From 26d16fa5cdc9e351fcb582104cf8c7b3bf9ddaf0 Mon Sep 17 00:00:00 2001
From: Francis Rowe <fchmmr@minifree.lan>
Date: Fri, 04 Dec 2015 14:03:52 -0500
Subject: grub: build reproducibly

---
(limited to 'resources/utilities/grub-assemble')

diff --git a/resources/utilities/grub-assemble/gen.sh b/resources/utilities/grub-assemble/gen.sh
index 36352a3..3c52a84 100755
--- a/resources/utilities/grub-assemble/gen.sh
+++ b/resources/utilities/grub-assemble/gen.sh
@@ -29,6 +29,14 @@ if [ $# != 1 ]; then
 	exit 1
 fi
 
+if [ -f "../../../versiondate" ]; then
+	# _src release archive is being used
+	versiondate="$(cat ../../../versiondate)"
+else
+	# git repo is being used
+	versiondate="$(git show -s --format=%ct)"
+fi
+
 # This is where GRUB is expected to be (outside of the grub-assemble, instead in main checkout)
 grubdir="../../../grub"
 
@@ -51,6 +59,7 @@ if [ "${1}" = "vesafb" ]; then
 	  -o "grub_vesafb.elf" \
 	  -d "${grubdir}/grub-core/" \
 	  --fonts= --themes= --locales=  \
+	  --fixed-time ${versiondate} \
 	  --modules="${grub_modules}" \
 	  --install-modules="${grub_install_modules}" \
 	  /boot/grub/grub.cfg="../../../resources/grub/config/grub_memdisk.cfg" \
@@ -65,6 +74,7 @@ then
 	  -o "grub_txtmode.elf" \
 	  -d "${grubdir}/grub-core/" \
 	  --fonts= --themes= --locales=  \
+	  --fixed-time ${versiondate} \
 	  --modules="${grub_modules}" \
 	  --install-modules="${grub_install_modules}" \
 	  /boot/grub/grub.cfg="../../../resources/grub/config/grub_memdisk.cfg" \
--
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