将luarocks整合进openresty

缘由

随着功能需求的深入, openresty领域的包已经不够用了, 需要lua领域本身累积的库, 也就是luarocks.
本文讲解了windows 10桌面和ubuntu server两套系统的方法

Ubuntu Server

比较简单, 无脑敲命令即可

$ wget https://luarocks.org/releases/luarocks-2.4.1.tar.gz
$ tar zxpf luarocks-2.4.1.tar.gz
$ cd luarocks-2.4.1
./configure --prefix=/usr/local/openresty/luajit 
    --with-lua=/usr/local/openresty/luajit/ 
    --lua-suffix=jit 
    --with-lua-include=/usr/local/openresty/luajit/include/luajit-2.1
make build && make install

安装luasql-postgres

apt-get install libpq-dev
luarocks PGSQL_INCDIR=/usr/include/postgresql/ install luasql-postgres

mysql同理. 安装之后
luarocks install luasql-mysql MYSQL_INCDIR=/usr/include/mysql

禁用ssh密码方式登录

vim /etc/ssh/sshd_config
PasswordAuthentication no

Windows 10

这个就比较复杂了.

安装MinGW

其实这个是可选项, 如果你的系统路径能找到MSVC的编译器, 那么这一步可以忽略.
为了让以后windwos进行linux相关的作业简单点, 长痛不如短痛, 干脆就装了MinGW吧.

1. 点击此处下载:https://sourceforge.net/projects/mingw/files/latest/download?source=files
2. 双击mingw-get-setup.exe, 记得勾选图形界面(默认是勾选的), 这样会让你选择具体安装哪些东西时比较方便
3. 在MinGW Installer图形界面勾选mingw32-base, 然后开始在线安装.

国内网速不是很好,断断续续的, 可能要等半天. 但最终我还是安装上了.
按默认路径安装你会发现C:MinGWinmingw32-gcc.exe这个玩意出现, 它就是luarocks要的东西.最后把C:MinGWin加入windows环境变量

下载luarocks

以2.4.2为例, windows版的下载链接:http://luarocks.github.io/luarocks/releases/luarocks-2.4.2-win32.zip
下载完解压,这里注意下, 以管理员权限打开cmd窗口再cd进luarocks-2.4.2-win32文件夹

配置并安装luarocks

这里, 假设windows上openresty文件夹的路径为:%USERPROFILE%Desktopopenresty

开始安装

在cmd依次敲下面两个命令

set PREFIX=%USERPROFILE%Desktopopenresty
install /P %PREFIX%luarocks /SELFCONTAINED /INC %PREFIX%includeluajit-2.1 /LIB %PREFIX% /BIN %PREFIX% /MW

/P 表示把luarocks安装在openresty的luarocks文件夹
/SELFCONTAINED 表示/TREE和/CONFIG选项的值和/P一致. 这样就所有玩意都在luarocks这个文件里,方便查找.
/INC 表示luajit的include库所在的文件夹
/LIB 表示lua51.dll所在的文件夹
/BIN表示luajit.exe所在的文件夹
/MW表示用mingw32-gcc.exe编译器.

完成安装

正常情况下. 在命令行看到如下输出:

C:UsersxnDesktopluarocks-2.4.2-win32>install /P %PREFIX%luarocks /SELFCONTAINED /INC %PREFIX%includeluajit-2.1 /LIB %PREFIX% /BIN %PREFIX% /MW

C:UsersxnDesktopluarocks-2.4.2-win32>rem=rem --[[
LuaRocks 2.4.x installer.


========================
== Checking system... ==
========================


Admin privileges available for installing
Looking for Lua interpreter
       Found luajit.exe, testing it...
    checking for C:UsersxnDesktopopenrestylua5.1.lib
    checking for C:UsersxnDesktopopenrestylua51.lib
    checking for C:UsersxnDesktopopenrestylua5.1.dll
    checking for C:UsersxnDesktopopenrestylua51.dll
       Found lua51.dll
    checking for C:UsersxnDesktopopenrestyincludeluajit-2.1lua.h
       Found lua.h
    C:UsersxnDesktopopenrestyluajit.exe uses MSVCRT.DLL as runtime
Runtime check completed.

