+version_string = US EXIM_VERSION_STR "\0<<eximversion>>";
+
+#ifdef EXIM_BUILD_DATE_OVERRIDE
+/* Reproducible build support; build tooling should have given us something looking like
+ * "25-Feb-2017 20:15:40" in EXIM_BUILD_DATE_OVERRIDE based on $SOURCE_DATE_EPOCH in environ
+ * per <https://reproducible-builds.org/specs/source-date-epoch/>
+ */
+version_date = date_buffer;
+version_date[0] = 0;
+Ustrncat(version_date, EXIM_BUILD_DATE_OVERRIDE, sizeof(date_buffer));