The build system of this library is CMake, the minimum supported version is 3.9

Once you installed CMake, you can open the CMakeLists.txt file with a recent version of QtCreator, alternatively you can open a terminal window with the C++ compiler and Qt environment set up. The procedure is platform dependant. On Windows MSVC, for example, it consist in calling vcvarsall.bat from the compiler folder and qtenv2.bat from the bin folder of Qt.

Now you can call CMake passing arguments to customise the build. The first choice is the generator. It is passed via the -G "Generator" argument You can find a list of generators in the CMake documentation; the most commonly used ones are -G "Unix Makefiles" on linux and macOS, -G "MinGW Makefiles" on Windows MinGW and -G "NMake Makefiles" on Windows MSVC. It's also advisable to create a "build" folder inside the downloaded source tree to separate the build artefacts from the original sources.

The next option is the build type, this is decided by passing the -DCMAKE_BUILD_TYPE=DEBUG or -DCMAKE_BUILD_TYPE=RELEASE argument. For the debug build you can also specify the -DCMAKE_DEBUG_POSTFIX=d or -DCMAKE_DEBUG_POSTFIX=_debug option to append d or _debug to the name of the built library.

The final almost-mandatory argument is -DCMAKE_INSTALL_PREFIX="path/to/installed/library" where you can specify the path where the library will be installed. Using, again, Windows MSVC as an example, a minimal CMake invocation would look like this: cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX="./installed" ../

You can also specify an number of arguments to customise the build even further:

Argument	Effect
`-DBUILD_SHARED_LIBS=ON`	Builds a dynamically linked library instead of a static one
`-DBUILD_TESTING=ON`	Compiles the unit tests included in the sources
`-DBUILD_EXAMPLES=ON`	Compiles the examples of use included in the sources
`-DNO_GUI=ON`	Disables all functionalities that require the QtGUI module. This option is automatically set if the module is not installed
`-DNO_WIDGETS=ON`	Disables all functionalities that require the QtWidgets module. This option is automatically set if the module is not installed
`-DBUILD_DOCS=OFF`	Disables the creation of the documentation in HTML format. This option is automatically set if Doxygen is not installed
`-DBUILD_ROLEMASKPROXY=OFF`	Exclude the Role Mask Proxy Model module of the library
`-DBUILD_MODELSERIALISATION=OFF`	Exclude the Model Serialisation module of the library
`-DBUILD_INSERTPROXY=OFF`	Exclude the Insert Proxy Model module of the library
`-DBUILD_GENERICMODEL=OFF`	Exclude the Generic Model module of the library
`-DBUILD_ROOTINDEXPROXY=OFF`	Exclude the Root Index Proxy Model module of the library
`-DOPTIMISE_FOR_MANY_ROLES=ON`	Some of the models are optimised so that they work best if every cell in the model holds no more than around 20 different roles. This is in line with how Qt's native models are optimised. If you plan to store more roles per cell you can enable this option to improve performance
`-DTEST_OUTPUT_XML=ON`	This is mainly used by the CI. If this option is set, the tests will generate an xml file with results rather than printing them to the console

After running CMake you can call cmake --build . to compile the project. You can call cmake --build . --target test or ctest to run the unit tests. Finally you can call cmake --build . --target install to install the library in the destination specified by -DCMAKE_INSTALL_PREFIX=.