The Objective-C++ compiler now by default uses the standard

for C++ (currently C++17) rather than the default

standard for the C++ compiler (which on macOS is still C++98).

Accelerate framework.  Those interfaces are only available in macOS

By default the option uses new Accelerate for BLAS calls: to also

later interfaces provide LAPACK 3.9.1 rather than 3.2.1: 3.9.1 is

from 2021-04 and does not include the improved algorithms

introduced in LAPACK 3.10.0 (including for BLAS calls).

The makefiles and installer scripts for Windows have been

is based on GCC 13 and newer versions of

and libraries (targeting 64-bit Intel CPUs).  R-devel can no longer be

Rtools44 has experimental support for 64-bit ARM

without declaring a strong dependence on package

names ending in a period; this is ignored by

To see the failing lines set environment variable

that this will in future become the default for compiling C++.

%% E.g. become part of \code{check --no-cran} for R 4.5.0.

to mark example code whose output should be ignored when comparing

shown on the rendered help page, so provides a clean alternative

packages are not portable and may fail to install on some platforms.

unneeded by their documented entry points.  They no longer do so.

to support experimenting with alternative object systems.  The

deprecated.  Based on contributions from the R Consortium's

are now deprecated.  They do not support recent

graphics enhancements and their font handling is rudimentary. The

intention is to retain them for historical interest as long as

a legacy encoding supporting classic macOS up to 2001 and no

is deprecated as no other S dialect is known

to be in use (and this could only identify historical dialects,

Further information on calls can be obtained by setting the

which turns the deprecation warning into an error and so by

default gives a traceback.  (This is done by

assigned in the generic function into method call environments

before evaluating the method body. This makes method calls behave

more like standard function calls and makes method code easier to