Please Help: error message when installing packages in RStudio

Hi,

I am unable to install packages in RStudio,

I also downloaded RTools but the installation instructions on CRAN aren't very clear.
Instructions below, not sure how to create the files and where to place them:


(https://cran.rstudio.com/bin/windows/Rtools/)

Putting Rtools on the PATH

After installation is complete, you need to perform one more step to be able to compile R packages: you need to put the location of the Rtools make utilities ( bash , make , etc) on the PATH . The easiest way to do so is create a text file .Renviron in your Documents folder which contains the following line:

PATH="${RTOOLS40_HOME}\usr\bin;${PATH}"

You can do this with a text editor, or you can even do it from R like so:

writeLines('PATH="${RTOOLS40_HOME}\\usr\\bin;${PATH}"', con = "~/.Renviron")

Now restart R, and verify that make can be found, which should show the path to your Rtools installation.

Sys.which("make")
## "C:\\rtools40\\usr\\bin\\make.exe"

If this works, you can try to install an R package from source:

install.packages("jsonlite", type = "source")

If this succeeds, you’re good to go! See the links below to learn more about rtools40 and the Windows build infrastructure.

I do not see any error in the screen shot you posted. There is a warning but the installation process completes successfully. Try

library(learnr)
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thanks, does the warning message effect anything? Do I need RTools?

No warning messeage never affect your package

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