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yum install error: protected multilib versions error
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sudo yum downgrade openssl 降级
sudo yum install openssl-devel
===另外参考============================================
yum install -y ncurses-devel
yum install openssl openssl-devel
yum install openssl openssl-devel --setopt=protected_multilib=false
ln -s /usr/lib64/libssl.so /usr/lib/
php安装编译时 configure: error: Cannot find OpenSSL's <evp.h>
原文：http://www.cnblogs.com/jking10/p/5106826.html