lua53

意图

学习 lua 源码

能力

1. 明白lua的原理和设计意图
2. 能开发第3方库，扩展lua
3. 能调试解决问题
4. 能优化

编译

1. 下载mingw64

1. (下载链接参考)[https://code.visualstudio.com/docs/cpp/config-mingw]
2. 安装完后添加环境变量
3. bin下复制mingw32-make.exe为make.exe

2. vscode安装

1. EmmyLua
2. C++
3. C++ Intellisense

3. 创建debug launch.json

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) 启动",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/src/lua.exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${fileDirname}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "miDebuggerPath": "gdb",
            "setupCommands": [
                {
                    "description": "为 gdb 启用整齐打印",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ]
        }
    ]
}

4. make

$ cd lua53
$ make mingw -- 生成lua.exe在src
$ make clean -- 清理

5. debug

1. gdb src/lua.exe
2. vscode F5

要点

1. 支持gdb调试

-O0表示优化等级0，编辑添加-g，链接不要有-s

2. strip用于去掉调试信息

$(LUA_A): $(BASE_O)
	$(AR) $@ $(BASE_O)
	# $(RANLIB) $@ # 注了，否则调试不了lua53.dll
mingw:
	$(MAKE) "LUA_A=lua53.dll" "LUA_T=lua.exe" \
	"AR=$(CC) -shared -o" "RANLIB=strip --strip-unneeded" \
	"SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=" lua.exe
	$(MAKE) "LUAC_T=luac.exe" luac.exe