要在Ubuntu 16.04 32位系统上安装一个特定版本的CMake(如cmake-2.8.9),并且不干扰系统中已经安装的较新版本的CMake,你可以考虑以下步骤:
cmake-2.8.9-Linux-i386.tar.gz文件。
cmake-2.8.9-Linux-i386.tar.gz
tar -zxvf cmake-2.8.9-Linux-i386.tar.gz
解压后,你可以选择一个目录来安装这个版本的CMake,例如/opt/cmake-2.8.9。这样可以避免与系统中其他版本的CMake冲突。
我先用apt purge cmake卸载掉已有cmake:

你可以使用以下命令移动解压后的文件夹到/opt目录:
sudo mv cmake-2.8.9-Linux-i386 /opt/cmake-2.8.9

/opt/cmake-2.8.9/bin/cmake
.bashrc文件中添加一个别名,这样就可以通过一个简单的命令来调用它(注意:我是在root用户下调用它的):echo 'alias cmake="/opt/cmake-2.8.9/bin/cmake"' >> ~/.bashrc
source ~/.bashrc

这样,每次你在终端输入cmake2.8时,就会调用这个特定版本的CMake。
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