--- ./libs/timer/src/CMakeLists.txt.orig       2012-01-14 19:54:13.284819760 +0100

+++ ./libs/timer/src/CMakeLists.txt    2012-01-14 19:08:41.078415730 +0100

@@ -11,4 +11,5 @@

   SHARED_COMPILE_FLAGS "-DBOOST_TIMER_DYN_LINK=1"

   STATIC_COMPILE_FLAGS "-DBOOST_TIMER_STATIC_LINK=1"

+  DEPENDS boost_system boost_chrono

 )

--- ./libs/chrono/src/CMakeLists.txt.orig	2012-01-14 19:06:46.825514697 +0100

+++ ./libs/chrono/src/CMakeLists.txt	2012-01-14 19:07:00.369740065 +0100

@@ -12,4 +12,5 @@

   SHARED_COMPILE_FLAGS "-DBOOST_CHRONO_DYN_LINK=1"

   STATIC_COMPILE_FLAGS "-DBOOST_CHRONO_STATIC_LINK=1"

+  DEPENDS boost_system

 )