Installation of QT learning

1. Download address ：
   http://download.qt.io/archive/qt/
   ubuntu 32 Bit download ：qt-opensource-linux-x86-5.4.1.run
   ubuntu 64 Bit download ：qt-opensource-linux-x64-5.4.1.run

   ubuntu18.04 It is recommended to download Qt The latest version of ：
   qt-opensource-linux-x64-5.11.2.run

2. Run setup
   bash Next ./qt-opensourse-linux-x86-5.4.1.run
   notes ： According to the prompt , It is installed in the home directory by default

3. Environment variable configuration (PATH)
   Ideas ： take Qt The path of the relevant executable program is added to PATH in
   The specific path may be different , Modify according to the specific situation
   /home/cjl/Qt5.4.1/5.4/gcc/bin
   /home/cjl/Qt5.4.1/Tools/QtCreator/bin
   sudo vi /etc/environment

4. Restart the system test
   perform “qmake -v” Normal to see Qt Version information for
   perform “qtcreator” Normally, you can enter Qt Integrated development environment interface

5. problem ： Tip the lack of libgstreamer… Correlation Library
   solve ： Online installation
   sudo apt-get install libgstreamer0.10-0
   sudo apt-get install libgstreamer-plugins-base0.10-0
    
   problem ： compile Qt Program prompt missing libgl… Correlation Library ( No installation openGL)
   solve ： Online installation
   sudo apt-get install libgl1-mesa-dev