How To Install lcl-qt4 on Debian 9
Introduction
In this tutorial we learn how to install lcl-qt4 on Debian 9.
What is lcl-qt4
lcl-qt4 is:
Lazarus is an IDE to create (graphical and console) applications with Free Pascal, the (L)GPLed Pascal and Object Pascal compiler that runs on Windows, Linux, Mac OS X, FreeBSD and more.
Lazarus is the missing part of the puzzle that will allow you to develop programs for all of the above platforms in a Delphi-like environment. The IDE is a RAD tool that includes a form designer.
Unlike Java’s “write once, run anywhere” motto, Lazarus and Free Pascal strive for “write once, compile anywhere”. Since the exact same compiler is available on all of the above platforms you don’t need to do any recoding to produce identical products for different platforms.
In short, Lazarus is a free RAD tool for Free Pascal using its Lazarus Component Library (LCL).
This dependency package always depends on the latest available version of the package containing the part of the LCL for developing Qt applications.
There are three methods to install lcl-qt4 on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install lcl-qt4 Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install lcl-qt4 using apt-get by running the following command:
sudo apt-get -y install lcl-qt4
Install lcl-qt4 Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install lcl-qt4 using apt by running the following command:
sudo apt -y install lcl-qt4
Install lcl-qt4 Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install lcl-qt4 using aptitude by running the following command:
sudo aptitude -y install lcl-qt4
How To Uninstall lcl-qt4 on Debian 9
To uninstall only the lcl-qt4 package we can use the following command:
sudo apt-get remove lcl-qt4
Uninstall lcl-qt4 And Its Dependencies
To uninstall lcl-qt4 and its dependencies that are no longer needed by Debian 9, we can use the command below:
sudo apt-get -y autoremove lcl-qt4
Remove lcl-qt4 Configurations and Data
To remove lcl-qt4 configuration and data from Debian 9 we can use the following command:
sudo apt-get -y purge lcl-qt4
Remove lcl-qt4 configuration, data, and all of its dependencies
We can use the following command to remove lcl-qt4 configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge lcl-qt4
Dependencies
lcl-qt4 have the following dependencies:
References
Summary
In this tutorial we learn how to install lcl-qt4 package on Debian 9 using different package management tools: apt, apt-get and aptitude.