export LUAJIT_LIB=/usr/local/lib
export LUAJIT_INC=/usr/local/include/luajit-2.0/
./configure --prefix=/usr/local/tengine-2.1.0 --dso-path=/usr/local/tengine-2.1.0/modules --with-http_realip_module --with-http_gzip_static_module --with-http_stub_status_module --with-http_concat_module --with-http_lua_module  --http-proxy-temp-path=/var/tmp/tengine-2.1.0/proxy_temp --http-fastcgi-temp-path=/var/tmp/tengine-2.1.0/fastcgi_temp --http-uwsgi-temp-path=/var/tmp/tengine-2.1.0/uwsgi_temp --http-scgi-temp-path=/var/tmp/tengine-2.1.0/cgi_temp --http-client-body-temp-path=/var/tmp/tengine-2.1.0/client_body_temp --http-log-path=/var/log/tengine-2.1.0/access.log --error-log-path=/var/log/tengine-2.1.0/error.log --with-ld-opt="-Wl,-rpath,$LUAJIT_LIB"



ln -s /usr/local/lib/libluajit-5.1.so.2 /lib64/libluajit-5.1.so.2

742  yum install freetype
  743  yum install freetype-devel
  744  ./configure --prefix=/usr/local/GraphicsMagick-1.3.20 --enable-shared
  745  make
  746  make install

location ~* ^(.+\.(jpg|jpeg|gif|png))_(\d+)_(\d+)\.(jpg|jpeg|gif|png)$ {

                root /data1/wwwroot/img.yuanfenba.net/;
                if (!-f $request_filename) {

                        #content_type ‘text/plain‘;
                        #content_by_lua ‘ngx.say("hello, lua")‘;
                        #add_header X-Powered-By ‘Lua GraphicsMagick‘;    # 此 HTTP Header 无实际意义，用于测试
                        #add_header file-path $request_filename;    # 此 HTTP Header 无实际意义，用于测试
                        #lua_code_cache off; # 在编写外部 Lua 脚本时，设置为 off Nginx 不会缓存 Lua，方便调试
                        set $request_filepath $document_root$1;
                        set $big_pic_url $1;
                        set $width $3;
                        set $height $4;
                        set $ext $5;
                        content_by_lua_file /document_root/ImageResizer.lua;
                }
        }

ImageResizer.lua

#!/usr/bin/env lua

function file_exists(name)
        local f=io.open(name,"r");
        if f~=nil then io.close(f) return true else return false end;
end


if not file_exists("/www/img.yuanfenba.net".. ngx.var.big_pic_url) then
command = string.format("wget -m -P /www/ http://img.yuanfenba.net/"..ngx.var.big_pic_url);
os.execute(command);
--      ngx.say(command)
end

if ngx.var.width == "540" then chuli = "crop" else chuli = "resize" end

local command = "/usr/local/GraphicsMagick-1.3.20/bin/gm convert " .. ngx.var.request_filepath .. " -" ..chuli.." " .. ngx.var.width .. "x" .. ngx.var.height .. "! +profile \"*\" " .. ngx.var.request_filepath .. "_" .. ngx.var.width .. "_" .. ngx.var.height .. "." .. ngx.var.ext;
--ngx.say(command);
os.execute(command);
return ngx.redirect(ngx.var.request_uri, ngx.HTTP_MOVED_TEMPORARILY)

tengine-2.1.0 + GraphicsMagick-1.3.20