This repository has a C++ implemntation of the WOFOST crop growth simulation model, and a R package that provides a convenient user-interface to that implementation.
You can install the R package from CRAN with install.packages("Rwofost")
To install the development version you can do
install.packages("meteor")
remotes::install_github("cropmodels/Rwofost")
Note that if you are on windows, you must have Rtools installed, or install it first to be able to compile and install this package.