How To Install flexc++ on Ubuntu 22.04
Introduction
In this tutorial we learn how to install flexc++ on Ubuntu 22.04.
What is flexc++
flexc++ is:
Flexc++ was designed after `flex’. Flexc++ offers as compared to flex’s C++ option a cleaner class-design.
Flexc++ generates a scanner class that is ready for use, as well as a member function producing the lexical scanner tokens (lex()). The class can easily be provided with additional members without the need for polymorphic functions. Consequently, classes generated by flexc++ have no virtual members and actually have but one public member: lex(), replacing the old-style flex and flex++ yylex() function.
Flexc++ offers many options, among which an option to define classes generated by flexc++ in a separate namespace. This allows developers to define additional symbols, even outside of the class generated by flexc++, without encountering name-collision problems. With flexc++, artificial means to prevent name-collisions, like the yy-conventions used by flex and flex++ are no longer required. Flexc++ generates C++ code. If C code is required, flex should be used. Flexc++’s grammar requirements are highly compatible with flex’s requirements, so converting a flex grammar into a flexc++ grammar should be fairly simple.
In addition to the flexc++ scanner generator itself and several skeleton files, the package contains an extensive man-page, as well as a full manual rewritten after the original flex manual, and several examples.
There are three methods to install flexc++ on Ubuntu 22.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install flexc++ Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install flexc++ using apt-get by running the following command:
sudo apt-get -y install flexc++
Install flexc++ Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install flexc++ using apt by running the following command:
sudo apt -y install flexc++
Install flexc++ 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 Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install flexc++ using aptitude by running the following command:
sudo aptitude -y install flexc++
How To Uninstall flexc++ on Ubuntu 22.04
To uninstall only the flexc++ package we can use the following command:
sudo apt-get remove flexc++
Uninstall flexc++ And Its Dependencies
To uninstall flexc++ and its dependencies that are no longer needed by Ubuntu 22.04, we can use the command below:
sudo apt-get -y autoremove flexc++
Remove flexc++ Configurations and Data
To remove flexc++ configuration and data from Ubuntu 22.04 we can use the following command:
sudo apt-get -y purge flexc++
Remove flexc++ configuration, data, and all of its dependencies
We can use the following command to remove flexc++ configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge flexc++
References
Summary
In this tutorial we learn how to install flexc++ package on Ubuntu 22.04 using different package management tools: apt, apt-get and aptitude.
