Huge problem gettng MySQLdb to work on my mac mini running Macosx 10.5 Leopard

Graham Dumpleton Graham.Dumpleton at gmail.com
Thu Mar 20 00:47:00 CET 2008


On Mar 19, 9:30 pm, geert <ge... at nznl.com> wrote:
> On Mar 19, 2:26 am, Graham Dumpleton <Graham.Dumple... at gmail.com>
> wrote:
>
>
>
> > On Mar 19, 9:47 am, geert <ge... at nznl.com> wrote:
>
> > > On Mar 18, 6:56 pm, geert <ge... at nznl.com> wrote:
>
> > > > On Mar 14, 1:15 pm, martin.lal... at gmail.com wrote:
>
> > > > > look athttp://groups.google.be/group/comp.lang.python/browse_thread/thread/d...
>
> > > > > There is a macpython list that you can consult athttp://www.nabble.com/Python---pythonmac-sig-f2970.html
>
> > > > Just wanted to let you know that I've solved my problem. The solution
> > > > is to compile mysql using
>
> > > > MACOSX_DEPLOYMENT_TARGET=10.5 \
> > > > CFLAGS='-arch i386 -arch x86_64 -arch ppc7400 -arch ppc64' \
> > > > LDFLAGS='-arch i386 -arch x86_64 -arch ppc7400 -arch ppc64' \
> > > > CXXFLAGS='-arch i386 -arch x86_64 -arch ppc7400 -arch ppc64' \
> > > > ./configure --disable-dependency-tracking  --enable-thread-safe-client
> > > > --prefix=/usr/local/mysql
>
> > > > You then go this way to get it running on your machine:
>
> > > >http://hivelogic.com/articles/installing-mysql-on-mac-os-x/
>
> > > > Then reinstall MySQLdb. Magic!
>
> > > > Geert
>
> > > Seems that I've yelled success to quickly. Everything's ok as long as
> > > I just run the django dev server, but moving to apache throughmod_wsgibrings a well-known but less than comforting complaint:
>
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]mod_wsgi(pid=2352):
> > > Exception occurred processing WSGI script '/Users/geert/Sites/LithoNET/
> > > LN/LNApache.wsgi'., referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1] Traceback (most recent
> > > call last):, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]   File "/Library/
> > > Python/2.5/site-packages/django/core/handlers/wsgi.py", line 205, in
> > > __call__, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]     response =
> > > self.get_response(request), referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]   File "/Library/
> > > Python/2.5/site-packages/django/core/handlers/base.py", line 64, in
> > > get_response, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]     response =
> > > middleware_method(request), referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]   File "/Library/
> > > Python/2.5/site-packages/django/contrib/sessions/middleware.py", line
> > > 13, in process_request, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]     engine =
> > > __import__(settings.SESSION_ENGINE, {}, {}, ['']), referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]   File "/Library/
> > > Python/2.5/site-packages/django/contrib/sessions/backends/db.py", line
> > > 2, in <module>, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]     from
> > > django.contrib.sessions.models import Session, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]   File "/Library/
> > > Python/2.5/site-packages/django/contrib/sessions/models.py", line 5,
> > > in <module>, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]     from django.db
> > > import models, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]   File "/Library/
> > > Python/2.5/site-packages/django/db/__init__.py", line 17, in <module>,
> > > referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]     backend =
> > > __import__('%s%s.base' % (_import_path, settings.DATABASE_ENGINE), {},
> > > {}, ['']), referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]   File "/Library/
> > > Python/2.5/site-packages/django/db/backends/mysql/base.py", line 12,
> > > in <module>, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1]     raise
> > > ImproperlyConfigured("Error loading MySQLdb module: %s" % e), referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1] ImproperlyConfigured:
> > > Error loading MySQLdb module: dlopen(/Library/WebServer/.python-eggs/
> > > MySQL_python-1.2.2-py2.5-macosx-10.5-i386.egg-tmp/_mysql.so, 2): no
> > > suitable image found.  Did find:, referer:http://localhost/images/
> > > [Tue Mar 18 23:34:25 2008] [error] [client ::1] \t/Library/
> > > WebServer/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-i386.egg-
> > > tmp/_mysql.so: no matching architecture in universal wrapper, referer:http://localhost/images/
>
> > Did you again confirm that running:
>
> >   file /Library/WebServer/.python-eggs/MySQL_python-1.2.2-py2.5-
> > macosx-10.5-i386.egg-tmp/_mysql.so
>
> > shows the .so having the required architectures, specifically what
> > Apache runs as (eg. x86_64)?
>
> > Do the gcc compiler flags when building and linking the .so file show
> > all the architecture flags?
>
> > Have you empty the Python egg cache to make sure it isn't an older
> > compiled version?
>
> > Graham
>
> Hi all,
>
> GOT IT!
>
> I have every running now. So, to sum it all up:
>
> I'm on a new intel mac with a 64-bit capable processor running macosx
> 10.5.2.
>
> I have httpd (apache2) running as a 64 bit app, which it would of
> course on a 64-bit machine. Activity monitor confirms this.
>
> I compiled mysql from source, configured as stated below:
