I started working on such a library last summer (see this thread: )https://lists.macports.org/pipermail/macports-dev/2016-August/033453.html I updated it yesterday and indeed it builds gss on 10.6 nicely.
See: https://github.com/kencu/snowleopardfixes I also have a port file to install the library, and a small block to add to the port files of ports that need it. This was one of the reasons I was looking for a 'default' portgroup that could be used to add a bit of code to all port files on a given system. Ken
