[R-pkg-devel] Compilation used the "non-portable flag"

[Ralf Stubner]

On 10.05.19 22:32, Goldfeld, Keith wrote:
> I am submitting an update to my package ‘simstudy’, and the ran the rhub checks. I received a note from one of the four platforms (the other three passed). The Ubuntu Linux 16.04 objected to the compilation flags:
> 
> * checking compilation flags used ... NOTE
> Compilation used the following non-portable flag(s):
>   ‘-Wdate-time’ ‘-Werror=format-security’ ‘-Wformat’

You can ignore these messages, c.f. https://github.com/r-hub/rhub/issues/264

> I did some searching and someone suggested I create a ‘Makevars’ in the ~/.R directory (which is different from my package directory). This is what I included in the Makevars file:

You cannot remove these compiler flags in a package's Makevars file.
Either ignore the warning (that's what I am doing when using rhub), or
ask the rhub maintainer to add a suitable ~/.R/Makevars file.

Greetings
Ralf

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Ralf Stubner
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