先去官网http://www.cmake.org/files查看所需版本，

例如下面，我要换成3.27.8版本

mv /usr/bin/cmake /usr/bin/cmake.backup
wget http://www.cmake.org/files/v3.27/cmake-3.27.8.tar.gz
tar zxf cmake-3.27.8.tar.gz
cd cmake-3.27.8
./configure
make && make install
ln -sf /usr/local/bin/cmake /usr/bin/cmake