Phonon-related link errors on OS X Mavericks

Link errors occur when attempting to build Qt under OS X 10.9.2.
Qt configured with:

./configure -release -arch "x86 x86_64"

Qt source is latest from git.

The error is this:

g++ -headerpad_max_install_names -arch x86_64 -arch i386 -Xarch_x86_64 -mmacosx-version-min=10.5 -Xarch_x86_64 -mmacosx-version-min\
=10.5 -Xarch_i386 -mmacosx-version-min=10.4 -o capabilities.app/Contents/MacOS/capabilities .obj/release-shared/window.o .obj/relea\
se-shared/main.o .obj/release-shared/moc_window.o -F/tmp/qt/lib -L/tmp/qt/lib -framework phonon -L/tmp/qt/lib -F/tmp/qt/lib -fram\
ework QtGui -framework QtCore
Undefined symbols for architecture x86_64:
"Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0>::qt_metacast(char const*)", referenced from:
vtable for Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0> in window.o
"Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0>::metaObject() const", referenced from:
vtable for Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0> in window.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [capabilities.app/Contents/MacOS/capabilities] Error 1
make[2]: *** [sub-capabilities-make_default-ordered] Error 2
make[1]: *** [sub-phonon-make_default] Error 2
make: *** [sub-examples-make_default-ordered] Error 2

This appears to be due to changes in symbol export semantics. These are defined in src/3rdparty/phonon/phonon/objectdescriptionmodel.h:

/* Required to ensure template class vtables are exported on both symbian
and existing builds. */
#if (defined(Q_OS_SYMBIAN) && defined(Q_CC_RVCT)) || defined(Q_CC_CLANG)
// RVCT compiler (2.2.686) requires the export declaration to be on the class to export vtables
// MWC compiler works both ways
// GCCE compiler is unknown (it can't compile QtCore yet)
// Clang also requires the export declaration to be on the class to export vtables
#define PHONON_TEMPLATE_CLASS_EXPORT PHONON_EXPORT
#define PHONON_TEMPLATE_CLASS_MEMBER_EXPORT
#else
// Windows builds (at least) do not support export declaration on templated class
// But if you export a member function, the vtable is implicitly exported
#define PHONON_TEMPLATE_CLASS_EXPORT
#define PHONON_TEMPLATE_CLASS_MEMBER_EXPORT PHONON_EXPORT
#endif

This flaw can be fixed by changing the above code to this:

/* Required to ensure template class vtables are exported on both symbian
and existing builds. */
#if defined(Q_OS_SYMBIAN) && defined(Q_CC_RVCT)
// RVCT compiler (2.2.686) requires the export declaration to be on the class to export vtables
// MWC compiler works both ways
// GCCE compiler is unknown (it can't compile QtCore yet)
// Clang also requires the export declaration to be on the class to export vtables
#define PHONON_TEMPLATE_CLASS_EXPORT PHONON_EXPORT
#define PHONON_TEMPLATE_CLASS_MEMBER_EXPORT
#elif defined(Q_CC_CLANG)
#define PHONON_TEMPLATE_CLASS_EXPORT
#define PHONON_TEMPLATE_CLASS_MEMBER_EXPORT PHONON_EXPORT
#else
// Windows builds (at least) do not support export declaration on templated class
// But if you export a member function, the vtable is implicitly exported
#define PHONON_TEMPLATE_CLASS_EXPORT
#define PHONON_TEMPLATE_CLASS_MEMBER_EXPORT PHONON_EXPORT
#endif