Re: Build error with wip/kdebindings4-python (issue for Python < 2.5)

["David H. Gutteridge" <dhgutteridge%sympatico.ca@localhost>]

On Monday, 2 Feb 2009 23:30:00 Mark Davies wrote:
>From: Mark Davies <mark%ecs.vuw.ac.nz@localhost>
>To: pkgsrc-wip-discuss%lists.sourceforge.net@localhost
>CC: "David H. Gutteridge" <dhgutteridge%sympatico.ca@localhost>
>Subject: Re: Build error with wip/kdebindings4-python (issue for Python < 
>2.5)
>Date: Mon, 2 Feb 2009 23:30:00 +1300
>
>On Monday 02 February 2009 18:09:01 David H. Gutteridge wrote:
> > I've confirmed that rebuilding against python25-2.5.2nb4 avoids this
> > problem; everything compiles and installs successfully.
> >
> > So I think either the package needs to be marked as requiring Python
> > 2.5 or above, or else there needs to be a patch to fix this issue if a
> > user's employing an older version of Python?
>
>Yeah, I've never tried building it with 2.4.  I'll happily take a patch if
>you have one.
>
>cheers
>mark

Hi Mark,

The diff the Python developers applied for 2.5 is here:
http://svn.python.org/view/python/trunk/Include/object.h?rev=42531&r1=42410&r2=42531

--- python/trunk/Include/object.h       2006/02/16 14:24:38     42410
+++ python/trunk/Include/object.h       2006/02/20 22:27:28     42531
@@ -345,7 +345,7 @@
typedef struct _heaptypeobject {
        /* Note: there's a dependency on the order of these members
           in slotptr() in typeobject.c . */
-       PyTypeObject type;
+       PyTypeObject ht_type;
        PyNumberMethods as_number;
        PyMappingMethods as_mapping;
        PySequenceMethods as_sequence; /* as_sequence comes after as_mapping,
@@ -354,13 +354,13 @@
                                          a given operator (e.g. __getitem__).
                                          see add_operators() in typeobject.c . 
*/
        PyBufferProcs as_buffer;
-       PyObject *name, *slots;
+       PyObject *ht_name, *ht_slots;
        /* here are optional user slots, followed by the members. */
} PyHeapTypeObject;

/* access macro to the members which are floating "behind" the object */
#define PyHeapType_GET_MEMBERS(etype) \
-    ((PyMemberDef *)(((char *)etype) + 
(etype)->type.ob_type->tp_basicsize))
+    ((PyMemberDef *)(((char *)etype) + 
(etype)->ht_type.ob_type->tp_basicsize))


/* Generic type check */

But one of the Python developers notes "it may break existing
applications", which is why it wasn't applied against 2.4.  I haven't
tried the patch (I just upgraded to Python 2.5 instead, which I really
wanted anyway, it's just pkgsrc defaults to 2.4 right now it seems), I
assume it would work for these purposes, but I suppose it might break
something else if it got applied against the python24 package.

Incidentally, the rest of the KDE 4.2 build went quite smoothly for me.

Regards,

Dave



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