diff mbox

[OpenWrt-Devel,05/13] include/image: introduce SOURCE_DATE_EPOCH variable in image context

Message ID 1453754975-18721-6-git-send-email-lynxis@fe80.eu
State Accepted
Headers show

Commit Message

Alexander 'lynxis' Couzens Jan. 25, 2016, 8:49 p.m. UTC 
SOURCE_DATE_EPOCH is the date of the last modified file using git/svn
as date source.
See https://reproducible-builds.org/specs/source-date-epoch/

Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
---
 include/image.mk                |  1 +
 scripts/getsource_date_epoch.sh | 31 +++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100755 scripts/getsource_date_epoch.sh
diff mbox

Patch

diff --git a/include/image.mk b/include/image.mk
index 4eee4ad..a53bea8 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -14,6 +14,7 @@  include $(INCLUDE_DIR)/version.mk
 override MAKE:=$(_SINGLE)$(SUBMAKE)
 override NO_TRACE_MAKE:=$(_SINGLE)$(NO_TRACE_MAKE)
 
+export SOURCE_DATE_EPOCH:=$(shell $(TOPDIR)/scripts/getsource_date_epoch.sh)
 KDIR=$(KERNEL_BUILD_DIR)
 KDIR_TMP=$(KDIR)/tmp
 DTS_DIR:=$(LINUX_DIR)/arch/$(LINUX_KARCH)/boot/dts
diff --git a/scripts/getsource_date_epoch.sh b/scripts/getsource_date_epoch.sh
new file mode 100755
index 0000000..bfe9c4b
--- /dev/null
+++ b/scripts/getsource_date_epoch.sh
@@ -0,0 +1,31 @@ 
+#!/usr/bin/env bash
+export LANG=C
+export LC_ALL=C
+[ -n "$TOPDIR" ] && cd $TOPDIR
+
+try_version() {
+	[ -f version.date ] || return 1
+	SOURCE_DATE_EPOCH="$(cat version.date)"
+	[ -n "$SOURCE_DATE_EPOCH" ]
+}
+
+try_svn() {
+	[ -d .svn ] || return 1
+	SOURCE_DATE_EPOCH="$(date -d "$(svn info svn://svn.openwrt.org/openwrt/ --show-item last-changed-date)" +%s)"
+	[ -n "$SOURCE_DATE_EPOCH" ]
+}
+
+try_git() {
+	[ -e .git ] || return 1
+	SOURCE_DATE_EPOCH="$(git log -1 --format=format:%ct)"
+	[ -n "$SOURCE_DATE_EPOCH" ]
+}
+
+try_hg() {
+	[ -d .hg ] || return 1
+	SOURCE_DATE_EPOCH=""
+	[ -n "$SOURCE_DATE_EPOCH" ]
+}
+
+try_version || try_svn || try_git || try_hg || SOURCE_DATE_EPOCH=""
+echo "$SOURCE_DATE_EPOCH"