set up frotran development environment in vscode

{
  "version": "2.0.0",
  "_runner": "terminal",
  "tasks":[
    {
      "label": "build_gfortran",
      "type": "shell",
      "windows": {
        "command": "gfortran"
      },
      "linux": {
        "command": "gfortran"
      },
      "osx": {
        "command": "gfortran"
      },
      "args": [
        "-g",
        "${file}",
        "-o",
        "${workspaceRoot}\\${fileBasenameNoExtension}.exe"
      ]
    }
  ],
}

{
  "version": "2.0.0",
  "configurations": [
    {
      "name": "Debug Fortran & build",
      "type": "cppdbg",
      "request": "launch",
      "targetArchitecture": "x86",
      "program": "${workspaceRoot}\\${fileBasenameNoExtension}.exe",
      "miDebuggerPath": "gdb.exe",
      "args": [],
      "stopAtEntry": false,
      "cwd": "${workspaceRoot}",
      "externalConsole": true,
      "preLaunchTask": "build_gfortran"
    }
  ]
}