others-How to debug lua application in IntellijIDEA with emmylua plugin

Jan 4, 2022

1. Purpose

In this post, I would demo how to add debug(breakpoint) capabilities to lua application developement in IntellijIDEA and emmylua plugin.

2. The solution.

2.1 What is emmylua plugin?

EmmyLua is a plugin for Jetbrains IDE, To use EmmyLua you should have installed Jetbrains IDE (We recommend install IntelliJ IDEA Community), and then install EmmyLua plugin to your IDE. EmmyLua can be installed to all products of Jetbrains, Requires version 2017.1 or above.

It supports:

Syntax highlighting
- Highlight global value
- Highlight local/param value
- Highlight up value
Code completion
- Keyword completion
- Basic completion
- Type inferred based completion
Debugger

2.2 How to create lua application with IntelliJ IDEA?

After installing the emmylua plugin, restart IntelliJ IDEA, then you can create lua project as follows:

2.3 How to debug lua application locally?

To debug lua application, you should get luasocket installed first. Because lua debug use the C/S(client/server) communication style, it would start a debug server, then the client connect to it to implement the debug process.

2.3.1 Install luasocket

LuaSocket is a Lua extension library that is composed by two parts: a C core that provides support for the TCP and UDP transport layers, and a set of Lua modules that add support for functionality commonly needed by applications that deal with the Internet.

➜  ~ sudo luarocks install luasocket
Installing https://luarocks.org/luasocket-3.0rc1-2.src.rock

luasocket 3.0rc1-2 depends on lua >= 5.1 (5.4-1 provided by VM)
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/buffer.c -o src/buffer.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/auxiliar.c -o src/auxiliar.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/options.c -o src/options.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/timeout.c -o src/timeout.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/io.c -o src/io.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/usocket.c -o src/usocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/serial.c -o src/serial.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o socket/serial.so src/buffer.o src/auxiliar.o src/options.o src/timeout.o src/io.o src/usocket.o src/serial.o
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/luasocket.c -o src/luasocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/timeout.c -o src/timeout.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/buffer.c -o src/buffer.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/io.c -o src/io.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/auxiliar.c -o src/auxiliar.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/options.c -o src/options.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/inet.c -o src/inet.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/except.c -o src/except.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/select.c -o src/select.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/tcp.c -o src/tcp.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/udp.c -o src/udp.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/usocket.c -o src/usocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o socket/core.so src/luasocket.o src/timeout.o src/buffer.o src/io.o src/auxiliar.o src/options.o src/inet.o src/except.o src/select.o src/tcp.o src/udp.o src/usocket.o
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/mime.c -o src/mime.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o mime/core.so src/mime.o
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/buffer.c -o src/buffer.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/auxiliar.c -o src/auxiliar.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/options.c -o src/options.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/timeout.c -o src/timeout.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/io.c -o src/io.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/usocket.c -o src/usocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/unix.c -o src/unix.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o socket/unix.so src/buffer.o src/auxiliar.o src/options.o src/timeout.o src/io.o src/usocket.o src/unix.o
No existing manifest. Attempting to rebuild...
luasocket 3.0rc1-2 is now installed in /usr/local (license: MIT)

2.3.2 What is mobdebug?

mobdebug is a remote debugger implemented in pure lua, which depends on luasocket. The basic communication method is to use strings to transmit corresponding control instructions and execution results between the target program and the IDE. The data that mobdebug interacts with the remote end is direct Wrapped into a string in Lua format.

Until now(2022-1-4), mobdebug supports Lua (including Lua 5.1, Lua 5.2, Lua 5.3, Lua 5.4, and LuaJIT 2.x).

2.3.3 How to install mobdebug?

The installation of mobdebug is simple, just make src/mobdebug.lua available to your script. See examples/README and examples/*.lua for examples of how to use the module.

Or you can just download this file directly from this link :

https://github.com/pkulchenko/MobDebug/blob/master/src/mobdebug.lua

After installation, the project directory tree is as follows:

.
├── hello-module
│   ├── hello-module.iml
│   └── src
│       ├── h1.lua
│       └── mobdebug.lua
└── my-lua-test-project.iml

2.3.4 How to use mobdebug/luasocket to debug lua app?

Now, open our target app src/h1.lua, and add this line to it:

require("mobdebug").start()

Then click to debug the app:

Now it works!

