qmake
qmake is a cross-platform build automation tool that comes with the Qt toolkit. It generates makefiles or other build inputs from a concise description of a project's sources and dependencies. Originating with Trolltech, qmake is now maintained by The Qt Company and the Qt community and remains a standard tool in many Qt projects for building on multiple platforms and compilers.
Projects are described in one or more .pro files (and optional .pri include files). A .pro file
Usage involves running qmake on a .pro file to generate a Makefile or another platform-specific build file,
Relation to the Qt ecosystem: qmake integrates with the Qt Creator IDE and supports multiple Qt versions.