Install libclxclient-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libclxclient-dev
Description:
X Window System C++ access library (development files)
C++ wrapper library around the X Window System API. X Window System C++ access library. . This package provides the development headers.
Homepage: http://kokkinizita.linuxaudio.org/linuxaudio/
Version: 3.9.0-4ubuntu1
Section: universe/devel