On Thursday 08 April 2010 00:46:59 Wim Meeussen wrote: > Ros users, > > We just released robot_model 1.1.0. This is an _unstable_ development > branch to prepare new features for the next ROS distribution. The most > exciting new feature is the URDF to COLLADA > conversion tool. For more details, check out the stack documentation > and change list > . When i try to compile collada_urdf i get the following linking error: Linking CXX executable ../bin/urdf_to_collada /usr/bin/ld: CMakeFiles/urdf_to_collada.dir/src/urdf_to_collada.o: in function __static_initialization_and_destruction_0(int, int):/usr/include/boost/system/error_code.hpp:205: error: undefined reference to 'boost::system::get_system_category()' /usr/bin/ld: CMakeFiles/urdf_to_collada.dir/src/urdf_to_collada.o: in function __static_initialization_and_destruction_0(int, int):/usr/include/boost/system/error_code.hpp:206: error: undefined reference to 'boost::system::get_generic_category()' /usr/bin/ld: CMakeFiles/urdf_to_collada.dir/src/urdf_to_collada.o: in function __static_initialization_and_destruction_0(int, int):/usr/include/boost/system/error_code.hpp:211: error: undefined reference to 'boost::system::get_generic_category()' /usr/bin/ld: CMakeFiles/urdf_to_collada.dir/src/urdf_to_collada.o: in function __static_initialization_and_destruction_0(int, int):/usr/include/boost/system/error_code.hpp:212: error: undefined reference to 'boost::system::get_generic_category()' /usr/bin/ld: CMakeFiles/urdf_to_collada.dir/src/urdf_to_collada.o: in function __static_initialization_and_destruction_0(int, int):/usr/include/boost/system/error_code.hpp:213: error: undefined reference to 'boost::system::get_system_category()' collect2: ld returned 1 exit status I'm using the gold linker, but i dont see any -lboost_system added to the linker command. Should this be exported by the colladadom package? Adding rosbuild_link_boost(urdf_to_collada system filesystem) to the CMakeLists.txt of collada_urdf fixes the problem, but I don't think this is what you want? Ruben > Wim