All, I am attempting to add some code out of personal interest to fake_localization. I have: 1) Downloaded the source 2) Adjusted my $ROS_PACKAGE_PATH to first point to my fake_localization instead of the /opt/ros/hydro - roscd fake_localization takes me to my source 3) rosmake fake_localization = complains about ROS_NOBUILD 4) find /opt/ros -iname '*ROS_NOBUILD*' 5) find /home/me/workspace -iname '*ROS_NOBUILD*' There are no ROS_NOBUILD files anywhere. I can't find any documentation explaining where else ROS_NOBUILD would exist. Or any instructions on how to recompile the supplied packages from source. Could anyone offer any advice? Thank you. Constantin