更换源→更换树莓派的源←安装依赖sudo apt-get update && sudo apt-get upgrade sudo apt-get install build-essential cmake pkg-config -y sudo apt-get install libjpeg-dev libtiff5-dev libjasper-dev libpng-dev -y sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev -y sudo apt-get install libxvidcore-dev libx264-dev -y sudo apt-get install libfontconfig1-dev libcairo2-dev -y sudo apt-get install libgdk-pixbuf2.0-dev libpango1.0-dev -y sudo apt-get install libgtk2.0-dev libgtk-3-dev -y
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