GNU make is a SystemRequirements.

[liyi-1989]

I am creating a package using the RcppParallel package and using the setting from [http://rcppcore.github.io/RcppParallel/] for src\Makevars and src\Makevars.win files.

However, when I check the package with devtools::check(), it has a NOTE:

• checking for GNU extensions in Makefiles ... NOTE
  GNU make is a SystemRequirements.

Do you know how to solve this? or I can ignore this when I submit it ro CRAN?

Thanks!

[dselivanov]

I think, it's ok. I hadn't any problems while submitting to CRAN.

[liyi-1989]

OK, thank you so much!

[eddelbuettel]

This is not really the place for this question -- the r-package-devel list.

As for the NOTE, there are two known solutions:

• list GNU make in SystemRequirements
• rename the Makefile to GNUmakefile

We have packages using either approach.

[liyi-1989]

Thanks Dirk! I am using the first approach. I will try the second one.

[dselivanov]

Even after adding GNU make to SystemRequirements, CRAN throws this note.

[kevinushey]

The note is delivered regardless -- it doesn't mean that CRAN will reject your package. In the worst case, they might ask you to justify why you need GNU make over just using a more portable make syntax.

[liyi-1989]

OK, great! Thanks Kevin!