1.更换镜像源
# 编辑镜像源文件
sudo vi /etc/apt/sources.list
# 写入以下内容
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
# 更新镜像源
sudo apt update
2.安装gcc
sudo apt install gcc
3.安装g++
sudo apt install g++
4.检查是否存在cmake
which cmake
# 如果显示路径说明包含cmake,需要移除
sudo apt-get remove cmake
5.下载cmake
# 下载网站 https://cmake.org/download/
wget 下载链接
6.解压
# 在cmake源码所在文件夹中打开命令终端，解压文件
tar -zxvf cmake-3.23.2.tar.gz
7.进入解压后的cmake文件进行检查
cd cmake-3.23.2
# 检查
./bootstrap
8.检查报错及解决方法
# 安装openssl系统
sudo apt-get install libssl-dev
# 再次检查
./bootstrap
9.编译构造
sudo make
10.安装
sudo make install
11.检查
# 查看cmake版本
cmake --version
# 查看cmake位置
which cmake
