Installing source package - failure to link

RStudio IDE
1

Error Information:

* installing *source* package 'mypkg' ...
** libs

*** arch - i386
C:/Users/WXC4/tools/R/Rtools/mingw_64/bin/gcc  -I"C:/Users/WXC4/tools/R/R-34~1.4/include" -DNDEBUG          -O3 -Wall  -std=gnu99 -mtune=generic -c grad_func.c -o grad_func.o
C:/Users/WXC4/tools/R/Rtools/mingw_64/bin/g++ -shared -s -static-libgcc -o bibetaROC.dll tmp.def grad_func.o -LC:/Users/WXC4/tools/R/R-34~1.4/bin/i386 -lR
C:/Users/WXC4/tools/R/Rtools/mingw_64/bin/../lib/gcc/x86_64-w64-mingw32/4.9.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Users/WXC4/tools/R/R-34~1.4/bin/i386/R.dll when searching for -lR
C:/Users/WXC4/tools/R/Rtools/mingw_64/bin/../lib/gcc/x86_64-w64-mingw32/4.9.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Users/WXC4/tools/R/R-34~1.4/bin/i386/R.dll when searching for -lR
C:/Users/WXC4/tools/R/Rtools/mingw_64/bin/../lib/gcc/x86_64-w64-mingw32/4.9.3/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lR
collect2.exe: error: ld returned 1 exit status
no DLL was created
ERROR: compilation failed for package 'mypkg'
* removing 'C:/Users/WXC4/tools/R/My-R-Packages/mypkg'
In R CMD INSTALL
Warning in install.packages :
  running command '"C:/Users/WXC4/tools/R/R-34~1.4/bin/x64/R" CMD INSTALL -l "C:\Users\WXC4\tools\R\My-R-Packages" "C:/Users/WXC4/Documents/Research/mypkg.tar.gz"' had status 1
Warning in install.packages :
  installation of package ‘C:/Users/WXC4/Documents/Research/mypkg.tar.gz’ had non-zero exit status

Description of issue -
Trying to build a package I developed years ago from source. My computer was recently refreshed and the R and RStudio were re-installed. Initially it cannot find gcc, then I used the trick here and it seems to solve the gcc problem. Then now it looks like having a linking problem.
Steps taken so far -

System Information:

  • RStudio Edition: Desktop
  • RStudio Version: Version 1.1.453
  • OS Version: Windows 10
  • R Version: R version 3.4.4 (2018-03-15)

From Troubleshooting Guide: Using RStudio

2

Hi, @roc! Welcome!

To help narrow down what’s going on here, does the same thing happen if you try to build your package from R, outside of RStudio?

3

These lines indicate that, for some reason, R is attempting to link to its 32-bit library even though the 64-bit compiler is being invoked. I'm not exactly sure why this is happening, though -- it could be something in your PATH, or something unique to your package's build process (it's hard to know without access to your package's sources)