[R-SIG-Mac] macos 26 considerations

[Simon Urbanek]

Bill,

on that front, Apple has again been making large breaking changes in Xcode (which they are often slow to fix; with Xcode 26.4 they are going from clang 19 to 21) so I’d definitely avoid going past Xcode 26.3 as that is too risky. That said, I think most of the growing pains in Tahoe have settled (you can pretty much consider x.0 alpha and x.1 beta with most macOS major releases).

Cheers,
Simon


> On 4 Mar 2026, at 13:27, Bill Evans via R-SIG-Mac <r-sig-mac using r-project.org> wrote:
> 
> Gabor,
> 
> Even with macos 26.2, are you on xcode-14.3 and gfortran-14.2? Or are you working in R-devel and therefore on xcode-14.4?
> 
> Bill
> 
> On 2026-02-22 11:47, Gábor Csárdi wrote:
> 
>> On Sun, Feb 22, 2026 at 6:25 PM Bill Evans via R-SIG-Mac
>> <r-sig-mac using r-project.org> wrote:
>> [...]
>>> On 2026-02-22 09:15, Gábor Csárdi wrote:
>>> 
>>>> I am 26.2 and everything works fine, no need to reinstall anything,
>>>> except maybe xquartz, which sometimes needs a reinstall after an
>>>> update. But xquartz works fine as well.
>>> Very interesting! I’m curious about the difference in your experience
>>> and Prof Murdoch’s, perhaps the rgl-dev work is more nuanced than you’ve
>>> tested in your use of xquartz? I wonder if xorg-server would be any
>>> better (since it is quite a bit newer) for that.
>> I don't use rgl or x11, so I indeed only ran `x11(); plot(1:10)` for a
>> minimal test, and opengl indeed does not seem to work if I try
>> library(rgl).
>> 
>> If I just install xorg-server and xinit, then R does not find the X
>> server when loading the R_X11 dll.
>> 
>> G.
> ​
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