Hi Robin,
On 2008-10-23 17:55, Robin Becker wrote:
> 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
That looks like a classical name clash between C header files.
It also suggests that you have 64-bit client libs of MySQL
installed.
> 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.
As long as the MySQL client lib is built as 32-bit lib, you shouldn't
have a problem.
> 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.
The config options --with-universal-archs is used for this. In theory
you could build a 4-way binary for Intel,PPC/32-bit,64-bit.
Default is 32-bit only.
> 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.
As long as the MySQL wire protocol doesn't get in the way, this
should be possible - again, provided you compile the MySQL client
libs as 32-bit.
--
Marc-Andre Lemburg
eGenix.com
Professional Python Services directly from the Source (#1, Oct 23 2008)
>>> Python/Zope Consulting and Support ... http://www.egenix.com/
>>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/
>>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/
________________________________________________________________________
:::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free ! ::::
eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48
D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
Registered at Amtsgericht Duesseldorf: HRB 46611