--- ./ghc-events.cabal.orig	2012-01-14 03:14:39.000000000 +0100
+++ ./ghc-events.cabal	2012-01-21 14:21:48.000000000 +0100
@@ -40,7 +40,7 @@
                     GHC.RTS.Events.Analysis.Thread
   other-modules:    GHC.RTS.EventParserUtils,
                     GHC.RTS.EventTypes
-  extensions:	    RecordWildCards, NamedFieldPuns, BangPatterns, PatternGuards
+  extensions:	    CPP, RecordWildCards, NamedFieldPuns, BangPatterns, PatternGuards
 
 executable ghc-events
   main-is:          GhcEvents.hs