基于安装eda工具vcs的需要,特地记录ubuntu-18,gcc以及g++版本的降级4.4:
gcc -v
![](https://img.haomeiwen.com/i15518659/2cb622b725ca6b8d.png)
vim /etc/apt/sources.list
![](https://img.haomeiwen.com/i15518659/6cf00c5ac044aa85.png)
deb http://dk.archive.ubuntu.com/ubuntu/ trusty main universe
deb http://dk.archive.ubuntu.com/ubuntu/ trusty-updates main universe
![](https://img.haomeiwen.com/i15518659/3fca994a2335fafc.png)
sudo apt-get update
![](https://img.haomeiwen.com/i15518659/2b39b0cdc6d41b79.png)
apt-get install gcc-4.4
![](https://img.haomeiwen.com/i15518659/f710d7e71cd170de.png)
ls /usr/bin/gcc*
![](https://img.haomeiwen.com/i15518659/a78e044b2c9aa56f.png)
update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.4 100
![](https://img.haomeiwen.com/i15518659/e6fedc511a452ef3.png)
gcc -v
![](https://img.haomeiwen.com/i15518659/7fb71c67e0c17345.png)
同理安装g++
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