>>> Maybe you're trying to use the blog post as a tutorial for how to >>> achieve what you want, but it isn't that, it's just a brief >>> introduction to the topic. If it doesn't hold your hand through every >>> step that's because that wasn't its goal. Trying to follow it like a >>> tutorial isn't going to work. >> >> That's fine. >> >> Where is the [nearly] complete documentation on the subject? I'm >> guessing it does not exist, and we are left to struggle through it >> (q.v.). >> >> If you don't provide the necessary documentation, you should not >> complain when users come with questions. > > You're the one complaining, not me. > > And nobody else has complained about the lack of that documentation, > **because generally nobody needs to do it**. I advise against what > you're trying to do. If the ramifications and the steps needed to do > it are not clear to you, then you probably don't need to do it. > > The only person I know who has had to do this is me, for libstdc++ > itself, and the instructions for making it work are the libstdc++ > makefiles. There are lots of folks who have experienced the issue; check out http://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=libstdc%2B%2B-cxx11;users=debian-gcc@xxxxxxxxxxxxxxxx. Debian happened to say "f**k it, we'll just recompile everything under the new ABI and be done with it". But they experienced the corner-case issues too. I don't know why they did not consult with the GCC folks. I'm the type of person who wants to get a definitive or authoritative answer so I can make informed decisions. That's why I come here to ask the experts. This step was not obvious to me at all. I don't ever recall having to define a library macro for a library: $ g++ -D_GLIBCXX_USE_CXX11_ABI=0 -c test.cxx -o test-v1.o $ g++ -D_GLIBCXX_USE_CXX11_ABI=1 -c test.cxx -o test-v2.o Naively, because of the blog post on the coexistent implementations, I was looking for an option like -dual-abi to do it for me. I estimated you were one of a handful of people on the planet who fully understands all the nuances of the issue. Jeff
