Re: Deltarpm python3 build failure

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On Sat, 1 Jan 2011, Jonathan Dieter wrote:

> On Sat, 2011-01-01 at 12:22 -0800, Toshio Kuratomi wrote:
>> On Fri, Dec 31, 2010 at 05:38:30PM +0200, Jonathan Dieter wrote:
>>> I now seem to be running into some problems building deltarpm for
>>> Rawhide and it seems to be tied into this.  See
>>> http://koji.fedoraproject.org/koji/buildinfo?buildID=212117 for more
>>> details.
>>
>> Which is happening because the module is being installed to
>> %{_libdir}/python3.2mu/site-packages
>>
>> So, yes, the Makefiles need to be changed.  The way they're detecting which
>> versions of python to build for are a bit hacky and definitely broken in
>> this instance.
>>
>> I would instead code something that uses the python interpreter or config
>> scripts to tell what needs to be done.
>>
>> You can adapt code like this to your needs:
>>
>> for PY in python python3 ; do
>>   PYLIB=`$PY -c 'from distutils import sysconfig ; print(sysconfig.get_python_lib(1))'`
>>   PYVER=`$PY -c 'from distutils import sysconfig ; print(sysconfig.get_python_version)'`
>>   PYCFLAGS=`$PY-config --cflags`
>>   PYLDFLAGS=`$PY-config --ldflags`
>> done
>
> Thanks much.  I had missed the fact that the file was being installed in
> a different directory.  This is a great help.

The deltarpm python3 module has much bigger issues than paths changing:

deltarpmmodule.c: In function 'createDict':
deltarpmmodule.c:25:5: warning: implicit declaration of function 
'PyString_FromString'
deltarpmmodule.c:25:7: warning: assignment makes pointer from integer 
without a cast
deltarpmmodule.c:34:7: warning: assignment makes pointer from integer 
without a cast
deltarpmmodule.c:51:7: warning: assignment makes pointer from integer 
without a cast
deltarpmmodule.c: In function 'init_deltarpm':
deltarpmmodule.c:113:3: warning: implicit declaration of function 
'Py_InitModule'
deltarpmmodule.c:113:5: warning: assignment makes pointer from integer 
without a cast

Python 3 doesn't have PyString_FromString() or Py_InitModule() at all, so 
all the module does now is fail with import error:

[pmatilai@localhost deltarpm]$ python3
Python 3.1.2 (r312:79147, Sep  8 2010, 23:02:57)
[GCC 4.5.1 20100812 (Red Hat 4.5.1-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import deltarpm
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/usr/lib64/python3.1/site-packages/deltarpm.py", line 6, in 
<module>
     import _deltarpm
ImportError: /usr/lib64/python3.1/site-packages/_deltarpmmodule.so: 
undefined symbol: Py_InitModule

I'd suggest simply disabling the broken python3 module for the time being 
to allow deltarpm to be built against the new rpm version. I can help 
fixing the Python version issue once the dust from new rpm landing 
settles.

 	- Panu -

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