failure to compile models on Win 10

Summary:

Please provide a short summary (no more than a sentence or two).
failure to compile brms models

Description:

Describe the issue as clearly as possible.

Reproducible Steps:

Please report steps to reproduce the issue. If it's not possible to reproduce, please include a description of how you discovered the issue.

Hi I ran a simple model using brms, with the following code and I copied the output in the console:

intercept_mdl <- brm(F0 ~ 1, data=pitch)

If you have a reproducible example, please include it.

Current Output:

If applicable, any relevant output from RStan.
Compiling Stan program...
make cmd is
make -f "C:/PROGRA1/R/R-4.0.3/etc/x64/Makeconf" -f "C:/PROGRA1/R/R-4.0.3/share/make/winshlib.mk" -f "C:/Users/Veronica/Documents/.R/Makevars.win" CXX='$(CXX14) $(CXX14STD)' CXXFLAGS='$(CXX14FLAGS)' CXXPICFLAGS='$(CXX14PICFLAGS)' SHLIB_LDFLAGS='$(SHLIB_CXX14LDFLAGS)' SHLIB_LD='$(SHLIB_CXX14LD)' SHLIB="file61085bab729c.dll" WIN=64 TCLBIN=64 OBJECTS="file61085bab729c.o"

make would use
"C:/rtools40/mingw64/bin/"g++ -std=gnu++14 -I"C:/PROGRA1/R/R-4.0.3/include" -DNDEBUG -I"C:/Users/Veronica/Documents/R/win-library/4.0/Rcpp/include/" -I"C:/Users/Veronica/Documents/R/win-library/4.0/RcppEigen/include/" -I"C:/Users/Veronica/Documents/R/win-library/4.0/RcppEigen/include/unsupported" -I"C:/Users/Veronica/Documents/R/win-library/4.0/BH/include" -I"C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/include/src/" -I"C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/include/" -I"C:/Users/Veronica/Documents/R/win-library/4.0/RcppParallel/include/" -I"C:/Users/Veronica/Documents/R/win-library/4.0/rstan/include" -DEIGEN_NO_DEBUG -DBOOST_DISABLE_ASSERTS -DBOOST_PENDING_INTEGER_LOG2_HPP -DSTAN_THREADS -DBOOST_NO_AUTO_PTR -include "C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp" -std=c++1y -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c file61085bab729c.cpp -o file61085bab729c.o
if test "zfile61085bab729c.o" != "z"; then
if test -e "file61085bab729c-win.def"; then
echo "C:/rtools40/mingw64/bin/"g++ -shared -s -static-libgcc -o file61085bab729c.dll file61085bab729c-win.def file61085bab729c.o "C:/Users/Veronica/Documents/R/win-library/4.0/rstan/lib/x64/libStanServices.a" -L"C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/libs/x64" -lStanHeaders -L"C:/Users/Veronica/Documents/R/win-library/4.0/RcppParallel/lib/x64" -ltbb -L"C:/PROGRA1/R/R-4.0.3/bin/x64" -lR ;
"C:/rtools40/mingw64/bin/"g++ -shared -s -static-libgcc -o file61085bab729c.dll file61085bab729c-win.def file61085bab729c.o "C:/Users/Veronica/Documents/R/win-library/4.0/rstan/lib/x64/libStanServices.a" -L"C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/libs/x64" -lStanHeaders -L"C:/Users/Veronica/Documents/R/win-library/4.0/RcppParallel/lib/x64" -ltbb -L"C:/PROGRA1/R/R-4.0.3/bin/x64" -lR ;
else
echo EXPORTS > tmp.def;
"C:/rtools40/mingw64/bin/"nm file61085bab729c.o | sed -n 's/^.* [BCDRT] / /p' | sed -e '/[.]refptr[.]/d' -e '/[.]weak[.]/d' | sed 's/[^ ][^ ]*/"&"/g' >> tmp.def;
echo "C:/rtools40/mingw64/bin/"g++ -shared -s -static-libgcc -o file61085bab729c.dll tmp.def file61085bab729c.o "C:/Users/Veronica/Documents/R/win-library/4.0/rstan/lib/x64/libStanServices.a" -L"C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/libs/x64" -lStanHeaders -L"C:/Users/Veronica/Documents/R/win-library/4.0/RcppParallel/lib/x64" -ltbb -L"C:/PROGRA1/R/R-4.0.3/bin/x64" -lR ;
"C:/rtools40/mingw64/bin/"g++ -shared -s -static-libgcc -o file61085bab729c.dll tmp.def file61085bab729c.o "C:/Users/Veronica/Documents/R/win-library/4.0/rstan/lib/x64/libStanServices.a" -L"C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/libs/x64" -lStanHeaders -L"C:/Users/Veronica/Documents/R/win-library/4.0/RcppParallel/lib/x64" -ltbb -L"C:/PROGRA1/R/R-4.0.3/bin/x64" -lR ;
rm -f tmp.def;
fi
fi
Error in compileCode(f, code, language = language, verbose = verbose) :
from C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/include/src/stan/model/model_header.hpp:4, from file61085bab729c.cpp:14:C:/Users/Veronica/Documents/R/win-library/4.0/StanHeaders/include/stan/math/rev/core/set_zero_all_adjoints.hpp:14:13: warning: 'void stan::math::set_zero_all_adjoints()' defined but not used [-Wunused-function] static void set_zero_all_adjoints() { ^~~~~~~~~~~~~~~~~~~~~make: *** [C:/PROGRA1/R/R-4.0.3/etc/x64/Makeconf:229: file61085bab729c.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
Error in sink(type = "output") : invalid connection

