我下载下mplayer的补丁，公社下的，出错，

muggle

checking for mozilla-plugin... Package mozilla-plugin was not found in the pkg-config search path.
Perhaps you should add the directory containing `mozilla-plugin.pc'
to the PKG_CONFIG_PATH environment variable
No package 'mozilla-plugin' found

configure: error: Library requirements (mozilla-plugin) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.
[root@localhost mplayerplug-in]#

我应该怎么做啊，我的mplayer是1.0pro,(也是从公社下的)
mplayerplug-in-2.0.tar.gz这个补丁