Install kadu-dev by entering the following commands in the terminal:
sudo apt update sudo apt install kadu-dev
Description:
Development files needed to compile plugins for kadu
Gadu-Gadu is a Windows instant messenger, very popular in Poland. Kadu is a Qt5 client of Gadu-Gadu and XMPP for *nix systems. . This package provides development files needed to compile plugins for Kadu.
Homepage: http://kadu.net
Version: 4.1-1.1
Section: universe/net