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Building Python as a shared lib plugin.

Chachkoff Yann yann.chachkoff at mailandnews.com
Thu Aug 30 09:00:58 EDT 2001 
> > > The '-Xlinker' tells gcc to pass '-export-dynamic' to ld. gcc itself
> > > seems to ignore it otherwise.
> >
> > I of course tried this first (I always read manuals before working). It
> > does not work. I tried the following one:
> >
> > $(CC) $(FLAGS) -shared -Wl,-soname,plugin_python.so.0 $(OBJECTS)
> > ../common/libcross.a -Xlinker -export-dynamic
> > /usr/lib/python2.0/config/libpython2.0.a -lpthread -lutil -ldmalloc -o
> > plugin_python.so.0.1

> Sorry, in tests that I did gcc silently ignored '-export-dynamic' when
> passed to it, so I thought that that might have been the problem.
>
I think I need to apologize myself... Your idea was good indeed, and I had 
been unclear in my terms. I thank you for your support.

> OTOH...
>
> From the ld man page:
>
> "
>        --whole-archive
>               For each archive mentioned on the command line  af­
>               ter  the  --whole-archive option, include every ob­
>               ject file in the archive in the link,  rather  than
>               searching  the  archive  for  the  required  object
>               files.  This is normally used to  turn  an  archive
>               file into a shared library, forcing every object to
>               be included in the resulting shared library.
> "
>
> If I understand correctly, you may need to add '-Xlinker --whole-archive'
> before python2.0.a.

That's an idea I didn't tried before, so I did.
Unfortunately, it does not seemed to solve the problem - I always get the 
same error.
I did some new variations around; I replaced the "gcc" command with direct 
calls to "ld". I tried numerous combinations using --whole-archive, -E (and 
others too; for example, I tried to link in more than one line using -r to be 
able to "fine-tune" options for each linked library).
Whatever I did, the problem stayed the same.
I ask now a new question: has anyone already tried to make a shared library 
dynamically loaded with the Python interpreter ? Is it even possible (I 
suppose it is, but I do not know how) ? If yes, can you tell me where I am 
wrong ?

Chachkoff Y.
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