Sorry if this is a known issue. --Nick Compiling "nodelet" I get the following error: [ 80%] Building CXX object CMakeFiles/nodeletlib.dir/src/nodelet_class.o In file included from /Users/nick/ros/stacks/common/nodelet/src/nodelet_class.cpp:32: /Users/nick/ros/stacks/common/nodelet/include/nodelet/detail/callback_queue_manager.h:125: error: overflow in array dimension /Users/nick/ros/stacks/common/nodelet/include/nodelet/detail/callback_queue_manager.h:125: error: size of array ‘pad’ is too large make[3]: *** [CMakeFiles/nodeletlib.dir/src/nodelet_class.o] Error 1 make[2]: *** [CMakeFiles/nodeletlib.dir/all] Error 2 make[1]: *** [all] Error 2 make: *** [all] Error 2 Here is the line for the header file. It looks like there is possibly some unsigned integer underflow going on. Presumably sizeof(V_Queue)+sizeof(boost::mutex) is greater than 64. // Pad to then next cache line // TODO: magic number uint8_t pad[64 - sizeof(V_Queue) - sizeof(boost::mutex)];