下载及安装httpd
下载地址：http://httpd.apache.org/download.cgi 解压：tar -jxvf httpd-2.4.51.tar.bz2
cd httpd-2.4.51/ 安装：./configure --prefix=/usr/local/apache2
若编译报错 error: APR not found，则需要安装下面的依赖库
下载相应的库： wget http://archive.apache.org/dist/apr/apr-1.4.5.tar.gz wget http://archive.apache.org/dist/apr/apr-util-1.3.12.tar.gz wget http://jaist.dl.sourceforge.net/project/pcre/pcre/8.10/pcre-8.10.zip
安装APR，解决APR not found的问题
tar -zxf apr-1.4.5.tar.gz cd apr-1.4.5 ./configure --prefix=/usr/local/apr make && make install
安装apr util，解决APR-util not found问题
tar -zxf apr-util-1.3.12.tar.gz cd apr-util-1.3.12 ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr/ make && make install
安装pcre，解决pcre问题
unzip -o pcre-8.10.zip cd pcre-8.10 ./configure --prefix=/usr/local/pcre make && make install
进入httpd解压后的文件夹，安装httpd
./configure --prefix=/usr/local/httpd --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util --with-pcre=/usr/local/pcre --enable-ssl --with-ssl=/usr/local/openssl
make && make install
安装后的文件夹位置是：/usr/local/httpd