add SPDLOG_FINAL information in tweakme.h

include/spdlog/common.h

@@ -29,8 +29,7 @@
 #define SPDLOG_CONSTEXPR constexpr
 #endif
 
-// If an user of the library is not inheriting from the types provided by it,
-// he can #define SPDLOG_FINAL final to get additional optimizations
+// See tweakme.h
 #if !defined(SPDLOG_FINAL)
 #define SPDLOG_FINAL
 #endif

include/spdlog/tweakme.h

@@ -106,3 +106,11 @@
 //
 // #define SPDLOG_PREVENT_CHILD_FD
 ///////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////////////////////////////////////////
+// Uncomment to mark some types as final, allowing more optimizations in release
+// mode with recent compilers. See GCC's documentation for -Wsuggest-final-types
+// for instance.
+//
+// #define SPDLOG_FINAL final
+///////////////////////////////////////////////////////////////////////////////