From 42d5fa1602935e76187a14ba493cd62d7f0fb02c Mon Sep 17 00:00:00 2001
From: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Date: Mon, 21 Sep 2026 15:54:25 +0300
Subject: [PATCH] Skip optimisations to speedup `test_freeze` rebuild
 (GH-157264) (cherry picked from commit
 a6ad448237755cfd2d52d6002f7c38f5f67b5ab2)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
---
 Tools/freeze/test/freeze.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Tools/freeze/test/freeze.py b/Tools/freeze/test/freeze.py
index 1e3687dbb807a6..f4330076f225b5 100644
--- a/Tools/freeze/test/freeze.py
+++ b/Tools/freeze/test/freeze.py
@@ -64,6 +64,16 @@ def find_opt(args, name):
     return -1
 
 
+def remove_opt(args: list[str], name: str) -> None:
+    opt = f'--{name}'
+    optstart = f'{opt}='
+    args[:] = [
+        arg
+        for arg in args
+        if arg != opt and not arg.startswith(optstart)
+    ]
+
+
 def ensure_opt(args, name, value):
     opt = f'--{name}'
     pos = find_opt(args, name)
@@ -128,6 +138,10 @@ def prepare(script=None, outdir=None):
     # Run configure.
     print(f'configuring python in {builddir}...')
     config_args = shlex.split(sysconfig.get_config_var('CONFIG_ARGS') or '')
+    # Optimisations such as LTO and PGO only slow down the build of this
+    # throwaway interpreter without affecting what the test checks.
+    remove_opt(config_args, 'enable-optimizations')
+    remove_opt(config_args, 'with-lto')
     cmd = [os.path.join(srcdir, 'configure'), *config_args]
     ensure_opt(cmd, 'cache-file', os.path.join(outdir, 'python-config.cache'))
     prefix = os.path.join(outdir, 'python-installation')