cannot open source file "locale.h" (dependency of "iostream")

Question

I continue to run into this include error / cannot open source file. I have now also tried resetting all of vs codes setting to default, but nothing I have tried has worked so far. Any advice on where to look would, or what's causing this would be extremely appreciated!

I have tried editing configurations in the json, adding to and editing the include paths and a few other long shot changes that I've come across on here.

I included a screen shot of the errors that I am currently encountering. I read somewhere that installing xcode fixed this issue for other people. But I don't use xcode, nor do I really want to.

My compiler is brew g++-11, I have also checked to make sure that the path in the json and the actual path match. I'm kind of at a loss what to do, I tried asking my professors today for help and they were just as lost. Any advice on where to look for a solution would be amazing.

I have also tried changing the include path from "${workspaceFolder}/**" to "${workspaceFolder}/inc". Which didn't work either.

Here is the current c_cpp_properties.json

"configurations": [
    {
        "name": "Mac",
        "includePath": [
            "${workspaceFolder}/**"
        ],
        "defines": [],
        "macFrameworkPath": [],
        "compilerPath": "/usr/local/bin/gcc-11",
        "cStandard": "gnu17",
        "cppStandard": "gnu++17",
        "intelliSenseMode": "macos-gcc-x64"
    }
],
"version": 4

I also tried to check the intellisense extension settings, but that is admittedly a bit outside of my scope.

Answer 1

I fixed this after some settings are changed. Listed as below for your reference.

• Compiler Path: /usr/bin/clang++
• IntelliSense mode: macos-clang-64

I don't know why. But it works.

BTW: my platform is Mac

Answer 2

当这发生在我身上时，我将编译器中的 bin 文件夹添加到系统环境变量中，此视频可能对您有所帮助

Answer 3

I had the same issue and here is how I solved it :

• Open terminal, use which XXX where XXX is your compiler and copy the path
• On VSC go to Configuration -> "C_Cpp › Default: Compiler Path" and paste the path

It should now work, however I never used c_cpp_properties.json file.

Answer 4

I had the same problem. Adding this to the include path fixed it: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1

I got the path from running: gcc -v -E -x c++ -

Which outputs information about your gcc compiler. I'm on an M1 Mac running Monterey.

This is my vscode config:

{
    "configurations": [
        {
            "name": "Mac",
            "includePath": [
                "${workspaceFolder}/**",
                "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1"
            ],
            "defines": [],
            "macFrameworkPath": [],
            "compilerPath": "/opt/homebrew/bin/gcc-11",
            "cStandard": "gnu17",
            "cppStandard": "gnu++17"
        }
    ],
    "version": 4
}

As you see, the compiler is homebrew but the include path is xcode.