centos 7下编译安装Apache httpd 2.4

centos 7.4 最小化安装版本，采用阿里云的源，安装前yum update更新过

---

1. 最新版Apache HTTP Server下载地址
   http://httpd.apache.org/download.cgi

   Apache官网的安装说明
   http://httpd.apache.org/docs/2.4/install.html#install

   除了Apache httpd，还要下载两个依赖环境,
   下载地址：http://apr.apache.org/download.cgi

2. 把下载好的两个APR 和 APR-Util解压后，分别重命名去掉版本编号，就单单apr文件夹和apr-util文件夹就好了，然后把这两个文件夹移动到httpd根目录下的srclib文件夹里面，

3. 配置apache./configure

   遇到错误提示：configure: error: pcre-config for libpcre not found. PCRE is required and available from http://pcre.org/
   解决办法：
   sudo yum -y install pcre-devel

4. sudo make 时间有点长的噢，听会歌吧。

   遇到错误提示：fatal error: expat.h: No such file or directory
   解决办法：yum install expat-devel

   遇到错误提示如下，说明缺少了xml相关的库

   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_GetErrorCode'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_SetEntityDeclHandler'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_ParserCreate'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_SetCharacterDataHandler'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_ParserFree'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_SetUserData'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_StopParser'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_Parse'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_ErrorString'
   /root/httpd-2.4.29/srclib/apr-util/.libs/libaprutil-1.so: undefined reference to `XML_SetElementHandler'
   collect2: error: ld returned 1 exit status
   make[2]: *** [htpasswd] Error 1
   make[2]: Leaving directory `/root/httpd-2.4.29/support'
   make[1]: *** [all-recursive] Error 1
   make[1]: Leaving directory `/root/httpd-2.4.29/support'
   make: *** [all-recursive] Error 1

   解决办法：yum install -y libxml2-devel

5. sudo make test 编译测试，有11316个条目要检查噢，先喝杯咖啡。

6. sudo make install编译安装