服务器Centos因为安装一些包发现autoconf版本不够，需要升级。
[root@netpc.com.cn ]# rpm -qf /usr/bin/autoconf
autoconf-2.59-12
[root@netpc.com.cn ]# rpm -e –nodeps autoconf-2.59-12
[root@netpc.com.cn ]# wget ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
[root@netpc.com.cn src]# tar zxvf ./autoconf-2.69.tar.gz
[root@netpc.com.cn src]# cd autoconf-2.69
[root@netpc.com.cn autoconf-2.69]# ./configure –prefix=/usr/
make&&make install
[root@netpc.com.cn autoconf-2.69]# /usr/bin/autoconf -V
autoconf (GNU Autoconf) 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by David J. MacKenzie and Akim Demaille.
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