# RStan: Example model won't compile after new Rstan Install

**URL:** <https://discourse.mc-stan.org/t/rstan-example-model-wont-compile-after-new-rstan-install/27587>\
**Category:** RStan\
**Created:** [May 22, 2022, 3:01am UTC](https://discourse.mc-stan.org/t/rstan-example-model-wont-compile-after-new-rstan-install/27587 "2022-05-22T03:01:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cwolfe](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@cwolfe](https://discourse.mc-stan.org/u/cwolfe)\
**Post date:** [May 22, 2022, 3:01am UTC](https://discourse.mc-stan.org/t/rstan-example-model-wont-compile-after-new-rstan-install/27587/1 "2022-05-22T03:01:49Z")

</div>

Hello!

I am having issues running the example model (or compile any model) after a new install of rstan and associated dependencies. I have run through the github tutorial several times, receive the desired output, and am able to install jsonlite from source.

However, when I run the `example()` code, I constantly receive the follow error:

Compilation ERROR, function(s)/method(s) not created!  
Error in compileCode(f, code, language = language, verbose = verbose) :  
C:\rtools42\x86\_64-w64-mingw32.static.posix\bin/ld.exe: file4f7c1fcb5494.o:file4f7c1fcb5494.cpp:(.text$\_ZN3tbb8internal26task\_scheduler\_observer\_v3D0Ev[\_ZN3tbb8internal26task\_scheduler\_observer\_v3D0Ev]+0x1d): undefined reference to `tbb::internal::task_scheduler_observer_v3::observe(bool)'C:\rtools42\x86_64-w64-mingw32.static.posix\bin/ld.exe: file4f7c1fcb5494.o:file4f7c1fcb5494.cpp:(.text$_ZN3tbb10interface623task_scheduler_observerD1Ev[_ZN3tbb10interface623task_scheduler_observerD1Ev]+0x1d): undefined reference to `tbb::internal::task\_scheduler\_observer\_v3::observe(bool)'C:\rtools42\x86\_64-w64-mingw32.static.posix\bin/ld.exe: file4f7c1fcb5494.o:file4f7c1fcb5494.cpp:(.text$\_ZN3tbb10interface623task\_scheduler\_observerD1Ev[\_ZN3tbb10interface623task\_scheduler\_observerD1Ev]+0x3a): undefined reference to `tbb::internal::task\_scheduler\_observer\_v3::observe(bool)'C:\rtools42\x86\_64-w64-mingw32.static.posix\bin/ld.exe: file4f7c1fcb5494.o:file4f7c1fcb5494.cpp:(.text$\_ZN3tbb10interface

Any suggestions or advice?

- Operating System: 12th Gen Intel(R) Core™ i9-12900HK 2.50 GHz w/ 32gbs RAM

- RStan Version: 2.21.5

- Output of `writeLines(readLines(file.path(Sys.getenv("HOME"), ".R/Makevars")))`:  
Error in file(con, “r”) : cannot open the connection  
In addition: Warning message:  
In file(con, “r”) :  
cannot open file ‘C:/Users/chris/OneDrive/Documents/.R/Makevars’: No such file or directory

- Output of `devtools::session_info("rstan")`

─ Session info ────────────────────────────────────────────────────────────────────────────  
setting value  
version R version 4.2.0 (2022-04-22 ucrt)  
os Windows 10 x64 (build 22000)  
system x86\_64, mingw32  
ui RStudio  
language (EN)  
collate English\_United States.utf8  
ctype English\_United States.utf8  
tz America/Los\_Angeles  
date 2022-05-21  
rstudio 2022.02.2+485 Prairie Trillium (desktop)  
pandoc NA

