Install libgail-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libgail-dev
Description:
GNOME Accessibility Implementation Library -- development files
Gail implements ATK interfaces for GTK+ widgets which are dynamically loadable at runtime by a GTK+ application. Once loaded, those parts of an application that use standard GTK+ widgets will have a basic level of accessibility, without the need to modify the application at all. . This package contains the development files for Gail.
Homepage: http://www.gtk.org/
Version: 2.24.32-1ubuntu1
Section: libdevel