> > [EMAIL PROTECTED] schrieb am 20.12.2005 22:25:28: > >> > First question: Is it possible to link against a normally built Python >> > extension? >> > >> > More specifically, I want to pass the '.so' file of some Python > extension >> > as an extra link argument to the 'weave.inline' function. This seems >> to >> > work quite well on Linux. But I suspect, on Mac OS X the answer is > 'no'. >> > I just want this confirmed. >> >> No. That's not the right way to do it anyway, you need to make a table > of >> pointers available as a PyCObject or similar and get at it that way. > Look >> at how something like Numeric exports its interface. > > After some hours of googling, reading and blind trying I now (hopefully) > understand why: On OS X a Python extension is not a "shared object" (in > the > Linux sense) and not a dynamic library, but a (Mach-O) bundle, and a > Mach-O > bundle is more similar to an executable file than to an object file. In > particular: It cannot be input to the linker again. Dead end. Period. > Correct?
Correct. I think it might be possible to use a MH_DYLIB as a Python extension just by implementation detail, but distutils doesn't link that way and you shouldn't. Using a table of function pointers is the only right way to share C functionality between Python extensions, despite what you're able to make work on one platform or another. -bob _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org http://mail.python.org/mailman/listinfo/pythonmac-sig
