when I input the command below in Cygwin
cd ~/ardupilot/ArduCopter
make sitl -j2
there are some errors occur as below show
mk: No such file or directory
make: *** 没有规则可制作目标“/home/Administrator/ardupilot/modules/uavcan/libuavcan/include.mk”。 停止。
who can tell me why and how to solve this problem? Thanks very much.