The proper case for D.

[Walter Bright]

Robert Fraser wrote:
> I'm considering doing so since Optlink won't work with the debug build 
> of one of my libraries (it's 22MB),

Is this reported in bugzilla?

> and it doesn't seem to discard any 
> unreferenced library symbols, so the release build of my code is ~9.5MB, 
> while it should be ~4.

Optlink does not discard unreference symbols, it just doesn't pull them 
in from the library. If it did always pull in everything from the 
library, then the minimum D executable size will be the size of Phobos.

Since that isn't happening, something else is happening with your code. 
I bet that those unreferenced symbols *are* being referenced. You can 
determine this by using the librarian to remove those 'unreferenced' 
symbols from Phobos, and then link, and see if there are any unresolved 
symbol error messages.