Re: Undefined symbol while executing Python

[Joel Brobecker <brobecker at adacore dot com>]

> > (gdb) python import itertools
> > Traceback (most recent call last):
> >  File "<string>", line 1, in ?
> > ImportError: /usr/lib/python2.4/lib-dynload/itertoolsmodule.so: undefined symbol: PyObject_SelfIter
> > Error while executing Python code.
[...]
> More...  The symbol is defined in libpython2.4.so.  The native 7.0.1
> gdb has that library in its required libraries list.  The cross 7.2
> gdb I built does not.  That makes sense, it alllows that gdb to be
> executed on another machine that might not have the same python
> installed.  

Is GDB linked against the shared libpython? From what you are saying,
it seems like it is.  But I know that there are problems when linking
against the static version of libpython.  I have the following change
in python-config.py to deal with the same sort of issue after I linked
GDB with the static libpython.

+                if platform.system() == 'Linux':
+                    # Make sure that the loader can resolve symbols from
+                    # the libpython archive when loading modules implemented
+                    # as DSOs (Eg: "import time").  This is to work around
+                    # a side-effect of linking against the static version
+                    # of libpython.
+                    libs.insert(0, '-Xlinker -export-dynamic')

-- 
Joel