On 06. 11. 19 11:41, Alexander Bokovoy wrote:
Python extension modules embedding Python and linking to libpython
- needs to be evaluated case by case
- changes to cmake/autotools are needed
- changes in code might be necessary as well
- if not changed, might misbehave
- Python Maint will provide help if asked for
Do you have a list of affected packages?
We anticipate that the number of affected packages that actually need to link to
libpython from extension modules is (very close to) 0.
But no, we don't have a list yet. We intent to go package by package (see the
list in the proposal) and examine the reason the file is linked to libpython.
We are aware about samba linking to libpython and we anticipate changes will be
needed. This was already semi-discussed when samba libs didn't build with Python
3.8.
Samba (and thus SSSD and FreeIPA) is affected. It is pretty fundamental
that Samba modules link to libpython and I think it was designed so by
you guys (Python team at Red Hat) when we ported Samba bindings to Python3.
Why is it fundamental to link extension modules to libpython?
I wasn't directly involved with porting Samba, looping Lumír in.
However note that when samba was ported, it was common to ink Python extension
to libpython by default.
# find /usr/lib64/python3.7/site-packages/samba -name '*.so' | xargs -n1 -I '{}'
sh -c "ldd {} | egrep -q libpython && echo 'LINKED: {}' "
LINKED:
/usr/lib64/python3.7/site-packages/samba/_glue.cpython-37m-x86_64-linux-gnu.so
...
On Python 3.7, extension modules are linked to libpython by default.
On Python 3.8, extension modules are only linked to libpython if explicitly told
so by the build system, such as sambas's waf.
Extension modules built with distutils/setuptools are not linked to libpython.
Important pointer:
https://bugzilla.redhat.com/show_bug.cgi?id=1711638#c8 ... #c34
--
Miro Hrončok
--
Phone: +420777974800
IRC: mhroncok
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