头文件只能感应设置
通过编辑 .vscode/c_cpp_properties.json文件
(有波浪线，说明没有感应到，点击小灯泡，–> Edit includePath setting)
{
"configurations": [
{
"name": "Linux",
"browse": {
"path": [
"${workspaceFolder}"
],
"limitSymbolsToIncludedHeaders": true
},
"includePath": [
"${workspaceFolder}",
"${workspaceFolder}/lib/gstreamer"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++17",
"intelliSenseMode": "clang-x64"
}
],
"version": 4
}在includePath下，可以添加工程内的和系统内的依赖