==========================
== System check results ==
==========================

Will configure LuaRocks with the following paths:
LuaRocks        : C:UsersxnDesktopopenrestyluarocks
Config file     : C:UsersxnDesktopopenrestyluarocksconfig-5.1.lua
Rocktree        : C:UsersxnDesktopopenrestyluarockssystree

Lua interpreter : C:UsersxnDesktopopenrestyluajit.exe
    binaries    : C:UsersxnDesktopopenresty
    libraries   : C:UsersxnDesktopopenresty
    includes    : C:UsersxnDesktopopenrestyincludeluajit-2.1
    architecture: x86
    binary link : lua51.dll with runtime MSVCRT.dll

Compiler        : MinGW (make sure it is in your path before using LuaRocks)

Press <ENTER> to start installing, or press <CTRL>+<C> to abort. Use install /? for installation options.


============================
== Installing LuaRocks... ==
============================


Installing LuaRocks in C:UsersxnDesktopopenrestyluarocks...
Created LuaRocks command: C:UsersxnDesktopopenrestyluarocksluarocks.bat
Created LuaRocks command: C:UsersxnDesktopopenrestyluarocksluarocks-admin.bat

Configuring LuaRocks...
Created LuaRocks site-config file: C:UsersxnDesktopopenrestyluarockslualuarockssite_config_5_1.lua
Created LuaRocks config file: C:UsersxnDesktopopenrestyluarocksconfig-5.1.lua

Creating rocktrees...
Created system rocktree    : "C:UsersxnDesktopopenrestyluarockssystree"
Local user rocktree exists : "C:UsersxnAppDataRoamingLuaRocks"

============================
== LuaRocks is installed! ==
============================


You may want to add the following elements to your paths;
Lua interpreter;
  PATH     :   C:UsersxnDesktopopenresty
  PATHEXT  :   .LUA
LuaRocks;
  PATH     :   C:UsersxnDesktopopenrestyluarocks
  LUA_PATH :   C:UsersxnDesktopopenrestyluarockslua?.lua;C:UsersxnDesktopopenrestyluarockslua?init.lua
Local user rocktree (Note: %APPDATA% is user dependent);
  PATH     :   %APPDATA%LuaRocksin
  LUA_PATH :   %APPDATA%LuaRockssharelua5.1?.lua;%APPDATA%LuaRockssharelua5.1?init.lua
  LUA_CPATH:   %APPDATA%LuaRocksliblua5.1?.dll
System rocktree
  PATH     :   C:UsersxnDesktopopenrestyluarockssystreein
  LUA_PATH :   C:UsersxnDesktopopenrestyluarockssystreesharelua5.1?.lua;C:UsersxnDesktopopenrestyluarockssystreesharelua5.1?init.lua
  LUA_CPATH:   C:UsersxnDesktopopenrestyluarockssystreeliblua5.1?.dll

Note that the %APPDATA% element in the paths above is user specific and it MUST be replaced by its actual value.
For the current user that value is: C:UsersxnAppDataRoaming.

提示得很贴心了.把%USERPROFILE%Desktopopenrestyluarocks加入系统路径, 再试试luarocks install luafilesystem
如果一切顺利,你会发现%USERPROFILE%Desktopopenrestyluarockssystreeliblua5.1下出现了lfs.dll, 这就说明安装成功了.

配置nginx路径

包是成功安装好了, 那么怎么让nginx能找到它呢, 在配置文件里这样搞:

http {
    lua_package_path "C:UsersxnDesktopopenrestyluarockssystreesharelua5.1?.lua;C:UsersxnDesktopopenrestyluarockssystreesharelua5.1?init.lua;;";  
    lua_package_cpath "C:UsersxnDesktopopenrestyluarockssystreeliblua5.1?.dll;;";
}

Hello world

最后lua里面require('lfs'), 大功告成

参考

https://github.com/luarocks/luarocks/wiki/Installation-instructions-for-Windows
http://www.tuicool.com/articles/fQZVJjQ
https://luarocks.org/
https://stackoverflow.com/questions/43189975/how-to-install-luasql-on-linux-ubuntu-16