I am unable to get the Python-based protobuf library with the cpp_implementation optimization working against Anaconda (https://store.continuum.io/cshop/anaconda/).

I've ensured I don't have another installation of the protobuf libraries somewhere on my system. I can successfully build the protobuf library. "python setup.py build --cpp_implementation" also successfully runs.

However, when I run "python setup.py test --cpp_implementation" I get the following error:

Traceback (most recent call last):
File "setup.py", line 200, in
"Protocol Buffers are Google's data interchange format.",
File "/Users/bradneuberg/anaconda/lib/python2.7/distutils/core.py", line 151, in setup
dist.run_commands()
File "/Users/bradneuberg/anaconda/lib/python2.7/distutils/dist.py", line 953, in run_commands
self.run_command(cmd)
File "/Users/bradneuberg/anaconda/lib/python2.7/distutils/dist.py", line 972, in run_command
cmd_obj.run()
File "/Users/bradneuberg/anaconda/lib/python2.7/site-packages/setuptools-18.0.1-py2.7.egg/setuptools/command/test.py", line 142, in run
File "/Users/bradneuberg/anaconda/lib/python2.7/site-packages/setuptools-18.0.1-py2.7.egg/setuptools/command/test.py", line 122, in with_project_on_sys_path
File "/Users/bradneuberg/anaconda/lib/python2.7/site-packages/setuptools-18.0.1-py2.7.egg/setuptools/command/test.py", line 163, in run_tests
File "/Users/bradneuberg/anaconda/lib/python2.7/unittest/main.py", line 94, in init
self.parseArgs(argv)
File "/Users/bradneuberg/anaconda/lib/python2.7/unittest/main.py", line 149, in parseArgs
self.createTests()
File "/Users/bradneuberg/anaconda/lib/python2.7/unittest/main.py", line 158, in createTests
self.module)
File "/Users/bradneuberg/anaconda/lib/python2.7/unittest/loader.py", line 130, in loadTestsFromNames
suites = [self.loadTestsFromName(name, module) for name in names]
File "/Users/bradneuberg/anaconda/lib/python2.7/unittest/loader.py", line 115, in loadTestsFromName
test = obj()
File "/usr/local/protobuf-2.6.1/python/setup.py", line 89, in MakeTestSuite
import google.protobuf.pyext.descriptor_cpp2_test as descriptor_cpp2_test
File "/usr/local/protobuf-2.6.1/python/google/protobuf/pyext/descriptor_cpp2_test.py", line 47, in
from google.protobuf.internal.descriptor_test import *
File "/usr/local/protobuf-2.6.1/python/google/protobuf/internal/descriptor_test.py", line 38, in
from google.protobuf import unittest_custom_options_pb2
File "/usr/local/protobuf-2.6.1/python/google/protobuf/unittest_custom_options_pb2.py", line 7, in
from google.protobuf import descriptor as _descriptor
File "/usr/local/protobuf-2.6.1/python/google/protobuf/descriptor.py", line 50, in
from google.protobuf.pyext import _message
ImportError: dlopen(/usr/local/protobuf-2.6.1/python/google/protobuf/pyext/_message.so, 2): Symbol not found: __ZNK6google8protobuf10TextFormat17FieldValuePrinter10PrintBytesERKSs
Referenced from: /usr/local/protobuf-2.6.1/python/google/protobuf/pyext/_message.so
Expected in: dynamic lookup

Full output of all my build steps and the final error in this gist: https://gist.github.com/BradNeuberg/01ff8633549e382f305b

The strange thing is I can get everything working if I use the Mac OS X system python (Python 2.7.6), but not Anaconda.

My environment:
Anaconda/Python: Python 2.7.10 :: Anaconda 2.1.0 (x86_64)
Mac OS X 10.10.4 (Yosemite)
Protobuf download (not git checkout) 2.6.1

GCC details:
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.4.0
Thread model: posix

Xcode command line tools installed (but not the full Xcode), version 6.4