From 237baa14331930e73a46a44abfe35adedc212dc3 Mon Sep 17 00:00:00 2001
From: Patrick Georgi <pgeorgi@google.com>
Date: Fri, 12 Apr 2019 11:08:17 +0200
Subject: [PATCH] util/genbuild_h: Allow operation with older git versions

if git log --no-show-signature is not supported, retry without.

Change-Id: I9ee1f8e887cde5e4d6c5e6958f269c62572cdd53
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32299
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 util/genbuild_h/genbuild_h.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/util/genbuild_h/genbuild_h.sh b/util/genbuild_h/genbuild_h.sh
index 5c45b2b1f8..bafdbc95d7 100755
--- a/util/genbuild_h/genbuild_h.sh
+++ b/util/genbuild_h/genbuild_h.sh
@@ -22,14 +22,20 @@ export LANG=C
 export LC_ALL=C
 export TZ=UTC0
 
+# $1: format string
+get_git_head_data() {
+	LANG= git log --no-show-signature -1 --format="format:$1" 2>/dev/null || \
+	LANG= git log -1 --format="format:$1"
+}
+
 if [ "${BUILD_TIMELESS}" = "1" ]; then
 	GITREV=Timeless
 	TIMESOURCE="fixed"
 	DATE=0
 elif [ "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = "true" ]; then
-	GITREV=$(LANG= git log --no-show-signature -1 --format=format:%h)
+	GITREV=$(get_git_head_data %h)
 	TIMESOURCE=git
-	DATE=$(git log --no-show-signature --pretty=format:%ct -1)
+	DATE=$(get_git_head_data %ct)
 else
 	GITREV=Unknown
 	TIMESOURCE="date"