Nginx如何添加lua模块

wget http://luajit.org/download/luajit-2.0.5.tar.gz 
tar -zxvf luajit-2.0.5.tar.gz
cd luajit-2.0.5
make && make install prefix=/usr/local/luajit

# lua
export luajit_lib=/usr/local/luajit/lib 
export luajit_inc=/usr/local/luajit/include/luajit-2.0

wget https://github.com/simpl/ngx_devel_kit/archive/v0.3.0.tar.gz

wget https://github.com/openresty/lua-nginx-module/archive/v0.10.9rc7.tar.gz

nginx -v

./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-http_sub_module --with-http_v2_module --add-module=/root/lua-nginx-module-0.10.9rc7/ --add-module=/root/ngx_devel_kit-0.3.0

nginx -v 命令报错
./nginx: error while loading shared libraries: libluajit-5.1.so.2: cannot open shared object file: no such file or directory

解决：
echo "/usr/local/luajit/lib" >> /etc/ld.so.conf

ldconfig

make upgrade

server{
 ...
 location /lua {
  default_type 'text/html';
  content_by_lua '
    ngx.say("hello, lua!")
  ';
 }
 ...
}