由于64位下运行32编译器缺少相应的库文件，所以运行时会报错
./arm-none-eabi-gcc
bash: ./arm-none-eabi-gcc: No such file or directory
运行下面加载库文件的命令：
sudo apt-get install lib32ncurses5 lib32z1
就显示安装成功了，
由于64位下运行32编译器缺少相应的库文件，所以运行时会报错
./arm-none-eabi-gcc
bash: ./arm-none-eabi-gcc: No such file or directory
运行下面加载库文件的命令：
sudo apt-get install lib32ncurses5 lib32z1
就显示安装成功了，
![sudo apt-get update 出错 Updating from such a repository can‘t be done securely, and is therefore[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)