The reference sections describe in detail the variables and functions that are available for use in qmake project files.
Variables describes the variables that are recognized by qmake when configuring the build process for projects.
There are two types of qmake functions: replace functions and test functions. Replace functions return a value list, while test functions return a boolean result. The functions are implemented in two places: fundamental functionality is offered as built-in functions. More complex functions are implemented in a library of feature files (.prf).
The functions are divided into categories according to their type: