# 3.7 龙芯编译环境配置

1.下载龙芯提供的编译环境配置压缩包gcc-4.3-ls232.tar.gz（[http://os.cs.tsinghua.edu.cn/oscourse/project/LoongsonCsprj2018）](http://os.cs.tsinghua.edu.cn/oscourse/project/LoongsonCsprj2018%EF%BC%89)

2.输入如下指令，将其加压至根目录

sudo tar -zxvf gcc-4.3-ls232.tar.gz -C /

3.打开home目录下的bashrc文件添加路径（没找着的话就在edit处将 show hidden file开启）找到export PATH = $PATH 这行，如果没有就在文件尾部新建

在末尾加上 gcc-4.3-ls232的路径，即 :/opt/gcc-4.3-ls232/bin

也可以通过命令添加路径 echo "export PATH=/opt/gcc-4.3-ls232/bin:$PATH" >> \~/.bashrc

4.对于64位系统还需要安装lsb-core，输入如下指令

sudo apt-get install lsb-core

完成上述工作后如果可以输入 mipsel-linux-gcc -v 命令，如果可以正确查看版本号则说明配置正确，编写一个test.s文件，使用如下命令编译mispel-linux-as test.s，得到a.out，mipsel-linux-objdump -d a.out 反编译，若上述步骤都走通，则编译环境配置成功。

对于lsb-core，如果安装失败。

输入如下指令

sudo dpkg --add-architecture i386

sudo apt-get update

sudo apt-get -f install lsb-core


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