[PyQt] pyqt loading libQtGui.dylib twice on Mac OS X

[Jeremy Sanders]

Martin Zibricky wrote:

> Hi,
> 
> I'm working on PyInstaller (www.pyinstaller.org) and recently for Mac
> platform we switched from using LD_LIBRARY_PATH to use
> @executable_path.
> 
> However, the side effect is that frozen PyQt app won't run if macports
> is installed.
> 
> If I don't use code   'from PyQt4 import Qt'  everything seems ok.
> 
> But when I freeze a PyQt app with that line I get the wollowing error:
> 
> objc[16341]: Class QCocoaColorPanelDelegate is implemented in
> both /private/tmp/test_pyqt4.app/Contents/MacOS/libQtGui.4.dylib
> and /opt/local/lib/libQtGui.4.dylib. One of the two will be used. Which
> one is undefined.
> 
> Full output:
> http://pastebin.com/16AEkHx1
> 
> Is there anything I could do to fix it so apps created with pyinstaller
> would work?

I've had similar problems with pyinstaller, where Qt plugins don't use the 
right Qt library. The otool program is great for fixing which libraries a 
dylib or executable is using. I've attached a script I use for fixing which 
libaries the Qt plugins use, which may fix your problem (change path at 
top).

Jeremy

-- 
http://www.jeremysanders.net/
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