From 3f7f70c746277e1a89978166533374a8b9bd5407 Mon Sep 17 00:00:00 2001
From: Alex Kiernan <alex.kiernan@gmail.com>
Date: Wed, 25 Jan 2023 17:05:25 +0000
Subject: [PATCH] Adhere to the SOURCE_DATE_EPOCH standard

Adhere to the SOURCE_DATE_EPOCH standard and use it's date when set
otherwise fall back to the default behaviour.

Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 599b1452a05a..7776b0f0d63d 100644
--- a/Makefile
+++ b/Makefile
@@ -109,7 +109,7 @@ all: keyctl request-key key.dns_resolver cxx
 ###############################################################################
 #RPATH = -Wl,-rpath,$(LIBDIR)
 
-VCPPFLAGS	:= -DPKGBUILD="\"$(shell date -u +%F)\""
+VCPPFLAGS	:= -DPKGBUILD="\"$(date --utc --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}" +%F)\""
 VCPPFLAGS	+= -DPKGVERSION="\"keyutils-$(VERSION)\""
 VCPPFLAGS	+= -DAPIVERSION="\"libkeyutils-$(APIVERSION)\""
 
-- 
2.39.0