RE: Python SVN Bindings on Windows Server 2008 x64

Hi Brian,

The other possible problem I can think of now is that you've got a few
different variants of libapr[|util|iconv] built under different compilers
all accessible from PATH but are binary incompatible with each other. Such a
circumstance can result from using binaries built by different people (the
one that bit me was Apache.org HTTPD built using vc6 and a custom build of
SVN using vc9.) Dependency walker should tell you which functions are
missing; perhaps you could include them, if it is not too many?

From: Brian Ellis [mailto:bellis_at_ticketbiscuit.com]
Sent: Thursday, 17 February, 2011 9:52 PM
To: Cooke, Mark
Cc: users_at_subversion.apache.org
Subject: Re: Python SVN Bindings on Windows Server 2008 x64

Yeah, I copied the files and renamed them so I have both the .dll and .pyd
files in the directory. I also rebooted the server, though I'm not sure why
that would matter. Still no luck :(
____________________________________
Brian Ellis

On Thu, Feb 17, 2011 at 1:11 AM, Cooke, Mark <mark.cooke_at_siemens.com> wrote:

> > From: Brian Ellis [mailto:bellis_at_ticketbiscuit.com]
> > Sent: Wednesday, 16 February, 2011 3:40 AM
> > To: users_at_subversion.apache.org
> > Subject: Python SVN Bindings on Windows Server 2008 x64
> >
> > Hi, sorry if this has been covered before but I'm new to
> > Subversion admin and can't really find a clear answer. My
> > goal is to use the python scripts in subversion\tools,
> > specifically validate-extensions.py in this case. I am
> > running VisualSVN Server 2.15, built on Subversion 1.6.15 and
> > have 32-bit Python 2.7.1 set up on the machine at the moment.
> >
> > When I set up the hook, I got an error that the svn module
> > could not be found. I installed the latest libsvn bindings I
> > could find
> > (http://trac.edgewall.org/attachment/wiki/TracSubversion/svn-w
> in32-1.6.15_py_2.7.zip
> <http://trac.edgewall.org/attachment/wiki/TracSubversion/svn-w
> %0Ain32-1.6.15_py_2.7.zip> from
> http://trac.edgewall.org/wiki/TracSubversion) > but I
> still can't load
> the svn module. If I run 'from svn
> > import repos' from the command line, I get:
> >
> > File "C:\Python27\lib\site-packages\libsvn\core.py", line 21,
> > in swig_import_helper
> > _mod = imp.load_module('_core', fp, pathname, description)
> > ImportError: DLL load failed: The specified procedure could
> > not be found.
> >
> >
> > Am I missing something? I also tried the Python27 64-bit
> > release but precompiled svn bindings don't appear to be
> > available for it and I would prefer not to go through
> > everything required to build them myself.
> >
> > Thank you in advance for your help.
> >
> > Brian Ellis
> >
> > -----Original Message-----
> > From: Joel Low [mailto:joel_at_joelsplace.sg]
> > Sent: 16 February 2011 00:11
> > To: Brian Ellis
> > Cc: users_at_subversion.apache.org
> > Subject: RE: Python SVN Bindings on Windows Server 2008 x64
> >
> > [JL] Hi Brian, you can try to check if the SVN DLLs are
> > accessible from your 32-bit Python (so 32-bit SVN DLLs,
> > Program Files (x86) folder, etc), perhaps by ensuring that
> > the Subversion bin directory is in PATH. Remember that hook
> > scripts are run without environment variables defined so you
> > may have to redefine PATH in your hook script.
> >
> On Wed, Feb 16, 2011 at 3:55 AM, Cooke, Mark
> <mark.cooke_at_siemens.com> wrote:
>
> Hi Brian,
>
> Here are some notes I made for myself about upgrading
> the bindings when
> I upgrade Trac:
>
> ~ deleted the old svn and libsvn directories from
> C:\Python26\Lib\site-packages
>
> ~ opened the python bindings .zip and copied the two directories
> to site-packages
>
> ~ copied all libsvn\_*.dll files to _*.pyd [1]
>
> ~ restarted the server and crossed fingers...
>
> [1] I found this recommended in the t.e.o wiki at
> TracSubversion...
> http://trac.edgewall.org/wiki/TracSubversion#forPython2.6
>
> ...in particular have you copied/renamed the .dll
> files? Hope this
> helps...
>
> ~ Mark C
>
> -----Original Message-----
> From: Brian Ellis [mailto:bellis_at_ticketbiscuit.com]
> Sent: 16 February 2011 23:26
> To: Cooke, Mark
> Cc: Joel Low; users_at_subversion.apache.org
> Subject: Re: Python SVN Bindings on Windows Server 2008 x64
>
> In case it helps, I loaded up the 32-bit depends.exe as
> recommended in the TracSubversion FAQ and tried the load the
> core module from there ('from svn import core'). I receive the error:
>
> LoadLibraryExA("C:\Python27\Lib\site-packages\libsvn\_core.pyd
> ", 0x00000000, LOAD_WITH_ALTERED_SEARCH_PATH) returned NULL.
> Error: The specified procedure could not be found (127).
>
> _core.pyd is located at that path so I'm not sure why it
> can't find it.
> ____________________________________
> Brian Ellis
>
I'm clutching at straws here but did you rename the files or copy/rename
them? I.e. do you just .pyd or both .pyd and .dll? If the former, try
copying back to .dll as well (this is what I have). You will need to
bounce apache (if you are using it)... The information I could find
when I was looking into this was somewhat confused but I seem to
remember I had very similar problems with only one or the other that
were fixed when I kept both.

Just checking the Trac site again
(http://trac.edgewall.org/wiki/TracSubversion#checklist-windows) I
remember reading this before:

 According to the README.txt file for the Subversion bindings, if you
are using Python 2.5+ you need to rename all the .dll files in the
libsvn folder to .pyd files. Upon further research,
http://www.python.org/doc/faq/windows/#is-a-pyd-file-the-same-as-a-dll
indicates you may need to have both the .pyd and .dll version of the
libsvn files available. This resolved both the 'ImportError: No module
named _core' error (with only the DLL) and the 'ImportError: DLL load
failed' (with only the pyd) when testing from the console, and the
browser.

...I hope this fixes it!

~ mark c