From b9599a6c8073b633b6b94b015cf54f9ea79f0164 Mon Sep 17 00:00:00 2001
From: Arturo Buzarra <arturo.buzarra@digi.com>
Date: Wed, 2 Jun 2021 19:28:55 +0200
Subject: [PATCH] build.sh: add support to set build timestamp

By default is enabled the reproducible builds feature and to provide a real
timestamp for the build system, we include it in our local.conf file.

https://onedigi.atlassian.net/browse/DEL-7574

Signed-off-by: Arturo Buzarra <arturo.buzarra@digi.com>
---
 sdk/build-github.sh |  7 +++++++
 sdk/build.sh        | 10 ++++++++++
 2 files changed, 17 insertions(+)

diff --git a/sdk/build-github.sh b/sdk/build-github.sh
index d5885aa09..437ec5f8f 100755
--- a/sdk/build-github.sh
+++ b/sdk/build-github.sh
@@ -45,6 +45,12 @@ ZIP_INSTALLER_CFG="
 DEY_IMAGE_INSTALLER = \"1\"
 "
 
+SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-$(date +%s)}"
+BUILD_TIMESTAMP="
+SOURCE_DATE_EPOCH = \"${SOURCE_DATE_EPOCH}\"
+REPRODUCIBLE_TIMESTAMP_ROOTFS = \"${SOURCE_DATE_EPOCH}\"
+"
+
 BACKEND_REMOVAL_CFG="
 DISTRO_FEATURES_remove = \"x11 wayland vulkan\"
 "
@@ -192,6 +198,7 @@ for platform in ${DY_PLATFORMS}; do
 				conf/local.conf
 			printf "${RM_WORK_CFG}" >> conf/local.conf
 			printf "${ZIP_INSTALLER_CFG}" >> conf/local.conf
+			printf "${BUILD_TIMESTAMP}" >> conf/local.conf
 			# Remove all desktop backend distro features if building framebuffer images
 			if [ "${DY_FB_IMAGE}" = "true" ]; then
 				printf "${BACKEND_REMOVAL_CFG}" >> conf/local.conf
diff --git a/sdk/build.sh b/sdk/build.sh
index f5a2e47ff..cb8b75df9 100755
--- a/sdk/build.sh
+++ b/sdk/build.sh
@@ -49,6 +49,12 @@ ZIP_INSTALLER_CFG="
 DEY_IMAGE_INSTALLER = \"1\"
 "
 
+SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-$(date +%s)}"
+BUILD_TIMESTAMP="
+SOURCE_DATE_EPOCH = \"${SOURCE_DATE_EPOCH}\"
+REPRODUCIBLE_TIMESTAMP_ROOTFS = \"${SOURCE_DATE_EPOCH}\"
+"
+
 REPO="$(which repo)"
 
 error() {
@@ -260,6 +266,10 @@ for platform in ${DY_PLATFORMS}; do
 				if [ -n "${DY_EXTRA_LOCAL_CONF}" ]; then
 					printf "%s\n" "${DY_EXTRA_LOCAL_CONF}" >> conf/local.conf
 				fi
+				# Add build timestamp
+				if [ -n "${BUILD_TIMESTAMP}" ]; then
+					printf "${BUILD_TIMESTAMP}" >> conf/local.conf
+				fi
 				# Check if it is a manufacturing job and, if the mfg layer is not there, add it
 				if [ "${DY_MFG_IMAGE}" = "true" ] && ! grep -qs "meta-digi-mfg" conf/bblayers.conf; then
 					sed -i -e "/meta-digi-dey/a\  ${YOCTO_INST_DIR}/sources/meta-digi-mfg \\\\" conf/bblayers.conf