Install xserver-xorg-input-synaptics-dev by entering the following commands in the terminal:
sudo apt update sudo apt install xserver-xorg-input-synaptics-dev
Description:
Synaptics TouchPad driver for X.Org server (development headers)
This package contains the development headers for the Synaptics input driver found in xserver-xorg-input-synaptics. Non-developers likely have little use for this package.
Version: 1.9.0-1ubuntu1
Section: universe/libdevel