qt 4.4 phonon 为何不能用？

[weixin_38065391]

听说QT　4可以支持播放多媒体文件了，下了个试试，结果如下：Phonon support cannot be enabled due to functionality tests! Turn on verbose messaging (-v) to ./configure to see the final report. If you believe this message is in error you may use the continue switch (-continue) to ./configure to continue.是不是开源版的还不能使用这个功能，还是怎么回事？望高手指点。