managing c++ library upgrades

[Alfred Perlstein]

I'm having the fun of dealing with old ports compiled with my old
g++ meshing badly with ports compiled with my new g++.

Would it make sense to record the compiler used to compile C++ based
ports so that when the system compiler is upgraded all C++ ports
can be recompiled?

-- 
- Alfred Perlstein
- Research Engineering Development Inc.
- email: bright at mu.org cell: 408-480-4684