On 23 May, 2013, at 7:38, Chris Barker - NOAA Federal <chris.bar...@noaa.gov> wrote:
> I just poked a bit into the Anaconda Python distribution. their > packages are simple tarballs, but I think they have a dependency > management system of some sort. > > They deliver the dependencies as separate packages (tarballs), one for > each lib. It looksl ike it all gets unpacked inot a sinlgle dir (in > /opt), and an example python extension is built like this: > > $ otool -L netCDF4.so > netCDF4.so: > @loader_path/../../libnetcdf.7.dylib (compatibility version 10.0.0, > current version 10.0.0) > @loader_path/../../libhdf5_hl.7.dylib (compatibility version 8.0.0, > current version 8.3.0) > @loader_path/../../libhdf5.7.dylib (compatibility version 8.0.0, > current version 8.3.0) > @loader_path/../../libz.1.dylib (compatibility version 1.0.0, current > version 1.2.7) > /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version > 1.0.0) > /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current > version 111.0.0) > > > I don't know how to get that @loader_path thing in there, but this > seems like a reasonable way to do it (though I guess it wouldn't > support virtualenv...) Interesting... @loader_path could work, it expands into the path of MachO binary that links to the library (in your example to os.path.abspath(netCDF4.so). That can be used to point to a fixed location in the sys.prefix tree, the relative path for every extension could be different but would be known at build time. It might require a macholib step when building installers, but that shouldn't be a problem. @rpath could also work for installs outside of virtualenv-s, but would require changes to the Python build. Ronald P.S. I need to check if macholib (and hence py2app) supports @loader_path, but adding such support shouldn't be hard as the semantics are pretty easy. _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org http://mail.python.org/mailman/listinfo/pythonmac-sig unsubscribe: http://mail.python.org/mailman/options/Pythonmac-SIG
