Unable to build (functional) Python3 bindings

[protogeezer]

Per Bryan Parsons suggestion for taking a quick and dirty shot with generating Python3 bindings, I created a CustomPythonSetup.cmake file pointing to my local anaconda 3.6 installation, then built (on OS X 10.12.4) with the command:

et-imac-retina:gpstk-2.9 sjbespa$ sudo ./build.sh -b/Users/sjbespa/work/gpstk/gpstk-2.9-build3 -j8 -eu -P/Users/sjbespa/anaconda/bin/python 

The resulting bindings don't seem to export any symbols, although the module is about the right size (vis-a-vis the python2 bindings):
Last login: Wed Apr 12 09:25:28 on ttys004

et-imac-retina:~ sjbespa$ python
Python 3.6.0 |Anaconda 4.3.1 (x86_64)| (default, Dec 23 2016, 13:19:00) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import gpstk
>>> dir(gpstk)
['__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__']
>>> gpstk.__path__
['/Users/sjbespa/.local/lib/python3.6/site-packages/gpstk']

Any ideas on how to attack the problem would be greatly appreciated... I see elsewhere on the GPSTK website that the current bindings were conceived "with an eye towards python 2." It would help to understand what that comment means.

[spacefan]

You should use python 2 (version >= 2.7.2) instead of python 3

[UT-dave]

ARL will release a new version of GPSTk later this summer with udpated Python bindings.