On Wed, 19 Jun 2019, 19:07 ba58smith, <ba58smith@xxxxxxxxx> wrote: > > @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: No, create an EMPTY file. With no contents. Then run the commands Marc showed you, and it will answer your question. > > 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. This is not low-level coding, it's running two g++ commands (with rtti enabled and without) and comparing the output.
