diff --git a/checks/config.jam b/checks/config.jam
index c5adfe7b..a19dd385 100644
--- a/checks/config.jam
+++ b/checks/config.jam
@@ -12,9 +12,7 @@ rule requires ( names + )
    local result ;
    for name in $(names)
    {
-      local msg = "Boost.Config Feature Check: " ;
-      msg += $(name) ;
-      result += [ check-target-builds $(config-binding:D)//$(name) $(msg:J=) : : <build>no ] ;
+      result += [ check-target-builds $(config-binding:D)//$(name) $(name) : : <build>no ] ;
    }
    return $(result) ;
 }
diff --git a/include/boost/config/stdlib/libstdcpp3.hpp b/include/boost/config/stdlib/libstdcpp3.hpp
index c4c99960..ee8f2a20 100644
--- a/include/boost/config/stdlib/libstdcpp3.hpp
+++ b/include/boost/config/stdlib/libstdcpp3.hpp
@@ -125,7 +125,9 @@
 //
 #ifdef __clang__
 
-#if __has_include(<memory_resource>)
+#if __has_include(<compare>)
+#  define BOOST_LIBSTDCXX_VERSION 100100
+#elif __has_include(<memory_resource>)
 #  define BOOST_LIBSTDCXX_VERSION 90100
 #elif __has_include(<charconv>)
 #  define BOOST_LIBSTDCXX_VERSION 80100