求助：FC7安装fcitx无法解决依赖性错误！！

jujiangjun

安装时提示安装libexpat，于是找了个rpm装下，但提示如下信息：
[root@localhost Desktop]# yum install libexpat*
Loading "fastestmirror" plugin
Loading "installonlyn" plugin
Loading mirror speeds from cached hostfile
Setting up Install Process
Parsing package install arguments
Examining libexpat-2.0.1-alt0.1.i586.rpm: libexpat - 2.0.1-alt0.1.i586
Marking libexpat-2.0.1-alt0.1.i586.rpm to be installed
livna                     100% |=========================| 1.1 kB    00:00     
fedora                    100% |=========================| 2.1 kB    00:00     
updates                   100% |=========================| 1.9 kB    00:00     
freshrpms                 100% |=========================| 2.1 kB    00:00     
Resolving Dependencies
--> Running transaction check
---> Package libexpat.i586 0:2.0.1-alt0.1 set to be updated
--> Processing Dependency: /sbin/postun_ldconfig for package: libexpat
--> Finished Dependency Resolution
Error: Missing Dependency: /sbin/postun_ldconfig is needed by package libexpat

请问postun_ldconfig是个文件还是？是什么格式的？我试着新建了一个但不管用，那位能把你们的文件贴出来，谢谢！！！！