1.使用APT库

#1卸载老版cmake
sudo apt remove --purge --auto-remove cmake
sudo apt purge --auto-remove cmake

#2获取密钥
wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | gpg --dearmor - | sudo tee /etc/apt/trusted.gpg.d/kitware.gpg >/dev/null

#3.添加库到/etc/apt/sources.list
#Ubuntu 20.04
sudo apt-add-repository 'deb https://apt.kitware.com/ubuntu/ focal main' 
#Ubuntu 18.04
sudo apt-add-repository 'deb https://apt.kitware.com/ubuntu/ bionic main' 
#Ubuntu 16.04
sudo apt-add-repository 'deb https://apt.kitware.com/ubuntu/ xenial main' 

#4.安装
sudo apt update
sudo apt install cmake

2.二进制文件安装(cmake-gui可能不工作)

#1卸载老版cmake
sudo apt remove --purge --auto-remove cmake
sudo apt purge --auto-remove cmake

#2下载版本
version=3.22
build=1
##don't modify from here
limit=3.20
result=$(echo "$version >= $limit" | bc -l)
os=$([ "$result" == 1 ] && echo "linux" || echo "Linux")
mkdir ~/temp
cd ~/temp
wget https://cmake.org/files/v$version/cmake-$version.$build-$os-x86_64.sh 
sudo mkdir /opt/cmake
sudo sh cmake-$version.$build-$os-x86_64.sh --prefix=/opt/cmake

#3创建软链接
sudo ln -s /opt/cmake/bin/cmake /usr/local/bin/cmake

3.从cmake官网安装

#1卸载老版cmake
sudo apt remove --purge --auto-remove cmake
sudo apt purge --auto-remove cmake

#2下载版本
version=3.22
build=1
##don't modify from here
mkdir ~/temp
cd ~/temp
wget https://cmake.org/files/v$version/cmake-$version.$build.tar.gz
tar -xzvf cmake-$version.$build.tar.gz
cd cmake-$version.$build/

#3.安装
./bootstrap
make -j$(nproc)
sudo make install

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