>
> MACOSX_DEPLOYMENT_TARGET=10.5 \
> CFLAGS='-arch i386 -arch x86_64 -arch ppc7400 -arch ppc64' \
> LDFLAGS='-arch i386 -arch x86_64 -arch ppc7400 -arch ppc64' \
> CXXFLAGS='-arch i386 -arch x86_64 -arch ppc7400 -arch ppc64' \
> ./configure --disable-dependency-tracking  --enable-thread-safe-
> client
> --prefix=/usr/local/mysql
>
> Then camemod_wsgi, just out of the box.
>
> Then came MySQLdb.
>
> Extracted the tar, then edited _mysql.c. Commented lines 37 - 39:
>
> //#ifndef uint
> //#define uint unsigned int
> //#endif
>
> and changed this:
>         uint port = MYSQL_PORT;
>         uint client_flag = 0;
>
> to this:
>         unsigned int port = MYSQL_PORT;
>         unsigned int client_flag = 0;
>
> on lines 484 and 485
>
> Then - but I don't know if this is really (always) necessary, in
> site.cfg I changed Threadsafe = True to False.
>
> I set the ARCHFLAGS, but I don't think this helped one inch.
>
> ARCHFLAGS='-arch ppc -arch ppc64 -arch i386 -arch x86_64'
>
> OK. So then I went sudo python setup.py build. (I realise that the
> sudo isn't required just to do a build)
>
> There, I noticed this:
>
> creating build/temp.macosx-10.5-i386-2.5
> gcc -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-
> madd -fno-common -dynamic -DNDEBUG -g -Os -Wall -Wstrict-prototypes -
> DMACOSX -I/usr/include/ffi -DENABLE_DTRACE -pipe -
> Dversion_info=(1,2,2,'final',0) -D__version__=1.2.2 -I/usr/local/mysql/
> include/mysql -I/System/Library/Frameworks/Python.framework/Versions/
> 2.5/include/python2.5 -c _mysql.c -o build/temp.macosx-10.5-i386-2.5/
> _mysql.o -arch i386 -arch x86_64 -arch ppc7400 -arch ppc64
>
> You see, here _mysql.o is being created. If you do file _mysql.o, you
> get:
>
> /Users/geert/Desktop/MySQL-python-1.2.2/build/temp.macosx-10.5-
> i386-2.5/_mysql.o: Mach-O universal binary with 4 architectures
> /Users/geert/Desktop/MySQL-python-1.2.2/build/temp.macosx-10.5-
> i386-2.5/_mysql.o (for architecture i386):      Mach-O object i386
> /Users/geert/Desktop/MySQL-python-1.2.2/build/temp.macosx-10.5-
> i386-2.5/_mysql.o (for architecture x86_64):    Mach-O 64-bit object
> x86_64
> /Users/geert/Desktop/MySQL-python-1.2.2/build/temp.macosx-10.5-
> i386-2.5/_mysql.o (for architecture ppc7400):   Mach-O object ppc
> /Users/geert/Desktop/MySQL-python-1.2.2/build/temp.macosx-10.5-
> i386-2.5/_mysql.o (for architecture ppc64):     Mach-O 64-bit object ppc64
>
> which is ok.
>
> But, strangely, when _mysql.so is created in the next step, gcc
> doesn't add all the arch flags:
>
> gcc -Wl,-F. -bundle -undefined dynamic_lookup -arch i386 -arch ppc
> build/temp.macosx-10.5-i386-2.5/_mysql.o -L/usr/local/mysql/lib/mysql -
> lmysqlclient -lz -lm -o build/lib.macosx-10.5-i386-2.5/_mysql.so
>
> and you end up with this:
>
> geert-dekkerss-imac:MySQL-python-1.2.2 geert$ file /Users/geert/
> Desktop/MySQL-python-1.2.2/build/lib.macosx-10.5-i386-2.5/_mysql.so
> /Users/geert/Desktop/MySQL-python-1.2.2/build/lib.macosx-10.5-i386-2.5/
> _mysql.so: Mach-O universal binary with 2 architectures
> /Users/geert/Desktop/MySQL-python-1.2.2/build/lib.macosx-10.5-i386-2.5/
> _mysql.so (for architecture i386):      Mach-O bundle i386
> /Users/geert/Desktop/MySQL-python-1.2.2/build/lib.macosx-10.5-i386-2.5/
> _mysql.so (for architecture ppc7400):   Mach-O bundle ppc
>
> which is most definitely NOT ok.
>
> So I did this:
>
> sudo gcc -Wl,-F. -bundle -undefined dynamic_lookup -arch ppc -arch
> ppc64 -arch i386 -arch x86_64 build/temp.macosx-10.5-i386-2.5/_mysql.o
> -L/usr/local/mysql/lib/mysql -lmysqlclient -lz -lm -o build/
> lib.macosx-10.5-i386-2.5/_mysql.so
>
> adding the arch flags myself, and running gcc again, under sudo.
>
> and lo and behold....
>
> geert-dekkerss-imac:MySQL-python-1.2.2 geert$ file /Users/
> geert/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-i386.egg-tmp/
> _mysql.so
> /Users/geert/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-
> i386.egg-tmp/_mysql.so: Mach-O universal binary with 4 architectures
> /Users/geert/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-
> i386.egg-tmp/_mysql.so (for architecture ppc7400):      Mach-O bundle ppc
> /Users/geert/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-
> i386.egg-tmp/_mysql.so (for architecture ppc64):        Mach-O 64-bit bundle
> ppc64
> /Users/geert/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-
> i386.egg-tmp/_mysql.so (for architecture i386): Mach-O bundle i386
> /Users/geert/.python-eggs/MySQL_python-1.2.2-py2.5-macosx-10.5-
> i386.egg-tmp/_mysql.so (for architecture x86_64):       Mach-O 64-bit bundle
> x86_64
>
> Well, it only took 20 years off my life span and all the hairs on my
> head :)

I don't have access to MacOS X OS supplied Python 2.5 at moment, but
if distutils used by setup.py is ignoring ARCHFLAGS for the link then
that may be an issue with distutils. More likely though is that MySQL
setup.py is setting some option which is causing ARCHFLAGS to be
ignored.

Strange thing is I can't find ARCHFLAGS in original Python 2.5 source
I have, so checking it may be specific to MacOS X OS supplied Python.

Will need to check when I get home to my Leopard box.

Graham



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