Expected Output:

If applicable, the output you expected from RStan.
compiled model

RStan Version:

The version of RStan you are running (e.g., from packageVersion("rstan"))
2.21.2

R Version:

The version of R you are running (e.g., from R.version.string)
4.0.3

Operating System:

Your operating system (e.g., OS X 10.11.3)
devtools::session_info("rstan")

• Session info ------------------------------------------
  setting value
  version R version 4.0.3 (2020-10-10)
  os Windows 10 x64
  system x86_64, mingw32
  ui RStudio
  language (EN)
  collate Chinese (Simplified)_China.936
  ctype Chinese (Simplified)_China.936
  tz Europe/London
  date 2021-08-25

• Packages ----------------------------------------------
  ! package * version date lib source
  backports 1.2.0 2020-11-02 [1] CRAN (R 4.0.3)
  BH 1.72.0-3 2020-01-08 [1] CRAN (R 4.0.0)
  brio 1.1.0 2020-08-31 [1] CRAN (R 4.0.3)
  callr 3.7.0 2021-04-20 [1] CRAN (R 4.0.5)
  checkmate 2.0.0 2020-02-06 [1] CRAN (R 4.0.0)
  cli 2.5.0 2021-04-26 [1] CRAN (R 4.0.5)
  colorspace 1.4-1 2019-03-18 [1] CRAN (R 4.0.0)
  crayon 1.4.1 2021-02-08 [1] CRAN (R 4.0.5)
  curl 4.3 2019-12-02 [1] CRAN (R 4.0.0)
  desc 1.3.0 2021-03-05 [1] CRAN (R 4.0.5)
  diffobj 0.3.2 2020-10-05 [1] CRAN (R 4.0.3)
  digest 0.6.27 2020-10-24 [1] CRAN (R 4.0.3)
  ellipsis 0.3.2 2021-04-29 [1] CRAN (R 4.0.5)
  evaluate 0.14 2019-05-28 [1] CRAN (R 4.0.0)
  fansi 0.4.1 2020-01-08 [1] CRAN (R 4.0.0)
  farver 2.0.3 2020-01-16 [1] CRAN (R 4.0.0)
  ggplot2 * 3.3.5 2021-06-25 [1] CRAN (R 4.0.5)
  glue 1.4.2 2020-08-27 [1] CRAN (R 4.0.3)
  gridExtra 2.3 2017-09-09 [1] CRAN (R 4.0.0)
  gtable 0.3.0 2019-03-25 [1] CRAN (R 4.0.0)
  V inline 0.3.17 2021-05-31 [1] CRAN (R 4.0.5)
  isoband 0.2.3 2020-12-01 [1] CRAN (R 4.0.3)
  jsonlite 1.7.2 2020-12-09 [1] CRAN (R 4.0.5)
  labeling 0.4.2 2020-10-20 [1] CRAN (R 4.0.3)
  lattice 0.20-41 2020-04-02 [2] CRAN (R 4.0.3)
  lifecycle 1.0.0 2021-02-15 [1] CRAN (R 4.0.5)
  loo 2.4.1 2020-12-09 [1] CRAN (R 4.0.3)
  magrittr 2.0.1 2020-11-17 [1] CRAN (R 4.0.3)
