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A general description is here.
Installation is aborted immediately if a ‘LinkingTo’ package is not installed.
‘R CMD build’ (with the internal ‘tar’) checks the permissions of ‘configure’ and ‘cleanup’ files and adds execute permission to the recorded permissions for these files if needed, with a warning. This is useful on OSes and file systems which do not support execute permissions.
‘Rdefines.h’ has been tweaked so it can be included in C++ code after ‘R_ext/Boolean.h’ (which is included by ‘R.h’).
Note that ‘Rdefines.h’ is not kept up-to-date, and ‘Rinternals.h’ is preferred for new code.
On Windows, the installer modified the ‘etc/Rconsole’ and ‘etc/Rprofile.site’ files even when default options were chosen, so the MD5 sums did not refer to the installed versions. (Reported by Tal Galili.)
‘plot(hclust(), cex =’ respects ‘cex’ again (and possibly other similarly). (Reported by Peter Langfelder.)