1、下载cmake版本3.18

wget -O cmake-3.18.2.tar.gz https://github.com/Kitware/CMake/releases/download/v3.18.2/cmake-3.18.2.tar.gz

2、解压cmake

tar zxvf cmake-3.18.2.tar.gz

3、进入cmake进行编译

cd cmake-3.18.2

4、配置cmake

./bootstrap

5、make

make

6、make install

make install

7、软链接

sudo update-alternatives --install /usr/bin/cmake cmake /usr/local/bin/cmake 1 --force

出现一下提示
update-alternatives: using /usr/local/bin/cmake to provide /usr/bin/cmake (cmake) in auto mode

如果没有执行第7步，查看cmake版本，会出现如下

执行cmake -version后，

CMake Error: Could not find CMAKE_ROOT !!!
CMake has most likely not been installed correctly.
Modules directory not found in
/usr/local/share/cmake-3.10
cmake version 3.10.2

执行第7步后

执行cmake -version后，

cmake version 3.18.2