34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
From 7278124f0f3f7b894f7649d0cdb433c5a6f6f54a Mon Sep 17 00:00:00 2001
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From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
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Date: Fri, 20 Jan 2023 11:42:14 +0100
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Subject: [PATCH] Allow to override build date with SOURCE_DATE_EPOCH
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in order to make builds reproducible.
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See https://reproducible-builds.org/ for why this is good
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and https://reproducible-builds.org/specs/source-date-epoch/
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for the definition of this variable.
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This date call works with various implementations of date.
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Also use UTC to be independent of timezone.
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This patch was done while working on reproducible builds for openSUSE.
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---
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configure.ac | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/configure.ac b/configure.ac
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index 9248faa..451a1c9 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -26,7 +26,9 @@ AC_SUBST(LIBRCC_VERSION_INFO)
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LIBRCC_CVS=`cat VERSION | sed -e s/.*CVS.*/CVS/`
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if test "x$LIBRCC_CVS" = "xCVS"; then
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LIBRCC_CVS=1
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-LIBRCC_CVS_DATE=`date +%y%m%d.%H`
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+DATE_FMT="+%y%m%d.%H"
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+SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-$(date +%s)}"
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+LIBRCC_CVS_DATE=$(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")
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else
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LIBRCC_CVS=0
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LIBRCC_CVS_DATE=0
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