Shapely: OSX (10.10.5) fails to load GEOX framework

[mromanie]

I'm running OS X 10.10.5 and python, GEOS and shapely from MacPorts:

from shapely.geometry import Point
Failed CDLL(/Library/Frameworks/GEOS.framework/Versions/Current/GEOS)
Traceback (most recent call last):
File "", line 1, in
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/shapely/geometry/init.py", line 4, in
from .base import CAP_STYLE, JOIN_STYLE
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/shapely/geometry/base.py", line 9, in
from shapely.coords import CoordinateSequence
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/shapely/coords.py", line 8, in
from shapely.geos import lgeos
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/shapely/geos.py", line 98, in
free = load_dll('c').free
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/shapely/geos.py", line 61, in load_dll
libname, fallbacks or []))
OSError: Could not find lib c or load any of its variants [].

I've also tried GEOS from homebrew and kyngchaos' framework (http://www.kyngchaos.com/software/frameworks), but the result is always the same.

Could you, please, advise? Thanks!!

[sgillies]

OSError: Could not find lib c or load any of its variants [].

I'm so sorry, but I don't know how to help if ctypes can not find libc on your system.

[mromanie]

Many thanks for the answer! It turns out that I needed to unset the environment variable DYLD_FALLBACK_LIBRARY_PATH, after which everything works just fine (the package is brilliant, by the way!). Maybe my experience can be of use to others, as well.

From: Sean Gillies [email protected]
Reply-To: Toblerity/Shapely [email protected]
Date: Tuesday 26 July 2016 07:04
To: Toblerity/Shapely [email protected]
Cc: Martino Romaniello [email protected], Author [email protected]
Subject: Re: [Toblerity/Shapely] OSX (10.10.5) fails to load GEOX framework (#394)

OSError: Could not find lib c or load any of its variants [].

I'm so sorry, but I don't know how to help if ctypes can not find libc on your system.

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[douglowe]

Your experience is definitely useful to others. I had the same problem (on OSX too), and the recommended solution of unsetting DYLD_FALLBACK_LIBRARY_PATH has worked for me too - thanks!