VSCode 无法打开 libc-start.c

Issue Description

VSCode 调试 stopAtEntry 或者到最后一步报错：

无法打开“libc-start.c”: 无法读取文件'vscode-remote://ssh-remote+<IP>/build/glibc-S7xCS9/glibc-2.27/csu/libc-start.c' (Error: 无法解析不存在的文件"vscode-remote://ssh-remote+<IP>/build/glibc-S7xCS9/glibc-2.27/csu/libc-start.c")。

Root Cause

系统中没有 glibc 源码可供调试

Solution

1. 安装 glibc 源码

   sudo apt install glibc-source
   cd /usr/src/glibc/
   sudo tar -xvf glibc-2.27.tar.xz
   

2. 在 launch.json 中添加 sourceFileMap 配置项

   {
      "version": "0.2.0",
      "configurations": [
         {
            "name": "launch after cmake build",
            "type": "cppdbg",
            "request": "launch",
            "program": "${fileDirname}/build/play",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "preLaunchTask": "CMake Build",
            "miDebuggerPath": "/usr/bin/gdb",
            "sourceFileMap": {"/build/glibc-S7xCS9": "/usr/src/glibc"}
         }
      ]
   }
   

Reference

https://blog.csdn.net/slc1112/article/details/109686361