OS 10.5 build 64 bits

[Robin Becker]

I'm trying to build Python from the unix sources on an OS 10.5 machine. This is
because we're getting strange faults when using the built in python 2.5
together with some precompiled versions of MySQLdb PIL etc etc.

The build works if I use python2.6 and with one minor fix I can get all the
extensions built and apparently working. However, there are some minor problems
with deprecated code inside the version of django we're using.

I then tried to build against Python2.5. All the extensions build cleanly except
for MySQLdb. I'm now getting

In file included from /Users/rptlab/PYTHON/include/python2.5/Python.h:57,
from pymemcompat.h:10,
from _mysql.c:29:
/Users/rptlab/PYTHON/include/python2.5/pyport.h:761:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."

and related

In file included from _mysql.c:35:
/usr/local/mysql/include/mysql/my_config.h:1095:1: warning: "SIZEOF_LONG" redefined
In file included from /Users/rptlab/PYTHON/include/python2.5/Python.h:8,
from pymemcompat.h:10,
from _mysql.c:29:
/Users/rptlab/PYTHON/include/python2.5/pyconfig.h:814:1: warning: this is the location of the previous definition

I assume that's because MySQLdb wants to get settings from the mysql_config file
and the database is compiled in 64 bit mode whilst by default python seems to be
building 32 bit.

Is there some magic I can try to make the OS 10.5 build as 64 bits? I don't see
any options to do that in the configure script.

Also is it reasonable to expect MySQLdb to operate in both camps ie 32 bit on
the python side and 64 bit on the mysql side. We didn't see any obvious errors
with the 2.6 build, but our testing was not extensive.

 

[Lawrence D'Oliveiro]

Is there some magic I can try to make the OS 10.5 build as 64 bits?

Bear in mind OS X isn't really 64-bit, it's still only a 32-bit kernel.

 

[Robert Kern]

Bear in mind OS X isn't really 64-bit, it's still only a 32-bit kernel.

Well, you can compile and execute 64-bit user-space programs (including Python,
with some effort), so I'm not really sure what you mean here. What practical
effect does it having "still only a 32-bit kernel" have on the hopeful 64-bit
Python programmer?

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco