Binary packages not rebuilding against updated libraries

[Jan Stary]

> 
> For comparison, the OpenBSD port system has resigned on upstreams'
> library versioning, and versions the libraries itself. For example,
> in audio/libsndfile (1.0.28):
> 
> 	SHARED_LIBS +=  sndfile   6.0   # .1.28
> 
> and it installs /usr/local/lib/libsndfile.so.6.0.

BTW, what's with the version numbers in e.g.
otool -L /opt/local/bin/openssl:
/opt/local/lib/libssl.45.dylib (compatibility version 46.0.0, current version 46.1.0)

libssl.45.dylib is what the vanilla tarball itself produces.
Where exactly do the numbers 46.0.0 and 46.1.0 come from?

	Jan