PyQt4 on Snow Leopard in 64 bit

Question

I just compiled the latest preview of Qt4.6 on Snow Leopard in 64 bit without any major issues.

http://qt.nokia.com/developer/qt-4.6-technology-preview#download-the-qt-4-1

Now, I am trying to do the same for PyQt4.6 with the latest snapshot from the River Bank website. However, the compiler exits with the following issue:

g++ -c -pipe -fPIC -arch x86_64 -O2 -Wall -W -DNDEBUG -DQT_NO_DEBUG -DQT_CORE_LIB -I. -I/Users/drufat/Downloads/PyQt-mac-gpl-4.6-snapshot-20090914/qpy/QtCore -I/System/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -I/usr/local/Trolltech/Qt-4.6.0/mkspecs/default -I/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers -I/usr/local/Trolltech/Qt-4.6.0/include -F/Users/drufat/Downloads/PyQt-mac-gpl-4.6-snapshot-20090914/qpy/QtCore -F/usr/local/Trolltech/Qt-4.6.0/lib -o sipQtCoreQResource.o sipQtCoreQResource.cpp
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h: In copy constructor ‘QResource::QResource(const QResource&)’:
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:180: error: ‘QScopedPointer<T, Cleanup>::QScopedPointer(const QScopedPointer<T, Cleanup>&) [with T = QResourcePrivate, Cleanup = QScopedPointerDeleter<QResourcePrivate>]’ is private
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qresource.h:59: error: within this context
sipQtCoreQResource.cpp: In constructor ‘sipQResource::sipQResource(const QResource&)’:
sipQtCoreQResource.cpp:78: note: synthesized method ‘QResource::QResource(const QResource&)’ first required here 
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h: In static member function ‘static void QScopedPointerDeleter<T>::cleanup(T*) [with T = QResourcePrivate]’:
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:100:   instantiated from ‘QScopedPointer<T, Cleanup>::~QScopedPointer() [with T = QResourcePrivate, Cleanup = QScopedPointerDeleter<QResourcePrivate>]’
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qresource.h:59:   instantiated from here
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:59: error: invalid application of ‘sizeof’ to incomplete type ‘QResourcePrivate’ 
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:59: error: creating array with negative size (‘-0x00000000000000001’)
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:60: error: invalid application of ‘sizeof’ to incomplete type ‘QResourcePrivate’ 
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:60: error: creating array with negative size (‘-0x00000000000000001’)
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:62: warning: possible problem detected in invocation of delete operator:
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:54: warning: ‘pointer’ has incomplete type
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qresource.h:56: warning: forward declaration of ‘struct QResourcePrivate’
/usr/local/Trolltech/Qt-4.6.0/lib/QtCore.framework/Headers/qscopedpointer.h:62: note: neither the destructor nor the class-specific operator delete will be called, even if they are declared when the class is defined.

Is this an error with PyQt4 trying to access a private member of a Qt4 class? Has anybody compiled PyQt4 on Snow Leopard successfully?

Answer 1

In the changelogs I see Phil (PyQt's maintainer) has issued fixes yesterday in the development snapshots specifically for Snow Leopard:

2009/09/14 12:12:49 phil Further fixes for Snow Leopard on 64 bit systems. Added QObject.pyqtConfigure().

Are you using yesterday's build of PyQt?

This thread on the mailinglist is also particulary interesting.

The PyQt compile troubles seems to be caused by Snow Leopards default 64bit compiles and the 64/32 bit mixed version of Python it ships with.

If things continue to go wrong, i would submit your problems to this mailinglist (so they can get fixed - hopefully) and try to (temporarily) rebuild Qt and PyQt (and possibly python) in a 32-bit fashion (with the -m32 compiler flag) if you need it working now.

Answer 2

I just got PyQt 4.6.2 working with the 64bit Python 2.6.1. I posted the instructions here: http://mpastell.com/2009/11/24/pyqt-4-6-2-with-snow-leopard/

Answer 3

You might want to use PyQt from the homebrew project: straightforward build, managed dependencies.

Run fine on my MBP Unibody, all 64-bit.