libtool: Version mismatch error. 解决方法

freeswitch 的时候，在 ./configure 和 make  之后可能会出现如下错误:

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1. libtool: Version mismatch error. This is libtool 2.4.2 Debian-2.4.2-1.1, but the
   
2. libtool: definition of this LT_INIT comes from libtool 2.2.6b.
   
3. libtool: You should recreate aclocal.m4 with macros from libtool 2.4.2 Debian-2.4.2-1.1
   
4. libtool: and run autoconf again.

解决方法很简单：

运行 autoreconf -ivf 即可。