wget http://nginx.org/download/nginx-1.2.0.tar.gz
解压后可以看到nginx-1.2.0目录：
tar zxvf nginx-1.2.0.tar.gz
安装PCRE库
yum -y install pcre-devel
安装openssl库
yum -y install openssl openssl-devel
生成make file文件：
./configure --prefix=/usr/nginx
结果要仔细看一下，有些很重要的信息：
creating objs/Makefile
Configuration summary
+ using system PCRE library
+ OpenSSL library is not used
+ md5: using system crypto library
+ sha1: using system crypto library
+ using system zlib library
nginx path prefix: "/usr/nginx"
nginx binary file: "/usr/nginx/sbin/nginx"
nginx configuration prefix: "/usr/nginx/conf"
nginx configuration file: "/usr/nginx/conf/nginx.conf"
nginx pid file: "/usr/nginx/logs/nginx.pid"
nginx error log file: "/usr/nginx/logs/error.log"
nginx http access log file: "/usr/nginx/logs/access.log"
nginx http client request body temporary files: "client_body_temp"
nginx http proxy temporary files: "proxy_temp"
nginx http fastcgi temporary files: "fastcgi_temp"
nginx http uwsgi temporary files: "uwsgi_temp"
nginx http scgi temporary files: "scgi_temp"
比如pid 文件，error log文件,access log文件等等。
现在编译和安装：
make
make install
进入/usr/nginx/sbin目录下，可以执行nginx程序启动。
如果要修改端口，修改/usr/nginx/conf/nginx.conf文件，比如：
server {
listen 8081;