安装依赖

        sudo apt-get install libapache2-mod-fastcgi
a2enmod fastcgi
sudo apt-get install libfcgi-dev libfcgi0ldbl

    

编写FCGI代码

代码fcgi-hello.c

        #include "fcgi_stdio.h" /* fcgi library; put it first*/
#include <stdlib.h>

int count;

void initialize(void)
{
  count=0;
}

void main(void)
{
/* Initialization. */  
  initialize();

/* Response loop. */
  while (FCGI_Accept() >= 0)   {
    char *host = getenv("SERVER_HOSTNAME");
    printf("Content-type: text/html\r\n"
           "\r\n"
           "<title>FastCGI Hello! (C, fcgi_stdio library)</title>"
           "<h1>FastCGI Hello! (C, fcgi_stdio library)</h1>"
           "Request number %d running on host <i>%s</i>\n",
            ++count, (host == NULL)?"unknow":host);
  }
}

    

编译

        gcc fcgi-hello.c -o fcgi-hello.fcgi -lfcgi

    

配置Apache

编辑/etc/apache2/mods-available/fastcig.conf， 在AddHandler处添加.fcgi

        <IfModule mod_fastcgi.c>
  AddHandler fastcgi-script .fcgi
  FastCgiIpcDir /var/lib/apache2/fastcgi
</IfModule>

    

编辑/etc/apache2/sites-available/fcgi-demo.conf

        <VirtualHost *:8081>
    ServerName localhost
    ServerAdmin you@local.com
    DocumentRoot /var/www
    ErrorLog /var/log/apache2/error.log
    CustomLog /var/log/apache2/access.log combined
    ServerSignature Off

    <IfModule mod_fastcgi.c>
        <Directory /var/www>
            Options +ExecCGI
            AllowOverride All
            SetHandler fastcgi-script
            Order allow,deny
            Allow from all
            AuthBasicAuthoritative Off
        </Directory>
    </IfModule>
</VirtualHost>

    

编辑/etc/apache2/ports.conf，添加8081端口的监听

        Listen 80
Listen 8081

    

启用fcgi-demo站点

        a2ensite fcgi-demo.conf

    

重载apache

        sudo service apache2 reload

    

确保防火墙的8081端口是打开的，然后就可以通过浏览器或curl访问这个fastcgi程序了。

原文：http://www.cnblogs.com/alexyang8/p/3542837.html