diff -rup boost_1_42_0.orig/Jamroot boost_1_42_0/Jamroot
--- boost_1_42_0.orig/Jamroot	2010-04-03 00:03:31.722603669 +0200
+++ boost_1_42_0/Jamroot	2010-04-03 00:44:38.038115479 +0200
@@ -355,9 +355,7 @@ rule tag ( name : type ? : property-set
         if $(layout) = versioned
         {
             result = [ common.format-name
-                <base> <toolset> <threading> <runtime> -$(BOOST_VERSION_TAG)
-                -$(BUILD_ID)
-                : $(name) : $(type) : $(property-set) ] ;
+                <base> <runtime> : $(name) : $(type) : $(property-set) ] ;
         }        
         else if $(layout) = tagged
         {
@@ -505,13 +503,9 @@ if $(layout-versioned) && ( [ modules.pe
         return $(result) ;
     }
 
-    generate stage-unversioned : stage-proper :
-        <generating-rule>@make-unversioned-links ;
-    explicit stage-unversioned ;
-
-    generate install-unversioned : install-proper :
-        <generating-rule>@make-unversioned-links ;
-    explicit install-unversioned ;
+    # Create do-nothing aliases.
+    alias stage-unversioned ;
+    alias install-unversioned ;
 }
 else
 {