make_dependencies.py

import os
import subprocess
from pathlib import Path

def get_file_dependencies(file_path):
    result = []

    cmd = ['cl', '/nologo', '/Zs', '-Iinclude', '/showIncludes', '/DUSE_ST6', file_path]
    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, universal_newlines=True)

    for line in proc.stdout:
        line = line.strip()

        if not line.startswith("Note: including file:"):
            continue

        stripped_line = line.removeprefix("Note: including file:").lstrip()

        abs_path = os.path.join(os.getcwd(), stripped_line)

        if (Path(os.getcwd()) in Path(abs_path).parents):
            result.append(abs_path)

    return result

def write_file_dependencies(deps_file, src_dirs, obj_dir):
    f = open(deps_file, "w")

    for src_dir in src_dirs:
        for file_name in os.listdir(src_dir):
            if os.path.splitext(file_name)[1] != ".cpp":
                continue

            deps = get_file_dependencies(os.path.join(src_dir, file_name))

            obj_file = os.path.join(obj_dir, Path(file_name).stem + ".obj")
            cpp_file = os.path.join(src_dir, file_name)

            f.write(obj_file + ":\\\n")

            #f.write((" " * 4) + cpp_file + " \\\n")
            for i, dep in enumerate(deps):
                newline_escape = "" if i == len(deps) - 1 else "\\"
                f.write((" " * 4) + os.path.relpath(dep) + newline_escape + "\n")
            #f.write((" " * 4) + deps_file + " \\\n")
            #f.write((" " * 4) + "makefile\n")
            f.write("\n")

    f.close()

def run():
    write_file_dependencies(deps_file='makefile.deps', src_dirs=['src', 'test'], obj_dir='obj')

if __name__ == "__main__":
    run()