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From: "Scott Schappell" <archon@silvertree.org>
To: <freebsd-questions@freebsd.org>
Subject: Can't upgrade ports,
 undefined symbol error in Python 2.7 _io.so when compiling
Date: Mon, 10 Oct 2016 11:04:32 -0700
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I've tried searching, I've tried installing python2.7 from packages instead
of ports, tried various config options for python 2.7 but I can't seem to
figure this on out:


===>  Building for jsoncpp-1.7.7
SCons import failed. Unable to find engine files in:
  /usr/local/bin/../engine
  /usr/local/bin/scons-local-2.5.0
  /usr/local/bin/scons-local
  /usr/local/lib/scons-2.5.0
  /usr/local/lib/scons-2.5.0
  /usr/lib/scons-2.5.0
  /usr/local/lib/python2.7/site-packages/scons-2.5.0
  /usr/local/lib/python2.7/site-packages/scons-2.5.0
  /usr/lib/python2.7/site-packages/scons-2.5.0
  /usr/local/lib/scons-2.5.0
  /usr/local/lib/scons
  /usr/local/lib/scons
  /usr/lib/scons
  /usr/local/lib/python2.7/site-packages/scons
  /usr/local/lib/python2.7/site-packages/scons
  /usr/lib/python2.7/site-packages/scons
  /usr/local/lib/scons
Traceback (most recent call last):
  File "/usr/local/bin/scons", line 190, in <module>
    import SCons.Script
  File "/usr/local/lib/scons-2.5.0/SCons/Script/__init__.py", line 77, in
<module>
    import SCons.Environment
  File "/usr/local/lib/scons-2.5.0/SCons/Environment.py", line 55, in
<module>
    import SCons.Platform
  File "/usr/local/lib/scons-2.5.0/SCons/Platform/__init__.py", line 52, in
<module>
    import tempfile
  File "/usr/local/lib/python2.7/tempfile.py", line 32, in <module>
    import io as _io
  File "/usr/local/lib/python2.7/io.py", line 51, in <module>
    import _io
ImportError: /usr/local/lib/python2.7/lib-dynload/_io.so: Undefined symbol
"_PyCodec_LookupTextEncoding"
*** Error code 1

Stop.
make: stopped in /usr/ports/devel/jsoncpp

I'm somewhat at my wit's end on this one.  I tried reading through
/usr/ports/UPDATING but couldn't readily find anything relevant. Any
suggestions?

Scott