Install libgtkada16.1.0-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libgtkada16.1.0-dev
Description:
Ada binding for the GTK+ GUI (development files)
GtkAda is a library that allows programmers to write GTK+ applications in the Ada programming language. . This package contains the development files and static libraries.
Homepage: http://libre.adacore.com/libre/tools/gtkada
Version: 17.0.2017-2
Section: universe/libdevel