vscode找不到头文件

问题遇到的现象和发生背景

vscode 老是找不到头文件。
#include "cJSON.h"

task.json如下

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "echo",
            "type": "shell",
            "command": "gcc",
            "args": [
                "-g", 
                "${file}", 
                "-o", 
                "${fileBasenameNoExtension}.exe",
                "-I",
                "F:\\vscodDemo\\incl",
                "-fexec-charset=GBK"//解决中文乱码

                
            ]
        }
    ],
    "presentation": {
        "echo": true,
        "reveal": "always",
        "focus": false,
        "panel": "shared", 
        "showReuseMessage": true,
        "clear": false
    }
}

c_cpp_properties.json如下：

{
    "configurations": [
        {
            "name": "Win32",
            "includePath": [
                "${workspaceRoot}",
                "C:\\Program Files\\mingw64",
                "F:\\vscodDemo\\incl\\"
            ],
            "defines": [
                "_DEBUG",
                "UNICODE",
                "__GNUC__=6",
                "__cdecl=__attribute__((__cdecl__))"
            ],
            "intelliSenseMode": "windows-gcc-x64",
            "browse": {
                "limitSymbolsToIncludedHeaders": true,
                "databaseFilename": "",
                "path": [
                    "${workspaceRoot}",
                    "C:\\Program Files\\mingw64"
                ]
            }
        }
    ],
    "version": 4
}

头文件放在 F:\vscodDemo\incl
编译时候
cd "f:\vscodDemo\Cdemo_MD5" ; if ($?) { gcc Cdemo1.c -o Cdemo1 } ; if ($?) { .\Cdemo1 }
报错如下 C:\Users\ADMINI~1\AppData\Local\Temp\cc8WJLHx.o:Cdemo1.c:(.text+0x4a): undefined reference to `cJSON_Parse'

网上的方法都试过了，还是不行

报错是Cdemo1.c文件里面cJSON_Parse没定义
你放的代码哪一句跟这个有关系？

检查下所示的文件名，是否存在，路径在哪里