You can see the variable values in debug window:

2.4 Some problems and solutions

If you encounter problems, you can refer to the following solutions:

2.4.1 Problem `module 'socket' not found`

If you get this error:

Start mobdebug server at port:8172
Waiting for process connection...
/usr/local/bin/lua: .../intellij-emmylua/classes/debugger/mobdebug/mobdebug.lua:102: module 'socket' not found:

	no field package.preload['socket']

	no file '/usr/local/share/lua/5.4/socket.lua'

	no file '/usr/local/share/lua/5.4/socket/init.lua'

	no file '/usr/local/lib/lua/5.4/socket.lua'

	no file '/usr/local/lib/lua/5.4/socket/init.lua'

	no file './socket.lua'

	no file './socket/init.lua'

	no file '/Users/bswen/Library/Application Support/IntelliJIdea2019.3/intellij-emmylua/classes/debugger/mobdebug/socket.lua'

	no file '/Users/bswen/lua-projects/src/socket.lua'

	no file ''

	no file '/usr/local/lib/lua/5.4/socket.so'

	no file '/usr/local/lib/lua/5.4/loadall.so'

	no file './socket.so'

stack traceback:

	[C]: in function 'require'

	.../intellij-emmylua/classes/debugger/mobdebug/mobdebug.lua:102: in main chunk

	[C]: in function 'require'

	(command line):1: in main chunk

	[C]: in ?

The reason for this problem is that you have not installed luasocket correctly.

If you are using macos, you can just(Other OS can just refer to this):

Install luarocks:

brew install luarocks

Then use luarocks to install luasocket:

➜  ~ sudo luarocks install luasocket
Installing https://luarocks.org/luasocket-3.0rc1-2.src.rock

luasocket 3.0rc1-2 depends on lua >= 5.1 (5.4-1 provided by VM)
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/buffer.c -o src/buffer.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/auxiliar.c -o src/auxiliar.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/options.c -o src/options.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/timeout.c -o src/timeout.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/io.c -o src/io.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/usocket.c -o src/usocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/serial.c -o src/serial.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o socket/serial.so src/buffer.o src/auxiliar.o src/options.o src/timeout.o src/io.o src/usocket.o src/serial.o
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/luasocket.c -o src/luasocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/timeout.c -o src/timeout.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/buffer.c -o src/buffer.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/io.c -o src/io.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/auxiliar.c -o src/auxiliar.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/options.c -o src/options.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/inet.c -o src/inet.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/except.c -o src/except.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/select.c -o src/select.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/tcp.c -o src/tcp.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/udp.c -o src/udp.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/usocket.c -o src/usocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o socket/core.so src/luasocket.o src/timeout.o src/buffer.o src/io.o src/auxiliar.o src/options.o src/inet.o src/except.o src/select.o src/tcp.o src/udp.o src/usocket.o
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/mime.c -o src/mime.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o mime/core.so src/mime.o
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/buffer.c -o src/buffer.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/auxiliar.c -o src/auxiliar.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/options.c -o src/options.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/timeout.c -o src/timeout.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/io.c -o src/io.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/usocket.c -o src/usocket.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -O2 -fPIC -I/usr/local/opt/lua/include/lua5.4 -c src/unix.c -o src/unix.o -DLUA_COMPAT_APIINTCASTS -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUASOCKET_API=__attribute__((visibility("default"))) -DUNIX_API=__attribute__((visibility("default"))) -DMIME_API=__attribute__((visibility("default")))
env MACOSX_DEPLOYMENT_TARGET=10.8 gcc -bundle -undefined dynamic_lookup -all_load -o socket/unix.so src/buffer.o src/auxiliar.o src/options.o src/timeout.o src/io.o src/usocket.o src/unix.o
No existing manifest. Attempting to rebuild...
luasocket 3.0rc1-2 is now installed in /usr/local (license: MIT)

2.4.2 Problem `lua5.3: No such file or directory`

By default, luarocks depends on lua5.4, so you can just remove the lua/luarocks ,and then reinstall them.

➜  ~ brew uninstall --force lua luarocks
Uninstalling /usr/local/Cellar/lua/5.4.3_1... (29 files, 744.4KB)

➜  ~

then reinstall them:

➜  ~ sudo brew install lua luarocks

2.4.3 Problem `mobdebug.lua:777: bad argument #1 to 'receive' (string expected, got light userdata)`

Remove your project from IntelliJ IDEA, then re-create a new lua project , set the correct LUA SDK path.

3. Summary

In this post, I demonstrated how to do local debug inside IntelliJ IDEA with emmylua plugin, the keypoint is to use luarocks install the socket and mobdebug module to enable the debug process. That’s it, thanks for your reading.