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A general description is here.
Using a prompt of more than 80 characters in ‘readline()’ could cause a
buffer overflow in Rterm. (Reported by Henrik Bengtsson.)
The preferred toolchain has changed since the one used for R 2.12.0 to 2.14.1: see the‘R Installation and Administration manual’. Compiled code (except DLLs) may be incompatible with previous toolchains (and compiled C++ code almost certainly will be: users of ‘Rcpp’ take care).
Ensure that the settings in ‘MkRules.local’ are appropriate to the toolchain you use.
There is a new macro (aka make variable) ‘SHLIB_PTHREAD_FLAGS’. This is set to ‘-pthread’ on builds using toolchains which support it, and should be included in both ‘PKG_CPPFLAGS’ (or the Fortran or F9x equivalents) and ‘PKG_LIBS’.
The sources (and packages) can now be compiled using the multilib toolchain developed for R 2.15.x: see the ‘MULTI’ macro in ‘MkRules.dist’. This toolchain is used for the CRAN binary distribution.