Install libgtkspell3-3-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libgtkspell3-3-dev
Description:
Development files for GtkSpell
This package contains the headers and static libraries for developing applications with GtkSpell support. Also included are documentation and example code for developing GtkSpell applications.
Homepage: http://gtkspell.sourceforge.net/
Version: 3.0.9-2
Section: universe/libdevel