What is CMake:

CMake is an open-source, and the CMake can support cross-platform family of tools designed to build, test and package software. This is used to control the software compilation process using simple platform and compiler independent configuration files, generate native makefiles and workspaces that can be used in the compiler environment. 

When trying to install the obs-pulseaudio-app-capture package in my Ubuntu machine received an error like  Command 'cmake' not found, but can be installed with.

Just execute the command,

$ sudo apt  install cmake


Check your CMake version using the command below,

$ cmake --version



cmake version 3.22.1

CMake suite maintained and supported by Kitware (kitware.com/cmake).


After that I used the same command again, seems to be working fine.

​$ cmake ..