下載安裝源文件：gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.tar
下載地址：
http://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/aarch64-linux-gnu/
拷貝到/home/username/ARM/toolchain下解壓
環境變量配置
修改home文件夾下的 .bashrc添加如下代碼
export PATH="/home/username/ARM/toolchain/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu/bin:$PATH"
保存後退出
激活新環境
source ./bashrc
檢查環境變量
方法一：
echo $PATH
可以看到path路徑
方法二：
aa雙擊tab後出現
aarch64-linux-gnu-addr2line aarch64-linux-gnu-gcov-dump
aarch64-linux-gnu-ar aarch64-linux-gnu-gcov-tool
aarch64-linux-gnu-as aarch64-linux-gnu-gcov-tool-5
aarch64-linux-gnu-c++ aarch64-linux-gnu-gdb
aarch64-linux-gnu-c++filt aarch64-linux-gnu-gfortran
aarch64-linux-gnu-cpp aarch64-linux-gnu-gprof
aarch64-linux-gnu-cpp-5 aarch64-linux-gnu-ld
aarch64-linux-gnu-dwp aarch64-linux-gnu-ld.bfd
aarch64-linux-gnu-elfedit aarch64-linux-gnu-ld.gold
aarch64-linux-gnu-g++ aarch64-linux-gnu-nm
aarch64-linux-gnu-g+±5 aarch64-linux-gnu-objcopy
aarch64-linux-gnu-gcc aarch64-linux-gnu-objdump
aarch64-linux-gnu-gcc-5 aarch64-linux-gnu-pkg-config
aarch64-linux-gnu-gcc-7.3.1 aarch64-linux-gnu-ranlib
aarch64-linux-gnu-gcc-ar aarch64-linux-gnu-readelf
aarch64-linux-gnu-gcc-ar-5 aarch64-linux-gnu-size
aarch64-linux-gnu-gcc-nm aarch64-linux-gnu-strings
aarch64-linux-gnu-gcc-nm-5 aarch64-linux-gnu-strip
aarch64-linux-gnu-gcc-ranlib aa-remove-unknown
說明環境配置OK
aarch64-linux-gnu-gcc -v #查看安裝版本