VSCode无法打开“libc-start.c”

问题

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+xmake/build/glibc-S9d2JN/glibc-2.27/csu/libc-start.c'

原因

系统中没有glibc源码可供调试

解决

1. 安装glibc源码

   user@/usr/src $ wget http://ftp.gnu.org/gnu/glibc/glibc-2.27.tar.gz
   user@/usr/src $ sudo tar -zxf glibc-2.27.tar.gz
   

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": "${fileDirname}/${fileBasenameNoExtension}",
         "args": [],
         "stopAtEntry": false,
         "cwd": "${workspaceFolder}",
         "environment": [],
         "externalConsole": false,
         "MIMode": "gdb",
         "preLaunchTask": "CMake Build",
         "miDebuggerPath": "/usr/bin/gdb",
         "sourceFileMap": {"/build/glibc-S9d2JN": "/usr/src/glibc"}
      }
      ]
   }