diff -u -r1.9 -r1.10
--- geant4.m4	11 Dec 2008 00:44:32 -0000	1.9
+++ geant4.m4	27 Oct 2009 19:45:17 -0000	1.10
@@ -118,6 +118,9 @@

   G4VIS_USE_RAYTRACERX=1
 fi
 

+# Config verbose setting.  No verbose means better performance.
+AC_ENABLE_G4VERBOSE
+

 # Variable substitutions.
 AC_SUBST(G4SYSTEM)
 AC_SUBST(G4INSTALL)