# build with newer qt-5.14
# patch provided by  nrdufour at the wsjtx mailing list
--- a/qt_helpers.hpp    2019-11-26 09:22:32.000000000 -0500
+++ b/qt_helpers.hpp    2020-02-03 11:30:07.488214336 -0500
@@ -83,6 +83,7 @@
   // std::hash<> specialization for QString based on the dbj2
   // algorithm <http://www.cse.yorku.ca/~oz/hash.html> because qHash()
   // is poor on 64-bit platforms due to being a 32-bit hash value
+  #if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
   template<>
   struct hash<QString>
   {
@@ -96,6 +97,7 @@
       return hash;
     }
   };
+#endif
 }

 // Register some useful Qt types with QMetaType