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Why is this R package not installing and how can I fix it?

I would like to include the Fortran routine in the R package. I always only created packages using devtools and roxygen (so my knowledge can be quite limited). I get an error message that prevents me from installing the package after creating it, not being a Win32 application ...

I am using Rtools 3.3. My session info:

> sessionInfo() R version 3.2.2 (2015-08-14) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 7 x64 (build 7601) Service Pack 1 locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] roxygen2_5.0.1 devtools_1.9.1 loaded via a namespace (and not attached): [1] magrittr_1.5 tools_3.2.2 Rcpp_0.12.1 memoise_0.2.1 stringi_1.0-1 stringr_1.0.0 digest_0.6.8

To build the package initially, I run it:

 library(devtools) library(roxygen2) setwd("C:/panterasBox") create("myPack") setwd("C:/panterasBox/myPack") dir.create("C:/panterasBox/myPack/src")

This is the fortran code saved as myFunc.f in the /src file:

  subroutine myFunc(x) implicit none real(8) x x = x + 2 return end

The R wrapper that I use to call it (stored in the /R file):

 #' @title A test #' @description a test function. #' @param x this is a number #' @useDynLib myPack #' @export myFunc <- function(x){ if (!is.loaded('myFunc')) { dyn.load("/src/myPack.dll") } myCall <- NULL myCall <- .Fortran("myFunc", x=as.double(x), PACKAGE="myPack") return(myCall$x) }

Now, to create the documentation and install the package, I run this:

 > document() Updating myPack documentation Loading myPack Re-compiling myPack "C:/Users/pantera/DOCUME~1/R/R-32~1.2/bin/x64/R" --no-site-file --no-environ --no-save --no-restore CMD INSTALL \ "C:\panterasBox\myPack" --library="C:\Users\pantera\AppData\Local\Temp\RtmpQdJJko\devtools_install_1df837dd6c29" --no-R \ --no-data --no-help --no-demo --no-inst --no-docs --no-exec --no-multiarch --no-test-load * installing *source* package 'myPack' ... ** libs gfortran -m64 -O2 -mtune=core2 -c myFunc.f -o myFunc.o gcc -m64 -shared -s -static-libgcc -o myPack.dll tmp.def myFunc.o -Ld:/RCompile/r-compiling/local/local320/lib/x64 -Ld:/RCompile/r-compiling/local/local320/lib -lgfortran -LC:/Users/pantera/DOCUME~1/R/R-32~1.2/bin/x64 -lR installing to C:/Users/pantera/AppData/Local/Temp/RtmpQdJJko/devtools_install_1df837dd6c29/myPack/libs/x64 * DONE (myPack) First time using roxygen2. Upgrading automatically... Updating roxygen version in C:\panterasBox\myPack/DESCRIPTION Writing NAMESPACE Writing myFunc.Rd > install("myPack") Installing myPack "C:/Users/pantera/DOCUME~1/R/R-32~1.2/bin/x64/R" --no-site-file --no-environ --no-save --no-restore CMD INSTALL \ "C:/panterasBox/myPack" --library="C:/Users/pantera/Documents/R/R-3.2.2/library" --install-tests * installing *source* package 'myPack' ... ** libs *** arch - i386 make: Nothing to be done for `all'. installing to C:/Users/pantera/Documents/R/R-3.2.2/library/myPack/libs/i386 *** arch - x64 make: Nothing to be done for `all'. installing to C:/Users/pantera/Documents/R/R-3.2.2/library/myPack/libs/x64 ** R ** preparing package for lazy loading ** help *** installing help indices ** building package indices ** testing if installed package can be loaded *** arch - i386 Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared object 'C:/Users/pantera/Documents/R/R-3.2.2/library/myPack/libs/i386/mypack.dll': LoadLibrary failure: %1 is not a valid Win32 application. Error: loading failed Execution halted *** arch - x64 ERROR: loading failed for 'i386' * removing 'C:/Users/pantera/Documents/R/R-3.2.2/library/myPack' Error: Command failed (1)

I also tried to create and test the package through the command line using R CMD build myPack and then R CMD check myPack_*tar.gz The only error I get is something in my LaTeX package.

Thanks for reading this, and I appreciate any help offered.

Disclaimer: I previously asked this question, but I wanted to ask again "in a minimal way."

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2 answers

Clearly, this is a problem of architecture. It looks like the x64 version of your package (which you probably need) was successfully built, but the x86 build and therefore the overall task failed. Try the following:

  • Add --no-multiarch to call install . This will tell RCmd not to build for x86, because your main arch is x64.
  • (Perhaps optional, but only for convenience.) Add --no-test-load to the install call. This will tell RCmd not to evaluate the success of the build task by successfully downloading the package.
  • Download the package manually using library('myPack') and see if it works.

To summarize, replace the install call with:

 install('myPack', args=c('--no-multiarch','--no-test-load')) library('myPack')
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It looks like you are loading dyn.load("/src/myPack.dll")

but during installation he is looking for:

 'C:/Users/pantera/Documents/R/R-3.2.2/library/myPack/libs/i386/mypack.dll'

(i.e. no capital P)

* Sorry, I do not have enough reputation to put this as a comment.

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