From 54c8545eecd2e00d87072bb52c07a2daffb967f2 Mon Sep 17 00:00:00 2001
From: Jeremi Piotrowski <jpiotrowski@microsoft.com>
Date: Mon, 11 Mar 2024 09:47:13 +0000
Subject: [PATCH] build_sysext: Set SOURCE_DATE_EPOCH for reproducibility

Signed-off-by: Jeremi Piotrowski <jpiotrowski@microsoft.com>
---
 build_sysext | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/build_sysext b/build_sysext
index 948f69ac45..6d6ce06651 100755
--- a/build_sysext
+++ b/build_sysext
@@ -221,6 +221,9 @@ for package; do
     "${package}"
 done
 
+# Make squashfs generation more reproducible.
+export SOURCE_DATE_EPOCH=$(stat -c '%Y' "${BUILD_DIR}/fs-root/usr/lib/os-release")
+
 # Unmount in order to get rid of the overlay
 umount "${BUILD_DIR}/install-root"
 umount "${BUILD_DIR}/fs-root"