Faster (or Incremental) builds with clang++ on Windows

Question

I am developing a C++ project using VS Code and clang++ as a compiler. My build task of VS Code is as follows:

{
        "type": "cppbuild",
        "label": "Clang Test Build",
        "command": "C:\\clang+llvm-18.1.8-x86_64-pc-windows-msvc\\bin\\clang++.exe",
        "args": [
            "-fdiagnostics-color=always",
            "-g",
            "${workspaceFolder}\\src\\Tests\\*.cpp",
            "${workspaceFolder}\\src\\jet\\*.cpp",
            "-o",
            "${workspaceFolder}\\bin\\Tests\\tests.exe",
            "-I${workspaceFolder}\\src\\external\\googletest\\include",
            "-I${workspaceFolder}\\src\\jet",
            "-L${workspaceFolder}\\src\\external\\googletest\\lib",
            "-lgtest", "-lgtest_main"
        ],
        "options": {
            "cwd": "${fileDirname}"
        },
        "problemMatcher": [
            "$gcc"
        ],
        "group": "build",
        "detail": "compiler: \"C:\\clang+llvm-18.1.8-x86_64-pc-windows-msvc\\bin\\clang++.exe\""
}

This is the absolute minimum of the project. I have src folder with UnitTests and the acutal application. There is an external folder for dependencies. Once the project grew to say about 40-50 cpp files, the builds are taking super long. Any way I can enable incremental linking in this? I know that with visual studio I can use the flag \I to enable, Is there such a method for clang++? If not, what is my alternative? Searching around didn't give me a lot of details regarding this.