Error in if (grepl(pattern, makefile_txt[i]))

Hi,
I experience various problems with rstan 2.18.2 on Windows 10.
When executing
stan_model(model_code=modelX)
where modelX is a string with my model, I am getting:
Error in if (grepl(pattern, makefile_txt[i])) { :
argument is of length zero

*** Output of writeLines(readLines(file.path(Sys.getenv("HOME"), ".R/Makevars")))
is empty, but
writeLines(readLines(file.path(Sys.getenv(“HOME”), “.R/Makevars.win”)))
CXX14=g++ -std=c++1y -fPIC
CXX14FLAGS=-O3 -march=native -mtune=native
CXX11FLAGS=-O3 -march=native -mtune=native

*** devtools::session_info(“rstan”)

  • Session info ---------------------------------------------------------------
    setting value
    version R version 3.6.0 (2019-04-26)
    os Windows 10 x64
    system x86_64, mingw32
    ui Rgui
    language (EN)
    collate English_United States.1252
    ctype English_United States.1252
    tz America/Los_Angeles
    date 2019-05-15

  • Packages -------------------------------------------------------------------
    package * version date lib source
    assertthat 0.2.1 2019-03-21 [1] CRAN (R 3.6.0)
    backports 1.1.4 2019-04-10 [1] CRAN (R 3.6.0)
    BH 1.69.0-1 2019-01-07 [1] CRAN (R 3.6.0)
    callr 3.2.0 2019-03-15 [1] CRAN (R 3.6.0)
    checkmate 1.9.3 2019-05-03 [1] CRAN (R 3.6.0)
    cli 1.1.0 2019-03-19 [1] CRAN (R 3.6.0)
    colorspace 1.4-1 2019-03-18 [1] CRAN (R 3.6.0)
    crayon 1.3.4 2017-09-16 [1] CRAN (R 3.6.0)
    desc 1.2.0 2018-05-01 [1] CRAN (R 3.6.0)
    digest 0.6.18 2018-10-10 [1] CRAN (R 3.6.0)
    fansi 0.4.0 2018-10-05 [1] CRAN (R 3.6.0)
    ggplot2 3.1.1 2019-04-07 [1] CRAN (R 3.6.0)
    glue 1.3.1 2019-03-12 [1] CRAN (R 3.6.0)
    gridExtra 2.3 2017-09-09 [1] CRAN (R 3.6.0)
    gtable 0.3.0 2019-03-25 [1] CRAN (R 3.6.0)
    inline 0.3.15 2018-05-18 [1] CRAN (R 3.6.0)
    labeling 0.3 2014-08-23 [1] CRAN (R 3.6.0)
    lattice 0.20-38 2018-11-04 [2] CRAN (R 3.6.0)
    lazyeval 0.2.2 2019-03-15 [1] CRAN (R 3.6.0)
    loo 2.1.0 2019-03-13 [1] CRAN (R 3.6.0)
    magrittr 1.5 2014-11-22 [1] CRAN (R 3.6.0)
    MASS 7.3-51.4 2019-03-31 [2] CRAN (R 3.6.0)
    Matrix 1.2-17 2019-03-22 [2] CRAN (R 3.6.0)
    matrixStats 0.54.0 2018-07-23 [1] CRAN (R 3.6.0)
    mgcv 1.8-28 2019-03-21 [2] CRAN (R 3.6.0)
    munsell 0.5.0 2018-06-12 [1] CRAN (R 3.6.0)
    nlme 3.1-139 2019-04-09 [2] CRAN (R 3.6.0)
    pillar 1.4.0 2019-05-11 [1] CRAN (R 3.6.0)
    pkgbuild 1.0.3 2019-03-20 [1] CRAN (R 3.6.0)
    pkgconfig 2.0.2 2018-08-16 [1] CRAN (R 3.6.0)
    plyr 1.8.4 2016-06-08 [1] CRAN (R 3.6.0)
    prettyunits 1.0.2 2015-07-13 [1] CRAN (R 3.6.0)
    processx 3.3.1 2019-05-08 [1] CRAN (R 3.6.0)
    ps 1.3.0 2018-12-21 [1] CRAN (R 3.6.0)
    R6 2.4.0 2019-02-14 [1] CRAN (R 3.6.0)
    RColorBrewer 1.1-2 2014-12-07 [1] CRAN (R 3.6.0)
    Rcpp 1.0.1 2019-03-17 [1] CRAN (R 3.6.0)
    RcppEigen 0.3.3.5.0 2018-11-24 [1] CRAN (R 3.6.0)
    reshape2 1.4.3 2017-12-11 [1] CRAN (R 3.6.0)
    rlang 0.3.4 2019-04-07 [1] CRAN (R 3.6.0)
    rprojroot 1.3-2 2018-01-03 [1] CRAN (R 3.6.0)
    rstan 2.18.2 2018-11-07 [1] CRAN (R 3.6.0)
    scales 1.0.0 2018-08-09 [1] CRAN (R 3.6.0)
    StanHeaders 2.18.1 2019-01-28 [1] CRAN (R 3.6.0)
    stringi 1.4.3 2019-03-12 [1] CRAN (R 3.6.0)
    stringr 1.4.0 2019-02-10 [1] CRAN (R 3.6.0)
    tibble 2.1.1 2019-03-16 [1] CRAN (R 3.6.0)
    utf8 1.1.4 2018-05-24 [1] CRAN (R 3.6.0)
    vctrs 0.1.0 2018-11-29 [1] CRAN (R 3.6.0)
    viridisLite 0.3.0 2018-02-01 [1] CRAN (R 3.6.0)
    withr 2.1.2 2018-03-15 [1] CRAN (R 3.6.0)
    zeallot 0.1.0 2018-01-28 [1] CRAN (R 3.6.0)

[1] C:/Users/slawek/Documents/R/win-library/3.6
[2] C:/Program Files/R/R-3.6.0/library

I should probably add that I use Rtools 3.5.
Executing Sys.which(“g++”)
I get
“c:\Rtools\mingw_64\bin\G__~1.EXE”

Thanks!

Hi,
I would like to add, that there appears to be nothing wrong with the model and generally the R code around it: I moved to Ubuntu 18 and everything works. So the issue is Rstan on Windows 10.

Yeah. I think this has been fixed on GitHub.