# apt install build-essential
配置编译工具链
到Linaro下载gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu.tar.xz ,解压到/opt
# tar xvf gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu.tar.xz -C /opt
将/opt/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin 添加到PATH中
$ export PATH=$PATH:/opt/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin
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