1 files changed, 18 insertions, 1 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index cd828251b9..1db9b3fc05 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -629,6 +629,22 @@ BUILD_OPTIMIZATION = "${@oe.utils.vartrue('DEBUG_BUILD', '-Og -g -feliminate-unu
 BUILD_OPTIMIZATION[vardeps] += "DEBUG_BUILD"
 
 ##################################################################
+# Reproducibility
+##################################################################
+
+SDE_DIR = "${WORKDIR}/source-date-epoch"
+SDE_FILE = "${SDE_DIR}/__source_date_epoch.txt"
+SDE_DEPLOYDIR = "${WORKDIR}/deploy-source-date-epoch"
+
+BUILD_REPRODUCIBLE_BINARIES = "1"
+export PYTHONHASHSEED = "0"
+export PERL_HASH_SEED = "0"
+export SOURCE_DATE_EPOCH ?= "${@get_source_date_epoch_value(d)}"
+# A SOURCE_DATE_EPOCH of '0' might be misinterpreted as no SDE
+export SOURCE_DATE_EPOCH_FALLBACK ??= "1302044400"
+REPRODUCIBLE_TIMESTAMP_ROOTFS ??= "1520598896"
+
+##################################################################
 # Settings used by bitbake-layers.
 ##################################################################
 BBLAYERS_LAYERINDEX_URL ??= "https://layers.openembedded.org/layerindex/"
@@ -908,7 +924,8 @@ BB_HASHEXCLUDE_COMMON ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH BBSERVER DL_DI
     SSTATE_HASHEQUIV_METHOD SSTATE_HASHEQUIV_REPORT_TASKDATA \
     SSTATE_HASHEQUIV_OWNER CCACHE_TOP_DIR BB_HASHSERVE GIT_CEILING_DIRECTORIES \
     OMP_NUM_THREADS BB_CURRENTTASK"
-BB_HASHBASE_WHITELIST ?= "${BB_HASHEXCLUDE_COMMON} PSEUDO_IGNORE_PATHS BUILDHISTORY_DIR SSTATE_DIR "
+BB_HASHBASE_WHITELIST ?= "${BB_HASHEXCLUDE_COMMON} PSEUDO_IGNORE_PATHS BUILDHISTORY_DIR \
+    SSTATE_DIR SOURCE_DATE_EPOCH"
 BB_HASHCONFIG_WHITELIST ?= "${BB_HASHEXCLUDE_COMMON} DATE TIME SSH_AGENT_PID \
     SSH_AUTH_SOCK PSEUDO_BUILD BB_ENV_EXTRAWHITE DISABLE_SANITY_CHECKS \
     PARALLEL_MAKE BB_NUMBER_THREADS BB_ORIGENV BB_INVALIDCONF BBINCLUDED \