-foreach(x lmm_usage surf_usage surf_usage2 wifi_usage)
+foreach(x lmm_usage surf_usage surf_usage2 wifi_usage wifi_usage_decay)
add_executable (${x} EXCLUDE_FROM_ALL ${x}/${x}.cpp)
target_link_libraries(${x} simgrid)
set_target_properties(${x} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${x})