ubuntu20.04 安装 arm-linux-gcc 发生错误:libpng3 : Depends: libpng12-0 (>= 1.2.5.0-2) but it is not installed
解决方法：
sudo add-apt-repository ppa:linuxuprising/libpng12 | |
sudo apt update | |
sudo apt list --upgradable | |
sudo apt --fix-broken install | |
sudo apt install gcc-arm-linux-gnueabi |
