https://wiki.qt.io/Install_Qt_5_on_Ubuntu
https://download.qt.io/official_releases/qt/
zyx@gisserver:~$ sudo vi /etc/profile
export PATH="/opt/software/Qt5.12.1/Tools/QtCreator/bin:$PATH"
qtcreator
https://wiki.qt.io/Install_Qt_5_on_Ubuntu
https://download.qt.io/official_releases/qt/
zyx@gisserver:~$ sudo vi /etc/profile
export PATH="/opt/software/Qt5.12.1/Tools/QtCreator/bin:$PATH"
qtcreator