线上一台服务器安装lnmp环境，安装libmcrypt成功，安装mcrypt的时候发生错误：
cd /usr/local/src/ tar -zxvf libmcrypt-2.5.7.tar.gz cd libmcrypt-2.5.7 ./configure make && make install cd /usr/local/src/ tar -zxvf mcrypt-2.6.8.tar.gz cd mcrypt-2.6.8 ./configure
错误详情：
checking for libmcrypt – version >= 2.5.0… *** ‘libmcrypt-config –version’ returned 2.4.0, but LIBMCRYPT (2.5.8) *** was found! If libmcrypt-config was correct, then it is best *** to remove the old version of LIBMCRYPT. You may also be able to fix the error *** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing *** /etc/ld.so.conf. Make sure you have run ldconfig if that is *** required on your system. *** If libmcrypt-config was wrong, set the environment variable LIBMCRYPT_CONFIG *** to point to the correct copy of libmcrypt-config, and remove the file config.cache *** before re-running configure configure: error: *** libmcrypt was not found
参考百度以下各种办法，发现都无法解决：
http://www.linuxidc.com/Linux/2010-08/27598.htm
http://www.zihou.me/html/2014/05/08/9404.html
参考该文解决问题：
http://blog.csdn.net/alexdream/article/details/7408577
tar -zxvf libmcrypt-2.5.7.tar.gz cd libmcrypt-2.5.7 ./configure --prefix=/usr/local/libmcrypt make make install wget tar -zxvf mhash-0.9.9.9.tar.gz cd mhash-0.9.9.9 ./configure make make install cd /usr/local/src/mcrypt-2.6.8 LD_LIBRARY_PATH=/usr/local/libmcrypt/lib:/usr/local/lib ./configure --with-libmcrypt-prefix=/usr/local/libmcrypt make make install
无报错，解决问题！
本文出自 “海底两万里” 博客，请务必保留此出处http://huwei555.blog.51cto.com/1347480/1783598
解决libmcrypt was not found,无法安装mcrypt
原文地址：http://huwei555.blog.51cto.com/1347480/1783598
