编译安装nginx须要pcre包，未安装会有以下提示：nginx
./configure: error: the HTTP rewrite module requires the PCRE library. You can either disable the module by using --without-http_rewrite_module option, or install the PCRE library into the system, or build the PCRE library statically from the source with nginx by using --with-pcre=<path> option.
须要安装pcre的devel包，pcre-devel。使用yum安装便可：（如下命令还带有ssl、zlib等依赖的安装）ui
yum -y install zlib zlib-devel openssl openssl--devel pcre pcre-devel