Announcement: R-devel "sonoma-arm64" Mac builds

On Fri, Dec 12, 2025 at 3:20?AM Simon Urbanek

The goal is to remove the existing big-sur-arm64 R-devel binaries in favor of the sonoma-arm64 R-devel build. Since we are still far away from the R-devel release, all this is considered experimental and may change in the future (possibly Fortran upgrade is in the cards), but given that this is not a minor change, I want to give others the opportunity to test the new setup and comment as appropriate.

Thanks. Some quick observations:

The x86_64 build of r-devel on https://mac.r-project.org/ is almost 2
months old?

On arm64, using the latest R-devel-arm64.pkg on a machine with macOS
15 and Xcode_16.2, I get the following error for all packages with
compiled C code:

  error: invalid value 'gnu23' in '-std=gnu23'
  note: use 'c2x' for 'Working Draft for ISO C2x' standard
  note: use 'gnu2x' for 'Working Draft for ISO C2x with GNU extensions' standard