[R-pkg-devel] correcting errors in an existing package

[Ivan Krylov]

On Fri, 31 Mar 2023 16:51:40 -0400
Dennis Boos <boos using ncsu.edu> wrote:

> Also, I keep getting the message in the Rstudio check
> 
> WARNING
>    'qpdf' is needed for checks on size reduction of PDFs
> 
> 
> but I got the latest versions of R and Rstudio and was able to get
> qpdf to install and loaded with library(qpdf), but Rstudio still gives
> that message.

Almost there.

The 'qpdf' package interfaces to the same code that the 'qpdf' command
line tool uses to do its job. R CMD check uses the latter, not the
former. It looks like you're on Windows, so you need to install Rtools
in order to get a compatible version of 'qpdf':
https://cran.r-project.org/bin/windows/Rtools/rtools43/rtools.html

-- 
Best regards,
Ivan