The multimedia modules fails to compile. On the same machines I can compile 1.2 HEAD just fine, so that shouldn't be the problem. The error is from Windows 7, but on WinXP it's basically the same. Everything compiled with mingw (32bit).

g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_SHARED -DQTM_PLUGIN_PATH=\"C:/QtMobility/plugins\" -DQT_MAKEDLL -DQT_BUILD_MULTIMEDIA_LIB -DQT_DLL -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -I"c:\Qt\2010.05\qt\include\QtCore" -I"c:\Qt\2010.05\qt\include\QtNetwork" -I"c:\Qt\2010.05\qt\include\QtGui" -I"c:\Qt\2010.05\qt\include\QtOpenGL" -I"c:\Qt\2010.05\qt\include" -I"..\global" -I"." -I"audio" -I"video" -I"effects" -I"c:\Qt\2010.05\qt\include\ActiveQt" -I"..\..\build\Debug\QtMultimediaKit\moc" -I"c:\Qt\2010.05\qt\mkspecs\win32-g++" -o ..\..\build\Debug\QtMultimediaKit\qaudiodeviceinfo_win32_p.o audio\qaudiodeviceinfo_win32_p.cpp
audio\qaudiodeviceinfo_win32_p.cpp: In static member function 'static QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode)':audio\qaudiodeviceinfo_win32_p.cpp:382: error: 'CLSID_AudioInputDeviceCategory' was not declared in this scope
audio\qaudiodeviceinfo_win32_p.cpp:388: error: 'IPropertyBag' was not declared in this scope
audio\qaudiodeviceinfo_win32_p.cpp:388: error: 'pPropBag' was not declared in this scope
audio\qaudiodeviceinfo_win32_p.cpp:407: error: 'StringCchCopyW' was not declared in this scope
mingw32-make[3]: *** [../../build/Debug/QtMultimediaKit/qaudiodeviceinfo_win32_p.o] Error 1
mingw32-make[3]: Leaving directory `C:/Users/tourschall/workspace/qt-mobility/src/multimedia'
mingw32-make[2]: *** [debug-all] Error 2
mingw32-make[2]: Leaving directory `C:/Users/tourschall/workspace/qt-mobility/src/multimedia'
mingw32-make[1]: *** [sub-multimedia-make_default] Error 2
mingw32-make[1]: Leaving directory `C:/Users/tourschall/workspace/qt-mobility/src'
mingw32-make: *** [sub-src-make_default-ordered] Error 2