--- samples/benchsimple/CMakeLists.txt.orig	2013-08-04 12:21:54.850147165 +0200
+++ samples/benchsimple/CMakeLists.txt	2013-08-04 12:22:17.696646898 +0200
@@ -23,4 +23,4 @@
 link_directories (${LuxRays_LIB_DIR})
 
 add_executable(benchsimple benchsimple.cpp)
-target_link_libraries(benchsimple luxrays)
+target_link_libraries(benchsimple luxrays pthread)