R Portable Files

CHANGES IN R 3.4.4:

NEW FEATURES:

• Sys.timezone() tries more heuristics on Unix-alikes and so is more likely to succeed (especially on Linux). For the slowest method, a warning is given recommending that TZ is set to avoid the search.
• The version of LAPACK included in the sources has been updated to 3.8.0 (for the routines used by R, a very minor bug-fix change).
• parallel::detectCores(logical = FALSE) is ignored on Linux systems, since the information is not available with virtualized OSes.

INSTALLATION on a UNIX-ALIKE:

• configure will use pkg-config to find the flags to link to jpeg if available (as it should be for the recently-released jpeg-9c and libjpeg-turbo). (This amends the code added in R 3.3.0 as the module name in jpeg-9c is not what that tested for.)

DEPRECATED AND DEFUNCT:

• Sys.timezone(location = FALSE) (which was a stop-gap measure for Windows long ago) is deprecated. It no longer returns the value of environment variable TZ (usually a location).
• Legacy support of make macros such as CXX1X is formally deprecated: use the CXX11 forms instead.

BUG FIXES:

• power.prop.test() now warns when it cannot solve the problem, typically because of impossible constraints. (PR#17345)
• removeSource() no longer erroneously removes NULL in certain cases, thanks to D'enes T'oth.
• nls(`NO [mol/l]` ~ f(t)) and nls(y ~ a) now work. (Partly from PR#17367)
• R CMD build checks for GNU cp rather than assuming Linux has it. (PR#17370 says 'Alpine Linux' does not.)
• Non-UTF-8 multibyte character handling fixed more permanently (PR#16732).
• sum(<large ints>, <stuff>) is more consistent. (PR#17372)
• rf() and rbeta() now also work correctly when ncp is not scalar, notably when (partly) NA. (PR#17375)
• R CMD INSTALL now correctly sets C++ compiler flags when all source files are in sub-directories of src.