https://github.com/libevent/libevent.git
https://github.com/libevent/libevent/blob/master/Documentation/Building.md#building-on-unix-cmake
从github上下载libevent的源码
./autogen.sh ./configure make
在make过程中，需要openssl相关的东西，这个无法通过源安装，只能下载源码编译
openssl安装完成后，再 make ，然后 make install 就可以了