Install libfolks-dummy-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libfolks-dummy-dev
Description:
Dummy backend for libfolks - development files
libfolks is a library that aggregates people from multiple sources (eg, Telepathy connection managers and eventually evolution data server, Facebook, etc.) to create metacontacts. . This package contains the development files for libfolks dummy backend.
Homepage: https://wiki.gnome.org/Projects/Folks
Version: 0.11.4-1ubuntu1
Section: universe/libdevel