  MASS 7.3-53 2020-09-09 [2] CRAN (R 4.0.3)
  Matrix 1.2-18 2019-11-27 [2] CRAN (R 4.0.3)
  matrixStats 0.57.0 2020-09-25 [1] CRAN (R 4.0.3)
  mgcv 1.8-33 2020-08-27 [2] CRAN (R 4.0.3)
  munsell 0.5.0 2018-06-12 [1] CRAN (R 4.0.0)
  nlme 3.1-149 2020-08-23 [2] CRAN (R 4.0.3)
  pillar 1.6.1 2021-05-16 [1] CRAN (R 4.0.3)
  pkgbuild 1.2.0 2020-12-15 [1] CRAN (R 4.0.3)
  pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 4.0.0)
  pkgload 1.2.1 2021-04-06 [1] CRAN (R 4.0.5)
  praise 1.0.0 2015-08-11 [1] CRAN (R 4.0.0)
  prettyunits 1.1.1 2020-01-24 [1] CRAN (R 4.0.0)
  processx 3.5.2 2021-04-30 [1] CRAN (R 4.0.5)
  ps 1.4.0 2020-10-07 [1] CRAN (R 4.0.3)
  R6 2.5.0 2020-10-28 [1] CRAN (R 4.0.3)
  RColorBrewer 1.1-2 2014-12-07 [1] CRAN (R 4.0.0)
  Rcpp * 1.0.7 2021-07-07 [1] CRAN (R 4.0.5)
  RcppEigen 0.3.3.9.1 2020-12-17 [1] CRAN (R 4.0.3)
  D RcppParallel 5.0.2 2020-06-24 [1] CRAN (R 4.0.3)
  rematch2 2.1.2 2020-05-01 [1] CRAN (R 4.0.0)
  rlang 0.4.11 2021-04-30 [1] CRAN (R 4.0.5)
  rprojroot 2.0.2 2020-11-15 [1] CRAN (R 4.0.3)
  rstan * 2.21.2 2020-07-27 [1] CRAN (R 4.0.3)
  rstudioapi 0.13 2020-11-12 [1] CRAN (R 4.0.3)
  scales 1.1.1 2020-05-11 [1] CRAN (R 4.0.0)
  StanHeaders * 2.21.0-6 2020-08-16 [1] CRAN (R 4.0.3)
  testthat 3.0.2 2021-02-14 [1] CRAN (R 4.0.5)
  tibble * 3.1.1 2021-04-18 [1] CRAN (R 4.0.5)
  utf8 1.1.4 2018-05-24 [1] CRAN (R 4.0.0)
  V8 3.4.0 2020-11-04 [1] CRAN (R 4.0.3)
  vctrs 0.3.8 2021-04-29 [1] CRAN (R 4.0.5)
  viridisLite 0.3.0 2018-02-01 [1] CRAN (R 4.0.0)
  waldo 0.2.5 2021-03-08 [1] CRAN (R 4.0.5)
  withr 2.4.2 2021-04-18 [1] CRAN (R 4.0.5)

[1] C:/Users/Documents/R/win-library/4.0
[2] C:/Program Files/R/R-4.0.3/library

V -- Loaded and on-disk version mismatch.
D -- DLL MD5 mismatch, broken installation.

Begin with the brm(F0 ~ 1, data=pitch) reproduction and the compiler output, especially the reported missing g++ path. Compare the R 4.0.3/RStan 2.21.2 Windows setup shown here with the project's supported toolchain; done means the same model compiles successfully.