> On Jan 19, 2016, at 2:56 PM, Jakob Bohm <jb-openssl at wisemo.com> wrote: > > - Include additional patches to do "symbol versioning" > wherever the 1.0.x libraries contain ABI differences > that would otherwise break running software compiled > to run against shared libraries built from the 1.0.0 > tree against shared libraries compiled from the 1.0.1 > tree (etc.). Basically, they fix bugs in the binary > compatibility within the 1.0.x upstream releases. My reading of the symbol versioning in Debian is that no effort is made to preserve the ABI. Rather the symbol versioning enables Debian to more accurately determine minimum OpenSSL version dependencies when building other packages that depend on OpenSSL. And they allow the same application to dynamically load, for example, both the 0.9.8 and 1.0.0 (ABI so 1.0.0/1.0.1/1.0.2) shared libraries. The Debian libraries do not AFAIK contain backwards-ABI-compatible versions of obsoleted interfaces. -- Viktor.
