> ... So there are two alternatives: > > - Write spkgs for everything I use (including some stuff which > already have Gento packages, such as suitesparse) and give them Sage > - Point them to a stripped Gento prefix bootstrap, and write Gento > packages for the (fewer) packages that are missing > > Dag Sverre
Hi Dag Sverre, there may be a third alternative, FEMhub seems to incorporate also many of the packages you mentioned: http://femhub.org/codes.html Back to Sage and Gentoo/Prefix. In my eyes, the biggest difference between them, is the way dynamic libraries are handled (especially finding the "right" ones). Sage uses "LD_LIBRARY_PATH", whereas Gentoo/ Prefix uses the "rpath" feature, going so far as to use a customized libtool, IIRC. Gentoo is a "source" distribution, so that's fine from their perspective. Sage, on the other hand, has the very nice feature of being able to provide binary installs "working everywhere", relying on relocatability (move an entire Sage install to some different place in your file system tree, and after some bookkeeping, it will continue to work). To achieve the latter without using "LD_LIBRARY_PATH", but with using "rpath" (i.e. hardcoding the paths of the needed libraries linked against, directly in the library/binary itself), is not impossible. There are tools like "chrpath" under Linux and "install_name_tool" under Mac OS X, which could be used to adapt these hardcoded paths. But currently, Sage lacks the necessary infrastructure to be able to decide (upon, say, a relocation) which libraries are linked against by which others, which libraries are to be adapted --- in the end, currently, Sage does not even really "know" of the existence of libraries, it's all rather implicit resp. scattered all over the place ... I think you know enough of the Cython world, to know what I mean (have e.g. a look at Sage's "module_list.py"). That said --- go on, and share you experiences with us! Cheers, Georg -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org To unsubscribe from this group, send email to sage-devel+unsubscribegooglegroups.com or reply to this email with the words "REMOVE ME" as the subject.
