File 0001-make-package-build-reproducible.patch of Package groff.17893

From 1da8981ac5717b770684caf25e68e29f17a51c11 Mon Sep 17 00:00:00 2001
From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
Date: Tue, 22 Dec 2020 04:51:23 +0100
Subject: [PATCH 1/2] make package build reproducible

Date: 2018-11-01

sometimes our patches touch .man input files
and mdate picks up their mtime for use in man-page headers
so we clamp the mtime to SOURCE_DATE_EPOCH if set
similar to https://www.fabiankeil.de/sourcecode/electrobsd/ElectroBSD-r312620-6cfa243f1516/0079-contrib-groff-mdate.sh-Use-EPOCH_DATE-when-set.diff

upstream commit 677274dafc5dd5f79f2a6d16270b21d2f5a16c5b
rewrote it to similar perl, too
---
 mdate.sh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mdate.sh b/mdate.sh
index d5ef4135..5b0372cd 100644
--- a/mdate.sh
+++ b/mdate.sh
@@ -19,4 +19,7 @@
 #
 # Print the modification date of $1 `nicely'.
 
-perl -MPOSIX -le 'print strftime("%d %B %Y", localtime((stat $ARGV[0])[9]))' $1
+perl -MPOSIX -le '
+$t=((stat $ARGV[0])[9]);
+$t=$ENV{SOURCE_DATE_EPOCH} if($ENV{SOURCE_DATE_EPOCH} && $t > $ENV{SOURCE_DATE_EPOCH});
+print strftime("%d %B %Y", gmtime($t))' $1
-- 
2.26.2