Stuart Brooks <stuartb@xxxxxxxxx> writes: > I was wondering if anyone could tell me whether C++ libraries compiled > with gcc 4.2 are compatible with gcc 4.1 and vice versa. From > http://gcc.gnu.org/onlinedocs/gcc/Compatibility.html I see that: > "Starting with GCC 3.2, GCC binary conventions for C++ are based on > a written, vendor-neutral C++ ABI " > and: > "We have tried hard to provide a stable ABI that will be compatible > with future GCC releases, but it is possible that we will encounter > problems that make this difficult" > > Does this mean I should have no problems? In general, yes. Assuming there are no bugs. Also see the -fabi-version option. Be aware that there was a bug in gcc 4.2.1 which was not in gcc 4.2.0 or gcc 4.2.2: the virtual table layout of the std::type_info class was accidentally reordered. Ian
