--- setup.h.in.orig	2021-04-12 22:23:58 UTC
+++ setup.h.in
@@ -801,17 +801,14 @@
 /*
  * Define if your compiler has std::tr1::unordered_map
  */
-#undef HAVE_TR1_UNORDERED_MAP
 
 /*
  * Define if your compiler has std::tr1::unordered_set
  */
-#undef HAVE_TR1_UNORDERED_SET
 
 /*
  * Define if your compiler has <tr1/type_traits>
  */
-#undef HAVE_TR1_TYPE_TRAITS
 
 /*
  * Define if your compiler has <type_traits>