XGBoost C++ API
Starting from 1.0 release, CMake will generate installation rules to export all C++ headers. Butthe c++ interface is much closer to the internal of XGBoost than other language bindings.As a result it’s changing quite often and we don’t maintain its stability. Along with theplugin system (seeplugin/example in XGBoost’s source tree), users can utilize someexisting c++ headers for gaining more access to the internal of XGBoost.