debian/rules: use SOURCE_DATE_EPOCH for xen build dates

Use fixed timestamps for reproducible builds.

Signed-off-by: Maximilian Engelhardt <maxi@daemonizer.de>
Acked-by: Hans van Kranenburg <hans@knorrie.org>

diff --git a/debian/rules b/debian/rules
index 7a54747ed8b6d3ddda0584f29b313249a1e79a07..57dde6b0c8f40ff0810caf44d8b4f7fdcbcc07cb 100755 (executable)
--- a/debian/rules
+++ b/debian/rules
@@ -150,6 +150,12 @@ make_args_tools := $(make_args_common) \
        EXTRA_CFLAGS_XEN_TOOLS='$(dpkg_CFLAGS) $(dpkg_CPPFLAGS)' \
        PREPEND_LDFLAGS_XEN_TOOLS='$(dpkg_LDFLAGS)'
 
+# use the date from SOURCE_DATE_EPOCH for reproducible builds
+export XEN_BUILD_DATE=$(shell LC_ALL=C date -u -d "@$(SOURCE_DATE_EPOCH)")
+export XEN_BUILD_TIME=$(shell LC_ALL=C date -u -d "@$(SOURCE_DATE_EPOCH)" "+%T")
+export SMBIOS_REL_DATE=$(shell LC_ALL=C date -u -d "@$(SOURCE_DATE_EPOCH)" "+%m/%d/%Y")
+export VGABIOS_REL_DATE=$(shell LC_ALL=C date -u -d "@$(SOURCE_DATE_EPOCH)" "+%d %b %Y")
+
 export PYBUILD_NAME=xen
 export PYBUILD_DISABLE=test
 export PYBUILD_SYSTEM=distutils