My mistake - the SystemRequirements line had been lost from my DESCRIPTION file (editing error?). OK and wiser now. Sorry for wasting your time. Murray
On Sun, Jun 24, 2018 at 3:59 AM, Murray Efford <murray.eff...@gmail.com> wrote: > Thanks for the advice. It seems that R CMD check (locally and on > winbuilder) throws the warning despite having SystemRequirements: GNU make. > May not be a problem on CRAN itself. > > I assumed that for CRAN one needed both Makevars and Makevars.win, so have > always included both in submissions to CRAN. > > I suspect Jeff's suggestion, to omit, does not apply to RcppParallel. > > On Sun, Jun 24, 2018 at 3:31 AM, Dirk Eddelbuettel <e...@debian.org> wrote: > >> >> On 24 June 2018 at 03:22, Murray Efford wrote: >> | The RcppParallel introduction at https://rcppcore.github.io/Rcp >> pParallel/ >> | instructs package writers to include a Makevars file with >> | >> | PKG_LIBS += $(shell ${R_HOME}/bin/Rscript -e >> "RcppParallel::RcppParallelLibs()") >> | >> | However, R CMD check in R 3.5.0 generates a warning apparently because >> += >> | and $(shell are non-portable GNU extensions. As a Windows user I'm not >> | familiar with makefiles and am not confident to work around this. Am I >> | missing something, or is there a simple solution? An update to the >> | introduction would be welcome. >> >> Two things: >> >> i) _Every_ R package which needs a Makevars _on Windows_ uses >> src/Makevars.win -- see "Writing R Extensions" >> >> ii) If one needs GNU make, one can declare the dependency in DESCRIPTION >> via >> SystemRequirements: -- again, see "Writing R Extensions" >> >> And we have just that: >> >> SystemRequirements: GNU make, Windows: cmd.exe and cscript.exe, >> Solaris: g++ is required >> >> Does that answer your question? If not, did you look at user >> reverse-depends >> of RcppParallel and examine what they do? One can often copy working >> solution s from other packages... >> >> Dirk >> >> -- >> http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org >> > >
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