--- a/browsercore/core/core.pro	Wed Jun 23 17:59:43 2010 +0300
+++ b/browsercore/core/core.pro	Tue Jul 06 14:03:49 2010 +0300
@@ -127,6 +127,11 @@
     unix : contains(QT_CONFIG, reduce_relocations): CONFIG += bsymbolic_functions
 }
 
+contains(br_tiled_backing_store, yes) {
+    DEFINES += BEDROCK_TILED_BACKING_STORE
+}
+
+
 CONFIG -= warn_on
 *-g++* : QMAKE_CXXFLAGS += -Wreturn-type -fno-strict-aliasing