@Marc Glisse-6, Thanks for that, but can you provide a little more info, please? I'm to create a text file called empty.cc, and its contents should be: Create an empty file empty.cc, then $ g++ -E -dM e.cc > 1 $ g++ -E -dM e.cc -fno-rtti > 2 $ diff 1 2 108d107 < #define __GXX_RTTI 1 202d200 < #define __cpp_rtti 199711 Is that right? And then what do I do with it? Sorry - this is way lower-level coding than I'm used to. Thanks. -- Sent from: http://gcc.1065356.n8.nabble.com/gcc-Help-f629689.html
