Ralf Hasemann <rhasemann@mac.com> writes:
> How does the linker know to link against libpq.5.dylib when libpq.a is
> the only lib in my project?
You'd be best advised to ask that on an OSX development list; it's not
particularly a Postgres question, but a question of the behavior of the
development tools on that platform.
Mind you, the above behavior is probably *good*, and I don't recommend
you try to override it. Statically linked libraries are a real pain
in the neck when it comes time for a software update. But exactly how
the toolchain you're using finds the dynamic library, I don't know.
regards, tom lane