# Compilation ERROR, function(s)/method(s) not created!

**URL:** <https://discourse.mc-stan.org/t/compilation-error-function-s-method-s-not-created/27315>\
**Category:** RStan\
**Created:** [April 29, 2022, 8:42pm UTC](https://discourse.mc-stan.org/t/compilation-error-function-s-method-s-not-created/27315 "2022-04-29T20:42:13Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![pch276](https://avatars.discourse-cdn.com/v4/letter/p/958977/32.png) [@pch276](https://discourse.mc-stan.org/u/pch276)\
**Post date:** [April 29, 2022, 8:42pm UTC](https://discourse.mc-stan.org/t/compilation-error-function-s-method-s-not-created/27315/1 "2022-04-29T20:42:13Z")

</div>

Short summary of the problem:  
Compilation ERROR, function(s)/method(s) not created!  
Error in compileCode(f, code, language = language, verbose = verbose) :  
cc1plus.exe: fatal error: \ad.uky.edu/AS/Statistics/pch276/Documents/R/win-library/4.1/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp: No such file or directorycompilation terminated.make: \*\*\* [C:/PROGRA~1/R/R-41~1.3/etc/x64/Makeconf:245: file2944ed26ff0.o] Error 1

Here is the code I am trying to run:

```nohighlight
example(stan_model, package = "rstan", run.dontrun = TRUE)

```

If your question relates to installation please provide the following information:

- Operating System  
Windows 10
- 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 ‘[//ad.uky.edu/AS/Statistics/pch276/Documents/.R/Makevars](https://ad.uky.edu/AS/Statistics/pch276/Documents/.R/Makevars)’: No such file or directory
- Output of `devtools::session_info("rstan")`

- Session info -----------------------------------------------------------------  
setting value  
version R version 4.1.3 (2022-03-10)  
os Windows 10 x64 (build 19041)  
system x86\_64, mingw32  
ui RStudio  
language (EN)  
collate English\_United States.1252  
ctype English\_United States.1252  
tz America/New\_York  
date 2022-04-29  
rstudio 2022.02.0+443 Prairie Trillium (desktop)  
pandoc 2.17.1.1 @ C:/Program Files/RStudio/bin/quarto/bin/ (via rmarkdown)

- Packages ---------------------------------------------------------------------  
! package \* version date (UTC) lib source  
backports 1.2.1 2020-12-09 [1] CRAN (R 4.1.1)  
BH 1.78.0-0 2021-12-15 [1] CRAN (R 4.1.2)  
callr 3.7.0 2021-04-20 [1] CRAN (R 4.1.3)  
checkmate 2.0.0 2020-02-06 [1] CRAN (R 4.1.3)  
cli 3.2.0 2022-02-14 [1] CRAN (R 4.1.3)  
colorspace 2.0-2 2021-06-24 [1] CRAN (R 4.1.1)  
crayon 1.4.1 2021-02-08 [1] CRAN (R 4.1.1)  
desc 1.4.1 2022-03-06 [1] CRAN (R 4.1.3)  
digest 0.6.27 2020-10-24 [1] CRAN (R 4.1.0)  
ellipsis 0.3.2 2021-04-29 [1] CRAN (R 4.1.1)  
fansi 0.5.0 2021-05-25 [1] CRAN (R 4.1.1)  
farver 2.1.0 2021-02-28 [1] CRAN (R 4.1.1)  
ggplot2 \* 3.3.5 2021-06-25 [1] CRAN (R 4.1.1)  
glue 1.6.2 2022-02-24 [1] CRAN (R 4.1.3)  
gridExtra 2.3 2017-09-09 [1] CRAN (R 4.1.2)  
gtable 0.3.0 2019-03-25 [1] CRAN (R 4.1.1)  
inline 0.3.19 2021-05-31 [1] CRAN (R 4.1.3)  
isoband 0.2.5 2021-07-13 [1] CRAN (R 4.1.1)  
labeling 0.4.2 2020-10-20 [1] CRAN (R 4.1.0)  
lattice 0.20-45 2021-09-22 [2] CRAN (R 4.1.3)  
lifecycle 1.0.0 2021-02-15 [1] CRAN (R 4.1.1)  
loo 2.5.1 2022-03-24 [1] CRAN (R 4.1.3)  
magrittr 2.0.1 2020-11-17 [1] CRAN (R 4.1.0)  
MASS 7.3-55 2022-01-16 [2] CRAN (R 4.1.3)  
Matrix 1.4-0 2021-12-08 [2] CRAN (R 4.1.3)  
matrixStats 0.60.1 2021-08-23 [1] CRAN (R 4.1.1)  
mgcv 1.8-39 2022-02-24 [2] CRAN (R 4.1.3)  
munsell 0.5.0 2018-06-12 [1] CRAN (R 4.1.1)  
nlme 3.1-155 2022-01-16 [2] CRAN (R 4.1.3)  
pillar 1.6.2 2021-07-29 [1] CRAN (R 4.1.1)  
pkgbuild 1.3.1 2021-12-20 [1] CRAN (R 4.1.3)  
pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 4.1.1)  
prettyunits 1.1.1 2020-01-24 [1] CRAN (R 4.1.1)  
processx 3.5.3 2022-03-25 [1] CRAN (R 4.1.3)  
ps 1.6.0 2021-02-28 [1] CRAN (R 4.1.3)  
R6 2.5.1 2021-08-19 [1] CRAN (R 4.1.1)  
RColorBrewer 1.1-2 2014-12-07 [1] CRAN (R 4.1.0)  
Rcpp 1.0.7 2021-07-07 [1] CRAN (R 4.1.1)  
RcppEigen 0.3.3.9.1 2020-12-17 [1] CRAN (R 4.1.0)  
D RcppParallel 5.1.5 2022-01-05 [1] CRAN (R 4.1.3)  
rlang 1.0.2 2022-03-04 [1] CRAN (R 4.1.3)  
rprojroot 2.0.2 2020-11-15 [1] CRAN (R 4.1.1)  
rstan \* 2.21.5 2022-04-11 [1] CRAN (R 4.1.3)  
scales 1.1.1 2020-05-11 [1] CRAN (R 4.1.1)  
StanHeaders \* 2.21.0-7 2020-12-17 [1] CRAN (R 4.1.3)  
tibble 3.1.4 2021-08-25 [1] CRAN (R 4.1.1)  
utf8 1.2.2 2021-07-24 [1] CRAN (R 4.1.1)  
vctrs 0.3.8 2021-04-29 [1] CRAN (R 4.1.1)  
viridisLite 0.4.0 2021-04-13 [1] CRAN (R 4.1.1)  
withr 2.2.0 2020-04-20 [1] CRAN (R 4.1.3)

