1. git clone
2. Install dependencies

The solution is
sudo apt-get install libxkbcommon-x11-dev
3. The compilation
   

cd Pangolin
mkdir build
cd build
cmake ..
cmake --build .

Pangolin: I tried to reinstall Pangolin because the pictures I drew with Pangolin kept flashing, so I used Locate to find the SO shared library. After deleting Pangolin, I reinstalled Pangolin. After compiling, I had to make install Pangolin to successfully generate SO files. However, after reloading the drawing is still flashing, I don’t know why. If anyone knows, I’d appreciate it if you could leave me a message