Dear Sage-Support, off-list, Robert pointed me to the source of the problem.
In my original setup.py, I used the optional parameter ext_package, according to http://docs.python.org/distutils/setupscript.html: ------------- If you have a number of extensions all in the same package (or all under the same base package), use the ext_package keyword argument to setup(). For example, setup(..., ext_package='pkg', ext_modules=[Extension('foo', ['foo.c']), Extension('subpkg.bar', ['bar.c'])], ) will compile foo.c to the extension pkg.foo, and bar.c to pkg.subpkg.bar. ------------ Robert pointed out that this is not supported by Cython. With examples, we found that it *is* supported if one only has .pyx-files, but it fails as soon as one has .pxd-files. One has to provide the fully qualified package name. Moreover, in order to get the right package name hardcoded into the modules, the source directory names have to match the package name. I changed my sources and setup.py accordingly, removed the build/ directory that was created by "python setup.py install", and tried again -- and still it failed! Robert then pointed out that it does not suffice to remove (or empty) the build/ directory --- I was not aware that the Cython-generated c- files for the extension modules reside in the source directory. They have to be removed, too, before rebuilding. Now it works, including pickling. Thank you, Robert! Simon --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
