define Build/ls-append-kernel
mkdir -p $@.tmp && \
cp $(IMAGE_KERNEL) $@.tmp/fitImage && \
- make_ext4fs -J -L kernel -l "$(LS_SD_KERNELPART_SIZE)M" "$@.kernel.part" "$@.tmp" && \
+ make_ext4fs -J -L kernel -l "$(LS_SD_KERNELPART_SIZE)M" \
+ $(if $(SOURCE_DATE_EPOCH),-T $(SOURCE_DATE_EPOCH)) \
+ "$@.kernel.part" "$@.tmp" && \
dd if=$@.kernel.part >> $@ && \
rm -rf $@.tmp && \
rm -f $@.kernel.part