From 760763e9957840f1983a5006f4e66d6920ec496e Mon Sep 17 00:00:00 2001
From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
Date: Wed, 19 Jul 2017 06:17:19 +0200
Subject: [PATCH] Allow to override build date

in order to make builds reproducible.
See https://reproducible-builds.org/ for why this is good
and https://reproducible-builds.org/specs/source-date-epoch/
for the definition of this variable.

Signed-off-by: Bernhard M. Wiedemann <bwiedemann@suse.de>
---
 hack/make.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hack/make.sh b/hack/make.sh
index b7d59ba94a..7d18d649b5 100755
--- a/hack/make.sh
+++ b/hack/make.sh
@@ -68,7 +68,7 @@ DEFAULT_BUNDLES=(
 )
 
 VERSION=$(< ./VERSION)
-! BUILDTIME=$(date --rfc-3339 ns 2> /dev/null | sed -e 's/ /T/')
+! BUILDTIME=$(date -u -d "@${SOURCE_DATE_EPOCH:-$(date +%s)}" --rfc-3339 ns 2> /dev/null | sed -e 's/ /T/')
 if [ "$DOCKER_GITCOMMIT" ]; then
 	GITCOMMIT="$DOCKER_GITCOMMIT"
 elif command -v git &> /dev/null && [ -d .git ] && git rev-parse &> /dev/null; then