From 4c09adc3199dc1421a8d44d9f5cb3d70a930682e Mon Sep 17 00:00:00 2001
From: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
Date: Sun, 30 Jan 2022 13:32:06 +0530
Subject: [PATCH] speed up compilation of peg_generator on windows

---
 Tools/peg_generator/pegen/build.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Tools/peg_generator/pegen/build.py b/Tools/peg_generator/pegen/build.py
index c69e5c9a5f26a6..dd69f1057a7126 100644
--- a/Tools/peg_generator/pegen/build.py
+++ b/Tools/peg_generator/pegen/build.py
@@ -1,6 +1,7 @@
 import itertools
 import pathlib
 import shutil
+import sys
 import sysconfig
 import tempfile
 import tokenize
@@ -61,6 +62,9 @@ def compile_c_extension(
     extra_link_args = get_extra_flags("LDFLAGS", "PY_LDFLAGS_NODIST")
     if keep_asserts:
         extra_compile_args.append("-UNDEBUG")
+    if sys.platform == "win32":
+        extra_compile_args.append("/Od")
+        extra_link_args.append("/LTCG:OFF")
     extension = [
         Extension(
             extension_name,