Path problem installing RStan in RStudio in 64-bit Windows 10

[Simon_Woodward]

I found the answer here

Newbie installation problem

In the file whose path is given by the output of file.path(Sys.getenv("HOME"), ".R", "Makevars") you need to put quotation marks around whatever is assigned to the environmental variable CXX. It should possibly look like CXX="D:\Program Files\Rtools\mingw-64\bin\g++"

You have to edit the path in the following line. Beats me why Rtools just doesn’t install in this directory.

cat(‘Sys.setenv(BINPREF = “C:/Rtools/mingw_$(WIN)/bin/”)’,
file = file.path(Sys.getenv(“HOME”), “.Rprofile”),
sep = “\n”, append = TRUE)