After upgrading subversion on my svn server, I started seeing this errors from viewvc:
An Exception Has Occurred
Python Traceback
Traceback (most recent call last):
File "/usr/local/viewvc/lib/viewvc.py", line 4827, in main
request.run_viewvc()
File "/usr/local/viewvc/lib/viewvc.py", line 251, in run_viewvc
self.rootpath = vclib.svn.canonicalize_rootpath(rootpath)
File "/usr/local/viewvc/lib/vclib/svn/__init__.py", line 39, in canonicalize_rootpath
rootpath = _canonicalize_path(rootpath)
File "/usr/local/viewvc/lib/vclib/svn/__init__.py", line 23, in _canonicalize_path
import svn.core
File "/usr/local/lib/python2.7/site-packages/svn/core.py", line 26, in
from libsvn.core import *
File "/usr/local/lib/python2.7/site-packages/libsvn/core.py", line 26, in
_core = swig_import_helper()
File "/usr/local/lib/python2.7/site-packages/libsvn/core.py", line 22, in swig_import_helper
_mod = imp.load_module('_core', fp, pathname, description)
ImportError: /usr/local/lib/python2.7/site-packages/libsvn/_core.so: Undefined symbol "svn_uri__is_child"
… when viewing https://svn.example.org/. And:
An Exception Has Occurred
Python Traceback
Traceback (most recent call last):
File "/usr/local/viewvc/lib/viewvc.py", line 4827, in main
request.run_viewvc()
File "/usr/local/viewvc/lib/viewvc.py", line 402, in run_viewvc
self.view_func(self)
File "/usr/local/viewvc/lib/viewvc.py", line 2177, in view_roots
allroots = list_roots(request)
File "/usr/local/viewvc/lib/viewvc.py", line 4648, in list_roots
cfg.options.svn_config_dir)
File "/usr/local/viewvc/lib/vclib/svn/__init__.py", line 95, in SubversionRepository
rootpath = canonicalize_rootpath(rootpath)
File "/usr/local/viewvc/lib/vclib/svn/__init__.py", line 39, in canonicalize_rootpath
rootpath = _canonicalize_path(rootpath)
File "/usr/local/viewvc/lib/vclib/svn/__init__.py", line 23, in _canonicalize_path
import svn.core
File "/usr/local/lib/python2.7/site-packages/svn/core.py", line 26, in
from libsvn.core import *
File "/usr/local/lib/python2.7/site-packages/libsvn/core.py", line 26, in
_core = swig_import_helper()
File "/usr/local/lib/python2.7/site-packages/libsvn/core.py", line 22, in swig_import_helper
_mod = imp.load_module('_core', fp, pathname, description)
ImportError: /usr/local/lib/python2.7/site-packages/libsvn/_core.so: Undefined symbol "svn_uri__is_child"
.. when viewing https://svn.example.org/viewvc.cgi/stuxnet/
The solution: upgraded devel/py-subversion. In my case, I upgraded from 1.7.9_1 to 1.8.0_1. I think perhaps just a rebuild would have been sufficient.
But along the way I also upgraded viewvc (via portupgrade -f), which I now believe to have been unnecessary.
