File reproducible.patch of Package librcc

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File reproducible.patch of Package librcc

From 7278124f0f3f7b894f7649d0cdb433c5a6f6f54a Mon Sep 17 00:00:00 2001
From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
Date: Fri, 20 Jan 2023 11:42:14 +0100
Subject: [PATCH] Allow to override build date with SOURCE_DATE_EPOCH

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.
This date call works with various implementations of date.

Also use UTC to be independent of timezone.

This patch was done while working on reproducible builds for openSUSE.
---
 configure.ac | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 9248faa..451a1c9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,7 +26,9 @@ AC_SUBST(LIBRCC_VERSION_INFO)
 LIBRCC_CVS=`cat VERSION | sed -e s/.*CVS.*/CVS/`
 if test "x$LIBRCC_CVS" = "xCVS"; then
 LIBRCC_CVS=1
-LIBRCC_CVS_DATE=`date +%y%m%d.%H`
+DATE_FMT="+%y%m%d.%H"
+SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-$(date +%s)}"
+LIBRCC_CVS_DATE=$(date -u -d "@$SOURCE_DATE_EPOCH" "$DATE_FMT" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" "$DATE_FMT" 2>/dev/null || date -u "$DATE_FMT")
 else 
 LIBRCC_CVS=0
 LIBRCC_CVS_DATE=0

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File reproducible.patch of Package librcc

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