Install fp-units-gtk2 by entering the following commands in the terminal:
sudo apt update sudo apt install fp-units-gtk2
Description:
Free Pascal - GTK+ 2.x units dependency package
The Free Pascal Compiler is an Object Pascal compiler supporting both Delphi and Turbo Pascal 7.0 dialects, as well as Mac Pascal dialects. It provides a completely portable RunTime Library (RTL) available on many platforms and compatible with Turbo Pascal, along with a platform-independent class-based Free Component Library (FCL) adding many Delphi extensions and interfacing with many popular open source libraries. . This dependency package always depends on the latest available version of the package containing Free Pascal units and examples to create programs with GTK+ 2.x.
Homepage: https://www.freepascal.org/
Version: 3.0.4+dfsg-18
Section: universe/devel