[1] \ad.uky.edu/AS/Statistics/pch276/Documents/R/win-library/4.1  
[2] C:/Program Files/R/R-4.1.3/library

D – DLL MD5 mismatch, broken installation.

* * *

Is there anyone able to help me to solve the problem. By the way, I have uninstall and install the rstan and StanHeaders a lot of times.

Thank you very much.

---

<div class="post-metadata">

**Author:** ![andrjohns](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/andrjohns/32/15297_2.png) [@andrjohns](https://discourse.mc-stan.org/u/andrjohns)\
**Post date:** [April 30, 2022, 4:09am UTC](https://discourse.mc-stan.org/t/compilation-error-function-s-method-s-not-created/27315/2 "2022-04-30T04:09:33Z")

</div>

This error is occurring because your R packages are installed on a network drive: `\ad.uky.edu/AS/Statistics/pch276/Documents/R/win-library`, rather than on your local computer. R can have trouble finding headers from packages during compilation when this is the case.

To resolve this, you’ll need to move your R package library to your local computer

---

<div class="post-metadata">

**Author:** ![pch276](https://avatars.discourse-cdn.com/v4/letter/p/958977/32.png) [@pch276](https://discourse.mc-stan.org/u/pch276)\
**Post date:** [April 30, 2022, 11:43pm UTC](https://discourse.mc-stan.org/t/compilation-error-function-s-method-s-not-created/27315/3 "2022-04-30T23:43:57Z")

</div>

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:/Program Files/.R/Makevars’: No such file or directory

It still happens. Could you please resolve this please?

---

<div class="post-metadata">

**Author:** ![andrjohns](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/andrjohns/32/15297_2.png) [@andrjohns](https://discourse.mc-stan.org/u/andrjohns)\
**Post date:** [May 1, 2022, 9:31am UTC](https://discourse.mc-stan.org/t/compilation-error-function-s-method-s-not-created/27315/4 "2022-05-01T09:31:32Z")

</div>

This command (I’m guessing from the forum post template?) is only for showing the contents of the Makevars file. On Windows, this file is called ‘Makevars.win’.

The process for creating it is covered in the Getting Started Guide here: [Configuring C Toolchain for Windows · stan-dev/rstan Wiki · GitHub](https://github.com/stan-dev/rstan/wiki/Configuring-C---Toolchain-for-Windows#makevars-configuration)