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Asked: 2026-05-12T10:54:24+00:00

I’ve compiled a Python module using my own Qt4 library located in ~/opt/qt-4.6.0/ ,

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I’ve compiled a Python module using my own Qt4 library located in ~/opt/qt-4.6.0/,
but when I try to import that module, the dynamic libraries that get loaded are from my MacPorts Qt4 installation. 

$ /opt/local/bin/python2.6
>>> import vtk
objc[58041]: Class QMacSoundDelegate is implemented in both /Users/luis/opt/qt-4.6.0/lib/QtGui.framework/Versions/4/QtGui and /opt/local/libexec/qt4-mac/lib/QtGui.framework/Versions/4/QtGui. Using implementation from /opt/local/libexec/qt4-mac/lib/QtGui.framework/Versions/4/QtGui.
objc[58045]: Class QCocoaColorPanelDelegate is implemented in both /Users/luis/opt/qt-4.6.0/lib/QtGui.framework/Versions/4/QtGui and /opt/local/libexec/qt4-mac/lib/QtGui.framework/Versions/4/QtGui. Using implementation from /opt/local/libexec/qt4-mac/lib/QtGui.framework/Versions/4/QtGui.
[... more output like above ...]
>>>

Is there a way of telling Python (also installed from MacPorts) to load the frameworks located in my ~/opt/qt-4.6.0/lib/ directory? I’m not sure what environment variables to change.

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1 Answer

  1. Editorial Team

    Try setting the DYLD_LIBRARY_PATH to put your libraries in ~/opt/qt/... before the MacPorts’ libraries before invoking python (take a look at ~/.profile for an example of how to do this if you don’t know; MacPorts does the exact same thing to put its libraries on the DYLD_LIBRARY_PATH). dyld, the OS X dynamic linker uses DYLD_LIBRARY_PATH to find libraries at load time (among other methods); See man dyld for more info.

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