I've added a page on the developer site on `Resources for Portable Programming' It should show up via the index page in due course and is at https://svn.r-project.org/R-dev-web/trunk/Portability.html now. (R core members are welcome to add to it.) Some of the articles linked there are very useful background on e.g. 32- vs 64-bit differences and how to write efficient shared libraries. Some of these things are targets for R 2.2.0 (e.g. using lib64, controllng visibility), especially after gcc 4.0.0 is released (it was due this week). Note to users of ix86 Linux: valgrind 2.4.0 is out and has solved almost all the instability problems of 2.2.0 on recent Linux kernels.
Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595