Index: gcc.jam

===================================================================

--- gcc.jam	(revision 43279)

+++ gcc.jam	(working copy)

@@ -309,6 +309,8 @@

 
 flags gcc.compile OPTIONS <debug-symbols>on : -g ;
 flags gcc.compile OPTIONS <profiling>on : -pg ;
+
+flags gcc.compile OPTIONS <rtti>off : -fno-rtti ;
 # On cygwin and mingw, gcc generates position independent code by default,
 # and warns if -fPIC is specified. This might not be the right way
 # of checking if we're using cygwin. For example, it's possible 
Index: msvc.jam

===================================================================

--- msvc.jam	(revision 43279)

+++ msvc.jam	(working copy)

@@ -475,6 +475,9 @@

         # 8.0 and above only has multi-threaded static RTL.
         toolset.flags $(toolset).compile CFLAGS $(condition)/<runtime-debugging>off/<runtime-link>static/<threading>single : /MT ;
         toolset.flags $(toolset).compile CFLAGS $(condition)/<runtime-debugging>on/<runtime-link>static/<threading>single : /MTd ;
+
+        # 8.0 enables rtti by default
+        toolset.flags $(toolset).compile CFLAGS $(condition)/<rtti>off : /GR- ;
     }
     toolset.pop-checking-for-flags-module ;
 }