Successfully built and packaged the Python-3.9.0 distribution tar archive without modification - as 32-bit.

Repeating the same process with the following environment change:

 # export OBJECT_MODE=64

fails with a segmentation fault by the "first-phase" python executable:

```
        ../src/py39-3.9.0/Modules/makexp_aix Modules/python.exp "." libpython3.9.a
         xlc_r     -Wl,-bE:Modules/python.exp -lld -o python Programs/python.o libpython3.9.a -lintl -ldl  -lm   -lm
         ./python -E -S -m sysconfig --generate-posix-vars ; if test $? -ne 0 ; then  echo "generate-posix-vars failed" ;  rm -f ./pybuilddir.txt ;  exit 1 ;  fi
/bin/sh: 6291700 Segmentation fault(coredump)
make: 1254-004 The error code from the last command is 139.


Stop.
root@x066:[/data/prj/python/py39-3.9.0]./python -E -S -m sysconfig --generate-posix-vars
Segmentation fault(coredump)
root@x066:[/data/prj/python/py39-3.9.0]./python
Segmentation fault(coredump)
```

Will try to duplicate in a second environment.