编译某个软件的时候提示openssl版本过低，yum不给力，只要编译安装了。
系统：CentOS release 6.7 (Final)
自带openssl版本是：
OpenSSL 1.0.1e-fips 11 Feb 2013
openssl官网是：https://www.openssl.org
随便一个就行
wget https://www.openssl.org/source/openssl-1.0.2h.tar.gz tar xf openssl-1.0.2h.tar.gz mv openssl-1.0.2h /usr/local/openssl cd /usr/local/openssl ./config shared zlib make depned make make install
以前的openssl还在，先备份再替换
mv /usr/local/ssl/bin/openssl{,.back}
mv /usr/local/ssl/include/openssl{,.back}
mv /usr/bin/openssl{,.back}
mv /usr/lib64/openssl/engines{,.back} //32bit是lib
ln -s /usr/local/openssl/apps/openssl /usr/local/ssl/bin/openssl
ln -s /usr/local/openssl/include/openssl /usr/local/ssl/include/openssl
ln -s /usr/local/openssl/engines /usr/lib64/openssl/engines
ln -s /usr/local/openssl/apps/openssl /usr/bin/openssl
ldconfig