不知道，我刚接触linux，安装autoconf和automake时出现如下提示：
[root@localhost ~]# yum install automake
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
core                                                            1.1 kB 00:00
extras                                                          1.1 kB 00:00
updates                                                         1.2 kB 00:00
Reading repository metadata in from local files
Parsing package install arguments
Nothing to do
[root@localhost ~]# yum install autoconf
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Nothing to do

请问这是怎么回事？
【 在 fancyrabbit (兔兔猫★Initial F★电工实习) 的大作中提到: 】
: ... 请问你知道 Makefile.in 是如何产生的吗？
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