autogen.sh失败，则输出表明我需要更高版本的一个autoconf。 但其实我有一个2.6倍的autoconf ....
为什么它还是没有？
[mirror@home 4]$ ./autogen.sh
+ autoreconf -i -f -v
autoreconf: Entering directory `.'
autoreconf: configure.in: not using Gettext
autoreconf: running: aclocal --force -I m4
configure.in:4: error: Autoconf version 2.60 or higher is required
configure.in:4: the top level
autom4te: /usr/bin/m4 failed with exit status: 63
aclocal: autom4te failed with exit status: 63
autoreconf: aclocal failed with exit status: 63
在配置//内容：4
这是AC_PREREQ（2.60）
[mirror@home 4]$ autoconf
autoconf autoconf2.59 autoconf2.6x
[mirror@home 4]$ autoconf
[mirror@home 4]$ ls -l autocon
[mirror@home 4]$ ls /usr/bin/autoconf* -l
lrwxrwxrwx 1 root root 12 Aug 27 13:55 /usr/bin/autoconf -> autoconf2.6x
-rwxr-xr-x 1 root root 7663 Jan 6 2007 /usr/bin/autoconf2.59
-rwxr-xr-x 1 root root 14635 Feb 3 2011 /usr/bin/autoconf2.6x
2.63> 2.60，但未能AUTOGEN，它真的很困惑:(
[mirror@home 4]$ autoconf --version
autoconf (GNU Autoconf) 2.63
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv2+: GNU GPL version 2 or later
<http://gnu.org/licenses/old-licenses/gpl-2.0.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.
更多细节：
autoreconf --version
autoreconf (GNU Autoconf) 2.59
我想知道究竟是为什么autogen.sh失败？
