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Is it possible to manually replace or specify the location of a .dylib on Mac OSX when using pyinstaller?

I'm getting the error when trying to open my completed .app

Traceback (most recent call last):
  File "DeepMeerkat/main.py", line 3, in <module>
    import cv2
  File "/Library/Python/2.7/site-packages/PyInstaller/loader/pyimod03_importers.py", line 546, in load_module
    module = imp.load_module(fullname, fp, filename, ext_tuple)
ImportError: dlopen(/Users/ben/Documents/DeepMeerkat/Installer/dist/Lib/cv2.so, 2): Library not loaded: @loader_path/libpng16.16.dylib
  Referenced from: /Users/ben/Documents/DeepMeerkat/Installer/dist/Lib/libopencv_imgcodecs.3.3.dylib
  Reason: Incompatible library version: libopencv_imgcodecs.3.3.dylib requires version 48.0.0 or later, but libpng16.16.dylib provides version 45.0.0
Failed to execute script main

I have no problem loading cv2 in python outside of the app, or any other problems with open, which was installed with homebrew.

Poking around, I think it is extremely likely the error comes from pyinstaller grabbing libpng from X11 (/opt/X11/include/libpng16) when it needs to be grabbing from Homebrew's folders (/usr/local/Cellar/libpng/1.6.32/)

How can I use a hook to specify which libpng I want?

bfontaine
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bw4sz
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1 Answers1

4

I had the same problem, the answer lay in editing the .spec file. Add the following line after a = Analysis...:

a.binaries = a.binaries - TOC([('libpng16.16.dylib',None,None)])

This has the effect of removing the offending dylib from the relevant TOC file which solves the conflict.

Multispectral
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