From 46c947af7ead0a939fbd7a93c370e7ead2128d07 Mon Sep 17 00:00:00 2001
From: serge-sans-paille <sguelton@redhat.com>
Date: Wed, 18 Aug 2021 23:48:14 +0200
Subject: [PATCH] Have lit preserve SOURCE_DATE_EPOCH

This environment variable has been standardized for reproducible builds. Setting
it can help to have reproducible tests too, so keep it as part of the testing
env when set.

See https://reproducible-builds.org/docs/source-date-epoch/

Differential Revision: https://reviews.llvm.org/D108332
---
 llvm/utils/lit/lit/TestingConfig.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/utils/lit/lit/TestingConfig.py b/llvm/utils/lit/lit/TestingConfig.py
index d534d895e4ba..37558bd5059c 100644
--- a/llvm/utils/lit/lit/TestingConfig.py
+++ b/llvm/utils/lit/lit/TestingConfig.py
@@ -28,7 +28,7 @@ class TestingConfig(object):
                      'TMPDIR', 'TMP', 'TEMP', 'TEMPDIR', 'AVRLIT_BOARD',
                      'AVRLIT_PORT', 'FILECHECK_OPTS', 'VCINSTALLDIR',
                      'VCToolsinstallDir', 'VSINSTALLDIR', 'WindowsSdkDir',
-                     'WindowsSDKLibVersion']
+                     'WindowsSDKLibVersion', 'SOURCE_DATE_EPOCH']
 
         if sys.platform == 'win32':
             pass_vars.append('INCLUDE')