From 22de4ce498b656063e236350e8404981c13e1cd8 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@redhat.com>
Date: Tue, 9 Apr 2019 19:54:10 +0200
Subject: bpo-36235: Fix distutils test_customize_compiler() on macOS
 (GH-12751)

Set CUSTOMIZED_OSX_COMPILER to True to disable
_osx_support.customize_compiler().
---
 Lib/distutils/tests/test_sysconfig.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Lib/distutils/tests/test_sysconfig.py b/Lib/distutils/tests/test_sysconfig.py
index 71754dd..9e2aeb8 100644
--- a/Lib/distutils/tests/test_sysconfig.py
+++ b/Lib/distutils/tests/test_sysconfig.py
@@ -73,6 +73,9 @@ class SysconfigTestCase(support.EnvironGuard,
         comp = compiler()
         old_vars = dict(sysconfig._config_vars)
         try:
+            # On macOS, disable _osx_support.customize_compiler()
+            sysconfig._config_vars['CUSTOMIZED_OSX_COMPILER'] = 'True'
+
             for key, value in sysconfig_vars.items():
                 sysconfig._config_vars[key] = value
             sysconfig.customize_compiler(comp)
-- 
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