配置国内ubuntu源
编辑/etc/apt/sources.list文件, 在文件最前面添加以下条目(操作前做好相应备份)
cpp
cd /etc/apt
sudo cp sources.list sources.list.bak
sudo gedit sources.list增加阿里云，在source.list文件开头增加如下内容
cpp
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse
deb-src 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-backports main restricted universe multiverse保存并更新
sudo apt update
sudo apt upgrade安装编译环境
sudo apt install gcc-10 g++-10 build-essential git dkms下载驱动源码
git clone https://github.com/brektrou/rtl8821CU.git编译安装
进入项目目录rtl8821CU后开始编译安装
cd rtl8821CU
sudo ./dkms-install.sh下载cmake3.16.6：https://download.csdn.net/download/qq_46107892/87517469
解压缩:
tar -zxvf cmake-3.16.6-linux-x86_64.tar.gz配置环境变量
sudo gedit /etc/profile编辑/etc/profile文件, 在文件末尾加2行：
export CMAKE_HOME=/home/youzhu/Anzen/cmake-3.16.6-Linux-x86_64/bin
export PATH=$CMAKE_HOME:$PATH刷新环境变量：
source /etc/profile验证是否能执行CMake
cmake --version安装源码cmake3.16.6
在/usr/src/目录下新建cmake目录，cd /usr/src/cmake/，将源码下载到此目录，之后都在该目录下操作。
将压缩包解压
tar xf cmake-3.16.6.tar.gz修改文件夹权限
sudo chmod -R 777 cmake-3.16.6进入解压缩的cmake-3.16.6目录 cd cmake-3.16.6
安装build依赖包
sudo apt-get install build-essential
sudo apt-get install libssl-dev执行
./bootstrap执行
sudo make -j4
sudo make install 下载：Pangolin
https://github.com/stevenlovegrove/Pangolin/tree/v0.5
安装依赖包：OpenGL，Glew
sudo apt install libgl1-mesa-dev
sudo apt install libglew-dev创建build文件夹，cd到该目录中
mkdir build && cd buildcmake分析源代码
cmake ..报错提示
Could NOT find OpenGL (missing: OPENGL_opengl_LIBRARY OPENGL_glx_LIBRARY
OPENGL_INCLUDE_DIR)
则需要安装：
sudo apt-fast install libgl1-mesa-devmake编译源代码
sudo make -j4make install安装
sudo make install编译完成后可以测试一下
cd examples/HelloPangolin
./HelloPangolin