Install kdesdk by entering the following commands in the terminal:
sudo apt update sudo apt install kdesdk
Description:
Software Development Kit from the official KDE release
KDE is produced by an international technology team that creates free and open source software for desktop and portable computing. Among KDE's products are a modern desktop system for Linux and UNIX platforms, comprehensive office productivity and groupware suites and hundreds of software titles in many categories including Internet and web applications, multimedia, entertainment, educational, graphics and software development. . This metapackage includes software development applications provided with the official release of KDE.
Homepage: http://www.kde.org
Version: 4:17.08.3+5.100ubuntu2
Section: universe/metapackages