defect macro for C++17 feature std::invoke()

doc/macro_reference.qbk

@@ -924,6 +924,18 @@ provide compliant C++14 support.
 
 [endsect]
 
+[section Macros that describe C++17 features not supported]
+
+The following macros describe features in the 2016 ISO C++ standard, formerly known as C++1z,
+that are not yet supported by a particular compiler or library.
+
+[table
+[[Macro ][Description ]]
+[[`BOOST_NO_CXX17_STD_IVOKE`][The compiler does not support `std::invoke()`.]]
+]
+
+[endsect]
+
 [#config_helpers]
 
 [section Boost Helper Macros]