VSCode Clang file no found in header in C++ project

Question

I'm a noob please don't hate me.

I'm using cmake and vscode for a cpp project.

• Compiling is fine but clang says it can't find my headers and underline them although it also show me the path so it knows where they are... file not found
• including the relative path fixes the problem but its less clean :

"../include/myHeader.hpp" vs "myHeader.hpp"

I have export compile command on in my presets :

{
    "version": 2,
    "configurePresets": [
        {
            "name": "debug",
            "displayName": "Debug",
            "binaryDir": "${sourceDir}/build",
            "generator": "Unix Makefiles",
            "cacheVariables": {
                "CMAKE_BUILD_TYPE": "Debug",
                "CMAKE_EXPORT_COMPILE_COMMANDS": "ON",
                "CMAKE_CXX_FLAGS_INIT": "-std=c++17 -g -Wall -Wextra -Wpedantic -Werror -Weffc++  -Wshadow -O0"
            }
        },
        {
            "name": "release",
            "displayName": "Release",
            "binaryDir": "${sourceDir}/build",
            "generator": "Unix Makefiles",
            "cacheVariables": {
                "CMAKE_BUILD_TYPE": "Release",
                "CMAKE_CXX_FLAGS_INIT": "-std=c++17 -march=native -flto -O3 -DNDEBUG"
            }
        }
    ]
}

and in my vscode settings:

     "C_Cpp.intelliSenseEngine": "disabled",
    "C_Cpp.configurationWarnings": "disabled",
    "clangd.path": "/home/pa/.config/Code/User/globalStorage/llvm-vs-code-extensions.vscode-clangd/install/16.0.2/clangd_16.0.2/bin/clangd",
    "clangd.arguments": [
        "-log=verbose",
        "-pretty",
        "--background-index",
        "--compile-commands-dir=${workspaceFolder}/build/",
        "--completion-style=detailed"
        // "--query-driver=/bin/arm-buildroot-linux-gnueabihf-g++", // for cross-compile usage
    ],
    "[cpp]": {
        "editor.defaultFormatter": "llvm-vs-code-extensions.vscode-clangd"

If someone knows how to fix this it would be great...
Thanks !