我刚刚用过apt-get update，我的 apache 已经更新到2.4.6.
我想安装 apxs 来编译模块，但出现此错误
The following packages have unmet dependencies:
apache2-prefork-dev : Depends: apache2.2-common (= 2.2.22-1ubuntu1.4) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.