Index: CMakeLists.txt
===================================================================
--- a/CMakeLists.txt	(revision 1209280)
+++ b/CMakeLists.txt	(revision 1209281)
@@ -1,5 +1,7 @@
 project(blitz)
 
+cmake_minimum_required(VERSION 2.6.4)
+
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules )
 find_package(Qt4 REQUIRED)
 # properly set up compile flags (QT_DEBUG/QT_NO_DEBUG, ...)