─ Packages ────────────────────────────────────────────────────────────────────────────────  
package \* version date (UTC) lib source  
backports 1.4.1 2021-12-13 [1] CRAN (R 4.2.0)  
BH 1.78.0-0 2021-12-15 [1] CRAN (R 4.2.0)  
callr 3.7.0 2021-04-20 [1] CRAN (R 4.2.0)  
checkmate 2.1.0 2022-04-21 [1] CRAN (R 4.2.0)  
cli 3.3.0 2022-04-25 [1] CRAN (R 4.2.0)  
colorspace 2.0-3 2022-02-21 [1] CRAN (R 4.2.0)  
crayon 1.5.1 2022-03-26 [1] CRAN (R 4.2.0)  
desc 1.4.1 2022-03-06 [1] CRAN (R 4.2.0)  
digest 0.6.29 2021-12-01 [1] CRAN (R 4.2.0)  
ellipsis 0.3.2 2021-04-29 [1] CRAN (R 4.2.0)  
fansi 1.0.3 2022-03-24 [1] CRAN (R 4.2.0)  
farver 2.1.0 2021-02-28 [1] CRAN (R 4.2.0)  
ggplot2 3.3.6 2022-05-03 [1] CRAN (R 4.2.0)  
glue 1.6.2 2022-02-24 [1] CRAN (R 4.2.0)  
gridExtra 2.3 2017-09-09 [1] CRAN (R 4.2.0)  
gtable 0.3.0 2019-03-25 [1] CRAN (R 4.2.0)  
inline 0.3.19 2021-05-31 [1] CRAN (R 4.2.0)  
isoband 0.2.5 2021-07-13 [1] CRAN (R 4.2.0)  
labeling 0.4.2 2020-10-20 [1] CRAN (R 4.2.0)  
lattice 0.20-45 2021-09-22 [2] CRAN (R 4.2.0)  
lifecycle 1.0.1 2021-09-24 [1] CRAN (R 4.2.0)  
loo 2.5.1 2022-03-24 [1] CRAN (R 4.2.0)  
magrittr 2.0.3 2022-03-30 [1] CRAN (R 4.2.0)  
MASS 7.3-56 2022-03-23 [2] CRAN (R 4.2.0)  
Matrix 1.4-1 2022-03-23 [2] CRAN (R 4.2.0)  
matrixStats 0.62.0 2022-04-19 [1] CRAN (R 4.2.0)  
mgcv 1.8-40 2022-03-29 [2] CRAN (R 4.2.0)  
munsell 0.5.0 2018-06-12 [1] CRAN (R 4.2.0)  
nlme 3.1-157 2022-03-25 [2] CRAN (R 4.2.0)  
pillar 1.7.0 2022-02-01 [1] CRAN (R 4.2.0)  
pkgbuild 1.3.1 2021-12-20 [1] CRAN (R 4.2.0)  
pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 4.2.0)  
prettyunits 1.1.1 2020-01-24 [1] CRAN (R 4.2.0)  
processx 3.5.3 2022-03-25 [1] CRAN (R 4.2.0)  
ps 1.7.0 2022-04-23 [1] CRAN (R 4.2.0)  
R6 2.5.1 2021-08-19 [1] CRAN (R 4.2.0)  
RColorBrewer 1.1-3 2022-04-03 [1] CRAN (R 4.2.0)  
Rcpp 1.0.8.3 2022-03-17 [1] CRAN (R 4.2.0)  
RcppEigen 0.3.3.9.2 2022-04-08 [1] CRAN (R 4.2.0)  
RcppParallel 5.1.5 2022-01-05 [1] CRAN (R 4.2.0)  
rlang 1.0.2 2022-03-04 [1] CRAN (R 4.2.0)  
rprojroot 2.0.3 2022-04-02 [1] CRAN (R 4.2.0)  
rstan 2.21.5 2022-04-11 [1] CRAN (R 4.2.0)  
scales 1.2.0 2022-04-13 [1] CRAN (R 4.2.0)  
StanHeaders 2.21.0-7 2020-12-17 [1] CRAN (R 4.2.0)  
tibble 3.1.7 2022-05-03 [1] CRAN (R 4.2.0)  
utf8 1.2.2 2021-07-24 [1] CRAN (R 4.2.0)  
vctrs 0.4.1 2022-04-13 [1] CRAN (R 4.2.0)  
viridisLite 0.4.0 2021-04-13 [1] CRAN (R 4.2.0)  
withr 2.5.0 2022-03-03 [1] CRAN (R 4.2.0)

[1] C:/Users/chris/AppData/Local/R/win-library/4.2  
[2] C:/Program Files/R/R-4.2.0/library

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<div class="post-metadata">

**Author:** ![cwolfe](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@cwolfe](https://discourse.mc-stan.org/u/cwolfe)\
**Post date:** [May 23, 2022, 12:52am UTC](https://discourse.mc-stan.org/t/rstan-example-model-wont-compile-after-new-rstan-install/27587/2 "2022-05-23T00:52:26Z")

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Found the workaround after diving through various posts on here and github. I direct anyone having similar issues to this link: [R4.2 , Rstan & Windows · Issue #1006 · stan-dev/rstan · GitHub](https://github.com/stan-dev/rstan/issues/1006).

The problem is that in the most recent CRAN version of rstan, it appears that `make` ignores the environment flags on Windows that coincides with R 4.2. The workaround is to install the Stan-hosted version of the packages (2.26.11) and not the CRAN version (2.21.1).