注：如果系统自带了apr和apr-util可以不用额外下载，如果需要升级的情况，可按如下操作

# 编译和安装 apr 1.2
cd srclib/apr
./configure --prefix=/usr/local/apr-httpd/
make
make install


# 编译和安装 apr-util 1.2
cd ../apr-util
./configure --prefix=/usr/local/apr-util-httpd/ --with-apr=/usr/local/apr-httpd/
make
make install

# 配置 httpd
cd ../../
./configure --with-apr=/usr/local/apr-httpd/ --with-apr-util=/usr/local/apr-util-httpd/