Install libdmx-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libdmx-dev
Description:
X11 Distributed Multihead extension library (development headers)
libdmx is an interface to the DMX extension for X, which allows a single server to be set up as a proxy spanning multiple servers -- not unlike Xinerama across discrete physical machines. It can be reconfigured on the fly to change the layout, and it is presented as a single logical display to clients. . libdmx allows clients to configure the layout of DMX servers by adding and removing screens, input devices, et al. . This package contains the development headers for the library found in libdmx1. Non-developers likely have little use for this package. . More information about X.Org can be found at:
Version: 1:1.1.3-1
Section: libdevel