On Thu, Dec 05, 2013 at 11:23:40AM -0800, Stephen Hemminger wrote: > On Thu, 5 Dec 2013 13:18:50 -0600 > AJ Lewis <[email protected]> wrote: > > > Absolutely - so if you build czmq against a newer version of zeromq, and > > then drop that czmq build into an environment with an older version of > > zeromq installed, what happens? I think this fails spectacularly right now, > > even before any of the changes discussed below. > > Isn't this what shared library ABI versioning is for. > At least on Linux, if you play by the rules it all works.
Unfortunately it doesn't help because the shared library API versioning is only concerned with backwards incompatible changes - ie, changing existing functions so that the original callers can't user them. It doesn't cover new functionality that is added - that can keep the same SONAME because old binaries compiled against the old library continue to work. There is an implicit assumption that new binaries use the latest version of a library. -- AJ Lewis Software Engineer Quantum Corporation Work: 651 688-4346 email: [email protected] ---------------------------------------------------------------------- The information contained in this transmission may be confidential. Any disclosure, copying, or further distribution of confidential information is not permitted unless such privilege is explicitly granted in writing by Quantum. Quantum reserves the right to have electronic communications, including email and attachments, sent across its networks filtered through anti virus and spam software programs and retain such messages in order to comply with applicable data security and retention requirements. Quantum is not responsible for the proper and complete transmission of the substance of this communication or for any delay in its receipt. _______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
