I installed rstan from the “source”. I made sure rtools40 is up to date and created the .Renviron file in Documents. Made sure there is no .Rprofile file. But I am still getting an error when running the example model.
> library(rstan) Loading required package: StanHeaders Loading required package: ggplot2 Need help getting started? Try the R Graphics Cookbook: https://r-graphics.org rstan (Version 2.21.2, GitRev: 2e1f913d3ca3) For execution on a local, multicore CPU with excess RAM we recommend calling options(mc.cores = parallel::detectCores()). To avoid recompilation of unchanged Stan programs, we recommend calling rstan_options(auto_write = TRUE) Do not specify '-march=native' in 'LOCAL_CPPFLAGS' or a Makevars file > example(stan_model, package = "rstan", run.dontrun = TRUE) Compilation ERROR, function(s)/method(s) not created! Error in compileCode(f, code, language = language, verbose = verbose) : clone_impl: ^C:/Users/chascott/Documents/R/win-library/4.1/BH/include/boost/exception/exception.hpp:472:9: error: expected declaration before '}' token } ^make: *** [C:/PROGRA~1/R/R-41~1.1/etc/x64/Makeconf:245: file3c4470556947.o] Error 1 In addition: Warning message: In system(paste(CXX, ARGS), ignore.stdout = TRUE, ignore.stderr = TRUE) : 'C:/rtools40/usr/mingw_/bin/g++' not found