qt4-mac @4.7.4_1+quartz libpng error

[pcrackenberg@…]

I got a libpng error, as mentioned on the FAQ here: wiki:ProblemHotlist#libpng

This was the following error I got after installing py27-pyqt4 and the required dependencies:

Traceback (most recent call last):
  File "QtEvent.pyw", line 15, in <module>
    from PyQt4.QtGui import *
ImportError: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PyQt4/QtGui.so, 2): Library not loaded: /opt/local/lib/libpng12.0.dylib
  Referenced from: /opt/local/lib/libQtGui.4.dylib
  Reason: image not found

Forcing an upgrade (as stated in the FAQ) for py27-pyqt4, python27, and libpng didn't work, however forcing an upgrade for qt4-mac fixed the problem.

[ryandesign (Ryan Carsten Schmidt)]

I cannot explain why your qt4-mac was not already linked with libpng 1.4, since libpng was updated to 1.4 over a year ago in r75159 and qt4-mac received a revbump at the same time. So I do not know what action we could now take to improve the situation.

[pcrackenberg@…]

Replying to ryandesign@…:

I cannot explain why your qt4-mac was not already linked with libpng 1.4, since libpng was updated to 1.4 over a year ago in r75159 and qt4-mac received a revbump at the same time. So I do not know what action we could now take to improve the situation.

I did control+c qt4-mac the first time I installed it, since I thought it had froze from inactivity. Running it again on verbose mode, though, told me that it wasn't. No clue if that might muck up things or not. I'd never installed Macports before, so I can't imagine I had something old on my system.

Feel free to close out the ticket if there's nothing for you to do, the FAQ just said to file one, so I did. :)

[michaelld (Michael Dickens)]

There's a new qt4-mac and py27-pyqt4 out, which should fix this issue. I'm closing this ticket as fixed. Please open a new ticket with the relevant new info if the problem persists after doing

sudo port selfupdate
sudo port upgrade outdated