g++ builds in wrong directory: ${workspaceFolder}\file.exe instead of ${fileDirname}\file.exe

Question

Summary:

While in tasks.json the destination argument for g++ is clearly "${fileDirname}\\${fileBasenameNoExtension}.exe", it decides to build in "${workplaceFolder}\\${fileBasenameNoExtension}.exe" ...

Example case:

folder structure:

• cpp
  • .vscode
    • tasks.json
  • folder1
    • folder2
      • example.cpp

in tasks.json:

{
    "version": "2.0.0",
    "tasks": [
    {
      "type": "cppbuild",
      "label": "C/C++: g++.exe build active file",
      "command": "C:\\dev\\mingw-w64\\x86_64-8.1.0-posix-seh-rt_v6-rev0\\mingw64\\bin\\g++.exe",
      "args": [
        "-g",
        "${file}",
        "-o",
        "${fileDirname}\\${fileBasenameNoExtension}.exe"
      ],
      "options": { "cwd": "C:\\dev\\mingw-w64\\x86_64-8.1.0-posix-seh-rt_v6-rev0\\mingw64\\bin"  },
      "problemMatcher": [ "$gcc" ],
      "group": { "kind": "build",  "isDefault": true   },
      "detail": "compiler: C:\\dev\\mingw-w64\\x86_64-8.1.0-posix-seh-rt_v6-rev0\\mingw64\\bin\\g++.exe"
    }
  ]
}

in example.cpp:

#include <iostream>
int main()
{
  std::cout << "Why do i not get compiled in "cpp/folder1/folder2"?";
  return 0;
}

In vscode with cpp folder opened as workplace: Pressing Ctrl+Shift+B to build now causes g++ to build the example.exe at cpp/example.exe.

Answer 1

Known issue and one that got fixed yesterday. Have to wait for the next C/c++ vscode extension update:

https://github.com/microsoft/vscode-cpptools/issues/6501