[R-pkg-devel] CRAN submission - Specified C++11

[Ivan Krylov]

В Mon, 27 Feb 2023 10:25:55 +0100
Riccardo Di Francesco <difrancesco.riccardo96 using gmail.com> пишет:

> Specifying C++11 is necessary to make my package work. How can I solve
> this?

Is it C++11 exactly or C++ ≥ 11? If the former, you're 100% right to
specify this (but may have problems in unspecified future when someone
decides to stop supporting C++11). If the latter, the answer is more
complicated, especially if you want your package to continue working on
older versions of R.

My own solution is to use the default C++ standard on R ≥ 3.6.2, i.e.
omit the CXX_STD specification entirely (which is at least C++11 there,
and my code has been tested on C++11 to C++17), but explicitly request
at least C++11 on R ≥ 3.1 using a configure script:
https://github.com/aitap/Ropj/commit/cc94320bd5b8b68c879ff604787e71831fff8108

Prior to R-3.1, there seems to have been no way to ask for C++11, so I
don't expect my code to work there.

See also: this R-pkg-devel thread
https://stat.ethz.ch/pipermail/r-package-devel/2023q1/008870.html

-- 
Best regards,
Ivan