--- a/src/error-helpers.cc 2019-03-05 14:28:24.967487038 +0100
+++ b/src/error-helpers.cc 2019-03-05 14:40:09.977597631 +0100
@@ -19,6 +19,8 @@
#include <octave/oct.h>
+#include <iostream>
+
#include "error-helpers.h"
// call verror