R-devel now makes use of gcc4's visibility features: for an in-depth account see
http://people.redhat.com/drepper/dsohowto.pdf (and note there are older versions of that document around). Consider for example stats.so. On a gcc4 Linux system this has just three entry points gannet% nm -g stats.so | grep " T " 00002720 T R_init_stats 0004a544 T _fini 00001f28 T _init since the only entry point we need is the symbol registration. This results in a smaller DSO and a faster load. It is only worth doing for shared objects with many entry points, but this one had 262. It also gives another reason for the registration of symbols, as this is the only way I know to hide Fortran entry points (except to hide them all, which will hide them from .Fortran). Until recently registration was used in the standard packages and a handful of others (not including any recommended packages). You can copy the way it is done in package stats (see PKG_* in Makefile.in and init.c). The next step will be to prune libR.so down to something close to the documented API (it currently has 1816 exported symbols). -- Brian D. Ripley, [EMAIL PROTECTED] 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 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
