void _glp_lib_fault_hook (int (*func)(void *info, char *buf), void *info);
+void _glp_lib_print_hook (int (*func)(void *info, char *buf), void *info)
+{ /* stolen from glpk-4.26 */
+      int (*hook)(void *, const char *) = (int(*)(void *, const char *))
+         (func);
+      glp_term_hook(hook, info);
+      return;
+}
+
+void _glp_lib_fault_hook (int (*func)(void *info, char *buf), void *info)
+{ /* stolen from glpk-4.26 */
+      assert(func == func);
+      assert(info == info);
+      return;
+}
 
 #endif
 }