Hey Patrick, i had the same issue /problem on my MAC. First of all you need from Apple XCODE the Command-Line.
I find here a good instruction to do that: https://wiki.helsinki.fi/display/HUGG/GNU+compiler+install+on+Mac+OS+X But, I´m not sure if you can compile the GNU-C 9.x - Version. Try it and if you have found out, how - please let me know. Best regards…. Matthias Krawutschke, Dipl. Inf. Universität Potsdam ZIM - Zentrum für Informationstechnologie und Medienmanagement Arbeitsbereich: High-Performance-Computing on Cluster - Environment Campus Am Neuen Palais: Am Neuen Palais 10 | 14469 Potsdam Tel: +49 331 977-4444, Fax: +49 331 977-1750 Internet: https://www.uni-potsdam.de/de/zim/angebote-loesungen/hpc.html -----Ursprüngliche Nachricht----- Von: R-SIG-Mac <r-sig-mac-boun...@r-project.org> Im Auftrag von Patrick Schratz Gesendet: Dienstag, 18. Februar 2020 09:15 An: Martin Jean via R-SIG-Mac <r-sig-mac@r-project.org> Betreff: [R-SIG-Mac] Robust compiler toolchain for R-devel 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]] _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
