diff --git a/configure.ac b/configure.ac
index b27947c..b58c3ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -174,18 +174,20 @@ AC_SUBST(PACKAGE_RELEASE,$app_cv_release)
 AC_SUBST(PACKAGE_MAJOR_RELEASE,$app_rls_major)
 AC_SUBST(PACKAGE_MINOR_RELEASE,$app_rls_minor)
 
-rpq_build_date=`LANG=C date`
-rpq_timestamp=`date +%Y%m%d%H%M%S`
-rpq_revision=`date +"%Y%m%d"`
-sccs_date=`date +%Y/%m/%d`
+date="date"
+test -z "$SOURCE_DATE_EPOCH" || date="$date -u -d@$SOURCE_DATE_EPOCH"
+rpq_build_date=`LANG=C $date`
+rpq_timestamp=`$date +%Y%m%d%H%M%S`
+rpq_revision=`$date +"%Y%m%d"`
+sccs_date=`$date +%Y/%m/%d`
 sccs_user=$USER
 
-AC_SUBST(RPQ_BUILD_DATE,$rpq_build_date)
-AC_SUBST(RPQ_TIMESTAMP,$rpq_timestamp)
-AC_SUBST(RPQ_REVISION,$rpq_revision)
+AC_DEFINE_UNQUOTED(RPQ_BUILD_DATE,$rpq_build_date)
+AC_DEFINE_UNQUOTED(RPQ_TIMESTAMP,$rpq_timestamp)
+AC_DEFINE_UNQUOTED(RPQ_REVISION,$rpq_revision)
 
-AC_SUBST(SCCS_USER,$USER)
-AC_SUBST(SCCS_DATE,$sccs_date)
+AC_DEFINE_UNQUOTED(SCCS_USER,$USER)
+AC_DEFINE_UNQUOTED(SCCS_DATE,$sccs_date)
 
 case "$host" in
 	*-mingw32|*-pc-msys)
diff --git a/src/include/config.h.in b/src/include/config.h.in
index c9d1f3d..a1f5f3f 100644
--- a/src/include/config.h.in
+++ b/src/include/config.h.in
@@ -37,7 +37,12 @@
 	#undef PRODUCT_NAME
 
 	#undef HAVE_LIBM
-	#undef HAVE_GNOME
-	#undef HAVE_GTKMAC
+
+	#undef RPQ_BUILD_DATE
+	#undef RPQ_TIMESTAMP
+	#undef RPQ_REVISION
+	#undef SCCS_USER
+	#undef SCCS_DATE
+
 
 #endif /* LIBV3270_CONFIG_INCLUDED */
diff --git a/src/trace/trace.c b/src/trace/trace.c
index 6af3fe0..2587802 100644
--- a/src/trace/trace.c
+++ b/src/trace/trace.c
@@ -123,6 +123,10 @@
 	if(hSession) {
 		lib3270_get_trace_handler(hSession,&widget->trace.handler,&widget->trace.userdata);
 		lib3270_set_trace_handler(hSession,trace_handler,(void *) widget);
+
+		g_autofree gchar * release = g_strdup_printf("Protocol library release is %s\n",lib3270_get_build_rpq_timestamp());
+		v3270_trace_append_text(GTK_WIDGET(widget),release);
+
 	}
 
 	// v3270_toggle_button_set_session
@@ -130,6 +134,7 @@
 	for(ix = 0; ix < G_N_ELEMENTS(toggles); ix++)
 		v3270_toggle_button_set_session(widget->buttons.widgets[ix],hSession);
 
+
  }
 
  static void finalize(GObject *object) {
@@ -415,7 +420,12 @@
 	{
 		widget->terminal = terminal;
 		g_object_ref_sink(G_OBJECT(terminal));
+
 		set_session(widget, v3270_get_session(widget->terminal));
+
+		g_autofree gchar * release = g_strdup_printf("Terminal library release is %s\n\n",G_STRINGIFY(RPQ_TIMESTAMP));
+		v3270_trace_append_text(GTK_WIDGET(widget),release);
+
 		GTK_V3270(terminal)->trace = GTK_WIDGET(widget);
 
 		g_object_notify_by_pspec(
--
libgit2 0.21.2