I'm trying to knit an Rmd document to html in RStudio under Windows 10 (which I never had problems with before ...). Suddenly, RStudio keeps saying that an updated version of the package "xfun" has to be installed. Agreeing to that results in the following output:
There is a binary version available but the source version is later:
binary source needs_compilation
xfun 0.13 0.25 FALSE
installing the source package ‘xfun’
trying URL 'https://cran.rstudio.com/src/contrib/xfun_0.25.tar.gz'
Content type 'application/x-gzip' length 112755 bytes (110 KB)
downloaded 110 KB
- installing source package 'xfun' ...
** package 'xfun' successfully unpacked and MD5 sums checked
*** arch - i386
c:/Rtools/mingw_32/bin/gcc -I"C:/PROGRA~1/R/R-35~1.0/include" -DNDEBUG -O3 -Wall -std=gnu99 -mtune=generic -c base64.c -o base64.o
sh: line 1: c:/Rtools/mingw_32/bin/gcc: No such file or directory
make: *** [C:/PROGRA~1/R/R-35~1.0/etc/i386/Makeconf:208: base64.o] Error 127
ERROR: compilation failed for package 'xfun'
- removing 'C:/Users/Uwe/Documents/R/win-library/3.5/xfun'
- restoring previous 'C:/Users/Uwe/Documents/R/win-library/3.5/xfun'
In R CMD INSTALL
Warning in install.packages :
installation of package ‘xfun’ had non-zero exit status
If I type "library(xfun)" the package is loaded. (I installed a binary version as RStudio notes).
I noticed that the file c:/Rtools/mingw_32/bin/gcc does not exist.
The correct path is C:\rtools40\mingw32\bin\gcc
How can I tell RStudio the correct path??