Install libexo-1-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libexo-1-dev
Description:
Development files for libexo (GTK-2 version)
libexo is a library for Xfce that contains a bunch of additional widgets and a framework for editable toolbars (an improved version of the framework present in GNOME), light-weight session management support, functions to automatically synchronize object properties (based on GObject Binding Properties) and several miscellaneous utility and helper functions for application developers. . This package contains the headers and the static library for libexo-1-0.
Homepage: http://www.xfce.org
Version: 0.12.0-1
Section: universe/libdevel