c++ - GCC ABI compatibility

Question

As far as I've understood, it is not possible to link libraries that use different versions of GCC's Application Binary Interface (ABI). Are there ABI changes to every version of GCC? Is it possible to link a library built with 4.3.1 if I use, say, GCC 4.3.2? Is there a matrix of some sort that lists all the ways I can combine GCC versions?

Answer 1

Since gcc-3.4.0, the ABI is forward compatible. I.E. a library made using an older release can be linked with a newer one and it should work (the reverse doesn't). Obviously, there could be bugs, but there is only one mentionned in the documentation: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33678