在调用openssl库时，遇到路径包含问题，于是记录解决的问题如下：
gedit /etc/profile文件，添加如下代码：
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/usr/local/ssl/include
export C_INCLUDE_PATH=$C_INCLUDE_PATH:/usr/local/ssl/include
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/ssl/lib