—– [100%] Building CXX object modules/python2/CMakeFiles/opencv_python2.dir/__/src2/cv2.cpp.o [100%] Building CXX object modules/python3/CMakeFiles/opencv_python3.dir/__/src2/cv2.cpp.o -> when running like in the up indication wait over 20 min. 上みたいな表示が出る場合20分間以上待機します — how to run turtle-sim (turtle simの動かし方):
roscore sudo apt-get install ros-kinetic-turtlesim -> package not found rosrun turtlesim turtlesim_node
rosrun after running roscore “IN A NEW TERMINAL” roscoreを動かした後、「新しい端末で」、rosrunします。