This project provides C++ wrapper classes around some components of esp-idf. It is organized as a component for the IDF component manager. You can find this component in the component registry.
This component is in a beta-release phase. Some bits that are still missing (non-exhaustive list):
A road map and detailed release document will be announced soon.
No other special requirements are necessary.
Set up the IDF environment (i.e., . ./export.sh inside esp-idf). Then go to your project directory, use idf.py add-dependency espressif/esp-idf-cxx^1.0.0-beta (should only be done once) and you should be able to use this component.