php 编译安装报错 configure: error: mcrypt.h not found. Please reinstall libmcrypt.

编译安装php时报错的解决方法：

错误一：configure: error: mcrypt.h not found. Please reinstall libmcrypt.

    解决办法：需要安装Libmcrypt

        wget http://softlayer.dl.sourceforge.net/sourceforge/mcrypt/libmcrypt-2.5.8.tar.gz
        tar -zxvf libmcrypt-2.5.8.tar.gz
        cd /usr/local/src/libmcrypt-2.5.8
        ./configure --prefix=/usr/local
        make
        make install