刚测试210用户手册上面的摄像头例程时，输入source bt命令后出现下面的文字：
[root@localhost usbcamera_demo]# source bt
bash: ../../arm-qtopia/qtopia-2.2.0-FriendlyARM/setQpeEnv: No such file or directory
bash: qmake: command not found
make: Makefile.target: No such file or directory
make: *** No rule to make target `Makefile.target'. Stop.
make: Makefile.target: No such file or directory
make: *** No rule to make target `Makefile.target'. Stop.
是知道是什么原因，完全是参考用户手册和随机光盘来做的？？？
