How to configure an elegant Lua Development Environment

How to configure an elegant Lua Development Environment
Discussion topic

• What is an elegant development environment?
• How to deploy the Service (this article discusses the MacOSX platform, which is also applicable to other platforms)

Elegant Lua Development Environment

The elegant Lua development environment includes at least the following:

• Install the latest stable edition Lua
• Install the appropriate Lua Package Manager (Luarocks is recommended for installation)
• Source code installation (properly organize the installation directory and set environment variables to make the Lua environment easier to use and manage)

Version Selection

First, we should pay attention to the various popular Lua versions (5.1x, 5.2x, 5.3x). How can we choose the latest stable version that suits our needs.

My environment is used for Web Application Development Based on Openresty (Openresty is a derivative version of Nginx and its Http_lua Module). In Openresty, Lua code execution is through LuaJit parsing and acceleration, while LuaJit is developed based on Lua5.1x ABI, Openresty officially states that using LuaJit to run Lua code is the best solution, so there is no doubt that Lua5.1x is the most suitable for me, and the latest stable version is Lua5.1.5.

Installation and deployment

Compared with brew, apt-get, yum, and other installation methods, we recommend that you use the source code for installation. This helps us to have a better understanding and grasp of the details of the entire environment and organize the installation directory reasonably, it is easy to use and manage by setting environment variables.

Download and decompress the Lua source code:

wget http://www.lua.org/ftp/lua-5.1.5.tar.gztar zxvf lua-5.1.5.tar.gzcd lua-5.1.5

Open Makefile and you can see the following information:

PLAT = none # Installation Platform. The default platform is noneINSTALL_TOP =/usr/local # installation and directory. The default value is/usr/local # Convenience platforms targets. # Platform Supported by source code PLATS = aix ansi bsd freebsd generic linux macosx mingw posix solaris

Change INSTALL_TOP to your specified installation directory and save it.

INSTALL_TOP= /usr/local/lua-5.1.5

Follow these steps:

Make macosx # The compilation platform is set to macosx, and other platforms can directly replace macosx, such as make linuxmake macosx install # The Installation Platform is set to macosx

After successful installation:

 ~/Desktop/ ll /usr/local/lua-5.1.5total 0drwxr-xr-x  4 root  wheel   136B 10 19 18:48 bindrwxr-xr-x  7 root  wheel   238B 10 19 18:48 includedrwxr-xr-x  4 root  wheel   136B 10 19 18:48 libdrwxr-xr-x  3 root  wheel   102B 10 19 18:48 mandrwxr-xr-x  3 root  wheel   102B 10 19 18:48 share

Runlua -vView the installed Lua version

 ~/Desktop/ lua -vzsh: command not found: lua ~/Desktop/ ln -sf /usr/local/lua-5.1.5/bin/lua /usr/local/bin/lua ~/Desktop/ lua -vLua 5.1.5  Copyright (C) 1994-2012 Lua.org, PUC-Rio

The above installation project is to get a Lua executable file. The elegance lies in the use of source code installation, the organization of the installation directory makes it easier for us to manage the Lua environment, in the future, the ABI and Lua packages related to Lua5.1.5 will be installed inlib，sharePath, we can even defineLUA_PATH=/usr/local/lua-5.1.5For more convenient referencelua.hAnd so on.

Because the specified installation directory/usr/local/lua-5.1.5It is not in the PATH environment variable, so it is executed directly.luaReportcommand not found: luaHere, we use the method of adding a soft connection to link the executable file to the PATH to achieve the same effect, you can also directly/usr/local/lua-5.1.5/binAdd to environment variable PATH.

Multi-version coexistence

Multi-version coexistence can be achieved by using the source code installation.

 ~/Desktop/luarocks-2.2.2/ ll /usr/local/lua*/usr/local/lua:/usr/local/lua-5.1.5:/usr/local/lua-5.2.3:/usr/local/lua-5.3.1: // ll /usr/local/bin/lua*lrwxr-xr-x  1 root  admin    28B 10 19 23:16 /usr/local/bin/lua -> /usr/local/lua-5.1.5/bin/lualrwxr-xr-x  1 root  admin    28B 10 20 10:08 /usr/local/bin/lua52 -> /usr/local/lua-5.2.3/bin/lualrwxr-xr-x  1 root  admin    28B 10 20 10:12 /usr/local/bin/lua53 -> /usr/local/lua-5.3.1/bin/lualrwxr-xr-x  1 root  admin    29B 10 20 10:12 /usr/local/bin/luac -> /usr/local/lua-5.1.5/bin/luaclrwxr-xr-x  1 root  admin    29B 10 20 10:08 /usr/local/bin/luac52 -> /usr/local/lua-5.2.3/bin/luaclrwxr-xr-x  1 root  admin    29B 10 20 10:11 /usr/local/bin/luac53 -> /usr/local/lua-5.3.1/bin/luac

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