asm-differ now works on Windows

You need to put less.exe and tail.exe on PATH somewhere. I got tail.exe
from UnxUtils and less.exe from github.com/jftuga/less-Windows. Also you
need to put powerpc-eabi-objdump.exe (from devkitPPC) into
tools/mwcc_compiler.

tools/asm-differ/diff.py

@@ -381,6 +381,7 @@ def complete_symbol(
 import itertools
 import json
 import os
+import platform
 import queue
 import re
 import string
@@ -399,7 +400,8 @@ def complete_symbol(
 
 try:
     import watchdog
-    from colorama import Back, Fore, Style
+    from colorama import Back, Fore, Style, just_fix_windows_console
+    just_fix_windows_console()
 except ModuleNotFoundError as e:
     fail(MISSING_PREREQUISITES.format(e.name))
 
@@ -3599,7 +3601,10 @@ def display_thread(self, initial_output: str) -> None:
             self.less_proc = None
             if ret != 0:
                 # fix the terminal
-                os.system("tput reset")
+                if platform.system() == "Windows":
+                    os.system("cls")
+                else:
+                    os.system("tput reset")
             if ret != 0 and self.pending_update is not None:
                 # killed by program with the intent to refresh
                 output = self.pending_update

tools/asm-differ/diff_settings.py

@@ -1,4 +1,5 @@
 import os
+import sys
 import platform
 from typing import Optional
 
@@ -28,7 +29,12 @@ def apply(config, _):
     config["make_command"] = ["ninja"]
 
     # TODO gc-wii-binutils
-    devkitpro = env("DEVKITPRO", "/opt/devkitpro")
-    devkitppc = env("DEVKITPPC", f"{devkitpro}/devkitPPC")
-    objdump = f"{devkitppc}/bin/powerpc-eabi-objdump{get_exe_suffix()}"
+    objdump = f"tools/mwcc_compiler/powerpc-eabi-objdump{get_exe_suffix()}"
+    if not os.path.exists(objdump):
+        devkitpro = env("DEVKITPRO", "/opt/devkitpro")
+        devkitppc = env("DEVKITPPC", f"{devkitpro}/devkitPPC")
+        objdump = f"{devkitppc}/bin/powerpc-eabi-objdump{get_exe_suffix()}"
+    if not os.path.exists(objdump):
+        print(f"ERROR: could not find powerpc-eabi-objdump{get_exe_suffix()}", file=sys.stderr)
+        sys.exit(1)
     config["objdump_executable"] = objdump