[PATCH] dpkg-raw: use date of the most recent file instead of "now"

[Cedric Hombourger <Cedric_Hombourger@mentor.com>]

The changelog generated by Isar would use the current date/time
causing each build to be different. Use the date/time of the
most recent file to achieve reproducible builds (assuming files
contained in the payload have the same contents and timestamps).
In the event where the dpkg-raw package is not shipping any
files, Isar will default to the current date/time.

Disposition: Submit upstream
Signed-off-by: Cedric Hombourger <Cedric_Hombourger@mentor.com>
---
 meta/classes/debianize.bbclass | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/meta/classes/debianize.bbclass b/meta/classes/debianize.bbclass
index 510aebd..90edcdc 100644
--- a/meta/classes/debianize.bbclass
+++ b/meta/classes/debianize.bbclass
@@ -6,7 +6,12 @@
 CHANGELOG_V ?= "${PV}"
 
 deb_add_changelog() {
-	date=$( LANG=C date -R )
+	timestamp=$(find ${D}/ -type f -printf "%T@ %p\n"|grep -v ${D}/debian/|sort -n|awk '{print $1 }'|tail -n 1)
+	if [ -n "${timestamp}" ]; then
+		date=$(LANG=C date -R -d @${timestamp})
+	else
+		date=$(LANG=C date -R)
+	fi
 	cat <<EOF > ${S}/debian/changelog
 ${PN} (${CHANGELOG_V}) UNRELEASED; urgency=low
 
-- 
2.11.0