20220111c_debug

Jan 11, 2022

Windows c debug

使用 windows vscode 进行c debug:

下载C/C++ 插件, 首先先生成执行文件: gcc main.c add.c -ledit -g -o add

此时会生成add.exe 文件。

然后项目根目录生成.vscode - launch.json, 内容为:

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{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "(gdb) Attach",
      "type": "cppdbg",
      "request": "launch",
      "args": [],
      "stopAtEntry": false,
      "program": "${fileDirname}/add",
      "cwd": "${fileDirname}",
      "environment": [],
      "externalConsole": false,
      "MIMode": "gdb",
      "setupCommands": [
        {
          "description": "为gdb启用整齐打印",
          "text": "-enable-pretty-printing",
          "ignoreFailres": true
        }
      ]
    }
  ]
}

按F5 即可启动。

当前办法是每次构建需要自己先执行下生成命令，然后按F5. 之后优化。

Mac c debug

操作如同上面, 不过可以增加一个Task简约操作:

tasks.json

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{
  "tasks": [
    {
      "type": "cppbuild",
      "label": "C/C++: gcc 生成活动文件",
      "command": "/usr/bin/gcc",
      "args": ["-g", "${file}", "mpc.c", "-ledit", "-o", "${fileDirname}/ss"],
      "options": {
        "cwd": "${fileDirname}"
      },
      "problemMatcher": [
        "$gcc"
      ],
      "group": "build",
      "detail": "编译器: /usr/bin/gcc"
    }
  ]
}

此时 Shift+Command+p 点击 Tasks: Run Task. 这样会生成如手工生成的文件: gcc mpc.c ss.c -g -ledit -o ss

然后附以launch.json:

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{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "(lldb) Attach",
      "type": "cppdbg",
      "request": "launch",
      "args": [],
      "stopAtEntry": false,
      "program": "${fileDirname}/ss",
      "cwd": "${fileDirname}",
      "environment": [],
      "externalConsole": true,
      "MIMode": "lldb",
      "setupCommands": [
        {
          "description": "为gdb启用整起打印",
          "text": "-enable-pretty-printing",
          "ignoreFailres": true
        }
      ]
    }
  ]
}

以上mac就能初步享受断点开发了。操作繁琐一些，先使用再看看。

更新vscode 的cpp插件出现Unable to start debugging. LLDB exited unexpectedly with exit code 134 (0x86).报错。原始是cpp插件不是正式版，点击切换为正式发行版即正常。