Message-ID: <CD68F9B8-F5E3-403C-AB78-86F628C54970@gmail.com>
Date: 2020-02-18T10:35:51Z
From: Peter Dalgaard
Subject: Robust compiler toolchain for R-devel
In-Reply-To: <7b963f7d-2809-4912-9c76-2320187e9822@Spark>
Simon has recently brought up (on R-core) the related issue of what to use as the target platform for 4.0.0.
I don't know whether he is ready to take his deliberations to a wider audience at this point.
-pd
> On 18 Feb 2020, at 09:14 , Patrick Schratz <patrick.schratz at gmail.com> wrote:
>
> Hi,
>
> I am experimenting since some days to find the ?best? compiler toolchain for R-devel to get R-devel package source installs on the new macOS Github Actions runners work in a somewhat stable way.
> I am also on macOS locally which I use for testing as well.
>
> I am aware of https://github.com/rmacoslib/r-macos-rtools. However, using clang7 for all (CC, CXX, etc) leads to some packages failing to build (sometimes due to missing OpenMP capabilities, sometimes undefined).
>
> Therefore I decided to try out gcc (v8 and v9). While this solves most of the OpenMP issues, I am running into problems for other packages regarding CC compilation.
>
> Turns out that using any clang version for CC solves most problems but not all.
> However then I have a mix of gcc and clang which is most likely cause other issues.
>
> Currently Jeroen is developing a new gcc8 based toolchain for Windows.
>
> I was reading the macOS CRAN dev pages but could not find any reasoning why
>
> ? clang7 is suggested
> ? gcc is not used
> ? What future plans are there for the toolchain on macOS
>
> Could someone shine some light on this? Thanks :)
>
> Cheers, Patrick
>
> [[alternative HTML version deleted]]
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
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