#! /usr/bin/env python3

import sys, os, os.path, subprocess, time

args = ["gcc"] + sys.argv[1:]
try:
    output = args[args.index("-o", 1) + 1]
    if not output.endswith("Modules/_math.o"):
        raise ValueError(output)

except ValueError:  # Not compiling _math.c
    os.execvp("gcc", args)

else:
    if os.path.exists(output):  # Assume recompiling it
        print("RECOMPILE", file=sys.stderr)
        time.sleep(5)  # Wait for initial compilation
        print("RECOMPIILE TRUNCATING", file=sys.stderr)
        with open(output, "wb"):  # Emulate creating new empty file
            pass
        time.sleep(5)  # Linker for other module may run here
        subprocess.check_call(args)
        print("RECOMPILE FINISHED", file=sys.stderr)
    
    else:  # Assume initial compilation
        print("INITIAL COMPILE", file=sys.stderr)
        subprocess.check_call(args)
        time.sleep(9)  # Wait for recompilation to truncate
        print("INITIAL COMPILE FINISHED", file=sys.stderr)