Nginx compilation and installation

<code>我的系统是CentOS-7，Nginx的源码可以在官网下载，网址为：http://nginx.org/en/download.html，我下载了目前的最新版本nginx-1.9.3.tar.gz
   下载后，解压缩，然后还需要安装一些必要的软件才能够编译
</code>

(1) GCC Compiler
The gcc compiler is a prerequisite for compiling programs. Install using yum install -y gcc
(2) PCRE library
The PCRE library is a function library that supports positive expressions. If regular expressions are used in nginx.conf, this library must be compiled into Nginx during compilation, because Nginx’s HTTP module depends on it. Parse regular expressions. Use the command below to download
yum install -y pcre pcre-devel
pcre-devel is a development library needed when using PCRRE for secondary development. Just like kernel-devel is installed when developing kernel source code, this development library contains header files, etc., and is necessary to compile Nginx. Some tutorials on the Internet only said to download pcre, but not pcre-devel. I tried it and the compilation failed, so I still need to download both
(3) zlib library
The zlib library is used to perform appropriate gzip compression on the content of HTTP packets. If we configure gzip on in nginx.conf and specify that certain types of HTTP responses should be compressed using gzip to reduce network transmission volume, we must The zlib library is compiled into Nginx and downloaded using the following command
yum install -y zlib zlib-devel
Like the PCRE library, the zlib library is a library for direct use, while zlib-devel is a library for secondary development
(4) OpenSSL development library
If our server does not want to support HTTP and needs to transmit HTTP over the more secure SSL protocol, then we need to install the OpenSSL development library and use the following command to install it.
yum install -y openssl openssl-devel
Since this is the first installation, I use the default configuration. You can complete the entire installation process directly by using the following command
./configure
make
make install
After the three instructions are executed, the final result is as shown in the picture below

Use some commands below to check whether Nginx is installed normally
Run: /usr/local/nginx/sbin/nginx
Query nginx main process number: ps -ef | grep nginx
Stop the process: kill -QUIT main process number
Quick stop: kill -TERM main process number
(If you don’t know whether Nginx has been installed before, you can use the command find -name nginx to check, and to uninstall, use the command yum remove nginx)

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The above has introduced the compilation and installation of Nginx, including aspects of it. I hope it will be helpful to friends who are interested in PHP tutorials.