Robust compiler toolchain for R-devel
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 Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: pd.mes at cbs.dk Priv: PDalgd at gmail.com